Control method, device and air conditioning system for initial opening of electronic expansion valve

A technology of an electronic expansion valve and a control method, which is applied in the field of control and can solve the problems that the determination of the initial opening of the electronic expansion valve is not accurate enough, the operation is not energy-saving enough, the stable state of the air-conditioning system is slow, and the like.

Active Publication Date: 2017-07-28
GREE ELECTRIC APPLIANCES WUHAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the control of the initial opening of the electronic expansion valve is often estimated based on experience, and the determination of the initial opening of the electronic expansion valve is not accurate enough, so that the air conditioning system enters a stable state slowly, and the operation is not energy-saving enough.

Method used

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  • Control method, device and air conditioning system for initial opening of electronic expansion valve
  • Control method, device and air conditioning system for initial opening of electronic expansion valve
  • Control method, device and air conditioning system for initial opening of electronic expansion valve

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Embodiment 1

[0052] see figure 1 , figure 1 It is a flow chart of a method for controlling the initial opening of an electronic expansion valve provided by an embodiment of the present invention. like figure 1 As shown, the method includes:

[0053] Step S101, obtaining the current outdoor temperature;

[0054] Step S102, calculating a proportional parameter corresponding to the current outdoor temperature based on a preset calculation rule;

[0055] Specifically, the preset calculation rule of the proportional parameter is, the quadratic trinomial of the proportional parameter with respect to the current outdoor temperature:

[0056]

[0057] Wherein, k is the proportional parameter, a is the coefficient of the quadratic term, b is the coefficient of the first term, c is the constant term, and T 外 is the current outdoor temperature; a, b and c are preset constants. Further, optionally, the value of a is 0.0157, the value of b is 0.9908, and the value of c is 18.89.

[0058] Step...

Embodiment 2

[0074] see figure 2 , figure 2 It is a flow chart of another method for controlling the initial opening degree of the electronic expansion valve provided by the embodiment of the present invention. Such as figure 2 As shown, the method includes:

[0075] Step S201, obtaining the current outdoor temperature;

[0076] Step S202, obtaining a preset calculation rule for the proportional parameter;

[0077] Specifically, the preset calculation rule for the proportional parameter is, the quadratic trinomial of the proportional parameter with respect to the current outdoor temperature:

[0078]

[0079] Wherein, k is the proportional parameter, a is the coefficient of the quadratic term, b is the coefficient of the first term, c is the constant term, and T 外 is the current outdoor temperature; a, b and c are preset constants.

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Abstract

The invention discloses a control method and a device for an initial openness of an electronic expansion valve and an air conditioning system. The method comprises the steps of: obtaining a present outdoor temperature; calculating a proportional parameter corresponding to the present outdoor temperature based on preset calculation rules; calculating a target operation frequency of an air conditioning set; calculating a product between the proportional parameter and the target operation frequency of the air conditioning set to obtain an initial openness numerical value of the electronic expansion valve; and controlling the electronic expansion valve to operate according to the initial openness numerical value. The method can enable the electronic expansion valve to work according to the proper initial openness so as to help the air conditioning system to quickly enter a stable state; and compared with the prior art, a certain energy saving effect is achieved in the operation process.

Description

technical field [0001] The invention relates to the field of control technology, in particular to a control method, device and air conditioning system for the initial opening of an electronic expansion valve. Background technique [0002] In today's economic society, air conditioners are widely used because of their good cooling and heating effects. [0003] The initial opening of the electronic expansion valve refers to the preset value of the electronic expansion valve when the air conditioning system is just started. The initial opening of the electronic expansion valve plays a vital role in the stability of the air conditioning system. If the initial opening of the electronic expansion valve is not selected properly, the air conditioning system will stabilize very slowly. If the initial opening of the electronic expansion valve is selected properly, the air conditioning system will be very slow. Stabilization can be reached sooner, and the air conditioning system will o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/00F24F11/02
CPCF24F11/30F24F11/62F24F11/64F24F11/83F24F11/84F24F11/89F24F2110/10F24F2110/12
Inventor 魏广飞吴俊鸿
Owner GREE ELECTRIC APPLIANCES WUHAN
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