CN202524079U - Strong-wind resistant protective circuit for air conditioner outdoor unit - Google Patents
Strong-wind resistant protective circuit for air conditioner outdoor unit Download PDFInfo
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- CN202524079U CN202524079U CN2012201437252U CN201220143725U CN202524079U CN 202524079 U CN202524079 U CN 202524079U CN 2012201437252 U CN2012201437252 U CN 2012201437252U CN 201220143725 U CN201220143725 U CN 201220143725U CN 202524079 U CN202524079 U CN 202524079U
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- control system
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- 230000001681 protective effect Effects 0.000 title claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
Provided is a strong-wind resistant protective circuit for an air conditioner outdoor unit, characterized by comprising a reverse isolation circuit and a reverse current absorption circuit, wherein the reverse isolation circuit is serially connected between the input terminal IN+ of the DC blower fan A and the DC anode +P of the air-conditioning control system circuit; and two ends of the reverse current absorption circuit are parallelly connected between the input terminal IN+ and the output terminal IN- of the DC blower fan A. The strong-wind resistant protective circuit can effectively attract the current wave generated by the reverse rotation of the DC blower fan, thereby effectively protecting the DC frequency conversion air-conditioning control system circuit under the severe strong wind environment and realizing the objective of decreasing air conditioner maintenance rate and prolonging the service lifetime of an air conditioner. The strong-wind resistant protective circuit features simple structure, reliable performance, and low cost.
Description
Technical field
The utility model relates to a kind of air-conditioner outdoor unit protective circuit, the protective circuit of the anti-high wind of particularly a kind of air-conditioner outdoor unit.
Background technology
DC frequency converting air-conditioner is the main developing direction of domestic air conditioning, along with brushless DC motor The Application of Technology and development, no matter DC frequency converting air-conditioner on performance, or all improves on the cost performance.Therefore, brshless DC motor is the important component part of DC frequency converting air-conditioner.Specific area such as on coastal, island often has high wind natural climates such as tropical storm, typhoon.The dc fan of being made up of direct current machine, fan blade is when air-conditioner outdoor unit quits work; Usually can reverse because of being blown by high wind; Thereby cause that dc fan oppositely generates electricity; And present employed DC frequency converting air-conditioner does not generally all have to be provided with the protective circuit that prevents reverse current, and the components and parts of air-conditioner control system blow down at high wind and burnt easily.Referring to Fig. 1, Fig. 1 is the state of the common circuit of direct current varied-frequency air conditioner off-premises station when oppositely generating electricity.Dc fan A during backward rotation, will form reverse generating under the high wind environment, the reverse current that is produced flows directly into the air-conditioner control system circuit (1) of next stage under the situation that is having no the protection device to intercept.Under the situation that electric current increases sharply suddenly, the relevant components and parts of air-conditioner control system (1) are easy to burnt.
Summary of the invention
In order to address the above problem; The utility model provide a kind of simple in structure, reliable, cost is low; Can effectively absorb the electric current quilt that the reverse generating of dc fan is produced, thereby make the protective circuit of the anti-high wind of the air-conditioner outdoor unit that be effectively protected of air-conditioner control system circuit under abominable high wind environment of DC frequency-changing.
The technical scheme of the utility model is: the protective circuit of the anti-high wind of a kind of air-conditioner outdoor unit; It is characterized in that comprising that reverse isolation circuit and reverse current absorb circuit; Said reverse isolation circuit is connected between the direct-flow positive pole+P of input IN+ and air-conditioner control system circuit of dc fan A, and the two ends that said reverse current absorbs circuit are attempted by between the input IN+ and output IN-of dc fan A.
Said reverse isolation circuit comprises diode, and said reverse current absorbs circuit and comprises electrochemical capacitor and resistance, and the anode of wherein said diode is electrically connected with the direct-flow positive pole+P of air-conditioner control system circuit; The cathodic electricity of one end of said resistance and the positive terminal of electrochemical capacitor and diode links together and is electrically connected the input IN+ of dc fan A, the other end of resistance and the negative pole end of electrochemical capacitor is electrically connected and be electrically connected the direct current negative pole N-of air-conditioner control system circuit respectively and the output IN-of dc fan A.
The utility model advantage compared with prior art is: can effectively absorb the electric current quilt that the reverse generating of dc fan is produced; Thereby make air-conditioner control system circuit being effectively protected under abominable high wind environment of DC frequency-changing, reach and reduce the air-conditioner repair rate and prolong the air conditioner purpose in useful life; It is simple in structure, reliable, cost is low.
Description of drawings
Fig. 1 is the state diagram of prior art circuits when oppositely generating electricity;
Fig. 2 is the circuit theory diagrams of the utility model;
Fig. 3 is the circuit diagram that the utility model is electrically connected with air-conditioner control system;
Fig. 4 is the operation principle of this Fig. 3 when dc fan oppositely generates electricity.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further detailed explanation.
