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Cooling/heating system with variable volume ratio of internal and external heat exchangers

A heating system and outdoor heat exchanger technology, which is applied in heating and cooling combinations, refrigerators, refrigeration components, etc., can solve problems such as heating energy efficiency is not as good as cooling energy efficiency, mismatching internal and external machine systems, etc., to reduce defrosting. Difficulty, reduce condensation pressure, increase the effect of low temperature heating

Active Publication Date: 2016-04-13
CHINA YANGZI GRP CHUZHOU YANGZI AIR CONDITIONERCO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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, 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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  • Cooling/heating system with variable volume ratio of internal and external heat exchangers
  • Cooling/heating system with variable volume ratio of internal and external heat exchangers
  • Cooling/heating system with variable volume ratio of internal and external heat exchangers

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Embodiment Construction

[0017] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0018] Non-limiting examples are as follows: 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 forward through the one-way valve 5 and then enters the main capillary 7 to be throttled into a low-pressure liquid, and then flows into the indoor heat exchange The device 8 is evaporated into a low-pressure gas and then enters the compressor 1 through the four-way valve 2; this is a commonly used 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 then enters the indoor heat exchanger...

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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 and refrigeration system, in particular to a refrigeration / heating system with variable volume ratio of internal and external heat exchangers. Background technique [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, 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. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings of the above-mentioned systems, and provide a cooling / heating system with a variable volume ratio of internal and external heat exchangers, which improves t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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