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Control method and device for central air-conditioning system

A technology of a central air-conditioning system and a control method, applied in the field of control methods and devices of a central air-conditioning system, can solve problems such as large water temperature fluctuation and user discomfort, and achieve the effects of reducing water temperature fluctuation and improving user experience.

Active Publication Date: 2020-08-18
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a control method and device for a central air-conditioning system, aiming to solve the problem of large water temperature fluctuations caused by the start-up of the chiller in the chiller unit in the prior art, which brings discomfort to the user

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  • Control method and device for central air-conditioning system
  • Control method and device for central air-conditioning system
  • Control method and device for central air-conditioning system

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Embodiment Construction

[0047] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. Herein, various embodiments may be referred to individually or collectively by the term "invention", which is for convenience only and is not intended to automatically limit the scope of this application if in fact more than one invention is disclosed. A single invention or inventive concept. Herein, relational terms such...

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Abstract

The invention discloses a control method for a central air conditioning system, and belongs to the technical field of air conditioning. The central air system comprises an indoor unit and an outdoor unit, wherein the outdoor unit comprises a cold water unit which is composed of one or more variable frequency compressors and one or more constant frequency compressors. The control method comprises the steps of acquiring the current water inlet temperature Tn and the water inlet temperature Tn-1 obtained at the last time; determining the compensation value of the working frequency of the cold water unit according to the Tn and the Tn-1; and adjusting the working frequencies of the variable frequency compressors according to the compensation value and / or the starting quantity of the constant frequency compressors. The invention further discloses a control device for the central air conditioning system. According to the control method and device for the central air conditioning system, theproblem that the whole machine is started in the process of adjusting the cold water unit is solved, water temperature fluctuation is reduced, and user experience is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method and device for a central air conditioning system. Background technique [0002] Air-cooled chillers are gaining market share with the advantages of energy saving, environmental protection, flexible combination, and convenient installation. They provide cold water to the air-conditioning system in the cooling season and hot water to the air-conditioning system in the heating season. They are ideal air-conditioning cold and heat sources. . Generally, the central air-conditioning water system is composed of multiple chillers, refrigeration pumps, cooling pumps, cooling towers, etc. Each of the different equipment has the best operating conditions under different circumstances. The existing central air-conditioning system mostly adopts a constant flow system, and the design margin of the maximum cooling load is large. However, the traditional control strate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/86F24F11/89F24F11/65F24F11/64F25B49/02
CPCF25B49/022
Inventor 刘玉辉程绍江时斌邵文俊
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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