Title:
エンジン駆動式空気調和装置
Document Type and Number:
Japanese Patent JP6819407
Kind Code:
B2
Abstract:
To provide an engine driven-type air conditioner for suppressing the lowering of refrigerant suction pressure in a heating operation by a low-temperature heating operation mode.SOLUTION: A control device 60 performs: second flow rate regulation valve full-closing processing for controlling a second flow rate regulation valve 18B so that the second flow rate regulation valve 18B is fully closed when setting an operation state to a low-temperature heating mode; first flow rate regulation valve opening control processing S202 for controlling an opening of a first flow rate regulation valve 18A so that a temperature Tw of cooling water circulating in a cooling water circuit 50 is maintained at a temperature not lower than a lower limit cooling water temperature Tw0 after the execution of the second flow rate regulation valve full-closing processing; and bypass valve control processing for controlling a hot-gas bypass opening/closing valve 18E interposed in hot-gas bypass piping 38 so that refrigerant suction pressure PL is maintained at pressure not higher than lower limit pressure PL0 after the execution of the first flow rate regulation valve opening control processing.SELECTED DRAWING: Figure 4
Inventors:
Junichi Yokoyama
Application Number:
JP2017065117A
Publication Date:
January 27, 2021
Filing Date:
March 29, 2017
Export Citation:
Assignee:
Aisin Seiki Co., Ltd.
International Classes:
F25B27/00; F24F1/44; F24F11/70; F25B1/00; F25B27/02
Domestic Patent References:
| JP2010276275A | ||||
| JP200516805A | ||||
| JP201753552A | ||||
| JP2006275314A |
Foreign References:
| US20160201952 |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office
Kenai Kanai
Kenai Kanai