VEHICLE AIR CONDITIONER
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United States of America Patent
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Issued Date -
Oct 21, 2021
app pub date -
Sep 13, 2019
filing date -
Sep 27, 2018
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Abstract
An object of the present invention is to provide a vehicle air conditioning device that can solve the decrease of a circulation refrigerant quantity while effectively using the heat of a temperature control object in heating a cabin. The heating operation of a vehicle air conditioning device (1) includes an external air heat absorption heating mode for heating a cabin in a manner that a refrigerant discharged from a compressor (2) radiates heat in a radiator (4), the refrigerant is decompressed, and then the refrigerant absorbs heat in an outdoor heat exchanger (7), and a temperature control object heat absorption heating mode for heating the cabin in a manner that the refrigerant absorbs heat in a refrigerant-heat medium heat exchanger (64), and these modes are performed while being switched. The heating operation is started in the external air heat absorption heating mode.
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