CN202326145U - Protection circuit of compressor and air conditioner - Google Patents
Protection circuit of compressor and air conditioner Download PDFInfo
- Publication number
- CN202326145U CN202326145U CN2011204856978U CN201120485697U CN202326145U CN 202326145 U CN202326145 U CN 202326145U CN 2011204856978 U CN2011204856978 U CN 2011204856978U CN 201120485697 U CN201120485697 U CN 201120485697U CN 202326145 U CN202326145 U CN 202326145U
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- contactor
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Abstract
The utility model discloses a protection circuit of a compressor and an air conditioner. The protection circuit of the compressor comprises an air switch, a contactor, a detection circuit and a control circuit, wherein the air switch is connected with a power supply of the compressor; the contactor is connected between the air switch and the compressor; the detection circuit is connected with the contactor and is used for detecting whether adhesion occurs on the contactor or not; and the control circuit is respectively connected with the detection circuit and the air switch, and is used for controlling the air switch to be switched off so as to disconnect the power supply from the compressor when the detection circuit detects that adhesion occurs on the contactor. Through the protection circuit, the problem that: in the prior art, the compressor is easy to burn out when a contact terminal of the contactor cannot be disconnected, is solved, so that the effect of protecting the compressor is achieved.
Description
Technical field
The utility model relates to circuit field, in particular to a kind of protective circuit and air conditioner of compressor.
Background technique
In the air conditioner industry; If probe of contactor adhesion when unit operation; Work as compressor emergency shutdown, the probe of contactor of adhesion can't break off, and compressor cold oil battery valve and condenser cooling water etc. are all out of service at this moment; Compressor is compelled energising forced service under the state that probe of contactor can't break off, and tends to cause burn out compressor.
To in the correlation technique under the state that probe of contactor can't break off, the problem of compressor displacement easy burn-out does not propose effective solution at present as yet.
The model utility content
The main purpose of the utility model is to provide a kind of protective circuit and air conditioner of compressor, to solve in the existing technology under the state that probe of contactor can't break off the problem of compressor displacement easy burn-out.
To achieve these goals, according to an aspect of the utility model, a kind of protective circuit of compressor is provided, the protective circuit of this compressor comprises: air-break switch is connected with the power supply of compressor; Contactor is connected between air-break switch and the compressor; Testing circuit is connected with contactor, is used to detect contactor and adhesion whether occurs; And control circuit, be connected respectively with air-break switch with testing circuit, be used for when testing circuit detects contactor and adhesion occurs, the control air switch breaks off to break off being connected of power supply and compressor.
Further, testing circuit comprises: first testing circuit, first testing circuit comprise that first detects the subcircuit and the second detection subcircuit; Wherein, first detects subcircuit is connected with the coil of contactor, is used to detect the coil voltage of contactor; Second detects subcircuit, is connected with the contact of contactor, is used to detect the contact voltage of contactor; Second testing circuit; Detect subcircuit with the first detection subcircuit and second and be connected respectively, be used for judging according to first voltage and second voltage whether contactor adhesion occurs, wherein; First voltage is the detected coil voltage of the first detection subcircuit, and second voltage is the detected contact voltage of the second detection subcircuit.
Further, testing circuit comprises: first testing circuit, first testing circuit comprise that first detects the subcircuit and the second detection subcircuit; Wherein, First detects subcircuit is connected with the coil of contactor, is used to detect the coil voltage of contactor, and second detects subcircuit; Be connected with the contact of contactor, be used to detect the contact voltage of contactor; And second testing circuit, detect subcircuit and second and detect subcircuit and be connected respectively with first, be used for when one of first voltage and second voltage are zero, judge that adhesion appears in contactor; And be zero or when all non-vanishing at first voltage and second voltage, and judge that adhesion does not appear in contactor, wherein, first voltage is first to detect the detected coil voltage of subcircuit, second voltage is second to detect the detected contact voltage of subcircuit.
Further, air-break switch comprises: shunt release, wherein, control circuit is connected with shunt release, control circuit is used for when testing circuit detects contactor and adhesion occurs, output control voltage to shunt release so that air-break switch break off.
Further, protective circuit also comprises: warning circuit, be connected with testing circuit, and be used for detecting and report to the police when adhesion appears in contactor at testing circuit.
To achieve these goals, according to the utility model on the other hand, a kind of air conditioner is provided, this air conditioner comprises the protective circuit of any compressor that the utility model foregoing is provided.
