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Single-throttling complete-inter-cooling dual-working-condition refrigerating system

A technology of refrigeration system and dual working conditions, used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of large one-time investment in the system, and achieve the effect of less one-time investment, avoiding temperature fluctuations and constant temperature

Active Publication Date: 2015-04-08
TIANJIN BOJUYUAN LIGHT IND DAILY CHEM IDENTIFICATION SCI RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the parallel system of frozen cold storage (lower suction temperature, usually requires a two-stage compression system) and cold storage (higher suction temperature, usually requires a single-stage vapor compression system), it is often necessary to use single and double-stage vapor compression systems. Separately configured, the one-time investment of the system is large, and the adjustment of cooling capacity is completely realized by starting and stopping

Method used

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  • Single-throttling complete-inter-cooling dual-working-condition refrigerating system

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Embodiment 1

[0025] figure 1Shown is a schematic diagram of the throttling refrigerating system in the present invention with one throttling, intermediate complete cooling, dual working conditions and pre-cooling throttling, including multiple groups connected in parallel between the high-temperature suction pipeline 1, the low-temperature suction pipeline 2 and the high-pressure liquid supply pipeline 3 Variable flow compression condensing unit. Each group of variable flow compression condensing units consists of a low-pressure constant-flow compressor 4, a low-pressure variable-flow compressor 5, a high-pressure variable-flow compressor 6, a first check valve 7-1, a second check valve 7-2, and a second check valve 7-2. Three check valves 7-3, first valve 8-1, second valve 8-2, third valve 8-3, fourth valve 8-4, fifth valve 8-5, sixth valve 8-6, Condenser 9, intercooler 10 and throttle valve 11 are composed. The inlet of the first valve 8-1 in each group of variable flow compression con...

Embodiment 2

[0032] figure 2 Shown is a schematic diagram of the throttling refrigeration system in the present invention, which is once throttling, intermediate, complete cooling, dual working conditions, and then throttling after cooling. A group of variable flow compression condensing units, each group of variable flow compression condensing units includes a low-pressure constant-flow compressor 4, a low-pressure variable-flow compressor 5, a high-pressure variable-flow compressor 6, a first one-way valve 7-1, a second one-way Directional valve 7-2, third one-way valve 7-3, first valve 8-1, second valve 8-2, third valve 8-3, fourth valve 8-4, fifth valve 8-5, Sixth valve 8-6, condenser 9, intercooler 10 and throttle valve 11. The inlet of the first valve 8-1 in each group of variable flow compression condensing units is connected to the high-temperature suction pipeline 1, and the inlet of the second valve 8-2 is connected to the low-temperature suction pipeline 2 , the pipe-side out...

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Abstract

The invention discloses a single-throttling complete-inter-cooling dual-working-condition refrigerating system which is capable of realizing variable-flow single-stage vapor compression cycles and variable-flow single-throttling complete inter-cooling two-stage compression cycles. The single-throttling complete-inter-cooling dual-working-condition refrigerating system comprises multiple groups of variable-flow compression condenser units which are parallelly connected among a low-temperature air suction pipeline, a high-temperature air suction pipeline and a high-pressure liquid supply pipeline, and each group of variable-flow compression condenser units comprises a low-pressure constant-flow compressor, a low-pressure variable-flow compressor, a high-pressure variable-flow compressor, a first one-way valve, a second one-way valve, a third one-way valve, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a condenser, an intermediate cooler and a throttling valve. Via opening and closing of the multiple valves, air can be sucked via the high-temperature air suction pipeline to realize single-stage compression refrigeration cycles so as to supply liquid to the high-pressure liquid supply pipeline, and the air can be also sucked via the low-temperature air suction pipeline to realize two-stage compression refrigeration cycles so as to supply liquid to the high-pressure liquid supply pipeline.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a two-stage compression refrigeration system with primary throttling, intermediate complete cooling, dual working conditions, and refrigeration capacity adjustment by changing the refrigerant flow rate. Background technique [0002] The existing two-stage compression refrigeration system used for freezing cold storage usually uses temperature control to start and stop the compressor. When the temperature of the cold storage reaches the temperature set by the thermostat, the refrigeration system stops working; when the temperature rises to the upper limit set by the thermostat, The cooling system is on. There is a contradiction in such a system. When the temperature difference between startup and shutdown is relatively large, the food stored in the frozen storage will lose water and dryness due to different freezing rates, and food quality will decline; when the temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/10F25B41/04F25B41/06F25B41/20F25B41/31
CPCY02B30/72Y02B30/70
Inventor 杨永安刘圣春阳飞王丹丹邓萍萍李照凯乔晓光徐浩
Owner TIANJIN BOJUYUAN LIGHT IND DAILY CHEM IDENTIFICATION SCI RES