Oil returning mechanism of evaporator for air conditioner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 29, 1987
Grant Date -
N/A
app pub date -
Apr 3, 1987
filing date -
Apr 11, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air conditioner including a cooling medium compressor, a condenser, an expansion valve and an evaporator, these being connected one another by a cooling medium capillary tube to circulate a cooling medium, whereby an oil returning mechanism of an evaporator for the air conditioner is characterized in that there is provided an oil reservoir for reserving a lubricating oil after oil separation at a lower part of the evaporator, the oil reservoir and an outlet tube for guiding the cooling medium passed through the evaporator to the cooling medium compressor being connected by an oil returning tube, the oil returning tube being provided with a controlling valve, when a pressure differential between the oil returning tube and the outlet tube is a predetermined level or more, the controlling valve being closed to enhance a normal flow of the cooling medium from the evaporator to the cooling medium compressor, when the pressure differential is a predetermined level or less, the lubricating oil staying in the oil reservoir being fed to the cooling medium compressor via the oil returning tube and outlet tube.
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