CN1987233B - Air conditioner capable of controlling power source and its operation method - Google Patents
Air conditioner capable of controlling power source and its operation method Download PDFInfo
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- CN1987233B CN1987233B CN2005101225319A CN200510122531A CN1987233B CN 1987233 B CN1987233 B CN 1987233B CN 2005101225319 A CN2005101225319 A CN 2005101225319A CN 200510122531 A CN200510122531 A CN 200510122531A CN 1987233 B CN1987233 B CN 1987233B
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Abstract
An air conditioner with controllable power supply is composed of an indoor set, an outdoor set, a transformer for transforming input voltage to low voltage, a low-voltage unit driven by the low voltage output by transformer, and a power supply controller for controlling the input voltage of transformer when the feedback current of primary winding in transformer is raised up. Its control method includes such steps as detecting if said feedback current is raised up, and cutting off the input of transformer if it is.
Description
Technical field
The present invention relates to a kind of air-conditioner and method of operating thereof of carrying out power supply unit control.
Background technology
As shown in Figure 1, the structure of general air-conditioner is made of indoor set 10 and off-premises station 20, includes in the above-mentioned indoor set 10: make room air and refrigerant carry out the indoor heat exchanger 12 of heat exchange; Be used to blow the indoor blower 14 of the room air of above-mentioned heat exchange.And, include in the above-mentioned off-premises station 20: make off-premises station air and refrigerant carry out the outdoor heat exchanger 22 of heat exchange; Be used to blow the outdoor draft fan 24 of the outdoor air of above-mentioned heat exchange; The compressor 26 that is used for compression refrigerant.
As shown in Figure 2, include in the power supply unit of the air-conditioner of prior art: power end 1; Be used to control the control end 2 of the power supply that above-mentioned power end 1 supplies with; Receive the feedback end 3 of feedback current from above-mentioned control end 2; The low-voltage end 4 that output voltage by above-mentioned control end 2 drives.
Wherein, include in the above-mentioned power end 1 receive alternating voltage after, with the go forward side by side bridge diode (bridge diode) (not shown) of line output of its rectification.
Above-mentioned bridge diode is a DC voltage with the alternating voltage full-wave rectification, and exports the voltage that above-mentioned control end 2 is driven.
After above-mentioned control end 2 obtains power supply from above-mentioned power end 1, be converted into low-voltage and output to above-mentioned low-voltage end 4, at this moment, by above-mentioned feedback end 3 to above-mentioned low-voltage end 4 turn-on current.
Above-mentioned control end 2 includes: be used for the supply power of above-mentioned power end 1 is converted to the transformer (T1) that low-voltage is exported; When connecting the feedback current of above-mentioned feedback end 3, carry out switch driven IC (SW).
Above-mentioned transformer (T1) is converted to low-voltage and output with the supply power of above-mentioned power end 1, thereby above-mentioned low-voltage end 4 is driven by above-mentioned low-voltage.
When the reference current value that the feedback current of supplying with when above-mentioned feedback end 3 is set than benchmark rose, above-mentioned switch I C (SW) disconnected switch, thereby the supply power of above-mentioned power end 1 is controlled.
Above-mentioned feedback end 3 inserts the electric current of supplying with to above-mentioned low-voltage end 4 from above-mentioned control end 2 feedbacks, and above-mentioned feedback current is switched among the above-mentioned switch I C (SW) of above-mentioned control end 2, thereby makes above-mentioned switch I C (SW) carry out switching manipulation.
4 low-voltages of supplying with by above-mentioned control end 2 of above-mentioned low-voltage end drive.
But, in the power supply unit of the air-conditioner of above-mentioned prior art, when the input power supply of supplying with to above-mentioned transformer (T1) rises, also will rise to the low-voltage of above-mentioned low-voltage end 4 outputs, and electric current is risen immediately.
When above-mentioned feedback current rises, above-mentioned switch is operated and the sever supply power supply, but, owing to above-mentioned switch slows down its switching manipulation speed from driving after 2 times of transformer (T1) ends obtain feedback current, and, the circuit structure that is used to insert feedback current is comparatively complicated, and manufacturing cost is risen.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that existing technology exists, and a kind of air-conditioner and method of operating thereof of carrying out power supply unit control is provided, and it can reduce the phenomenon that parts are damaged.
