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One-stage throttling incomplete-inter-cooling double-working-condition refrigerating system

A technology of refrigeration system and dual working conditions, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of large one-time investment of the system, and achieve the effects of less one-time investment, avoiding 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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  • One-stage throttling incomplete-inter-cooling double-working-condition refrigerating system
  • One-stage throttling incomplete-inter-cooling double-working-condition refrigerating system

Examples

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Embodiment 1

[0025] figure 1Shown is a schematic diagram of the throttling refrigerating system of the present invention, which is incomplete cooling in the middle of primary throttling and double working condition before cooling. Groups of variable flow compression condensing units, 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 one-way valve 7-1, and a second one-way valve. 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, The sixth valve 8-6, the condenser 9, the intercooler 10 and the throttle valve 11 are composed. 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 ...

Embodiment 2

[0032] figure 2 Shown is a schematic diagram of the throttling refrigerating system of the present invention, which is incompletely cooled in the middle of primary throttling and cooled after cooling. Group variable flow compression condensing unit. 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 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. 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 outlet of the intercoo...

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Abstract

The invention discloses a one-stage throttling incomplete-inter-cooling double-working-condition refrigerating system capable of achieving variable-flow single-stage vapor compression cycle and variable-flow one-stage throttling incomplete inter-cooling. The one-stage throttling incomplete-inter-cooling double-working-condition refrigerating system comprises a plurality of sets of variable-flow compression condensing units which are connected among a high-temperature air suction pipeline, a low-temperature air suction pipeline and a high-pressure liquid supply pipeline in parallel. Each set of variable-flow compression condensing unit is composed of 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 intercooler and a throttling valve. Through opening or closing of each valve, air can be sucked by the high-temperature air suction pipeline so that single-stage compression refrigeration cycle can supply liquid to the high-pressure liquid supply pipeline, and air can also be sucked by the low-temperature air suction pipeline so that double-stage compression refrigeration cycle can 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 incomplete cooling and dual-working conditions that adjusts the cooling capacity 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 switched 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 temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/10F25B41/04F25B41/06F25B41/20F25B41/31F25B41/37
Inventor 杨永安严雷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