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Electronic expansion valve control method and device and air-conditioning machine set

A technology of electronic expansion valve and control method, which is applied in the field of electronic expansion valve control method, air conditioning unit, and device, and can solve the problems of low control precision of electronic expansion valve and achieve the effect of improving control precision

Active Publication Date: 2015-04-22
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an electronic expansion valve control method, device and air conditioning unit to solve the problem of low control precision of the electronic expansion valve in the prior art

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  • Electronic expansion valve control method and device and air-conditioning machine set
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  • Electronic expansion valve control method and device and air-conditioning machine set

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Embodiment Construction

[0024] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first" an...

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Abstract

The invention discloses an electronic expansion valve control method and device and an air-conditioning machine set. The electronic expansion valve control method comprises the following steps: detecting the exhaust temperature of a compressor; detecting the air sucking temperature of the compressor; detecting the temperature of a throttle point, wherein the temperature of the throttle point is the temperature of the throttle point after the electronic expansion valve is throttled; selecting a present control strategy from preset control strategies according to the exhaust temperature, the air sucking temperature and the temperature of the throttle point; controlling the opening degree of the electronic expansion valve according to the present control strategy. By adopting the electronic expansion valve control method and device and the air-conditioning machine set, the problem that in the prior art the control precision of the electronic expansion valve is low is solved, and the effect of improving the control precision of the electronic expansion valve is achieved.

Description

Technical field [0001] The present invention relates to the field of air conditioning, and in particular to an electronic expansion valve control method, device and air conditioning unit. Background technique [0002] The current electronic expansion valve control is based on the control of suction superheat or exhaust superheat. This type of air conditioning unit system needs to be equipped with a corresponding pressure sensor. The control principle is that the air conditioning unit system is connected to a pressure sensor, and the pressure sensor converts the pressure value into a temperature value, and then participates in the conversion of the control strategy, and the output control is based on the opening of the electronic expansion valve. [0003] However, there are load changes and vapor-liquid two-phase changes in the actual operation of the air conditioning unit system, which will cause the high and low pressure of the system to fluctuate. However, the traditional air con...

Claims

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Application Information

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IPC IPC(8): F25B49/02
CPCF25B49/02F25B2600/2513F25B2700/21151F25B2700/21152
Inventor 徐美俊刘华黄章义陈培生陈锡保唐育辉石伟于宗伟王建凯
Owner GREE ELECTRIC APPLIANCES INC
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