CN201486834U - Assistant starting and protecting device of single-phase compressor - Google Patents
Assistant starting and protecting device of single-phase compressor Download PDFInfo
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- CN201486834U CN201486834U CN2009202030684U CN200920203068U CN201486834U CN 201486834 U CN201486834 U CN 201486834U CN 2009202030684 U CN2009202030684 U CN 2009202030684U CN 200920203068 U CN200920203068 U CN 200920203068U CN 201486834 U CN201486834 U CN 201486834U
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Abstract
The utility model relates to an assistant starting and protecting device of a single-phase compressor. The assistant starting and protecting device comprises a current detecting unit, a temperature detecting unit, an A/D converter, a processing unit, a relay and an alarming device, wherein the relay comprises a capacitance relay and a compressor relay; the temperature detecting unit refers to a temperature detector for detecting the exhaust side temperature of the compressor; the current detecting unit refers to a current detector for detecting the current of the common terminal of a single-phase motor of the compressor; the acquired temperature signal and the current signal of the common terminal of the compressor are transmitted to the processing unit by the A/D converter; and after calculation, the processing unit sends an order to control the on and off of the relay. The assistant starting and protecting device has the advantages that the protection is complete, the parameter setting is convenient, a plurality of compressors with different capacities can be protected together, and the cost and the management expenses can be lowered. The assistant starting and protecting device can be used in an independent module way and can also be used by being attached in a control module of the compressor; and the assistant starting and protecting device can also be used on other facilities with the single-phase being the power.
Description
Technical field:
The utility model relates to the single-phase compressor technical field, relates in particular to single-phase compressor auxiliary starter and protective gear.
Background technique:
Traditional single-phase compressor all needs to be provided with auxiliary starting device and protective gear.Because the single-phase compressor starting torque is lower, the auxiliary starter mode of single-phase compressor use at present mainly contains following 3 kinds:
1, reduces compressor needed starting torque in starting process by mechanical structure.The deficiency of this kind mode is: need to increase the quality of fit between compressor part, and to component processing required precision height, to the quality control requirement height, the cost of production height.
2, use relay series connection starting capacitance mode.This mode can improve the starting torque of motor greatly, its deficiency is: owing to be non-linear relation between acting characteristic of starter relay own and the control signal, and the amount of elasticity of also too much dependence mechanical structure guarantees the reliability of starting on the structure, and therefore, reliability is difficult to guarantee.
3, use the mode of thermistor original paper PTC series connection starting capacitance.The deficiency of this mode is: thermistor itself is a resistive element, can produce very big heat energy in starting process, and temperature is increased, and increases sharply the starting capacitance disconnecting circuit to guarantee its resistance, but because resistance is big, can make the starting effect variation.
The protective gear of traditional single-phase compressor is a lot, mainly contains the electric machine built-in protector, the delivery temperature protector, and high low pressure (suction and discharge pressure) switch is crossed low-voltage protection etc.Especially for the electric machine built-in protector, it can only be protected motor itself, can not protect compressor at no refrigeration agent or the running when lacking refrigeration agent.General single-phase compressor all needs several protective gears to be used in combination; its deficiency is the user cost that has increased compressor; and; because the protective gear that uses is many and dispersion; it is complicated that circuit is connected; the reliability of compressor also is difficult to be guaranteed, and can bring great inconvenience to the user simultaneously.
Summary of the invention:
The purpose of this utility model provides a kind of single-phase compressor auxiliary starter and protective gear, and this device has single-phase compressor auxiliary starter and omnibearing protection function.
