Technical Field
[0001] The present invention relates to a heat exchange device and a method for
manufacturing the heat exchange device.
Background Art
[0002] A central processing unit (CPU) mounted on a computer or a secondary battery
mounted on an electric vehicle generates heat during operation. As means for cooling such a
heating element, various cooling devices that use a cooling medium have been proposed.
[0003] Patent Document 1 discloses a water-cooled plate-type cooling unit. The cooling unit
disclosed in Patent Document 1 includes a pair of plates, a rib, and a water supply/discharge
fitting. The rib defines a flow path in a cavity region between the pair of plates. An external
hose is coupled to the water supply/discharge fitting. A heat transfer medium flows into or is
discharged into the flow path via the water supply/discharge fitting. The pair of plates, the rib,
and the water supply/discharge fitting are made of metal. The water supply/discharge fittings
and the rib are welded to the pair of plates.
[0004] Patent Document 1: Japanese Patent Application Laid-Open (JP-A) No. 2015-210032
SUMMARY OF INVENTION
Technical Problem
[0005] In response to diversification of applications of cooling devices in recent years, it is
desired to cope with weight reduction, cost reduction, and the like of cooling devices as well as
complication of a shape. In particular, in a cooling device using a cooling medium, a technique
for joining a joint member or a first member for water supply and discharge to a heat exchange
main body portion such as a pair of plates by a method other than welding or brazing while
ensuring airtightness is required.
[0006] In view of the above circumstances, an object of the present disclosure is to provide a
heat exchange device having excellent airtightness even when the joint member or the first
member is not welded or brazed, and a method for manufacturing the heat exchange device.
Another object of the disclosure is to provide a heat exchange device capable of
configuring a degree of freedom in designing an internal flow path through which a heat
exchange medium flows.
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Solution to Problem
[0007] Means for solving the above problems include the following embodiments.
<1> A heat exchange device according to a first aspect of the disclosure includes: a
heat exchange main body portion that has an internal flow path through which a heat exchange
medium flows and a metal wall portion including a through-hole that communicates with the
internal flow path; a joint member that has a protruding portion including an opening through
which the heat exchange medium is supplied or discharged and protruding toward an outside
of the heat exchange main body portion via the through-hole, and a hollow portion for causing
the opening and the internal flow path to communicate with each other; and a resin sealing
portion that seals a gap between an inner peripheral surface of the through-hole and an outer
peripheral surface of the protruding portion.
[0008] The heat exchange device according to the first aspect can prevent leakage of the heat
exchange medium or intrusion of foreign matter from an outside through the gap between the
through-hole and the protruding portion. That is, the heat exchange device of the first aspect
has excellent airtightness even when the joint member is not joined to the heat exchange main
body portion by brazing or welding.
[0009] <2> A heat exchange device according to a second aspect of the disclosure includes: a
heat exchange main body portion that has a metal wall portion including a through-hole; a first
component that covers the through-hole; and a second component that is connected to the first
component, in which the heat exchange main body portion further has an internal flow path
through which a heat exchange medium flows, the first component has a first connecting portion
including a first opening, and to which the second component is connected, a first hollow
portion for causing the first opening and the internal flow path to communicate with each other,
and a resin fixing portion that is fixed to the metal wall portion, and the second component has
a second connecting portion that includes a second opening through which the heat exchange
medium is supplied or discharged, and to which a supply unit that supplies the heat exchange
medium to the internal flow path or a discharge unit that discharges the heat exchange medium
from the internal flow path is connected, and a second hollow portion that causes the second
opening and the first opening to communicate with each other.
[0010] In the disclosure, “first component that covers the through-hole” includes a first aspect
and a second aspect. The first aspect indicates an aspect in which the first connecting portion
of the first component protrudes toward the outside of the heat exchange main body portion via
the through-hole, and the resin fixing portion seals the gap between the inner peripheral surface
of the through-hole and the outer peripheral surface of the first connecting portion. The second
aspect indicates an aspect in which the first component covers the through-hole so that the
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through-hole is not exposed, and there is no gap between the resin fixing portion and the metal
wall portion.
[0011] The heat exchange device according to the second aspect can prevent leakage of the
heat exchange medium or intrusion of foreign matter from the outside through the gap between
the first component and the metal wall portion. That is, the heat exchange device of the second
aspect has excellent airtightness even when the first component for supply and discharge is not
joined to the heat exchange main body portion by brazing or welding.
[0012] <3> A heat exchange device according to a third aspect of the disclosure is the heat
exchange device according to <2>, further including a packing that seals a gap between the first
component and the second component.
[0013] The heat exchange device according to the third aspect can more reliably prevent
leakage of the heat exchange medium or intrusion of foreign matter from the outside through
the gap between the first component and the second component than a case where the packing
is not provided.
[0014] <4> A heat exchange device according to a fourth aspect of the disclosure is the heat
exchange device according to <2> or <3>, in which the first component includes a joint member,
the joint member includes a protruding portion that is the first connecting portion and a hollow
portion that is the first hollow portion, the joint member does not include a resin sealing portion
that is the resin fixing portion, the protruding portion protrudes toward an outside of the heat
exchange main body portion via the through-hole, and the resin sealing portion seals a gap
between an inner peripheral surface of the through-hole and an outer peripheral surface of the
protruding portion.
[0015] In the disclosure, “joint member does not include a resin fixing portion” indicates that
the joint member and the resin fixing portion of the first component are separately formed, in
other words, the joint member and the resin fixing portion are not integrally molded. In the
disclosure, “protruding portion that is the first connecting portion” indicates that the first
connecting portion is paraphrased as a protruding portion, “hollow portion that is the first
hollow portion” indicates that the first hollow portion is paraphrased as a hollow portion, and
“resin sealing portion that is the resin fixing portion” indicates that the resin fixing portion is
paraphrased as a resin sealing portion.
[0016] The heat exchange device of the fourth aspect can prevent leakage of the heat exchange
medium or intrusion of foreign matter from the outside through the gap between the throughhole and the first connecting portion. That is, the heat exchange device of the fourth aspect has
excellent airtightness even when the joint member is not joined to the heat exchange main body
portion by brazing or welding.
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[0017] <5> A heat exchange device according to a fifth aspect of the disclosure is the heat
exchange device according to <1> or <4>, in which the heat exchange main body portion has a
facing wall portion facing the metal wall portion, the joint member has a projecting portion that
projects from the outer peripheral surface of the protruding portion over an entire periphery of
the outer peripheral surface of the protruding portion, and the projecting portion is in contact
with an inner surface of the metal wall portion and an inner surface of the facing wall portion.
[0018] In the fifth aspect, the projecting portion functions as a support of the metal wall
portion. Therefore, even when a pressing force is applied to the metal wall portion in a thickness
direction of the metal wall portion, the metal wall portion is hardly deformed. For example, in
a case where the resin sealing portion is formed by injection molding, the projecting portion
serves as a support of the metal wall portion against an injection pressure, so that the metal wall
portion is hardly deformed. As a result, the heat exchange device according to the fifth aspect
can reduce a pressure loss of the heat exchange medium flowing through the internal flow path.
That is, the heat exchange device according to the fifth aspect can efficiently allow the heat
exchange medium to flow through the internal flow path.
[0019] <6> A heat exchange device according to a sixth aspect of the disclosure is the heat
exchange device according to any one of <1>, <4>, and <5>, in which a surface of the metal
wall portion in contact with the resin sealing portion is subjected to a roughening treatment.
[0020] In the sixth aspect, the surface of the metal wall portion in contact with the resin sealing
portion includes fine unevenness. Accordingly, the resin sealing portion is firmly fixed to the
metal wall portion by an anchor effect as compared with a case where the roughening treatment
is not performed. As a result, the heat exchange device according to the sixth aspect can
maintain airtightness for a long period of time.
[0021] <7> A heat exchange device according to a seventh aspect of the disclosure is the heat
exchange device according to any one of <1> and <4> to <6>, in which the resin sealing portion
has a covering portion that covers a periphery of the through-hole on an outer surface of the
metal wall portion.
[0022] In the seventh aspect, a contact area between the resin sealing portion and the metal
wall portion is larger than that in a case where the resin sealing portion does not have the
covering portion. Therefore, the resin sealing portion is firmly fixed to the metal wall portion
as compared with a case where the resin sealing portion does not have the covering portion. As
a result, the heat exchange device according to the seventh aspect can maintain airtightness for
a long period of time.
[0023] <8> A heat exchange device according to an eighth aspect of the disclosure is the heat
exchange device according to <7>, in which the joint member has a projecting portion that
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projects from the outer peripheral surface of the protruding portion over an entire periphery of
the outer peripheral surface of the protruding portion, and the covering portion has a first
covering portion that covers a first region facing the projecting portion on the outer surface of
the metal wall portion.
[0024] In the eighth aspect, even when the resin sealing portion is injection-molded and a
thickness of the metal wall portion is relatively thin, occurrence of deformation of the metal
wall portion due to the injection pressure is suppressed. Further, a contact area between the
resin sealing portion and the metal wall portion is larger than a case where the resin sealing
portion does not have the first covering portion. Therefore, the resin sealing portion is more
firmly fixed to the metal wall portion. As a result, the heat exchange device according to the
eighth aspect can maintain airtightness for a longer period of time.
[0025] <9> A heat exchange device according to a ninth aspect of the disclosure is the heat
exchange device according to <8>, in which the covering portion has a second covering portion
that covers a second region outside the first region of the outer surface of the metal wall portion
with respect to the through-hole.
[0026] In the ninth aspect, the contact area between the resin sealing portion and the metal
wall portion is larger than that in a case where the covering portion has only the first covering
portion. Therefore, the resin sealing portion is more firmly fixed to the metal wall portion. As
a result, the heat exchange device according to the ninth aspect can maintain airtightness for a
longer period of time.
[0027] <10> A heat exchange device according to a tenth aspect of the disclosure is the heat
exchange device according to any one of <7> to <9>, in which the outer peripheral surface of
the protruding portion has a distal end side outer peripheral surface, a proximal end side outer
peripheral surface having a diameter larger than that of the distal end side outer peripheral
surface, and a step surface that couples the distal end side outer peripheral surface and the
proximal end side outer peripheral surface, and the covering portion covers only the proximal
end side outer peripheral surface of the outer peripheral surface of the protruding portion.
[0028] In the tenth aspect, when the resin sealing portion is formed by insert molding, which
is a type of injection molding, the step surface can suppress formation of burrs. As a result, the
heat exchange device of the tenth aspect is excellent in an appearance.
[0029] <11> A heat exchange device according to an eleventh aspect of the disclosure is the
heat exchange device according to any one of <5> to <10>, in which the heat exchange main
body portion has a facing wall portion facing the metal wall portion, the joint member has a
projecting portion that projects from the outer peripheral surface of the protruding portion over
an entire periphery of the outer peripheral surface of the protruding portion, the projecting
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portion has a notch portion that forms a flow path between the notch and an inner surface of the
facing wall portion, and the flow path causes the hollow portion and the internal flow path to
communicate with each other.
[0030] In the eleventh aspect, the joint member does not have the notch portion, and can form
a passage for the heat exchange medium having a larger volume than a case where the hollow
portion and the internal flow path directly communicate with each other. Therefore, a pressure
loss of the heat exchange medium flowing through the internal flow path is reduced. As a result,
the heat exchange device of the eleventh aspect can efficiently allow the heat exchange medium
to flow through the internal flow path.
[0031] <12> A heat exchange device according to a twelfth aspect of the disclosure is the heat
exchange device according to <11>, in which a cross-sectional shape of the notch portion is an
arch shape.
[0032] In the twelfth aspect, even when a pressing force is applied to the metal wall portion
in a thickness direction of the metal wall portion, the flow path is less likely to be deformed as
compared with a case where the flow path does not have an arch shape. Therefore, the heat
exchange device of the twelfth aspect can reduce the pressure loss of the heat exchange medium
flowing through the internal flow path. As a result, the heat exchange device of the twelfth
aspect can efficiently allow the heat exchange medium to flow through the internal flow path.
[0033] <13> A heat exchange device according to a thirteenth aspect of the disclosure is the
heat exchange device according to any one of <1> and <4> to <12>, in which the outer
peripheral surface of the protruding portion is made of a metal, and a surface of the outer
peripheral surface of the protruding portion in contact with the resin sealing portion is subjected
to a roughening treatment.
[0034] In the thirteenth aspect, the surface of the protruding portion in contact with the resin
sealing portion includes fine unevenness. Therefore, the resin sealing portion is firmly fixed to
the protruding portion by the anchor effect as compared with a case where the roughening
treatment is not performed. As a result, the heat exchange device according to the thirteenth
aspect can maintain airtightness for a longer period of time.
[0035] <14> A heat exchange device according to a fourteenth aspect of the disclosure is the
heat exchange device according to any one of <1> and <4> to <12>, in which the outer
peripheral surface of the protruding portion is made of a resin, and the outer peripheral surface
of the protruding portion and the resin sealing portion are fused.
[0036] In the disclosure, “fused” means a state in which the outer peripheral surface of the
protruding portion and the resin sealing portion are fixed to each other by heat without an
adhesive, a screw, or the like.
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[0037] In the fourteenth aspect, the resin sealing portion and the joint member are firmly fixed
to each other. As a result, the heat exchange device of the fourteenth aspect can maintain
airtightness for a longer period of time.
[0038] <15> A heat exchange device according to a fifteenth aspect of the disclosure is the
heat exchange device according to any one of <1> and <4> to <14>, in which the resin sealing
portion is formed by injection molding.
[0039] In the fifteenth aspect, the resin sealing portion enters into a gap of the fine uneven
portions on the surface of the metal wall portion in contact with the resin sealing portion.
Therefore, the resin sealing portion is firmly fixed to the metal wall portion. As a result, the
heat exchange device of the fifteenth aspect can maintain airtightness for a longer period of
time.
[0040] <16> A method for manufacturing a heat exchange device according to a sixteenth
aspect of the disclosure further includes: a preparation step of preparing a joint member having
a protruding portion; an insert step of disposing the joint member inside a heat exchange main
body portion having a metal wall portion including a through-hole and protruding the
protruding portion toward an outside of the heat exchange main body portion via the throughhole; and a sealing step of forming the resin sealing portion in a gap between an inner peripheral
surface of the through-hole and an outer peripheral surface of the protruding portion and sealing
the gap.
[0041] In the disclosure, “disposing the joint member inside a heat exchange main body
portion” indicates that a portion of the joint member is accommodated in the heat exchange
main body portion.
[0042] In the sixteenth aspect, a heat exchange device having excellent airtightness can be
obtained even when the joint member is not joined to the heat exchange main body portion by
brazing or welding. The joint member is prepared in advance before the sealing step is executed.
Therefore, the joint member can be molded into a more complicated shape than a case of resin
molded in the sealing step. The complicated shape includes, for example, an undercut.
Examples of the undercut include a packing groove and a connecting groove. Therefore, for
example, a complicated connector such as a rotary connector can be connected to the protruding
portion of the joint member in order to be connected to an external supply unit or an external
discharge unit. The external supply unit supplies the heat exchange medium to the heat
exchange device. The heat exchange medium is discharged from the heat exchange device to
the external discharge unit. As a result, a heat exchange device that can be used in a wide
variety of fields is obtained.
[0043] <17> A method for manufacturing a heat exchange device according to a seventeenth
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aspect of the disclosure is the method for manufacturing a heat exchange device according to
<16>, in which the heat exchange main body portion has a pair of metal members facing each
other, and a resin joint portion that joins the pair of metal members, one of the pair of metal
members includes the metal wall portion, and in the sealing step, the resin sealing portion is
formed and the resin joint portion is formed.
[0044] In the method for manufacturing a heat exchange device according to the seventeenth
aspect, the resin sealing portion and the resin joint portion can be formed more efficiently than
a case where the resin sealing portion and the resin joint portion are formed in separate steps.
[0045] <18> A method for manufacturing a heat exchange device according to an eighteenth
aspect of the disclosure is the method for manufacturing a heat exchange device according to
<16> or <17>, further including a roughening step of performing a roughening treatment on a
surface of the metal wall portion with which the resin sealing portion is brought into contact, in
which the roughening step is executed before the sealing step.
[0046] In the eighteenth aspect, before the sealing step is executed, a fine uneven structure is
formed on a surface of the metal wall portion with which the resin sealing portion is brought
into contact. Therefore, in the sealing step, for example, melt of the resin constituting the resin
sealing portion easily enters the gap of the fine uneven structure. That is, by the anchor effect,
the resin sealing portion that is firmly fixed to the metal wall portion is formed as compared
with a case where the roughening treatment is not performed. As a result, a heat exchange
device capable of maintaining airtightness for a long period of time is obtained.
[0047] <19> A heat exchange device according to a nineteenth aspect of the disclosure
includes: a first metal plate having a through-hole; a second metal plate facing the first metal
plate; a joint member that is sandwiched between the first metal plate and the second metal
plate and to which a supply unit that supplies a heat exchange medium or a recovery unit that
recovers the heat exchange medium is connected; and a resin fixing portion that is in contact
with a peripheral edge portion of the first metal plate and the second metal plate and fixes the
second metal plate to the first metal plate, in which the joint member includes: a recessed
portion for forming an internal flow path through which the heat exchange medium flows with
at least one of the first metal plate and the second metal plate, an opening exposed from the
through-hole and for supplying or recovering the heat exchange medium, and a hollow portion
for causing the opening and the internal flow path to communicate with each other.
[0048] In the nineteenth aspect, the internal flow path is formed even when a surrounding wall
portion for forming the internal flow path is not machined and molded on at least one of the
first metal plate or the second metal plate. In the heat exchange device according to the
nineteenth aspect, by disposing a desired partition member in the internal flow path, a degree
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of freedom in designing the internal flow path through which the heat exchange medium flows
can be easily improved.
[0049] <20> A heat exchange device according to a twentieth aspect of the disclosure is the
heat exchange device according to <19>, further including a partition member that partitions
the internal flow path, in which the partition member is disposed between the recessed portion
and the second metal plate.
[0050] In the twentieth aspect, the internal flow path through which the heat exchange medium
flows can be more freely designed.
[0051] <21> A heat exchange device according to a twenty-first aspect of the disclosure is the
heat exchange device according to <19> or <20>, in which a gap is formed between the first
metal plate and the second metal plate where the joint member is not in contact with a peripheral
edge portion of each of the first metal plate and the second metal plate, and the gap is filled
with the resin fixing portion.
[0052] The heat exchange device of the twenty-first aspect can more reliably maintain
airtightness for a long period of time.
[0053] <22> A heat exchange device according to a twenty-second aspect of the disclosure is
the heat exchange device according to any one of <19> to <21>, in which the recessed portion
forms the internal flow path with the second metal plate therebetween.
[0054] In the twenty-second aspect, the internal flow path can be formed even when the joint
member is not molded into a complicated structure.
[0055] <23> A heat exchange device according to a twenty-third aspect of the disclosure is
the heat exchange device according to any one of <19> to <22>, in which surfaces of the first
metal plate and the second metal plate in contact with the resin fixing portion are subjected to
a roughening treatment.
[0056] In the twenty-third aspect, the surfaces of the first metal plate and the second metal
plate in contact with the resin fixing portion include fine unevenness. Accordingly, the resin
fixing portion is firmly fixed to the first metal plate and the second metal plate by the anchor
effect as compared with a case where the roughening treatment is not performed. As a result,
the heat exchange device of the twenty-third aspect can maintain airtightness for a long period
of time.
[0057] <24> A heat exchange device according to a twenty-fourth aspect of the disclosure is
the heat exchange device according to any one of <19> to <23>, in which a material of the joint
member is a resin, and the joint member and the resin fixing portion are fused.
[0058] In the twenty-fourth aspect, the resin fixing portion and the joint member are firmly
fixed to each other. As a result, the heat exchange device of the twenty-fourth aspect can
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maintain airtightness for a longer period of time.
Advantageous Effects of Invention
[0059] According to the disclosure, a heat exchange device having excellent airtightness even
when a joint member is not welded or brazed, and a method for manufacturing the heat
exchange device are provided.
According to the disclosure, there is provided a heat exchange device capable of
improving a degree of freedom in designing an internal flow path through which a heat
exchange medium flows.

CLAIMS
1. A heat exchange device, comprising:
a heat exchange main body portion that has an internal flow path through which a heat
exchange medium flows and a metal wall portion including a through-hole that communicates
with the internal flow path;
a joint member that has a protruding portion including an opening through which the
heat exchange medium is supplied or discharged and protruding toward an outside of the heat
exchange main body portion via the through-hole, and a hollow portion for causing the opening
and the internal flow path to communicate with each other; and
a resin sealing portion that seals a gap between an inner peripheral surface of the
through-hole and an outer peripheral surface of the protruding portion.
2. A heat exchange device, comprising:
a heat exchange main body portion that has a metal wall portion including a throughhole;
a first component that covers the through-hole; and
a second component that is connected to the first component, wherein:
the heat exchange main body portion further has an internal flow path through which
a heat exchange medium flows,
the first component has:
a first connecting portion including a first opening, and to which the second
component is connected,
a first hollow portion for causing the first opening and the internal flow path
to communicate with each other, and
a resin fixing portion that is fixed to the metal wall portion, and
the second component has:
a second connecting portion that includes a second opening through which the
heat exchange medium is supplied or discharged, and to which a supply unit that supplies the
heat exchange medium to the internal flow path or a discharge unit that discharges the heat
exchange medium from the internal flow path is connected, and
a second hollow portion that causes the second opening and the first opening
to communicate with each other.
3. The heat exchange device according to claim 2, further comprising:
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a packing that seals a gap between the first component and the second component.
4. The heat exchange device according to claim 2 or 3, wherein:
the first component includes a joint member,
the joint member includes a protruding portion that is the first connecting portion and
a hollow portion that is the first hollow portion,
the joint member does not include a resin sealing portion that is the resin fixing portion,
the protruding portion protrudes toward an outside of the heat exchange main body
portion via the through-hole, and
the resin sealing portion seals a gap between an inner peripheral surface of the throughhole and an outer peripheral surface of the protruding portion.
5. The heat exchange device according to claim 1 or 4, wherein:
the heat exchange main body portion has a facing wall portion facing the metal wall
portion,
the joint member has a projecting portion that projects from the outer peripheral
surface of the protruding portion over an entire periphery of the outer peripheral surface of the
protruding portion, and
the projecting portion is in contact with an inner surface of the metal wall portion and
an inner surface of the facing wall portion.
6. The heat exchange device according to any one of claims 1, 4, and 5, wherein a
surface of the metal wall portion in contact with the resin sealing portion is subjected to a
roughening treatment.
7. The heat exchange device according to any one of claims 1 and 4 to 6, wherein the
resin sealing portion has a covering portion that covers a periphery of the through-hole on an
outer surface of the metal wall portion.
8. The heat exchange device according to claim 7, wherein:
the joint member has a projecting portion that projects from the outer peripheral
surface of the protruding portion over an entire periphery of the outer peripheral surface of the
protruding portion, and
the covering portion has a first covering portion that covers a first region facing the
projecting portion on the outer surface of the metal wall portion.
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9. The heat exchange device according to claim 8, wherein the covering portion has a
second covering portion that covers a second region outside the first region of the outer surface
of the metal wall portion with respect to the through-hole.
10. The heat exchange device according to any one of claims 7 to 9, wherein:
the outer peripheral surface of the protruding portion has:
a distal end side outer peripheral surface,
a proximal end side outer peripheral surface having a diameter larger than that
of the distal end side outer peripheral surface, and
a step surface that couples the distal end side outer peripheral surface and the
proximal end side outer peripheral surface; and
the covering portion covers only the proximal end side outer peripheral surface of the
outer peripheral surface of the protruding portion.
11. The heat exchange device according to any one of claims 5 to 10, wherein:
the heat exchange main body portion has a facing wall portion facing the metal wall
portion,
the joint member has a projecting portion that projects from the outer peripheral
surface of the protruding portion over an entire periphery of the outer peripheral surface of the
protruding portion,
the projecting portion has a notch portion that forms a flow path between the notch and
an inner surface of the facing wall portion, and
the flow path causes the hollow portion and the internal flow path to communicate with
each other.
12. The heat exchange device according to claim 11, wherein a cross-sectional shape
of the notch portion is an arch shape.
13. The heat exchange device according to any one of claims 1 and 4 to 12, wherein:
the outer peripheral surface of the protruding portion is made of a metal, and
a surface of the outer peripheral surface of the protruding portion in contact with the
resin sealing portion is subjected to a roughening treatment.
14. The heat exchange device according to any one of claims 1 and 4 to 12, wherein:
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the outer peripheral surface of the protruding portion is made of a resin, and
the outer peripheral surface of the protruding portion and the resin sealing portion are
fused.
15. The heat exchange device according to any one of claims 1 and 4 to 14, wherein
the resin sealing portion is formed by injection molding.

16. A method for manufacturing a heat exchange device, the method comprising:
a preparation step of preparing a joint member having a protruding portion;
an insert step of disposing the joint member inside a heat exchange main body portion
having a metal wall portion including a through-hole and protruding the protruding portion
toward an outside of the heat exchange main body portion via the through-hole; and
a sealing step of forming a resin sealing portion in a gap between an inner peripheral
surface of the through-hole and an outer peripheral surface of the protruding portion and sealing
the gap.
17. The method for manufacturing a heat exchange device according to claim 16,
wherein:
the heat exchange main body portion has:
a pair of metal members facing each other, and
a resin joint portion that joins the pair of metal members;
one of the pair of metal members includes the metal wall portion; and
in the sealing step, the resin sealing portion is formed, and the resin joint portion is
formed.
18. The method for manufacturing a heat exchange device according to claim 16 or
17, further comprising:
a roughening step of performing a roughening treatment on a surface of the metal wall
portion with which the resin sealing portion is brought into contact,
wherein the roughening step is executed before the sealing step.