Electronic expansion valve control method, control device and air conditioning system
A technology of electronic expansion valve and control method, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as poor adjustment accuracy of electronic expansion valve, and achieve the effect of improving work efficiency and control accuracy
Active Publication Date: 2018-06-01
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0005] The purpose of the present invention is to propose a method for controlling an electronic expansion valve, which can solve the problem of poor adjustment accuracy of the electronic expansion valve existing in the prior art
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[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0026] Such as figure 1 As shown, this embodiment provides a method for controlling an electronic expansion valve, which includes the following steps:
[0027] Step A: Set up the operating condition database of the air-conditioning unit in all working conditions, which includes the operating parameters of the unit under each working condition obtained through multiple experiments, and the opening of the electronic expansion valve corresponding to each operating parameter;
[0028] Step B: Detect the actual operating parameters of the unit during the operation of the unit;
[0029] Step C: By searching the database, find the operating parameters corresponding to the actual operating parameters in the database, select the corresponding electronic expansion valve opening according to the searched oper...
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The invention relates to the technical field of refrigeration equipment, in particular to an electronic expansion valve control method, a control device and an air conditioning system. The electronic expansion valve control method includes setting a database of operating conditions of the air-conditioning unit in all working conditions, and the database of operating conditions in all working conditions includes the operating parameters of the unit under each working condition obtained through experiments, and the opening of the electronic expansion valve corresponding to each operating parameter; During the operation of the unit, the actual operating parameters of the unit are detected; by searching the database, the operating parameters corresponding to the actual operating parameters in the database are searched, and the corresponding electronic expansion valve opening is selected according to the found operating parameters, and then according to the selected Adjust the opening of the electronic expansion valve of the electronic expansion valve. At the same time, an electronic expansion valve control device adopting the above-mentioned control method and an air-conditioning system adopting the above-mentioned control device are also provided. The control method provided by the invention improves the control precision of the electronic expansion valve, and further improves the working efficiency of the unit.
Description
technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an electronic expansion valve control method, a control device and an air conditioning system. Background technique [0002] During the operation of the air conditioning system, the refrigerant flow rate has a large range of fluctuations according to the load, while traditional throttling components such as capillary tubes and thermal expansion valves cannot guarantee the stable operation of the system due to their narrow adjustment range or inaccuracy. Due to its large flow adjustment range, mature drive technology, and flexible control, electronic expansion valves have become commonly used throttling components in air-conditioning systems. [0003] As one of the important components of the compression steam cycle system, the electronic expansion valve plays the role of throttling and adjusting the liquid supply. It plays a vital role in the unit performance of ...
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IPC IPC(8): F25B49/02F24F11/63
Inventor 张丙龙忠铿罗炽亮吴宏择陈耿松李莹
Owner GREE ELECTRIC APPLIANCES INC