CN105764376A - Hair styling iron - Google Patents
Hair styling iron Download PDFInfo
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- CN105764376A CN105764376A CN201380081147.1A CN201380081147A CN105764376A CN 105764376 A CN105764376 A CN 105764376A CN 201380081147 A CN201380081147 A CN 201380081147A CN 105764376 A CN105764376 A CN 105764376A
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- element heater
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 52
- 229910052742 iron Inorganic materials 0.000 title description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 100
- 230000004913 activation Effects 0.000 claims abstract description 30
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000004044 response Effects 0.000 claims abstract description 13
- 230000002159 abnormal effect Effects 0.000 claims description 31
- 238000013461 design Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000003685 thermal hair damage Effects 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 6
- 230000001052 transient effect Effects 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 206010019049 Hair texture abnormal Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004902 Softening Agent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003741 hair volume Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
- A45D1/28—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
- A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
- A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
- A45D2/001—Hair straightening appliances
Landscapes
- Control Of Temperature (AREA)
- Control Of Resistance Heating (AREA)
Abstract
A hair styling tool has a temperature adjustment control to mitigate thermal damage to the hair. The hair styling tool comprises a pair of heated jaws (10, 11) which can be closed to grip hair. The power control circuit (20) is responsive to an activation sensor (22) and a temperature sensor (21), wherein the activation sensor (22) senses when the jaws (10, 11) are closed and the temperature sensor (21) senses the temperature of the heating elements (13, 14) on the jaws (10, 11). In response to the first activation output, the power control circuit (20) begins monitoring the rate of change of temperature of the heating elements (13, 14) and operates the heating elements (13, 14) at a power level below the steady state power level in response to the rate of decrease exceeding a predetermined level.
Description
Technical field
The present invention relates to the electronics hair iron of the thermal finalization for hair and moulding, and the temperature of particularly forming hair hair iron regulates.
Background technology
Hair hair iron for bending or stretch hair uses the outer surface contacted with hair to be typically the heating element heater of plate shape or tubular.Heating element heater has relatively low thermal mass so that hair iron is prone to use, because they (such as several seconds) can reach operation temperature in a short period of time.Heating element heater is separately thermostatically controlled, and wherein supports hair on the heating element and can apply heat load, its temperature trending towards reducing heating element heater.As response, thermostat increases power to attempt to recover design temperature.The shortcoming using the forming hair hair iron of this conventional temperature regulation technology is to cause power consumption penalty, especially for battery powered hair hair iron, and performance is had obvious impact by power consumption penalty.
Owing to using low operating temperature can increase the moulding time, or producing poor modeling effect, therefore temperature should be set to top level and avoid hair is caused pyrolytic damage simultaneously.But, this is not simple thing, because if processing overlong time, the heat transmitted is likely to and causes pyrolytic damage.Except time-temperature curve, other factors also can affect the probability causing pyrolytic damage: the inherent character of such as individual human hair, puts on the inorganic agent (such as water or other softening agents) of hair and uses the mode (size of the pigtail of process, put on the tension force etc. of hair) of hair hair iron.Therefore, for user, select correct temperature to be difficult to reduce the probability of pyrolytic damage for any specific operation.
Patent disclosure US2012/0005550 describes the thermoregulator method of hair straightening hair iron, and wherein this hair straightening hair iron is provided with the temperature sensor of two temperature for sensing hair.These two sensors are installed on the opposite side of heating element heater, thus when pulling this hair iron along hair, a sensor measurement by the temperature of hair to be processed, the temperature of the hair that another sensor measurement has just been processed simultaneously.But, it practice, owing to two sensors are installed on identical element, their output is overwhelmed (overwhelmed) by the thermal output of element, is therefore difficult to obtain measurable difference between the output of two sensors.
Patent disclosure US2011/0253164 also illustrates the temperature control method of hair straightening hair iron, and wherein this hair straightening hair iron has two pawls for clamping hair.The Guan Bi of sensor probe claws also increases the design temperature of heating element heater.But, by so increasing power for heating element heater, the problem that the method does not solve to save power or avoid pyrolytic damage.
It is an object of the invention to overcome or substantially improve disadvantages described above and mouldability is not had a negative impact.More generally, it is an object of the invention to provide the forming hair hair iron of a kind of improvement.
Summary of the invention
According to an aspect of the invention, it is provided a kind of forming hair instrument, including:
At least one heating element heater, this heating element heater has and adds hot surface for what contact hair；
Paired pawl, described heating element heater be disposed in described pawl one of them on, described pawl is connected to move between the open and the closed positions, at described open position, it is possible to remove between described pawl or insert hair；In described make position, described hair is added hot surface extruding towards described by another of described pawl；
Temperature sensor, adds the temperature of hot surface described in the vicinity of heating element heater described in this temperature sensor senses；
Activating sensor, when pawl described in this activation sensor sensing is in described make position and produces the first activation output；
Power control circuit, this power control circuit is in response to described activation sensor and described temperature sensor, and operable is in steady state power level thus keeping the temperature at steady statue operating described heating element heater；
Described power control circuit includes the device of the time fall off rate of the temperature for determining described heating element heater, and for monitoring that the time fall off rate of described temperature and described temperature is to detect the device of the abnormal heat load on described heating element heater；
Described power control circuit is operable exports, to activate in response to described first, the detection started abnormal heat load, and is in the power level lower than described steady state power level in response to the abnormal heat load described heating element heater of operation.
Described steady state power level is cause the power level of steady statue component temperature, or its equivalent.Such as, constant power level, or the steady statue component temperature obtained by the power level of ringing, the time average of this hunting power level is considered steady state power level.Can be zero-power level lower than the described power level of described steady state power level.
Selectively, described instrument can also include user can select the input equipment of the multiple power settings for described heating element heater, described control circuit is operably connected to described input equipment and operable is in the steady state power level corresponding to the power setting selected by user operating described heating element heater, and in response to the detection to abnormal heat load, operate described heating element heater and be in the power level lower than the steady state power level relevant to the power setting selected by user.
Preferably, time fall off rate for monitoring described temperature and described temperature includes the device for being compared by the time fall off rate of measured temperature with the predetermined fall off rate representing abnormal heat load with the described device detecting abnormal heat load, when measured time fall off rate is less than described predetermined fall off rate, described monitoring arrangement detects abnormal heat load.Alternatively, owing to hair can't be lower than the temperature damage of critical temperature, device for monitoring the time fall off rate of described temperature and described temperature includes the device temperature sensed compared with predetermined critical temperature, only when the temperature sensed exceedes described predetermined critical temperature, described monitoring arrangement just detects abnormal heat load.
Preferably, the time fall off rate for monitoring described temperature and described temperature includes with the described device detecting abnormal heat load: for the temperature sensed calculating with first temperature, calculating temperature and the device compared lower than the described second the 3rd temperature calculating temperature lower than the second of this first calculating temperature；And by described measured temperature fall off rate and the first predetermined fall off rate, lower than the second predetermined fall off rate of this first predetermined fall off rate and the device that compares lower than the 3rd predetermined fall off rate of described second predetermined fall off rate, when the temperature sensed calculates temperature and measured fall off rate lower than described first predetermined fall off rate more than described first, or when the speed sensed calculates temperature and measured fall off rate less than described second predetermined fall off rate less than described second, or when the temperature sensed calculates temperature and measured fall off rate less than described three reference rate less than the described 3rd, described monitoring arrangement detects abnormal heat load.
When the speed sensed calculates temperature and measured fall off rate less than described first predetermined fall off rate more than described first, or when the temperature sensed exceedes described second calculating temperature and measured fall off rate less than described second predetermined fall off rate, or the temperature sensed exceedes the described 3rd when calculating temperature and measured fall off rate less than described three reference rate, described power control circuit is operable to reduce, with identical amount, the power level being applied to described heating element heater.Alternately, when the temperature sensed calculates temperature and measured fall off rate less than described first predetermined fall off rate more than described first, or when the temperature sensed exceedes described second calculating temperature and measured fall off rate less than described second predetermined fall off rate, or the temperature sensed exceedes the described 3rd when calculating temperature and measured fall off rate less than described three reference rate, described power control circuit is operable to be applied to the power level of described heating element heater with the first amount minimizing；And when the temperature sensed exceedes described second calculating temperature and measured speed less than described first reference rate, or when measured temperature exceedes described 3rd reference temperature and measured speed less than described second reference rate, described power control circuit is operable to reduce, with the second amount more than described first amount, the power level being applied to described heating element heater；And when the temperature sensed exceedes described 3rd reference temperature and measured speed less than described first reference rate, described power control circuit is operable to reduce, with the 3rd amount more than described second amount, the power level being applied to described heating element heater.
Preferably, the device for measuring described temperature fall off rate includes the time set for setting up interval at continuous print fall off rate between measuring；Described time set is set up from the first first, second and third interval activating the time exported and starting to calculate, and the fall off rate measured in the ending of described first, second and third interval compares with described first, second and third predetermined fall off rate respectively.
Preferably, described power control circuit stores the reference temperature exported corresponding to described steady state power, and described first, second and third calculating temperature is calculated by following mode: deduct first, second and third predetermined reference value from described reference temperature to limit described first, second and third predetermined fall off rate.
Preferably, described power control circuit operates described heating element heater with constant temperature mode and is in the first power level, this first power level changes as the function of temperature deviation to keep design temperature, described temperature deviation includes the difference between instantaneous component temperature and described design temperature, and wherein said power control circuit includes the device for being compared by described fall off rate with reference to fall off rate, and when measured fall off rate is more than described reference fall off rate, described power control circuit is in all temperature deviations with heating element heater described in enhancement mode operation to be all higher than the power level of described first power level, until the measured fall off rate detecting temp of heating element is in, less than described reference rate or described temp of heating element, the design temperature exported corresponding to described steady state power.
Preferably, when described pawl is in described open position, described activation sensor produces the second activation output, and described power control circuit activates when output exists operable described second, and at described heating element heater after being in lower than the power level operation of described steady state power level, at heating element heater described in enhancement mode operation, until the power level applied is again equal to described steady state power level, or until detects abnormal heat load and again occur.
Another aspect provides a kind of for the method controlling power at forming hair instrument, this forming hair instrument has heating element heater, temperature sensor, paired pawl and activation sensor, the temperature on the adjacent heating element surface of this temperature sensor senses heating element heater, described heating element heater be arranged in described pawl one of them on, described pawl is connected to move between the open and the closed positions, at described open position, can remove between described pawl or insert hair, in described make position, described hair is added hot surface extruding towards described by another of described pawl, when pawl described in described activation sensor sensing is in described make position and produces the first activation output；Said method comprising the steps of:
Operate described heating element heater and be in steady state power level；
When produce first activation output time, termly measure temperature and calculate temperature time fall off rate and by computed to speed compared with set rate, and
When measured temperature fall off rate is less than described set rate, reduce the power level being applied to described heating element heater to avoid by the overheated pyrolytic damage caused.
The invention provides forming hair hair iron, this forming hair hair iron is effective and efficient in operational use, and this forming hair hair iron has the simple designs of entirety manufacturing cost to be minimized.Respond according to measured rate temperature change, when detecting extremely low heat load, power can be saved by reducing the power of element, and avoid the overheated probability making pyrolytic damage to be mitigated by this method.
Accompanying drawing explanation
Hereinafter method by way of example is described with reference to the attached figures the preferred form of the present invention, wherein:
Fig. 1 is the schematic cross-section of the hair hair iron according to one embodiment of the present invention；
Fig. 2 is the functional block diagram of the circuit of the hair hair iron for Fig. 1；And
Fig. 3, Fig. 4 a, Fig. 4 b and Fig. 5 is the temperature of the heating element heater of the hair hair iron for Fig. 1 and the electric current diagram relative to time response, and shows the temperature diagram relative to the time of hair by heating element heats.
Detailed description of the invention
With reference to accompanying drawing, Fig. 1 shows the first embodiment of the hand-held electronic hair hair iron with the first elongation pawl 10 and the second elongation pawl 11, and wherein the first elongation pawl 10 and the second elongation pawl 11 can connect at their far-end.First elongation pawl 10 and the second elongation pawl 11 can be the shaped polymer structures of hollow, and include elongated heating element heater 13,14 accordingly at their far-end.Heating element heater 13,14 is the assembly of external part 16,17 including being made up of metal (such as chromium steel).It is complementary, generally flat inner surface that external part 16,17 adds hot surface 16a, 17a accordingly, and this inner surface was polished.Surface 16a, 17a toward each other and are configured to contact hair.External part 16,17 is heated by corresponding internal resistor element 15a, 15b, and internal resistor element 15a, 15b are configured to smooth structure and are directly arranged in external part 16,17.18 are supplied, for instance be connected to the electric wire of main power source, it is possible to provide power from power control circuit 20 to heating element heater 13,14 by power.Pawl 10,11 can pass through hinge 12 or arbitrarily similar mechanism connects, and its median claw 10,11 is connected and moves between open position (see Fig. 1) and make position (not shown).At open position, it is possible to insert between pawl or remove hair.In make position, pawl 10,11 clamps hair and extrudes this hair adding between hot surface 16,17.
