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A chiller control method, device and chiller

A chiller and chilled water technology, applied in heating and ventilation control systems, control input involving air characteristics, space heating and ventilation control input, etc., to achieve both cooling demand and energy consumption, safe, reliable, efficient and energy-saving cooling

Active Publication Date: 2021-08-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a chiller control method, device, and chiller to at least solve the problem in the prior art of how to efficiently and energy-savingly refrigerate a chiller that includes at least two refrigeration modules and has a natural cooling function

Method used

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  • A chiller control method, device and chiller
  • A chiller control method, device and chiller
  • A chiller control method, device and chiller

Examples

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Effect test

Embodiment 1

[0042] This embodiment provides a chiller control method, aiming at a chiller that includes at least two refrigeration modules and has a natural cooling function, and can realize cooling in a transitional season in a safe, reliable, efficient and energy-saving manner.

[0043] The water chiller includes at least two refrigeration modules, and each of the refrigeration modules includes: a compressor refrigeration cycle, a natural cooling cycle, a chilled water inlet and a chilled water outlet, wherein the compressor refrigeration cycle of the same refrigeration module The loop and the natural cooling circulation loop share the chilled water inlet and chilled water outlet. The refrigeration module can be refrigerated through the compressor refrigeration cycle, that is, it operates in the compressor refrigeration mode, and the refrigeration module can also be refrigerated through the natural cooling cycle, that is, it operates in the natural cooling mode. Specifically, the refrig...

Embodiment 2

[0092] Based on the same inventive concept, this embodiment provides a chiller control device, which can be used to implement the chiller control method described in the above embodiments. The device can be realized by software and / or hardware, and generally the device can be integrated into the controller of the chiller.

[0093] Figure 4 It is a structural block diagram of the chiller control device provided by Embodiment 2 of the present invention, as Figure 4 As shown, the device includes:

[0094] An acquisition module 41, configured to acquire the chilled water target outlet temperature of the chiller, the ambient temperature of the chiller, and the actual load demand of the chiller;

[0095] The control module 42 is configured to control whether each of the refrigeration modules is turned on and the operating mode after the turning on according to the target outlet temperature of the chilled water, the ambient temperature and the actual load demand, wherein the oper...

Embodiment 3

[0121] This embodiment provides a chiller, including: the chiller control device described in the second embodiment above and at least two refrigeration modules, each of which includes: a compressor refrigeration cycle, a natural cooling cycle, a refrigeration The water inlet and the chilled water outlet, wherein, the compressor refrigeration cycle and the natural cooling cycle of the same refrigeration module share the chilled water inlet and the chilled water outlet.

[0122] Each refrigeration module is connected in series in sequence, wherein, among the two adjacent refrigeration modules, the chilled water outlet of the former refrigeration module is connected to the chilled water inlet of the latter refrigeration module, and the chilled water inlet of the first refrigeration module serves as the cooling water supply of the whole chiller. The water inlet and the chilled water outlet of the last refrigeration module serve as the chilled water outlet of the whole chiller.

...

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Abstract

The invention discloses a chiller control method, device and chiller. Among them, the water chiller includes at least two refrigeration modules, and each refrigeration module includes: compressor refrigeration cycle, natural cooling cycle, chilled water inlet and chilled water outlet, compressor refrigeration cycle and natural cooling of the same refrigeration module The circulation circuit shares the chilled water inlet and the chilled water outlet; the method includes: obtaining the chilled water target outlet temperature of the chiller, the ambient temperature of the chiller, and the actual load demand of the chiller; according to the chilled water target outlet temperature, ambient temperature and The actual load demand controls whether each refrigeration module is turned on and the operation mode after it is turned on, wherein the operation mode is a compressor cooling mode or a natural cooling mode. The present invention can reasonably control the operation mode of each refrigeration module in the water chiller in the transition season, taking into account both refrigeration demand and energy consumption, and realizes high-efficiency and energy-saving refrigeration.

Description

technical field [0001] The invention relates to the technical field of chillers, in particular to a control method and device for chillers and chillers. Background technique [0002] Some chiller usage scenarios require year-round cooling, such as data center chillers, the combination of natural cooling and mechanical cooling can effectively utilize the outdoor cold source for cooling in severe winter areas, and improve the problem of high energy consumption for year-round cooling in data centers . [0003] However, for chillers that contain at least two refrigeration modules and have free cooling functions, how to configure mechanical refrigeration and free cooling in transitional seasons in order to cool safely, reliably and efficiently has not yet proposed an effective solution. Contents of the invention [0004] Embodiments of the present invention provide a chiller control method, device, and chiller to at least solve the problem in the prior art of how to efficientl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/46F24F11/65F24F11/64F24F11/70F24F11/61F24F5/00F24F140/20F24F110/10F24F140/50
CPCF24F5/001F24F5/0046F24F11/46F24F11/61F24F11/64F24F11/65F24F11/70F24F2110/10F24F2140/20F24F2140/50
Inventor 李娜程琦刘思源路朋博
Owner GREE ELECTRIC APPLIANCES INC
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