Integrated control method and circuit for electronic expansion valve of air conditioner

An electronic expansion valve, comprehensive control technology, applied in heating and ventilation control systems, refrigerators, heating methods, etc., can solve problems such as the inability to achieve good energy-saving effects, and achieve the best energy efficiency control effect and quick response effect.

Active Publication Date: 2014-10-22
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 comprehensive control method and circuit for the electronic expansion valve of an air conditioner, aiming to solve the problem that both the exist

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  • Integrated control method and circuit for electronic expansion valve of air conditioner
  • Integrated control method and circuit for electronic expansion valve of air conditioner
  • Integrated control method and circuit for electronic expansion valve of air conditioner

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Embodiment Construction

[0023] 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.

[0024] figure 1 It shows a process flow of the comprehensive control method for the electronic expansion valve of the air conditioner 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:

[0025] The comprehensive control method for the electronic expansion valve of the air conditioner provided in this implementation includes:

[0026] Step S1. Calculate the exhaust temperature difference according to the target exhaust temperature and the actual exhaust temperature, and calculate the f...

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Abstract

The invention is applicable to the field of air conditioner controlling and provides an integrated control method and circuit for an electronic expansion valve of an air conditioner. The method includes: calculating a first openness adjustment of the electronic expansion valve according to exhaust temperature; calculating a second opening adjustment and adjusting time of the electronic expansion valve according to superheat degree of return gas of a compressor; selecting one of the first opening adjustment and the second opening adjustment as a final opening adjustment of the electronic expansion valve according to size relationship between the first and second opening adjustments, correspondingly adjusting opening of the electronic expansion valve according to the final opening adjustment, and keeping the opening of the electronic expansion valve unchanged in an adjusting period of time. An effective control scheme is provided by combining a control method for superheat degree of the return gas of the compressor and a control method for target temperature of exhaust of the compressor; the defects of the existing two control methods can be overcome; quick response of the electronic expansion valve is achieved; control with optimal energy efficiency is achieved.

Description

technical field [0001] The invention belongs to the technical field of air conditioner control, and in particular relates to a comprehensive control method and circuit for an electronic expansion valve of an air conditioner. 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 c...

Claims

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Application Information

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IPC IPC(8): F24F11/02F25B41/06F25B49/02F25B41/31
CPCY02B30/70
Inventor 霍军亚梁敏游谢李高张武军
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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