Title:
FEEDBACK OIL QUALITY DETERMINATION DEVICE AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
Japanese Patent JP2007040606
Kind Code:
A
Abstract:
To appropriately determine shortage of feedback oil quantity in a refrigeration cycle device.
A temporary control current Int for changing a compressor discharge capacity is calculated (S96). The calculated temporary control current Int (low-pressure side information value) is compared with a control current threshold Ind predetermined based on a compressor discharge refrigerant pressure Pd (high-pressure side information value), whereby shortage of feedback oil quantity is appropriately determined (S97). When shortage of feedback oil quantity is determined, a control current In for changing the compressor discharge capacity is changed to the control current threshold Ind to solve the shortage of feedback oil quantity (S99).
Inventors:
ENOMOTO KATSUTOSHI
Application Number:
JP2005225295A
Publication Date:
February 15, 2007
Filing Date:
August 03, 2005
Export Citation:
Assignee:
DENSO CORP
International Classes:
F25B1/00; B60H1/32
Domestic Patent References:
| JP2006118826A | 2006-05-11 | |||
| JPH09268974A | 1997-10-14 | |||
| JPH0599136A | 1993-04-20 |
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Fumihiro Mizuno
Takahiro Miura
Fumihiro Mizuno
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