As shown in Figure 2; The protective circuit of the anti-high wind of a kind of air-conditioner outdoor unit; The utility model characteristics are to comprise that reverse isolation circuit 3 and reverse current absorb circuit 2; Said reverse isolation circuit 3 is connected between the direct-flow positive pole+P of input IN+ and air-conditioner control system circuit 1 of dc fan A, and the two ends that said reverse current absorbs circuit 2 are attempted by between the input IN+ and output IN-of dc fan A.During work, when meeting high wind, reverse isolation circuit 3 can be isolated air-conditioner control system circuit 1 with dc fan A, and this moment, reverse current absorbed the electric current that is produced when circuit 2 can effectively absorb dc fan A counter-rotating.When not having high wind, air-conditioner control system circuit 1 can be input to dc fan A with direct current.
In the present embodiment, said reverse isolation circuit 3 comprises diode D1, and reverse current absorbs circuit 2 and comprises electrochemical capacitor E1 and resistance R 1, and the anode of wherein said diode D1 is electrically connected with the direct-flow positive pole+P of air-conditioner control system circuit 1; The cathodic electricity of one end of said resistance R 1 and the positive terminal of electrochemical capacitor E1 and diode D1 links together and is electrically connected the input IN+ of dc fan A, and the negative pole end of the other end of resistance R 1 and electrochemical capacitor E1 is electrically connected and is electrically connected the direct current negative pole N-of air-conditioner control system circuit 1 and the output IN-of dc fan A respectively.
As shown in Figure 3; Direct-flow positive pole+the P of air-conditioner control system 1 and direct current negative pole N-are electrically connected the anode of diode D1 and the negative pole end of electrochemical capacitor E1 respectively, and the input IN+ of the dc fan A of air-conditioner outdoor unit and output IN-are electrically connected positive terminal and the negative pole end of electrochemical capacitor E1 respectively.
As shown in Figure 4; Its operation principle does, when direct current machine during backward rotation, will form reverse generating under the high wind environment; The reverse current that is produced can oppositely be ended by diode D1; Making electric current absorbed consumption by electrochemical capacitor E1 and resistance R 1, can not flow through diode D1, is air-conditioner control system 1 thereby protected the next stage circuit.
All these professional persons pass through circuit structure conversion or pro forma conversion to the utility model, but do not have substantial innovation all to belong to the protection range of the utility model.
Claims (2)
1. the protective circuit of the anti-high wind of an air-conditioner outdoor unit; It is characterized in that comprising that reverse isolation circuit (3) and reverse current absorb circuit (2); Said reverse isolation circuit (3) is connected between the direct-flow positive pole+P of input IN+ and air-conditioner control system circuit (1) of dc fan A, and the two ends that said reverse current absorbs circuit (2) are attempted by between the input IN+ and output IN-of dc fan A.
2. the protective circuit of the anti-high wind of air-conditioner outdoor unit according to claim 1; It is characterized in that comprising that said reverse isolation circuit (3) comprises diode (D1); Said reverse current absorbs circuit (2) and comprises electrochemical capacitor (E1) and resistance (R1), and the anode of wherein said diode (D1) is electrically connected with the direct-flow positive pole+P of air-conditioner control system circuit (1); The cathodic electricity of the positive terminal of one end of said resistance (R1) and electrochemical capacitor (E1) and diode (D1) links together and is electrically connected the input IN+ of dc fan A, and the negative pole end of the other end of resistance (R1) and electrochemical capacitor (E1) is electrically connected and is electrically connected the direct current negative pole N-of air-conditioner control system circuit (1) and the output IN-of dc fan A respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201437252U CN202524079U (en) | 2012-04-09 | 2012-04-09 | Strong-wind resistant protective circuit for air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201437252U CN202524079U (en) | 2012-04-09 | 2012-04-09 | Strong-wind resistant protective circuit for air conditioner outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202524079U true CN202524079U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201437252U Expired - Lifetime CN202524079U (en) | 2012-04-09 | 2012-04-09 | Strong-wind resistant protective circuit for air conditioner outdoor unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN202524079U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505932A (en) * | 2016-11-22 | 2017-03-15 | 广东美的暖通设备有限公司 | The typhoon power protecting circuit of outdoor fan, off-premises station and air-conditioner in air-conditioner |
| CN106933158A (en) * | 2017-04-21 | 2017-07-07 | 河南紫光物联技术有限公司 | The fire switch of intelligence zero |
| CN109861198A (en) * | 2019-03-08 | 2019-06-07 | 广东美的制冷设备有限公司 | Fan power circuit, fan assembly and air conditioner |
| CN112032088A (en) * | 2019-06-04 | 2020-12-04 | 安徽中家智康科技有限公司 | Device and method for realizing reverse power generation of air conditioner external fan by controlling rotation of fan |
-
2012
- 2012-04-09 CN CN2012201437252U patent/CN202524079U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505932A (en) * | 2016-11-22 | 2017-03-15 | 广东美的暖通设备有限公司 | The typhoon power protecting circuit of outdoor fan, off-premises station and air-conditioner in air-conditioner |
| CN106933158A (en) * | 2017-04-21 | 2017-07-07 | 河南紫光物联技术有限公司 | The fire switch of intelligence zero |
| CN109861198A (en) * | 2019-03-08 | 2019-06-07 | 广东美的制冷设备有限公司 | Fan power circuit, fan assembly and air conditioner |
| CN112032088A (en) * | 2019-06-04 | 2020-12-04 | 安徽中家智康科技有限公司 | Device and method for realizing reverse power generation of air conditioner external fan by controlling rotation of fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131202 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: Midea Group Co., Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |