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Patent Searching and Data


Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2019/087621
Kind Code:
A1
Abstract:
The air conditioner according to the present invention comprises: a compressor having a variable operating frequency; an outdoor heat exchanger and an indoor heat exchanger; and a switching mechanism for reversibly switching a stream of refrigerant in a refrigerant circuit. The air conditioner is configured so as to perform a refrigerant discharge startup operation wherein, when the compressor starts up as part of starting cooling operation or heating operation, the compressor is operated at a first target frequency with the switching mechanism switched to a reverse cycle over a specific length of time, after which the compressor is operated with the operating frequency of the compressor changed from the first target frequency to a second target frequency that is lower than the first target frequency. During refrigerant discharge startup operation, a first transition speed at which the operating frequency is lowered from the first target frequency to the second target frequency is faster than a second transition speed at which the operating frequency of the compressor is lowered during heating operation.

Inventors:
ITOU HIROSHI (JP)
NAKATA TAKAHIRO (JP)
OKA SEIJI (JP)
ASHIZAWA TOMOHARU (JP)
Application Number:
PCT/JP2018/035621
Publication Date:
May 09, 2019
Filing Date:
September 26, 2018
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B13/00; F24F11/86
Domestic Patent References:
WO2016117113A12016-07-28
Foreign References:
JPS63129257A1988-06-01
JP2017083144A2017-05-18
JP2017083143A2017-05-18
JP2014129957A2014-07-10
JP2010121789A2010-06-03
JPH05264134A1993-10-12
JP2014089004A2014-05-15
JPS63129257A1988-06-01
Other References:
See also references of EP 3705810A4
Attorney, Agent or Firm:
FUKUI, Hiroshi (JP)
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