A kind of air supplement adjustment method

An adjustment method and a technology for adjusting valves, which are applied to heating methods, air-conditioning systems, lighting and heating equipment, etc., and can solve problems such as the lack of adjustable control of air supplementation

Active Publication Date: 2022-01-07
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for adjusting air supply to solve the technical problem in the prior art that the chiller does not perform adjustable control on air supply

Method used

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  • A kind of air supplement adjustment method
  • A kind of air supplement adjustment method
  • A kind of air supplement adjustment method

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0044] The invention provides a water chiller, comprising a two-stage compressor 1, a condenser 3, a flasher 4 and an evaporator 2, an air supply pipe is arranged between the flasher 4 and the two-stage compressor 1, and the outlet of the air supply pipe Connected between the first-stage impeller 12 and the second-stage impeller 13 of the two-stage compressor 1, a regulating valve 5 is arranged in the air supply pipe, and the regulating valve 5 is an electric bu...

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Abstract

The invention provides an air supplement adjustment method, relates to the technical field of air-conditioning equipment, and solves the technical problem that the existing chiller does not perform adjustable control on the air supplement. The water chiller includes a two-stage compressor, a condenser, a flasher and an evaporator. There is an air supply pipe between the flasher and the two-stage compressor. The outlet of the air supply pipe is connected to the first-stage impeller and the second-stage impeller of the two-stage compressor. Between the stage impellers, a regulating valve is set in the air supply pipe; and a first pressure sensor is set in the condenser, a second pressure sensor is set in the evaporator, and a third pressure sensor is set in the flasher. During the normal operation of the unit, the regulating valve is controlled by comparing the flash pressure and the intermediate pressure. If the flash pressure is less than or equal to the intermediate pressure, the regulating valve is closed to reduce the amount of air supply. If the flash pressure is greater than the intermediate pressure, the regulating valve is opened to increase. The amount of supplementary air makes the pressure ratio of the first-stage impeller and the second-stage impeller more matching, and improves the operating energy efficiency of the chiller.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to an air supplement adjustment method. Background technique [0002] At present, most centrifugal chillers use two-stage compressors. In order to further improve the energy efficiency of unit operation, an intermediate economizer (i.e. flasher) is provided. The liquid refrigerant at the bottom of the condenser enters the flasher after a first-stage throttling, and the liquid refrigerant in the flasher enters the evaporator after a second throttling, and the gas refrigerant is directly fed into the second-stage impeller of the compressor for compression . Since the part of the gas fed into the compressor from the flasher is not compressed by the first-stage impeller, the power consumption of this part of the compressor is saved and the energy efficiency of the unit is improved. [0003] The applicant finds that the prior art has at least the following technical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/10F25B49/02F24F5/00
CPCF25B1/10F25B49/02F24F5/001
Inventor 张治平周宇黄成武刘贤权
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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