The air-conditioner that the present invention can carry out power supply unit control is:
A kind of air-conditioner that carries out power supply unit control comprises indoor set and off-premises station; It is characterized in that, also comprise: transformer is used for that input voltage is converted to low-voltage and exports; Low-voltage end, the low-voltage of exporting by above-mentioned transformer drives; Power control part, when the feedback current of 1 end of above-mentioned transformer rose, the input voltage that it will control above-mentioned transformer rose to prevent output voltage.
The aforesaid air-conditioner that carries out power supply unit control, wherein power control part inserts the feedback current of the power supply correspondence of supplying with to 1 end of above-mentioned transformer, to rise to a reference value at above-mentioned feedback current when above, the power supply that the above-mentioned transformer of subtend is supplied with is controlled.
The aforesaid air-conditioner that carries out power supply unit control wherein includes in the power control part: the feedback power supply unit, and when 1 end feedback current of above-mentioned transformer rises, its out-put supply will rise; Switch, when when above-mentioned feedback power supply unit is supplied with the out-put supply that rises, it will carry out opening operation.
The aforesaid air-conditioner that carries out power supply unit control, wherein feed back in the power supply unit and include: clamp circuit is used for removing the noise that feedback current comprises; Switching power circuit, when connecting the electric current of removal noise from said clamping circuit, it will make above-mentioned switch drive.
The aforesaid air-conditioner that carries out power supply unit control, wherein include in the clamp circuit: resistance is used to remove noise voltage; Diode is used for the voltage of above-mentioned removal noise is carried out clamper; Capacitor when producing heat in the switching manipulation of above-mentioned switch, is used for temperature-compensating.
The aforesaid air-conditioner that carries out power supply unit control, wherein include in the switching power circuit: soft unlatching capacitor, it charges to the rectifier power source of connecting in the above-mentioned switch, makes 2 terminal voltages at above-mentioned transformer rise to a reference value when above, and it will cut off above-mentioned switch; Cut off resistance, it compares the electric current supplied with in the said clamping circuit and the discharge power supply of above-mentioned soft unlatching capacitor, and inserts the electric current that is used to control above-mentioned switch.
The aforesaid air-conditioner that carries out power supply unit control wherein includes in the switch and connects IC.
The aforesaid air-conditioner that carries out power supply unit control wherein connects among the IC and includes: drain electrode, and it is connected with above-mentioned rectifier terminal and inserts rectifier power source; Control pin (control pin), it is connected with the cut-out resistance of above-mentioned switching power circuit, and inserts the required electric current of switching manipulation; Source electrode, it is connected with the soft unlatching capacitor of above-mentioned switching power circuit, and the power supply that the above-mentioned drain electrode of subtend is supplied with charges.
The method of operating that the present invention can carry out the air-conditioner of power supply unit control is:
A kind of method of operating of carrying out the air-conditioner of power supply unit control is characterized in that, comprises following step: the 1st step, and whether the rising of 1 end feedback current of detection transformer to be; The 2nd step when above-mentioned detected feedback current rises to a reference value when above, is cut off the power supply of supplying with to above-mentioned transformer.
Aforesaid method of operating of carrying out the air-conditioner of power supply unit control wherein also includes:
The 3rd step, in above-mentioned the 2nd step, cut off the electricity supply supply with after, when detected feedback current is a reference value when following, will recover power supply once more and supply with.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic perspective view of general air-conditioner;
Fig. 2 is the circuit diagram of power supply unit structure of the air-conditioner of prior art;
Fig. 3 is the block diagram of the structure of the present invention's air-conditioner that can carry out power supply unit control;
Fig. 4 is the transformer of the present invention's air-conditioner that can carry out power supply unit control and the circuit diagram of power control part;
Fig. 5 is the flow chart of the driving method of the present invention's air-conditioner that can carry out power supply unit control;
Fig. 6 is a detected oscillogram in the transformer of the present invention's air-conditioner that can carry out power supply unit control.
The number in the figure explanation:
10: indoor set 12: indoor heat exchanger
14: indoor blower 20: off-premises station
22: outdoor heat exchanger 24: outdoor draft fan
26: compressor 40: power end
50: power control part 51: switch
52: feedback power supply unit 52a: clamp circuit
52b: switching power circuit 60: transformer
70: low-voltage end C1: capacitor
C2: soft unlatching capacitor (soft start capacitor) C3: temperature-compensating capacitor
R1: cut off resistance R 2: denoising resistance
D1: clamp diode (clamp diode)
The specific embodiment
As shown in Figure 1, the air-conditioner that can carry out power supply unit control is the power supply unit that comprises in the internal circuit about off-premises station 20.
As shown in Figures 3 and 4, the air-conditioner of the carried out power supply unit control among the present invention comprises: power end 40, and the AC power that is used for importing is converted to dc source and exports; Power control part 50 is used to insert the output of above-mentioned power end 40; Transformer 60, it will be imported power supply and supply to above-mentioned power end 40, and it is transformed to low-voltage will export; Low-voltage end 70 is connected with the output of above-mentioned transformer 60.
Wherein, include bridge rectifier (not shown) in the above-mentioned power end 40, this bridge rectifier is transformed to dc source with AC power and exports to above-mentioned power control part 50.
The output voltage that above-mentioned power control part 50 is received above-mentioned power end 40 drives, and to 1 time of above-mentioned transformer 60 end supply power.
Comprise in the above-mentioned power control part 50: switch 51, it is connected and is used to control power supply with above-mentioned power end 40 and supplies with; Feedback power supply unit 52, it is gone into feedback current and above-mentioned switch 51 is driven from 1 termination of above-mentioned transformer 60.
Include the connection IC (T10) that carries out switching manipulation in the above-mentioned switch 51.
Above-mentioned connection IC (T10) is by being connected and supplying to the drain electrode (Drain) of power supply with above-mentioned power end 40; Insert the colelctor electrode (Collector) of Switching Power Supply from above-mentioned feedback power supply unit 52; Source electrode (Source) from the input power supply of above-mentioned power end 40 to 1 end of above-mentioned transformer 60 that supply with connects.
Above-mentioned connection IC (T10) is connected with colelctor electrode with drain electrode in the early stage, makes the input power supply with above-mentioned power end 40 be linked into the feedback power supply unit 52 that is connected with above-mentioned colelctor electrode, and it is sent in the above-mentioned transformer 60.
Above-mentioned feedback power supply unit 52 is connected and supply power with 1 end of above-mentioned transformer 60, and the feedback current that inserts above-mentioned service voltage correspondence in the above-mentioned switch 51 is driven.
Include in the above-mentioned feedback power supply unit 52: clamp circuit 52a, it is used for removing the noise that above-mentioned feedback current comprises; Switching power circuit 52b, it inserts the electric current of removing noise and above-mentioned switch is driven from said clamping circuit 52a.
Include among the said clamping circuit 52a: the resistance (R12) that is used to remove noise voltage; The above-mentioned voltage that removes denoising is carried out the clamp diode (D11) of clamper; The capacitor (C13) that the heat that produces for the switching manipulation of above-mentioned switch 51 carries out temperature-compensating.
In said clamping circuit 52a, above-mentioned clamp diode (D11) is connected with above-mentioned switching power circuit 52b, and above-mentioned capacitor (C13) then is connected with 1 end of above-mentioned transformer 60.
Include among the above-mentioned switching power circuit 52b: the rectifier power source that inserts in the above-mentioned switch 51 is charged, and rise to a reference value when above in 2 terminal voltages of above-mentioned transformer 60, the soft unlatching capacitor (C12) that above-mentioned switch is disconnected; Cut off resistance (R11), it inserts the electric current that is used to control above-mentioned switch by the electric current of said clamping circuit 52a supply and the discharge power supply of above-mentioned soft unlatching capacitor (C12).
In above-mentioned switching power circuit 52b, the source electrode of above-mentioned switch 51 is connected with above-mentioned soft unlatching capacitor (C12), and above-mentioned soft unlatching capacitor (C12) then is connected with voltage that supplies to said clamping circuit 52a and the cut-out resistance (R11) that inserts the cut-out electric current of above-mentioned switch 51.
The power conversion that above-mentioned transformer 60 will be input to its 1 time end is a low-voltage, exports and it is linked in the above-mentioned low-voltage end 70.
70 voltages by 2 end outputs of above-mentioned transformer 60 of above-mentioned low-voltage end drive.
Below the operation among the present invention is described.
Fig. 5 is the flow chart of driving method of the air-conditioner of the carried out power supply unit control among the present invention, and the driving method to air-conditioner describes below.
As shown in Figure 5, in the 1st step, above-mentioned power end 40 is linked into bridge rectifier with the alternating voltage of input, is DC voltage with above-mentioned alternating voltage full-wave rectification, and (S80) (S81) in capacitor (C13) with above-mentioned store voltages of carrying out rectification.
