Title:
CONTROL DEVICE AND CONTROL METHOD OF EXTRACTION DEVICE
Document Type and Number:
Japanese Patent JP2016065673
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To attain stable operation in a case of employing a low GWP refrigerant with low pressure.SOLUTION: A control device 16 includes an estimation unit 31, a determination unit 32 and a start-up control unit 33. The estimation unit 31 estimates an air intrusion amount, with an air intrusion influence degree indicating easiness of intrusion of air determined from a structural surface of a refrigeration machine, and a variable obtained from a function using pressure as a parameter. The determination unit 32 determines whether an integrated value of the air intrusion amount is equal to or more than a preset allowance. The start-up control unit 33 starts up an extraction device when the integrated value of the air intrusion amount is equal to or more than the allowance.SELECTED DRAWING: Figure 2
Inventors:
TSUGANO YOSHIE
UEDA KENJI
MATSUKURA NORIYUKI
UEDA KENJI
MATSUKURA NORIYUKI
Application Number:
JP2014195090A
Publication Date:
April 28, 2016
Filing Date:
September 25, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F25B43/04
Domestic Patent References:
| JPH06241624A | 1994-09-02 | |||
| JPH0989423A | 1997-04-04 |
Foreign References:
| WO2009157325A1 | 2009-12-30 |
Attorney, Agent or Firm:
Noriharu Fujita
Kunio Ueda
Kunio Ueda