Air conditioner and control method for the air conditioner

A technology for air conditioners and control valves, applied in heating and ventilation control systems, refrigerators, heating methods, etc., can solve the problems of large heat exchange area of ​​indoor heat exchangers and accumulation of refrigerants in indoor heat exchangers, so as to avoid suction and other problems. The gas specific volume rises, avoids the reduction of exhaust pressure and return gas pressure, and solves the effect of excessive heat exchange area

Active Publication Date: 2018-10-16
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes an air conditioner, which can effectively solve the problem that the heat exchange area of ​​the indoor heat exchanger is too large when the air conditioner is in heating operation, the outdoor ambient temperature is lowered or the air conditioner is in a part-load operation state. Solve the problem of refrigerant accumulation in the shielded part of the indoor heat exchanger in the related art

Method used

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  • Air conditioner and control method for the air conditioner
  • Air conditioner and control method for the air conditioner
  • Air conditioner and control method for the air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Such as figure 1 As shown, the air conditioner 100 in this embodiment includes a compressor 1, a reversing assembly 2, an outdoor heat exchanger 3, a throttling element 4, and a first indoor heat exchanger connected in parallel in the same indoor unit 5 and the second indoor heat exchanger 6, the first control valve 7 and the second control valve 8. Among them, the first control valve 7 and the second control valve 8 are both solenoid valves. The throttle element 4 is an electronic expansion valve.

[0055] Specifically, the compressor 1 has an exhaust port 11 and a return port 12. The reversing assembly 2 includes a first valve port 21 to a fourth valve port 24. When the air conditioner 100 is cooled, the first valve port 21 and the second valve port 22 The third valve port 23 is in communication with the fourth valve port 24. When the air conditioner 100 is heating, the first valve port 21 is in communication with the third valve port 23 and the second valve port 22 and...

Embodiment 2

[0066] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the second control valve 8 is a one-way valve that communicates unidirectionally in the direction from the second indoor heat exchanger 6 to the third valve port 23. The working principle of the air conditioner 100 in the cooling mode in this embodiment is the same as that in Embodiment 1 above.

[0067] It is understandable that when the air conditioner 100 is in the heating mode, since the second control valve 8 is a one-way valve, there is always no refrigerant flow in the direction from the third valve port 23 to the second indoor heat exchanger 6 The second indoor heat exchanger 6, that is, the second indoor heat exchanger 6 is always in a shielded state. Specifically, when the air conditioner 100 needs to turn on the heating mode, first switch the operation mode of the air conditioner 100 to the cooling mode, and close the first control valve 7 to prevent the refrigerant from ...

Embodiment 3

[0069] Such as image 3 As shown, the air conditioner 100 in this embodiment includes a compressor 1, a reversing assembly 2, an outdoor heat exchanger 3, two throttling elements 4, and a first indoor heat exchange unit connected in parallel in the same indoor unit. The device 5 and the second indoor heat exchanger 6, the first control valve 7 and the second control valve 8. The second control valve 8 is a solenoid valve.

[0070] Specifically, the compressor 1 has an exhaust port 11 and a return port 12. The reversing assembly 2 includes a first valve port 21 to a fourth valve port 24. When the air conditioner 100 is cooled, the first valve port 21 and the second valve port 22 The third valve port 23 is in communication with the fourth valve port 24. When the air conditioner 100 is heating, the first valve port 21 is in communication with the third valve port 23 and the second valve port 22 and the fourth valve port 24 are in communication. The first valve port 21 is connected ...

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Abstract

The invention discloses an air conditioner and a control method for the air conditioner. The air conditioner comprises: a compressor; a reversing assembly; an outdoor heat exchanger; a throttling device; heat exchanger and the second indoor heat exchanger; the first control valve and the second control valve, in the cooling mode and need to stop using the second indoor heat exchanger, close the first control valve, and the second control valve after the set period of time The valve is in the state of cutting off the flow of refrigerant to the second indoor heat exchanger. When it is in the heating mode and needs to stop using the second indoor heat exchanger, switch to the cooling mode, then close the first control valve, and switch to Heating mode and the second control valve is in the state of blocking the flow of refrigerant to the second indoor heat exchanger. According to the air conditioner of the present invention, the problem of too large heat exchange area of ​​the indoor heat exchanger can be solved, and the problem of refrigerant accumulation in the shielded part of the indoor heat exchanger in the related art can also be solved.

Description

Technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an air conditioner and a control method of the air conditioner. Background technique [0002] When the indoor heat exchanger of the air conditioner is in heating operation, as the outdoor environment temperature decreases or the air conditioner is in partial load operation, the heat exchange area of ​​the indoor heat exchanger is too large, although the heat exchange effect of the heat exchanger is enhanced, But it also reduces the compressor discharge pressure, and then reduces the return air pressure. The drop in return air pressure causes the refrigerant suction specific volume to increase and the density decreases, and the corresponding refrigerant mass flow rate decreases. At the same time, because the exhaust pressure of the refrigerant drops, the saturation pressure of the corresponding refrigerant drops, which leads to a decrease in the heat exchange temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/67F25B49/02F25B41/06F25B43/04F25B41/30
CPCF24F11/30F24F11/62F25B43/043F25B49/022F24F11/65F25B41/37
Inventor 李洪生许永锋梁伯启吴孔祥卢健洪肖俊钊邵亚西
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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