CN2318784Y - Light low-voltage electric heater using with interter and power regulator - Google Patents
Light low-voltage electric heater using with interter and power regulator Download PDFInfo
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- CN2318784Y CN2318784Y CN 97222926 CN97222926U CN2318784Y CN 2318784 Y CN2318784 Y CN 2318784Y CN 97222926 CN97222926 CN 97222926 CN 97222926 U CN97222926 U CN 97222926U CN 2318784 Y CN2318784 Y CN 2318784Y
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Abstract
The utility model relates to a light low-voltage electric heater using an inverter and a power regulator, which belongs to an electric heater. The utility model is composed of an inverter, an electric heating element and a power regulator. The inverter converts the commercial power to a safe voltage with a frequency greater than 10KHz to be supplied to the electric heating element; the power is provide with a stepless regulation. Due to the adoption of the inverter, the power supply voltage is reduced, a heavy iron core transformer is eliminated, the insulating strength of the electric heating element is enhanced, and the weight and the volume of a transforming component are greatly reduced; therefore, the electric heater is lighter and safer. The typical application of the utility model is electric heating medical health-care articles and various electric heaters close to a human body; the utility model creates the technical precondition for renewing the generation of electric heating clothes, electric heating mattress and blankets, infrared physiotherapy instrument and various electric heating appliances.
Description
The utility model relates to various electric heating appliances and inverter.
At present employed electric heater of people such as electric blanket, electric pad, electric heater, electric heating clothes, electric heating beauty care device, electric heating mess tin, infrared physiotherapy instrument, electric heating instrument etc. mostly are directly to use the 220V power-frequency voltage to supply with electric heating element, relatively hold leak electricity, electric shock accidents.Part electric heater adopts iron-core transformer that power-frequency voltage is transformed into safe voltage and supplies with electric heating element, because iron-core transformer occupies suitable volume and weight, the above iron-core transformer of 20W just is difficult to be installed in electric heating element, makes electric heater use, carry very inconvenient.Chinese patent " low-voltage electric heater " (ZL94226592.0) had once proposed to use inverter to reduce the scheme of supply voltage, but did not wherein have the function of regulating power continuously.
The purpose of this utility model is to provide a kind of light safe low-voltage electric heater that uses inverter power supply scalable power to society, with do to the improvement of above technical scheme with replenish.
The utility model proposes following technical scheme: one, convert power frequency supply to power supply, improve electric frequency, dwindle volume and weight five and ten times (60W) of transformer greater than the 10KHZ frequency by the rectifier in the inverter, oscillator.Two, electric heating element is made of the coil of resistance heating material or PTC element, DZR (DS) element, electrothermic film element, lectrothermal alloy wire or lead coiling.Three, adopt pulse-width modulator (pwm modulator) or PWM integrated circuit or rectifier switch or temperature relay or single chip microcomputer adjuster to regulate continuously or sectional-regulated electric heating power output.Four, inverter can connect one or more electric heating elements, and electric heating element can use simultaneously in a plurality of orientation.Five, the switching tube in the inverter internal oscillator can be the integration module that electrostatic induction device (SIT or BSIT) or field effect transistor (MOSFET) or they are made, and utilizes " negative temperature characteristic " of above-mentioned two kinds of switching tubes and the functional reliability that advantages such as " no storage effect characteristic ", " no second breakdown characteristic " improve complete machine.Switching tube also can adopt bipolar transistor (BJT) or gated transistor (IGBT).Six, between inverter and electric heating element or inside can connect temperature relay, temperature surpasses temperature and cuts off circuit in limited time.Seven, in the electric heating element outside fire proofing or far infrared radiation material can be set,, improve fail safe to strengthen the far infrared radiation amount.Eight, oscillator adopts half bridge circuit or full bridge circuit or monofocal circuit or paralleling switch formula circuit or integrated module type circuit.Nine, inverter, heater can connect timer.Ten, the transformer output voltage can be 7V and below the 7V, to adapt to very low voltage operating.11, the input terminal of inverter can be made into the plug shape and the inverter shell is combined into one, and is convenient during use.12, by short-circuit protection circuit is set, circuit overcurrent protection improves the reliability of complete machine.13, electric heating element can be made into various electrothermal article and the medical health care products of pressing close to human body.
Below in conjunction with accompanying drawing 1～accompanying drawing 8 the utility model structure is described.
Accompanying drawing 1 has been showed the utility model basic structure, and each body title is as follows shown in it:
(1) inverter, (2) electric heating element, (3) power governor, (4) input terminal, (5) rectifier, (6) oscillator, (7) transformer, (21) lead, (22) connector.
As shown in Figure 1, inverter (1) electric heating element (2) power governor (3) connects by lead (21) or connector (22), and inverter (1) is by input terminal (4), and rectifier (5), oscillator (6) transformer (7) connect successively.Connect one or more electric heating elements (2) in the circuit.
Power governor (3) is connected the inside of inverter (1) in accompanying drawing 1 (A) and accompanying drawing 1 (B), and power governor (3) is connected the outside of inverter (1) in accompanying drawing 1 (C) and accompanying drawing 1 (D).Power governor (3) in the accompanying drawing 1 (A) is made of pulse-width modulator (pwm modulator) (8), power governor (3) in the accompanying drawing 1 (B) is made of single chip microcomputer adjuster (60) or PWM integrated circuit (61), being pulse-width modulator (8) in the accompanying drawing 1 (C), is rectifier switch (9) or temperature relay (12) in the accompanying drawing 1 (D).
In the said structure: input terminal (4) is used for introducing the power frequency mains supply, and the effect of rectifier (5) and oscillator (6) is to convert the power frequency mains supply to greater than the 10KHZ frequency power supply (hereinafter to be referred as high frequency electric source); The effect of transformer (7) is that high frequency electric source is become safe voltage less than 50V by high voltage; The effect of electric heating element (2) is to convert electric energy to heat; Duty ratio or the duty ratio by regulate mains input voltage or by regulate transformer output voltage or by rectifying tube copped wave realize the adjusting of power output of power governor (3) by regulating the higher-order of oscillation.
Accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, accompanying drawing 8 have been showed the oscillator (6) based on the different circuit of employing of accompanying drawing 1 structure respectively.The oscillator of accompanying drawing 2 (6) is to use the half bridge circuit of bipolar transistor (BJT); The oscillator of accompanying drawing 3 (6) is to use the half bridge circuit of electrostatic induction device (SIT or BSIT); The oscillator of accompanying drawing 4 (6) is to use electrostatic induction device (SIT or BSIT) integrated module type circuit; Accompanying drawing 5 is to use the half bridge circuit of field effect transistor (MOSFET); Accompanying drawing 6 is to use the paralleling switch formula circuit of reverse conduction triode thyristor (RCT); Accompanying drawing 7 is to use the monofocal circuit of gated transistor (IGBT).Accompanying drawing 8 is to use the monofocal circuit of field effect transistor (MOSFET) integration module.Operation principle of the present invention is as follows: introduce power frequency supply from input terminal (4), be transformed into unidirectional pulsafeeder by rectifier (5), process oscillator (6) is transformed into the power supply greater than the 10KHZ frequency, become safe voltage to supply with electric heating element (2) high-voltage variable through transformer (7), electric heating element (2) produces and the width of cloth is penetrated heat.
Below in conjunction with a pair of accompanying drawing two explanations of embodiment, accompanying drawing two is power supply reason exemplary graphs of embodiment one.
Embodiment one: adopt bipolar transistor (BJT) (23) to do switching tube among the embodiment one, oscillator (6) is a half bridge circuit.The electric heating element of embodiment one (2) is coil (24) formation by the lead coiling.The coil axle center is a vertical arrangement, and the coil axle center was vertical with human body surface when soon electric heating element was used as infrared physiotherapy instrument to the treatment of human body do.Electric heating element (2) external device (ED) has far infrared radiation material (16), as far infrared coating or far IR fibre fabric, to strengthen the thermal radiation effect.Here be two coils or a plurality of coil and connect, do multi-faceted synchronous use.Power governor among the embodiment one (3) is to be made of rectifier switch (9), closes or opens K switch 1 and can regulate power.Be provided with timer (18) and temperature relay (12) in the circuit, timer (18) can be mechanical timer (58), electronic timer (59), when timing to or electric heating element (2) temperature when surpassing set point of temperature, the circuit auto-cutout.Timer (18) also can be replaced by the single chip microcomputer adjuster (60) (as single chip microcomputers such as INTEL8031 or MC6805) that is provided with the function of temperature relay (12).
