CN104510330A - Pressure sensor and pressure cooker - Google Patents
Pressure sensor and pressure cooker Download PDFInfo
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- CN104510330A CN104510330A CN201310451308.3A CN201310451308A CN104510330A CN 104510330 A CN104510330 A CN 104510330A CN 201310451308 A CN201310451308 A CN 201310451308A CN 104510330 A CN104510330 A CN 104510330A
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- pressure sensor
- pressure
- elastic sealing
- sealing element
- end cap
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Abstract
The invention discloses a pressure sensor and a pressure cooker. The pressure sensor comprises a shell, an elastic sealing member, and a sensing element, wherein a pressure detecting chamber is formed in the shell; the elastic sealing member is arranged in the pressure detecting chamber, and divides the pressure detecting chamber into a confined space and a pressure guide passage communicated with the outside in a sealing mode; and the sensing element is arranged in the confined space. The pressure sensor of the embodiment has the advantages of difficulty in damage, reliable performance and long service life.
Description
Technical field
The present invention relates to field of household appliances, in particular to a kind of pressure sensor and the pressure cooker with described pressure sensor.
Background technology
The direct sensed pressure of existing pressure sensor, once working environment is poor, foreign matter, impurity etc. can touch sensing element, affect the performance of sensing element, even cause sensing element to damage,
Summary of the invention
The present invention is intended to solve one of above-mentioned technical problem of the prior art at least to a certain extent.For this reason, one object of the present invention is to propose a kind of pressure sensor, and this pressure sensor can realize indirect sensed pressure, has not fragile, the advantage such as dependable performance, long service life.
Another object of the present invention is to propose a kind of pressure cooker with described pressure sensor.
For achieving the above object, a first aspect of the present invention proposes a kind of pressure sensor, and described pressure sensor comprises: housing, has pressure detecting chamber in described housing; Elastic sealing element, described elastic sealing element is located in described pressure detecting chamber, the pilot passage that described pressure detecting chamber sealed separation is become confined space and is in communication with the outside by described elastic sealing element; Sensing element, described sensing element is located in described confined space.
Pass through to arrange described elastic sealing element in described pressure detecting chamber according to the pressure sensor of the embodiment of the present invention, can utilize described elastic sealing element that described pressure detecting chamber sealed separation is become described confined space and described pilot passage, described sensing element is placed in described confined space, the pressure in described confined space can be changed when pressure extrudes described elastic sealing element, thus indirectly-acting is in described sensing element, realize the function of described pressure sensor indirect detection pressure.Specifically, pressure in described pilot passage can act on the part that described elastic sealing element is exposed to described pilot passage, and then the pressure size that can change in described confined space, the pressure of described sensing element by the pressure in confined space described in perception in pilot passage described in indirect perception.Because described pressure sensor adopts indirect pressure-sensitive mode, can ensure that described sensing element is not affected by the external environment like this.That is, no matter how poor working environment is, foreign matter and impurity all can be blocked by described elastic sealing element and can not come in contact with described sensing element, not only can ensure the dependable performance of described sensing element thus, and described sensing element can be avoided to be damaged by foreign matter.In brief, described pressure sensor, by adopting the mode of indirect pressure-sensitive, can not only realize the function of accurate detected pressures, and described sensing element can be isolated from the outside, play a good protection to described sensing element.Therefore, pressure sensor according to the present invention has the not easily advantage such as damage, dependable performance, long service life.
In addition, pressure sensor according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, described housing comprises base and end cap, and described end cap seal to be connected on described base and jointly to limit described pressure detecting chamber with described base.The assembling of described pressure sensor can be made so convenient.
According to one embodiment of present invention, described sensing element comprises: circuit board, and described circuit board is located in described confined space; And chip, described chip is located on described circuit board.Can realize the pressure detecting function of described sensing element thus, and the structure of described sensing element is simple, easy to manufacture.
According to one embodiment of present invention, described sensing element also comprises connecting line, and described end cap is provided with through hole, and one end of described connecting line is connected on described circuit board and the other end stretches out described confined space from described through hole.Like this can so that being connected and installed of described pressure sensor.
