CN1078061C - Treatment device for hair - Google Patents

Treatment device for hair Download PDF

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Publication number
CN1078061C
CN1078061C CN 95118408 CN95118408A CN1078061C CN 1078061 C CN1078061 C CN 1078061C CN 95118408 CN95118408 CN 95118408 CN 95118408 A CN95118408 A CN 95118408A CN 1078061 C CN1078061 C CN 1078061C
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CN
China
Prior art keywords
switch
heating element
diode
motor
treatment device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 95118408
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Chinese (zh)
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CN1128121A (en
Inventor
骆镇贤
梁添源
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JIANFU INDUSTRY Co Ltd
Kenford Industrial Co Ltd
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JIANFU INDUSTRY Co Ltd
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Publication date
Application filed by JIANFU INDUSTRY Co Ltd filed Critical JIANFU INDUSTRY Co Ltd
Publication of CN1128121A publication Critical patent/CN1128121A/en
Application granted granted Critical
Publication of CN1078061C publication Critical patent/CN1078061C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A45D20/30—Electric circuitry specially adapted for hair drying devices

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  • Cleaning And Drying Hair (AREA)

Abstract

The present invention relates to a hair handling device which comprises a cabinet with a wind pipe, a direct current motor, a fan or propeller driven by the motor, a plurality of electrothermal elements arranged in the wind pipe, and a working circuit for controlling the motor and the electrothermal elements, wherein the circuit comprises a first electric switch, a second electric switch, a diode rectifier and a series circuit of a diode and a resistor, wherein the first electric switch is used for selecting the working voltage for the hair handling device between at least two kinds of power supply voltage; the second electric switch is used for selecting the rated power for the electrothermal elements; the diode rectifier is connected with the motor for the motor to work at direct current; the series circuit of the diode and the resistor is controlled by the second electric switch to run in a cold state.

Description

Hair treatment device
The present invention relates to a kind of hand-held hair treatment device, it can select operating voltage with switch at least two kinds of different AC power supplies voltages, and can be in the work of hot and cold (room temperature) attitude.
GB2,181,311A discloses a kind of electric heater unit, can select under two kinds of electric source modes, and can make the wind that blows out that two kinds of temperature models are arranged.
The purpose of this invention is to provide a kind of hair treatment device, can more stably work, and have at least two kinds of working temperatures or power level at least two kinds of voltages.
According to the present invention, a kind of hair treatment device is provided, it comprises: one has the casing of airduct; One direct current motor and by this motor-driven fan or screw passes through airduct in order to drive air; A plurality of heating elements are positioned at airduct; A circuit that in casing, is provided with, in order to control operation motor and heating element, this circuit comprises: one first electric switch, be used between at least two kinds of supply voltage values, selecting the operating voltage of hair treatment device, by rearranging the connection of at least one element in all heating elements, to keep the rated power of electrical heating elements, make it irrelevant with selected operating voltage; One second electric switch is used for the rated functional of selection heating element between the hot and cold attitude at least; A diode rectifier that is connected with motor is used to make motor to move under direct current; A diode-resistance series circuit, it can be switched to cold operation by second electric switch, in order to provide two-by-twice electric current to motor and heating element, wherein, first electric switch connects in the following manner: it can be connected between first on off state and second switch state, for the former, all heating elements in fact all are cascaded, for the latter, at least one of heating element is in parallel with the heating element that other still are cascaded, diode rectifier is made up of two diodes, these two diodes respectively with motor parallel to realize the full-wave rectification effect, circuit has two power supply terminals, first electric switch has 4 switch contacts, first and second switch contacts are connected after a described power supply terminal, and third and fourth switch contacts is connected with the two ends of above-mentioned at least one heating element opposed polarity respectively.
Diode rectifier preferably makes its diode cathode be connected to form a circuit node with motor one terminal, and the negative pole end of diode resistance series circuit is connected with described circuit node.
-in a preferred embodiment, the resistance value of diode-resistance series circuit is more many greatly than the resistance of heating element.
Each diode of diode rectifier is preferably in motor parallel and connects with a corresponding described heating element before.
This first electric switch is a single switching mechanism preferably.
The resistance of described at least one heating element is preferably identical substantially with other heating element resistance sums.
More particularly, first electric switch is suitable for making its first and second switch contacts at the first on off state short circuit, and at the second switch state, then makes its first and second switch contacts respectively to the third and fourth switch contacts short circuit.
Preferably allow all heating elements in fact be cascaded.
Favourable mode is to make hair treatment device can connect the hot pattern of the different shelves with two of cold conditions by means of second electric switch.
Advantage of the present invention is, no matter in what a kind of pattern work, its performance is not subjected to the influence of power source change and more stable.
To with reference to accompanying drawing the present invention be described in more detail only by the mode of example below, accompanying drawing is the circuit diagram according to the embodiment of a kind of hair treatment device of the present invention.
Referring to accompanying drawing, be depicted as the circuit of implementing a kind of hair dryers of the present invention, this hair dryers comprises the casing of airduct (not shown) in it, a direct current motor M and driven in order to drive the fan (not shown) of air by this airduct by this motor M.This hair dryers also comprises 4 heating element R that are arranged in the airduct 1To R 4When operation, motor M energising drive fan or screw etc. form the analog of a blowing device, promote air through being in the heating element R in the airduct 1To R 4, thereby the hot-air of dry hair is provided.This circuit design becomes can control motor M and electric heating element R 1To R 4Operation, and this circuit also comprises the first and second electric switch SW 1To SW 2, 4 diode D 1To D 4, a resistance R 5With a constant temperature switch T.
Motor M has a pair of choking-winding L 1And L 2, be connected with the two-terminal of armature, form motor circuit jointly.A filter capacitor C is in parallel with motor circuit.Heating element R 3And R 4And diode D 2And D 3Become bridge connection around motor M, the motor circuit diagonal angle is connected across between circuit node A and another circuit node K, and circuit node A is formed on diode D 2And D 3Negative pole between, and circuit node K is formed on electric heating element R 3And R 4Between.Be noted that diode D 2And D 3In parallel with motor M respectively to realize the full-wave rectification effect.For making direct current machine operation, diode D 2And D 3Constitute a diode rectifier, flow through motor M with the electric current of the half cycle that alternately makes the AC power opposed polarity by equidirectional, and capacitor C keeps current of electric stable as much as possible by going current pulsation from node A to K.
Heating element R 1And R 2Be connected in series on the node Q, node Q is at heating element R 3With diode D 2Between form.Therefore, as shown in, heating element R 1To R 4Be actually and be cascaded.Thermostatic switch is connected to heating element R 1Far-end.Resistance R 5With diode D 4Link together, form a series connection circuit, its negative pole links to each other with node A.
