Vehicle heat exchanger

Patent metadata

Field	Value
Publication number	US-9316448-B2
Application number	US-201113295421-A
Country	US
Kind code	B2
Filing date	Nov 14, 2011
Priority date	Nov 15, 2010
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

A vehicle heat exchanger includes a plurality of cup plates that are formed such that a first layered space into which a first heat carrier is introduced and a second layered space into which a second heat carrier is introduced are formed alternately between the plurality of cup plates when the plurality of plates are stacked. Peripheral end portions of the plurality of cup plates are fixed together in a liquid-tight manner. A distance in a stacking direction from a first cup plate that forms the first layered space to a second cup plate that forms the second layered space and a distance in the stacking direction from the second cup plate to the first cup plate are set to different distances, and end portions of outer wall portions of the cup plates are bent back so as to be apart from each other when the cup plates are stacked.

First claim

What is claimed is:

1. A vehicle heat exchanger comprising
a plurality of cup plates that are disposed such that a first layered space into which a first heat carrier is introduced and a second layered space into which a second heat carrier is introduced are disposed alternately between the plurality of cup plates when the plurality of cup plates are stacked, and peripheral end portions of the plurality of cup plates are fixed portions that are fixed together in a liquid-tight manner, the fixed portions being brazed sealed portions, wherein:
the heat exchanger is configured to perform heat exchange between the first heat carrier and the second heat carrier, wherein the first heat carrier is a transmission fluid and the second heat carrier is a coolant;
a distance in a stacking direction between a first cup plate, which is one of the plurality of cup plates, and a second cup plate, which is another one of the plurality of cup plates, and a distance in the stacking direction between the second cup plate and another first cup plate, which is another one of the plurality of cup plates, are set to different distances, the first cup plate and the second cup plate defining the first layered space, the second cup plate and the another first cup plate defining the second layered space; and
end portions of outer wall portions of the cup plates are bent back so that a distance between the cup plates increases from the portions fixed together when the cup plates are stacked toward outer peripheral edges of the outer wall portions of the cup plates to define first and second spaces alternating between end portions of the first and second cup plates, wherein a thickness dimension of the first space is thicker than a thickness dimension of the second space,
the first cup plate has a first hole portion,
the second cup plate has a second hole portion, and
the first hole portion and the second hole portion are configured as positioning holes alternately stacking the first cup plate and the second cup plate together,
wherein a thickness dimension of the first layered space is thicker than a thickness dimension of the second layered space, in the stacking direction, and a shape of the first cup plate and a shape of the second cup plate are different from each other, and
a fin is disposed only inside the first layered space so as to abut against each of the first cup plate and the second cup plate,
a dimple shaped depression is provided on a first layered space side of the second cup plate, the dimple shaped depression protruding as a convex protrusion from a second layered space side of the second cup plate, the convex protrusion protrudes from the second cup plate only into the second layered space and abuts against the first cup plate, and
wherein intervals in the stacking direction between the end portions of the outer wall portions of the stacked cup plates are predetermined irregular intervals.

2. A vehicle heat exchanger comprising:
a plurality of cup plates that are disposed such that a first layered space into which transmission fluid is introduced and a second layered space into which coolant is introduced are disposed alternately between the plurality of cup plates when the plurality of cup plates are stacked, and peripheral end portions of the plurality of cup plates are fixed portions that are fixed together in a liquid-tight manner, the fixed portions being brazed sealed portions;
wherein the heat exchanger is configured to perform heat exchange between the transmission fluid and the coolant, wherein the first heat carrier is a transmission fluid and the second heat carrier is a coolant;
a fin is disposed only inside the first layered space so as to abut against each of a first cup plate that defines the first layered space that introduces the transmission fluid and a second cup plate that defines the second layered space that introduces the coolant;
a dimple shaped depression is provided on a first layered space side of the second cup plate, the dimple shaped depression protruding as a convex protrusion from a second layered space side of the second cup plate, which protrudes from the second cup plate only into the second layered space and abuts against the first cup plate;
a height of the convex protrusion is smaller than a height of the fin, in a stacking direction,
the first cup plate has a first hole portion,
the second cup plate has a second hole portion, and
the first hole portion and the second hole portion are configured as positioning holes alternately stacking the first cup plate and the second cup plate together,
wherein a thickness dimension of the first layered space is thicker than a thickness dimension of the second layered space, in the stacking direction, and a shape of the first cup plate and a shape of the second cup plate are different from each other, and
wherein intervals in the stacking direction between end portions of outer wall portions of the stacked cup plates are determined irregular intervals;
wherein end portions of outer wall portions of the CUP plates are bent back so that a distance between the CUP plates increases from the portions fixed together when the CUP plates are stacked toward outer peripheral edges of the outer wall portions of the CUP plates to define first and second spaces alternating between end portions of the first and second CUP plates, wherein a thickness dimension of the first space is thicker than a thickness dimension of the second space.

3. A vehicle heat exchanger comprising:
a plurality of first cup plates and a plurality of second cup plates, wherein:
the plurality of first cup plates and the plurality of second cup plates are alternately stacked;
a distance in a stacking direction between one of the first cup plates and one of the second cup plates that is adjacent to the one of the first cup plates and a distance in the stacking direction between the one of the second cup plates and another one of the first cup plates that is adjacent to the one of the second cup plates and is disposed on a side opposite to the one of the first cup plates in the stacking direction with respect to the one of the second cup plates are set to different distances; and
end portions of outer wall portions of the cup plates are bent back so that a distance between the cup plates increases from portions fixed together when the cup plates are stacked toward outer peripheral edges of the outer wall portions of the cup plates to define first and second layered spaces alternating between the end portions of the first and second cup plates, wherein a thickness dimension of the first layered space is thicker than a thickness dimension of the second layered space,
the first cup plate has a first hole portion,
the second cup plate has a second hole portion, and
the first hole portion and the second hole portion are configured as positioning holes alternately stacking the first cup plate and the second cup plate together,
a fin is disposed only inside the first layered space so as to abut against each of the first cup plate and the second cup plate, and
a dimple shaped depression is provided on a first layered space side of the second cup plate, the dimple shaped depression protruding as a convex protrusion from a second layered space side of the second cup plate, the convex protrusion protrudes from the second cup plate only into the second layered space and abuts against the first cup plate,
wherein the plurality of first cup plates and the plurality of second cup plates are fixed together in a liquid tight manner at their peripheral edge portions, the peripheral edge portions being brazed sealed portions, and
wherein the heat exchanger is configured to perform heat exchange between a transmission fluid and a coolant in the first and second layered spaces, and
wherein intervals in the stacking direction b

Assignees

• Kanzaka Ryuji
• Tomohiro Tadasu
• Sasaki Kazumichi
• Fuji Shozo
• Toyota Motor Co Ltd

Inventors

• Kanzaka Ryuji
• Tomohiro Tadasu
• Sasaki Kazumichi
• Fuji Shozo

Classifications

• F28F3/025 Primary

  the means being corrugated, plate-like elements · CPC title

• F28D2021/008

  for vehicles · CPC title

• F01P2060/08

  Cabin heater · CPC title

• F01P2060/045

  for transmissions · CPC title

• F28D9/005

  the plates having openings therein for both heat-exchange media · CPC title