Temperature sensor 21 and activation sensor 22 are also connected to power control circuit 20.Temperature sensor 21 senses the temperature close to the heating element assembly 14 adding hot surface 17a, and can be such as critesistor or thermocouple.Activate sensor 22 by machinery, optically or magnetically device sense pawl 10,11 when in the close position and produce be delivered to power control circuit 20 first activate output, and correspondingly provide when pawl is opened second activation output.
What be not depicted in Fig. 1 but be shown in Fig. 2 with simplified schematic form is input equipment 25 and display device 26.Such as, input equipment 25 is the press button of the multiple different power setting for allowing user selection heating element heater 13,14.Display device 26 is for showing the power setting selected by user.Power is passed through heating element heater 13,14 based on the feedback from temperature sensor 21 by power control circuit 20, for instance by switching on or off the electric current being fed to heating element heater 13,14.Each power setting and independent specific steady state power horizontal relevance, when not in use, it allows to be maintained at specific desired temperature or range of set value.
The operation temperature of restriction heating element heater 13,14 is important to avoid hair causes pyrolytic damage.Heat transfer mechanisms main in hair hair iron is the conduction from heating element heater 13,14 to hair.When pulling hair iron along hair, the dry hair of the typical case being firmly clamped 4 grams contacts well with adding hot surface 16a, 17a and provides good heat transmission.When used as such, the measure that the temperature of heating element heater 13,14 will be typically held in acceptable scope without any correction.
But, owing to abnormal low load can not provide sufficient heat transmission, it is thus possible to the temperature making heating element heater 13,14 is too high.The heat load easily causing the common exception of excessive heating low can be caused by following: such as, processes the hair of minimizing amount, or increases the time that heat puts on the arbitrary portion of hair.
It is remembered that, one of them purpose of the present invention is that mouldability is not had a negative impact by protection hair by overheated infringement.In order to reach this purpose, according to an aspect of the present invention, before temperature exceedes acceptable limit, put on the power level of heating element heater by the existence and adjustment detecting abnormal low-load, power control circuit uses temp of heating element information to carry out the generation of the too high condition of predicted temperature.By predicting this condition before condition physical presence, it is possible to little by little regulate power level, thus mouldability being caused less impact.
Have been determined that, when the heat load that above type of general exception is low be applied to heating element heater 13,14 and add hot surface 16a, 17a be heated to 180-250 Celsius spend time, the temperature adding hot surface 16a, 17a declines with the speed lower than most of normally loaded speed characteristic.By measuring the temperature fall off rate of heating element heater 13,14 and by this speed compared with the set rate characteristic of abnormal low thermal load, the control system of the present invention has been advantageously employed this phenomenon.When measured speed is lower than reference rate (representing abnormal low heat load on hair hair iron), the power being sent to heating element heater can be reduced to relatively low level.By this layout, the temperature adding hot surface 16a, 17a is restricted such that to avoid pyrolytic damage that is overheated and that therefore cause.
Being desirable owing to remaining stable for state temperature before use, therefore temperature is maintained within the scope of one.At any time, the temperature fall off rate of heating element heater 13,14 is likely lower than the set rate characteristic of abnormal low thermal load, it is therefore desirable to occur the situation of this low drop-out speed to distinguish with when operation this situation.This can by using activation sensor to reach, and when in the close position this sensor sensing pawl 10,11 is and produces the first activation output.Once the first activation output is received, power control circuit 20 can start to monitor the fall off rate of temperature.
The forming hair instrument according to illustrated embodiment is used to utilize different heating loads to carry out a series of test, to produce to characterize multiple unequally loaded temperature-time curve.This test carries out in the beginning steady state temperature scope of 120-250 degree Celsius, and uses the hair simulation part of heat-conducting metal (aluminum) strips as load.Depending on the size of the bar used, this replicates or imitates the Temperature-time characteristic of volume length of dry hair.Employ the hair simulation part of 4 grams and 2 grams and simulate the hair that length is 200mm of 4 grams and 2 grams.Consider the typical operation cycle, wherein in selected steady state power level, at Guan Bi pawl first to obtain steady state temperature before clamping simulating piece, then in 5 seconds, pull forming hair instrument from one end of simulating piece to the other end, then discharge hair.Transient surface temperature on the simulating piece of 155 degree or higher Celsius is marginal value, exceedes this marginal value and can cause the pyrolytic damage excessively to hair.
Based on obtained curve and analysis, establish the peculiar reference fall off rate for abnormal low heat load.In the embodiment shown, by using the time rate of change between-10 DEG C/s and-8 DEG C/s, it is thus achieved that gratifying styling result.Especially, activate output from first and survey, in the decline that first second is 10 DEG C, or after two seconds, be the decline of 19 DEG C, or be the decline of 27 DEG C when arriving the 3rd second be gratifying, and show less than the fall off rate of these numerals may result in overheated.Reference temperature be selected to allow sufficiently early revise prevent to be declined by minimum power level overheated, and enough evening to avoid unnecessary adjustment.Value for reference rate and reference temperature is empirically determined, thinks the result that the instrument of shown embodiment provides.It is to be understood that this is intended to illustrate the present invention and the unrestricted present invention.
Fig. 3, Fig. 4 a, Fig. 4 b and Fig. 5 shows the temperature (topmost) of heating element heater 13,14, the temperature (centre) of different hair simulation part and is fed to the electric current (foot) of heating element heater 13,14 and distinguishes change over time.The electric current being fed to heating element heater 13,14 is directly proportional to power, owing to voltage is constant, therefore can control power level by control electric current.As it can be seen, when hair iron is not used by, by using steady state power or levels of current to remain stable for state temperature.Although the transient current being fed to element can essentially change element is maintained at steady state temperature, but the time average for given steady state temperature, electric current or power level is constant.Before the procedure, by providing the power control circuit 20 of steady state power output, heating element heater 13,14 is maintained at the setting value of 200 DEG C, wherein exports in this steady state power, and the electric current of about 1 ampere flows through element 13,14 and hair simulation part is in room temperature.When power control circuit 20 operates under thermostatic control pattern, heating element heater 13,14 obtains this temperature.In thermostatic control pattern, control circuit operates at constant temperature power level, and this constant temperature power level is along with temperature deviation or the change of divergence between transient temperature and the design temperature of element, and namely temperature deviation is more high, and power level is more high.Constant temperature power level for given temperature deviation can such as be determined by look-up table or by the calculating performed by power control circuit 20.
Fig. 3 shows the operation under normal heat load, and this heat load includes the hair simulation part of 4 grams.When the 10th second, pawl was clamped on simulating piece, and power control circuit 20 receives the first activation output, starts timer record start temperature.At timer after 1 second, power control circuit 20 read heating element heater transient temperature and by from initial temperature deduct Current Temperatures and by this result divided by elapsed time to estimate the first fall off rate.Subsequently, by compared with the fall off rate of the 10 DEG C predetermined/s of this first fall off rate and the memory body being stored in this circuit.Owing to the fall off rate of measured time is equal to or more than predetermined fall off rate, therefore power control circuit 20 is as responding according to the constant temperature power level determined by power circuit 20 electric current increasing heating element heater 13,14 being directly proportional to the difference between transient temperature and initial temperature.At timer after second second and the 3rd second, by measuring to calculate fall off rate respectively in 2 seconds and in 3 seconds, and in both cases, computed to speed be respectively equal to or more than 9 DEG C/s and 8 DEG C/s.In all cases, after second second and the 3rd second, the computed fall off rate arrived equals to or more than stored predetermined fall off rate, therefore it is absent from normally thermostatically controlled " interference ", and electric current can improve further, and still the final temperature of 4 grams of simulating pieces can be risen to the maximum dropping on below the marginal value of pyrolytic damage.After initiateing 5 seconds, Fig. 3 shows that the maximum temperature of hair occurs in pawl and opens to discharge the eve of hair.When pawl is opened, the second activation output carrying out self-activation sensor 22 sends signal to stop monitoring rate temperature change to power control circuit 20, and the setting according to input equipment 25 simultaneously remains stable for state temperature.
Fig. 4 a and Fig. 4 b shows the feature identical with Fig. 3, but is the simulating piece (compared with Fig. 3, represent the hair volume of the half of normal moulding, and therefore produce abnormal low heat load) for 2 grams.After one second of pawl Guan Bi, power control circuit 20 determines that fall off rate is less than 10 DEG C/s.Correspondingly, being maintained at steady state levels if inputted by the power of heating element heater 13,14, will there is overheated risk.Therefore power control circuit 20 detects abnormal low heat load, and be operated by heating element heater 13,14 and be in the minimizing pattern of power level (being in zero-power level especially, i.e. the power supply of power control circuit 20 cutting member) lower than steady state power level and respond.In the ending from the second of initial calculation second and the 3rd second, calculate fall off rate, and in both cases, computed speed is respectively smaller than 9 DEG C/s and 8 DEG C/s, therefore heating element heater 13,14 is held below the power level of steady state power level by power control circuit 20.
Similarly, when the temperature sensed more than the second calculating temperature (200 DEG C-18 DEG C=182 DEG C) and measured fall off rate less than two seconds after second with reference to 9 DEG C/s of fall off rate time, or work as the temperature that senses when calculating temperature (200 DEG C-24 DEG C=176 DEG C) and measured fall off rate less than the 3rd 8 DEG C/s of reference rate more than the 3rd, if power level is not changed in after first second, then next power control circuit 20 will reduce to zero second second of calculating from activation signal and the power level that is applied to heating element heater on the 3rd second.
Fig. 4 a and Fig. 4 b show the power level operation lower than steady state power level and pawl be opened (occur in two charts time=15s time) after, for controlling two options that the power to element is supplied.Fig. 4 a shows that power control circuit 20 operates under constant temperature power control mode, and increases power according to constant temperature no-load mode according to the temperature deviation between transient temperature (about 164 DEG C) and the design temperature (200 DEG C) of heating element heater or difference.But, as shown in fig. 4 a, after using and opening pawl, it is necessary within 3 or 4 seconds, just can obtain design temperature.Fig. 4 b shows enhancing control model (boostcontrolmode), and it is than the temperature of constant temperature mode raised elements quickly.This enhancement mode can be selected to recover more quickly by power control circuit 20 after power level is lower than the operation of steady state power level.When the operation when power level is lower than steady state power level, this predetermined enhancement mode occurs in the second activation output indicating collet for after opening.According to enhancement mode, for all of temperature deviation, power control circuit 20 operates and provides power with the power level higher than constant temperature mode to element.The peak of the power of element is higher than the peak of constant temperature mode.Such as, compared to 2 amperes in tradition constant temperature mode, power peak can correspond to 3 amperes.As it can be seen, the temperature that result is element is quickly restored to setting level (according to Fig. 4 b, in about 2 seconds).
As shown in table 1, for normal load, power control circuit 20 operates with constant temperature mode, in this operation, it monitors the time fall off rate of component temperature (Tr), as long as and Tr is in corresponding to carrying out self-alignment (bottom) predetermined fall off rate and (top) speed range with reference to the between fall off rate first time activating output, then tradition thermostatic control pattern will not be made change subsequently.When being positioned at below and above these scopes at elapsed time Tr, then power control circuit 20 will respectively to reduce pattern and enhancement mode operation.As it has been described above, in reduction pattern, heating element heater operates at the power level being set below steady state power level for current power.In enhancement mode, heating element heater operates at the power level higher than power level for constant temperature mode.Such as, for the difference measured by identical between instantaneous component temperature and design temperature, in enhancement mode for the power of element can than in constant temperature mode for the high 20%-60% of the power of element.
Table 1: select according to the control model of temperature fall off rate
Power control circuit 20 can also operate with increased wattage so that do not affect mouldability under strengthening response modes in response to abnormal high heat load (it trends towards with faster than the temperature of normal rate reduction element).Fig. 5 shows the so abnormal high heat load on the instrument of the hair simulation part form putting on 6 grams.Such as, the memory body in power control circuit 20 can store the reference fall off rate higher than the first predetermined fall off rate.When measured fall off rate drops between reference fall off rate and the first predetermined fall off rate (such as, after 1 second between 10 DEG C/s and 16 DEG C/s), power control circuit 20 is with thermostatic control Schema control heating element heater 13,14, for instance the increase that the difference between power to measured component temperature and the design temperature corresponding to steady state power level is directly proportional.But, when measured fall off rate more than reference fall off rate (such as, after 1 second more than 16 DEG C/s), control circuit be in higher continuously increased wattage level (higher than limited by traditional thermostatic control pattern those) enhancement mode operation heating element heater, until detect the fall off rate of measured temp of heating element less than reference rate, or heating element heater speed is in the design temperature corresponding to steady state power output.Increase to the fall off rate measured by higher increased wattage level and the temp of heating element that detects subsequently less than reference rate after, power control circuit 20 is progressively decreased the power level being applied to heating element heater, until the power level of this applying is again equal to steady state power level or temperature, or until detects abnormal low thermal load and again occur.When reaching steady state power level or temperature, power control circuit 20 returns to normal thermostatic control pattern.
The many aspects of the present invention only it are illustrated with.It should be appreciated that without departing from the scope of the invention, it is possible to the present invention is made various amendment and supplements.
Claims (10)
1. a forming hair instrument, including:
At least one heating element heater, this heating element heater has and adds hot surface for what contact hair；
Paired pawl, described heating element heater be disposed in described pawl one of them on, described pawl is connected to move between the open and the closed positions；At described open position, it is possible to remove between described pawl or insert hair；In described make position, described hair is added hot surface extruding towards described by another of described pawl；
Temperature sensor, adds the temperature of hot surface described in the vicinity of heating element heater described in this temperature sensor senses；
Activating sensor, when pawl described in this activation sensor sensing is in described make position and produces the first activation output；
Power control circuit, this power control circuit is in response to described activation sensor and described temperature sensor, and operable is in steady state power level thus keeping the temperature at steady statue operating described heating element heater；
Described power control circuit includes the device of the time fall off rate of the temperature for determining described heating element heater, and for monitoring that the time fall off rate of described temperature and described temperature is to detect the device of the abnormal heat load on described heating element heater；
Described power control circuit is operable exports, to activate in response to described first, the detection started abnormal heat load, and is in the power level lower than described steady state power level in response to the abnormal heat load described heating element heater of operation.
2. forming hair instrument according to claim 1, wherein, is zero-power level lower than the described power level of described steady state power level.
3. forming hair instrument according to claim 1 and 2, wherein, time fall off rate for monitoring described temperature and described temperature includes the device for being compared by the time fall off rate of measured temperature with the predetermined fall off rate representing abnormal heat load with the described device detecting abnormal heat load, when measured time fall off rate is less than described predetermined fall off rate, described monitoring arrangement detects abnormal heat load.
4. forming hair instrument according to claim 1 and 2, wherein, the time fall off rate for monitoring described temperature and described temperature includes with the described device detecting abnormal heat load: for the temperature sensed calculating with first temperature, calculating temperature and the device compared lower than the described second the 3rd temperature calculating temperature lower than the second of this first calculating temperature；And by described measured temperature fall off rate and the first predetermined fall off rate, lower than the second predetermined fall off rate of this first predetermined fall off rate and the device that compares lower than the 3rd predetermined fall off rate of described second predetermined fall off rate；When the temperature sensed calculates temperature and measured fall off rate lower than described first predetermined fall off rate more than described first, or when the speed sensed calculates temperature and measured fall off rate less than described second predetermined fall off rate less than described second, or when the temperature sensed calculates temperature and measured fall off rate less than described three predetermined fall off rate less than the described 3rd, described monitoring arrangement detects abnormal heat load.
5. forming hair instrument according to claim 4, wherein, when the speed sensed calculates temperature and measured fall off rate less than described first predetermined fall off rate more than described first, or when the temperature sensed exceedes described second calculating temperature and measured fall off rate less than described second predetermined fall off rate, or the temperature sensed exceedes the described 3rd when calculating temperature and measured fall off rate less than described three predetermined fall off rate, described power control circuit is operable to reduce, with identical amount, the power level being applied to described heating element heater.
6. forming hair instrument according to claim 5, wherein, the device for measuring described temperature fall off rate includes the time set for setting up interval at continuous print fall off rate between measuring；Described time set is set up from the first first, second and third interval activating the time exported and starting to calculate, and the fall off rate measured in the ending of described first, second and third interval compares with described first, second and third predetermined fall off rate respectively.
7. the forming hair instrument according to claim 5 or 6, wherein, described power control circuit stores the reference temperature exported corresponding to described steady state power, and described first, second and third calculating temperature is calculated by following mode: deduct first, second and third predetermined reference value from described reference temperature to limit described first, second and third predetermined fall off rate.
null8. forming hair instrument according to claim 1，Wherein，Described power control circuit operates described heating element heater with constant temperature mode and is in the first power level，This first power level changes as the function of temperature deviation to keep design temperature，Described temperature deviation includes the difference between instantaneous component temperature and described design temperature，And wherein said power control circuit includes the device for being compared by described fall off rate with reference to fall off rate，And when measured fall off rate is more than described reference fall off rate，Described power control circuit is in all temperature deviations with heating element heater described in enhancement mode operation to be all higher than the power level of described first power level，Until the measured fall off rate detecting temp of heating element is in, less than described reference rate or described temp of heating element, the design temperature exported corresponding to described steady state power.
9. forming hair instrument according to claim 8, wherein, when described pawl is in described open position, described activation sensor produces the second activation output, and described power control circuit activates when output exists operable described second, and at described heating element heater after being in lower than the power level operation of described steady state power level, at heating element heater described in enhancement mode operation, until the power level applied is again equal to described steady state power level, or until detects abnormal heat load and again occur.
10. the method for controlling power at forming hair instrument, this forming hair instrument has heating element heater, temperature sensor, paired pawl and activation sensor, the temperature on the adjacent heating element surface of this temperature sensor senses heating element heater, described heating element heater be arranged in described pawl one of them on, described pawl is connected to move between the open and the closed positions, at described open position, can remove between described pawl or insert hair, in described make position, described hair is added hot surface extruding towards described by another of described pawl, when pawl described in described activation sensor sensing is in described make position and produces the first activation output；Said method comprising the steps of:
Operate described heating element heater and be in steady state power level；
When produce first activation output time, termly measure temperature and calculate temperature time fall off rate and by computed to speed compared with set rate, and
When measured temperature fall off rate is less than described set rate, reduce the power level being applied to described heating element heater to avoid by the overheated pyrolytic damage caused.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK13111187.5 | 2013-09-30 | ||
| HK13111187 | 2013-09-30 | ||
| PCT/CN2013/089988 WO2015043094A1 (en) | 2013-09-30 | 2013-12-19 | Hair styling iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105764376A true CN105764376A (en) | 2016-07-13 |
| CN105764376B CN105764376B (en) | 2019-08-16 |
Family
ID=52741917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380081147.1A Active CN105764376B (en) | 2013-09-30 | 2013-12-19 | hair styling iron |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160213117A1 (en) |
| EP (1) | EP3051974B1 (en) |
| CN (1) | CN105764376B (en) |
| WO (1) | WO2015043094A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107467853A (en) * | 2017-09-25 | 2017-12-15 | 深圳市奋达科技股份有限公司 | A kind of sound wave heater of hair straightener |
| CN111405855A (en) * | 2018-02-09 | 2020-07-10 | 皇家飞利浦有限公司 | Hair straightener |
| CN111630467A (en) * | 2017-12-22 | 2020-09-04 | 洁美来有限公司 | Thermal control apparatus and method |
| CN111781972A (en) * | 2020-06-24 | 2020-10-16 | 惠州拓邦电气技术有限公司 | Foot basin, and temperature control method and device of foot basin |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2014349908B2 (en) * | 2013-11-12 | 2019-09-26 | Jemella Limited | Hair styling apparatus |
| WO2017100229A1 (en) | 2015-12-09 | 2017-06-15 | Spectrum Brands, Inc. | Temperature control system and method for hair styling apparatus |
| GB2574008B (en) * | 2018-05-21 | 2022-06-22 | The House Of Curls Ltd | Hair Styling Device |
| GB2597683B (en) * | 2020-07-29 | 2022-11-23 | Dyson Technology Ltd | Hairstyling device |
| GB2615804A (en) * | 2022-02-21 | 2023-08-23 | Dyson Technology Ltd | A haircare appliance |
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- 2013-12-19 WO PCT/CN2013/089988 patent/WO2015043094A1/en active Application Filing
- 2013-12-19 EP EP13894780.9A patent/EP3051974B1/en active Active
- 2013-12-19 US US15/025,929 patent/US20160213117A1/en not_active Abandoned
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| GB2477834A (en) * | 2010-08-31 | 2011-08-17 | Jemella Ltd | Hair styling appliance with heating zones |
| EP2449911A1 (en) * | 2010-11-05 | 2012-05-09 | Seb S.A. | Hairdressing appliance with automatic control |
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| CN111630467A (en) * | 2017-12-22 | 2020-09-04 | 洁美来有限公司 | Thermal control apparatus and method |
| CN111630467B (en) * | 2017-12-22 | 2022-09-23 | 洁美来有限公司 | Thermal control apparatus and method |
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| CN111405855B (en) * | 2018-02-09 | 2021-10-08 | 皇家飞利浦有限公司 | Hair straightener |
| CN111781972A (en) * | 2020-06-24 | 2020-10-16 | 惠州拓邦电气技术有限公司 | Foot basin, and temperature control method and device of foot basin |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3051974A4 (en) | 2017-07-19 |
| EP3051974B1 (en) | 2018-08-29 |
| EP3051974A1 (en) | 2016-08-10 |
| WO2015043094A1 (en) | 2015-04-02 |
| US20160213117A1 (en) | 2016-07-28 |
| CN105764376B (en) | 2019-08-16 |
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