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Refrigeration/heating system with inside and outside heat exchanger volume ratio variable

A heating system and outdoor heat exchanger technology, applied in the direction of heating and cooling combination, refrigerator, refrigeration components, etc., can solve the problems of mismatch between internal and external machine systems, heating energy efficiency is not as good as cooling energy efficiency, etc., to reduce defrosting Difficulty, reduce condensing pressure, increase the effect of low-temperature heating capacity

Active Publication Date: 2014-03-05
CHINA YANGZI GRP CHUZHOU YANGZI AIR CONDITIONERCO
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] With the improvement of the energy efficiency level of the national standard, domestic air conditioners often use large external units to improve the energy efficiency of the unit. Although the heating capacity of the unit can meet the requirements when heating, but because the area of ​​the indoor heat exchanger does not increase, it often causes The heating energy efficiency (COP) is not as good as the cooling energy efficiency (EER), which is the result of the mismatch between the internal and external unit systems

Method used

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  • Refrigeration/heating system with inside and outside heat exchanger volume ratio variable
  • Refrigeration/heating system with inside and outside heat exchanger volume ratio variable
  • Refrigeration/heating system with inside and outside heat exchanger volume ratio variable

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Embodiment Construction

[0017] Hereinafter, the present invention will be further described through specific embodiments in conjunction with the accompanying drawings.

[0018] Non-limiting examples are as follows: The four state cycles are introduced below

[0019] State 1

[0020] Such as figure 1 As shown, the high-temperature and high-pressure gas discharged from the compressor 1 flows through the four-way valve 2 and then enters the outdoor heat exchanger 3 for cooling, then flows through the one-way valve 5 and then enters the main capillary tube 7 to throttle it as a low-pressure liquid, and then flows into the indoor heat exchange The vaporizer 8 evaporates into low pressure gas and then enters the compressor 1 through the four-way valve 2; this is a common refrigeration cycle.

[0021] State 2

[0022] Such as figure 2 As shown, the high-temperature and high-pressure gas discharged from the compressor 1 flows through the four-way valve 2 and enters the indoor heat exchanger 8 for cooling, then flows...

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Abstract

The invention discloses a refrigeration / heating system with the inside and outside heat exchanger volume ratio variable. The refrigeration / heating system comprises a circulating system formed by a compressor, an outdoor heat exchanger, capillary tubes, an indoor heat exchanger, a four-way valve and a check valve. The refrigeration / heating system is characterized in that the outdoor heat exchanger is composed of a first outdoor heat exchanger and a second outdoor heat exchanger, the first outdoor heat exchanger is connected with the second outdoor heat exchanger through the check valve, and two ends of the check valve are in parallel connection with the throttling capillary tubes. According to the system, the second outdoor heat exchanger serves as part of the indoor heat exchanger under the heating, the super-cooling degree of the system is reduced by performing cooling again through the second outdoor heat exchanger, system pressure is reduced, the system heating capacity is improved, system input power is reduced, and accordingly the heating EER of the system is improved.

Description

[0001] The invention relates to an air conditioning refrigeration system, in particular to a refrigeration / heating system with a variable ratio of internal and external heat exchangers. Background technique [0002] With the improvement of the national standard energy efficiency level, domestic air conditioners often use large external units to improve the energy efficiency of the unit. Although the heat generation of the unit can meet the requirements when heating, the area of ​​the indoor heat exchanger has not increased, which often causes Heating energy efficiency (COP) is not as good as cooling energy efficiency (EER), which is the consequence of the mismatch of internal and external machine systems. Summary of the invention [0003] In order to solve the shortcomings of the above-mentioned systems, the present invention provides a refrigeration system with a variable volume ratio of internal and external heat exchangers, which improves the energy efficiency ratio of the heati...

Claims

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Application Information

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IPC IPC(8): F25B29/00F25B13/00F25B39/00F25B40/02
Inventor 倪学钟沈增友王爱民宋加升
Owner CHINA YANGZI GRP CHUZHOU YANGZI AIR CONDITIONERCO
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