Through the utility model, adopt the protective circuit of the compressor that comprises following structure: air-break switch is connected with the power supply of compressor; Contactor is connected between air-break switch and the compressor; Testing circuit is connected with contactor, is used to detect contactor and adhesion whether occurs; And control circuit; Be connected respectively with air-break switch with testing circuit; Be used for when testing circuit detects contactor and adhesion occurs, the control air switch breaks off breaking off being connected of power supply and compressor, and the control air-break switch breaks off being connected with disconnection power supply and compressor when detecting contactor and adhesion occurs through testing circuit; Avoid compressor compelled energising forced service under this state; Solved in the existing technology under the state that probe of contactor can't break off, the problem of compressor displacement easy burn-out, and then reached the effect of protection compressor.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the schematic representation according to the utility model first embodiment's protective circuit;
Fig. 2 is the schematic representation according to the utility model second embodiment's protective circuit;
Fig. 3 is the circuit diagram according to the utility model embodiment's protective circuit;
Fig. 4 is the schematic block diagram that carries out compressor protection according to the utility model first embodiment's protective circuit;
Fig. 5 is the schematic block diagram that carries out compressor protection according to the utility model second embodiment's protective circuit;
Fig. 6 is the schematic block diagram that carries out compressor protection according to the utility model the 3rd embodiment's protective circuit; And
Fig. 7 is the schematic block diagram that carries out compressor protection according to the utility model the 4th embodiment's protective circuit.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Fig. 1 is the schematic representation according to the utility model first embodiment's protective circuit, and is as shown in Figure 1, and the utility model first embodiment's protective circuit comprises: air-break switch 20 is connected with the power supply 10 of compressor; Contactor 30 is connected between air-break switch 20 and the compressor 40; Testing circuit 50 is connected with contactor 30, is used to detect contactor 30 and adhesion whether occurs; And control circuit 60, be connected respectively with air-break switch 20 with testing circuit 50, be used for when testing circuit 50 detects contactor 30 and adhesion occurs, control air switch 20 breaks off to break off being connected of power supply 10 and compressor 40.
The control air-break switch breaks off to break off being connected of power supply and compressor when detecting contactor and adhesion occurs through testing circuit; Avoid compressor compelled energising forced service under this state; Solved in the existing technology under the state that probe of contactor can't break off; The problem of compressor displacement easy burn-out, and then reached the effect of protecting compressor.
Fig. 2 is the schematic representation according to the utility model second embodiment's protective circuit, and is as shown in Figure 2, and the utility model second embodiment's protective circuit comprises: air-break switch 20 is connected with the power supply 10 of compressor; Contactor 30 is connected between air-break switch 20 and the compressor 40; Testing circuit 50 is connected with contactor 30, is used to detect contactor 30 and adhesion whether occurs; And control circuit 60, be connected respectively with air-break switch 20 with testing circuit 50, be used for when testing circuit 50 detects contactor 30 and adhesion occurs; Control air switch 20 breaks off to break off being connected of power supply 10 and compressor 40, and wherein, testing circuit 50 comprises: first testing circuit 51; First testing circuit 51 comprises that first detects the subcircuit 511 and the second detection subcircuit 512, and wherein, first detects subcircuit 511 is connected with the coil of contactor 30; Be used to detect the coil voltage of contactor 30, second detects subcircuit 512 is connected with the contact of contactor, is used to detect the contact voltage of contactor 30; Second testing circuit 52; Detect subcircuit 512 with the first detection subcircuit 511 and second and be connected respectively, be used for judging according to first voltage and second voltage whether contactor 30 adhesion occurs, wherein; First voltage is the first detection subcircuit, 511 detected coil voltages, and second voltage is the second detection subcircuit, 512 detected contact voltages.
Detect the coil voltage that subcircuit detects contactor through first; Obtain first voltage; Detect the contact voltage that subcircuit detects contactor through second simultaneously; Obtain second voltage, and, reached and monitored the effect whether contactor is in the adhesion state through judging according to first voltage and second voltage whether contactor adhesion occurs with second testing circuit that the first detection subcircuit and the second detection subcircuit are connected respectively.
Fig. 3 is the circuit diagram according to the utility model embodiment's protective circuit; As shown in Figure 3; In the utility model embodiment's protective circuit; The PRE1 end of testing circuit is connected to coil live wire wiring place of contactor 30; Judge that through the detection of voltage contactor should be in closure and still break off the shape body, and PRE2, BE1_1 and BE1_2 end are connected to the voltage of the contact (L1, L2, L3, T1, T2 and T3) of contactor 30 through the detection compressor loop, and then judge whether the virtual condition of contactor is consistent with need state; X3 end is connected to air-break switch 20, and when testing circuit detected contactor 30 and adhesion occurs, through X3 end output control voltage, control air switch 20 broke off with what break off power supply and compressor 40 and is connected the power supply of X2, X4 and X5 connection detection circuit.
Wherein, Air-break switch 20 comprises shunt release, and control circuit is connected with shunt release, and control circuit is used for when testing circuit detects contactor and adhesion occurs; Output control voltage to shunt release is so that the air-break switch disconnection; Protective circuit also comprises: warning circuit, be connected with testing circuit, and be used for detecting and report to the police when adhesion appears in contactor at testing circuit.
Testing circuit judges that according to following situation whether contactor adhesion occurs, comprising:
Situation one: coil Check point and contact Check point have detected 220V voltage simultaneously, and the judgement unit is normal operating condition, and is as shown in Figure 4, are the schematic block diagrams that carries out compressor protection according to the utility model first embodiment's protective circuit.
Situation two: the coil Check point has 220V voltage; Contact Check point no-voltage; The judgement unit is an abnormal state, and testing circuit output 220V voltage is to the shunt release of air-break switch, through the air-break switch deenergization; As shown in Figure 5, be the schematic block diagram that carries out compressor protection according to the utility model second embodiment's protective circuit.
Situation three: coil Check point no-voltage; The contact Check point has 220V voltage; The judgement unit is an abnormal state, and protector output 220V voltage is to the shunt release of air-break switch, through the air-break switch deenergization; As shown in Figure 6, be the schematic block diagram that carries out compressor protection according to the utility model the 3rd embodiment's protective circuit.
Situation four: coil Check point and contact Check point detect no-voltage simultaneously, judge that unit is the normal shutdown state, and be as shown in Figure 7, is the schematic block diagram that carries out compressor protection according to the utility model the 4th embodiment's protective circuit.
Through the voltage detecting of compressor protection circuit, and combine the coil of detection contactor whether to switch on, judge whether contactor exists adhesion fault compressor loop (loop behind the contactor); If there is an adhesion fault, contactor adhesion protector output 220V voltage leaves shunt opening to the sky on the general power and takes off on the mouthpart, and sky is opened the moment cutoff circuit and played the effect of protection compressor; When unit operation; Through the detection of testing circuit in the protective circuit, whether the monitoring contactor is in the adhesion state, if contactor is in the adhesion state; The sky of ability moment deenergization is opened, and compressor is played a protective role.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. the protective circuit of a compressor is characterized in that, comprising:
Air-break switch is connected with the power supply of compressor;
Contactor is connected between said air-break switch and the said compressor;
Testing circuit is connected with said contactor, is used to detect said contactor and adhesion whether occurs; And
Control circuit is connected respectively with said air-break switch with said testing circuit, is used for when said testing circuit detects said contactor and adhesion occurs, controls said air-break switch and breaks off to break off being connected of said power supply and said compressor.
2. protective circuit according to claim 1 is characterized in that, said testing circuit comprises:
First testing circuit; First testing circuit comprises that first detects the subcircuit and the second detection subcircuit, and wherein, said first detects subcircuit is connected with the coil of said contactor; Be used to detect the coil voltage of said contactor; Said second detects subcircuit, is connected with the contact of said contactor, is used to detect the contact voltage of said contactor; And
Second testing circuit; Detecting subcircuit with the said first detection subcircuit and said second is connected respectively; Be used for judging according to first voltage and second voltage whether said contactor adhesion occurs; Wherein, said first voltage is the detected coil voltage of the said first detection subcircuit, and said second voltage is the detected contact voltage of the said second detection subcircuit.
3. protective circuit according to claim 1 is characterized in that, said testing circuit comprises:
First testing circuit; First testing circuit comprises that first detects the subcircuit and the second detection subcircuit, and wherein, said first detects subcircuit is connected with the coil of said contactor; Be used to detect the coil voltage of said contactor; Said second detects subcircuit, is connected with the contact of said contactor, is used to detect the contact voltage of said contactor; And
Second testing circuit detects subcircuit with said first and the said second detection subcircuit is connected respectively, is used for when one of said first voltage and said second voltage are zero, judging that adhesion appears in said contactor; And be zero or when all non-vanishing at said first voltage and said second voltage; Judge that adhesion does not appear in said contactor; Wherein, Said first voltage is the detected coil voltage of the said first detection subcircuit, and said second voltage is the detected contact voltage of the said second detection subcircuit.
4. protective circuit according to claim 1; It is characterized in that; Said air-break switch comprises: shunt release, and wherein, said control circuit is connected with said shunt release; Said control circuit is used for when said testing circuit detects said contactor and adhesion occurs, output control voltage to said shunt release so that said air-break switch break off.
5. protective circuit according to claim 1 is characterized in that, said protective circuit also comprises: warning circuit, be connected with said testing circuit, and be used for detecting and report to the police when adhesion appears in said contactor at said testing circuit.
6. an air conditioner is characterized in that, also comprises the protective circuit of each described compressor in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204856978U CN202326145U (en) | 2011-11-28 | 2011-11-28 | Protection circuit of compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204856978U CN202326145U (en) | 2011-11-28 | 2011-11-28 | Protection circuit of compressor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326145U true CN202326145U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204856978U Expired - Lifetime CN202326145U (en) | 2011-11-28 | 2011-11-28 | Protection circuit of compressor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326145U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751695A (en) * | 2012-07-20 | 2012-10-24 | 天津百利机电控股集团有限公司研究院 | Alarming protection device and alarming protection method for alternating-current contactor main contact adhesion |
| CN102867686A (en) * | 2012-09-27 | 2013-01-09 | 广东易事特电源股份有限公司 | Circuit for preventing adhesion of contact point of relay of discharge circuit of UPS (uninterruptible power supply) storage battery |
| CN105332902A (en) * | 2015-12-01 | 2016-02-17 | 珠海格力电器股份有限公司 | Compressor relay adhesion protection method, compressor relay adhesion protection device and air conditioner |
| CN105485867A (en) * | 2015-12-18 | 2016-04-13 | 珠海格力电器股份有限公司 | Control method and device for air conditioner and circuit |
| CN105650328A (en) * | 2016-01-27 | 2016-06-08 | 珠海格力电器股份有限公司 | Drive signal anti-collision protection device, air conditioner system and control method |
| CN106019065A (en) * | 2016-05-04 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioner compressor contactor adhesion detection method, system and device and air conditioner |
| CN106440278A (en) * | 2016-10-21 | 2017-02-22 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner electrical heating protection method and device |
| CN107869455A (en) * | 2017-11-15 | 2018-04-03 | 荏原冷热系统（中国）有限公司 | A kind of control method and system for preventing compressor damage |
| CN109975694A (en) * | 2017-12-27 | 2019-07-05 | 株洲中车时代电气股份有限公司 | A kind of relay status monitoring system |
-
2011
- 2011-11-28 CN CN2011204856978U patent/CN202326145U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751695B (en) * | 2012-07-20 | 2015-09-16 | 天津百利机电控股集团有限公司研究院 | AC contactor main contact adhesion alarm protecting apparatus and method |
| CN102751695A (en) * | 2012-07-20 | 2012-10-24 | 天津百利机电控股集团有限公司研究院 | Alarming protection device and alarming protection method for alternating-current contactor main contact adhesion |
| CN102867686A (en) * | 2012-09-27 | 2013-01-09 | 广东易事特电源股份有限公司 | Circuit for preventing adhesion of contact point of relay of discharge circuit of UPS (uninterruptible power supply) storage battery |
| CN102867686B (en) * | 2012-09-27 | 2015-08-19 | 广东易事特电源股份有限公司 | The circuit of the anti-relay contact adhesion of a kind of UPS battery discharging circuit |
| CN105332902A (en) * | 2015-12-01 | 2016-02-17 | 珠海格力电器股份有限公司 | Compressor relay adhesion protection method, compressor relay adhesion protection device and air conditioner |
| CN105485867B (en) * | 2015-12-18 | 2018-12-07 | 珠海格力电器股份有限公司 | Control method, device and the circuit of air-conditioning |
| CN105485867A (en) * | 2015-12-18 | 2016-04-13 | 珠海格力电器股份有限公司 | Control method and device for air conditioner and circuit |
| CN105650328A (en) * | 2016-01-27 | 2016-06-08 | 珠海格力电器股份有限公司 | Drive signal anti-collision protection device, air conditioner system and control method |
| CN106019065A (en) * | 2016-05-04 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioner compressor contactor adhesion detection method, system and device and air conditioner |
| CN106440278A (en) * | 2016-10-21 | 2017-02-22 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner electrical heating protection method and device |
| CN106440278B (en) * | 2016-10-21 | 2019-02-26 | 珠海格力电器股份有限公司 | Air-conditioning and air conditioner electric heating protection method, device |
| CN107869455A (en) * | 2017-11-15 | 2018-04-03 | 荏原冷热系统（中国）有限公司 | A kind of control method and system for preventing compressor damage |
| CN109975694A (en) * | 2017-12-27 | 2019-07-05 | 株洲中车时代电气股份有限公司 | A kind of relay status monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |