Air conditioner and electronic expansion valve opening control method during power-on thereof

A technology of electronic expansion valve and control method, which is applied in heating and ventilation control systems, refrigerators, heating methods, etc., and can solve the problems that electronic expansion valves cannot meet the requirements of rapid cooling and heating

Active Publication Date: 2018-01-30
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for controlling the opening of the electronic expansion valve when the air condition

Method used

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  • Air conditioner and electronic expansion valve opening control method during power-on thereof
  • Air conditioner and electronic expansion valve opening control method during power-on thereof

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[0042] The rapid cooling and heating of existing air conditioners is achieved by increasing the frequency-up speed of the inverter compressor. Although the faster frequency-up speed can make the air conditioner achieve the required effect as soon as possible, it will greatly reduce the service life of the compressor. The specific analysis is as follows :

[0043] 1. In the cold start state, the compressor will increase the frequency faster. If the electronic expansion valve adopts a fixed initial opening, a large amount of liquid refrigerant will be quickly transferred to the indoor heat exchanger, and a large amount of liquid refrigerant will be sucked by the compressor. When the air port enters the compression chamber of the compressor, liquid compression occurs, and the pump body and exhaust valve plate will be damaged, which will affect the life of the compressor.

[0044] 2. Due to the liquid back phenomenon in 1 above, the liquid refrigerant and lubricating oil in the compres...

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Abstract

The invention provides an air conditioner and an electronic expansion valve opening control method during power-on of the air conditioner. The method comprises the steps that firstly, according to thehalt time and outdoor environment temperature before power-on of a compressor, whether the power-on is in the cold boot state or the hot boot state or the middle boot state is judged, the initial opening of the electronic expansion valve is calculated according to the indoor and outdoor environment temperature and the compressor target frequency, then, according to different boot states, different holding times of the initial opening of the electronic expansion valve are set, whether the initial opening is exited in advance or not is judged according to the change rate of exhaust temperaturewithin the holding time of the initial opening of the electronic expansion valve, and normal control over the electronic expansion valve is performed. The air conditioner system can adjust the electronic expansion valve to the best opening as soon as possible according to the system load condition, and the purposes of rapid refrigeration and heating are achieved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners and their controls, and in particular relates to an air conditioner and a method for controlling the opening of an electronic expansion valve when the air conditioner is started. Background technique [0002] After the existing air conditioner is turned on by remote control, it takes about 5 minutes to achieve the expected air output effect in the cooling mode. As the outdoor ambient temperature decreases, it takes longer to reach the target outlet air temperature, which is related to the migration characteristics of the refrigerant. The user's demand after turning on the air conditioner is that the air conditioner can achieve the desired effect in the shortest time, which has a lot to do with whether the control of the electronic expansion valve can reach a stable and optimal state as soon as possible. [0003] At present, with the improvement of air conditioner energy efficiency and co...

Claims

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Application Information

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IPC IPC(8): F24F11/62F24F11/64F24F11/89F25B49/02F25B41/06F25B41/34
CPCY02B30/70
Inventor 赵站稳狄海生
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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