A method for controlling the exhaust temperature of an air conditioner

A technology of exhaust temperature and control method, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of reducing the service life of compressors, weak flammability, chlorine content, etc. Effect

Active Publication Date: 2020-05-29
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Problems solved by technology

[0002] At present, the main refrigerants for air-cooled heat pumps are R22 and R410A, both of which are transitional refrigerants. The main problem of R22 is that it contains chlorine, which will damage the atmospheric ozone layer, and it needs to be gradually withdrawn from the application field of air conditioning; R410A is a mixed working fluid, with a GWP of 2088. In addition, the high price will gradually withdraw from the application field of air conditioners
[0003] At present, the main refrigerant is R32, that is, difluoromethane, which does not contain chlorine, does not destroy the ozone layer, and is relatively low in price. The difficulty lies in its weak flammability and high exhaust temperature
Excessive discharge temperature will accelerate the aging of related components of the compressor, and the lubrication system of the compressor will fail, reducing the service life of the compressor.

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  • A method for controlling the exhaust temperature of an air conditioner
  • A method for controlling the exhaust temperature of an air conditioner
  • A method for controlling the exhaust temperature of an air conditioner

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Embodiment Construction

[0018] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. Herein, various embodiments may be referred to individually or collectively by the term "invention", which is for convenience only and is not intended to automatically limit the scope of this application if in fact more than one invention is disclosed. A single invention or inventive concept. Herein, relational terms such...

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Abstract

The invention discloses an air conditioner and an exhaust gas temperature control method thereof. The exhaust gas temperature control method of the air conditioner comprises the steps that a first temperature difference is obtained; a second temperature difference is obtained; and the opening degree of a control valve is adjusted according to the first temperature difference and the second temperature difference, specifically, the first temperature difference serves as the difference value between a current exhaust gas temperature and a target exhaust gas temperature, and the second temperature difference is used as the difference value between the current first temperature difference and the last first temperature difference. According to the exhaust gas temperature control method of the air conditioner, the exhaust gas temperature of a compressor can be effectively controlled, and the service life of the compressor is prolonged.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method for controlling the exhaust temperature of an air conditioner. Background technique [0002] At present, the main refrigerants for air-cooled heat pumps are R22 and R410A, both of which are transitional refrigerants. The main problem of R22 is that it contains chlorine, which will damage the atmospheric ozone layer, and it needs to be gradually withdrawn from the application field of air conditioning; R410A is a mixed working fluid, with a GWP of 2088. In addition, the high price will gradually withdraw from the application field of air conditioners. [0003] At present, the main refrigerant is R32, that is, difluoromethane, which does not contain chlorine, does not destroy the ozone layer, and is relatively low in price. The difficulty lies in its weak flammability and high exhaust temperature. Excessive discharge temperature will accelerate the aging of rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02
CPCF25B49/02F25B49/022F25B2600/25F25B2700/21152
Inventor 连建春杨文钧朱豪李敬胜景延芹杜亮
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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