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Method and system for temperature control of air-conditioner heat exchanger automatic brazing

A heat exchanger and air conditioner technology, applied in temperature control, control/regulation systems, non-electric variable control, etc., can solve the problems of low temperature control accuracy, gas loss, affecting the quality of air conditioner heat exchangers, etc., to improve coordination accuracy , the effect of improving quality and improving accuracy

Active Publication Date: 2014-02-19
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

It can be seen that the existing brazing temperature control method of air-conditioning heat exchanger is greatly affected by manual experience, and in the actual control process, the pressure of the gas and combustion-supporting gas is in a state of fluctuation, so frequent adjustments are required. Controlling the flow of gas will easily cause gas loss, and the temperature control accuracy is low, which in turn affects the quality of the air conditioner heat exchanger

Method used

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] The embodiment of the invention discloses a temperature control method and system for automatic brazing of an air-conditioning heat exchanger, so as to improve the temperature control accuracy in the brazing process, thereby improving the quality of the air-conditioning heat exchanger.

[0031] Such as figure 1 As shown, a temperature control method for automatic brazing of an air-conditioning heat exchanger, comprising:

[0032] S101, collect...

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Abstract

The invention discloses a method and a system for temperature control of air-conditioner heat exchanger automatic brazing. The method comprises the steps of collecting the temperature of a brazing part of an air-conditioning heat exchanger in real time; comparing and calculating temperature deviation between the temperature, which is collected in real time, of the brazing part of the air-conditioning heat exchanger and a standard temperature; and judging whether the temperature deviation is greater than a preset threshold value or not, and if so, carrying out control on the temperature by adopting a PFC control mode and outputting a controlled variable; otherwise, carrying out control on the temperature by adopting a PID control mode and outputting a control variable. The invention further discloses a system for temperature control of air-conditioner heat exchanger automatic brazing. The method and the system disclosed by the invention combine the PFC control mode with the PID control mode, and improve the precision of temperature control, thereby improving the quality of the air-conditioning heat exchanger.

Description

technical field [0001] The invention relates to the technical field of automatic brazing of air-conditioning heat exchangers, and more specifically relates to a temperature control method and system for automatic brazing of air-conditioning heat exchangers. Background technique [0002] At present, with the improvement of people's living standards, the demand for air conditioners in the market is increasing day by day. Air-conditioning companies have increased production to meet the needs, but to face fierce market competition, while increasing production, they have put forward higher requirements for quality. Among them, the heat exchanger of the air conditioner is the main part of the air conditioner to achieve temperature and humidity adjustment through heat exchange. The heat exchanger relies on brazing of copper tubes to form a sealed circuit. If welding leakage occurs during the welding process, it will seriously affect the use of the air conditioner. [0003] At pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
Inventor 眭敏
Owner GREE ELECTRIC APPLIANCES INC
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