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Water chilling unit and air supply control method

A chiller and controller technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of low unit stability and poor air supply effect

Active Publication Date: 2021-04-09
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a water chiller, which is used to solve the technical problems of poor air supply effect and low stability of the chiller in the prior art

Method used

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  • Water chilling unit and air supply control method
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  • Water chilling unit and air supply control method

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0056] In the description of this application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying Refe...

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Abstract

The invention discloses a water chilling unit and an air supply control method. A controller of the water chilling unit is configured to start a compressor and determine the target opening degree of an air supply adjusting valve based on the preset initial opening degree if a compressor starting instruction is detected; and if a preset alarm signal of the compressor is detected or the compressor enters a preset stable state, the target opening degree is determined according to the frequency load of the compressor and the guide vane opening degree of the compressor, wherein the frequency load is the ratio of the running frequency to the full-load frequency of the compressor, so that the phenomena that an economizer carries liquid and partial load air supply does not work due to the fact that traditional air supply is not adjusted are avoided, the attenuation phenomenon of the air supply performance due to the fact that a plate heat exchanger controls the air supply amount according to the air supply superheat degree is also avoided, and the efficiency and the stability of the compressor are improved.

Description

technical field [0001] The present application relates to the field of chiller control, and more specifically, to a chiller and an air supplement control method. Background technique [0002] For the intermediate air supply control scheme with an economizer, most of the current research literatures only give the qualitative analysis of the volumetric compressor, and only give the analysis of the impact of the air supply on the performance of the unit under full load conditions, and give the optimal Qualitative conclusions on air supply pressure and optimal air supply volume do not give specific plans for air supply control under full load and partial load for speed centrifuges, and some literature simply adopts Pm=√Pc×Pe (Pm is the intermediate pressure , Pc is the condensing pressure, Pe is the evaporation pressure) to calculate the optimal intermediate pressure and intermediate temperature, but in the actual operation of the unit, the optimal air supply pressure is constan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B49/02F25B41/20
CPCF25B1/005F25B49/02F25B2600/25Y02B30/70
Inventor 任艳君王锡元吉磊邵存东
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST