Title:
VEHICULAR AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/115509
Kind Code:
A1
Abstract:
A vehicular air conditioning device, wherein, when it has been determined that an outdoor heat exchanger (13) has reached a predetermined frosted state during a temperature-maintaining operation mode in which refrigerant is circulated to a heat pump cycle (10) so that the temperature in the vehicle interior is maintained at a target heating temperature, a controller (2) performs a room temperature-maintaining frost suppression operation (a first frost suppression operation). At this time, the air-blowing rate of an air-blower (32) is maintained, and the rotational speed of a compressor (11) is increased so that the temperature of discharging into the vehicle interior is not reduced. The opening degree of a heating expansion valve (21) is also increased so that the temperature of the outdoor heat exchanger (13) does not decrease. User discomfort can thereby be prevented and frost on the outdoor heat exchanger can be suppressed.
More Like This:
Inventors:
SAKAMOTO KOTA (JP)
KATOH YOSHIKI (JP)
KUWAHARA MIKIHARU (JP)
TANIHATA TAKUYA (JP)
KATOH YOSHIKI (JP)
KUWAHARA MIKIHARU (JP)
TANIHATA TAKUYA (JP)
Application Number:
PCT/JP2014/000171
Publication Date:
July 31, 2014
Filing Date:
January 16, 2014
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
B60H1/22; F25B47/02
Foreign References:
| JPH02192536A | 1990-07-30 | |||
| JPH0719675A | 1995-01-20 | |||
| JP2012017092A | 2012-01-26 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
Download PDF: