Home appliance detection system and control method using flammable refrigerant
A technology of detection system and control method, which is applied in the testing of mechanical components, circuit breaker testing, and testing of machine/structural components, etc., can solve the problems of explosion-proof characteristic assessment of uncomponents, and failure to provide test equipment structure and control method. , to achieve the effect of improving the degree of automation
Active Publication Date: 2022-02-18
CHEARI BEIJING CERTIFICATION & TESTING
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Problems solved by technology
[0003] At present, the safety testing of air conditioners, household refrigeration appliances and compressors is usually carried out in accordance with the methods required by the standard GB 4706.1-2005 "Safety of Household and Similar Electrical Appliances Part 1: General Requirements", but this standard does not specify Special requirements for electrical appliances using flammable refrigerants
On the other hand, the standard GB 3836.8-2014 "Explosive Atmospheres Part 8: Equipment Protected by "n" Type" stipulates the explosion-proof test methods for enclosed circuit breakers and non-ignitable components, but the combustible gas used is ethylene or hydrogen The mixture with oxygen has not been evaluated for the explosion-proof characteristics of components in the environment where flammable refrigerants are used, and the structure and control methods of specific test equipment have not been given. Considering the above factors, it is necessary to design a refrigeration appliance dedicated to flammable refrigerants. Advanced safety testing system to further assess the explosion-proof characteristics of the appliance
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[0045] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0046] It should be noted that, in the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other; and, based on the embodiments in the present disclosure, those of ordinary skill in the art obtained without creative work All other embodiments belong to the protection scope of the present disclosure.
[0047] It is noted that the following describes various aspects of the embodiments that are within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and / or function described herein is illustrative only. Based on the present disclosure one skilled in the art should appreciate that an aspect described herein may be implemented independently of any other aspects and that two or more of t...
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The invention provides a household appliance detection system and a control method using flammable refrigerants, comprising: the outlet end of a flammable refrigerant pressure storage tank (8) is sequentially connected to a first stop valve (101), a first pressure reducing valve (201), and then connected to To the inlet end of the first mass flow meter (301), the outlet end of the first mass flow meter (301) is connected to the test chamber (2) through the first electric ball valve (501); the outlet end of the compressed air storage tank (9) Connect the second cut-off valve (102) and the second decompression valve (202) in sequence, and connect to the inlet port of the second mass flow meter (302), and the outlet port of the second mass flow meter (302) passes through the second electric ball valve ( 502) is connected to the test chamber (2). By supplying flammable refrigerant and air to the test chamber (2), the gas composition inside the test chamber (2) can reach a dangerous state that may exist in actual operation, and the movement of the sample to be tested (3) is automatically controlled to realize the operation in a dangerous environment. The purpose of safety testing on samples.
Description
technical field [0001] The invention belongs to the technical field of home appliance testing, and in particular relates to a safety testing system for refrigeration home appliances using flammable refrigerants and a control method thereof. Background technique [0002] The reliability of the refrigeration system is a very important part of refrigeration and air-conditioning products. The reliability of the refrigeration system directly affects the safety, performance and service life of the product. It is one of the indicators that enterprises pay most attention to when designing and developing products. In recent years, with the gradual arrival of refrigerant replacement time, how to reduce the greenhouse effect and slow down global warming has become an urgent problem that the refrigeration and air-conditioning industry needs to face and solve. As an important means to effectively suppress the greenhouse effect, the substitution of environmentally friendly refrigerants ha...
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IPC IPC(8): G01R31/00G01R31/327G01R1/02G01M13/00
CPCG01R31/00G01R31/327G01R1/02G01M13/00
Inventor 蔡宁赵洋杨双刘德义李欣亓新曲宗峰李志强
Owner CHEARI BEIJING CERTIFICATION & TESTING