CN204794747U - Air conditioner supply circuit - Google Patents
Air conditioner supply circuit Download PDFInfo
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- CN204794747U CN204794747U CN201520444911.3U CN201520444911U CN204794747U CN 204794747 U CN204794747 U CN 204794747U CN 201520444911 U CN201520444911 U CN 201520444911U CN 204794747 U CN204794747 U CN 204794747U
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- air conditioner
- power supply
- rectifier bridge
- resistance
- supply circuits
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Abstract
The utility model discloses an air conditioner supply circuit, including rectifier bridge, first electric capacity, first switching element, second switch device and first resistance, exchange the AC input that N line input was connected to the rectifier bridge, exchange L line input was connected to the rectifier bridge through first switching element the 2nd AC input, the first end and the interchange L line input of first resistance are connected, and the second end of first resistance is connected with the first end of second switch device, the second end of second switch device is connected with the 2nd AC input of rectifier bridge, a DC output of rectifier bridge is connected to the positive pole of first electric capacity to be connected with air conditioner supply circuit's DC output A, the negative pole that the 2nd DC output of rectifier bridge was connected to first electric capacity is and ground connection. The second switch device is only worked when the start, can adopt the relay or the silicon controlled rectifier of undercurrent, therefore the cost of circuit is lower, and the life -span of device is longer, the reliability is better.
Description
Technical field
The utility model relates to household electrical appliance technical field, is specifically related to a kind of air conditioner power supply circuits.
Background technology
Existing transducer air conditioning because its refrigerating/heating is effective and have energy-conservation feature, and is widely used in family and business scope.
Due to the Structure and Properties feature of transducer air conditioning own control systems, initially can cause higher surge current powering on, in addition the alternating voltage of some areas or time period is also unstable in addition, therefore requires to be designed with in air conditioner control system the protecting component suppressing power supply initial current overload.
For the electrochemical capacitor in circuit, (capacitance is generally not less than 470uF to prior art, for the convertible frequency air-conditioner of 1.5, capacitance is more than 1000uF) charging current peak value, be in series with current-limiting resistance and the first relay for control circuit break-make in circuit, described current-limiting resistance is also parallel with the second relay for controlling described current-limiting resistance short circuit.
The shortcoming existing for air conditioner power supply circuits of prior art is:
1, circuit reliability is poor, and the first relay and the second relay two relays are all long-term opening states when normal work, and long-term work, affects the life-span;
2, cost is high, and during energising work, the first relay and the second relay two relays are all the big current flowing through normal work, need two relays of big current.
Utility model content
The purpose of this utility model is, provides a kind of air conditioner power supply circuits, can prevent from damaging circuit at the initial caused surge current that powers on, and possess higher reliability, cost is low simultaneously.
For solving above technical problem, the utility model embodiment provides a kind of air conditioner power supply circuits, comprise rectifier bridge, the first electric capacity, the first switching device, second switch device and the first resistance, and there is interchange N line input, interchange L line input and DC output end A;
Described interchange N line input is connected to the first ac input end of described rectifier bridge; Described interchange L line input is connected to the second ac input end of described rectifier bridge by described first switching device; The first end of described first resistance is connected with the described L line input that exchanges, and the second end of described first resistance is connected with the first end of described second switch device; Second end of described second switch device is connected with the second ac input end of described rectifier bridge; First DC output end of described rectifier bridge is connected to the positive pole of described first electric capacity, and is connected with the DC output end A of described air conditioner power supply circuits; Second DC output end of described rectifier bridge is connected to the negative pole of described first electric capacity and ground connection.
Preferably, described air conditioner power supply circuits also comprise the first diode, voltage stabilizing didoe and the second electric capacity, and have DC output end B; The positive pole of described first diode is connected with the second end of described first resistance; The positive pole of described voltage stabilizing didoe is connected with the described N line input that exchanges; The negative pole of described voltage stabilizing didoe is connected with the negative pole of described first diode, and is connected with described DC output end B; Described second electric capacity is in parallel with the two ends of described voltage stabilizing didoe.In this embodiment, a D.C. regulated power supply module is formed by described first resistance, described first diode, described voltage stabilizing didoe and described second electric capacity; In described D.C. regulated power supply module, L/N alternating current through described first electric resistance partial pressure and the first diode rectification, then obtains the direct voltage of after the second capacitor filtering and voltage stabilizing didoe voltage stabilizing, exports through DC output end B.
Preferably, described DC output end B is the indoor and outdoor communicating circuit feeder ear of described air conditioner.In the internal-external machine communicating circuit of air conditioner, need the DC power supply of a 24V, can be provided by described D.C. regulated power supply module.Namely, in this enforcement, described first resistance plays the effect of current limliting when starting up, and when stable state, described first resistance plays the effect of dividing potential drop in D.C. regulated power supply module.Thus optimize the structure of circuit, save the cost of device.
Preferably, described first switching device is relay or controllable silicon.
Preferably, described second switch device is relay or controllable silicon.
Preferably, described first resistance is PTC (PositiveTemperatureCoefficient, positive temperature coefficient) thermistor or NTC (NegativeTemperatureCoefficient, negative temperature coefficient) thermistor or cement resistor.
Compared to prior art, the beneficial effect of a kind of air conditioner power supply circuits of the present utility model is: the structure of the utility model to the air conditioner power supply circuits of prior art is improved, in circuit structure wherein after improvement, second switch device only plays charging effect when starting shooting, can adopt relay or the controllable silicon of small area analysis, thus the cost of circuit is lower; Further, the only work when starting shooting of second switch device, just quit work after being full of electricity to electrochemical capacitor, thus the life-span of device is longer, better reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of air conditioner power supply circuits of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, it is the structural representation of a kind of air conditioner power supply circuits of the present utility model.Air conditioner power supply circuits of the present utility model comprise rectifier bridge BD1, the first electric capacity C1, the first resistance R1, the first switching device and second switch device, and have interchange N line input, interchange L line input and DC output end A; Wherein, described interchange N line input is for being connected to the interchange N line of civil power; Described interchange L line input is for being connected to the interchange L line of civil power; Described DC output end A is used for being connected to successive load, for described successive load provides DC power supply.
Described interchange N line input is connected to first ac input end of described rectifier bridge BD1; Described interchange L line input is connected to second ac input end of described rectifier bridge BD1 by described first switching device; The first end of described first resistance R1 is connected with the described L line input that exchanges, and second end of described first resistance R1 is connected with the first end of described second switch device; Second end of described second switch device is connected with second ac input end of described rectifier bridge BD1; First DC output end of described rectifier bridge BD1 is connected to the positive pole of described electrochemical capacitor C1, and is connected with the DC output end A of described air conditioner power supply circuits; Second DC output end of described rectifier bridge BD1 is connected to the negative pole of described electrochemical capacitor C1 and ground connection.
Preferably, described air conditioner power supply circuits also comprise the first diode D1, voltage stabilizing didoe ZD1 and the second electric capacity C2, and have DC output end B; The positive pole of described first diode D1 is connected with second end of described first resistance R1; The positive pole of described voltage stabilizing didoe ZD1 is connected with the described N line input that exchanges; The negative pole of described voltage stabilizing didoe ZD1 is connected with the negative pole of described first diode D1, and is connected with described DC output end B; Described second electric capacity C2 is in parallel with the two ends of described voltage stabilizing didoe ZD1.In this embodiment, a D.C. regulated power supply module (the dotted line frame as in Fig. 1) is formed by described first resistance R1, described first diode D1, described voltage stabilizing didoe ZD1 and described second electric capacity C2; In described D.C. regulated power supply module, L/N alternating current through described first resistance R1 dividing potential drop and the first diode D1 rectification, then obtains the direct voltage of after the second electric capacity C2 filtering and voltage stabilizing didoe ZD1 voltage stabilizing, exports through DC output end B.
Preferably, described DC output end B is the indoor and outdoor communicating circuit feeder ear of described air conditioner.Such as in the internal-external machine communicating circuit of air conditioner, need the DC power supply of a 24V, can be provided by described D.C. regulated power supply module.Namely, in this enforcement, described first resistance R1 plays the effect of current limliting when starting up, and when stable state, described first resistance R1 plays the effect of dividing potential drop in D.C. regulated power supply module.Thus optimize the structure of circuit, save the cost of device.
Preferably, described first switching device is relay or controllable silicon.In the present embodiment, described first switching device adopts relay, as the RL1 in Fig. 1.
Preferably, described second switch device is relay or controllable silicon.In the present embodiment, described second switch device adopts relay, as the RL2 in Fig. 1.
Preferably, described first resistance R1 is PTC (PositiveTemperatureCoefficient, positive temperature coefficient) thermistor or NTC (NegativeTemperatureCoefficient, negative temperature coefficient) thermistor or cement resistor.
The operation principle of air conditioner power supply circuits of the present utility model is as follows: when air conditioner is started shooting, described first switching device disconnects, described second switch device closes, L/N alternating current is that described electrochemical capacitor C1 charges through described first resistance R1 and described second switch device, described rectifier bridge BD1, resistance by described first resistance R1 is come to described electrochemical capacitor C1 current limliting, thus surge current when limiting starting up; After described electrochemical capacitor C1 is full of electricity, described first switching device closes, and described second switch device disconnects, L N alternating current be input to described rectifier bridge BD1 through described first relay, and to be converted to direct current be successive load circuit supply.
