Air conditioner electronic expansion valve control method, device, computer product and air conditioner

Abstract

The invention discloses a control method, a device, a computer product and an air conditioner for an air conditioner electronic expansion valve, and relates to the technical field of air conditioners to correct the opening degree deviation of the electronic expansion valve. The control method of the electronic expansion valve of the air conditioner includes: obtaining the coil temperature corresponding to each indoor unit that is turned on in the air conditioner in real time; judging whether the air conditioner meets all the entry conditions of the electronic expansion valve opening degree correction process; The electronic expansion valve corresponding to the indoor unit is used as the electronic expansion valve to be adjusted, and the electronic expansion valve to be adjusted is controlled to enter the electronic expansion valve opening degree correction process, and the opening degree of the electronic expansion valve to be adjusted is adjusted, so that the opening degree of the electronic expansion valve to be adjusted is obtained Correction; if not, continue to judge whether the air conditioner meets all the entry conditions of the electronic expansion valve opening degree correction process. The control method of the electronic expansion valve of the air conditioner provided by the present invention can correct the deviation of the opening degree of the electronic expansion valve.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for controlling an electronic expansion valve of an air conditioner, a computer product and an air conditioner. Background technique [0002] In a one-to-many or multi-connected air-conditioning system (that is, an air-conditioning system in which one outdoor unit drives multiple indoor units), electronic expansion valves are usually used to throttle the refrigerant in the air-conditioning system. If the indoor unit is in cooling or dehumidification mode, if a system abnormality or external environment interference occurs, the control of the electronic expansion valve corresponding to the indoor unit may deviate. For example, there are foreign objects in the electronic expansion valve that block the action of the electronic expansion valve or the transmission of control signals is wrong, which may cause the electronic expansion valve corresponding to ...

AI Technical Summary

Problems solved by technology

For example, foreign matter in the electronic expansion valve blocks the action of the electronic expansion valve or the transmission of the control signal is wrong, which may cause the electronic expansion valve corresponding to the indoor unit to be out of sync; another example is that the foreign matter in the electronic expansion valve blocks the flow of part of the refrigerant. , which may cause the refrigerant flow corresponding to the current opening of the electronic expansion valve to fail to meet the cooling demand of the indoor unit

[0003] The above-mentioned deviations in the opening of the electronic expansion valve can cause a large deviation between the refrigerant flow through the electronic expansion valve and the actual refrigerant flow required by the corresponding indoor unit, and ordinary valve adjustment measures can no longer control the electronic expansion valve Effective regulation, resulting in the inability to meet the cooling demand of the indoor unit according to the designed heat transfer of each indoor unit

When the refrigerant flow in the electronic expansion valve corresponding to some indoor units is too much, the refrigerant flow in the electronic expansion valve corresponding to another part of the indoor units will be too small, which will cause a large difference in the cooling or dehumidification effect of different indoor units , affecting the user experience of using the air conditioner

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