The frequency of oscillation of the inverter of embodiment one (1) is 20KHZ; The magnetic core of transformer (7) is a ferrite core, and model R2K, specification E130, transformer secondary output output voltage are 36V or 24V, 12V; Coil diameter is 5～200mm, and far infrared thermal radiation material (16) radiation wavelength of coil outside is 7～16 microns a far infrared.The inverter weight 0.1kg of embodiment one, power output 60W.
Embodiment one can be applicable to aspects such as infrared physiotherapy instrument, electric blanket, under blanket, electric heating clothes, electric heating shoes.
Below in conjunction with 3 explanations of two pairs of accompanying drawings of embodiment, accompanying drawing 3 is power supply reason exemplary graphs of embodiment two.Embodiment two: adopt electrostatic induction device (SIT or BSIT) (14) to do switching tube among the embodiment two, oscillator (6) is a half bridge circuit.Electric heating element (2) is to be made of lectrothermal alloy wire (26).Lectrothermal alloy wire (26) is sub-thread or strands.Lectrothermal alloy wire among the embodiment two (26) external packets is wrapped with the fire proofing (17) of high temperature resistance, for example gathers fluoroplastics etc.Here be two electric heating elements (2) serial connections.Power governor (3) is made of pulse-width modulator (pwm modulator) (8), and pulse-width modulator (8) is regulated cycle of oscillation and reached the purpose of regulating power output by the break-make of switching tube in the pulsed oscillator (6) of output distinct pulse widths.The power governor of embodiment two (3) also can be made of pulse-width regulated integrated circuit (61) (as IC3524 etc.).Be connected in series temperature relay (12) in the circuit.The transformer of embodiment two (7) is made of alloy magnetic core, elementary winding, secondary winding.
Embodiment two can be applicable to aspects such as infrared physiotherapy instrument, electric iron in electric heater, the body cavity.
Below in conjunction with three pairs of accompanying drawing 4 explanations of embodiment.Accompanying drawing 4 is electric principle exemplary graphs of embodiment three.Embodiment three: adopt electrostatic induction device (SIT or BSIT) integration module (27) to constitute half-bridge oscillators (6) among the embodiment three.The electric heating element of embodiment three (2) is made of PTC element (28).PTC element (28) can be connected in series each other or and connect 40 °～60 ℃ of maintenance steady temperatures.Power governor (3) is made of temperature relay (12), and temperature relay (12) is regulated the transformer output voltage automatically according to the temperature sensor on the electric heating element (52), reaches the purpose of regulating power.Be provided with circuit overcurrent protection (20) among the embodiment three, the terminal voltage when electric current surpasses limit value on the resistance R B promotes transistor GB conducting, and the switching tube grid potential that makes oscillator (6) is zero, and oscillator (6) then quits work.The PTC element of embodiment three also can be replaced by plasticity ptc material (36).
Embodiment three can be applicable to electric heating clothes, electric heating shoes, sexual function treatment instrument, medical apparatus for treating prostatic diseases etc.
Below in conjunction with four pairs of accompanying drawing 5 explanations of embodiment.Accompanying drawing 5 is electric principle exemplary graphs of embodiment four.Embodiment four: implement to have adopted field effect transistor (MOSFET) (15) to do switching tube in four and constituted half-bridge oscillators (6).Wherein electric heating element (2) is made of resistance heating material (25), and resistance heating material (25) is meant the metal of high resistivity or electric energy--the thermal power transfer material that metal oxide, slaine, carbon, rare earth metal or their mutual mixtures constitute.Here electric heating element (2) is attached on yarn fabric (54) or plastics (55) or the pottery (51).Power governor (3) is made of rectifier switch (9); Be provided with short-circuit protection circuit (19) in the embodiment four; this circuit is made up of sampling coil LS1 and switching tube excitation coil LS2; the voltage that LS1 responds to above is coupled in order to pull switch pipe G2 through LS2; keep oscillator (6) work; when transformer (7) output short circuit, LS1 voltage is zero, and LS2 voltage is zero; on-off switching tube then, vibration stops.Power input also has been connected in series negative temperature coefficient thermistor (30) in embodiment four, impulse current when moving to reduce circuit.Embodiment four is applied to infrared physiotherapy instrument, electrically-heating vest, electric heating waistband etc.
