CN102721115B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN102721115B CN102721115B CN201210214216.9A CN201210214216A CN102721115B CN 102721115 B CN102721115 B CN 102721115B CN 201210214216 A CN201210214216 A CN 201210214216A CN 102721115 B CN102721115 B CN 102721115B
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- temperature sensor
- heat exchanger
- temperature
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- indoor heat
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Abstract
The invention relates to an air conditioner and a control method of the air conditioner. The air conditioner comprises a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger and a throttling part, which are connected by a pipeline to form a closed air conditioning system, and is characterized by also comprising a refrigerant heater, an exhaust gas temperature sensor, a temperature sensor of the indoor heat exchanger, an indoor ambient temperature sensor and an outdoor ambient temperature sensor, wherein the refrigerant heater is arranged on an exhaust pipe of the compressor or is arranged on a connection pipe of the indoor heat exchanger and the four-way valve, the exhaust gas temperature sensor is arranged at an outlet of the compressor, the temperature sensor of the indoor heat exchanger and the indoor ambient temperature sensor are respectively arranged on the indoor heat exchanger, and the outdoor ambient temperature sensor is arranged on the outdoor heat exchanger. The air conditioner has the advantages that when the outdoor ambient temperature is low, the heating capability of a system can be effectively improved, and the comfort level of a user during the low temperature heating is increased; and a pipeline of the system is not improved greatly, and the purposes of low temperature heating amount is achieved by a simple and reliable mode.
Description
Technical field
The invention provides a kind of control method of air-conditioner.
Background technology
At present, when heat pump air conditioner moves at low temperatures, especially at outdoor environment temperature during lower than 0 ℃, heating capacity is significantly decay along with the reduction of temperature, causes indoor temperature to decline, and has a strong impact on the comfort level in room and user's use.Especially the type of R290 refrigerant, owing to being subject to filling quantitative limitation, has a negative impact to heating capacity, due to the combustibility of refrigerant, on the indoor set of R290 refrigerant type, electrical heating is installed and has potential safety hazard simultaneously.Therefore, the heating capacity under its low temperature is not enough just more obvious.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, operation is convenient, a kind of air-conditioner and the control method thereof that improve heating capacity under worst cold case, even if do not allowing to use on the air-conditioner of indoor electric heating, also the heating capacity in the time of improving air-conditioning and move under worst cold case, guarantees the stability of room temperature and the comfortableness that user uses.
For realizing a kind of technical scheme of above-mentioned purpose of design, be: a kind of air-conditioner, comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and throttle part, described compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and throttle part are connected to airtight air-conditioning system by pipeline; Characterized by further comprising refrigerant heater, exhaust gas temperature sensor, indoor heat exchanger temperature sensor, indoor environment temperature sensor and outdoor environment temperature sensor, described refrigerant heater is arranged on the blast pipe of compressor, described exhaust gas temperature sensor is arranged on the exit of compressor, described indoor heat exchanger temperature sensor and indoor environment temperature sensor are separately positioned on indoor heat exchanger place, and described outdoor environment temperature sensor setting is at outdoor heat exchanger place.
For realizing another technical scheme of above-mentioned purpose of design, be: a kind of air-conditioner, comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and throttle part, described compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and throttle part are connected to airtight air-conditioning system by pipeline; Characterized by further comprising refrigerant heater, exhaust gas temperature sensor, indoor heat exchanger temperature sensor, indoor environment temperature sensor and outdoor environment temperature sensor, described refrigerant heater is arranged on the tube connector of indoor heat exchanger and cross valve, described exhaust gas temperature sensor is arranged on the exit of compressor, described indoor heat exchanger temperature sensor and indoor environment temperature sensor are separately positioned on indoor heat exchanger place, and described outdoor environment temperature sensor setting is at outdoor heat exchanger place.
For realizing above-mentioned purpose of design, the control step of air-conditioner is as follows:
The probe temperature of definition temperature sensor is: t
1for delivery temperature, t
2for indoor heat exchanger temperature, t
3for indoor environment temperature, t
4for outdoor environment temperature; Use t below
i(i=1,2,3,4) replace described probe temperature;
Definition associated temperature parameter is: T
11for delivery temperature critical parameter, T
12for delivery temperature critical parameter, T
21for indoor heat exchanger temperature critical parameter, T
22for indoor heat exchanger temperature critical parameter, T
31for indoor environment temperature critical parameter, T
32for indoor environment temperature critical parameter, T
4for outdoor environment temperature critical parameter, and T
11be greater than T
12, T
21be greater than T
22, T
31be greater than T
32;
Step 1, in starting of air conditioner or running, if any one temperature sensor fault detected, refrigerant heater do not start operation or out of service;
Step 2, freeze, dehumidify or when operation of ventilating at air-conditioning, refrigerant heater does not start, in closed condition;
When the situation of defrost appears in step 3, air-conditioner in heating operation, if refrigerant heater moves, continue to keep running status; If refrigerant heater is operation not, start the operation of refrigerant heater, defrost finishes to proceed to after the state of heating, and according to following 4-6 bar control program, judges whether refrigerant heater refrigerant heater continues to move and carry out dependent instruction;
Step 4, when air-conditioning carries out heating operation, the refrigerant heater that must meet the following conditions could start: the temperature t of exhaust gas temperature sensor
1be less than or equal to T
12, and the temperature t of indoor environment temperature sensor
3be less than or equal to T
32, and the temperature t of outdoor environment temperature sensor
4be less than or equal to T
4;
Step 5, when air-conditioning carries out heating operation, if refrigerant heater has started and in running status, when the temperature t of exhaust gas temperature sensor
1be less than or equal to T
12, or the temperature t of indoor heat exchanger temperature sensor
2be less than or equal to T
22, or the temperature t of indoor environment temperature sensor
3be less than or equal to T
32, refrigerant heater normally moves;
Step 6, when air-conditioning carries out heating operation, if refrigerant heater is through starting and in running status, when the temperature t of exhaust gas temperature sensor
1be greater than T
11, or the temperature t of indoor heat exchanger temperature sensor
2be greater than T
21℃, or the temperature t of indoor environment temperature sensor
3be greater than T
31, refrigerant heater is out of service.
The present invention's having the following advantages compared with prior art:
1,, when outdoor environment temperature is lower, can effectively improve the heating capacity of system, user's comfort level while having improved low-temperature heating;
2, compare with normal domestic use air-conditioning system pipeline, the change of this system pipeline is little, can reach the object that improves low-temperature heating capacity in simple, reliable mode.
accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two;
Fig. 3 is the flow chart of refrigerant heater control program of the present invention.
In figure: 1, compressor; 2, cross valve; 3, indoor heat exchanger; 4, refrigerant heater; 5, outdoor heat exchanger; 6, throttle part; 7, exhaust gas temperature sensor; 8, indoor heat exchanger temperature sensor; 9, indoor environment temperature sensor; 10, outdoor environment temperature sensor.
the specific embodiment
below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment mono-
As shown in Figure 1, a kind of air-conditioner, comprise compressor 1, cross valve 2, indoor heat exchanger 3, outdoor heat exchanger 5 and throttle part 6, described compressor 1, cross valve 2, indoor heat exchanger 3, outdoor heat exchanger 5 and throttle part 6 are connected to airtight air-conditioning system by pipeline; Feature of the present invention is also to comprise refrigerant heater 4, exhaust gas temperature sensor 7, indoor heat exchanger temperature sensor 8, indoor environment temperature sensor 9 and outdoor environment temperature sensor 10, described refrigerant heater 4 is arranged on the blast pipe of compressor 1, described exhaust gas temperature sensor 7 is arranged on the exit of compressor 1, described indoor heat exchanger temperature sensor 8 and indoor environment temperature sensor 9 are separately positioned on indoor heat exchanger 3 places, and described outdoor environment temperature sensor 10 is arranged on outdoor heat exchanger 5 places.
Embodiment bis-
As shown in Figure 2, a kind of air-conditioner, comprise compressor 1, cross valve 2, indoor heat exchanger 3, outdoor heat exchanger 5 and throttle part 6, described compressor 1, cross valve 2, indoor heat exchanger 3, outdoor heat exchanger 5 and throttle part 6 are connected to airtight air-conditioning system by pipeline; Feature of the present invention is also to comprise refrigerant heater 4, exhaust gas temperature sensor 7, indoor heat exchanger temperature sensor 8, indoor environment temperature sensor 9 and outdoor environment temperature sensor 10, described refrigerant heater 4 is arranged on the tube connector of indoor heat exchanger 3 and cross valve 2, described exhaust gas temperature sensor 7 is arranged on the exit of compressor 1, described indoor heat exchanger temperature sensor 8 and indoor environment temperature sensor 9 are separately positioned on indoor heat exchanger 3 places, and described outdoor environment temperature sensor 10 is arranged on outdoor heat exchanger 5 places.
It is as follows that embodiment mono-, two controls step:
The probe temperature of definition temperature sensor is: t
1for delivery temperature, t
2for indoor heat exchanger temperature, t
3for indoor environment temperature, t
4for outdoor environment temperature; Use t below
i(i=1,2,3,4) replace described probe temperature;
Definition associated temperature parameter is: T
11for delivery temperature critical parameter, T
12for delivery temperature critical parameter, T
21for indoor heat exchanger temperature critical parameter, T
22for indoor heat exchanger temperature critical parameter, T
31for indoor environment temperature critical parameter, T
32for indoor environment temperature critical parameter, T
4for outdoor environment temperature critical parameter, and T
11be greater than T
12, T
21be greater than T
22, T
31be greater than T
32;
Step 1, in starting of air conditioner or running, if any one temperature sensor fault detected, refrigerant heater do not start operation or out of service;
Step 2, freeze, dehumidify or when operation of ventilating at air-conditioning, refrigerant heater does not start, in closed condition;
When the situation of defrost appears in step 3, air-conditioner in heating operation, if refrigerant heater 4 has moved, continue to keep running status; If not operation of refrigerant heater 4, starts 4 operations of refrigerant heater, defrost finishes to proceed to after the state of heating, and according to following 4-6 bar control program, judges whether refrigerant heater refrigerant heater 4 continues to move and carry out dependent instruction;
Step 4, when air-conditioning carries out heating operation, the refrigerant heater 4 that must meet the following conditions could start: the temperature t of exhaust gas temperature sensor 7
1be less than or equal to T
12, and the temperature t of indoor environment temperature sensor 9
3be less than or equal to T
32, and the temperature t of outdoor environment temperature sensor 10
4be less than or equal to T
4;
Step 5, when air-conditioning carries out heating operation, if refrigerant heater 4 has started and in running status, when the temperature t of exhaust gas temperature sensor 7
1be less than or equal to T
12, or the temperature t of indoor heat exchanger temperature sensor 8
2be less than or equal to T
22, or the temperature t of indoor environment temperature sensor 9
3be less than or equal to T
32, refrigerant heater 4 normally moves;
Step 6, when air-conditioning carries out heating operation, if refrigerant heater 4 has started and in running status, when the temperature t of exhaust gas temperature sensor 7
1be greater than T
11, or the temperature t of indoor heat exchanger temperature sensor 8
2be greater than T
21, or the temperature t of indoor environment temperature sensor 9
3be greater than T
31, refrigerant heater 4 is out of service.
In above scheme, T
11=60 ℃, T
12=55 ℃; T
21=48 ℃, T
22=43 ℃; T
31=25 ℃, T
32=20 ℃; T
4=5 ℃.
When entering Defrost operation, if not operation of refrigerant heater 4 is opened refrigerant heater and made its operation; If refrigerant heater 4 has moved, maintain operation constant.When exiting Defrost operation, according to the control program of heating operation, determine whether refrigerant heater continues operation.
In low-temperature heating process, the temperature that enters the cold-producing medium of indoor set gets a promotion, and has improved the heating capacity of air-conditioning under worst cold case, thereby has improved user's comfortableness.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a control method for air-conditioner, air-conditioner comprises compressor (1), cross valve (2), indoor heat exchanger (3), outdoor heat exchanger (5) and throttle part (6), described compressor (1), cross valve (2), indoor heat exchanger (3), outdoor heat exchanger (5) and throttle part (6) are connected to airtight air-conditioning system by pipeline, also comprise refrigerant heater (4), exhaust gas temperature sensor (7), indoor heat exchanger temperature sensor (8), indoor environment temperature sensor (9) and outdoor environment temperature sensor (10), described refrigerant heater (4) is arranged on the blast pipe of compressor (1), described exhaust gas temperature sensor (7) is arranged on the exit of compressor (1), described indoor heat exchanger temperature sensor (8) and indoor environment temperature sensor (9) are all arranged on indoor heat exchanger (3) and locate, described outdoor environment temperature sensor (10) is arranged on outdoor heat exchanger (5) and locates, it is characterized in that step is as follows:
The probe temperature of definition temperature sensor is: t
1for delivery temperature, t
2for indoor heat exchanger temperature, t
3for indoor environment temperature, t
4for outdoor environment temperature; Use t below
i(i=1,2,3,4) replace described probe temperature;
Definition associated temperature parameter is: T
11for delivery temperature critical parameter, T
12for delivery temperature critical parameter, T
21for indoor heat exchanger temperature critical parameter, T
22for indoor heat exchanger temperature critical parameter, T
31for indoor environment temperature critical parameter, T
32for indoor environment temperature critical parameter, T
4for outdoor environment temperature critical parameter, and T
11be greater than T
12, T
21be greater than T
22, T
31be greater than T
32;
Step 1, in starting of air conditioner or running, if any one temperature sensor fault detected, refrigerant heater do not start operation or out of service;
Step 2, freeze, dehumidify or when operation of ventilating at air-conditioning, refrigerant heater does not start, in closed condition;
When the situation of defrost appears in step 3, air-conditioner in heating operation, if refrigerant heater (4) moves, continue to keep running status; If refrigerant heater (4) is operation not, start refrigerant heater (4) operation, defrost finishes to proceed to after the state of heating, and according to following steps four, to step 6 control program, judges whether refrigerant heater (4) continues to move and carry out dependent instruction;
Step 4, when air-conditioning carries out heating operation, the refrigerant heater (4) that must meet the following conditions could start: the temperature t of exhaust gas temperature sensor (7)
1be less than or equal to T
12, and the temperature t of indoor environment temperature sensor (9)
3be less than or equal to T
32, and the temperature t of outdoor environment temperature sensor (10)
4be less than or equal to T
4;
Step 5, when air-conditioning carries out heating operation, if refrigerant heater (4) has started and in running status, the temperature t when exhaust gas temperature sensor (7)
1be less than or equal to T
12, and the temperature t of indoor heat exchanger temperature sensor (8)
2be less than or equal to T
22, and the temperature t of indoor environment temperature sensor (9)
3be less than or equal to T
32, refrigerant heater (4) normally moves;
Step 6, when air-conditioning carries out heating operation, if refrigerant heater (4) has started and in running status, the temperature t when exhaust gas temperature sensor (7)
1be greater than T
11, or the temperature t of indoor heat exchanger temperature sensor (8)
2be greater than T
21, or the temperature t of indoor environment temperature sensor (9)
3be greater than T
31, refrigerant heater (4) is out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210214216.9A CN102721115B (en) | 2012-06-27 | 2012-06-27 | Air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210214216.9A CN102721115B (en) | 2012-06-27 | 2012-06-27 | Air conditioner and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102721115A CN102721115A (en) | 2012-10-10 |
| CN102721115B true CN102721115B (en) | 2014-10-29 |
Family
ID=46946945
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210214216.9A Active CN102721115B (en) | 2012-06-27 | 2012-06-27 | Air conditioner and control method thereof |
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| Country | Link |
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| CN (1) | CN102721115B (en) |
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| CN110260450A (en) * | 2019-04-29 | 2019-09-20 | 青岛海尔空调电子有限公司 | Refrigerant recovering control method for air conditioner |
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|---|---|
| CN102721115A (en) | 2012-10-10 |
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Effective date of registration: 20220124 Address after: 528311, 26-28, B District, Mei headquarters building, 6 Mei Road, Beijiao Town, Shunde District, Foshan, Guangdong. Patentee after: MIDEA GROUP Co.,Ltd. Patentee after: Sun Yat-sen University Address before: 528311, 26-28, B District, Mei headquarters building, 6 Mei Road, Beijiao Town, Shunde District, Foshan, Guangdong. Patentee before: MIDEA GROUP Co.,Ltd. |