Title:
VEHICLE AIR-CONDITIONING DEVICE
Document Type and Number:
Japanese Patent JP2021133725
Kind Code:
A
Abstract:
To early remove frost attached to an external heat exchanger with a simple structure.SOLUTION: A coolant discharged from a compressor 60 is circulated through a heat exchanger 47 for heating, variable opening expansion valves 64 to 66 which can be fully opened 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. A grille shutter 32 to change an introduction state of traveling winds is arranged in front of the external heat exchanger 30. When the external heat exchanger 30 is frosted, the grille shutter 32 is opened if an external temperature is equal to or higher than a predetermined temperature (for example 0°C to 3°C) or the grille shutter 32 is closed if the external temperature is less than the predetermined temperature (frost removal through effective utilization of traveling winds).SELECTED DRAWING: Figure 4
Inventors:
NAKAHARA YASUHIKO
TANAKA MASAAKI
SHIGEMORI DAIKI
NISHINO MASAKI
TANAKA MASAAKI
SHIGEMORI DAIKI
NISHINO MASAKI
Application Number:
JP2020029429A
Publication Date:
September 13, 2021
Filing Date:
February 25, 2020
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
B60H1/22; F25B1/00; F25B47/02
Domestic Patent References:
| JP2008221997A | 2008-09-25 | |||
| JPH05312442A | 1993-11-22 | |||
| JP2018184108A | 2018-11-22 | |||
| JP2020019397A | 2020-02-06 | |||
| JP2017137012A | 2017-08-10 | |||
| JP2013208938A | 2013-10-10 |
Attorney, Agent or Firm:
Minoru Murata
Yoshitaka Funase
Kiyotaka Totsuka
Yoshitaka Funase
Kiyotaka Totsuka