U.S. patent application number 17/566228 was filed with the patent office on 2022-04-21 for heat exchanger and manufacturing method thereof.
The applicant listed for this patent is HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD.. Invention is credited to HAI HUANG, XINJIAN WANG, WEIDONG XU.
Application Number | 20220120505 17/566228 |
Document ID | / |
Family ID | 1000006108994 |
Filed Date | 2022-04-21 |
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United States Patent
Application |
20220120505 |
Kind Code |
A1 |
WANG; XINJIAN ; et
al. |
April 21, 2022 |
HEAT EXCHANGER AND MANUFACTURING METHOD THEREOF
Abstract
A heat exchanger includes a main body portion and a cover. The
main body portion includes a heat exchange core, a collecting pipe
portion and a first mounting shell. The collecting pipe portion
includes a first collecting pipe portion and a second collecting
pipe portion. Both the first collecting pipe portion and the second
collecting pipe portion are provided with mounting end plates. Two
ends of the first mounting shell are hermetically connected to the
mounting end plates by brazing. The first mounting shell encloses
part of the heat exchange core in a circumferential direction. Two
ends of the cover are hermetically connected to the mounting end
plates by bonding. The cover and the first mounting shell are
arranged in an enclosing manner in the circumferential direction.
The heat exchanger improves stability and reliability. A
manufacture method of the heat exchanger is also disclosed.
Inventors: |
WANG; XINJIAN; (Hangzhou
City, CN) ; HUANG; HAI; (Singapore, SG) ; XU;
WEIDONG; (Hangzhou City, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. |
Hangzhou City |
|
CN |
|
|
Family ID: |
1000006108994 |
Appl. No.: |
17/566228 |
Filed: |
December 30, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2020/116978 |
Sep 23, 2020 |
|
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17566228 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F28D 7/1684 20130101;
F28F 9/268 20130101; F28F 9/18 20130101 |
International
Class: |
F28D 7/16 20060101
F28D007/16; F28F 9/18 20060101 F28F009/18; F28F 9/26 20060101
F28F009/26 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 30, 2019 |
CN |
201910947967.3 |
Claims
1. A heat exchanger, comprising: a main body portion and a cover;
the main body portion comprising a heat exchange core, a collecting
pipe portion and a first mounting shell; the heat exchange core
comprising at least one heat exchange tube, the heat exchange tube
having at least one tube inner channel and a tube wall located on a
periphery of the tube inner channel; the collecting pipe portion
comprising a first collecting pipe portion and a second collecting
pipe portion, the first collecting pipe portion and the second
collecting pipe portion being located on two sides of the heat
exchange core along a length direction of the heat exchange core,
respectively; each of the first collecting pipe portion and the
second collecting pipe portion comprising a mounting end plate; the
mounting end plates being hermetically connected to the heat
exchange tube by brazing; the tube inner channel of the heat
exchange tube being in communication with an inner cavity of the
first collecting pipe portion and an inner cavity of the second
collecting pipe portion; and the first mounting shell enclosing a
part of the heat exchange core in a circumferential direction of
the heat exchange core, two ends of the first mounting shell along
the length direction of the heat exchange core being hermetically
connected to the mounting end plates by brazing; two ends of the
cover along the length direction of the heat exchange core being
hermetically connected to the mounting end plates by bonding; the
cover and the first mounting shell being arranged in an enclosing
manner along the circumferential direction of the heat exchange
core, and the cover and the first mounting shell being hermetically
connected along the length direction of the heat exchange core by
bonding.
2. The heat exchanger according to claim 1, wherein the first
mounting shell comprises a first connecting wall and two first side
walls, the two first side walls are opposite to each other, the two
first side walls are connected to opposite sides of the first
connecting wall along the length direction of the heat exchange
core, and the first side walls extend from the first connecting
wall along a height direction of the heat exchange core.
3. The heat exchanger according to claim 2, wherein the heat
exchange tube is provided with a plurality of channels, the
plurality of channels are arranged along a direction parallel to
the first connecting wall.
