Internal heat exchanger double-tube structure of air conditioning system having alternative refrigerant applied thereto
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United States of America Patent
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Aug 10, 2021
Grant Date -
Apr 4, 2019
app pub date -
Jul 22, 2016
filing date -
Mar 21, 2016
priority date (Note) -
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Abstract
The present invention relates to an internal heat exchanger double-tube structure of an air conditioning system having an alternative refrigerant applied thereto for heat exchange between a low-temperature low-pressure refrigerant discharged from an evaporator and a high-temperature high-pressure refrigerant discharged from an condenser, the double-tube structure including: an inner pipe having a channel through which the low-temperature low-pressure refrigerant discharged from the evaporator flows; and an outer pipe surrounding the inner pipe and having a channel through which high-temperature high-pressure refrigerant flows, wherein the inner pipe has a spiral groove forming a channel on an outer side thereof, and the spiral groove is a recessed groove for generating a vortex that increase a channel volume where high-temperature high-pressure liquid flows inward and reduces a vortex of flowing fluid.
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