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Air-cooled heat pump unit heat recovery refrigeration system and heat recovery refrigeration method

An air-cooled heat pump and refrigeration system technology, applied in the direction of heating and refrigeration combination, refrigerator, refrigeration components, etc., can solve the difficulty of controlling the heat recovery amount and ratio of the heat exchanger, poor adaptability to compressor load changes, and complicated control methods and other issues, to achieve the effect of ensuring the refrigerant circulation, ingenious design, and reasonable structure

Inactive Publication Date: 2015-12-02
柳州市智蓝制冷有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In actual operation, the above existing technologies have certain limitations. For example, it is difficult to control the heat recovery amount and ratio of the heat exchanger; the heat recovery is indirectly controlled through the fan control and valve control of the air-cooled heat exchanger. The volume control method is complicated, and the on-site debugging is difficult; the adaptability to the change of working conditions and the load of the compressor is poor

Method used

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  • Air-cooled heat pump unit heat recovery refrigeration system and heat recovery refrigeration method

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Embodiment Construction

[0022] Refer to attached figure 1 , an air-cooled heat pump unit heat recovery refrigeration system of the present invention includes a compressor 1, a water-side heat exchanger 2, an air-cooled heat exchanger 3, a heat recovery heat exchanger 4, a gas-liquid separator 5, and a four-way reversing valve 6. The first heat recovery three-way valve 7, the second heat recovery three-way valve 8, the cooling check valve 9, the heating check valve 10, the cooling expansion valve 11, the heating expansion valve 12, the liquid stop valve 13, the drying Filter 14, exhaust angle valve 15, liquid discharge check valve 16 and liquid discharge solenoid valve 17;

[0023] The exhaust port of the compressor 1 is connected to the air-cooled heat exchanger 3 through the exhaust angle valve 15, the D port of the four-way reversing valve 6, and the C port of the four-way reversing valve 6; Port E is connected to the suction port of water side heat exchanger 2; The S port is connected; the C por...

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Abstract

The invention relates to a heat recovery system, in particular to a heat recovery refrigerating system and method of an air-cooled heat pump unit. The heat recovery refrigerating system comprises a compressor, a water-side heat exchanger, an air-cooled heat exchanger, a heat recovery heat exchanger, a gas-liquid separator, a four-way reversing valve, a first heat recovery three-way valve, a second heat recovery three-way valve, a refrigerating one-way valve, a heating one-way valve, a refrigerating expansion valve, a heating expansion valve, a liquid-path stop valve, a drying filter, an exhausting angle valve, a liquid discharge one-way valve and a liquid discharge solenoid valve. The heat recovery refrigerating method is implemented in a refrigerating running mode and a heating mode so as to realize refrigerating cycle and heating cycle. By additionally arranged the two heat recovery three-way valves in the air-cooled heat pump unit, switching between a heat recovery closed mode, a parallel-connection full-heat recovery mode and series-connection partial heat recovery mode can be realized.

Description

technical field [0001] The invention relates to a heat recovery system, in particular to a heat recovery refrigeration system of an air-cooled heat pump unit and a heat recovery refrigeration method thereof. Background technique [0002] Heat recovery systems are usually used in air-cooled heat pump (chiller) units and water-cooled chillers. When heat recovery systems are applied to air-cooled heat pump (chiller) units, they are usually designed separately for full heat recovery units and partial heat recovery units. Full / latent heat The recovery unit can adopt the following design methods: 1. The heat recovery heat exchanger and the air-cooled heat exchanger are completely connected in parallel, either the heat recovery heat exchanger is running, or the air-cooling heat exchanger is running, and a heat recovery storage liquid is added at the same time 2. The heat recovery heat exchanger and part of the air-cooled heat exchanger are connected in parallel. When the heat recov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B29/00F25B41/04F25B41/20
Inventor 商萍君王雷高登山
Owner 柳州市智蓝制冷有限责任公司
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