CN100443009C - Improved personal care device with thermal feedback and operation conditions display - Google Patents

Improved personal care device with thermal feedback and operation conditions display Download PDF

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Publication number
CN100443009C
CN100443009C CNB038235153A CN03823515A CN100443009C CN 100443009 C CN100443009 C CN 100443009C CN B038235153 A CNB038235153 A CN B038235153A CN 03823515 A CN03823515 A CN 03823515A CN 100443009 C CN100443009 C CN 100443009C
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China
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machine
sending out
display unit
hair
dryer
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Expired - Fee Related
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CNB038235153A
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CN1684602A (en
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陈永坚
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Individual
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Individual
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    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00Hair drying devices; Accessories therefor
    • A45D20/22Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A45D20/30Electric circuitry specially adapted for hair drying devices
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00Hair drying devices; Accessories therefor
    • A45D20/04Hot-air producers
    • A45D20/08Hot-air producers heated electrically
    • A45D20/10Hand-held drying devices, e.g. air douches

Abstract

The present invention relates to an individual nursing device, such as a blower. The device is provided with a thermal feedback sensor at the part approaching to an air outlet, and when the temperature rises to a prearranged threshold temperature, the thermal feedback sensor automatically reduces the output of heat power. The device also comprises a display with patterns and digitals for indicating the operating states of the device.

Description

A kind of improved personal care device with heat feedback and duty demonstration
Technical field
The present invention relates to personal care device, particularly have the personal care device of heater element and motor-driven fan.The invention still further relates to hair-protecting device with liquid crystal display.In particular, the present invention relates to but be not limited to have hair-dryer and the warm-air drier that overheat protector and duty show.
Background technology
Personal care device with heater element and Motor Drive fan is generally used for increasing individual's comfort sense or individual's modification.
For example, have hair-protecting devices such as the hair-dryer of heater element and Motor Drive fan or the rod of perming, it provides and can force air pyrotoxin that flow, easy, local, is used for hair care or typing at short notice so that blow out warm braw.In this type of is used, need thermal power rank and fan speed to have wide excursion usually, so that satisfy the special individual comfort level and the requirement of modification.For example: to wet oven dry and the typing of sending out, need higher calorific power rank and high fan speed, general hair fixing then needs low the grade or medium thermal power rank and medium fan speed.
Same, for warm-air drier,, need higher calorific power rank and high fan speed if warmed up rapidly in cold space; And the temperature and humidity of relative comfort in the maintenance room only needs medium or low thermal power rank and medium fan speed.
For the requirement of the wide region that adapts to operate power, the heater element that is equipped with in the most such personal care device must be able to operate in the power output of a wide region.The rated value of the operate power of the standard of this type of heater element is generally in the scope of several hectowatts to 2000-3000 watt.
The most such personal care device generally includes a main casing, and this main casing is an air duct with air inlet and gas outlet.The centre position of heater element operated by rotary motion between air inlet and gas outlet makes downstream (downstream) air leaving before this device carries out hair fixing or other related application, warms or heating.These personal care devices generally provide the user control interface device, as control button or rocker switch, have a plurality of thermal power ranks and fan speed and set.Other setting of thermal power level generally is divided into discontinuous rank, calibrates under the straightway situation by air duct of hypothesis air then.Under this hypothesis, the hot-air of discharging from the mouth of pipe or gas outlet according in advance setting will be in temperature more stable, easy to use, safety.Yet such was the case with for situation, and when the outlet of gas channel got clogged, the temperature of heater element was improved fully.The position of placing as, gas outlet or the mouth of pipe is with user's head or with other barrier surface when too near.Air-flow by gas channel is subjected to unnecessary obstruction causes the circulation of air deficiency, thereby temperature of heating elements is raise, and this may cause injury to personnel that breaking out of fire is set.Therefore, be necessary for this personal care device a kind of improved safety guard is provided, alleviate or avoid using this type of device and the risk that is injured fire that causes.
In addition, the personal care device of this class provides the switch that can select for the user, and these switches have been divided discontinuous rank, are used to be provided with duty, this class gauge tap is generally the form of rocker switch, can not provide any operation information useful, that can indicate for the user.Therefore, be necessary to transmit Useful Information for the user by a kind of device of improvement project.
Summary of the invention
Accordingly; the purpose of this invention is to provide personal care device with safety guard; such as: hair-dryer, do and send out a kind of personal care devices such as machine, hair-dryer and warm-air drier, the excess temperature that produces with the unfavorable or inappropriate duty of alleviator and cause the risk of injury to personnel or fire.
Another object of the present invention is to the user provides improved personal care device, it has scheme and device to user's conveyer duty directly perceived, to strengthen interactively operation between user and device.The most basic purpose of the present invention is, a kind of improved personal care device is provided, as hair-dryer, and hair-dryer, curler, warm-air driers etc. think that the public provides another kind of selection.
According to first goal of the invention of the present invention, a kind of personal care device is provided, as hair-dryer or warm-air drier, comprise: a main casing; One motor; One Motor Drive fan; A heater element; Control device; One heat induction device; Described main casing is a gas channel with air inlet and gas outlet; Described heater element is arranged on the centre position between described air inlet and the described gas outlet; Described heat induction device is arranged on the position that is close to described gas outlet, and provides temperature information to described control device; Described control device comprises the memory of storing temperature information; Described control device also comprises the device of more described heat induction device temperature information that receives and the temperature information that prestores.When the temperature of the temperature information correspondence that receives surpasses a predetermined threshold (threshold), described control device reduces the thermal power output of described heater element according to predetermined way.
According to second goal of the invention of the present invention, a kind of personal care device is provided, as bonnet for hair blower, hair-dryer, curler and warm-air drier, on the main casing of this personal care device display unit is set, show the instant duty of described device.
Description of drawings
Below in conjunction with accompanying drawing, describe the present invention in detail by preferred embodiment of the present invention:
Figure 1 shows that the hybrid circuit schematic diagram of the way circuit that the general circuit of the preferred embodiment of a hair-dryer is arranged, wherein reach (fronted) sensor circuit is connected with microcontroller, is used for automatic feedback control hair-dryer thermal power and exports;
Example shown in Fig. 2 circuit theory diagrams is the overall more detailed circuit arrangement of Fig. 1 hair-dryer;
Fig. 3 is circuit theory diagrams, and the way circuit that shows second preferred embodiment of hair-dryer of the present invention is arranged, and wherein includes first preferred embodiment of the display unit that is used to indicate the hair-dryer duty;
Figure 4 shows that being changed to of series of displays is used for the example of the screen display of Fig. 3;
Figure 5 shows that a way circuit figure, show another preferred embodiment of the control of hair-dryer among Fig. 1 and display circuit;
Figure 6 shows that a series of figures of display unit show the example that designs among Fig. 5;
Figure 7 shows that the partial exploded view that is used to illustrate hair-dryer of the present invention.
The specific embodiment
The partial exploded view of the hybrid circuit of Fig. 1 and block diagram and Fig. 7 illustrates an examples of applications, that is, heat induction device is used for automatically heat feedback, with the operation of the heater element of control hair-dryer 10.Circuit arrangement comprises: shift circuit 100 before the thermoinduction, one synchronous circuit 110, its AC power that is connected with hair-dryer is synchronous, control device 120 is a micro controller unit (MCU:micro-controllerunit) in the present embodiment, one first heater element 130 and in parallel with second heater element 140, and by the control of separately switch.From following description, can know and find out, in the different moment in AC power cycle, can be by selecting to open the thermal power output that an independent heater element come flexibly and accurately to change hair-dryer.
Broadly, heat induction device is a negative temperature coefficient device (NTC:negativetemperature coefficient) in the present embodiment, and it is arranged on and is easy to survey hair-dryer 10 instant work temperature position.The output of heat induction device is connected an input of micro controller unit 120, and the temperature information for MCU provides induction is used for relevant work.Thermal induction element, i.e. NTC element in the present embodiment, it is connected with biasing circuit, so that the change in electrical characteristics of NTC spare is converted to the signal of telecommunication that MCU can use.
In this example, NTC device one end is connected with voltage distribution (VCC).The other end of NTC is connected with ground (ground) by a resistance (R shown in Fig. 1).With NTC device and resistance R interlink node be the output node of NTC device, the input of this NTC output node feed-in MCU.Capacitive means (C shown in Fig. 1) is connected across the resistance R two ends as delay buffer, in case too responsive to environment temperature variation or instantaneous interference.NTC spare 101 essence are a resistance, and this resistance temperature rising resistance reduces, and in the NTC device, the rising of a temperature will cause the reduction of a resistance.Therefore, the once raising meeting of output voltage detects at NTC device output node.This phenomenon is MCU when determining instant downstream (downstream) air themperature, and useful control information is provided.
The electrical characteristics of calibration in advance or tabulation NTC spare 101, for example, the resistance of NTC spare and the relation of temperature, MCU can directly measure output voltage and detect relation between the temperature, and is used to prevent that hair-dryer is overheated.For example, will with the particular thermal power of hair-dryer and fan speed be provided with corresponding for information about, as, the voltage of maximum temperature threshold, the output of NTC output node, depositing one in has in the storage device of access relationships with MCU.In case the indicated temperature of the output voltage of NTC device surpasses the temperature threshold values, microcontroller sends to instruction control circuit, with minimizing, even closes thermal power output.
In this specific embodiments, use lossless thermal power output control method to be one and make things convenient for preferred example.In this scheme, this first heater element and second heater element by selectable unlatching first heater element and/or second heater element, reduce thermal power output at certain part of AC power switch individually.In the present embodiment, use two can be separately with the parallel connection combination of the heater element of switch, just can provide a kind of have more general, flexibly and accurate thermal power export the variation scheme.
For example, open two heater elements continuously in the whole cycle of AC power, thermal power output rank can reach maximum.In some cycles of AC power, selectively open or close one or two heater element, can reduce thermal power output.Can pass through such as reducing thermal power output: the positive half cycle in AC power is opened first heater element, and only closes second heater element at the AC power negative half period.According to the AC power cycle, in the multiple possible combination of start-up time, optionally open first and second heater elements, to reduce whole power output.
The disadvantageous harmonic wave that produces because optionally open first and second heater elements in order to reduce, in the whole cycle of AC power, the power consumption rank is even more good more.But in the cycle of AC power,, produce stronger harmonic wave if use the technology of power shutoff then can cause power consumption difference or interruption.Therefore, need in the cycle of AC power, open heater element uniformly.In order to reach this purpose, the input of synchronous circuit 110 is connected with AC power, and output is connected with MCU120.Synchronous circuit provides the temporal information of AC power, and with near the zero cross point or zero cross point of AC power, or the suitable start-up time of other some decision heater element, thereby reducing humorous involving alleviates other unfavorable effect.In this preferred embodiment, used TRIAC, synchronous circuit provides useful trigger message and temporal information to be used to start TRIAC.
In this specific embodiments, by power shutoff optionally, or optionally open in due course and close heater element and reach minimizing power, provide a kind of power to reduce lossless scheme, and the start-up time of heater element, control was important for reducing disadvantageous harmonic wave.Certainly, the loss scheme that also can the service wear thermal power reduces.Reduce in the loss scheme in thermal power, with losser, as load resistance etc., usually with a heater element or heater element combination polyphone, by the extra or unnecessary electrical power of losser consumption.In this loss scheme, the problem of unfavorable harmonic wave is also not serious usually, and required heater element scheme start-up time is not strict yet, and can not need synchronous circuit.
Be illustrated in figure 2 as a more detailed circuit diagram of circuit among Fig. 1.As shown in the figure, thermoinduction circuit 100, first heater element 130, second heater element 140 reach the synchronous circuit 110 that is connected with MCU120.In addition, the user control interface device comprises: a fan speed is provided with button 150, one heating ranks button 160 is set.In addition, be used to indicate the display unit 170 of hair-dryer duty, it is connected with the MCU120 output, transmits the corresponding work state by MCU120, and is presented on the display unit.One direct current motor 180 forces air to flow, and makes hair-dryer blow out air-flow, and a rectifier bridge is in order to provide necessary dc source.Also set up heater element 190 between AC power and rectifier bridge, be used to adjust or slow down voltage difference between specified input voltage of rectifier and the ac power output.
With reference to hair-dryer among Fig. 7, the work of hair-dryer is described.As shown in Figure 7, hair-dryer 10 comprises: the main casing 11 with tube 12 and handle 13; One first heater element 130; One second heater element 140; One motor and Motor Drive fan 180 operated by rotary motion are in tube 12.Easy to use for the user, the user control interface device comprises: fan speed control button and heating rank are provided with button, preferably the user control interface device are arranged on the outside of handle portion.Tube forms a upstream (upstream) air inlet 14 near handle portion, form the gas outlet 15 in a downstream (downstream) at the tube other end.Heater element is preferably disposed on the centre position between air inlet 14 and the gas outlet 15.In the present embodiment, heat induction device, or NTC element 101 is arranged on the position near gas outlet 15, and during operate as normal, the air themperature of discharge rises; If when running into disadvantageous condition of work, the temperature of this position can raise rapidly.According to predetermined fan speed, when the thermal power control button was set at an intended level, under operate as normal, the warm braw that the gas outlet blows out can not surpass temperature threshold usually.This type of temperature threshold is represented by an electrical quantity characteristic of thermoinduction circuit usually.In the present embodiment, at the maximum voltage output expression temperature threshold at output node 102 places of NTC.
When the warm braw of hair-dryer or hot blast blew to the obstacle surface, because circulation of air or heat radiation are not enough, the temperature of heater element raise.If hair-dryer continues to be hindered, may cause the heater element red heat that becomes, and cause the user injured or cause fire.In the present embodiment, when detecting the too high signal of an indicated temperature, microcontroller 120 can reduce thermal output accordingly to avoid this type of danger.If in the detection subsequently, if detecting the output voltage of thermal sensor, MCU returns to a level of security, then recover normal thermal power output.As mentioned above, though lossless scheme is the preferred version of energy conservation and environmental protection, loss scheme or lossless scheme can reduce thermal power output.Certainly, in loss scheme and lossless scheme, can use hot FEEDBACK CONTROL layout (topology).
As shown in Figure 3, control and display circuit for one second of hair-dryer one preferred embodiment.The hair-dryer circuit comprises: motor 280, but its shunt resistance with switch is in parallel, and this shunt resistance is used for velocity variations by switch SW 2 250 controls; But reach the ionization circuit of a switch, be provided for the ionizable warm braw of hair fixing.Also show in addition, a heating rank gauge tap SW1 260, it can control the setting of a plurality of discontinuous thermal power rank by switch.The duty of switch SW 2 250, ion circuit 261 and thermal power rank switch SW 1 is connected with the input of MCU.The output of MCU is connected with a display unit 270, is used to show the duty of hair-dryer.
For example, when diverting switch SW2 250 closures, when electromotor velocity was low, the SW2 terminals were drawn high, owing to be connected with the reversal connection circuit at input PB3 and 2 250 of switch SW, the input PB3 of MCU220 can detect a low signal.Equally, whether MCU just can detect the ionization circuit and move by detecting series connected switches " IONIC SW " 262 closed or disconnections.When IONIC SW 262 closures, terminals are high potential, and MCU220 input PB4 can detect a low signal.Similarly, when thermal power rank selector switch SW1 260 was set to the higher calorific power rank corresponding with high power output, the input PB1 of MCU220 detected an electronegative potential, and another input PB0 keeps high potential.On the other hand, when switch SW 1 260 was set to low thermal power rank, the input PB0 of MCU became electronegative potential, and input PB1 keeps high potential.Therefore, by the state of scanning port PB0 and PB1, MCU can judge real-time thermal power rank setting, and sends relevant work state information to display unit.Display unit can be LCD (LCD:Liquid Crystal Display) or other suitable display, comprises that a plurality of input nodes are used to connect the MCU output node.
By MCU is carried out suitable configuration and programming, the duty of the hair-dryer that each input port of MCU is surveyed and monitored or parameter can be presented at device and show in the control signal that converts to of output port.Shown among Fig. 4 that a series of possible information show, it may be displayed on the display unit with reflection hair-dryer duty.
For example, in this preferred hair dryer, there are two speed settings and two thermal power ranks setting and only to be used to blow the additional cold wind setting of cold wind, have five groups of combinations and be provided with.The duty of hair-dryer is presented on the display unit.
In the preferred embodiment of display unit, the graphics device that is listed as with Far Left one is an example, and first row shows corresponding with the work value of setting 1-5; Second row is used to show the setting of current thermal power rank, represents wattage with digital form, and whether the third line is used to indicate anion to disperse circuit to be in service.On display unit the right, 8 indicators are arranged, be used to indicate the temperature of the gas that hair-dryer blows out.Usually, when indicator light many more, the expression temperature high more, when 8 indicators are all lighted, the expression hair-dryer be operated in the highest operating temperature.
Secondary series display unit as shown in Figure 4, most demonstration change identical with the situation of above-mentioned first row, and except 8 indicators were used to indicate blower fan speed, it is identical with the first row display unit that display unit changes the represented meaning.Because of having only two power settings, 8 indicators are divided into two viewing areas, and each viewing area comprises 4 indicators.When hair-dryer ran up, 8 indicators were bright entirely.On the other hand, when the hair-dryer low-speed running, have only preceding four indicators bright.Therefore, as can be seen, can display unit be set flexibly, provide the desirable information that is beneficial to the user.Except the Presentation Function parameter, out of Memory also may be displayed on the same display unit as trade mark, sign or other ownership sign 500 etc. of manufacturer, or is presented on the hair-dryer main casing by LCD, LED or other display unit that is fit to.
Fig. 5, Figure 6 shows that a hair-dryer, it has the hair-dryer of the second preferable control device and display unit 370.In this hair-dryer, no longer the basic function that hair-dryer is often had is described in detail.Comprise in this hair-dryer: a plurality of gauge tap SW1-SW6 progressively or progressive, it is divided into three groups, i.e. SW1 and SW2, SW3 and SW4, SW5 and SW6.For example, switch SW 1 360 and SW2 control corresponding to heater element, and SW3 and SW4 350 are corresponding to fan speed control, and SW5 and SW6 361 control corresponding to ion generator.Press SW1, MCU can progressively increase thermal power output before SW1 is decontroled.On the other hand, when pressing SW2, MCU can control the output of heater element minimizing thermal power before SW2 is decontroled.When SW1 and SW2 were not pressed, hair-dryer continued current working state.Similarly, press SW3 after, MCU constantly increases fan speed before unclamping SW3 or reaching maximal rate.Be in the same manner, press SW4 after, unless motor stops or switch is released, MCU constantly reduces fan speed.Ionization control device SW5 and SW6 are generally operational under the same principle.
In this preferred embodiment, press the matrix that the input 20-24 of the function MCU that gauge tap realizes forms, wherein, port 20 is corresponding to heater element control, and port 21 is corresponding to fan speed control, and port 22 is controlled corresponding to ion generator.Similarly, MCU port 24 rises corresponding to one and adjusts indication, and port 23 is adjusted corresponding to descending.Certainly, also can carry out other setting.By using matrix form combination control, the demand that the user changes duty can obtain persistent surveillance and satisfied.A kind of multi-form demonstration is provided in this preferred embodiment.The demonstration of present embodiment comprises a liquid crystal indicator, has two groups of bar shaped displays of representing speed and temperature respectively on the liquid crystal indicator, comprises that also an ion generator triggers demonstration.Liquid crystal indicator is connected with MCU, and MCU provides signal according to detected duty, and speed and temperature show bar provide a kind of corresponding multistage indicator with this signal.
In shown in Figure 6 three row are shown as LCD information and show possible variation, and LCD information shows that being divided into speed demonstration, temperature demonstration and ionization by row shows.
To explanation of the present invention, embodiment only is used to illustrate the present invention as can be seen by above several preferred embodiments, and non-limiting the spirit and scope of the present invention.Foregoing is used to illustrate total principle of the present invention and spirit.Particularly, for person skilled in the art person, variation that all are tangible, small or modification comprise all improvement based on the present invention, all should regard the scope of the present invention that falls into as.In addition, though the present invention will be described for the hair-dryer by having lossless power reduction scheme, as can be seen, whether no matter through improving, the present invention can also be applied to other hair-dryer and air-heater, and irrelevant with the pattern of power reduction scheme.

Claims (7)

1. do the machine of sending out for one kind, it is characterized in that, comprising: a main casing, a motor, a Motor Drive fan, two heater elements, control device, a heat induction device,
Described main casing is a gas channel with an air inlet and a gas outlet; Described heater element is arranged in the middle of described air inlet and the described gas outlet; Described heat induction device is arranged on the position near described gas outlet, is used for providing temperature information to described control device; Described control device includes the memory that is used for storing temperature information, described control device also comprises and will be received from the device that the temperature information of described heat induction device and the temperature information that prestores compare, when the temperature of the temperature information correspondence that is received from described heat induction device surpasses a predetermined threshold value, described control device selects to open described two heater elements according to predetermined way at the zero cross point of AC power, to reduce thermal power output.
2. the machine of sending out of doing according to claim 1 is characterized in that described predetermined way comprises: with a plurality of predetermined discontinuous thermal powers and fan speed corresponding a plurality of predetermined set is set.
3. the machine of sending out of doing according to claim 1 is characterized in that, further includes: display unit, this display unit is arranged on the described main casing, is used to indicate the described real-time working state of doing the machine of sending out.
4. the machine of sending out of doing according to claim 3 is characterized in that described display unit comprises pattern identification, is used to show the described duty of doing the machine of sending out, and this duty comprises: fan speed rank and ion hair care trigger.
5. the machine of sending out of doing according to claim 3 is characterized in that described display unit comprises digital display, is used to show the realtime power of described heater element.
6. the machine of sending out of doing according to claim 5 is characterized in that, described display unit also includes and is used to show the described pattern identification of doing the fan speed rank of the machine of sending out and starting ion hair care duty.
7. according to any described machine of sending out of doing of claim 3 to 6, it is characterized in that described display unit includes a LCDs.
CNB038235153A 2002-08-01 2003-08-01 Improved personal care device with thermal feedback and operation conditions display Expired - Fee Related CN100443009C (en)

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CN02105673.1 2002-08-01
HK02105673 2002-08-01
PCT/IB2003/003080 WO2004012554A2 (en) 2002-08-01 2003-08-01 Improved personal care device with thermal feedback and operating conditions display

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CN100443009C true CN100443009C (en) 2008-12-17

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AU2003253119A1 (en) 2004-02-23
US20060093337A1 (en) 2006-05-04
WO2004012554A3 (en) 2004-05-21
AU2003253119A8 (en) 2004-02-23
WO2004012554A2 (en) 2004-02-12

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