For achieving the above object, the technological scheme that the utility model adopted is: a kind of single-phase compressor auxiliary starter and protective gear, comprise current detecting unit, temperature detecting unit, A/D converter, processing unit, relay and alarm, relay comprises capacity relay and compressor relay, relay cut-off cut-offfing and the start-stop of compressor of control compressor start electric capacity, current detecting unit links to each other with A/D converter by signaling line with temperature detecting unit, A/D converter links to each other with processing unit by signaling line, processing unit is connected with alarm with relay by signaling line, temperature detecting unit is the Temperature Detector that detects compressor air-discharging side temperature, Temperature Detector is gathered the temperature signal of compressor air-discharging in real time, processing unit is single-chip microcomputer or programmable industrial control unit (ICU), processing unit operation auxiliary starter and defence program, auxiliary starter and defence program comprise temperature control program and Current Control program, temperature control program comprises the protection temperature value and the comparison operation program of setting, the Current Control program comprises auxiliary starter and the protective current value and the comparison operation program of setting, it is characterized in that: the auxiliary starter of the setting in the described Current Control program and protective current value are the current values of single-phase compressor common port, wherein, the auxiliary starter current value comprises the procedure triggers current value, starting capacitance turn-off current value and unusual big electric current alarming value, protective current value comprise the normal operating current instant protective current value of suddenling change, maximum sustainable revolution electric current value, the lower current limit protection value and the sectionalised protection current value of prescribing a time limit; Described current detecting unit is provided in a side of the current probe of single-phase compressor common port, current probe is gathered the current signal of single-phase compressor common port in real time, and current signal is transferred to processing unit by A/D converter, processing unit is through sending the folding and the alarm equipment alarm of command control relay after relatively calculating.
A kind of single-phase compressor auxiliary starter described in the utility model and protective gear is characterized in that: described current probe is current transformer or current measuring element.
A kind of single-phase compressor auxiliary starter described in the utility model and protective gear is characterized in that: described Temperature Detector is any one in digital temperature sensor, thermocouple and the resistance type.
A kind of single-phase compressor auxiliary starter described in the utility model and protective gear is characterized in that: the auxiliary starter of the single-phase compressor common port of the setting in the described current protection program and every current value of protection are the current values of determining according to single-phase compressor common port electric current change curve.
A kind of single-phase compressor auxiliary starter described in the utility model and protective gear, it is characterized in that: in the auxiliary starter of the single-phase compressor common port of the setting in the described current protection program and the every current value of protection, the procedure triggers current value is the current value of the 80%-90% of the Peak current of starting single-phase compressor common port under the full voltage, and the procedure triggers current value is to make program continue the current value of operation; Current value when starting capacitance turn-off current value is single-phase compressor 70%-80% synchronous speed, the current value that the control starting capacitance disconnected and inserts when starting capacitance turn-off current value was compressor start; But normal operating current suddenlys change instant protective current value be with in the maximum sustainable revolution electric current test method test process according to the upper bound current value of safe operation time of the time selection of reporting to the police, the normal operating current instant protective current value of suddenling change is when occurring electric current in the compressor operating and surpass maximum sustainable revolution electric current value, but the lowest high-current value in the time of safe operation; The sectionalised protection current value is with maximum sustainable revolution electric current test method in limited time, set according to the time of fire alarming that different electric currents are reached down, this sets and divides and should divide voluntarily according to actual conditions, main purpose is to prevent compressor frequent startup-shutdown under high load, in limited time the sectionalised protection current value greater than maximum sustainability revolution electric current less than the normal operating current instant protective current value of suddenling change; Maximum sustainable revolution electric current value is the current value under the voltage before compressor is reported to the police when falling the voltage test method test under the excess load condition, and maximum sustainable revolution electric current value is the current value that guarantees under the compressor maximum load condition that compressor can continuous running; Lower current limit protection value is the current value of compressor under minimum load, and lower current limit protection value is the minimum current value of compressor safe operation; Unusual big electric current alarming value is the starting current value under 120% voltage, the minimum current value of abnormal conditions warning and control compressor start-stop when being compressor start.
Principle of the present utility model is:
The starting capacitance both end voltage of single-phase compressor, the main winding both end voltage, auxiliary winding both end voltage, and main winding (R), auxiliary winding (S), the electric current of common port (C) all changes in single-phase compressor starting and operation process:
1, running electric capacity both end voltage
The electric capacity both end voltage is the variation situation that descends and afterwards rise earlier along with the rising of compressor rotary speed, and this parameter is not suitable for as single-phase compressor operating condition critical parameter.
2, main winding both end voltage
The main winding both end voltage does not have significant change in the single-phase compressor operation process, only can cause voltage drop, this parameter to be not suitable for as single-phase compressor operating condition critical parameter because of net capacity is little in starting process yet.
3, auxiliary winding both end voltage
Auxiliary winding both end voltage along with the rising of compressor rotary speed, is continuous increase situation, and in the process from start to turning round, auxiliary winding both end voltage changes evenly, and vary within wide limits, suitable judge parameter.But auxiliary winding both end voltage is a voltage signal, and is very big to the interference of voltage signal in the single-phase compressor system, if as critical parameter, is easy to cause misoperation because of interference.Itself be again the forceful electric power signal simultaneously, in the circuit to the volume requirement compactness, reliability be cannot say for sure to demonstrate,prove.Therefore also be not suitable for as single-phase compressor operating condition critical parameter.
4, main winding R phase current
Main winding R phase current is along with the rising of motor speed, Changing Pattern is to reduce earlier afterwards to increase, though just nonlinear change just occurring to unloaded state than light condition, but the judgement for The whole control still can bring adverse factors, therefore is not suitable for as single-phase compressor operating condition critical parameter.
5, auxiliary winding S phase current
Auxiliary winding S phase current is along with the Changing Pattern that motor speed rises is to reduce earlier afterwards to increase, and its electric current is less, for signal resolution bigger influence is arranged, and therefore is not suitable for as single-phase compressor operating condition critical parameter.
6, common port (C phase) electric current
Common port (C phase) electric current is along with motor speed rises, except that the moment of starting, the electric current of common port is along with the rising of compressor rotary speed is constantly reducing, and the current value amplitude of variation is bigger, differentiate easily, therefore suitable to single-phase compressor operating condition critical parameter.
The utility model is exactly to control the starting of single-phase compressor as parameter and realize protection to compressor with the electric current of single-phase compressor common port.Detection unit carries out the sampling of electric current and temperature signal, the signal of gathering is transferred to the A/D converting unit, the A/D converting unit is transferred to processing control unit after signal conversion is become digital signal, after processing control unit is analyzed contrast according to operation program to signal, relay and alarm to actuator send instruction, relay according to the instruction that processing control unit sends open, disconnected conversion, the start-stop of the opening of control compressor start electric capacity, disconnected and compressor.
Every current parameters of the present utility model is the locked rotor current at motor, selectes on the basis of the T-N curve test result of performance and motor.
1 maximum sustainable revolution electric current value
Test method generally is that compressor is under the excess load condition; voltage tester falls; and set a delivery temperature protection value and a motor temperature protection value this moment; after the stable operation of compressor full voltage; reduced 3V voltage in per 4 minutes; up to warning occurring, then the public outage stream under the previous voltage of reporting to the police is maximum sustainable revolution electric current.(generally this value can be reduced in the practical application) to increase the reliability of compressor.
2 procedure triggers current values
Below starting current, generally select the 80%-90% of starting current under the full voltage for use.
3 starting capacitance turn-off current values
This value is generally chosen the electric current under the 70%-80% synchronous speed less than the procedure triggers electric current.
4 sectionalised protection current values (time is determined) in limited time
These current values can use the test method of maximum sustainable revolution electric current to test working time, put in order to be summarised under the different situations that are higher than maximum sustainable revolution electric current in test process, and the time that compressor is reported to the police is to select safe working time.
5 instant protective current values
Generally choose protective current zone CLV ceiling limit value in limited time.
6 lower current limit protection values
Generally determine at the electric current under the minimum load by the test compression machine.
7 unusual big electric current alarming values
Generally choose the starting current value under 120% voltage.
In the compressor start process, when motor speed reaches 75% synchronous speed, the success of general estimation compressor start.And after motor speed reached 80% synchronous speed, the electric capacity both end voltage can be quickened to rise.According to this rule between motor speed and the starting capacitance in the compressor start process, choose the parameter of the common port current value of motor speed when the 70%-80% synchronous speed as the starting capacitance cut-off signal.
