Variable working condition air-cooled chiller unit capable of conducting refrigeration running all year round

A chiller and air-cooled condenser technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as large liquid receiver, difficult oil return, affecting the cooling effect of the unit and safe operation

Inactive Publication Date: 2015-05-13
上海康赛制冷设备有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the ambient temperature changes, the condensing pressure of the air-cooled unit will change with the change of the ambient temperature, especially in winter when the ambient temperature is very low, the unit still needs to be operated in refrigeration, and the operation of the unit at a low compression ratio will cause The pressure difference before and after the throttling device is too low, and the temperature such as difficulty in oil return seriously affects the cooling effect and safe operation of the unit
[0003] While the prior art uses differential pressure maintenance valves to maintain adequate condenser pressure for the valves, large receivers and excess refrigerant are required

Method used

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  • Variable working condition air-cooled chiller unit capable of conducting refrigeration running all year round

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Embodiment Construction

[0016] figure 1 It is a structural schematic diagram of an air-cooled water chiller with variable working conditions for year-round cooling operation provided by an embodiment of the present invention.

[0017] Such as figure 1 As shown, the present invention provides an air-cooled water chiller with variable working conditions for cooling operation throughout the year. The unit includes a compressor 1, an air-cooled condenser 2, an accumulator 3, a dry filter 4, a thermal expansion valve 7, an evaporator 11, a pressure sensor 6 and a liquid level sensor 10, 1# controlled by a controller 5, 2# two proportional two-way valves; 1# proportional two-way valve 8 is connected to the air-cooled condenser 2; 2# proportional two-way valve 9 is connected to the fluorine inlet of the liquid receiver 3; compressor 1, controller 5, 1# proportional two-way valve 8, air-cooled condenser 2, liquid receiver 3, dry filter 4, thermal expansion valve 7 and the fluorine inlet of the evaporator 1...

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Abstract

The invention relates to a variable working condition air-cooled chiller unit capable of conducting refrigeration running all year round. Two proportional two-way valves are used for adjusting the liquid level and pressure of a liquid storage device; meanwhile, running of a radiator under condensing pressure is adjusted according to the liquid level of the liquid storage device; as a result, sufficient condensing pressure can be guaranteed just through a small amount of refrigerant and the liquid storage device with a small size, and the purpose of conducing refrigeration all year round is achieved.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to an air-cooled water chiller with variable working conditions for year-round refrigeration operation. Background technique [0002] When the ambient temperature changes, the condensing pressure of the air-cooled unit will change with the change of the ambient temperature, especially when the ambient temperature is very low in winter, the unit still needs to operate in refrigeration, and the operation of the unit at a low compression ratio will cause The pressure difference before and after the throttling device is too low, and the temperature such as difficulty in oil return seriously affects the cooling effect and safe operation of the unit. [0003] Although the prior art uses a pressure differential maintenance valve to maintain sufficient condenser pressure for the valve, it requires a large liquid receiver and excess refrigerant. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B49/02
CPCF25B49/02F25B41/20F25B41/31
Inventor 张亚樊雷郭绪艾
Owner 上海康赛制冷设备有限公司
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