Title:
熱源装置
Document Type and Number:
Japanese Patent JP4596426
Kind Code:
B2
Abstract:
After a chiller unit is started, an opening command of 10 pulses is output to an electronic expansion valve, and after a predetermined period of time (at the time of starting with unload) elapses, an opening command of 100 to 150 pulses is output to open the electronic expansion valve up to a predetermined opening degree. Thereafter, a discharge side refrigerant super-heat TdSH is monitored and a closing command of 1 pulse/sec is output to the electronic expansion valve to drive the same in a closing direction in a short time until TdSH becomes 20 K. After TdSH has reached 20 K, a closing command of 1 pulse/3 sec is output to the electronic expansion valve, until TdSH becomes 25 K, to drive the electronic expansion valve 3 at a smaller speed in the closing direction than that speed in the closing direction until TdSH becomes 20 K. After TdSH reaches 25 K, it is judged that an operation has shifted to a stable operation, and the opening degree of the electronic expansion valve is controlled while a suction side refrigerant super-heat TsSH is monitored.
Inventors:
Masayuki Aiyama
Kikuchi Shoji
Ishibane Kuhei
Yoshikazu Ishiki
Mitsue Okamoto
Kikuchi Shoji
Ishibane Kuhei
Yoshikazu Ishiki
Mitsue Okamoto
Application Number:
JP2005273672A
Publication Date:
December 08, 2010
Filing Date:
September 21, 2005
Export Citation:
Assignee:
Hitachi Appliances, Inc.
International Classes:
F24F11/02
Domestic Patent References:
| JP5196309A | ||||
| JP2005055163A | ||||
| JP2003314907A | ||||
| JP2003106610A | ||||
| JP10246518A | ||||
| JP9159292A | ||||
| JP2002503329A |
Attorney, Agent or Firm:
Kasuga Toshiaki