CN201248027Y - Frequency-change air conditioner - Google Patents
Frequency-change air conditioner Download PDFInfo
- Publication number
- CN201248027Y CN201248027Y CNU2008200273831U CN200820027383U CN201248027Y CN 201248027 Y CN201248027 Y CN 201248027Y CN U2008200273831 U CNU2008200273831 U CN U2008200273831U CN 200820027383 U CN200820027383 U CN 200820027383U CN 201248027 Y CN201248027 Y CN 201248027Y
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- voltage
- input
- booster circuit
- air conditioning
- transducer
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Abstract
The utility model discloses a transducer air conditioner which comprises a transducer and a compressor connected with the transducer, and also comprises a DC boosted circuit, wherein the DC boosted circuit comprises two input ends connected with an AC supply, two output ends which are connected with the transducer and output DC, and a rectification circuit which is connected between the input ends and the output ends and converts AC supply voltage into DC supply voltage; the DC boosted circuit also comprises a boosted circuit which is connected between the two output ends and is formed by connecting a plurality of polar capacitors in series, and one joint among the polar capacitors is connected with one of the input ends. Due to the DC boosted circuit, the lower voltage AC supply is input for being rectified and boosted, and then higher DC voltage is output for driving the transducer and the compressor, thereby the transducer air conditioner can be ensured to always work normally when the low AC supply supplies.
Description
Technical field
The utility model relates to a kind of transducer air conditioning, specifically, relates to a kind of transducer air conditioning that has DC voltage booster circuit, belongs to air-conditioning and Refrigeration Engineering technical field.
Background technology
Convertible frequency air-conditioner is a kind of air conditioner that uses frequency-changeable compressor and fuzzy control technology, can regulate refrigerating speed according to the variation of indoor air temperature, has quick thermoregulation, characteristics such as noise is little, power consumption is low, long service life, is air-conditioning market development in future direction.Include rectification circuit, frequency converter and compressor in the convertible frequency air-conditioner, alternating current input power supplying is a DC power supply through the rectification circuit rectification, high power transistor in the frequency converter is under the control signal control of above-mentioned DC power supply driving and air-conditioner controller, the power supply signal that output frequency is adjustable, machine operation in the Driven Compressor, make motor speed change, realize the continuous variation of air conditioner refrigerating amount, reach the purpose of temperature adjustment, consumption reduction with frequency change.Wherein, compressor is higher to the DC power supply voltage request that drives frequency converter work.When the AC supply voltage of air conditioner input reduces, DC power supply voltage after rectification also decreases, cross low DC power supply voltage and be used to drive frequency converter, and then Driven Compressor, the raising frequency speed change is restricted in the time of can causing compressor operating, even may cause compressor normally not start.If compressor is speed change or can not normally start normally, not only influence the temperature adjusting performance of air-conditioning, also can damage compressor, reduce the useful life of air-conditioning.When products export is to areas such as Japan, North Americas especially at home, because domestic line voltage is 220V, 50Hz, the convertible frequency air-conditioner product design is used for being fit to domestic electrical network, and the electrical network in areas such as Japan, North America is for exchanging the power supply of 110-115V, 60Hz, exporting to these regional air-conditioning products often can not normally use, thereby limited products export, reduced the occupation rate of market and the product competitiveness of Air-conditioning Enterprise.
Summary of the invention
The utility model is at the defective of the cisco unity malfunction when AC supply voltage is low of transducer air conditioning in the prior art, a kind of convertible frequency air-conditioner is provided, in described convertible frequency air-conditioner, be provided with DC voltage booster circuit, low-voltage alternating current power supply input can be carried out rectification and boost by described DC voltage booster circuit, export higher direct voltage then, in order to driving frequency converter and compressor, thereby guarantee that convertible frequency air-conditioner still can operate as normal when low AC supply voltage is powered.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of transducer air conditioning comprises frequency converter and the compressor that is connected with described frequency converter; Described transducer air conditioning also comprises DC voltage booster circuit, described DC voltage booster circuit comprises that two inputs that are connected with AC power, two are connected with described frequency converter and the output of output DC, and is connected the rectification circuit that is converted to DC power supply voltage between described input and the described output, with AC supply voltage; Described DC voltage booster circuit also comprise be connected between two outputs, by the booster circuit that a plurality of polar capacitors series connection constitute, a tie point between the described electric capacity is connected with one of them input.
According to the utility model, described booster circuit comprises two polar capacitors that are in series, and the tie point between two electric capacity is connected with one of them input.
Preferably, described polar capacitor is an electrochemical capacitor.
According to the utility model, described booster circuit two ends are parallel with filter capacitor.
According to the utility model, described rectification circuit is the bridge rectifier that four power diodes constitute.
Compared with prior art, advantage of the present utility model and good effect are: by DC voltage booster circuit is set in transducer air conditioning, under the lower situation of alternating current input power supplying, it is direct current that described DC voltage booster circuit will exchange input rectifying, and direct current is boosted by the electric capacity of mutual series connection, identical DC power supply after the last exportable and higher AC power rectification, be used to drive frequency converter, realize the operate as normal of convertible frequency air-conditioner when low AC power is imported, enlarge the scope of application of air-conditioning.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model transducer air conditioning.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
See also the circuit theory diagrams of transducer air conditioning shown in Figure 1, described transducer air conditioning comprises frequency converter and by the frequency converter compressor driven, is connected with DC voltage booster circuit between described frequency converter and AC power input.Described DC voltage booster circuit comprises two inputs 1 that are connected with the AC power input and 2, two outputs 3 and 4 that are connected respectively with described frequency converter anodal input P and negative pole input N.Input 1 and 2 and output 3 and 4 between be connected with the bridge rectifier that power diode D1, D2, D3 and D4 constitute; Wherein, diode D1 and D4 constitute the rectification circuit of positive half period, and diode D2 and D3 constitute the rectification circuit of negative half-cycle.Between output 3 and 4, also be connected with the booster circuit that polarity electrochemical capacitor E1 and E2 are composed in series; Wherein, the positive pole of electric capacity E1 is connected with output 3, and the negative pole of electric capacity E2 is connected with output 4, and the tie point M between the positive pole of the negative pole of electric capacity E1 and electric capacity E2 is connected with input 2.In addition, also be parallel with filter capacitor E3 at the series connection booster circuit two ends of electric capacity E1 and electric capacity E2 composition.
The course of work of foregoing circuit is as follows: the low-voltage alternating current power supply of 110-115V, 60Hz inputs to the DC voltage booster circuit from input 1 and 2.In the positive half period of AC power, the voltage of input 1 is high voltage, the voltage of input 2 is low-voltage, diode D1 and D4 conducting, D2 and D3 close, and input current forms two branch roads, and the flow direction of a current branch is input 1 → diode D1 → electric capacity E1 → input 2, the flow direction of another current branch is input 1 → diode D1 → electric capacity E3 → diode D4 → input 2, and power supply is given electrochemical capacitor E1 charging.In the negative half-cycle of AC power, the voltage of input 2 is high voltage, the voltage of input 1 is low-voltage, at this moment, diode D2 and D3 conducting, D1 and D4 close, input current also forms two branch roads, wherein the flow direction of a current branch is input 2 → electric capacity E2 → diode D3 → input 1, and the flow direction of another current branch is input 2 → diode D2 → electric capacity E3 → diode D3 → input 1, and power supply is given electrochemical capacitor E2 charging.In the AC power one-period, realize multiplication at the voltage at the series arm two ends of electric capacity E1 and E2.Therefore, the voltage alternating current input power supplying is exported the direct voltage of 310-320V, and the direct current that is not less than 20A can be provided after above-mentioned DC voltage booster circuit rectification, boosting between output 3 and 4.Above-mentioned direct voltage inputs to the input P and the N of frequency converter as the DC power supply of high power transistor in the frequency converter, frequency converter is under the effect of air-conditioner controller control signal, the signal of telecommunication of output variable frequency, and then Driven Compressor work, guarantee that transducer air conditioning still can normally start operation when low-voltage alternating current power supply is powered.
In the above-mentioned transducer air conditioning, be the purpose that realizes that the series connection polar capacitor boosts, electric capacity E1 and E2 select the polarity electrochemical capacitor of big capacity, high withstand voltage for use.Described transducer air conditioning can be the AC frequency conversion air conditioner, also can be direct current varied-frequency air conditioner.
Transducer air conditioning described in the utility model is by being provided with DC voltage booster circuit, can be with the low-voltage alternating current power supply input rectifying, boost, realize voltage multiplication, thereby for frequency converter provide with the rectification of 220V AC power after essentially identical DC power supply, be used for the driving of compressor, can satisfy the normal use that transducer air conditioning is the areas such as Japan, North America of 110-115V at the mains supply power supply.
Certainly; the above only is a kind of preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1, a kind of transducer air conditioning, comprise frequency converter and the compressor that is connected with described frequency converter, it is characterized in that, described transducer air conditioning also comprises DC voltage booster circuit, described DC voltage booster circuit comprises that two inputs that are connected with AC power, two are connected with described frequency converter and the output of output DC, and is connected the rectification circuit that is converted to DC power supply voltage between described input and the described output, with AC supply voltage; Described DC voltage booster circuit also comprise be connected between two outputs, by the booster circuit that a plurality of polar capacitors series connection constitute, a tie point between the described electric capacity is connected with one of them input.
2, transducer air conditioning according to claim 1 is characterized in that, described booster circuit comprises two polar capacitors that are in series, and the tie point between two electric capacity is connected with one of them input.
3, transducer air conditioning according to claim 1 and 2 is characterized in that, described polar capacitor is an electrochemical capacitor.
4, transducer air conditioning according to claim 3 is characterized in that, described booster circuit two ends are parallel with filter capacitor.
5, transducer air conditioning according to claim 4 is characterized in that, described rectification circuit is the bridge rectifier that four power diodes constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200273831U CN201248027Y (en) | 2008-08-27 | 2008-08-27 | Frequency-change air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200273831U CN201248027Y (en) | 2008-08-27 | 2008-08-27 | Frequency-change air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201248027Y true CN201248027Y (en) | 2009-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200273831U Expired - Fee Related CN201248027Y (en) | 2008-08-27 | 2008-08-27 | Frequency-change air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201248027Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473871A (en) * | 2018-04-09 | 2019-03-15 | 国家电网公司 | A kind of high-tension switch cabinet earthing switch blade computer anti-misoperation and lockout device and method |
-
2008
- 2008-08-27 CN CNU2008200273831U patent/CN201248027Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473871A (en) * | 2018-04-09 | 2019-03-15 | 国家电网公司 | A kind of high-tension switch cabinet earthing switch blade computer anti-misoperation and lockout device and method |
| CN109473871B (en) * | 2018-04-09 | 2020-07-14 | 国家电网公司 | Microcomputer anti-misoperation locking device and method for grounding knife switch of high-voltage switch cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20150827 |
|
| EXPY | Termination of patent right or utility model |