CN204787419U - Air conditioner - Google Patents
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- CN204787419U CN204787419U CN201520468074.8U CN201520468074U CN204787419U CN 204787419 U CN204787419 U CN 204787419U CN 201520468074 U CN201520468074 U CN 201520468074U CN 204787419 U CN204787419 U CN 204787419U
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Abstract
The utility model relates to an air conditioner, include the compressor through the pipeline intercommunication, outdoor heat exchanger and indoor heat exchanger, still include first cross valve and second cross valve, first cross valve includes the a1 port, the b1 port, C1 port and d1 port, the second cross valve includes the a2 port, the b2 port, C2 port and d2 port, the export and the a1 port of compressor pass through the pipeline intercommunication, the entry and the c1 port of compressor pass through the pipeline intercommunication, outdoor heat exchanger's both ends are respectively through pipeline intercommunication b2 port and d2 port, the both ends of indoor heat exchanger are respectively through pipeline intercommunication b1 port and c2 port, D1 port and a2 port pass through the pipeline intercommunication. The utility model discloses a control to two cross valve circular telegrams and outage realizes mode of heating and the conversion of changing white mode to accelerate to change white speed, promoted and changed white effect, avoided the great fluctuation of room temperature.
Description
Technical field
The utility model relates to a kind of air-conditioner, specifically, relates to a kind of heating and air conditioner improving defrost effect, belongs to air-conditioner technical field.
Background technology
Traditional cold-warm type electric auxiliary heat air conditioner is when heating, if ambient temperature is lower, outdoor heat exchanger (being also condenser) upper meeting frosting after operation a period of time, thus the exchange capability of heat of reduction heat exchanger, affect the normal operation of air-conditioner.Now, air-conditioner can enter defrost pattern, and during defrost, refrigerant is by the flowing of refrigeration direction, and after defrost terminates, air-conditioner could normal work.The defrost time generally needs about 10 minutes, and in defrost process, air-conditioner can not to indoor heating, and the temperature of contrary indoor evaporator significantly can be reduced to less than-20 DEG C.Particularly under the environment temperature of low temperature and high relative humidity, defrost more can frequently be carried out, thus causes room temperature constantly to fluctuate, and affects the comfortableness of user.
For overcoming the above-mentioned shortcoming of reverse defrost mode, in prior art, have also appeared a kind of bypass defrosting mode, also referred to as continuously heating defrost mode.As following first patent the content announced, number of patent application 200910134993.0, patent name is a kind of air-conditioner defroster.The program is that on the pipeline between exhaust outlet of compressor and cross valve, bypass stream is received between condenser outlet end and throttle part, a magnetic valve that stream is connected.Control system judges the magnetic valve needing to open during defrost in direct bypass flow path, allows most of high-temperature gas refrigerant directly flow to condenser and carries out defrost.When delivery temperature drops to uniform temperature, the closed electromagnetic valve in bypass flow path, cross valve power-off, system carries out defrost (also known as forward defrost) by kind of refrigeration cycle.This defrost mode can accelerate system defrost when frost layer is less, if but frost layer is thicker, then and after circulation several times, the delivery temperature of compressor declines obviously, causes defrost time lengthening.
In the content that first patent is announced, number of patent application 200910020567.4, patent name is a kind of cold-heat frequency-conversion air conditioner and defrosting method thereof.The program is frost-removal structure for air-conditioner frequency-changeable compressor and defrosting method, this air-conditioner outdoor unit at compressor exhaust pipe place bypass primary Ioops between condensator outlet pipe and electric expansion valve.During reverse defrost, a part of refrigerant flows directly to condenser by bypass circulation and carries out defrost, and a part of refrigerant flows to condenser defrost after heating indoor.Indoor electric heating and indoor fan work in reverse defrost process.In the sordid situation of reverse defrostization, system changes into kind of refrigeration cycle defrost, normally heats until re-start after defrost completely.When the program is owing to heating, part refrigerant causes fluctuations in indoor temperature through indoor heat absorption, although by opening electric heater auxiliary heating.If when the heat of the heat that refrigerant absorbs and electric heater auxiliary heating is close, very easily cause fluctuations in indoor temperature.Be unfavorable for the quick defrost of condenser after coolant distribution simultaneously, cause defrost time lengthening.
Utility model content
The utility model for above-mentioned shortcoming and defect of the prior art, provide a kind of structure simple, run air-conditioner easily, to improve the defrost efficiency of air-conditioner.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of air-conditioner, comprise the compressor by pipeline communication, outdoor heat exchanger and indoor heat exchanger, also comprise the first cross valve and the second cross valve, described first cross valve comprises a1 port, b1 port, c1 port and d1 port, described second cross valve comprises a2 port, b2 port, c2 port and d2 port, outlet and the a1 port of described compressor pass through pipeline communication, entrance and the c1 port of described compressor pass through pipeline communication, the two ends of described outdoor heat exchanger are respectively by pipeline communication b2 port and d2 port, the two ends of described indoor heat exchanger are respectively by pipeline communication b1 port and c2 port, d1 port and a2 port pass through pipeline communication, during described first cross valve energising, a1 port and the conducting of b1 port, c1 port and the conducting of d1 port, during described first cross valve power-off, a1 port and the conducting of d1 port, b1 port and the conducting of c1 port, during described second cross valve energising, a2 port and the conducting of d2 port, b2 port and the conducting of c2 port, during described second cross valve power-off, a2 port and the conducting of b2 port, c2 port and the conducting of d2 port.
Air-conditioner described in the utility model is heating and air conditioner, can be hanging air conditioner or floor type air-conditioner.
On the basis of technique scheme, the utility model can also do following improvement.
Further, the pipeline between c2 port and indoor heat exchanger is provided with throttle part, described restricting element is capillary or electric expansion valve.
Adopt the beneficial effect of above-mentioned further scheme to be that throttle part has and carries out reducing pressure by regulating flow effect to ducted refrigerant, conventionally in air-conditioner be capillary that caliber about 1.0-3.5mm is elongated or can automatically the internal circulating load of cold-producing medium be controlled to be the electric expansion valve of certain value.
Further, be provided with outdoor fan at described outdoor heat exchanger place, wind is introduced outdoor heat exchanger by described outdoor fan; Indoor fan is provided with at described indoor heat exchanger place, the leeward side of described indoor heat exchanger is provided with the indoor electric heater at least opening operation in described air-conditioner defrost process, when described indoor fan rotates forward, wind is first introduced indoor heat exchanger again through indoor electric heater, during described indoor fan reversion, wind is first introduced indoor heat exchanger again through indoor electric heater.
The beneficial effect of above-mentioned further scheme is adopted to be that the particular location of outdoor fan and indoor fan does not limit, as long as realize can air inducing just passable, wherein outdoor fan is that wind is introduced outdoor heat exchanger, and indoor fan needs to match with the position of indoor heat exchanger and indoor electric heater, by rotating and reverse, realize different blower effects.
The utility model also relates to a kind of defrosting method of above-mentioned air-conditioner, comprises the following steps:
Step one: when air-conditioner is heating mode, compressor normally runs, the first cross valve energising, the second cross valve power-off, outdoor fan runs, and indoor fan rotates forward;
Step 2: when the system of air-conditioner judges to reach defrost condition (when outdoor heat exchanger frosting to a certain extent, when the electric-controlled plate of air-conditioner detects and reaches defrost condition), compressor shutdown or frequency reducing, outdoor fan stops, first cross valve power-off, the second cross valve energising;
Step 3: after setting-up time t1, indoor electric heater is in running order, and indoor fan rotates backward, wind speed is that gentle breeze state is run;
Step 4: after setting-up time t2, compressor start or raising frequency, enter defrost pattern;
Step 5: when air-conditioner system judge reach exit defrost condition time, exit defrost pattern, compressor shutdown or frequency reducing, outdoor fan open, first cross valve energising, the second cross valve power-off;
Step 6: after setting-up time t3, compressor start or raising frequency, outdoor fan runs, and indoor fan forward gentle breeze rotates, and indoor electric heater works on;
Step 7: the temperature of coiler in sensing chamber, if indoor fan runs by setting speed before defrost when reaching Tx, if indoor electric heater is closed when reaching Ty, gets back to heating mode.
The system of air-conditioner judges that reaching defrost condition adopts universal method of the prior art, in air-conditioner technical field, air-conditioner defrost condition is a variety of, but the difference of territorial environment operating mode is used according to air-conditioner, most suitable defrost condition is different, exemplifies several defrost trigger conditions that some domestic general air-conditioners generally adopt below:
The first entry condition: 1, when entering heating mode or defrosting mode after general 5 minutes, according to the maximum difference of off-premises station coil temperature and indoor temperature, judge, the judgement time is 3 minutes.2, when the difference of indoor set coil temperature and indoor temperature reduces more than 5 degree and continues more than 3 minutes.3, ensure that the compressor accumulation working time was more than 45 minutes.4, indoor set coil temperature is less than 48 degree.Meet these 4 kinds of situations then to start to enter defrost simultaneously.
The second condition: compressor accumulated running time more than 45 minutes, and is run more than 20 minutes continuously, and indoor set coil temperature is less than indoor temperature 16 degree and then enters defrost state in 5 minutes.
The third condition: compressor adds up running, and running was more than 20 minutes continuously more than 3 hours, and indoor set coil temperature is less than indoor temperature 16 degree and then enters defrost state in 5 minutes.
4th kind of condition: outdoor fan enters overload protection and outdoor fan stall; start continuous operation time next time at outdoor fan and be greater than 10 minutes, also will ensure that compressor accumulated running time is more than 45 minutes or turn continuously 20 minutes indoor set coil temperatures and be less than 48 degree and then enter defrost state.
5th kind of condition: outdoor fan stall does not also enter defrost in two hours, then make a forcible entry into defrost.
Further, in step, the heating mode of the utility model air-conditioner is: refrigerant flows to indoor heat exchanger through the a1 port of the first cross valve and b1 port after the outlet discharge of compressor, then flow in outdoor heat exchanger after the c2 port and d2 port of throttle part and the second cross valve and evaporate, flow out through the b2 port of the second cross valve and a2 port, flow back to compressor through the d1 port of the first cross valve and c1 port from the entrance of compressor.
Further, in step 4, the defrost pattern of the utility model air-conditioner is: the gaseous coolant of HTHP flows out through the a1 port of the first cross valve and d1 port after the outlet discharge of compressor, defrost is entered in heat exchanger bottom outdoor through the a2 port of the second cross valve and d2 port, then heat exchanger top is flowed out outdoor, through the b2 port of the second cross valve and c2 port flow through throttle part to indoor heat exchanger, in indoor heat exchanger, low temperature refrigerant flows back to compressor from the entrance of compressor after being heated by indoor electric heater.
Adopting the beneficial effect of above-mentioned further scheme to be the utility model is by the control to two cross valve energisings and power-off, realize the conversion of heating mode and defrost pattern, different with background technology in other pipeline is set, the utility model is reversed in original pipeline, coordinate with two cross valves the switching realizing air-conditioner pattern by compressor, outdoor fan, indoor fan and indoor electric heater, can by the setting Automatic Control of system, it is convenient to control, and adjustment is rapidly.
Further, in step 5, described in exit defrost condition be reach setting-up time tx or off-premises station coil temperature>=design temperature Ts the defrost cumulative time or compressor current continuous n meets or exceeds I second
dEFROST.Concrete, described in exit defrost condition be reach setting-up time 10min or off-premises station coil temperature>=design temperature 15 DEG C or compressor current the defrost cumulative time to meet or exceed I in continuous 1 second
dEFROST, wherein current value I
dEFROSTdetermined by air-conditioner type, stochastic pattern is different and different.
In the defrosting method of the utility model air-conditioner, each concrete preferred number range is: t1 is 3-8 second, and t2 is 10-40 second, and t3 is 10-40 second, and Tx is 30-35 DEG C, Ty is 52-56 DEG C; Wherein the optimal value of above-mentioned numerical value is: t1 is 5 seconds, and t2 is 15 seconds, and t3 is 15 seconds, and Tx is 32 DEG C, and Ty is 54 DEG C.
The beneficial effects of the utility model are: compared with prior art, and the utility model, by increase by second cross valve, is opened during defrost, and high temperature refrigerant flows into from the outdoor heat exchanger bottom that frosting is serious, and top is flowed out, and is conducive to defrost.During defrost simultaneously, indoor fan reversion, opens indoor electric heater, flows back to compressor after the low temperature refrigerant in defrost process is heated by indoor electric heater, compressor exhaust temperature raises, thus accelerate defrost speed, improve defrost effect, avoid the larger fluctuation of room temperature.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of an embodiment of the utility model air-conditioner defrost.
In accompanying drawing, the list of parts representated by each label is as follows:
1, compressor, the 2, first cross valve, the 3, second cross valve, 4, outdoor heat exchanger, 5, outdoor fan, 6, throttle part, 7, indoor fan, 8, indoor heat exchanger, 9, indoor electric heater.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
The utility model relates to a kind of air-conditioner, comprise the compressor 1 by pipeline communication, outdoor heat exchanger 4 and indoor heat exchanger 8, also comprise the first cross valve 2 and the second cross valve 3, described first cross valve 2 comprises a1 port, b1 port, c1 port and d1 port, described second cross valve 3 comprises a2 port, b2 port, c2 port and d2 port, outlet and the a1 port of described compressor 1 pass through pipeline communication, entrance and the c1 port of described compressor 1 pass through pipeline communication, the two ends of described outdoor heat exchanger 4 are respectively by pipeline communication b2 port and d2 port, the two ends of described indoor heat exchanger 8 are respectively by pipeline communication b1 port and c2 port, d1 port and a2 port pass through pipeline communication, when described first cross valve 2 is energized, a1 port and the conducting of b1 port, c1 port and the conducting of d1 port, during described first cross valve 2 power-off, a1 port and the conducting of d1 port, b1 port and the conducting of c1 port, when described second cross valve 3 is energized, a2 port and the conducting of d2 port, b2 port and the conducting of c2 port, during described second cross valve 3 power-off, a2 port and the conducting of b2 port, c2 port and the conducting of d2 port.
Air-conditioner described in the utility model is heating and air conditioner, can be hanging air conditioner or floor type air-conditioner.
Preferably, the pipeline between c2 port and indoor heat exchanger 8 is provided with throttle part 6, described throttle part 6 is capillary or electric expansion valve.Throttle part 6 has and carries out reducing pressure by regulating flow effect to ducted refrigerant, conventionally in air-conditioner is capillary that caliber about 1.0-3.5mm is elongated or can automatically the internal circulating load of cold-producing medium be controlled to be the electric expansion valve of certain value.
Preferably, be provided with outdoor fan 5 at described outdoor heat exchanger 4 place, wind is introduced outdoor heat exchanger 4 by described outdoor fan 5; Indoor fan 7 is provided with at described indoor heat exchanger 8 place, the leeward side of described indoor heat exchanger 8 is provided with the indoor electric heater 9 at least opening operation in described air-conditioner defrost process, when described indoor fan 7 rotates forward, wind is first introduced indoor heat exchanger 8 again through indoor electric heater 9, when described indoor fan 7 reverses, wind is first introduced indoor heat exchanger 8 again through indoor electric heater 9.
The particular location of outdoor fan 5 and indoor fan 7 does not limit, as long as realize can air inducing just passable, wherein outdoor fan 5 is that wind is introduced outdoor heat exchanger 4, and indoor fan 7 needs to match with the position of indoor heat exchanger 8 and indoor electric heater 9, by rotating and reverse, realize different blower effects.
The utility model also relates to a kind of defrosting method of above-mentioned air-conditioner, comprises the following steps:
Step one: when air-conditioner is heating mode, compressor 1 normally runs, and the first cross valve 2 is energized, the second cross valve 3 power-off, and outdoor fan 5 runs, and indoor fan 7 rotates forward;
Step 2: when the system of air-conditioner judges to reach defrost condition (when outdoor heat exchanger frosting to a certain extent, when the electric-controlled plate of air-conditioner detects and reaches defrost condition), compressor 1 is shut down or frequency reducing, outdoor fan 5 stops, first cross valve 2 power-off, the second cross valve 3 is energized;
Step 3: after setting-up time t1, indoor electric heater 9 is in running order, and indoor fan 7 rotates backward, and wind speed is that gentle breeze state is run;
Step 4: after setting-up time t2, compressor 1 starts or raising frequency, enters defrost pattern;
Step 5: when air-conditioner system judge reach exit defrost condition time, exit defrost pattern, compressor 1 is shut down or frequency reducing, and outdoor fan 5 is opened, and the first cross valve 2 is energized, the second cross valve 3 power-off;
Step 6: after setting-up time t3, compressor 1 starts or raising frequency, and outdoor fan 5 runs, and indoor fan 7 forward gentle breeze rotates, and indoor electric heater 9 works on;
Step 7: the temperature of coiler in sensing chamber, if indoor fan 7 runs by setting speed before defrost when reaching Tx, if indoor electric heater 9 is closed when reaching Ty, gets back to heating mode.
The system of air-conditioner judges that reaching defrost condition adopts universal method of the prior art, in air-conditioner technical field, air-conditioner defrost condition is a variety of, but the difference of territorial environment operating mode is used according to air-conditioner, most suitable defrost condition is different, exemplifies several defrost trigger conditions that some domestic general air-conditioners generally adopt below:
The first entry condition: 1, when entering heating mode or defrosting mode after general 5 minutes, according to the maximum difference of off-premises station coil temperature and indoor temperature, judge, the judgement time is 3 minutes.2, when the difference of indoor set coil temperature and indoor temperature reduces more than 5 degree and continues more than 3 minutes.3, ensure that compressor 1 accumulated the working time more than 45 minutes.4, indoor set coil temperature is less than 48 degree.Meet these 4 kinds of situations then to start to enter defrost simultaneously.
The second condition: compressor 1 accumulated running time more than 45 minutes, and is run more than 20 minutes continuously, and indoor set coil temperature is less than indoor temperature 16 degree and then enters defrost state in 5 minutes.
The third condition: compressor 1 adds up running, and running was more than 20 minutes continuously more than 3 hours, and indoor set coil temperature is less than indoor temperature 16 degree and then enters defrost state in 5 minutes.
4th kind of condition: outdoor fan 5 enters overload protection and outdoor fan 5 stall; start continuous operation time next time at outdoor fan 5 and be greater than 10 minutes, also will ensure that compressor 1 accumulated running time is more than 45 minutes or turn continuously 20 minutes indoor set coil temperatures and be less than 48 degree and then enter defrost state.
5th kind of condition: outdoor fan 5 stall does not also enter defrost in two hours, then make a forcible entry into defrost.
The heating mode of the utility model air-conditioner is: refrigerant flows to indoor heat exchanger 8 through the a1 port of the first cross valve 2 and b1 port after the outlet discharge of compressor 1, then flow in outdoor heat exchanger 4 after the c2 port and d2 port of throttle part 6 and the second cross valve 3 and evaporate, flow out through the b2 port of the second cross valve 3 and a2 port, flow back to compressor 1 through the d1 port of the first cross valve 2 and c1 port from the entrance of compressor 1.
The defrost pattern of the utility model air-conditioner is: the gaseous coolant of HTHP flows out through the a1 port of the first cross valve 2 and d1 port after the outlet discharge of compressor 1, defrost is entered in heat exchanger 4 bottom outdoor through the a2 port of the second cross valve 3 and d2 port, then heat exchanger 4 top is flowed out outdoor, through the b2 port of the second cross valve 3 and c2 port flow through throttle part 6 to indoor heat exchanger 8, after in indoor heat exchanger 8, low temperature refrigerant is heated by indoor electric heater 9, compressor 1 is flowed back to from the entrance of compressor 1 through the b1 port of the first cross valve 2 and c1 port.
The utility model is by the control to two cross valves (the first cross valve 2, second cross valve 3) energising and power-off, realize the conversion of heating mode and defrost pattern, the utility model is reversed in original pipeline, coordinate with two cross valves (the first cross valve 2, second cross valve 3) switching realizing air-conditioner pattern by compressor 1, outdoor fan 5, indoor fan 7 and indoor electric heater 9, can by the setting Automatic Control of system, it is convenient to control, and adjustment rapidly.
It is reach setting-up time tx or off-premises station coil temperature>=design temperature Ts the defrost cumulative time or compressor 1 current continuity n meets or exceeds I second that the utility model exits defrost condition
dEFROST.Preferably, exiting defrost condition described in is reach setting-up time 10min or off-premises station coil temperature>=design temperature 15 DEG C or compressor 1 current continuity the defrost cumulative time to meet or exceed I in 10 seconds
dEFROST, wherein current value I
dEFROSTdetermined by air-conditioner type.
In the defrosting method of the utility model air-conditioner, each concrete preferred number range is: t1 is 3-8 second, and t2 is 10-40 second, and t3 is 10-40 second, and Tx is 30-35 DEG C, Ty is 52-56 DEG C; Wherein the optimal value of above-mentioned numerical value is: t1 is 5 seconds, and t2 is 15 seconds, and t3 is 15 seconds, and Tx is 32 DEG C, and Ty is 54 DEG C.
Compared with prior art, the utility model, by increase by second cross valve 3, is opened during defrost, and high temperature refrigerant flows into from outdoor heat exchanger 4 bottom that frosting is serious, and top is flowed out, and is conducive to defrost.During defrost simultaneously, indoor fan 7 reverses, and open indoor electric heater 9, the low temperature refrigerant in defrost process flows back to compressor 1 after being heated by indoor electric heater 9, compressor 1 delivery temperature raises, thus accelerate defrost speed, improve defrost effect, avoid the larger fluctuation of room temperature
In description of the present utility model, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In addition, a1, b1, c1, d1, a2, b2, c2, d2 port related in the utility model also only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.
In the utility model, unless otherwise clearly defined and limited, the term such as term " connection ", " conducting " should be interpreted broadly, and such as, can be through, also can be connected by pipeline, or integral; Can be fixedly connected with, also can be removably connect; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.
Claims (3)
1. an air-conditioner, comprise the compressor (1) by pipeline communication, outdoor heat exchanger (4) and indoor heat exchanger (8), it is characterized in that, also comprise the first cross valve (2) and the second cross valve (3), described first cross valve (2) comprises a1 port, b1 port, c1 port and d1 port, described second cross valve (3) comprises a2 port, b2 port, c2 port and d2 port, outlet and the a1 port of described compressor (1) pass through pipeline communication, entrance and the c1 port of described compressor (1) pass through pipeline communication, the two ends of described outdoor heat exchanger (4) are respectively by pipeline communication b2 port and d2 port, the two ends of described indoor heat exchanger (8) are respectively by pipeline communication b1 port and c2 port, d1 port and a2 port pass through pipeline communication,
During described first cross valve (2) energising, a1 port and the conducting of b1 port, c1 port and the conducting of d1 port; During described first cross valve (2) power-off, a1 port and the conducting of d1 port, b1 port and the conducting of c1 port; During described second cross valve (3) energising, a2 port and the conducting of d2 port, b2 port and the conducting of c2 port; During described second cross valve (3) power-off, a2 port and the conducting of b2 port, c2 port and the conducting of d2 port.
2. a kind of air-conditioner according to claim 1, it is characterized in that, the pipeline between c2 port and indoor heat exchanger (8) is provided with throttle part (6), described throttle part (6) is capillary or electric expansion valve.
3. a kind of air-conditioner according to claim 2, it is characterized in that, be provided with outdoor fan (5) at described outdoor heat exchanger (4) place, wind is introduced outdoor heat exchanger (4) by described outdoor fan (5); Indoor fan (7) is provided with at described indoor heat exchanger (8) place, the leeward side of described indoor heat exchanger (8) is provided with the indoor electric heater (9) at least opening operation in described air-conditioner defrost process, when described indoor fan (7) rotates forward, wind is first introduced indoor heat exchanger (8) again through indoor electric heater (9), during described indoor fan (7) reversion, wind is first introduced indoor heat exchanger (8) again through indoor electric heater (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520468074.8U CN204787419U (en) | 2015-06-30 | 2015-06-30 | Air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990321A (en) * | 2015-06-30 | 2015-10-21 | 广东美的制冷设备有限公司 | Air conditioner and defrosting method thereof |
| CN105605734A (en) * | 2015-12-23 | 2016-05-25 | 珠海格力电器股份有限公司 | Method and device for determining whether fan motor of air conditioner performs reverse rotation or not |
| CN112781278A (en) * | 2020-05-14 | 2021-05-11 | 青岛海尔新能源电器有限公司 | Air source heat pump control method and device and air source heat pump |
-
2015
- 2015-06-30 CN CN201520468074.8U patent/CN204787419U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990321A (en) * | 2015-06-30 | 2015-10-21 | 广东美的制冷设备有限公司 | Air conditioner and defrosting method thereof |
| CN105605734A (en) * | 2015-12-23 | 2016-05-25 | 珠海格力电器股份有限公司 | Method and device for determining whether fan motor of air conditioner performs reverse rotation or not |
| CN105605734B (en) * | 2015-12-23 | 2018-12-25 | 珠海格力电器股份有限公司 | Determine the method and apparatus whether blower motor of air-conditioning inverts |
| CN112781278A (en) * | 2020-05-14 | 2021-05-11 | 青岛海尔新能源电器有限公司 | Air source heat pump control method and device and air source heat pump |
| CN112781278B (en) * | 2020-05-14 | 2022-06-17 | 青岛海尔新能源电器有限公司 | Air source heat pump control method and device and air source heat pump |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |