Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TWO-STAGE PRESSURE BOOSTING TYPE REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/056623
Kind Code:
A1
Abstract:
A two-stage pressure boosting type refrigeration cycle device configured in such a manner that, when controlling a low-stage compression mechanism (12a) and a high-stage compression mechanism (11a) so that the low- and high-stage compression mechanisms (12a, 11a) operate intermittently in order to bring the temperature of air, which is blown into a refrigeration storage unit, close to a target temperature (Tset), the low-stage compression mechanism (12a) is stopped after the high-stage compression mechanism (11a) is stopped. Also, the low-stage compression mechanism (12a) is driven after the elapse of a reference standby period of time after the drive of the high-stage compression mechanism (11a). The configuration enables a high-stage-side pressure difference (PHd) to be reduced when driving the high-stage compression mechanism (11a) and a low-stage-side pressure difference (PLd) to be reduced when driving the low-stage compression mechanism (12a). As a result, both the compression mechanisms (11a, 12a) can be protected.

Inventors:
TAKIZAWA RYO (JP)
TANIGUCHI MASAMI (JP)
YAMAZAKI JUN (JP)
Application Number:
PCT/JP2011/004971
Publication Date:
May 03, 2012
Filing Date:
September 06, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DENSO CORP (JP)
TAKIZAWA RYO (JP)
TANIGUCHI MASAMI (JP)
YAMAZAKI JUN (JP)
International Classes:
F04C28/02; F25B1/10; F04C28/06; F25B1/00; F25B43/00
Foreign References:
JPH0544678A1993-02-23
JP2004028492A2004-01-29
JP2008297991A2008-12-11
JP2004108334A2004-04-08
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Download PDF:
Claims: