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Water chilling unit control method and device and water chilling unit

A chiller and cooling water technology, applied in the field of chiller control and chiller, can solve problems such as easy damage and achieve the effect of solving easy damage

Active Publication Date: 2021-03-09
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a chiller control method, device, and chiller to at least solve the problem in the prior art that the cooling water circulation system of the evaporative chiller is easily damaged under low temperature conditions

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  • Water chilling unit control method and device and water chilling unit
  • Water chilling unit control method and device and water chilling unit
  • Water chilling unit control method and device and water chilling unit

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than 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.

[0025] refer to figure 1 , is a schematic structural diagram of the water chiller provided by the embodiment of the present invention. The water chiller in the embodiment of the present invention has a natural cooling function, and the chiller includes: a natural refrigeration cycle and a compressor refrigeration cycle. The compressor refrigeration cycle circuit includes: compressor 1, evaporative condenser 2, electronic expansion valve...

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Abstract

The invention discloses a water chilling unit control method and device and a water chilling unit. The water chilling unit comprises a natural refrigeration circulation loop and a compressor refrigeration circulation loop, a cooling water circulation system in the compressor refrigeration circulation loop is provided with an anti-freezing device, and the method comprises the steps that the temperature of the environment where a condenser of the water chilling unit is located is monitored; And if the environment temperature is smaller than or equal to a first preset temperature, the natural refrigeration circulation loop is controlled to conduct refrigeration, the compressor refrigeration circulation loop is closed, and the anti-freezing device is controlled to conduct anti-freezing according to the environment temperature. Under the working condition that the environment temperature is low, the anti-freezing device can be used for conducting anti-freezing on the cooling water circulation system, and the situation that under the working condition of winter seasons, cooling water frosts and freezes, and consequently a cooling circulation water pump and a valve are damaged is prevented.

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] Due to the huge potential of energy efficiency, evaporative cooling chillers have more and more demands for their use. The chillers with free cooling function are especially suitable for year-round cooling. The evaporative chiller uses an evaporative condenser. The evaporative condenser absorbs the heat of the high-temperature gaseous refrigerant in the coil when the spray water outside the coil partially evaporates during refrigeration, so that the refrigerant in the tube is gradually cooled from the gaseous state to A device in liquid form. The special cooling form of the evaporative condenser cannot adapt to the cooling demand under low temperature conditions. In the winter season, because the ambient temperature is too low, the cooling water circulation system of the evaporative condenser i...

Claims

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Application Information

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IPC IPC(8): F24F5/00F24F11/64F24F11/85F24F110/10
CPCF24F5/001F24F5/0035F24F11/64F24F11/85F24F2110/10
Inventor 刘华刘洋卓明胜陈培生程琦
Owner GREE ELECTRIC APPLIANCES INC
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