Below in conjunction with implementing five pairs of accompanying drawing 6 explanations.Accompanying drawing 6 is electric principle exemplary graphs of embodiment five.Embodiment five: adopt reverse conduction triode thyristor (RCT) (31) to do switching tube among the embodiment five and constitute paralleling switch formula oscillator (6), electric heating element (2) surface apparatus far infrared thermal radiation material (16), as far infrared coated material or far IR fibre braid.Among the embodiment five lead-out terminal (4) is made plug shape (seeing accompanying drawing 6), device has become inverter (2) into one " plug " on inverter shell (13), uses easily.Electric heating element among the embodiment five (2) is made of DZR element (32) or electrothermic film element (33), and DZR element (32) or electrothermic film element (33) can a plurality of series and parallels.The pulse-width modulator of embodiment four is PWM integrated circuit (61), also is switching tube exciting unit (50) simultaneously, regulates cycle of oscillation by the pulse of output different duty, realizes regulating the power output of reverse conduction triode thyristor (31) with this.
Embodiment five is provided with short protective circuit (19), and this electric routing switch pipe GA1, GA2 and electric cloudy R form, and when the output short circuit, the grid voltage of GA1 or GA2 is zero, and GA1 or GA2 are turned off, and output current is ended.PWM integrated circuit (61) is formed circuit overcurrent protection (20) with resistance R 3.
Below in conjunction with 7 explanations of six pairs of accompanying drawings of embodiment, accompanying drawing 7 is electric principle exemplary graphs of embodiment six.The oscillator here (6) is done switching tube by gated transistor (IGBT) (34) and is constituted the monofocal oscillator.Electric heating element (2) is made of lectrothermal alloy wire (26), and profile is banded.Transformer (7) output voltage is 7V and the following voltage of 7V.Embodiment six is provided with temperature relay (12), is serially connected in lectrothermal alloy wire (26) inside, and in its outer setting fire proofing (17).
Below in conjunction with seven pairs of accompanying drawing 8 explanations of embodiment.Accompanying drawing 8 is electric principle exemplary graphs of embodiment seven.Embodiment seven: the switching tube that adopts field effect transistor (MOSFET) integration module (35) to make oscillator (6) among the embodiment 7 constitutes monofocal oscillator (6).Electric heating element (2) is made of the coil (24) of lead coiling, and coil axes edema with the heart involved flat raft is listed as on the braid that is laid in, and constitutes banded electric heating element (2).Coil axes is intracardiac to have installed flexible far infrared radiation material (16) as the coil stem stem, coil diameter 1.5～3mm.Connected timer (18) at power input.The power governor of embodiment seven (3) is pulse-width modulator (8), realizes the adjusting of power output by the adjusting to bidirectional triode thyristor SCR input voltage duty ratio.The pulse-width modulator of embodiment seven (8) can adopt the non-steady-state oscillation circuit of time-base circuit 555 to realize, the pulsewidth of regulating 555 circuit output square wave is the duty ratio of scalable controllable silicon conduction back voltage waveform, thereby has regulated power output.
Explain below in conjunction with eight pairs of accompanying drawings 9 of embodiment.Accompanying drawing 9 is embodiment eight electric principle exemplary graphs.Embodiment eight: embodiment eight constitutes monofocal oscillator (6) by field effect transistor (MOSFET) (16) switching tube; Electric heating element (2) is made ear muff (37), abdomen waistband (40), knuckle guard (42), imitative male genitals (44) by plasticity ptc material (36); Between 40～65 ℃ of electric heating element (2) automatic constant-temperatures; The plasticity ptc material (36) here is meant ptc material extrusion molding made plastic material between two wires.The power governor of embodiment eight (3) is single chip microcomputer adjuster (60), single chip microcomputer adjuster (60) is by the temperature on temperature sensor (52) the detection electric heating element (2), after pressing blas computing judgement, open and close temperature relay (12) contact by the I/O mouth, interrupt or connect the current supply circuit of electric heating element (2), thereby regulate electric thermal power.Here single chip microcomputer adjuster (60) also can doublely be done timer (18) use, cuts off current supply circuit according to pre-specified time control temperature relay (12).Single chip microcomputer adjuster (60) can be two or four or eight or sixteen bit or 32 single chip microcomputers such as INTEL80 series single chip microcomputer, MC68 series single chip microcomputer, MSM64162 or MSM64P164 single chip microcomputer etc.
Explain below in conjunction with nine pairs of accompanying drawings 10 of embodiment.Accompanying drawing 10 is embodiment nine electric principle exemplary graphs.
Embodiment nine: the electric heating element of embodiment nine (2) is made gloves (38), hip band (41), brassiere (43), vest (46), electric heating Cylinder (57) by lectrothermal alloy wire (26).The oscillator of embodiment nine (6) is the monofocal circuit that is made of field effect transistor (MOSFET) integration module (35), and the field effect transistor integration module is the three end PWM Switching Power Supply integrated circuits (56) that adopt PWR-TOP200 or PWR-TOP210 and similar series in embodiment nine.Power governor (3) is regulated the duty ratio of integration module pumping signal by photoelectrical coupler (53), thereby has regulated power output.PWR series IC interior is provided with current limliting and overheat protective function.The power governor (3) of enforcement eight also can adopt single chip microcomputer adjuster (60) to replace.
Explain below in conjunction with ten pairs of accompanying drawings 11 of embodiment, accompanying drawing 11 is electric principle exemplary graphs of embodiment ten.Embodiment ten: embodiment ten makes footmuff (39), arm cover (47), leg cover (48), imitative female sexual organ (45) by resistance heating material (25).Oscillator (6) is the monofocal circuit that is made of gated transistor (IGBT) integration module (49).
The explanation of the accompanying drawing map title:
Accompanying drawing 1: basic block diagram.Accompanying drawing 2: embodiment one electric principle illustration (coil of lead coiling constitutes electric heating element, and bipolar transistor constitutes half-bridge oscillators).Accompanying drawing 3: embodiment two electric principle illustrations (electrostatic induction device constitutes half-bridge oscillators, and the PWM integrated circuit constitutes power governor).Accompanying drawing 4: embodiment three electric principle exemplary graphs (the electrostatic induction device integration module constitutes half-bridge oscillators).Accompanying drawing 5: embodiment four electric principle illustrations (field effect transistor formation half-bridge oscillators).Accompanying drawing 6: embodiment five electric principle illustrations (reverse conduction triode thyristor constitutes paralleling switch formula oscillator).Accompanying drawing 7: embodiment six electric principle illustrations (gated transistor constitutes the monofocal oscillator).Accompanying drawing 8: embodiment seven electric principle illustrations (the field effect transistor integration module constitutes the monofocal oscillator).Accompanying drawing 9: embodiment eight electric principle illustrations (field effect transistor constitutes the monofocal oscillator, and the plasticity ptc material constitutes electric heating element, and the single chip microcomputer adjuster constitutes power governor).Accompanying drawing 10: embodiment nine electric principle exemplary graphs (three end PWM Switching Power Supply integrated circuits constitute the monofocal oscillator).Accompanying drawing 11: embodiment ten electric principle exemplary graphs (the gated transistor integration module constitutes the monofocal oscillator).
Component names is as follows shown in accompanying drawing 1～accompanying drawing 11: (1) inverter; (2) electric heating element; (3) power governor; (4) lead-out terminal; (5) rectifier; (6) oscillator, (7) transformer, (8) pulse-width modulator (pwm modulator); (9) rectifier switch; (12) temperature relay, (13) inverter shell, (14) electrostatic induction device (SIT or BSIT); (15) field effect transistor (MOSFET); (16) far infrared radiation material (17) fire proofing, (18) timer, (19) short-circuit protection circuit; (20) circuit overcurrent protection; (21) lead, (22) connector, (23) bipolar transistor (BJT); (24) coil of lead coiling; (25) resistance heating material, (26) lectrothermal alloy wire, (27) electrostatic induction device (SIT or BSIT) integration module; (28) PTC element; (30) negative temperature coefficient thermistor, (31) reverse conduction triode thyristor (RCT), (32) DZR element; (33) electrothermic film element; (34) gated transistor (IGBT), (35) field effect transistor (MOSFET) integration module ,/(36) plasticity ptc material; (37) ear muff; (38) gloves, (39) footmuff, (40) abdomen waistband; (41) hip band; (42) knuckle guard, (43) brassiere, (44) imitate the male genitals; (45) imitative female sexual organ; (46) vest, (47) arm cover, (48) leg cover; (49) gated transistor (IGBT) integration module; (50) switching tube exciting unit, (51) pottery, (52) temperature sensor; (53) photoelectrical coupler; (54) yarn fabric, (55) plastics, (56) three end PWM Switching Power Supply integrated circuits; (57) electric heating Cylinder; (58) mechanical timer (59) electronic timer, (60) single chip microcomputer adjuster, (61) PWM integrated circuit.
