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Method and device for generating initial opening degree of electronic expansion valve

A technology of electronic expansion valve and air conditioner, which is applied in the field of control and can solve problems such as improper initial opening and slow stabilization

Active Publication Date: 2017-03-08
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and device for generating the initial opening of the electronic expansion valve, so as to solve the problem that the initial opening of the electronic expansion valve of the existing air conditioner is generated according to human experience or experiments, and the improper initial opening leads to system failure. Stable and slow problem after running

Method used

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  • Method and device for generating initial opening degree of electronic expansion valve
  • Method and device for generating initial opening degree of electronic expansion valve
  • Method and device for generating initial opening degree of electronic expansion valve

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Embodiment 1

[0024] An embodiment of the present invention provides a method for generating an initial opening degree of an electronic expansion valve. Such as figure 1 As shown, the method includes the following steps:

[0025] Step S10, read the rated cooling capacity Q of the air conditioner c , Rated operating frequency f c , the target frequency f after the air conditioner is turned on, and the indoor temperature T sin and the outside temperature T out .

[0026] Specifically, when the air conditioning system is just turned on, the air conditioning system will generate a target frequency according to the target temperature set by the user for the air conditioner. In this solution, the above target frequency f and the rated cooling capacity Q of the air conditioner itself are read. c and rated operating frequency f c .

[0027] What needs to be explained here is that the rated cooling capacity Q of the above-mentioned air conditioner c and rated operating frequency f c It can ...

Embodiment 2

[0070] The embodiment of the present invention also provides a device for generating the initial opening degree of the electronic expansion valve, such as figure 2 As shown, the device may include:

[0071] The reading unit 20 is used to read the rated cooling capacity Q of the air conditioner c , Rated operating frequency f c , the target frequency f after the air conditioner is turned on, and the indoor temperature T sin and the outside temperature T out .

[0072] Specifically, when the air conditioning system is just turned on, the air conditioning system will generate a target frequency according to the target temperature set by the user for the air conditioner. In this solution, the above target frequency f and the rated cooling capacity Q of the air conditioner itself are read. c and rated operating frequency f c .

[0073] What needs to be explained here is that the rated cooling capacity Q of the above-mentioned air conditioner c and rated operating frequency ...

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Abstract

The invention discloses a generation method and a generation system for the initial opening degree of an electronic expansion valve. The method includes the following steps: the rated refrigerating capacity Qc and rated operating frequency fc of an air conditioner, the target frequency f of the started air conditioner, outdoor temperature Tout and indoor temperature Tsin are read, and according to the rated refrigerating capacity Qc and rated operating frequency fc of the air conditioner and the target frequency f of the started air conditioner, the operating-condition refrigerating capacity Q of the air conditioner is generated by calculation; according to the operating-condition refrigerating capacity Q, the outdoor temperature Tout and the indoor temperature Tsin, the value of air conditioner refrigerant mass flow m is generated by calculation; according to the value of air conditioner refrigerant mass flow m and the flow area A of the electronic expansion valve, the lift of the electronic expansion valve is generated by calculation; according to the lift of the electronic expansion valve, the initial opening degree of the electronic expansion valve is generated by calculation. The invention solves the problem that since the initial opening degrees of electronic expansion valves of conventional air conditioners are generated according to the experience of people or experiments, incorrect initial opening degrees can lead to the slow stabilization of systems in operation.

Description

technical field [0001] The invention relates to the field of control, in particular to a method and device for generating an initial opening degree of an electronic expansion valve. Background technique [0002] 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. In the electronic expansion valve control method, 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 If the degree is selected properly, the system will soon be stable, and the system will run in a state with high energy efficiency. [0003] What needs to be explained here is that there is no theory as a guide for the setting of the initial o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F24F11/00
CPCF24F11/83F24F11/84F25B41/31
Inventor 魏广飞吴俊鸿
Owner GREE ELECTRIC APPLIANCES INC