Need to set the judgement of a time as starting failure in starting process, because when fail to start, it is very big that electric current can keep always, and long-time energising can cause burn-down of electric motor; Motor can produce very big electric current when running into insulation fault or cross the high input voltage starting, cause burn-down of electric motor.Therefore when starting,, then need to cut off immediately the compressor power supply, and after artificial affirmation fault, carry out hand reset and just allow to start once more in case detect unusual big electric current.
If start successfully then enter operating condition, for compressor, under different electric currents, be conditional its running time.Below the sustainable revolution electric current of maximum (MCC), more than the minimum running current, compressor can steady in a long-term turn round.If exceed maximum sustainable revolution electric current (MCC) or be lower than below the minimum running current; compressor limits running time (time limit) in different current ranges, can guarantee the safety of compressor, overstepping the time limit; then do to shut down to handle, and after shutting down a period of time, start once more.
Also occur in the compressor operation process and lack refrigeration agent or do not have refrigerant condition, when no refrigerant condition, compressor common port electric current is very little, and near no load current, this moment is by lower current limit protection value protection.When lacking refrigeration agent in the compressor, there will be two kinds of situations, and a kind of is that the system refrigerant charging amount is few, and this kind situation can be protected by delivery temperature.Second kind of situation is exactly entrained air in the system; cause the compressor compresses air; because the air heat-conducting effect is relatively poor; the condenser condenses effect also can variation; condensing pressure can't reduce; during this kind situation, compressor common port electric current is very big, suddenly change by normal operating current that instant protective current value is reported to the police this moment or in limited time the sectionalised protection current value report to the police and delivery temperature is reported to the police and carried out stoppage protection.
In the compressor operation process, also can occur inhaling, exhaust side is because the stifled state of the plug that a variety of causes causes, when the exhaust side plug block up, the common port electric current was very big, the use normal operating current instant protective current value alarm and protection that suddenlys change; When the suction side plug blocks up, by lower current limit protection value and the common protection of delivery temperature warning.
After defective mode appearred in compressor, major part needed the people to get rid of for carrying out fault.After bad error appearred several times in compressor continuously, this device had warning function.
The advantage of this single-phase compressor auxiliary starter and protective gear is:
Have simple in structurely, easy to use, cost is low, reliability height, the advantage of highly compatible.On function, can play the effect of protecting compressor fully.Simultaneously, parameter is set also very convenient, can mate within a short period of time to finish.Because the electric current of single-phase compressor is very big, can protect the different several compressor unifications of capacity fully, can significantly reduce match time and administration expenses.
In the time of in being used in air-conditioning system, can directly use the direct current in the air-conditioning system, if there is not the DC electrical source of being fit to, also can use the small-sized DC power-supply system, DC electrical source selects for use scope wide, and is easy to use.
This device is mainly used in single-phase compressor, also can use other with single phase motor as powered device on.System can be used as auxiliary starter and protective gear at CSR (capacitor start capacitor operating) type single-phase compressor; System can be used as protective gear at PSC (capacitor operating) type single-phase compressor.
In air-conditioning system, use, can also this device can be attached in the compressor control module, be used in combination with the air-conditioning control module with standalone module form work, both simple and cost is low.
Description of drawings:
The utility model has accompanying drawing 4 width of cloth, wherein
Fig. 1 is a single phase motor common port electric current change curve,
Fig. 2 is this single-phase compressor auxiliary starter and protective gear module frame chart,
Fig. 3 is this single-phase compressor auxiliary starter and protective gear wiring diagram,
Fig. 4 is this single-phase compressor auxiliary starter and protective gear control flow chart.
In the accompanying drawing, 1, current detecting unit, 2, temperature detecting unit, 3, A/D converter, 4, processing unit, 5, capacity relay, 6, compressor relay, 7, alarm.
Embodiment:
Below in conjunction with drawings and Examples to being described further for this single-phase compressor starting and protective gear:
The curve of Fig. 1 is embodiment's a single-phase compressor starting process medium speed (rpm) and common port electric current (I
c) change curve.Obtain the starting of this single-phase compressor and protective gear needed all current parameters in control procedure according to this curve.Comprise procedure triggers current value, starting capacitance turn-off current value, unusual big electric current alarming value, normal operating current suddenly change instant protective current value, maximum sustainable revolution electric current value and lower current limit protection value;
Embodiment is single-phase compressor starting and the protective gear that is applied in the air conditioner; as shown in Figures 2 and 3; be made of current detecting unit, temperature detecting unit, A/D converter, processing unit, relay and alarm, relay comprises capacity relay and compressor relay.Current detecting unit is a current transformer, and temperature detecting unit is a resistance temperature detector, and processing unit is a single-chip microcomputer, and A/D converter is 8 a A/D converter.
Embodiment's auxiliary starter and the protection flow process as shown in Figure 4:
After the air conditioner energising; system carries out comprehensive self check to equipment earlier; when checking that judgement is no abnormal; give the energising of this single-phase compressor auxiliary starter and protective gear power supply; the energising back keeps a period of time, by 5 adhesives of processing unit 4 control capacitance relays, starting capacitance is connected into circuit; after processing unit 4 is confirmed with the starting capacitance put in circuit, 6 adhesives of processing unit 4 control compressor relays.
Current detecting unit 1 is gathered the current temperature signal with temperature detecting unit 2 in energising, is converted into digital signal by A/D conversion unit 3, sends processing unit 4 to.
After compressor relay 6 adhesives, the adhesive of compressor power supply contactor, power to compressor, this moment, compressor entered starting state, when current detecting unit 1 detected electric current and reaches the procedure triggers current Ib, processing unit 4 internal programs entered next program, when electric current is reduced to starting capacitance when disconnecting capacitance current Id, capacity relay 5 disconnects, and makes the starting capacitance breaking circuit.In starting process, if the electric current that current detecting unit 1 detects is after reaching start-up restriction time T 1, electric current is successfully judged electric current I e (choosing maximum sustainability revolution electric current value) less than starting, and judges that then single-phase compressor starts successfully, and compressor enters normal operation.If the electric current that current detecting unit 1 detects is after reaching start-up restriction time T 1, electric current is still successfully judged electric current I e greater than starting, and then judges starting failure, disconnects compressor relay 6 this moment.After compressor shutdown, behind maintenance Tx dead time, starting once more.If the electric current that current detecting unit 1 detects disconnects capacitance current Id greater than starting capacitance at T1 after the time, then judge starting failure, disconnect capacity relay 5 and compressor relay 6 this moment, after compressor shutdown, behind maintenance Tx dead time, starting once more.If the electric current that current detecting unit 1 detects then disconnects capacity relay 5 and compressor relay 6 greater than unusual big electric current alarming value Im, do not restart, enter starting state once more after the wait hand reset.
After single-phase compressor entered normal operation, current detecting unit 1 and temperature detecting unit 2 continued image data, and the digital data transmission after will transforming by A/D converting unit 3 is to processing unit 4.
If the temperature that temperature detecting unit 2 measures reaches the protection value T of setting
0It is unusual to think that then compressor or air-conditioning occur; processing unit 4 turn-offs compressor relays 6 at this moment; this moment compressor shutdown; continue Tx dead time, and after reaching Tx dead time, temperature detecting unit 2 measured temperature must just can be connected compressor relay 6 once more less than compressor start delivery temperature limit value K; control contactor is powered to compressor, and compressor enters starting state.
If the electric current that current detecting unit 1 measures is less than lower current limit alarming value Ig, if in the following duration T of lower current limit alarming value Ig more than 3, then turn-off compressor relay 6 by processing unit 4, compressor is out of service, and the transit time, Tx started once more; If time T 3 reverts to normal current then the compressor normal operation with interior.
If the electric current that current sensor 1 measures reaches the instant protective current value If of setting, processing unit 4 control compressor relays 6 disconnect, and compressor shutdown Tx enters starting state once more after the time.
If the electric current that current detecting unit 1 measures then turn-offs compressor relay 6 when the operation range of prescribing a time limit surpasses set time, stop the compressor power supply is kept Tx dead time, enter starting state once more.
Tx reports to the police for different faults dead time, and dead time can be different, also can be integrated into other action parameters of one or several time, though replaced by distinct symbols, can integrate unification according to actual conditions.
Claims (5)
1. single-phase compressor auxiliary starter and protective gear, comprise current detecting unit, temperature detecting unit, A/D converter, processing unit, relay and alarm, relay comprises capacity relay and compressor relay, relay cut-off cut-offfing and the start-stop of compressor of control compressor start electric capacity, current detecting unit links to each other with A/D converter by signaling line with temperature detecting unit, A/D converter links to each other with processing unit by signaling line, processing unit is connected with alarm with relay by signaling line, temperature detecting unit is the Temperature Detector that detects compressor air-discharging side temperature, Temperature Detector is gathered the temperature signal of compressor air-discharging in real time, processing unit is single-chip microcomputer or programmable industrial control unit (ICU), processing unit operation auxiliary starter and defence program, auxiliary starter and defence program comprise temperature control program and Current Control program, temperature control program comprises the protection temperature value and the comparison operation program of setting, the Current Control program comprises auxiliary starter and the protective current value and the comparison operation program of setting, it is characterized in that: the auxiliary starter of the setting in the described Current Control program and protective current value are the current values of single-phase compressor common port, wherein, the auxiliary starter current value comprises the procedure triggers current value, starting capacitance turn-off current value and unusual big electric current alarming value, protective current value comprise the normal operating current instant protective current value of suddenling change, maximum sustainable revolution electric current value, the lower current limit protection value and the sectionalised protection current value of prescribing a time limit; Described current detecting unit is provided in a side of the current probe of single-phase compressor common port, current probe is gathered the current signal of single-phase compressor common port in real time, and current signal is transferred to processing unit by A/D converter, processing unit is through sending the folding and the alarm equipment alarm of command control relay after relatively calculating.
2. a kind of single-phase compressor auxiliary starter according to claim 1 and protective gear is characterized in that: described current probe is current transformer or other current measuring elements.
3. a kind of single-phase compressor auxiliary starter according to claim 1 and protective gear is characterized in that: described Temperature Detector is any one in digital temperature sensor, thermocouple and the thermal resistor.
4. a kind of single-phase compressor auxiliary starter according to claim 1 and protective gear is characterized in that: the auxiliary starter of the single-phase compressor common port of the setting in the described current protection program and every current value of protection are the current values of determining according to single-phase compressor common port electric current change curve.
5. a kind of single-phase compressor auxiliary starter according to claim 1 and protective gear, it is characterized in that: in the auxiliary starter of the single-phase compressor common port of the setting in the described electric current program and the every current value of protection, the procedure triggers current value is the current value of the 80%-90% of the Peak current of starting single-phase compressor common port under the full voltage, and the procedure triggers current value is to make program continue the current value of operation; Current value when starting capacitance turn-off current value is single-phase compressor 70%-80% synchronous speed, the current value that the control starting capacitance disconnected and inserts when starting capacitance turn-off current value was compressor start; Instant protective current value is with the upper bound current value of maximum sustainable revolution electric current test method according to the safe operation time of the time selection of reporting to the police but normal operating current suddenlys change, the normal operating current instant protective current value of suddenling change is when occurring electric current in the compressor operating and surpass maximum sustainable revolution electric current value, but the lowest high-current value in the time of safe operation; The sectionalised protection current value is with maximum sustainable revolution electric current test method in limited time, the time of fire alarming that is reached down according to different electric currents is set, in limited time the sectionalised protection current value greater than maximum sustainability revolution electric current less than the normal operating current instant protective current value of suddenling change; Maximum sustainable revolution electric current value is the current value under the voltage before compressor is reported to the police when falling the voltage test method test under the excess load condition, and maximum sustainable revolution electric current value is the current value that guarantees under the compressor maximum load condition that compressor can continuous running; Lower current limit protection value is the current value of compressor under minimum load, and lower current limit protection value is the minimum current value of compressor safe operation; Unusual big electric current alarming value is the starting current value under 120% voltage, the minimum current value of abnormal conditions warning and control compressor start-stop when being compressor start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202030684U CN201486834U (en) | 2009-09-04 | 2009-09-04 | Assistant starting and protecting device of single-phase compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202030684U CN201486834U (en) | 2009-09-04 | 2009-09-04 | Assistant starting and protecting device of single-phase compressor |
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| CN201486834U true CN201486834U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202030684U Expired - Lifetime CN201486834U (en) | 2009-09-04 | 2009-09-04 | Assistant starting and protecting device of single-phase compressor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299992A (en) * | 2015-11-26 | 2016-02-03 | 广东美的制冷设备有限公司 | Compressor control system, air conditioner and compressor control method |
| CN105370557A (en) * | 2014-08-28 | 2016-03-02 | 上海日立电器有限公司 | Protection system of variable frequency compressor |
| CN105743065A (en) * | 2014-12-11 | 2016-07-06 | 广东美的制冷设备有限公司 | Air conditioner, compressor reverse rotation protection system and protection method |
| CN107228489A (en) * | 2017-07-24 | 2017-10-03 | 广东美的暖通设备有限公司 | The method for heating and controlling and Teat pump boiler of Teat pump boiler |
| CN107659066A (en) * | 2017-10-31 | 2018-02-02 | 四川长虹空调有限公司 | A kind of motor module and its control method |
| CN108361185A (en) * | 2017-11-30 | 2018-08-03 | 陈红球 | A kind of the startup control method and startup control system of air compressor machine |
| CN109236627A (en) * | 2018-09-10 | 2019-01-18 | 珠海格力电器股份有限公司 | Compressor protection circuit, circuit system and air conditioner |
| CN110416984A (en) * | 2019-07-25 | 2019-11-05 | 珠海凌达压缩机有限公司 | Compressor protection circuit, compressor and air conditioner |
| CN111237180A (en) * | 2019-12-27 | 2020-06-05 | 泰豪科技股份有限公司 | Air compressor, air compressor starting device and starting circuit thereof |
| CN112165279A (en) * | 2020-09-23 | 2021-01-01 | 长虹华意压缩机股份有限公司 | Control system and method for constant-frequency compressor of refrigeration appliance |
-
2009
- 2009-09-04 CN CN2009202030684U patent/CN201486834U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370557A (en) * | 2014-08-28 | 2016-03-02 | 上海日立电器有限公司 | Protection system of variable frequency compressor |
| CN105743065A (en) * | 2014-12-11 | 2016-07-06 | 广东美的制冷设备有限公司 | Air conditioner, compressor reverse rotation protection system and protection method |
| CN105299992A (en) * | 2015-11-26 | 2016-02-03 | 广东美的制冷设备有限公司 | Compressor control system, air conditioner and compressor control method |
| CN107228489A (en) * | 2017-07-24 | 2017-10-03 | 广东美的暖通设备有限公司 | The method for heating and controlling and Teat pump boiler of Teat pump boiler |
| CN107659066A (en) * | 2017-10-31 | 2018-02-02 | 四川长虹空调有限公司 | A kind of motor module and its control method |
| CN108361185A (en) * | 2017-11-30 | 2018-08-03 | 陈红球 | A kind of the startup control method and startup control system of air compressor machine |
| CN109236627A (en) * | 2018-09-10 | 2019-01-18 | 珠海格力电器股份有限公司 | Compressor protection circuit, circuit system and air conditioner |
| CN110416984A (en) * | 2019-07-25 | 2019-11-05 | 珠海凌达压缩机有限公司 | Compressor protection circuit, compressor and air conditioner |
| CN111237180A (en) * | 2019-12-27 | 2020-06-05 | 泰豪科技股份有限公司 | Air compressor, air compressor starting device and starting circuit thereof |
| CN112165279A (en) * | 2020-09-23 | 2021-01-01 | 长虹华意压缩机股份有限公司 | Control system and method for constant-frequency compressor of refrigeration appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO., LTD. Free format text: FORMER NAME: DALIAN SANYO COMPRESSOR CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 116600 Dalian economic and Technological Development Zone, Liaoning Pine Street, No. 8 Patentee after: Panasonic's compressor (Dalian) Co., Ltd Address before: 116033 No. 78 East Sea Road, Ganjingzi District, Liaoning, Dalian Patentee before: Dalian Sanyo Compressor Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |