US20160341325A1 - Mixing valve - Google Patents
Mixing valve Download PDFInfo
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- US20160341325A1 US20160341325A1 US15/061,794 US201615061794A US2016341325A1 US 20160341325 A1 US20160341325 A1 US 20160341325A1 US 201615061794 A US201615061794 A US 201615061794A US 2016341325 A1 US2016341325 A1 US 2016341325A1
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- United States
- Prior art keywords
- valve
- mixing
- fluid conduit
- valve shaft
- shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
- F16K11/0743—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces with both the supply and the discharge passages being on one side of the closure plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K19/00—Arrangements of valves and flow lines specially adapted for mixing fluids
- F16K19/006—Specially adapted for faucets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
- G05D23/1306—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
- G05D23/1313—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids without temperature sensing element
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Multiple-Way Valves (AREA)
- Domestic Plumbing Installations (AREA)
Abstract
In the present invention a mixing valve is provided, comprising a valve seat provided with first and second fluid conduits and a mixed fluid conduit and including a first plug-fit portion and a first mounting portion, and a valve core defining first and second stop surfaces. The valve core comprises a valve housing provided with a second plug-fit portion configured to be mated with the first plug-fit portion, a valve shaft disposed within the valve housing and provided with a valve plate comprising a first regulating aperture and a second regulating aperture, a stop member mounted on the valve shaft, the valve core defining an initial position in which the stop member engages with the first stop surface and a final position in which the stop member engages with the second stop surface, and a valve module. The mixing valve further comprises a pressing cover provided with a second mounting portion to be detachably mounted to the first mounting portion, wherein the valve core is tightly pressed between the pressing cover and the valve seat. In the present invention a valve core and a mixing valve assembly comprising such valve core are also provided.
Description
- This application claims priority under 35 U.S.C. §119 to following Chinese Patent application no. CN 201510257855.7, filed May 20, 2015, the entire contents of which are incorporated herein by reference thereto.
- The present invention relates to the field of valve, and in particular to a mixing valve.
- The mixing valve is known that is used in a bathroom or washroom to mix a cold water and a hot water, and is able to regulate a mixing ratio (i.e. water temperature) and a flow rate of the cold and hot waters. In general, such mixing valve comprises a valve seat connected to a cold water tube, a hot water tube and a warm water tube that are laid out in a room. Usually, such mixing valve is operated between two extreme conditions, i.e. a closing position, in which no water flows out through the mixing valve, and a hot-water maximum position of the mixing valve, in which the water has a highest water temperature and a maximum flow rate of hot water, by rotating the handle of the mixing valve in a range between two extreme rotation positions. To improve the performance of the mixing valve, incorporated in a valve core are two check valves for sealing connecting with a cold water outlet and a hot water outlet in the valve seat, respectively, so as to prevent the cold and hot waters from being mixed with or cross flowing to each other before passing through a mix regulating mechanism (such as a valve plate) in the valve core, and further a pressure balancing valve arranged downstream the check valves, so as to balance the pressures of the cold and hot waters flowing into the valve core and to prevent the pressures of the cold water from the cold water tube or of the hot water from being sharply increased to cause sudden increasing or decreasing of the outflow water temperature.
- Chinese invention patent CN 101418866B discloses a mixing valve, comprising a valve body (which is actually a valve seat), a cartridge assembly including check valves and a pressure balancing valve, an outer valve assembly for regulating a temperature and a flow rate of a water, a nut collar for retaining the cartridge assembly and the outer valve assembly onto the valve body by means of threaded connection to the valve body, and a handle. The outer valve assembly of such mixing valve comprises a stem connected to the handle, a stem receiver unrotatably connected to the stem and having a stop surface and a valve plate, a cap nested over the stem receiver and having a stop surface configured to engage with the stem receiver to define a clockwise extreme position, a disk unrotatably connected to the stem and having a stop surface, and a stop member nested over the disk and having a stop surface configured to engage with the stop surface of the disk to define a counterclockwise extreme position (hot-water maximum position). When a user opens the mixing valve to the hot-water maximum position by rotating the handle, the torque acting on the stop surface is transferred starting from the handle, via the proximal end (top end) of the stem, the disk at the middle portion of the stem, the stop member and the cap, to the sidewall of the valve body; when the user closes this mixing valve, the operating torque is transferred starting from the handle, via the proximal end of the stem, the stem receiver at the distal end (bottom end) of the stem, and the cap, to the sidewall of the valve body. It can be seen that in such mixing valve, the operating torque has to be transferred through multiple components and has a long path to be transferred, which is disadvantageous in bearing a relatively greater twisting force exerted by the user.
- Chinese Utility Model patent CN 202252102U discloses a constant temperature control device to be mounted within a water channel member (i.e. the valve seat of the present invention), comprising a temperature control rod assembly, a fine adjusting mechanism, a check valve, and a pressure balancing valve. When a user opens such constant temperature control device to the hot-water maximum position or closes the device to the closing position, the operating torque applied by the user is transferred starting from the handle, via the temperature control rod, a stop member of the fine adjusting mechanism, the housing of the fine adjusting mechanism, and a lower housing seat, to the valve seat. This arrangement causes that the operating torque to be transferred through an interface between the housing of the fine adjusting mechanism and the lower housing seat having a relatively lower load carrying capacity. Accordingly, it is still disadvantageous in bearing the relatively greater twisting force exerted by the user who typically intends to operate the valve with an excess force.
- Chinese Utility Model patent CN201196275Y discloses a cold and hot water control valve configuration for faucet, structurally similar to the configuration disclosed in CN 202252102U, and thus has to suffer the same deficiencies of poor ability to withstand the operating torque applied by the users.
- In addition, when the cold and hot water tubes are mounted in a reversed manner, the mixing valve has to be retrofitted to allow the operator to operate the handle in the same direction within the same rotation range. such reversion of cold and hot water tubes exists for example in two adjacent bathrooms at either side of the same wall. In the case that the prior art mixing valve usually has to comprise a separate stop member abutment, when the mixing valve is retrofitted, the stop member abutment and the stop member arranged thereon have to be first detached, then rotated and then re-installed in a different angle position, which increases the labor work of the worker and the risk of mis-installation.
- Therefore, there is a need for a mixing valve that provides solution to the problems mentioned above.
- One object of the present invention is to alleviate or eliminate the problem of the poor ability of the mixing valve to withstand the twisting force. For the object, the present invention provides a mixing valve for mixing first and second fluids, comprising: a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit, and comprising a first plug-fit portion and a first mounting portion; a valve core defining first and second stop surfaces and comprising: a valve housing provided at a bottom thereof with a second plug-fit portion configured to be mated with the first plug-fit portion and provided at a top thereof with a housing hole; a valve shaft rotatably received in the valve housing, with a top portion of the valve shaft extending out from the housing hole, and a bottom portion of the valve shaft provided with a valve plate including a first regulating aperture and a second regulating aperture, wherein the first regulating aperture is configured to selectively communicate with the first fluid conduit and the second regulating aperture is configured to selectively communicate with the second fluid conduit; a stop member mounted on the portion of the valve shaft extending out from the housing hole, wherein the valve core defines an initial position in which the stop member engages with the first stop surface and a final position in which the stop member engages with the second stop surface; and a valve module arranged between the regulating apertures on one hand and the first and second fluid conduits on the other hand. The mixing valve further comprises a pressing cover provided at a bottom thereof with a second mounting portion to be detachably mounted to the first mounting portion and provided at a top thereof with a cover hole through which the valve core passes, wherein the valve core is tightly pressed between the pressing cover and the valve seat.
- Such mixing valve is able to transmit the operating torque exerted by rotation of the handle by the user starting from the handle, via valve shaft, the stop member located at the proximal end of the valve shaft, and the valve housing, then to the valve seat, which leads to less component in the torque transmitting path and a reduced length of the transmitting path, thereby improving the load resistance of the mixing valve.
- According to an embodiment of the present invention, the valve housing has an adjusting seat integral with the valve housing and forming the first stop surface. By forming on the valve housing the first stop surface for defining the closing position of the mixing valve, the torque exerted to the stop surface by the user when closing the valve can be directly transmitted through valve housing to the valve seat which is for example fixed on a wall, such that the mixing valve is capable of withstanding a greater closing torque, and thus meets the requirement on a safe twisting force.
- According to an embodiment of the present invention, the valve core further comprises an adjusting ring fitted onto the adjusting seat and forming the second stop surface. Such temperature adjusting mechanism is convenient to manufacture, and is easy to operate.
- According to an embodiment of the present invention, the valve plate comprises a first layer and a second layer spaced apart from each other in a distance, wherein formed between the first and second layers is a mixing chamber in fluid communication with the mixed fluid conduit. Such configuration allows a sufficient space for mixing the fluids, and is advantageous for the valve plate to bear the pressure of the fluids.
- According to an embodiment of the present invention, the valve module is provided at a top thereof with sealing gaskets sealingly connected to the first and second regulating apertures, respectively, wherein the sealing gaskets are made of ceramic or rubber. By providing the sealing gaskets, the fluid is prevented from being escaped from the gaps between the valve plate and the valve module. It has been experimentally proven that the ceramic or rubber sealing gaskets may ensure the sealing effect.
- According to an embodiment of the present invention, the valve module comprises a first check valve sealingly connected to the first fluid conduit and a second check valve sealingly connected to the second fluid conduit, and further comprises a pressure balancing valve subassembly for balancing the pressures of the first and second fluids within the valve module. Providing the check valves can be beneficial to prevent the first and second fluids from being mixed with or cross flowing to each other before flowing into the valve module. Providing the balancing valve can prevent the temperature of the warm water from being changed in a sudden caused by the flow rate change of the cold or hot water in the water tubes.
- According to an embodiment of the present invention, an inner spline is provided at inside of the adjusting ring and an outer spline is provided at outside of the adjusting seat, and the adjusting ring is configured to be fitted onto the adjusting seat in variable angles by means of mating of the inner spline with the outer spline so as to adjust the final position. This arrangement can achieve a simple way of adjusting the water temperature, and is beneficial to the operation by the user and maintenance.
- According to a further aspect of the present invention, the technical solution of the invention also alleviates or eliminates the difficulty in retrofitting the mixing valve when the cold and hot water tubes are reversed.
- Therefore, the present invention provides a valve core for a mixing valve, comprising: a first stop surface and a second stop surface; a valve housing having a housing hole at a top thereof; a valve shaft rotatably received in the valve housing, with a top portion of the valve shaft extending out from the housing hole, and a bottom portion of the valve shaft provided with a valve plate including a first regulating aperture and a second regulating aperture; and a stop member, wherein the valve core defines an initial position in which the stop member engages with the first stop surface and a final position in which the stop member engages with the second stop surface, wherein the stop member is adjustably mounted to the portion of the valve shaft extending out from the housing hole so as to selectively protrude at either the first side or the second side of the valve shaft.
- Such valve core can be retrofitted in the reversed hot and cold water tubes in the adjacent bathrooms, simply by moving the stop member to be protruded from either the first side of the valve shaft or the second side, which is advantageous in saving the labor cost for the retrofitting. This valve core has a better adaptability to the hot and cold water tubes that are reversely laid, such that the user can control and operate the mixing valve with such valve core in the same manner, e.g., in the same direction of rotation and in the same range of angle, in two adjacent shower systems such as in bathrooms in which the cold and hot water tubes are reversed, which is more suitable for day life use of the users. Accordingly, using such valve core can be beneficial to realizing the standardization and operating convenience of the mixing valve.
- According to an embodiment of the present invention, arranged within the valve shaft is a through hole transversely extending through the valve shaft and the stop member is configured as a pin adapted to be in the through hole. It has been proven that such stop member with such mounting means operates reliably, and is easy to manufacture.
- According to an embodiment of the present invention, the pin has an outer threaded portion and the through hole has an inner threaded portion configured to be mated with the outer threaded portion. Such threaded connection can allow to ease the movement and positioning of the stop member in the through hole.
- The present invention further provides a mixing valve assembly comprising the aforesaid valve core, and further comprising: a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit; a pressing cover, the valve core being tightly pressed between the pressing cover and the valve seat; and a handle configured to be connected to the valve shaft; wherein the mixing valve assembly has a first installing configuration in which the stop member protrudes at the first side of the valve shaft and the handle is connected in a first orientation relative to the valve shaft and a second installing configuration in which the stop member protrudes at the second side of the valve shaft and the handle is connected in a second orientation relative to the valve shaft.
- Such mixing valve assembly may provide convenience in retrofitting for the installation person, with lower labor cost and lower risk of mis-installation. Also, such mixing valve assembly provides a better adaptability to the hot and cold water tubes that are reversely laid, such that the user may control and operate the mixing valve assembly in the same manner, e.g., in the same direction of rotation and in the same range of angle, in two adjacent shower systems such as in bathrooms in which the cold and hot water tubes are reversed, which is more suitable for day life use of the users. Accordingly, using such mixing valve assembly can be beneficial to realizing the standardization and operating convenience of the mixing valve assembly.
- According to an embodiment of the present invention, a top portion of the valve shaft has two truncated planes parallel to each other, and the handle comprises a receiving bore for receiving the top portion of the valve shaft, wherein the receiving bore includes on an inner wall thereof two corresponding truncated planes parallel to each other, such that the first orientation is offset from the second orientation by an angle of 180°, such that the handle may be connected to the valve shaft in two angle positions which are offset from each other by 180°. This configuration can realize a multi-angle mounting of the handle in a cost-effective way.
- The present invention further relates to a method for installing the mixing valve assembly. The present invention further relates to a method for retrofitting the mixing valve assembly for being used to an adjacent shower head.
- Other features and advantages of the present invention will be further described hereinafter in the specific embodiments.
- The preferred embodiments of the invention will be described in detail below in combination with the accompanying drawings in which:
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FIG. 1 shows a perspective view of the mixing valve according to an embodiment of the invention, with the mixing valve in the initial position; -
FIG. 2 shows an exploded view of the subassemblies of the mixing valve ofFIG. 1 ; -
FIG. 3 shows a top sectional view of the mixing valve ofFIG. 1 ; -
FIG. 4 shows a side sectional view of the mixing valve ofFIG. 1 ; -
FIG. 5 shows an exploded view of the valve core of the mixing valve according to an embodiment of the invention; -
FIG. 6 shows a top sectional view of the valve core ofFIG. 5 ; -
FIG. 7 shows a side sectional view of the valve core ofFIG. 5 ; -
FIG. 8 shows a bottom perspective view of the valve core ofFIG. 5 ; -
FIG. 9 shows a top perspective view of the valve core ofFIG. 5 ; -
FIG. 10 shows a perspective view of the valve core according to an embodiment of the invention; -
FIG. 11 shows a perspective view of a partially cut-off valve core ofFIG. 10 ; -
FIG. 12 shows a perspective view of the valve core according to another embodiment of the invention; -
FIG. 13 shows a perspective view of a partially cut-off valve core ofFIG. 12 ; -
FIG. 14 shows a perspective view of the valve housing according to an embodiment of the invention; -
FIG. 15 shows a perspective view of inner components of the mixing valve according to an embodiment of the invention; -
FIG. 16 shows a perspective view of inner components of the mixing valve according to another embodiment of the invention; -
FIG. 17 shows an arrangement of the mixing valve in adjacent shower systems according to an embodiment of the invention; -
FIGS. 18-20 show the steps of retrofitting the mixing valve between adjacent bathrooms according to an embodiment of the invention. - Referring to
FIGS. 1-4 , the mixingvalve 100 according to one embodiment of the invention is shown in an initial position or closing position. The mixingvalve 100 comprises avalve seat 1, avalve core 2 mounted onto thevalve seat 1, and apressing cover 3 tightly pressing thevalve core 2 against thevalve seat 1. For ease of description, hereinafter water is referred representing the fluid, cold water representing the first fluid, hot water representing the second fluid, and warm water representing the mixed fluid. However, it is understood by the skilled in the art that the first and second fluids and the mixed fluid may be any suitable fluid. - Provided within the
valve seat 1 are acold water conduit 14, ahot water conduit 15 and a mixedfluid conduit 16. Thecold water conduit 14 has acold water inlet 14 a sealingly connected tocold water tubes FIG. 17 ) which are for example laid in a wall, and acold water outlet 14 b sealingly connected to thevalve core 2. Thehot water conduit 15 has ahot water inlet 15 a sealingly connected tohot water tubes FIG. 17 ) which are for example laid in the wall, and ahot water outlet 15 b sealingly connected to thevalve core 2. Thewarm water conduit 16 has an upperwarm water outlet 16 a, e.g. communicating with a shower nozzle and a lowerwarm water outlet 16 a′ e.g. communicating with a lower water faucet. Thevalve seat 1 is provided at its center with anaccommodating cavity 12 surrounding thecold water outlet 14 b and ahot water outlet 15 b for receiving thevalve core 2. Theaccommodating cavity 12 is provided with aflange 32 along the periphery thereof, and theflange 32 on its outer surface has a first mountingportion 13 to be connected to thecover 3. In the illustrated embodiment, the first mountingportion 13 is in the form of screw threads. However, it can be appreciated that the first mount portion may be any suitable connection including, but not limited to, plugging, snap fitting, riveting, pin-hole connection, or any combination thereof. - The
accommodating cavity 12 is provided at its bottom with the above-mentioned cold andhot water outlets fit portion 11 configured to be mated with a second plug-fit portion 218 of thevalve core 2. Here, the first plug-fit portion 11 is in the form of a circular recess, and the second plug-fit portion 218 (seeFIG. 10 ) is in the form of a semi-circular foot. - It can be understood by the skilled in the art that the first and second plug-
fit portions fit portion 11 and the second plug-fit portion 218 may have a cross section in the shape of, including, but not limited to, semi-circle, circle, ellipse, oval, triangle, square, rectangle, trapezoid, hexagon or the like. Furthermore, the fitting between the first and second plug-fit portions fit portion 11 may comprise a hook having a cross section in the shape of rectangle, and the second plug-fit portion 218 may comprise a slot having a cross section in the shape of rectangle which is slightly larger than the rectangular first plug-fit portion 11. - The
cover 3 at its top portion is provided with acover hole 31 through which an adjustingseat 212 of thevalve housing 21, an adjustingring 24 and avalve shaft 22 of thevalve core 2 extend. Aflange 32 is integrally formed around thecover hole 31, and theflange 32 on its outer side forms apressing shoulder 33 of the cover. After assembly, thepressing shoulder 33 abuts against ashoulder 211 of thevalve housing 21 so as to press thevalve core 2 onto thevalve seat 1. Thecover 3 at its bottom portion is provided with askirt 34 having a greater diameter and including on its inner side a second mountingportion 34 configured to be threaded to the first mountingportion 13 of thevalve seat 1. Provided below a position where the first mountingportion 13 is connected to the second mountingportion 34 is a sealingring 18 for preventing the leakage between thecover 3 and thevalve seat 1. Provided at a position where thevalve housing 21 contacts with the valve seat 1 (a flange of the valve seat) is also a sealingring 25 for preventing the leakage between thevalve housing 21 and thevalve seat 1. - Referring to
FIGS. 5-9 , avalve core 2 according to an embodiment of the present invention is shown. Thevalve core 2 comprises anintegral valve housing 21 and an adjustingring 24. The adjustingring 24 is provided at its inner side with aninner spline 242 and is formed at its top with aprotrusion 243 protruding inwards and forming asecond stop surface 241 at one side. Thevalve housing 21 is provided at its top with ahousing hole 215 around which an adjustingseat 212 extending upwardly in an axial direction is integrally formed. The adjustingseat 212 at its periphery forms anouter spline 213 to engage with theinner spline 242 of the adjustingring 24. Provided on a top face of the adjustingring 212 is asector projection 214 having afirst stop surface 216 at one side. Thevalve housing 21 at its bottom portion is provided with two second plug-fit portions 218 in the shape of semi-cylinder (FIG. 10 ). Further, thevalve housing 21 at circumferential positions corresponding to the valve module housing is provided with valvehousing connecting portions 217 here in the form of hooks connected to corresponding connectingportions 2312 of the valve module housing here in the form of tabs, in order to secure thevalve module 23 within thevalve housing 21. - The valve core further comprises a
valve shaft 22 extending through thehousing hole 215 and thevalve shaft 22 at its top portion forms two opposedtruncated planes 223 configured to engage with a handle (not illustrated), such that the handle can be operatively connected to the portion of thevalve shaft 22 that extends out from thehousing hole 215 in two angle positions offset from each other by 180°. Thevalve shaft 22 at its bottom portion forms avalve plate 221, or is connected (not illustrated) thereto by means of such as, snap fitting, adhering or the like. The portion of thevalve shaft 22 that extends out from thehousing hole 215 also forms a radial throughhole 222 for receiving astop member 26 here in the form of a pin. - The
stop member 26 forms a first stop portion and asecond stop portion outer thread 262 configured to engage with an inner thread inside the throughhole 222 at its middle section, such that thestop member 26 may be configured to move back or forth in the radial direction within the throughhole 222, in order to expose thefirst stop portion 261 a or thesecond stop portion 261 b to allow it to engage with thefirst stop surface 216 such that the mixingvalve 100 is in the initial position or closing position, or with thesecond stop surface 241 such that the mixingvalve 100 is in the final position or hot-water maximum position. It should be understood that thestop member 26 may have other forms and other fitting manners. For example, thestop member 26 and throughhole 222 may have a cross section in the shape of circle, semi-circle, ellipse, oval, triangle, square, rectangle, trapezoid, hexagon or the like. The movement of thestop member 26 in the throughhole 222 may be by means of screw-in, sliding or the like. In addition, the positioning of thestop member 26 within the throughhole 222 may be by means of screw threads, stop block, snap fitting or the like. - The valve core further comprises a
valve module 23 which comprises a firstvalve module housing 231 a and a secondvalve module housing 231 b. The firstvalve module housing 231 a forms at its top portion afirst outlet 2311 a receiving afirst sealing gasket 234 a and afirst spring 235 a, forms at its bottom portion afirst inlet 2315 a receiving afirst check valve 233 a and asealing ring 236, and forms at its middle portion acold water chamber 2314 a which forms at one side thereof a first mounting port (invisible from the figures) for mounting a pressure balancingvalve subassembly 232. The secondvalve module housing 231 b forms at its top portion asecond outlet 2311 b receiving asecond sealing gasket 234 b and asecond spring 235 b, forms at its bottom portion asecond inlet 2315 b receiving asecond check valve 233 b and asealing ring 236, and forms at its middle portion ahot water chamber 2314 b which forms at one side thereof a second mountingport 2313 b for mounting the pressure balancingvalve subassembly 232. Awarm water chamber 27 is formed between thevalve module housings valve housing 21. The sealinggaskets valve plate 221. The pressure balancingvalve subassembly 232 comprises a balancingvalve sleeve 2321, aspool 2322 and sealing rings 2323. The check valves and pressure balancingvalve subassembly 232 may be of the type or operate in the know manners, which will not be detailed for concise. - Now the flowing path of water flow will be briefly introduced. The cold water flows from the laid cold water tube (not shown) into the
cold water inlet 14 a of thevalve seat 1, and further flows through thecold water conduit 14, thecold water outlet 14 b, thefirst inlet 2315 a, thecold water chamber 2314 a, the pressure balancingvalve subassembly 232, thefirst outlet 2311 a, thevalve plate 221, thewarm water chamber 27, and thewarm water conduit 16, to the upperwarm water outlet 16 a or the lowerwarm water outlet 16 a′; the hot water flows from the laid hot water tube (not shown) into thehot water inlet 15 a of thevalve seat 1, and further flows through thehot water conduit 15, thehot water outlet 15 b, thesecond inlet 2315 b, thehot water chamber 2314 b, the pressure balancingvalve subassembly 232, thesecond outlet 2311 b, thevalve plate 221, thewarm water chamber 27, and thewarm water conduit 16, to the upperwarm water outlet 16 a or the lowerwarm water outlet 16 a′. - According to the present invention, the sealing
gaskets springs valve subassembly 232 and thecheck valves valve module housings gaskets springs valve subassembly 232 by a partition in thevalve housing 21, or separating the pressure balancingvalve subassembly 232 from thecheck valves valve housing 21. This allows a more compact structure of thevalve module 23, and improves the ability of the valve module as a whole to withstand the pressure of cold and hot waters. - Referring now to
FIGS. 10 and 11 , a valve core according to an embodiment of the present invention is shown in a perspective view and a sectional perspective view respectively. As illustrated, by means ofridges 219 in thevalve housing 21, thevalve module housings ridges 219. Thewarm water chamber 27 is formed between thevalve housing 21 and thevalve module housing fit portions 218 in the form of semi-cylindrical feet are formed at the bottom of thevalve housing 21. - Referring now to
FIGS. 12 and 13 , a valve core according to another embodiment of the present invention is shown in a perspective view and a sectional perspective view respectively. As illustrated, by means ofridges 219′ in thevalve housing 21′, thevalve module housings 231 a′, 231 b′ are held within a holding groove extending axially and formed between theridges 219′. Interiors of thevalve module housings 231 a′, 231 b′ form a portion of thewarm chamber 27′. The second plug-fit portions 218′ are formed at the bottom of thevalve housing 21′. The second plug-fit portions 218′ are in the form of circular feet having bottom opening or recess. Although not shown, theaccommodating cavity 12 ofvalve seat 11 may form the first plug-fit portions having a corresponding shape, e.g. in the form of annular grooves. - Referring to
FIG. 14 , avalve housing 21 according to an embodiment of the present invention is shown. As illustrated, within thevalve housing 21, apressure bearing surface 210 is formed below and adjacent to the valve plate. Thepressure bearing surface 210 preferably allows thevalve module housings pressure bearing surface 210 may be in the form of a (partial) rib extending in the axial direction of the valve housing. - Referring now to
FIG. 15 , the inner components of the mixingvalve 100 according to an embodiment of the present invention are shown in a perspective view. As illustrated, the sealinggaskets valve plate 221, and cooperate with the regulatingapertures valve plate 221 to regulate the temperature and flow rate of the outflow water. Such regulation may be in a known manner in the art, such that no details are to be described for concise. In the embodiment, the illustratedvalve plate 221 has a first layer and a second layer. Here, the sealinggaskets valve plate 221 may be made of rubber. - Referring now to
FIG. 16 , the inner components of the mixingvalve 100 according to an embodiment of the present invention are shown in a perspective view. As illustrated, each sealinggasket 234 a′, 234 b′ is provided with a slidingpad 2341, which abuts against thevalve plate 221′ and cooperates with therespective regulating aperture 2211 a′, 2211 b′ on thevalve plate 221′ to regulate the temperature and flow rate of the outflow water. Such regulation may be in a known manner in the art. In the embodiment, the illustratedvalve plate 221′ has only one layer. Here, the slidingpads 2341 andvalve plate 221′ may be made of ceramic. Indeed, the features in the embodiments shown inFIGS. 15 and 16 may be combined or replaced with each other. - Referring to
FIG. 17 , the arrangement of mixingvalves main tube 200 and a common hot watermain tube 300. The cold watermain tube 200 is in communication with thecold water inlet 14 a of the mixingvalve 100 via acold water tube 201, and is in communication with thehot water inlet 15 a′ of theother mixing valve 100′ via acold water tube 201′; the hot watermain tube 300 is in communication with thehot water inlet 15 a of the mixingvalve 100 via ahot water tube 301, and is in communication with thecold water inlet 14 a′ of theother mixing valve 100′ via ahot water tube 301′. It can be seen that, for theother mixing valve 100′, the cold andhot water tubes 201′, 301′ are reversely connected to the hot andcold water inlets 15′a, 14 a′. Such conventional arrangement of water tubes in the adjacent bathrooms will lead to issue in assembly of the mixingvalve 100. In general, users are used to rotating the handle of the mixingvalve 100 from left to right so as to open the faucet or the shower nozzle, until reaching the hot-water maximum position. In order to allow users to operate the handle in their habit even when the cold and hot water tubes are reversely connected, it is preferred that the mixingvalve 100 may be adjustable or retrofitted accordingly to adapt to the different shower systems. - Referring now to
FIGS. 18-20 , a method for retrofitting a mixingvalve 100 according to an embodiment of the present invention between the adjacent bathrooms is shown. - The mixing
valve 100 according to the invention has a first installing configuration and a second installing configuration. As illustrated inFIG. 18 , in the first installing configuration, thefirst stop portion 261 a of thestop member 26 protrudes out and thesecond stop portion 261 b is concealed within thevalve shaft 22. In the first installing configuration, by means of the rotation of thevalve shaft 22, thefirst stop portion 261 a of thestop member 26 may engage with thefirst stop surface 216 of the adjustingseat 212 or thesecond stop surface 241, or may be rotated therebetween. In this case, the handle is connected to thevalve shaft 22 in a first orientation (where themark 266 is not visible) relative to thevalve shaft 22, e.g. with the handle extending downwardly. As illustrated inFIG. 20 , in the second installing configuration, thestop member 26 is arranged such that thesecond stop portion 261 b protrudes out and thefirst stop portion 261 a is concealed within thevalve shaft 22. As compared to the first installing configuration, thevalve shaft 22 in the second installing configuration is rotated by 180° relative to the valve seat (where themark 266 faces upwardly), such that the handle is connected to thevalve shaft 22 in a second orientation (where themark 266 faces upwardly) relative to thevalve shaft 22. Since thevalve shaft 22 has been rotated by 180° relative to the valve seat, the orientations of the handle relative to the valve seat are not changed actually, that is, the handle still extends downwardly. In other words, in the first and second installing configurations, the handle has the same installing orientations relative to the valve seat. In the second installing configuration, thevalve shaft 22 is configured such that thesecond stop portion 261 b my still engage with the samefirst stop surface 216 of the adjustingseat 212 or the samesecond stop surface 218, or may be rotated therebetween. - In order to enable connection of the handle with the
valve shaft 22 in first and second angle positions which are offset by 180°, the end portion of thevalve shaft 22 extending out from thevalve housing 21 may have twotruncated planes 223 parallel to each other, while the inner wall of the receiving bore for receiving the end portion of thevalve shaft 22 may also have two corresponding truncated planes (not shown) parallel to each other, such that the handle may be selectively connected to the valve shaft in two different angle positions that are offset by 180 degree (while the handle may be in the same angle position relative to the valve seat or other components of the mixing valve than the valve shaft). - Referring to
FIGS. 18-20 together withFIG. 17 , the steps of method according to the present invention will now be described in detail. It should be understood by the skilled in the art that the method according to the invention may refer to either a method for retrofitting the mixing valve assembly suitable for an adjacent shower head, or a method for installing the mixing valve assembly. - In
FIG. 18 , the handle (not shown) is detached and the adjustingring 24 is removed. Now the mixing valve is in the first installing configuration and thestop member 26 is in the first position (where themark 266 is not visible), such that thefirst stop portion 261 a protrudes out while thesecond stop portion 261 b is concealed within the throughhole 222 of thevalve shaft 22. The stop member 26 (which may be provided with a tool bore such as a hexagon bore at either ends) is then screwed by atool 400 such as a hexagon wrench. InFIG. 19 , thestop member 26 has been screwed to a second position, such that thefirst stop portion 261 a is concealed within the throughhole 222 while thesecond stop portion 261 b is exposed. Then, thestop member 26 which has been moved to the second position is rotated by 180 degrees to a position as shown inFIG. 20 , forming the second installing configuration of the mixing valve 100 (where themark 266 is visible on the top face of the valve shaft 22). Then, the adjusting ring is mounted back, and the handle is installed in the same orientation relative to the valve seat (but offset by 180° relative to the valve shaft 22). - Referring to
FIG. 15 , the condition of the inner features of the mixingvalve 100 before retrofitted is shown. When the user rotates the handle from left to right to open the mixingvalve 100, thefirst regulating aperture 2211 a is first in communication with thesecond sealing gasket 234 b connected to thecold water tube 201, and then thesecond regulating aperture 2211 b is in communication with thefirst sealing gasket 234 a connected to thehot water tube 301, such that the mixingvalve 100 is operated to be opened from the initial position or closing position to the final position or hot-water maximum position. Having retrofitted the mixingvalve 100 to adapt to the adjacent shower system in which thecold water tube hot water tube valve shaft 22 has been rotated by 180° from the initial position, when the user operates the mixingvalve 100, thefirst regulating aperture 2211 a is first in communication with thefirst sealing gasket 234 a which now is connected to thecold water tube 201′, and then thesecond regulating aperture 2211 b is in communication with thesecond sealing gasket 234 b which now is connected to thehot water tube 301′, such that the user is still allowed to open the mixing valve from the initial position or closing position to the final position or hot-water maximum position by rotating the handle from left to right. As such, the users may have the consistent operations even in different shower systems, which result in the convenience and standardization of the operation of the mixingvalve 100. - Although the invention has been explained in details above in the discussion of the embodiments, it should be understood that the embodiments are illustrative, but should not be construed as limitation. Having read this description, the skilled in the art may make various changes, modifications and alternatives to the illustrated embodiments without departing from the scope and spirit of the invention, which is solely defined by the appended claims and the equivalents thereto.
Claims (20)
1. A mixing valve for mixing first and second fluids, comprising:
a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit, and comprising a first plug-fit portion and a first mounting portion;
a valve core defining a first stop surface and a second stop surface, and comprising:
a valve housing provided at a bottom thereof with a second plug-fit portion configured to be mated with the first plug-fit portion and provided at a top thereof with a housing hole;
a valve shaft rotatably received in the valve housing, with a top portion of the valve shaft extending out from the housing hole, and a bottom portion of the valve shaft provided with a valve plate including a first regulating aperture and a second regulating aperture, wherein the first regulating aperture is configured to selectively communicate with the first fluid conduit and the second regulating aperture is configured to selectively communicate with the second fluid conduit;
a stop member mounted on the portion of the valve shaft extending out from the housing hole, wherein the valve core defines an initial position in which the stop member engages with the first stop surface and a final position in which the stop member engages with the second stop surface; and
a valve module arranged between the regulating apertures on one hand and the first and second fluid conduits on the other hand; and
a pressing cover provided at a bottom thereof with a second mounting portion configured to be detachably mounted to the first mounting portion and provided at a top thereof with a cover hole through which the valve core passes, wherein the valve core is tightly pressed between the pressing cover and the valve seat.
2. The mixing valve according to the claim 1 , wherein the valve housing has an adjusting seat integral with the valve housing and forming the first stop surface.
3. The mixing valve according to the claim 2 , wherein the valve core further comprises an adjusting ring fitted onto the adjusting seat and forming the second stop surface.
4. The mixing valve according to the claim 1 , wherein the valve plate comprises a first layer and a second layer spaced from each other by a distance, wherein formed between the first and second layers is a mixing chamber in fluid communication with the mixed fluid conduit.
5. The mixing valve according to the claim 1 , wherein the valve module is provided at a top thereof with sealing gaskets sealingly connected to the first and second regulating apertures, respectively, wherein the sealing gaskets are made of ceramic or rubber.
6. The mixing valve according to the claim 1 , wherein the valve module comprises a first check valve sealingly connected to the first fluid conduit and a second check valve sealingly connected to the second fluid conduit, and further comprises a pressure balancing valve subassembly for balancing the pressures of the first and second fluids within the valve module.
7. The mixing valve according to the claim 3 , wherein an inner spline is provided at inside of the adjusting ring and an outer spline is provided at outside of the adjusting seat, and the adjusting ring is configured to be fitted onto the adjusting seat in variable angles by means of mating of the inner spline with the outer spline so as to adjust the final position.
8. A valve core for mixing valve, comprising:
a first stop surface and a second stop surface;
a valve housing having a housing hole at a top thereof;
a valve shaft rotatably received in the valve housing, with a top portion of the valve shaft extending out from the housing hole, and a bottom portion of the valve shaft provided with a valve plate including a first regulating aperture and second regulating aperture; and
a stop member, wherein the valve core defines an initial position in which the stop member engages with the first stop surface and a final position in which the stop member engages with the second stop surface, wherein the stop member is adjustably mounted to the portion of the valve shaft extending out from the housing hole so as to selectively protrude at either the first side or the second side of the valve shaft.
9. The valve core according to the claim 8 , wherein arranged within the valve shaft is a through hole transversely extending through the valve shaft, and the stop member is configured as a pin adapted to be mounted in the through hole.
10. The valve core according to the claim 9 , wherein the pin has an outer threaded portion and the through hole has an inner threaded portion configured to be mated with the outer threaded portion.
11. The valve core according to claim 8 , wherein the valve housing has an adjusting seat integral with the valve housing and forming the first stop surface.
12. The valve core according to the claim 11 , wherein the valve core further comprises an adjusting ring fitted onto the adjusting seat and forming the second stop surface.
13. A mixing valve assembly comprising the valve core according to claim 8 , and further comprising:
a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit;
a pressing cover, the valve core being tightly pressed between the pressing cover and the valve seat; and
a handle configured to be connected to the valve shaft;
wherein the mixing valve assembly has a first installing configuration in which the stop member protrudes at the first side of the valve shaft and the handle is connected in a first orientation relative to the valve shaft, and a second installing configuration in which the stop member protrudes at the second side of the valve shaft and the handle is connected in a second orientation relative to the valve shaft.
14. The mixing valve assembly according to the claim 13 , wherein the top portion of the valve shaft has two truncated planes parallel to each other, and the handle comprises a receiving bore for receiving the top portion of the valve shaft, wherein the receiving bore includes on an inner wall thereof two corresponding truncated planes parallel to each other, such that the first orientation is offset from the second orientation by an angle of 180°.
15. The valve core according to claim 9 , wherein the valve housing has an adjusting seat integral with the valve housing and forming the first stop surface.
16. The valve core according to claim 10 , wherein the valve housing has an adjusting seat integral with the valve housing and forming the first stop surface.
17. A mixing valve assembly comprising the valve core according to claim 9 , and further comprising:
a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit;
a pressing cover, the valve core being tightly pressed between the pressing cover and the valve seat; and
a handle configured to be connected to the valve shaft;
wherein the mixing valve assembly has a first installing configuration in which the stop member protrudes at the first side of the valve shaft and the handle is connected in a first orientation relative to the valve shaft, and a second installing configuration in which the stop member protrudes at the second side of the valve shaft and the handle is connected in a second orientation relative to the valve shaft.
18. A mixing valve assembly comprising the valve core according to claim 10 , and further comprising:
a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit;
a pressing cover, the valve core being tightly pressed between the pressing cover and the valve seat; and
a handle configured to be connected to the valve shaft;
wherein the mixing valve assembly has a first installing configuration in which the stop member protrudes at the first side of the valve shaft and the handle is connected in a first orientation relative to the valve shaft, and a second installing configuration in which the stop member protrudes at the second side of the valve shaft and the handle is connected in a second orientation relative to the valve shaft.
19. A mixing valve assembly comprising the valve core according to claim 11 , and further comprising:
a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit;
a pressing cover, the valve core being tightly pressed between the pressing cover and the valve seat; and
a handle configured to be connected to the valve shaft;
wherein the mixing valve assembly has a first installing configuration in which the stop member protrudes at the first side of the valve shaft and the handle is connected in a first orientation relative to the valve shaft, and a second installing configuration in which the stop member protrudes at the second side of the valve shaft and the handle is connected in a second orientation relative to the valve shaft.
20. A mixing valve assembly comprising the valve core according to claim 12 , and further comprising:
a valve seat provided with a first fluid conduit, a second fluid conduit and at least one mixed fluid conduit;
a pressing cover, the valve core being tightly pressed between the pressing cover and the valve seat; and
a handle configured to be connected to the valve shaft;
wherein the mixing valve assembly has a first installing configuration in which the stop member protrudes at the first side of the valve shaft and the handle is connected in a first orientation relative to the valve shaft, and a second installing configuration in which the stop member protrudes at the second side of the valve shaft and the handle is connected in a second orientation relative to the valve shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US15/981,288 US10724649B2 (en) | 2015-05-20 | 2018-05-16 | Mixing valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510257855.7 | 2015-05-20 | ||
CN201510257855.7A CN104896145B (en) | 2015-05-20 | 2015-05-20 | Mixing valve |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/981,288 Division US10724649B2 (en) | 2015-05-20 | 2018-05-16 | Mixing valve |
Publications (1)
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US20160341325A1 true US20160341325A1 (en) | 2016-11-24 |
Family
ID=54028997
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US15/061,794 Abandoned US20160341325A1 (en) | 2015-05-20 | 2016-03-04 | Mixing valve |
US15/981,288 Active 2036-04-03 US10724649B2 (en) | 2015-05-20 | 2018-05-16 | Mixing valve |
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Application Number | Title | Priority Date | Filing Date |
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US15/981,288 Active 2036-04-03 US10724649B2 (en) | 2015-05-20 | 2018-05-16 | Mixing valve |
Country Status (2)
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US (2) | US20160341325A1 (en) |
CN (1) | CN104896145B (en) |
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US11112030B2 (en) * | 2018-08-20 | 2021-09-07 | Grohe Ag | Valve cartridge for at least one sanitary fitting with a changeable function |
CN109681671A (en) * | 2019-01-10 | 2019-04-26 | 温州耐洁阀芯有限公司 | Temp sensing type divides water termostat ceramic cartridge |
US11396740B2 (en) | 2019-01-18 | 2022-07-26 | Kohler Co. | Independent control free standing bath filler |
US20210324615A1 (en) * | 2020-04-16 | 2021-10-21 | Runner(Xiamen) Corp. | Shower apparatus |
US11814827B2 (en) * | 2020-04-16 | 2023-11-14 | Runner(Xiamen) Corp. | Shower apparatus |
USD917668S1 (en) * | 2020-09-18 | 2021-04-27 | Guangdong SunRise Industrial Co., Ltd. | Shower valve |
USD979713S1 (en) * | 2022-06-30 | 2023-02-28 | Kaihua WANG | Valve |
Also Published As
Publication number | Publication date |
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CN104896145A (en) | 2015-09-09 |
CN104896145B (en) | 2017-12-08 |
US20180259082A1 (en) | 2018-09-13 |
US10724649B2 (en) | 2020-07-28 |
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