According to one embodiment of present invention, between described end cap and described base, be provided with sealing ring, between described connecting line and described end cap, be provided with end cap seal part.The sealing between described end cap, described base and described connecting line can be ensured thus.
According to one embodiment of present invention, described end cap is provided with mounting groove, and described sealing ring is positioned at described mounting groove.The sealing that described end cap is connected with described base can be improved so further.
According to one embodiment of present invention, the periphery of described elastic sealing element is along being connected with described sealing ring.The sealing of described confined space can be improved thus.
According to one embodiment of present invention, sealing medium is filled with in described confined space.Described end cap, sealing between described base and described connecting line can be ensured thus equally.
According to one embodiment of present invention, be provided with the support member for supporting described sensing element in described confined space, the edge of described elastic sealing element is clamped between described support member and described base.Not only can improve the stability of described sensing element in described confined space thus, and can so that the location of described elastic sealing element.
According to one embodiment of present invention, the cross section of described support member is annular, and the periphery wall of described support member is provided with fitting recess, and the edge of described elastic sealing element is engaged in described fitting recess.The stability of the position of described elastic sealing element can be improved thus.
According to one embodiment of present invention, the cross section of described support member is for annular and described support member is provided with flanging, and described flanging is provided with locating slot, and the edge of described elastic sealing element is engaged in described locating slot.The position stability of described elastic sealing element can be ensured thus, and be beneficial to the perceived accuracy improving described sensing element.
According to one embodiment of present invention, described support member and described elastic sealing element are integrally formed.The sealing of described confined space can be improved thus further.
According to one embodiment of present invention, described elastic sealing element has induction region, and described induction region is exposed to described pilot passage.So not only so that pressure in pilot passage described in described sensing element indirect detection, and can improve the structural strength of described elastic sealing element.
A second aspect of the present invention proposes a kind of pressure cooker, and described pressure cooker comprises pressure sensor described according to a first aspect of the invention.
Pass through to utilize pressure sensor described according to a first aspect of the invention according to the pressure cooker of the embodiment of the present invention, still normally can work under some rugged environments, there is the advantage such as dependable performance, long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure sensor according to the embodiment of the present invention.
Fig. 2 is the sectional view of pressure sensor according to an embodiment of the invention.
Fig. 3 is the sectional view of pressure sensor in accordance with another embodiment of the present invention.
Fig. 4 is the sectional view of pressure sensor in accordance with another embodiment of the present invention.
Fig. 5 is the sectional view of pressure sensor in accordance with another embodiment of the present invention.
Fig. 6 is the sectional view of pressure sensor in accordance with another embodiment of the present invention.
Reference numeral: pressure sensor 1, housing 100, base 110, end cap 120, pressure detecting chamber 130, confined space 131, pilot passage 132, elastic sealing element 200, induction region 210, sensing element 300, circuit board 310, chip 320, connecting line 330, sealing ring 400, sealing medium 500, support member 600, flanging 610, end cap seal part 700.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to Fig. 1-Fig. 6, the pressure sensor 1 according to the embodiment of the present invention is described.As shown in figs 1 to 6, housing 100, elastic sealing element 200 and sensing element 300 is comprised according to the pressure sensor 1 of the embodiment of the present invention.
There is in housing 100 pressure detecting chamber 130.Elastic sealing element 200 is located in pressure detecting chamber 130, the pilot passage 132 that pressure detecting chamber 130 sealed separation is become confined space 131 and is in communication with the outside by elastic sealing element 200.Sensing element 300 is located in confined space 131.
