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Air supplement enthalpy control method, equipment and device for two-stage compressor

A two-stage compressor, a technology for supplementing air and increasing enthalpy, which is used in compressors, mechanical equipment, compressors with reversible cycles, etc., and can solve the problems of poor operation stability of the two-stage compressor.

Active Publication Date: 2017-11-21
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method, device and device for controlling air supplementation and enthalpy increase of a two-stage compressor, so as to at least solve the technical problem of poor operation stability of the two-stage compressor in the prior art

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] It should be noted that the terms "first" and "second" in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under ap...

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Abstract

The invention discloses a method, device and device for controlling enthalpy-increasing air supplementation of a two-stage compressor. The air-supplementing enthalpy-increasing control method includes: when the electronic expansion valve for supplementary air needs to be opened, the controller gradually increases the electronic expansion valve for supplementary air in time sequence. The opening of the expansion valve; after the electronic expansion valve of the supplementary air is opened, the detected superheat of the supplementary air of the two-stage compressor is obtained; the opening of the supplementary air electronic expansion valve is adjusted based on the superheat of the supplementary air of the two-stage compressor, where , the air supply electronic expansion valve is set between the medium pressure liquid storage tank and the two-stage compressor. Enthalpy increase. The invention solves the problem of poor operation stability of the two-stage compressor in the prior art.

Description

Technical field [0001] The present invention relates to the field of air conditioning control, and in particular to a method, equipment and device for controlling air supplementation and enthalpy increase of a two-stage compressor. Background technique [0002] The lower the ambient temperature, the greater the demand for air-conditioning heat. At present, single-stage compression heat pumps can only start and operate normally at minus 20 degrees, and the air-conditioning heat is seriously attenuated in low temperature environments, and the heating effect is not It can be ensured that the reliability of the air conditioning unit has also been severely tested. [0003] Compared with the single-stage compression heat pump, the two-stage compression system with jet enthalpy can generate more heat at low temperatures and has higher energy efficiency; and the two-stage compression system can reduce the pressure ratio of the single-stage compressor and reduce the exhaust temperature , A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02
CPCF25B49/02F25B2400/13F25B2400/23F25B2600/2509F25B13/00F25B2400/074F25B2500/19F25B2600/01F25B2600/2513F25B2700/1933F25B2700/21151F25B2700/21152F25B41/34Y02B30/70F25B41/385F25B2500/28
Inventor 赵桓沈军谭锋梁尤轩李鹏飞
Owner GREE ELECTRIC APPLIANCES INC
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