US 12,072,129 B2
Indoor unit of refrigeration apparatus
Yoshiyuki Tsuji, Osaka (JP); and Makoto Kojima, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jan. 11, 2022, as Appl. No. 17/573,043.
Application 17/573,043 is a continuation of application No. PCT/JP2020/026437, filed on Jul. 6, 2020.
Claims priority of application No. 2019-130646 (JP), filed on Jul. 12, 2019.
Prior Publication US 2022/0128281 A1, Apr. 28, 2022
Int. Cl. F25B 49/00 (2006.01); F24F 1/0047 (2019.01); F24F 8/10 (2021.01); F24F 11/30 (2018.01); F24F 13/22 (2006.01)
CPC F25B 49/005 (2013.01) [F24F 1/0047 (2019.02); F24F 11/30 (2018.01); F24F 8/10 (2021.01); F24F 13/222 (2013.01); F24F 2221/14 (2013.01); F25B 2500/222 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An indoor unit of a refrigeration apparatus to be installed in a ceiling, the indoor unit comprising:
a casing that has blow-out ports and a blow-in port disposed in a lower surface;
a plate-shaped member disposed below the blow-in port; and
a filter disposed above an opening in the plate-shaped member, wherein
the casing accommodates:
a heat exchanger in which a refrigerant, with a specific gravity larger than air, flows;
a control board;
a support member supporting the control board; and
a gas sensor disposed at or adjacent to the support member and between the casing and the plate-shaped member, wherein
the gas sensor detects the refrigerant flowing out of the blow-in port due to refrigerant leakage, and
the gas sensor is removable when the plate-shaped member is shifted,
the indoor unit further comprises a drain pan disposed below the heat exchanger,
the gas sensor is disposed underneath a bottom surface of the drain pan, and
the drain pan overlaps the gas sensor in a vertical direction when the indoor unit is installed in the ceiling.