Compared to prior art, the beneficial effect of a kind of air conditioner power supply circuits of the present utility model is: the structure of the utility model to the air conditioner power supply circuits of prior art is improved, in circuit structure wherein after improvement, second switch device only plays charging effect when starting shooting, can adopt relay or the controllable silicon of small area analysis, thus the cost of circuit is lower; The only work when starting shooting of second switch device, just quit work after being full of electricity to electrochemical capacitor C1, thus the life-span of device is longer, better reliability.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.
Claims (6)
1. air conditioner power supply circuits, is characterized in that, comprise rectifier bridge, the first electric capacity, the first switching device, second switch device and the first resistance, and have interchange N line input, interchange L line input and DC output end A;
Described interchange N line input is connected to the first ac input end of described rectifier bridge; Described interchange L line input is connected to the second ac input end of described rectifier bridge by described first switching device; The first end of described first resistance is connected with the described L line input that exchanges, and the second end of described first resistance is connected with the first end of described second switch device; Second end of described second switch device is connected with the second ac input end of described rectifier bridge; First DC output end of described rectifier bridge is connected to the positive pole of described first electric capacity, and is connected with the DC output end A of described air conditioner power supply circuits; Second DC output end of described rectifier bridge is connected to the negative pole of described first electric capacity and ground connection.
2. air conditioner power supply circuits as claimed in claim 1, it is characterized in that, described air conditioner power supply circuits also comprise the first diode, voltage stabilizing didoe and the second electric capacity, and have DC output end B; The positive pole of described first diode is connected with the second end of described first resistance; The positive pole of described voltage stabilizing didoe is connected with the described N line input that exchanges; The negative pole of described voltage stabilizing didoe is connected with the negative pole of described first diode, and is connected with described DC output end B; Described second electric capacity is in parallel with the two ends of described voltage stabilizing didoe.
3. air conditioner power supply circuits as claimed in claim 2, it is characterized in that, described DC output end B is the indoor and outdoor communicating circuit feeder ear of described air conditioner.
4. air conditioner power supply circuits as claimed in claim 1, it is characterized in that, described first switching device is relay or controllable silicon.
5. air conditioner power supply circuits as claimed in claim 1, it is characterized in that, described second switch device is relay or controllable silicon.
6. the air conditioner power supply circuits as described in claim 4 or 5, is characterized in that, described first resistance is PTC thermistor or NTC thermistor or cement resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520444911.3U CN204794747U (en) | 2015-06-24 | 2015-06-24 | Air conditioner supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520444911.3U CN204794747U (en) | 2015-06-24 | 2015-06-24 | Air conditioner supply circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204794747U true CN204794747U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520444911.3U Active CN204794747U (en) | 2015-06-24 | 2015-06-24 | Air conditioner supply circuit |
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| CN (1) | CN204794747U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442595A (en) * | 2018-11-05 | 2019-03-08 | 广东美的制冷设备有限公司 | Air conditioner and its outdoor unit control circuit |
| CN110030709A (en) * | 2019-04-29 | 2019-07-19 | 广东美的制冷设备有限公司 | Drive control circuit, air conditioner, control method and computer readable storage medium |
| WO2020147234A1 (en) * | 2019-01-16 | 2020-07-23 | 美的集团武汉制冷设备有限公司 | Power supply control circuit and inverter air conditioner |
| CN113959060A (en) * | 2021-10-22 | 2022-01-21 | 四川长虹空调有限公司 | Power-on control circuit, detection circuit and fault judgment method of air conditioner outdoor unit |
-
2015
- 2015-06-24 CN CN201520444911.3U patent/CN204794747U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442595A (en) * | 2018-11-05 | 2019-03-08 | 广东美的制冷设备有限公司 | Air conditioner and its outdoor unit control circuit |
| WO2020147234A1 (en) * | 2019-01-16 | 2020-07-23 | 美的集团武汉制冷设备有限公司 | Power supply control circuit and inverter air conditioner |
| CN110030709A (en) * | 2019-04-29 | 2019-07-19 | 广东美的制冷设备有限公司 | Drive control circuit, air conditioner, control method and computer readable storage medium |
| CN113959060A (en) * | 2021-10-22 | 2022-01-21 | 四川长虹空调有限公司 | Power-on control circuit, detection circuit and fault judgment method of air conditioner outdoor unit |
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