Fuzzy diagnosis method for air conditioner refigerator failure

A fault diagnosis, air conditioning and refrigeration technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as unreported air conditioning and refrigeration systems, and achieve the effect of reducing false alarm rate, sensitivity and false alarm rate.

Inactive Publication Date: 2004-02-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are several examples of the application in the fault diagnosis of mach...

Method used

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  • Fuzzy diagnosis method for air conditioner refigerator failure
  • Fuzzy diagnosis method for air conditioner refigerator failure
  • Fuzzy diagnosis method for air conditioner refigerator failure

Examples

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Embodiment Construction

[0018] The technical scheme of the present invention will be further described below in conjunction with a specific embodiment

[0019] For the refrigerating machine system for air conditioners with a cooling capacity of 650kW, the fuzzy fault diagnosis is roughly as follows:

[0020] 1. Arrange six sensors for condensing temperature, evaporating temperature, compressor inlet temperature, compressor outlet temperature, air-conditioning room temperature, and cooling water temperature on the refrigerator, and send the collected 6 signal changes to the PC through the data acquisition system. It is assumed that there are seven types of failures in the refrigeration system. The 7 causes of failure are: too little refrigerant; blockage of refrigeration system pipes; fan stop in evaporation chamber; leakage of compressor inlet and exhaust valves; too small cooling water flow of condenser; expansion valve not opened or blocked; system oil return bad.

[0021] 2. The system first con...

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Abstract

The fuzzy diagnosis method of air-conditioner refrigerator fault is characterized by that it uses PC machine as core and adopts the fuzzy diagnosis technology to build up fuzzy mapping from element set to remark set of the object to be jadged so as to resolve the fuzzy relationship. For brevity's sake. The present invention provides an example for utilizing PC machine and the fuzzy relationship to obtain the output of the fault signal so as to implement fuzzy diagnosis.

Description

technical field [0001] The invention relates to a fault diagnosis method for an air conditioner refrigerator. In particular, a fuzzy diagnosis method for identifying faults in air-conditioning refrigerators based on fuzzy mathematics. The invention belongs to the technical fields of mechanical equipment fault diagnosis and refrigeration and air conditioning. Background technique [0002] The application of air-conditioning and refrigeration has penetrated into all fields of society. The air-conditioning and refrigeration system is becoming more and more complex, the equipment tends to be diversified and large-scale, and the degree of self-control is increasing day by day. The performance of the refrigerator has a great impact on the air conditioning system, and real-time online detection and fault diagnosis of its status are required. At present, in domestic air-conditioning and refrigeration stations, many refrigerators only use a single sensor to monitor absolute paramet...

Claims

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Application Information

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IPC IPC(8): F25B49/00
Inventor 谷波王志毅黎远光
Owner SHANGHAI JIAO TONG UNIV
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