Pressure sensor 1 according to the embodiment of the present invention passes through to arrange elastic sealing element 200 in pressure detecting chamber 130, can utilize elastic sealing element 200 that pressure detecting chamber 130 sealed separation is become confined space 131 and pilot passage 132, sensing element 300 is placed in confined space 131, the pressure in confined space 131 can be changed when pressure extrudes elastic sealing element 200, thus indirectly-acting is in sensing element 300, realize the function of pressure sensor 1 indirect detection pressure.Specifically, pressure in pilot passage 132 can act on the part that elastic sealing element 200 is exposed to pilot passage 132, and then the pressure size that can change in confined space 131, the pressure of sensing element 300 by the pressure in perception confined space 131 in indirect perception pilot passage 132.Because pressure sensor 1 adopts indirect pressure-sensitive mode, can ensure that sensing element 300 is not affected by the external environment like this.That is, no matter how poor working environment is, foreign matter and impurity all can be blocked by elastic sealing element 200 and can not come in contact with sensing element 300, not only can ensure the dependable performance of sensing element 300 thus, and sensing element 300 can be avoided to be damaged by foreign matter.In brief, pressure sensor 1, by adopting the mode of indirect pressure-sensitive, can not only realize the function of accurate detected pressures, and sensing element 300 can be isolated from the outside, play a good protection to sensing element 300.Therefore, according to the pressure sensor 1 of the embodiment of the present invention, there is not fragile, the advantage such as dependable performance, long service life.
Wherein, can be air in confined space 131, also can inject filler.
Further, as shown in figs 2-4, elastic sealing element 200 can have induction region 210, and induction region 210 can be exposed to pilot passage 132, and induction region 210 can protrude by guide pressure passageway 132.Pressure in pilot passage 132 acts on induction region 210, and then changes the pressure in confined space 131.By arranging induction region 210 on elastic sealing element 200, not only so that pressure in sensing element 300 indirect detection pilot passage 132, and can improve the structural strength of elastic sealing element 200, avoid Long-Time Service and occur breakage.
Fig. 1-Fig. 6 shows pressure sensor 1 according to an embodiment of the invention.As Figure 1-Figure 4, housing 100 can comprise base 110 and end cap 120, and end cap 120 can be sealedly connected on base 110 and end cap 120 can limit pressure detecting chamber 130 jointly with base 110.First sensing element 300 and elastic sealing element 200 can be arranged on like this after in pressure detecting chamber 130, then end cap 120 is sealedly connected on base 110.Can, so that the installation of sensing element 300 and elastic sealing element 200, the assembling of pressure sensor 1 namely can be made convenient thus.
As shown in Fig. 2-Fig. 6, sensing element 300 can comprise circuit board 310 and chip 320.Circuit board 310 can be located in confined space 131.Chip 320 can be located on circuit board 310.Particularly, chip 320 can be relative with pilot passage 132.Pressure in chip 320 perception confined space 131 by Signal transmissions to circuit board 310.Can realize the pressure detecting function of sensing element 300 thus, and the structure of sensing element 300 is simple, easy to manufacture.
Wherein, sensing element 300 can also comprise connecting line 330, and end cap 120 can be provided with through hole, and one end of connecting line 330 can be connected on circuit board 310 and the other end of connecting line 330 can stretch out confined space 131 from described through hole.Pressure signal is transferred to governor circuit by connecting line 330 by circuit board 310.Like this can so that being connected and installed of pressure sensor 1.
In one embodiment of the invention, in order to ensure end cap 120, sealing between base 110 and connecting line 330, sealing ring 400 can be set between end cap 120 and base 110, and end cap seal part 700 is set between connecting line 330 and end cap 120, namely end cap seal part 700 is set in described through hole.The gap between sealing ring 400 end cover 120 and base 110 can be utilized thus, and the gap that end cap seal part 700 is tightly connected between line 330 and end cap 120 can be utilized.
Wherein.End cap seal part 700 can be silica gel sealing ring, also can for being filled in the silica gel in described through hole after hot melt.
Advantageously, as shown in figs 2-4, end cap 120 can be provided with mounting groove, sealing ring 400 can be positioned at described mounting groove.Described mounting groove can be utilized like this to position sealing ring 400, thus the sealing that end cap 120 is connected with base 110 can be improved further.
In the present embodiment, in order to improve the sealing of confined space 131 further.Elastic sealing element 200 can be extended, be connected with sealing ring 400 to make the edge of elastic sealing element 200.
Certainly, end cap 120, sealing between base 110 and connecting line 330 also can adopt alternate manner to ensure.Such as, in another embodiment of the present invention, sealing medium 500 can be filled with in confined space 131.Specifically, sealing medium 500 can be filled in above circuit board 310, at end cap 120, between base 110 and connecting line 330.Wherein, sealing medium 500 can be marine glue or epoxy resin.The gap of sealing medium 500 simultaneously between end cover 120 and base 110 and the gap between end cap 120 and connecting line 330 can be utilized like this.End cap 120, sealing between base 110 and connecting line 330 can be ensured thus equally.
Fig. 2-Fig. 6 shows the pressure sensor 1 according to the present invention's concrete example.As shown in Fig. 2-Fig. 6, can be provided with the support member 600 for supporting sensing element 300 in confined space 131, circuit board 310 can be supported on support member 600, and the edge of elastic sealing element 200 can be clamped between support member 600 and base 110.So not only can improve the stability of sensing element 300 in confined space 131, and support member 600 can be utilized to fix elastic sealing element 200, to realize the location of elastic sealing element 200.
Wherein, the structure of elastic sealing element 200 can adjust, as long as ensure that elastic sealing element 200 can sealed separation confined space 131 and pilot passage 132 according to the structure change of other parts in pressure sensor 1.
Such as, as shown in Figure 2 and Figure 5, the cross section of support member 600 can be annular, the upper end of support member 600 can arrange around chip 320 and lower end can be arranged around pilot passage 132, base 110 can be formed the structure coordinated with support member 600, the periphery wall of support member 600 can be provided with fitting recess, the edge of elastic sealing element 200 can be engaged in described fitting recess, and the edge of elastic sealing element 200 can be clamped between the periphery wall of support member 600 and base 110 and between the lower surface of support member 600 and base 110.The stability of elastic sealing element 200 in pressure detecting chamber 130 can be improved thus.
Support member 600 can for having other structure, as shown in Figure 3 and Figure 6, the cross section of support member 600 can be annular and support member 600 can be provided with flanging 610, the upper end of support member 600 can arrange around chip 320 and lower end can be arranged around pilot passage 132, base 110 can be formed the structure coordinated with support member 600, flanging 610 can be provided with locating slot, the edge of elastic sealing element 200 can be engaged in described locating slot, and the edge of elastic sealing element 200 can be clamped between the bottom surface of flanging 610 and base 110.Can ensure the stability of elastic sealing element 200 thus equally, and confined space 131 is less, is beneficial to the perceived accuracy improving sensing element 300.
Further, support member 600 and elastic sealing element 200 can be integrally formed.The sealing of confined space 131 can be improved thus further.
In the embodiment sealed by sealing ring 400 between end cap 120 and base 110, as shown in Figure 4, elastic sealing element 200, sealing ring 400 and support member 600 three can be integrally formed.That is, sealing ring 400 and support member 600 can adopt elastomeric material one-body molded with elastic sealing element 200.
Pressure cooker according to the embodiment of the present invention is described below, and described pressure cooker comprises pressure sensor 1 according to the above embodiment of the present invention.
According to the pressure cooker of the embodiment of the present invention by utilizing pressure sensor 1 according to the above embodiment of the present invention, still normally can work under some rugged environments, there is the advantage such as dependable performance, long service life.
Be all known for those of ordinary skills according to the pressure cooker of the embodiment of the present invention and operation, be not described in detail here.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.In addition, the different embodiment described in this description or example can carry out engaging and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (14)
1. a pressure sensor, is characterized in that, comprising:
Housing, has pressure detecting chamber in described housing;
Elastic sealing element, described elastic sealing element is located in described pressure detecting chamber, the pilot passage that described pressure detecting chamber sealed separation is become confined space and is in communication with the outside by described elastic sealing element;
Sensing element, described sensing element is located in described confined space.
2. pressure sensor according to claim 1, is characterized in that, described housing comprises base and end cap, and described end cap seal to be connected on described base and jointly to limit described pressure detecting chamber with described base.
3. pressure sensor according to claim 2, is characterized in that, described sensing element comprises:
Circuit board, described circuit board is located in described confined space; With
Chip, described chip is located on described circuit board.
4. pressure sensor according to claim 3, is characterized in that, described sensing element also comprises connecting line, and described end cap is provided with through hole, and one end of described connecting line is connected on described circuit board and the other end stretches out described confined space from described through hole.
5. pressure sensor according to claim 4, is characterized in that, is provided with sealing ring between described end cap and described base, is provided with end cap seal part between described connecting line and described end cap.
6. according to the pressure sensor described in claim 5, it is characterized in that, described end cap is provided with mounting groove, and described sealing ring is positioned at described mounting groove.
7. according to the pressure sensor described in claim 5, it is characterized in that, the periphery of described elastic sealing element is along being connected with described sealing ring.
8. pressure sensor according to claim 4, is characterized in that, be filled with a sealing in described seal cavity medium.
9. pressure sensor according to claim 1, is characterized in that, is provided with the support member for supporting described sensing element in described confined space, and the edge of described elastic sealing element is clamped between described support member and described base.
10. pressure sensor according to claim 9, is characterized in that, the cross section of described support member is annular, and the periphery wall of described support member is provided with fitting recess, and the edge of described elastic sealing element is engaged in described fitting recess.
11. pressure sensors according to claim 9, is characterized in that, the cross section of described support member is for annular and described support member is provided with flanging, and described flanging is provided with locating slot, and the edge of described elastic sealing element is engaged in described locating slot.
12. pressure sensors according to claim 9, is characterized in that, described support member and described elastic sealing element are integrally formed.
13. pressure sensors according to any one of claim 1-12, it is characterized in that, described elastic sealing element has induction region, and described induction region is exposed to described pilot passage.
14. 1 kinds of pressure cookers, is characterized in that, comprise the pressure sensor according to any one of claim 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451308.3A CN104510330B (en) | 2013-09-27 | 2013-09-27 | Pressure sensor and pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451308.3A CN104510330B (en) | 2013-09-27 | 2013-09-27 | Pressure sensor and pressure cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104510330A true CN104510330A (en) | 2015-04-15 |
| CN104510330B CN104510330B (en) | 2017-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310451308.3A Expired - Fee Related CN104510330B (en) | 2013-09-27 | 2013-09-27 | Pressure sensor and pressure cooker |
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| Country | Link |
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| CN (1) | CN104510330B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054211A1 (en) * | 2015-10-01 | 2017-04-06 | 史利利 | Pressure sensor and pressure cooker |
| CN107907248A (en) * | 2017-12-27 | 2018-04-13 | 苏州康姆普机械有限公司 | A kind of pressure sensor being stably connected with |
| CN108106756A (en) * | 2017-12-27 | 2018-06-01 | 苏州康姆普机械有限公司 | A kind of detachable pressure sensor |
| CN109996475A (en) * | 2017-01-27 | 2019-07-09 | 松下知识产权经营株式会社 | Pressure type cooking device and pressure sensor unit |
| CN112082688A (en) * | 2020-08-26 | 2020-12-15 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
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| CN203493404U (en) * | 2013-09-27 | 2014-03-26 | 美的集团股份有限公司 | Pressure sensor and pressure cooker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017054211A1 (en) * | 2015-10-01 | 2017-04-06 | 史利利 | Pressure sensor and pressure cooker |
| CN109996475A (en) * | 2017-01-27 | 2019-07-09 | 松下知识产权经营株式会社 | Pressure type cooking device and pressure sensor unit |
| CN109996475B (en) * | 2017-01-27 | 2021-06-15 | 松下知识产权经营株式会社 | Pressure cooker and pressure sensor unit |
| CN107907248A (en) * | 2017-12-27 | 2018-04-13 | 苏州康姆普机械有限公司 | A kind of pressure sensor being stably connected with |
| CN108106756A (en) * | 2017-12-27 | 2018-06-01 | 苏州康姆普机械有限公司 | A kind of detachable pressure sensor |
| CN112082688A (en) * | 2020-08-26 | 2020-12-15 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
| CN112082688B (en) * | 2020-08-26 | 2022-04-26 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
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|---|---|
| CN104510330B (en) | 2017-10-27 |
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