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Self-adaptation variable volume refrigeration system

A refrigeration system and variable capacity technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of narrow adjustment range and poor adaptability, and achieve the effect of high control accuracy and wide adjustment application range.

Active Publication Date: 2015-07-01
HEFEI GENERAL MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this refrigeration system is that the adjustment range is narrow and the adaptability is poor.

Method used

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  • Self-adaptation variable volume refrigeration system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, an adaptive variable capacity refrigeration system, the refrigeration system includes a compressor 1, a condenser 3 and an evaporator 6, the high-pressure gas discharged from the outlet of the compressor 1 first enters the oil separator 2, and is processed by the oil separator 2 The final high-pressure gas enters the first high-pressure gas pipeline A1 and the second high-pressure gas pipeline A2 respectively; the oil separator 2 is connected to the compressor 1 through an oil return pipeline.

[0050] The outlet of the first high-pressure gas pipeline A1 is connected to the inlet of the condenser 3, that is, the water-cooled condenser, and the high-pressure liquid discharged from the outlet of the condenser 3 is connected to the inlet of the electronic expansion valve 4 through the high-pressure liquid pipeline B1. The low-pressure liquid discharged from the outlet of the electronic expansion valve 4 is connected to the inlet of the evaporato...

Embodiment 2

[0056] Embodiment 2 adds a liquid bypass pipeline B2 for suction cooling on the basis of the pipeline structure of Embodiment 1. The inlet side of the liquid bypass pipeline B2 is connected to the high-pressure liquid pipeline B1, and the liquid bypass pipeline The outlet side of the pipeline B2 communicates with the second high-pressure gas pipeline A2; the liquid bypass pipeline B2 is provided with a suction cooling solenoid valve 13 and a suction cooling thermal expansion valve 14 in series along the liquid flow direction ; The air suction cooling thermal expansion valve 14 and the first hot gas bypass control valve 12 share the pressure taking pipeline F1, and the temperature sensing package 16 of the air suction cooling thermal expansion valve 14 is arranged on the air return pipe on the outlet side of the oil return bend 8 on road E.

[0057] The liquid bypass pipeline B2 intersects with the second high-pressure gas pipeline A2 and then connects with the horizontal confl...

Embodiment 3

[0060] Embodiment 3 adds a gas bypass pipeline H leading to the separator 5 on the basis of the pipeline structure of Embodiment 2, and the gas bypass pipeline H is connected to the second high-pressure gas pipeline A2, and the A solenoid valve 11 and a second hot gas bypass control valve 15 are arranged in series on the gas bypass pipeline H along the direction of gas flow. 7 The low-pressure gas pipeline D on the outlet side is connected.

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Abstract

The invention belongs to the technical field of refrigeration technology, and in particular relates to a self-adaptation variable volume refrigeration system. The refrigeration system is matched with compressor power according to possible maximum heating load under operating environment, the refrigerating capacity is adjusted by controlling liquid flow for refrigeration through the opening of an electronic expansion valve, the suction pressure and suction temperature of a compressor are controlled through effective merging in front of a gas-return pipeline of high pressure liquid inside a liquid bypass pipeline, hot gas inside a second high pressure gas pipeline and low pressure gas inside a low pressure gas pipeline, and then the gas-return pressure at the outlet of an evaporator is controlled through a bypass hot gas and evaporating pressure adjusting valve inside a gas bypass pipeline and the opening of the electronic expansion valve. According to the self-adaptation variable volume refrigeration system, 0% to 100% of stepless adjustable capacity within cooling load range can be better realized, continuous cooling capacity at a cooling-required end can be met, higher control precision is realized, the stability of compressor running is improved, and the service life of compressor is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to an adaptive variable capacity refrigeration system. Background technique [0002] With the wide application of refrigeration technology, the energy consumed by refrigeration equipment is also increasing rapidly. The output of room air conditioners and central air conditioners in urban residential buildings in my country is still increasing year by year, and its growth rate is even higher than the growth rate of my country's GDP, which leads to continuous increase in power load. At present, energy shortage has become a prominent problem restricting my country's economic development. Economic growth and technological development at the cost of energy consumption are not conducive to the strategic requirements of sustainable development. Therefore, the energy saving of refrigeration devices has attracted widespread attention in the industry. The adaptive variable c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/00F25B41/00F25B41/06F25B49/02F25B41/31F25B41/34F25B41/40
CPCY02B30/72Y02B30/70
Inventor 昝世超张伟周俊海刘贵芳张泽国杨厚太孙云
Owner HEFEI GENERAL MACHINERY RES INST
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