After the source electrode that is connected IC (T10) with above-mentioned power control part 50 above-mentioned connects, the power supply of storage will discharge (S82) in the above-mentioned capacitor (C13).
Above-mentioned connection IC (T10) will carry out switch connection (On) operation by the power supply of input, the soft unlatching capacitor (C12) that makes the above-mentioned switching power circuit 52b that comprises in the above-mentioned feedback power supply unit 52 is to the power supply of input charge (S83).
Then, insert the power supply (S83) of rectification to 1 end input of above-mentioned transformer 60 by above-mentioned soft unlatching capacitor (C12).
The power supply that inserts in 1 end by above-mentioned transformer 60, low-voltage (S83) from output transforms to 2 times of above-mentioned transformer 60 that will hold.
At this moment, the input power supply will rise in 1 time of above-mentioned transformer 60 end, thus, and the low-voltage of exporting from 2 ends of above-mentioned transformer 60 also will rise (S83).
Wherein, to the current feedback of 1 time of above-mentioned transformer 60 end output output in the above-mentioned power control part 60 (S84).
In the 2nd step,, will insert the feedback current (S84) of the rising that 1 time of above-mentioned transformer 60 holds in the above-mentioned power control part 50 because the rising of the input power supply of above-mentioned transformer 60 will cause its out-put supply to rise.
The feedback current of input is linked among the said clamping circuit 52a in the above-mentioned power control part 50, and said clamping circuit 52a then supplies to above-mentioned cut-out resistance (R12) with the feedback current of above-mentioned input.
At this moment, above-mentioned squelch circuit (R12) is used for removing the noise power supply that above-mentioned feedback current comprises, and sends the feedback current of above-mentioned removal noise to said clamping circuit (D11) and carry out halfwave rectifier.
In said clamping circuit 52a, above-mentioned capacitor (C13) uses as temperature-compensating, and it prevents the heat that switching manipulation produced of above-mentioned connection IC (T10).
In the present invention, remove noise, and reduce the on-off cycle of the switching manipulation of above-mentioned connection IC (T10), to reduce power loss and electric power is controlled (S85) by said clamping circuit 52a.
The above-mentioned Switching Power Supply 52b of portion obtains removing the power supply of noise from said clamping circuit 52a, and above-mentioned soft unlatching capacitor (C12) then discharges and supplies with the required power supply of switching manipulation to above-mentioned connection IC (T10).
At this moment, the cut-out resistance (R11) of the above-mentioned Switching Power Supply 52b of portion inserts electric current to above-mentioned connection IC (T10) it is driven by the Switching Power Supply of above-mentioned soft unlatching capacitor (C12) discharge and the out-put supply of said clamping circuit 52a.
Wherein, under above-mentioned feedback current rose to situation more than a reference value, above-mentioned cut-out resistance (R11) made above-mentioned IC (T10) carry out switch to disconnect (Off) operation (S86).
Wherein, Fig. 6 is a detected oscillogram in the transformer of air-conditioner of the carried out power supply unit control among the present invention, and its mathematical expression is as follows:
[mathematical expression 1]
Vfb＝Vor+Vleackage
Vor＝(Np/Ns)*Vout
(Vfb: the both end voltage of soft unlatching capacitor (C13)
Vor: 1 terminal voltage of transformer
Vleackage: be included in the noise voltage among the Vor
Np, Ns: 1 end and 2 end coiling numbers of transformer
Vout: 2 terminal voltages of transformer)
Below with reference to the oscillogram among Fig. 6 above-mentioned [mathematical expression 1] described.
The Vleackage voltage (noise) that occurs in [mathematical expression 1] is along with reducing by the cut-out resistance (R12) of said clamping circuit (52b).Thus, along with reducing of above-mentioned Vleakage voltage, the value of above-mentioned Vor and Vfb is (Vfb=Vor) much at one.
Wherein, above-mentioned Vor voltage is that 1 time of above-mentioned transformer 60 end and the coiling number held for 2 times are than the value that is multiplied by 2 terminal voltages.
In the 3rd step, when above-mentioned connection IC (T10) carries out switch disconnection (Off) operation, the supply of will cutting off the electricity supply, and above-mentioned soft unlatching capacitor (C12) is discharged.