Hair dryers passes through switch SW 1Adjustment, both can be connected on 230V/50Hz, also can be connected on the power supply of 120V/60Hz and move.Voltage switch SW 1Be a single switching mechanism, it comprises four permanent joint T 1To T 4, can be at first on off state (joint T 1-T 2) and second switch state (joint T 1-T 3/ T 2-T 4) between switch, first state is used for the 230V/50Hz operation, by a movable bridge contact (being represented by dotted lines) joint T 1And T 2Short circuit, second switch state are used for 120V/60Hz operation, by movable bridge contact (being represented by dotted lines) respectively with joint T 1And T 3And T 2And T 4Short circuit.Joint T 3With heating element T 2Adjacent to heating element R 1An end be connected and joint T 4With heating element R 1The other end adjacent to thermostatic switch T is connected.Joint T 2J joins with circuit node, and node J is at heating element R 4With diode D 3Between form.
Hair dryers is designed to the operation of three kinds of different working temperatures or electrical power level, is respectively cold, height and low state, can use switch SW 2Select.Temperature switch SW 2Three selection joint T are arranged 1＇ to T 3＇ and a public joint T 4＇.Joint T 1＇ and resistance R 5Free end connect.Joint T 2＇ and T 3The two receives switch SW ＇ 1Joint T 1On, T 2＇ directly connects, and T 3＇ is through diode D 1Connect indirectly.Select termination T 1＇, T 2＇ or T 3＇ is connected to termination T 4＇ has determined cold, high or low attitude working method respectively.Supply voltage is to be connected across public terminal T 4＇ and thermostatic switch T apply, and the effect of the two is equivalent to two power ends of circuit.
At first referring to the working condition of 230V/50Hz.In the high state pattern, source current, when positive half cycle, sequential flow is crossed electric heating element R 1, R 2, R 3(and through diode D 2Enter motor M) and R 4, and cross heating element R in the negative half period sequential flow 4(and through diode D 3Enter motor M), R 3, R 2And R 1In the low state pattern, the positive half cycle of source current is by diode D 1End, thus electric heating element R 1To R 4Rated power reduced approximately half (reducing to 150 watts) from 300 watts, temperature also reduces by half.Diode D 1Can oppositely connect, with the source current of blocking-up negative half period.
Should be noted that in high and low state two-mode heating element R 1To R 4In fact all be cascaded.In cold conditions, have only the source current of negative half period can flow through diode D 4This source current can not pass through diode D 2And D 3, but can pass through motor M, and order is by heating element R 3, R 2And R 1Because resistance R 5Resistance value ratio electric heating element R 1To R 3Much bigger, the source current amount that can pass through is very limited, and makes heating element R 1To R 3Heat effect be very restricted (60 watts).
Below referring to the situation of 120V/60Hz.In the high state pattern, the circulation path of source current negative half period current component I 1And I 2Expression.Current component I 1Only flow through heating element R 1, and current component I 2Sequential flow is crossed heating element R 2, R 3(and through diode D 2Flow through motor M) and R 4The circulation path direction of the positive half cycle of source current is opposite, is reverse current component I 2Sequential flow is crossed heating element R 4(and through diode D 3Flow through motor M), R 3And R 2
Heating element R 1Resistance approximately and heating element R 2, R 3And R 4The summation of resistance identical.Should note heating element R 2To R 4In fact still be cascaded, and heating element R 1In fact but in parallel with them.This heating element R 1With other heating elements R 2To R 4Actual parallel connection makes all heating element R 1To R 4Total resistance reduced approximately half.Along with supply voltage is reduced to only about half of 120V from 230V, the source current amount is compared practically identical with the ruuning situation of 230V/50Hz, thus heating element R 1To R 4Rated power still is approximately 300W.Therefore, at least in the high state pattern, in fact the performance of hair dryers is not subjected to the influence of the supply voltage that changes between 230V/50Hz and 120V/60Hz.
As the situation in the 230V/50Hz operation, when low state pattern 120V/60Hz operated, the positive half cycle of source current was by diode D 1End, so heating element R 1To R 4Rated power reduce to approximately half (from 300W to 150W), thereby temperature also reduces by half.Therefore, the performance of hair dryers in fact also is not subjected to the influence of mains voltage variations in the low state pattern.When cold conditions, supply voltage does not influence operation from the variation of 230V to 120V at all, and this is because electric heater R 1Reality to connect influence more little.But, make an appointment with half because supply voltage has reduced, heating element R 1To R 4Rated power also will reduce half and be about 30 watts.
Should be noted that and heating element R 1To R 4Compare, motor M is only drawn very little electric current, thereby its existence does not influence the analysis to source current that above provides substantially.When supply voltage when 230V fades to 120V, no matter at high state or low state, R 3, R 4Electric current remain unchanged substantially, same, current of electric is also constant.Therefore, the speed of motor M keeps identical substantially.Have only as heating element R 1To R 4Do the time spent in an air heat, motor speed is only critical, because it influences air velocity, thus the temperature of the hot-air of influence output.Therefore, in cold conditions, motor speed is so unimportant relatively.
Though diode only allows the electric current one-way flow, whole associated diodes group can reconnect by opposite direction and not influence interlock circuit total running in ac operation.Therefore, in a slightly different embodiment, diode D 2, D 3And D 4All connect, promptly allow diode D by rightabout 2And D 3Positive pole and diode D 4Positive pole connect, form circuit node A, A leads to a terminal of motor M again, and this does not influence the total operation of above-mentioned hair dryer machine circuit.
It is contemplated that hair treatment device of the present invention can take to be different from other form of hair dryers, for example curler, hair fixing device or air brush.
The present invention only gives out in the mode of example, and those skilled in the art can to described embodiment make various improvement and/or change and do not exceed as claims the special scope of the present invention that limits.

Claims (11)

1, a kind of hair treatment device, comprise: a casing that has airduct, one drives air by the direct current machine of this airduct with by this motor-driven fan or screw, be arranged on a plurality of heating elements in the described airduct, and one be arranged on being used in the described casing and control the circuit of described motor and the operation of described heating element, this circuit comprises: one first electric switch, be used between at least two kinds of supply voltage values, selecting the operating voltage of described hair treatment device, this first switch is kept the rated power of heating element by the connected mode of rearranging at least one element in all heating elements, makes it irrelevant with selected operating voltage; One second electric switch is used between hot at least and cold conditions pattern selecting the rated power of heating element; A diode rectifier that links to each other with described motor is used for making described motor DC work; And a diode-resistance series circuit, this circuit can be connected with at the cold conditions mode operation by described second electric switch, is used for making restricted electric current flow through described motor and heating element,
It is characterized in that, the connected mode of described first electric switch is: this switch can be changed between first on off state and second switch state, all described heating elements are actually and are cascaded in first on off state, in the second switch state, it is in parallel with other heating elements that still is cascaded that at least one described heating element is actually, described diode rectifier is by constituting with two diodes of described motor parallel respectively, to realize full-wave rectification, described circuit has two power supply terminals, and described first electric switch has four switch contacts, these switch first and second joints are connected on after the described power supply terminal, and third and fourth switch contacts is connected with the two ends of described at least one heating element respectively.
2, a kind of hair treatment device as claimed in claim 1, it is characterized in that, the diode cathode of described diode rectifier links to each other with a motor terminal forming a circuit node, and the negative pole end of described diode-resistance series circuit is connected with this circuit node.
3, a kind of hair treatment device as claimed in claim 1, it is characterized in that, the diode cathode of described diode rectifier is connected with described motor one end, form a circuit node, and the positive terminal of described diode-resistance series circuit is connected with described circuit node.
4, a kind of hair treatment device as claimed in claim 1 is characterized in that, the resistance of described diode-resistance series circuit is more much bigger than the resistance of described heating element.
5, a kind of hair treatment device as claimed in claim 1 is characterized in that, in the described diode rectifier each diode with motor parallel before connect with a corresponding described heating element.
6, a kind of hair treatment device as claimed in claim 1 is characterized in that, described first electric switch is a single switching mechanism.
7, a kind of hair treatment device as claimed in claim 1 is characterized in that, the resistance of described at least one heating element is basic identical with the resistance summation of other heating elements.
8, a kind of hair treatment device as claimed in claim 1, it is characterized in that, described first electric switch is suitable for making its first and second switch contacts short circuit together when described first on off state, when described second switch state, make its first and second switch contacts respectively with the third and fourth switch contacts short circuit.
9, a kind of hair treatment device as claimed in claim 1 is characterized in that, all heating elements are actually and are cascaded.
10, a kind of hair treatment device as claimed in claim 1 is characterized in that, this device can be changed between the hot mode of operation of cold conditions and two kinds of different brackets with described second electric switch.
11, a kind of hair treatment device as claimed in claim 1 is characterized in that, this device is a kind of hair dryers.
CN 95118408 1994-09-15 1995-09-15 Treatment device for hair Expired - Fee Related CN1078061C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9418604A GB2293098B (en) 1994-09-15 1994-09-15 Hair treatment device
GB9418604.6 1994-09-15

Publications (2)

Publication Number Publication Date
CN1128121A CN1128121A (en) 1996-08-07
CN1078061C true CN1078061C (en) 2002-01-23

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Application Number Title Priority Date Filing Date
CN 95118408 Expired - Fee Related CN1078061C (en) 1994-09-15 1995-09-15 Treatment device for hair

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CN (1) CN1078061C (en)
DE (1) DE19534105A1 (en)
GB (1) GB2293098B (en)
HK (1) HK1010319A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632029A1 (en) * 1996-08-08 1998-02-12 Braun Ag Electrical circuit for the power supply
US7153286B2 (en) 2002-05-24 2006-12-26 Baxter International Inc. Automated dialysis system
DE202004011651U1 (en) * 2004-07-24 2005-12-29 Wik Far East Ltd. Supply voltage connectable travel hair care device for use as travel hair dryer, has thermostat switch, and power limiter that is activated in motor circuit for limiting current supplied to electric motor during overload situation
US8027572B2 (en) 2008-02-22 2011-09-27 Baxter International Inc. Dialysis machine having multiple line voltage heater
DE102010053973A1 (en) 2010-12-09 2012-06-14 Fresenius Medical Care Deutschland Gmbh Medical device with a heater
TWI609569B (en) * 2016-10-12 2017-12-21 建準電機工業股份有限公司 Hairdryers and fan rotation speed control modules thereof
CN114711527B (en) * 2022-03-10 2024-05-14 宁波鼎高电器科技有限公司 Self-switching state blower integrated circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711988A (en) * 1985-10-01 1987-12-08 Windmere Corporation Electric hair dryer with multi-mode switch for air temperature and flowrate control
GB2181311B (en) * 1985-10-02 1989-09-27 Sanyo Electric Co Electric heating apparatus

Also Published As

Publication number Publication date
GB2293098A (en) 1996-03-20
GB9418604D0 (en) 1994-11-02
CN1128121A (en) 1996-08-07
HK1010319A1 (en) 1999-06-17
GB2293098B (en) 1998-10-07
DE19534105A1 (en) 1996-03-21

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