Electronic expansion valve control method and control system
A technology of electronic expansion valve and control method, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as excessive throttling and energy efficiency of electronic expansion valves
Active Publication Date: 2021-09-21
ZHENGZHOU HAIER AIR CONDITIONER CO LTD
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Problems solved by technology
[0005] In order to solve the above problems in the prior art, that is, in order to solve the existing technical solutions based on the target discharge temperature of the compressor to adjust the electronic expansion valve, the electronic expansion valve is prone to excessive throttling and low energy efficiency. The present invention provides a A control method for an electronic expansion valve, the electronic expansion valve is arranged in an air conditioner, and the control method includes:
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[0045] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that these embodiments are intended to illustrate the technical principles of the present invention, and are not intended to limit the scope of the invention. For example, although various steps are described in the following examples, those skilled in the art will appreciate that, in order to achieve the effects of the present embodiment, there is no need to perform in this order between different steps. It can be performed at the same time (in parallel) or in reverse order, which are within the scope of the invention.
[0046] First reference figure 1 The control method of the electronic expansion valve of the present invention will be described. in, figure 1 A flow chart of the control method of the electronic expansion valve of the present invention.
[0047] like figure 1 As shown, in order to solve the problem of...
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The invention relates to the technical field of air conditioning, in particular to a control method and a control system for an electronic expansion valve. The present invention aims to solve the problem that the existing technical solution of adjusting the electronic expansion valve based on the target exhaust temperature of the compressor is prone to excessive throttling and low energy efficiency of the electronic expansion valve. For this purpose, the control method of the electronic expansion valve of the present invention includes: obtaining the actual discharge temperature of the compressor and the wind speed of the indoor fan; based on the wind speed, selectively determining the wind speed compensation coefficient; based on the wind speed compensation coefficient, calculating the target of the compressor Exhaust temperature; comparing the target exhaust temperature with the actual exhaust temperature; based on the comparison result, controlling the opening of the electronic expansion valve. Through the above control method, the electronic expansion valve control method of the present application can improve the control accuracy of the electronic expansion valve, so that the air conditioner can maintain a state of high energy efficiency at various wind speeds.
Description
Technical field [0001] The present invention relates to the field of air conditioning techniques, and more particularly to a control method and a control system for an electronic expansion valve. Background technique [0002] Electronic expansion valves are widely used due to precise control of refrigerant flow in the air conditioner. In the prior art, the opening degree control of the electronic expansion valve mainly has two ways of controlling the suction overhaul content of the compressor and the target exhaust temperature control based on the compressor. Among them, the method of controlling the electronic expansion valve based on the target exhaust temperature of the compressor is mainly: first calculating the target exhaust gas temperature of the compressor based on the operating parameters of the air conditioner, and then target exhaust gas temperature and detected The actual exhaust temperature of the compressor is compared, and the opening degree of the electronic expan...
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IPC IPC(8): F25B41/31F25B49/02F25B41/34
CPCF25B49/02F25B2600/11F25B2600/2513F25B2700/17F25B2700/21152F25B41/31Y02B30/70
Inventor 李小平傅琳霞刘艳丽王秀霞王晓飞
Owner ZHENGZHOU HAIER AIR CONDITIONER CO LTD