Title:
VEHICLE AIR-CONDITIONING DEVICE
Document Type and Number:
Japanese Patent JP2021133724
Kind Code:
A
Abstract:
To sufficiently cool a battery without complicating a system even when a coolant is used in common for air-conditioning a vehicle interior and for cooling the battery.SOLUTION: A coolant discharged from a compressor 60 is circulated through a heat exchanger 47 for heating and an external heat exchanger 30. The coolant having passed through the external heat exchanger 30 is then allowed to be circulated through an expansion valve 73 for cooling, a heat exchanger 45, an expansion valve 83 for cooling a battery 21 and a heat exchanger 81. Whether to introduce external air into an air passage 41 or to internally circulate air can be switched through a switchover damper 42. Volume of air-conditioning air to be introduced into the air passage 41 is changed with a blower 43. When pressure of the coolant (that has passed through the external heat exchanger 30 in particular) is equal to or less than predetermined pressure, at least either control for internal air circulation or control for reducing the volume of air-conditioning air is executed so as to curb pressure reduction of the coolant with a heat exchange amount of the heat exchanger 47 for heating reduced.SELECTED DRAWING: Figure 2
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Inventors:
NAKAHARA YASUHIKO
TANAKA MASAAKI
SHIGEMORI DAIKI
NISHINO MASAKI
TANAKA MASAAKI
SHIGEMORI DAIKI
NISHINO MASAKI
Application Number:
JP2020029428A
Publication Date:
September 13, 2021
Filing Date:
February 25, 2020
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
B60H1/22; F25B1/00; F25B6/04
Domestic Patent References:
| JP2018184108A | 2018-11-22 | |||
| JPH08268035A | 1996-10-15 |
Foreign References:
| WO2014073687A1 | 2014-05-15 |
Attorney, Agent or Firm:
Minoru Murata
Yoshitaka Funase
Kiyotaka Totsuka
Yoshitaka Funase
Kiyotaka Totsuka