Noise reduction control method and device of air conditioner and air conditioner
A control method and technology for air conditioners, which are applied in noise suppression, heating and ventilation control systems, refrigerators, etc., can solve the problems of poor refrigerant condensation effect, serious noise, poor noise reduction effect, etc. User experience, improve the effect of noise reduction
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Embodiment 1
[0033]This embodiment provides a noise reduction control method for an air conditioner, which can be applied to an air conditioner, see e.g. figure 1 The flow chart of the noise reduction control method for the air conditioner is shown, the method mainly includes the following steps S102 to S106:
[0034] Step S102, monitoring the temperature of the water inlet pipe and the water outlet pipe of the hydraulic module.
[0035] See eg figure 2 The structural diagram of the air conditioner is shown, the air conditioner includes a hydraulic module 21, a compressor 22 and an outdoor heat exchanger 23, the hydraulic module 21 is provided with an electronic expansion valve 24, and the electronic expansion valve 24 is used to control the refrigerant flow to the hydraulic module, A bypass solenoid valve 25 is provided between the discharge pipe and the suction pipe of the compressor 22 . A high pressure switch 221 , an oil component 222 , a high pressure sensor 223 and a low pressure...
Embodiment approach 1
[0047] Embodiment 1: In this embodiment, the opening of the electronic expansion valve is controlled based on the range of the temperature difference between the saturation temperature and the target temperature.
[0048] When the temperature difference is smaller than the first limit value s1, the bypass electromagnetic valve is controlled to be opened, and the electronic expansion valve is controlled to be closed. When 0s1.
[0049] As the frequency of the compressor increases, the high pressure gradually increases, and the saturation temperature corresponding to the high pressure gradually increases. When the temperature difference is greater than the first limit value s1 and less than the second limit value s2, the valve opening degree of the control electronic expansion valve is first opening. When s1 s2, Noise reduction control is no longer performed on the bypass solenoid valve, and the air conditioner can normally control the bypass solenoid valve based on user needs...
Embodiment approach 2
[0056] Embodiment 2: In this embodiment, the maintenance time of the opening degree of the electronic expansion valve is controlled based on the range of the temperature difference between the saturation temperature and the target temperature.
[0057] When the temperature difference is smaller than the first limit value, the bypass electromagnetic valve is controlled to be opened, and the electronic expansion valve is controlled to be closed within a first time period. When 0<saturation temperature-max[water inlet pipe temperature, water outlet pipe temperature]<s1, the bypass electromagnetic valve is controlled to open, and the electronic expansion valve is controlled to have an opening degree of 0pls within the first time length t1. The value range of t1 may be 20-60s, and the preferred value is 40s.
[0058] When the temperature difference is greater than the first limit value and less than the second limit value, the electronic expansion valve is controlled to be at the f...
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