Claims (10)
1, uses the hot device of portable low-voltage of inverter scalable power, it is characterized in that: constitute by inverter (1), electric heating element (2), power governor (3), connect by lead or connector therebetween; Inverter (1) back connects one or more electric heating elements (2), can in parallel or series connection between the electric heating element (2); It is the power supply supply electric heating element (2) of safe voltage greater than 10KHZ, voltage that inverter (1) converts mains supply to frequency, and electric heating element (2) converts electric energy to heat, and power governor (3) is used for regulating power output;
Inverter (1) is connected to form successively by input terminal (4), rectifier (5), oscillator (6), transformer (7), wherein oscillator (6) is made of half bridge circuit or full bridge circuit or monofocal circuit or paralleling switch formula circuit or integrated module type circuit, transformer (5) is made of ferrite core, elementary winding, secondary winding, also available alloy material replaces ferrite core, and input terminal (4) is made of metal;
Electric heating element (2) is meant the conductive heating unit that is made of the electric heating transition material;
Power governor (3) is meant and is arranged on inner or outside pulse-width modulator (pwm modulator) (8) or PWM integrated circuit (61) or single chip microcomputer adjuster (60) or temperature relay (12) or the rectifier switch (9) of inverter (1).
2, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: input terminal (4) can be made into the plug shape and inverter shell (13) is combined into one.
3, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: the switching tube in the oscillator (6) can be electrostatic induction device (SIT or BSIT) (14) or its integration module of making.
4, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: the switching tube in the oscillator (6) can be field effect transistor (MOSFET) (15) or its integration module of making.
5, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: far infrared radiation material (16) or fire proofing (17) can be installed in electric heating element (2) outside.
6, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: electric heating element (2) can be made of lectrothermal alloy wire (26).
7, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: electric heating element (2) can be made of PTC element (28) or plasticity ptc material (36).
8, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: inverter (1), electric heating element (2) can be connected with timer (18).
9, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: inverter (1) is inside and outside can be provided with short-circuit protection circuit (19) or circuit overcurrent protection (20).
10, the hot device of portable low-voltage of use inverter scalable power as claimed in claim 1 is characterized in that: electric heating element (2) can be made into electrically-heated suit (62), Electrothermic trousers (63) or electric heating shoes (64), under blanket (65), electric blanket (66), electric heating Cylinder (57); Or make ear muff (37), gloves (38), footmuff (39), abdomen waistband (40), hip band (41), knuckle guard (42), brassiere (43), imitative male genitals (44), imitative female sexual organ (45), vest (46), arm cover (47), leg cover (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222926 CN2318784Y (en) | 1996-05-20 | 1997-05-20 | Light low-voltage electric heater using with interter and power regulator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96211595 | 1996-05-20 | ||
| CN96211595.9 | 1996-05-20 | ||
| CN 97222926 CN2318784Y (en) | 1996-05-20 | 1997-05-20 | Light low-voltage electric heater using with interter and power regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2318784Y true CN2318784Y (en) | 1999-05-12 |
Family
ID=34065730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97222926 Expired - Fee Related CN2318784Y (en) | 1996-05-20 | 1997-05-20 | Light low-voltage electric heater using with interter and power regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2318784Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995556A (en) * | 2014-05-30 | 2014-08-20 | 深圳市伟佰利科技有限公司 | Thermal load with power capable of being continuously adjusted and method |
| CN107196495A (en) * | 2017-06-12 | 2017-09-22 | 万家乐热能科技有限公司 | Power supply circuit, method of supplying power to and its gas water-heating furnace of flame ion detection |
-
1997
- 1997-05-20 CN CN 97222926 patent/CN2318784Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995556A (en) * | 2014-05-30 | 2014-08-20 | 深圳市伟佰利科技有限公司 | Thermal load with power capable of being continuously adjusted and method |
| CN103995556B (en) * | 2014-05-30 | 2016-01-20 | 深圳市伟佰利科技有限公司 | A kind of can the heat load of regulating power and method continuously |
| CN107196495A (en) * | 2017-06-12 | 2017-09-22 | 万家乐热能科技有限公司 | Power supply circuit, method of supplying power to and its gas water-heating furnace of flame ion detection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |