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Chiller and its control method

A control method and technology for chillers, which are applied to control inputs involving air characteristics, heating and ventilation control systems, space heating and ventilation control inputs, etc. , the effect of improving work performance

Active Publication Date: 2018-12-25
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An embodiment of the present invention provides a chiller and its control method to solve the problem in the prior art that the actual operating load of the compressor does not match the condensation load of the evaporative condenser, which reduces the working performance of the chiller

Method used

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  • Chiller and its control method
  • Chiller and its control method

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0020] Please refer to figure 1 As shown, according to the embodiment of the present invention, the chiller is characterized in that it includes a compressor 1, an evaporative condensing assembly and an evaporator 2 arranged in sequence, and the evaporative condensing assembly includes a plurality of evaporative condensers 3 arranged in parallel, each evaporator The parallel branch where the condenser 3 is located is provided with a control valve 4 for controlling the on-off of the parallel branch.

[0021] By controlling the on and off of the control valve 4, the number of evaporative condensers 3 participating in evaporative condensation can be controlled, so that the condensation load of the evaporative condenser 3 matches the operating load of the compressor 1, and the working perf...

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Abstract

The invention discloses a water chilling unit and a control method thereof. The control method of the water chilling unit comprises the steps of S1, determining the actual operation load of a compressor; and S2, comparing the actual operation load with a preset threshold value, starting or stopping one or a plurality of groups of evaporative condensers according to the comparison result. According to the control method of the water chilling unit disclosed by the invention, the problem that the working performance of the water chilling unit is lowered because the actual operation load of the compressor is not matched with the condensation load of the evaporative condensers in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a water chiller and a control method thereof. Background technique [0002] Evaporative cooling is between air cooling and water cooling. It is composed of heat exchanger, fan, cooling water pump and cooling water spray device. Its working principle is: after the high-pressure superheated refrigerant gas discharged from the compressor enters the evaporative condenser, it passes through The circulating cooling water and spraying device form a uniform water film on the surface of the heat exchanger. The cooling water film absorbs the heat in the refrigerant, evaporates to form water vapor, and is discharged to the ambient atmosphere by the fan to realize the condensation process. [0003] However, in the actual working process, there is often a problem that the actual operating load of the compressor does not match the condensing load of the evaporative condenser, which re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F5/00F24F11/00
CPCF24F5/0035F24F11/30F24F2110/00
Inventor 黄凯亮钟海玲孙雷鸣胡乾龙李新东
Owner GREE ELECTRIC APPLIANCES INC