Title:
AIR CONDITIONING SYSTEM AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2021/214931
Kind Code:
A1
Abstract:
Provided are a system and a method which can prevent or reduce an intermittent operation and maintain comfort. This air conditioning system includes an indoor unit and an outdoor unit. The indoor unit includes: a heat exchanger; an indoor temperature detection means for detecting an indoor temperature; and a valve for adjusting the flow rate of a refrigerant flowing in a refrigeration cycle. The outdoor unit includes: a heat exchanger; a compressor; a frequency detection means for detecting the operation frequency of the compressor; and a valve for adjusting the flow rate of the refrigerant flowing in the refrigeration cycle. The air conditioning system further includes a control means for controlling the opening degree of the valve of the indoor unit depending on the indoor temperature detected by the indoor temperature detection means, the amount of change in the indoor temperature over a predetermined period of time, and the operation frequency detected by the frequency detection means.
Inventors:
NAKAYASU SATORU (JP)
URATA KAZUMOTO (JP)
IIZUKA TAIKI (JP)
TOKUDI MIKIHITO (JP)
URATA KAZUMOTO (JP)
IIZUKA TAIKI (JP)
TOKUDI MIKIHITO (JP)
Application Number:
PCT/JP2020/017449
Publication Date:
October 28, 2021
Filing Date:
April 23, 2020
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
F25B1/00
Domestic Patent References:
| WO2018211682A1 | 2018-11-22 | |||
| WO2017017767A1 | 2017-02-02 |
Foreign References:
| JP2009058200A | 2009-03-19 | |||
| JP2010249452A | 2010-11-04 | |||
| JPH10141740A | 1998-05-29 |
Attorney, Agent or Firm:
MAYAMA INTERNATIONAL PATENT OFFICE (JP)
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