Heat exchanger

A heat exchanger comprising:

• a plurality of tubes;
• core plates to which the plurality of tubes are bonded;
• and
• tank members connected to the core plates, wherein
• an edge of the core plate and an edge of the tank member are connected to each other by a clamping section,
• the clamping section has a plurality of claws provided on the edge of the core plate, an edge portion provided on an opening end of the tank member, and a waved wall provided in the tank member along a length direction in a wave shape,
• the waved wall has a waved outer surface that is provided on an outer surface above the edge portion and that includes a plurality of outer ridge portions and a plurality of outer valley portions which are disposed alternately, and a waved inner surface that is provided on an inner surface of the tank member and that includes a plurality of inner ridge portions and a plurality of inner valley portions which are disposed alternately,
• the plurality of outer valley portions are capable of receiving the claw and have a step difference portion in contact with the claw, which is formed on the edge portion,
• the inner ridge portion is positioned inside the outer valley portion in a width direction,
• the inner ridge portion is positioned between the adjacent tubes and/or between the tubes in an extension of the tubes in a height direction, and
• an inner width of the tank member regulated by the inner ridge portion is narrower than a width of the tube, and wherein
• a pitch of the plurality of claws and a pitch of the waved wall are as wide as a natural number times a pitch of the plurality of tubes.

A heat exchanger comprising:

• a plurality of tubes;
• core plates to which the plurality of tubes are bonded;
• and
• tank members connected to the core plates, wherein
• an edge of the core plate and an edge of the tank member are connected to each other by a clamping section,
• the clamping section has a plurality of claws provided on the edge of the core plate, an edge portion provided on an opening end of the tank member, and a waved wall provided in the tank member along a length direction in a wave shape,
• the waved wall has a waved outer surface that is provided on an outer surface above the edge portion and that includes a plurality of outer ridge portions and a plurality of outer valley portions which are disposed alternately, and a waved inner surface that is provided on an inner surface of the tank member and that includes a plurality of inner ridge portions and a plurality of inner valley portions which are disposed alternately,
• the plurality of outer valley portions are capable of receiving the claw and have a step difference portion in contact with the claw, which is formed on the edge portion,
• the inner ridge portion is positioned inside the outer valley portion in a width direction,
• the inner ridge portion is positioned between the adjacent tubes and/or between the tubes in an extension of the tubes in a height direction, and
• an inner width of the tank member regulated by the inner ridge portion is narrower than a width of the tube, and wherein
• the claw and the waved wall are respectively provided on only a side of the core plate and the tank member extending along the length direction, and
• on a side of the core plate and the tank member extending along the width direction, the clamping section including the claw and the step difference portion which are independent from the pitch of the tubes is provided.