Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2015/083529
Kind Code:
A1
Abstract:
In this air conditioner, at least one indoor unit (3A, 3B) is connected to an outdoor unit (2) via crossover gas piping (4) and crossover liquid piping (5), and a gas-side shutoff valve (36) and a liquid-side shutoff valve (35) are provided in the crossover gas piping (4) and the crossover liquid piping (5) in the vicinity of a gas-side operation valve (19) and a liquid-side operation valve (20) provided in a coolant circuit (22) on the outdoor unit (2) side. An outdoor control device (27) is equipped with: an emergency shutdown control function for closing the liquid-side shutoff valve (35) on the basis of an emergency shutoff signal, causing operation to continue as a cooling cycle and, when a low-pressure pressure reaches a set pressure, closing the gas-side shutoff valve (36) and stopping the operation of the air conditioner (1); and an output terminal (37) for outputting a shutoff signal to the gas-side shutoff valve (36) and the liquid-side shutoff valve (35).
More Like This:
Inventors:
KATO TAKAHIRO (JP)
MITOMA KEISUKE (JP)
HAMACHIYO TAKASHI (JP)
MITOMA KEISUKE (JP)
HAMACHIYO TAKASHI (JP)
Application Number:
PCT/JP2014/080366
Publication Date:
June 11, 2015
Filing Date:
November 17, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F25B49/02; F24F11/02; F25B1/00; F25B5/02; F25B6/02; F25B13/00
Foreign References:
| JPS5716767A | 1982-01-28 | |||
| JPS6375445A | 1988-04-05 | |||
| JPH0460349A | 1992-02-26 | |||
| JP2000028238A | 2000-01-28 | |||
| JP2000274847A | 2000-10-06 | |||
| JP3530983B2 | 2004-05-24 |
Other References:
See also references of EP 3040655A4
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
Download PDF: