Vehicle air conditioning device
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United States of America Patent
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Sep 14, 2021
Grant Date -
Sep 12, 2019
app pub date -
May 23, 2019
filing date -
Nov 25, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A vehicle air conditioning device includes a compressor, a radiator, an outside heat exchanger, an evaporator, a first decompressor, a second decompressor, a switching portion, and a controller. The radiator exchanges heat between a refrigerant discharged from the compressor and air. The outside heat exchanger exchanges heat between outside air and the refrigerant flowing out of the radiator. The evaporator is exchanges heat between the refrigerant flowing out of the outside heat exchanger and the air flowing through the radiator. The switching portion switches between a series dehumidifying-heating mode and a parallel dehumidifying-heating mode. The controller is configured to control the switching portion to switch from the parallel dehumidifying-heating mode to the series dehumidifying-heating mode when the amount of the refrigerant oil flowing from the outside heat exchanger to the compressor is insufficient in the parallel dehumidifying-heating mode.
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