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Method and device for controlling opening degree of electronic expansion valve

A technology of electronic expansion valve and control method, which is applied in the direction of refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems of refrigerant reduction and refrigerant accumulation, and achieve the effect of avoiding the attenuation of heat dissipation capacity

Active Publication Date: 2017-09-08
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for controlling the opening of an electronic expansion valve, to at least solve the problem of the electronic expansion valve of the shut-down internal unit in the prior art leading to the accumulation of refrigerant, resulting in the reduction of the usable refrigerant in the multi-line technical issues

Method used

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  • Method and device for controlling opening degree of electronic expansion valve
  • Method and device for controlling opening degree of electronic expansion valve
  • Method and device for controlling opening degree of electronic expansion valve

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Embodiment 1

[0018] According to an embodiment of the present invention, an embodiment of a method for controlling the opening of an electronic expansion valve is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0019] figure 2 is a flowchart of a method for controlling the opening of an electronic expansion valve according to an embodiment of the present invention, such as figure 2 As shown, the method includes the following steps:

[0020] Step S202, acquiring a first temperature parameter and a second temperature parameter, wherein the first temperature parameter is smaller than the second temperature parameter.

[0021] Specifically, the above-mentioned first temperature...

Embodiment 2

[0057] According to an embodiment of the present invention, an embodiment of an opening control device for an electronic expansion valve is provided, image 3 is a schematic diagram of an electronic expansion valve opening control device according to an embodiment of the present invention, such as image 3 As shown, the device includes:

[0058] The acquiring module 30 is configured to acquire a first temperature parameter and a second temperature parameter, wherein the first temperature parameter is smaller than the second temperature parameter.

[0059] Specifically, the above-mentioned first temperature parameter and second temperature parameter may constitute a temperature range for controlling the opening degree of the electronic expansion valve. Wherein, the first temperature parameter is smaller than the second temperature parameter, that is, the first temperature parameter may be the lower limit of the above temperature range, and the second temperature parameter may ...

Embodiment 3

[0081] According to an embodiment of the present invention, a storage medium is provided, and the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the method for controlling the opening of the electronic expansion valve in any one of Embodiment 1.

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Abstract

The invention discloses a method and device for controlling the opening degree of an electronic expansion valve. The method comprises the steps that a first temperature parameter and a second temperature parameter are acquired, wherein the first temperature parameter is smaller than the second temperature parameter; the opening degree of the electronic expansion valve of a first inner unit is adjusted, and a temperature difference parameter is controlled to be within the temperature range formed by the first temperature parameter and the second temperature parameter; and the temperature difference parameter is the difference between the outlet temperature of a second inner unit heat exchanger and the outlet temperature of a first inner unit heat exchanger, the first inner unit is a shutdown inner unit in a multi-split unit, and a second inner unit is an operating inner unit in the multi-split unit. According to the method and device, the technical problems that in the prior art, an electronic expansion valve of a shutdown inner unit in a multi-split unit is closed, consequently, refrigerant is accumulated, and available refrigerant in the multi-split unit is reduced are solved.

Description

technical field [0001] The invention relates to the field of air conditioning control, in particular to a method and device for controlling the opening of an electronic expansion valve. Background technique [0002] At present, heat pump multi-split units have been widely used. Among them, multi-split units include multiple indoor units, and users can control each indoor unit separately. The control command of the heating system is used to increase the temperature of the room in which it is installed. Since the instructions received by each indoor unit may be different, there may be situations in which some indoor units are turned on and some indoor units are turned off in multi-connection. [0003] In the existing multi-line system, the electronic expansion valve of the shutdown internal unit is closed. figure 1 It is a structural schematic diagram of a multi-connected indoor unit according to the prior art. When the indoor temperature of the indoor unit 1 and the indoor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F25B49/02F25B41/34
CPCF25B49/02F25B41/31Y02B30/70
Inventor 李龙飞傅英胜刘群波许克
Owner GREE ELECTRIC APPLIANCES INC