Chiller control method and device

A chiller and control method technology, applied in heating methods, mechanical equipment, lighting and heating equipment, etc., can solve problems such as mismatching of unit air supply and air volume

Active Publication Date: 2019-03-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the actual required air volume of the chiller often does not match the air volume supplied by the chiller in the prior art, thereby providing a control method and device for the chiller

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  • Chiller control method and device
  • Chiller control method and device

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Embodiment Construction

[0044] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

[0047] An embodiment of the present invention provides a method for control...

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Abstract

The invention discloses a control method and device of a cooling unit. The method includes the steps that the air supply pressure of a tail end air supply outlet and the return air pressure of a return air inlet of the cooling unit are obtained; the pressure range where the supply air pressure is located is determined, and the pressure range is set according to the required pressure set by users;the fan regulating frequency corresponding to the pressure range where the supply air pressure is located is worked out by means of a preset pressure modification coefficient, the supply air pressureand the return air pressure; and the fan frequency of the cooling unit is regulated through the fan regulating frequency. The supply air pressure and the return air pressure are used as calculation parameters for working out regulating quantities of the fan frequency, namely the fan regulating frequencies, in different pressure ranges, so that control over the air volume of a fan is achieved; andsince the pressure ranges are set according to the required pressure set by the users, the fact that the actual air supply volume of the fan is matched with the required air supply volume is guaranteed.

Description

technical field [0001] The invention relates to the technical field of refrigeration control, in particular to a control method and device for a chiller. Background technique [0002] Chillers have been widely used in various places. For public places where people are relatively concentrated, its application coverage is wider. Take the subway as an example. At present, hundreds of subway lines in dozens of cities have been approved for construction. Due to the special environment in which the subway is located, its cooling and ventilation is a relatively key technical link. At present, the water-cooled direct expansion maglev unit is the best, the direct expansion of the refrigerant is used to evaporate and cool the air after dehumidification, and the full DC frequency conversion unit can solve the problems of the conventional water-cooled chiller, such as poor energy efficiency, complicated engineering installation, and small space. However, due to the large passenger flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F5/00F24F11/64F24F11/72F24F11/77
CPCF24F5/0003Y02B30/70
Inventor 卓明胜陈培生刘洋程琦王朴忠覃业星
Owner GREE ELECTRIC APPLIANCES INC
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