Wherein, the discharge voltage of above-mentioned soft unlatching capacitor (C12) will reduce, and the voltage of 1 end that supplies to above-mentioned transformer 60 be reduced, and make the voltage that is input to above-mentioned connection IC (T10) also will reduce (S87).
At this moment, reduce owing to supply to the input voltage of above-mentioned transformer 60, when its output voltage reduces, Dui Ying feedback current also will reduce with it.
Thus, when the feedback current that inserts among the said clamping circuit 52a reduces, switch (switching) cycle that supplies to above-mentioned switch 51 will increase, thereby increase the switching current of supplying with to above-mentioned connection IC (T10) (S87).
When the electric current of supplying with to above-mentioned connection IC (T10) increases, above-mentioned connection IC (T10) will carry out switch connection (On) operation and to above-mentioned transformer 60 supply powers.
Supply with to carry out power supply to above-mentioned transformer 60 along with above-mentioned connection IC (T10) carries out switching manipulation, thereby make above-mentioned transformer 60 output LOW voltages (S89).
Thus, to go into feedback current by 1 termination of above-mentioned transformer 60, at this moment, the above-mentioned power control part 50 that constitutes by the switch 51 that carries out switching manipulation when above-mentioned feedback current rises will be used, and the above-mentioned connection IC (T10) that rapidly carry out switching manipulation corresponding with the rising of feedback current, so that the situation of the heat (Celsius, Fahrenheit) that switching manipulation is produced is controlled.
And, go into feedback current by 1 termination from above-mentioned transformer 60, corresponding circuit structure is oversimplified, and reduced the manufacturing cost of product thus and guarantee the space that circuit arrangement is required.Simultaneously, also can prevent to produce overvoltage and prevent that parts are damaged, thereby can improve the stability and the efficient of product and buy competitiveness by switching manipulation fast.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
The effect of invention
Whether and control power supply and supply with the air-conditioner of carried out power supply unit among the present invention control, the rising that detects feedback current at 1 end of transformer accelerate switching speed and prevent output over-voltage, thus contingent loss in the parts around reducing. And, by the present invention circuit structure is oversimplified, simultaneously, can fully guarantee the space that circuit structure is required and reduce required components number, thereby with the producing cost of corresponding minimizing product and improve the quality of product and competitiveness and stability, efficiency.
Claims (10)
1. the air-conditioner that can carry out power supply unit control comprises indoor set and off-premises station; It is characterized in that, also comprise:
Transformer is used for that input voltage is converted to low-voltage and exports;
Low-voltage end, the low-voltage of exporting by above-mentioned transformer drives;
Power control part, when the once feedback current of end of transformer rises to a reference value when above, the input voltage of control transformer rises to prevent output voltage.
2. the air-conditioner that carries out power supply unit control according to claim 1 is characterized in that:
Above-mentioned power control part inserts the feedback current of the power supply correspondence of supplying with to 1 end of above-mentioned transformer, and to rise to a reference value at above-mentioned feedback current when above, the power supply that the above-mentioned transformer of subtend is supplied with is controlled.
3. the air-conditioner that carries out power supply unit control according to claim 1 is characterized in that, includes in the above-mentioned power control part:
The feedback power supply unit, when 1 end feedback current of above-mentioned transformer rises, its out-put supply will rise;
Switch, when when above-mentioned feedback power supply unit is supplied with the out-put supply that rises, it will carry out opening operation.
4. the air-conditioner that carries out power supply unit control according to claim 3 is characterized in that, includes in the above-mentioned feedback power supply unit:
Clamp circuit is used for removing the noise that feedback current comprises;
Switching power circuit, when connecting the electric current of removal noise from said clamping circuit, it will make above-mentioned switch drive.
5. the air-conditioner that carries out power supply unit control according to claim 4 is characterized in that, includes in the said clamping circuit:
Resistance is used to remove noise voltage;
Diode is used for the voltage of above-mentioned removal noise is carried out clamper;
Capacitor when producing heat in the switching manipulation of above-mentioned switch, is used for temperature-compensating.
6. the air-conditioner that carries out power supply unit control according to claim 4 is characterized in that, includes in the above-mentioned switching power circuit:
Soft unlatching capacitor, it charges to the rectifier power source of connecting in the above-mentioned switch, makes 2 terminal voltages at above-mentioned transformer rise to a reference value when above, and it will cut off above-mentioned switch;
Cut off resistance, it compares the electric current supplied with in the said clamping circuit and the discharge power supply of above-mentioned soft unlatching capacitor, and inserts the electric current that is used to control above-mentioned switch.
7. the air-conditioner that carries out power supply unit control according to claim 3 is characterized in that:
Include in the above-mentioned switch and connect IC.
8. the air-conditioner that carries out power supply unit control according to claim 7 is characterized in that, includes among the above-mentioned connection IC:
Drain electrode, it is connected with above-mentioned rectifier terminal and inserts rectifier power source;
Control pin (control pin), it is connected with the cut-out resistance of above-mentioned switching power circuit, and inserts the required electric current of switching manipulation;
Source electrode, it is connected with the soft unlatching capacitor of above-mentioned switching power circuit, and the power supply that the above-mentioned drain electrode of subtend is supplied with charges.
9. the method for operating that can carry out the air-conditioner of power supply unit control is characterized in that, comprises following step:
The 1st step, whether the rising of 1 end feedback current of detection transformer to be;
The 2nd step when above-mentioned detected feedback current rises to a reference value when above, is cut off the power supply of supplying with to above-mentioned transformer.
10. method of operating of carrying out the air-conditioner of power supply unit control according to claim 9 is characterized in that, also includes:
The 3rd step, in above-mentioned the 2nd step, cut off the electricity supply supply with after, when detected feedback current is a reference value when following, will recover power supply once more and supply with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101225319A CN1987233B (en) | 2005-12-22 | 2005-12-22 | Air conditioner capable of controlling power source and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101225319A CN1987233B (en) | 2005-12-22 | 2005-12-22 | Air conditioner capable of controlling power source and its operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987233A CN1987233A (en) | 2007-06-27 |
| CN1987233B true CN1987233B (en) | 2010-12-22 |
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ID=38184126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005101225319A Expired - Fee Related CN1987233B (en) | 2005-12-22 | 2005-12-22 | Air conditioner capable of controlling power source and its operation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1987233B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106100075A (en) * | 2016-08-25 | 2016-11-09 | 深圳沃海森科技有限公司 | The transducer air conditioning of ultrasonic wireless charging |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207601A (en) * | 1997-07-31 | 1999-02-10 | 三星电机株式会社 | Power factor correction converter |
| CN1363804A (en) * | 2001-11-09 | 2002-08-14 | 海尔集团公司 | Soft start controller of domestic air conditioner |
| KR20030023157A (en) * | 2001-09-12 | 2003-03-19 | 만도공조 주식회사 | Power control system of air conditioner on stan-by and method thereof |
| KR20040017123A (en) * | 2002-08-20 | 2004-02-26 | 엘지전자 주식회사 | Apparatus for controlling multi airconditioner |
| CN1490693A (en) * | 2002-09-18 | 2004-04-21 | ���ǵ�����ʽ���� | Power supply with cutting electronic apparatus and power supply controller |
| CN1497829A (en) * | 2002-10-16 | 2004-05-19 | ���ǵ�����ʽ���� | Power supply capable of protecting circuit of electric apparatus |
| CN1573249A (en) * | 2003-05-23 | 2005-02-02 | 日立家用电器公司 | Communication control device of air conditioner |
-
2005
- 2005-12-22 CN CN2005101225319A patent/CN1987233B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207601A (en) * | 1997-07-31 | 1999-02-10 | 三星电机株式会社 | Power factor correction converter |
| KR20030023157A (en) * | 2001-09-12 | 2003-03-19 | 만도공조 주식회사 | Power control system of air conditioner on stan-by and method thereof |
| CN1363804A (en) * | 2001-11-09 | 2002-08-14 | 海尔集团公司 | Soft start controller of domestic air conditioner |
| KR20040017123A (en) * | 2002-08-20 | 2004-02-26 | 엘지전자 주식회사 | Apparatus for controlling multi airconditioner |
| CN1490693A (en) * | 2002-09-18 | 2004-04-21 | ���ǵ�����ʽ���� | Power supply with cutting electronic apparatus and power supply controller |
| CN1497829A (en) * | 2002-10-16 | 2004-05-19 | ���ǵ�����ʽ���� | Power supply capable of protecting circuit of electric apparatus |
| CN1573249A (en) * | 2003-05-23 | 2005-02-02 | 日立家用电器公司 | Communication control device of air conditioner |
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| Publication number | Publication date |
|---|---|
| CN1987233A (en) | 2007-06-27 |
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