Air conditioner electronic expansion valve control method and control circuit
An electronic expansion valve and control circuit technology, applied in heating and ventilation control systems, refrigerators, heating methods, etc., can solve the problem of not being able to achieve good energy-saving effects, and achieve the best energy efficiency control effect and quick response effect.
Active Publication Date: 2016-12-28
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology
[0005] In view of the above problems, the purpose of the present invention is to provide a control method and a control circuit for an electronic expansion valve of an air conditioner, aiming to solve the problem that the existing electronic expansion valve control method has a certain control blind spot, which cannot achieve good energy saving under all conditions. Technical issues with effects
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] figure 1 It shows a flow of the air conditioner electronic expansion valve control method provided by the embodiment of the present invention. For the convenience of description, only the parts related to this embodiment are shown, as shown in the figure:
[0024] The method for controlling the electronic expansion valve of the air conditioner provided in this implementation includes:
[0025] Step S1: Obtain the target discharge temperature according to the operating frequency of the compressor and detect the actual discharge temperature of the compressor, and determine the return air supe...
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The present invention is applicable to the field of air conditioner control, and provides an air conditioner electronic expansion valve control method and control circuit. The method includes: obtaining the target discharge temperature according to the operating frequency of the compressor and detecting the actual discharge temperature of the compressor. Determine the return air superheat correction value based on the target exhaust temperature and the actual exhaust temperature; determine the return air superheat target initial value; and calculate the current return air superheat deviation according to the current return air superheat degree and the return air superheat correction value , and determine the correction amount of the electronic expansion valve and the adjustment time in combination with the previously calculated deviation of the return air superheat degree; adjust the opening degree of the electronic expansion valve according to the correction amount of the electronic expansion valve, and maintain the electronic expansion valve within the adjustment time The opening of the valve remains unchanged. Based on the control of the superheat degree of the return air of the compressor, the present invention combines the dual factors of the superheat degree of the return air of the compressor and the discharge temperature of the compressor, provides a control scheme with the best effect, and achieves the purpose of energy saving.
Description
technical field [0001] The invention belongs to the technical field of air conditioner control, in particular to an air conditioner electronic expansion valve control method and a control circuit. Background technique [0002] The operating frequency of the compressor of the inverter air-conditioning system can be automatically adjusted according to the change of the room temperature, so as to achieve the minimum temperature fluctuation, the best comfort and the best energy saving effect. When the operating frequency of the compressor is adjusted, the refrigerant flow rate of the circulation loop of the air conditioning system will also change. At this time, it is necessary to adjust the opening of the electronic expansion valve synchronously to achieve the best energy efficiency control. [0003] At present, the most commonly used control methods for electronic expansion valves in air-conditioning systems include compressor return air superheat control method and compressor...
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IPC IPC(8): F24F11/00F25B49/02
Inventor 霍军亚梁敏游谢李高张武军
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD