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Multi-cycle variable flow refrigerating system

A refrigeration system and variable flow technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of experimental effect influence, high operating cost, large temperature fluctuation, etc., to facilitate inter-stage energy adjustment and reduce initial investment , The effect of reducing the operating cost of the system

Pending Publication Date: 2018-07-03
TIANJIN UNIV OF COMMERCE
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the corresponding refrigeration cycle method is generally adopted according to the main needs, which cannot be changed according to the change of working conditions, and the operating cost is high and the temperature fluctuates greatly.
Especially for the comparative experiments of the experimental system, they are designed separately, and the experimental results are affected by the system composition.

Method used

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  • Multi-cycle variable flow refrigerating system
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Examples

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The schematic diagram of the multi-cycle variable flow refrigeration system of the present invention is as follows Figure 1-Figure 2 As shown, it includes refrigeration compressor unit 1, three-way valve 2, heat exchanger 3, first throttle valve 4-1, second throttle valve 4-2, condenser 6, evaporator 5, first valve 7- 1. The second valve 7-2 and the third valve 7-3. In this embodiment, the refrigerating compressor unit 1 includes a plurality of compressors 8, and the exhaust end of each compressor 8 is connected in parallel and divided into a first exhaust port 1-2 and a second exhaust port 1-2. 3. After the suction end of each compressor is connected in parallel, it is divided into a first suction interface 1-1 and a second suction interface 1-4, between the suction ends of two adjacent compressors and Regulating valves 9 are conne...

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Abstract

The invention discloses a multi-cycle variable flow refrigerating system and aims at providing a system capable of reducing the initial investment and operating cost. A first exhaust port of a refrigerating compressor unit is connected with a second port of a heat exchanger through a second valve. A third port of the heat exchanger is connected with a first port of a three-way valve. A second portof the three-way valve is connected with one end of a second throttle valve and one end of a third valve correspondingly. The other end of the second throttle valve is connected with a first suctionport through an evaporator. The other end of the third valve is connected with a first port of the heat exchanger and one end of a first valve. The other end of the first valve is connected with a third port of the three-way valve in parallel and then is connected with a second suction port. A fourth port of the heat exchanger is connected with a second exhaust port through a first throttle valveand a condenser. The multi-cycle variable flow refrigerating system is flexible and convenient to switch, the initial investment of the system can be reduced, the system operation cost can be lowered,and the system is more stable in operation.

Description

technical field [0001] The invention relates to the technical field of refrigeration, and more specifically relates to a multi-cycle variable flow refrigeration system. Background technique [0002] When cooling at a lower temperature is required, the refrigeration system mainly has three circulating refrigeration systems according to different working conditions: [0003] Single-stage cycle refrigeration system: mainly suitable for winter cooling needs. In winter, the outdoor ambient temperature is not high, and the temperature difference between the heat sources of the refrigeration system is small, and single-stage compression can be realized. Generally, multi-head parallel connection is adopted, and the flow adjustment is realized by controlling the number of compressors put into operation. [0004] Two-stage cycle refrigeration system: suitable for working conditions with large temperature differences between heat sources in summer. In summer, the outdoor ambient temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/04F25B41/06F25B1/10F25B7/00F25B13/00F25B41/20F25B41/31F25B41/37
CPCF25B1/10F25B7/00F25B13/00F25B2313/02731F25B2600/25F25B2400/075F25B41/30F25B41/20
Inventor 严雷李瑞申赵瑞昌孔帅赖峰刘园
Owner TIANJIN UNIV OF COMMERCE
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