US 11,698,213 B2
Heat exchanger, indoor unit for air-conditioner, and refrigeration device
Hiroyuki Nakano, Osaka (JP); Shouta Agou, Osaka (JP); and Yasuhiro Sasai, Osaka (JP)
Assigned to Daikin Industries, Ltd., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jun. 9, 2022, as Appl. No. 17/836,428.
Application 17/836,428 is a continuation of application No. PCT/JP2020/033819, filed on Sep. 7, 2020.
Claims priority of application No. 2019-223963 (JP), filed on Dec. 11, 2019.
Prior Publication US 2022/0299246 A1, Sep. 22, 2022
Int. Cl. F25B 47/00 (2006.01); F28F 19/06 (2006.01); F28F 21/08 (2006.01)
CPC F25B 47/003 (2013.01) [F28F 19/06 (2013.01); F28F 21/084 (2013.01); F25B 2700/2116 (2013.01); F25B 2700/2117 (2013.01); F28F 2275/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A heat exchanger comprising:
a pipe made of aluminum, the pipe being configured to carry a flow of refrigerant therein;
a thermistor configured to detect a temperature of the refrigerant; and
an attaching portion with which the thermistor is attached to the pipe, the pipe including a sacrificial layer provided on a part of a surface of the pipe, the sacrificial layer being lower in potential than the aluminum of the pipe, the part of the surface of the pipe where the sacrificial layer is provided being smaller than an entirety of the surface of the pipe,
the attaching portion being higher in potential than the sacrificial layer,
at least one part of the attaching portion being attached to the surface of the pipe where the sacrificial layer is not provided, the at least one part of the attaching overlapping the surface of the pipe where the sacrificial layer is not provided,
the attaching portion including a brazed portion that is higher in potential than the sacrificial laver, and
the thermistor being attached to the pipe with the brazed portion.