Title:
VENTILATOR, AIR-CONDITIONING SYSTEM, VENTILATION METHOD, AND VENTILATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/112428
Kind Code:
A1
Abstract:
This ventilator comprises: a compressor; a first heat exchanger; a first air flow path for causing air drawn in from outdoors to pass through the first heat exchanger and then supplying the air to an indoor space; a second heat exchanger; a second air flow path for causing air drawn in from the indoor space to pass through the second heat exchanger and then discharging the air to the outdoors; a refrigerant circuit that is configured by the compressor, the first heat exchanger, and the second heat exchanger being connected by refrigerant piping and circulates refrigerant therethrough; and a control unit. The control unit detects whether or not a predetermined criterion indicating the possibility of frost formation in the second heat exchanger is satisfied while the second heat exchanger is functioning as an evaporator, and upon detecting that the predetermined criterion is satisfied, the control unit adjusts the temperature of the second heat exchanger by controlling the temperature of the refrigerant flowing therethrough such that the second heat exchanger does not frost.
Inventors:
TAKAHASHI TAKASHI (JP)
ODO TSUNAHIRO (JP)
TSURUZONO SHOTA (JP)
MATSUI NOBUKI (JP)
HANADA TAKUYA (JP)
FUJITA NAOTOSHI (JP)
YAMANOI YOSHIKI (JP)
IYOSHI YUTA (JP)
SAEKI KUMIKO (JP)
MIYAZAKI TAKERU (JP)
MAEDA TOSHIYUKI (JP)
OKAMOTO TETSUYA (JP)
ODO TSUNAHIRO (JP)
TSURUZONO SHOTA (JP)
MATSUI NOBUKI (JP)
HANADA TAKUYA (JP)
FUJITA NAOTOSHI (JP)
YAMANOI YOSHIKI (JP)
IYOSHI YUTA (JP)
SAEKI KUMIKO (JP)
MIYAZAKI TAKERU (JP)
MAEDA TOSHIYUKI (JP)
OKAMOTO TETSUYA (JP)
Application Number:
PCT/JP2022/036876
Publication Date:
June 22, 2023
Filing Date:
September 30, 2022
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F24F11/41; F24F7/007; F24F7/08; F24F11/79; F24F11/86; F24F110/10; F24F110/12; F24F140/12; F24F140/20
Domestic Patent References:
| WO2009028184A1 | 2009-03-05 | |||
| WO2020053929A1 | 2020-03-19 | |||
| WO2018025369A1 | 2018-02-08 |
Foreign References:
| JP2009250464A | 2009-10-29 | |||
| JP2017223425A | 2017-12-21 | |||
| JPS6136641A | 1986-02-21 | |||
| JP2012251716A | 2012-12-20 | |||
| JP2006029777A | 2006-02-02 | |||
| US20120180505A1 | 2012-07-19 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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