US 12,467,695 B2
Heat pipe structure, heat sink, manufacturing method for heat pipe structure, and manufacturing method for heat sink
Chiyoshi Sasaki, Tokyo (JP); and Masakazu Isemura, Tokyo (JP)
Assigned to Furukawa Electric Co., Ltd., Tokyo (JP)
Filed by Furukawa Electric Co., Ltd., Tokyo (JP)
Filed on Jun. 24, 2021, as Appl. No. 17/357,736.
Application 17/357,736 is a continuation of application No. PCT/JP2019/049731, filed on Dec. 19, 2019.
Claims priority of application No. 2019-002193 (JP), filed on Jan. 9, 2019.
Prior Publication US 2021/0318075 A1, Oct. 14, 2021
Int. Cl. F28D 15/02 (2006.01)
CPC F28D 15/0275 (2013.01) [F28D 15/0233 (2013.01); F28F 2275/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A heat pipe structure comprising:
a base block including a rear surface part thermally connectable to a heat generating body; and
a heat pipe including a heat receiving tubular portion fixed to a front surface part of the base block and disposed along an in-plane direction of the base block, wherein
the base block has a longitudinal direction and a width direction and includes a recessed part in which the heat receiving tubular portion is accommodated,
the recessed part in which the heat receiving tubular portion is accommodated is below the front surface part of the base block,
a container part of the heat pipe is caulked and fixed in the recessed part and a first metal part containing first metal having a melting point equal to or higher than 130° C. and equal to or lower than 400° C. and/or a first metal alloy having a melting point equal to or higher than 130° C. and equal to or lower than 400° C. is formed between the recessed part and an outer surface of the container part,
the base block further includes a pair of wall parts projecting along an outer circumferential surface of the heat receiving tubular portion from both sides of the recessed part,
the first metal part extends from a first wall part of the pair of wall parts, passing the recessed part, to a second wall part of the pair of wall parts,
the heat receiving tubular portion has a first bent part and a second bent part in the longitudinal direction of the container part, and the first bent part and the second bent part are located in the recessed part of the base block,
the pair of wall parts are provided between the first bent part and the second bent part, and
the first metal part is formed in a gap between an inner curved surface of the recessed part of the base block and an outer curved surface of the first bent part of the heat receiving tubular portion of the heat pipe that is not crimped and faces the base block, wherein the inner curved surface of the recessed part of the base block corresponds to the outer curved surface of the first bent part.