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Control method and device applied to air-cooling cold water heat recovery unit

An air-cooled cold water and heat recovery technology, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as secondary evaporation and unit failure to operate normally, improve efficiency and stability, and solve secondary evaporation Effect

Active Publication Date: 2017-09-15
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a control method and device applied to an air-cooled cold water heat recovery unit to at least solve the problem in the prior art that secondary evaporation occurs during the operation of an air-cooled cold water heat recovery unit, thereby causing the unit to fail to operate normally

Method used

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  • Control method and device applied to air-cooling cold water heat recovery unit
  • Control method and device applied to air-cooling cold water heat recovery unit
  • Control method and device applied to air-cooling cold water heat recovery unit

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Embodiment 1

[0024] The control method applied to the air-cooled cold water heat recovery unit provided by the present invention will be described below with reference to the accompanying drawings.

[0025] figure 1 It shows an optional structural diagram of the air-cooled cold water heat recovery unit in the prior art, such as figure 1 As shown, the air-cooled cold water heat recovery unit includes a compressor 1 , an oil separator 2 , a heat recovery shell tube 3 , a condenser 4 (fin heat exchanger) and an evaporator 5 . When the air-cooled cold water heat recovery unit is running, due to the large temperature difference between the refrigerant and the water at the heat recovery shell tube, the heat exchange effect is very good, resulting in the high-temperature and high-pressure refrigerant coming out of the heat recovery shell tube into a medium-temperature high-pressure refrigerant. Refrigerant, and there will be a part of the pressure drop in the process of entering the condenser. I...

Embodiment 2

[0044] Based on the control method applied to the air-cooled cold water heat recovery unit provided in the above-mentioned embodiment 1, the optional embodiment 2 of the present invention also provides a control device applied to the air-cooled cold water heat recovery unit, specifically, Figure 4 shows an optional structural block diagram of the device, such as Figure 4 As shown, the device includes: an acquisition unit 42, which is used to acquire the pressure operating parameters and temperature operating parameters at the condenser of the unit in response to the triggered unit heat recovery function start command; an adjustment unit 44, connected to the acquisition unit 42, for The obtained pressure operating parameters and temperature operating parameters are used to adjust the operating number of the fans of the unit.

[0045] Further, the acquisition unit includes: a first acquisition module, used to acquire the ambient temperature at the condenser of the unit; a seco...

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Abstract

The invention discloses a control method and device applied to an air-cooling cold water heat recovery unit. The method comprises the steps that in response to a triggered unit heat recovery function starting instruction, the pressure operation parameter and the temperature operation parameter of a unit condenser are obtained; and according to the obtained pressure operation parameter and temperature operation parameter, the operating quantity of draught fans of the unit is adjusted. According to the control method and device applied to the air cooling cold water heat recovery unit, the problem that in the prior art, an air-cooling cold water heat recovery unit generates secondary evaporation in operation, and the unit cannot normally operate accordingly is solved, and the efficiency and stability of the unit are improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method and device applied to an air-cooled cold water heat recovery unit. Background technique [0002] The refrigeration process of the chiller is a heat exchange process. During the refrigeration process, a large amount of waste heat must be generated, which needs to be dissipated through the condenser to reduce the temperature of the compressor. Ordinary water chillers dissipate this part of the heat into the air through cooling towers, fans or other forms, but in real life, hot water (such as domestic hot water for bathing) needs to be specially burned, wasting energy and labor The laborious, heat recovery chiller is developed and produced under this demand. [0003] The structure of the air-cooled cold water heat recovery unit in the prior art is as follows: figure 1 As shown, it includes a compressor 1 , an oil separator 2 , a heat recovery shell and tu...

Claims

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Application Information

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IPC IPC(8): F25B49/02
CPCF25B49/02F25B2600/111F25B2700/195F25B2700/2106F25B2700/2116
Inventor 刘思源程琦黄凯亮钟海玲
Owner GREE ELECTRIC APPLIANCES INC
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