4. The heat exchanger according to claim 2, wherein the first
mounting shell further comprises a first flange portion connected
to an end of the first side wall, the first flange portion extends
from the first side wall in a direction away from the heat exchange
core; and the cover comprises a second connecting wall and two
extension portions connected to the second connecting wall, the two
extension portions are located on different sides in a width
direction of the second connecting wall, respectively, at least
part of the heat exchange core is located between the first
connecting wall and the second connecting wall, the extension
portion and the first flange portion are at least partially
arranged oppositely along the height direction of the heat exchange
core, and the extension portion is at least partially bonded to the
first flange portion.
5. The heat exchanger according to claim 4, wherein a side of the
cover facing the heat exchange core is further provided with a
first boss, two sides of the first boss in a width direction of the
heat exchange core are in contact with the two first flange
portions, respectively, and at least part area of the extension
portion located on a periphery of the first boss is connected to
the first flange portion by bonding.
6. The heat exchanger according to claim 5, wherein a height of the
first boss is 0.1 mm to 1 mm; and a width of an area of the
extension portion for bonding with the first flange portion along
an extension direction away from the second connecting wall is
greater than or equal to 3 mm.
7. The heat exchanger according to claim 5, wherein the first boss
is provided with a recessed portion, the recessed portion is
recessed from an end in a convex direction of the first boss along
a direction away from the heat exchange core, and the heat exchange
core is connected with a side of the recessed portion by direct
contact, or by bonding.
8. The heat exchanger according to claim 7, wherein a distance
between a bottom of the recessed portion and a side of the cover
away from the heat exchange core is greater than or equal to a
distance from the bottom of the recessed portion to a top of the
first boss.
9. The heat exchanger according to claim 4, wherein the first
mounting shell further comprises a second flange portion connected
to an end of the first flange portion, the second flange portion
extends from the first flange portion along the height direction of
the heat exchange core; and the second flange portion is arranged
opposite to at least part area of a side wall of the extension
portion along a width direction of the heat exchange core, and a
side of the second flange portion facing the side wall of the
extension portion is connected with the at least part area of the
side wall of the extension portion by bonding.
10. The heat exchanger according to claim 2, wherein the cover
comprises a second connecting wall and two second side walls, the
two second side walls are connected to different sides in a width
direction of the second connecting wall; the second side walls
extend from the second connecting wall to a heat exchange core
locating side; and the heat exchange core is located between the
first connecting wall and the second connecting wall; and along the
height direction of the heat exchange core, a length of the first
side wall is greater than a length of the second side wall; and the
second side wall is fixed to a side of the first side wall away
from the heat exchange core by bonding.
11. The heat exchanger according to claim 1, wherein the mounting
end plate comprises a first plate portion and a second boss, the
second boss protrudes from the first plate portion toward a side of
the heat exchange core; the mounting end plate is provided with an
insertion hole, a part of the heat exchange tube is received in the
insertion hole, the insertion hole extends through the second boss
and the first plate portion, an end of the cover close to the
mounting end plate is provided with a third flange portion
extending in a direction away from the heat exchange core, and at
least part area of the first plate portion located on a periphery
of the second boss is fixed to the third flange portion by
bonding.
12. The heat exchanger according to claim 1, wherein a material of
the cover is a non-metallic material.
13. The heat exchanger according to claim 1, wherein a glue located
between the cover and the first mounting shell, and located between
the cover and the mounting end plate is a high-strength epoxy-based
two-component structural glue, or a high-strength epoxy-based
single-component sealing structural glue, and a thickness of the
glue is 0.1 mm to 0.5 mm.
14. The heat exchanger according to claim 13, wherein surfaces of
the cover, the first mounting shell and the mounting end plate for
contacting respectively with the glue are selected from one of a
flat surface and an uneven tongued and grooved surface.
15. A manufacturing method of a heat exchanger, comprising
following steps: providing a heat exchange core, a first collecting
pipe portion, a second collecting pipe portion and a first mounting
shell, the heat exchange core comprising at least one heat exchange
tube, each of the first collecting pipe portion and the second
collecting pipe portion comprising a mounting end plate, the
mounting end plate being provided with an insertion hole adaptable
to the heat exchange tube; inserting one end of the heat exchange
tube in a length direction of the heat exchange tube into the
insertion hole provided on the mounting end plate of the first
collecting pipe portion, inserting the other end of the heat
exchange tube in the length direction into the insertion hole
provided on the mounting end plate of the second collecting pipe
portion, and arranging the first mounting shell in close contact
with the heat exchange core along a length direction of the heat
exchange core; fixing the heat exchange core, the first collecting
pipe portion, the second collecting pipe portion and the first
mounting shell as a whole by brazing; wherein a tube wall of the
heat exchange tube is hermetically connected to the mounting end
plate at the insertion hole, and a tube inner channel of the heat
exchange tube is in communication with an inner cavity of the first
collecting pipe portion and an inner cavity of the second
collecting pipe portion; and providing a cover, hermetically
connecting the cover and the first mounting shell in the length
direction of the heat exchange core by bonding, and hermetically
connecting the cover and the mounting end plate by bonding; the
cover and the first mounting shell being arranged in an enclosing
manner along a circumferential direction of the heat exchange
core.
16. A heat exchanger, comprising: a first collecting pipe defining
a first chamber extending along a height direction; a second
collection pipe extending parallel to the first collecting pipe,
the second collection pipe defining a second chamber, the first
collecting pipe and second collection pipe forming a refrigerant
inlet and a refrigerant outlet; a plurality of heat exchange tubes
connecting the first collecting pipe and the second collecting
pipe, each exchange tube extending along a length direction
perpendicular to the height direction and forming a plurality of
micro-channels fluid communication with the first and second
collecting pipes, the micro-channels being arranged along a width
direction perpendicular to the height direction and the length
direction, the micro-channels in fluid communication with the first
chamber, the second chamber, the refrigerant inlet and the
refrigerant outlet; and an outer shell connecting between the first
and second heat exchange tubes and enclosing around the heat
exchange tubes, the outer shell forming a third chamber located
therein, a coolant inlet fluid communication with the third chamber
and a coolant outlet fluid communication with the third chamber,
the outer shell comprising a first shell and a second shell
assembled together; wherein the first shell and second shell are
retained to each other by bonding.
17. The heat exchanger according to claim 16, wherein the first
collecting pipe, the second collecting pipe, the second shell are
retained together by brazing, and the first shell are retained to
the first and second collecting pipes by bonding.
18. The heat exchanger according to claim 16, wherein the second
shell forms a receiving slot for receiving all of the heat exchange
tubes therein; the second shell comprise a bottom wall and two side
walls extending upwardly from the bottom wall along the height
direction; the first shell comprises a top wall, a pair of first
flanges connecting with two opposite sides of the top wall in the
width direction, respectively, and a pair of second flanges
connecting with two opposite sides of the top wall in the length
direction, respectively; the first flanges are bonded to two
corresponding side walls, and the second flanges are bonded to the
first and second collecting pipes, respectively.
19. The heat exchanger according to claim 18, wherein the first
flange extends downwardly from top wall along the height direction,
the second flange extending upwardly from the top wall and
extending outwardly from the first flange.
20. The heat exchanger according to claim 18, further comprising a
first pipe and a second pipe disposed at two opposite sides of the
second shell, the first pipe fluid communication with the third
chamber, the second pipe fluid communication with the third
chamber; the first pipe being disposed closer to the first
collecting pipe than the second pipe, the second pipe being
disposed closer to the second collecting pipe than the first pipe;
the first pipe being disposed closer to the top wall than the
second pipe, the second pipe being disposed closer to the bottom
wall than the first pipe.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a bypass continuation of International
Application No. PCT/CN2020/116978, filed on Sep. 23, 2020, which
claims priority to Chinese Patent Application No. 201910947967.3,
filed on Sep. 30, 2019, both of which are hereby incorporated by
reference in their entireties.
TECHNICAL FIELD
[0002] The present disclosure relates to a technical field of heat
exchange, and in particular, to a heat exchanger and a
manufacturing method thereof.
BACKGROUND
[0003] In the related art, a heat exchanger in a heat exchange
system is used as a device for exchanging heat between two fluids.
The heat exchanger includes a heat exchange core, an outer shell, a
collecting pipe, etc. Mostly, various components of the heat
exchanger are sealed and connected by a brazing process. However,
in the related art, the components of the heat exchanger will be
sent into a brazing furnace as a whole after being assembled, with
the heat exchange core being enclosed by the outer shell and the
collecting pipe, which is unbeneficial to the heating effect of the
heat exchange core, and leads to poor brazing and sealing effect of
the heat exchange core itself and poor brazing and sealing effect
between the heat exchange core and its brazed components, resulting
in that leakage is prone to occur, and the reliability of the heat
exchanger is poor.
SUMMARY
[0004] The present disclosure provides a heat exchanger and a
manufacturing method thereof, which is beneficial to improve the
product reliability of the heat exchanger.
[0005] On one hand, the present disclosure provides a heat
exchanger, including: a main body portion and a cover;
[0006] the main body portion including a heat exchange core, a
collecting pipe portion and a first mounting shell;
[0007] the heat exchange core including at least one heat exchange
tube, the heat exchange tube having at least one tube inner channel
and a tube wall located on a periphery of the tube inner
channel;
[0008] the collecting pipe portion including a first collecting
pipe portion and a second collecting pipe portion, the first
collecting pipe portion and the second collecting pipe portion
being located on two sides of the heat exchange core along a length
direction of the heat exchange core, respectively; each of the
first collecting pipe portion and the second collecting pipe
portion including a mounting end plate; the mounting end plates
being hermetically connected to the heat exchange tube by brazing;
the tube inner channel of the heat exchange tube being in
communication with an inner cavity of the first collecting pipe
portion and an inner cavity of the second collecting pipe portion;
and
[0009] the first mounting shell enclosing a part of the heat
exchange core in a circumferential direction of the heat exchange
core, two ends of the first mounting shell along the length
direction of the heat exchange core being hermetically connected to
the mounting end plates by brazing; two ends of the cover along the
length direction of the heat exchange core being hermetically
connected to the mounting end plates by bonding; the cover and the
first mounting shell being arranged in an enclosing manner along
the circumferential direction of the heat exchange core, and the
cover and the first mounting shell being hermetically connected
along the length direction of the heat exchange core by
bonding.
[0010] On the other hand, the present disclosure also provides a
manufacturing method of a heat exchanger, including following
steps:
[0011] providing a heat exchange core, a first collecting pipe
portion, a second collecting pipe portion and a first mounting
shell, the heat exchange core including at least one heat exchange
tube, each of the first collecting pipe portion and the second
collecting pipe portion including a mounting end plate, and the
mounting end plate being provided with an insertion hole adaptable
to the heat exchange tube; inserting one end of the heat exchange
tube in a length direction of the heat exchange tube into the
insertion hole arranged on the mounting end plate of the first
collecting pipe portion, inserting the other end of the heat
exchange tube in the length direction into the insertion hole
arranged on the mounting end plate of the second collecting pipe
portion, and arranging the first mounting shell in close contact
with the heat exchange core along a length direction of the heat
exchange core;
[0012] fixing the heat exchange core, the first collecting pipe
portion, the second collecting pipe portion and the first mounting
shell as a whole by brazing; wherein a tube wall of the heat
exchange tube is hermetically connected to the mounting end plate
at the insertion hole, and a tube inner channel of the heat
exchange tube is in communication with an inner cavity of the first
collecting pipe portion and an inner cavity of the second
collecting pipe portion; and
[0013] providing a cover, hermetically connecting the cover and the
first mounting shell in the length direction of the heat exchange
core by bonding, and hermetically connecting the cover and the
mounting end plate by bonding; the cover and the first mounting
shell being arranged in an enclosing manner along a circumferential
direction of the heat exchange core.
[0014] For the heat exchanger, the heat exchange core, the
collecting pipe portion and the first mounting shell are all fixed
by brazing, and the first mounting shell surrounds a part of the
heat exchange core along the circumferential direction of the heat
exchange core, which is beneficial to ensure that temperature of
the first mounting shell close to an inner side of the heat
exchange core is in consistent with temperature of the first
mounting shell far from an outer side of the heat exchange core
when the heat exchange core, the collecting pipe portion and the
first mounting shell are fixed by brazing, and thereby improving
the connection quality among the heat exchange core, the collecting
pipe portion and the first mounting shell. The cover is fixed with
the mounting end plate of the collecting pipe portion and the first
mounting shell by bonding, respectively, which is beneficial to
improve connection quality between the cover and the mounting end
plate and that between the cover and the first mounting shell, so
as to be beneficial to improve stability and reliability of the
whole heat exchanger.
BRIEF DESCRIPTION OF DRAWINGS
[0015] FIG. 1 is a schematic structural perspective view of a heat
exchanger provided by an embodiment of the present disclosure;
[0016] FIG. 2 is a schematic structural exploded view of a main
body portion and a cover of the heat exchanger provided by the
embodiment of the present disclosure;
[0017] FIG. 3 is a structural exploded view of the main body
portion in FIG. 2 of the present disclosure;
[0018] FIG. 4 is a schematic structural view of a heat exchange
core provided by an embodiment of the present disclosure;
[0019] FIG. 5 is a schematic view of a connection structure of a
first mounting shell and a cover provided by an embodiment of the
present disclosure;
[0020] FIG. 6 is an enlarged view of a circled portion shown in
FIG. 5 of the present disclosure;
[0021] FIG. 7 is a second schematic view of the connection
structure of the first mounting shell and the cover provided by an
embodiment of the present disclosure;
[0022] FIG. 8 is a third schematic view of the connection structure
of the first mounting shell and the cover provided by an embodiment
of the present disclosure;
[0023] FIG. 9 is a fourth schematic view of the connection
structure of the first mounting shell and the cover provided by an
embodiment of the present disclosure;
[0024] FIG. 10 is a schematic structural view of a mounting end
plate provided by an embodiment of the present disclosure; and
[0025] FIG. 11 is a schematic structural cross-sectional view of
the mounting end plate taken along direction A-A of FIG. 10.
DETAILED DESCRIPTION
[0026] In order to make the objectives, technical solutions and
advantages of the present disclosure clearer, the following further
describes the present disclosure in detail with reference to the
accompanying drawings and embodiments. It should be understood that
the specific embodiments described here are only used to explain
the present disclosure, and are not used to limit the present
disclosure.
[0027] The heat exchanger provided in the present disclosure may be
used in a heat exchange system, and the heat exchanger may be used
as an evaporator, a condenser, an intermediate heat exchanger, or
the like.
[0028] As shown in FIGS. 1 to 11, the heat exchanger provided in
the present embodiment includes a main body portion 11 and a cover
12.
[0029] The main body portion 11 includes a heat exchange core 100,
a collecting pipe portion and a first mounting shell 301 which are
brazed as a whole.
[0030] The heat exchange core 100 includes at least one heat
exchange tube 101. Each of the heat exchange tube 101 has at least
one tube inner channel 102 and a tube wall 103 located on a
periphery of the tube inner channel 102. The heat exchange tube 101
may be a circular tube, an elliptical tube, or a microchannel flat
tube. In related implementations of the present disclosure,
exemplarily, the heat exchange tube 101 is a microchannel flat
tube. When there are multiple heat exchange tubes 101, the multiple
heat exchange tubes 101 may be arranged at intervals with each
other. In the exploded view of the main body portion 11 shown in
FIG. 3, multiple heat exchange tubes 101 are distributed in two
rows in a width direction of the heat exchange core 100. Each row
of the heat exchange tubes 101 are arranged at intervals from each
other. Referring to FIG. 4, the heat exchange core 100 may further
include at least one heat sink 104. When there are multiple heat
sinks 104, the heat sinks 104 and the heat exchange tubes 101 may
be arranged alternately. That is, each heat sink 104 is laid in a
row above or below the heat exchange tube 101 adjacent to the heat
sink 104. The use of the heat sink 104 can enhance the heat
transfer effect of the fluid in the heat exchange tube 101. In
FIGS. 3 and 4, a case in which only one heat sink 104 exists is
shown. In actual products, there may be multiple heat sinks 104.
The heat sinks 104 and the heat exchange tubes 101 are fixed by
brazing. The above-mentioned heat sink 104 may be a fin, or other
heat dissipation structure which is capable of realizing heat
transfer. The above-mentioned heat sink 104 may be an integral
structure or a combined structure. The overall structure of the
heat exchange core 100 may be a cuboid structure.
[0031] The heat exchange core 100, the collecting pipe portion and
the first mounting shell 301 are fixed as an integral structure by
brazing. The heat exchange core 100 composed of multiple heat
exchange tubes 101 and/or heat sinks 104, the collecting pipe
portion and the first mounting shell 301 are sent into a brazing
furnace for brazing as a whole. Of course, the heat exchange core
100 composed of the multiple heat exchange tubes and/or fins, the
collecting pipe portion, and the first mounting shell 301 may also
be brazed for multiple times. For example, firstly, the heat
exchange core 100 is brazed with the collecting pipe portion, and
then is secondly brazed with the first mounting shell.
[0032] The collecting pipe portion includes a first collecting pipe
portion 201 and a second collecting pipe portion 202 disposed on
two sides in a length direction of the heat exchange core 100. Each
of the first collecting pipe portion 201 and the second collecting
pipe portion 202 has a mounting end plate 203 for fixed
installation with the heat exchange tube 101. The mounting end
plate 203 is provided with an insertion hole 204 adaptable to the
heat exchange tube 101. Referring to FIGS. 2, FIGS. 3 and FIGS. 4,
in the insertion hole 204, the mounting end plate 203 and the tube
wall 103 of the heat exchange tube 101 may be hermetically and
fixedly connected by brazing. The tube inner channel 102 of the
heat exchange tube 101 is communicated with an inner cavity of the
first collecting pipe portion 201 and an inner cavity of the second
collecting pipe portion 202. At least part of flow area for a first
medium to flow is formed together by the tube inner channel 102,
the inner cavity of the first collecting pipe portion 201, and the
inner cavity of the second collecting pipe portion 202 jointly.
[0033] The first collecting pipe portion 201 may be formed by
fixing multiple plates as a whole by brazing after splicing.
Similarly, the second collecting pipe portion 202 may also be
formed by fixing multiple plates as a whole by brazing after
splicing. The mounting end plate 203 is one of the multiple plates,
or a part of area of a plate body of one of the multiple
plates.
[0034] The first medium may be a refrigerant. In FIG. 1, in order
to realize the communication between the first medium and outside
of the heat exchanger, the collecting pipe portion may further
include a first inlet pipe portion 205 and a first outlet pipe
portion 206. One collecting pipe portion of the first collecting
pipe portion 201 and the second collecting pipe portion 202, for
example, the first collecting pipe portion 201, may be used for
inflow and outflow of the first medium at the same time. The inner
cavity thereof may be provided with, for example, a baffle
structure, so that an inlet and an outlet of the first collecting
pipe portion 201 are not directly communicated. The second
collecting pipe 202 is not provided with inlet and outlet
functions. The fluid flows into the inner cavity of the first
collecting pipe portion 201 through the first inlet pipe portion
205 of the first collecting pipe portion 201, and then flows into
the inner cavity of the second collecting pipe portion 202 through
the tube inner channels 102 of the heat exchange tubes 101 on one
side of the heat exchange core 100 in the width direction. After
flowing through the tube inner channels 102 of the plurality of
heat exchange tubes 101, the fluid converges at the second
collecting pipe portion 202, and enters the tube inner channels 102
of the heat exchange tubes 101 on the other side of the heat
exchange core 100 in the width direction. Then, the fluid enters
the inner cavity of the first collecting pipe portion 201, and
finally flows out of the heat exchanger from the first outlet pipe
portion 206 of the first collecting pipe portion 201. Of course,
the first collecting pipe portion 201 may be used for the inflow of
the first medium, and the second collecting pipe portion 202 may be
used for the outflow of the first medium. That is, the first
collecting pipe portion 201 may include the first inlet pipe
portion 205, and the second collecting pipe portion 202 may include
the first outlet pipe portion 206, on which the present disclosure
does not define too much limitations. The first inlet pipe portion
205 and the first outlet pipe portion 206 may be integrally formed
with other structures of the collecting pipe portion; or may be
assembled and combined, and then fixed as a whole by brazing, or
hermetically fixed by other connection methods.
[0035] The first mounting shell 301 is combined and fixed with the
heat exchange core 100 along the length direction of the heat
exchange core 100 by brazing, and two ends of the first mounting
shell 301 in the length direction of the heat exchange core 100 are
hermetically connected to the mounting end plates 203 by brazing.
The first mounting shell 301 and the mounting end plates 203 are
combined to form a first accommodating area having a first opening
304. The first opening 304 is disposed toward the cover 12. At
least part of the heat exchange core 100 may be placed in the first
accommodating area through the first opening 304.
[0036] The cover 12 closes the first opening 304. The cover 12 and
the first mounting shell 301 are hermetically connected in the
length direction of the heat exchange core 100. The specific
sealing manner may be that the cover 12 and the first mounting
shell 301 are hermetically connected by bonding. Two ends of the
cover 12 in the length direction of the heat exchange core 100 are
hermetically connected to the mounting end plate 203. The specific
sealing manner may be that the cover 12 and the mounting end plate
203 are hermetically connected by bonding. The cover 12 and the
first mounting shell 301 form an outer shell enclosing the heat
exchange core 100 along a circumferential direction of the heat
exchange core 100. In other words, the outer shell and the mounting
end plate 203 form an inner space capable of accommodating the at
least part of the heat exchange core 100 in the circumferential
direction of the heat exchange core 100. The outer shell and the
mounting end plate 203 enclose at least part of the flow area for a
second medium to flow. In simple terms, the first mounting shell
301 wraps most of sides of the heat exchange core 100 in the
circumferential direction of the heat exchange core 100, and the
cover 12 wraps remaining side the heat exchange core 100 in the
circumferential direction of the heat exchange core 100.
[0037] The second medium may be a coolant, such as an aqueous
glycol solution. In FIG. 1, in order to realize the communication
between the second medium and the outside of the heat exchanger,
the heat exchanger may further include a second inlet pipe portion
305 and a second outlet pipe portion 306. The second inlet pipe
portion 305 and the second outlet pipe portion 306 may be located
on opposite sides of the outer shell. The first mounting shell 301
may be provided with an opening for communicating with the second
inlet pipe portion 305 and an opening for communicating with the
second outlet pipe portion 306. The second inlet pipe portion 305
may also be welded, or integrally formed, with the first mounting
shell 301. The second outlet pipe portion 306 may also be welded,
or integrally formed, with the first mounting shell 301.
[0038] In the structure shown in FIG. 1, the second medium may
enter the heat exchanger from the second inlet pipe portion 305.
The first medium flows in the heat exchange tube 101. The second
medium exchanges heat with the first medium by partition walls, and
finally flows out of the heat exchanger from the second outlet pipe
portion 306.
[0039] As shown in FIG. 5, in a specific implementation provided by
the present disclosure, the first mounting shell 301 is connected
to the cover 12, the first mounting shell 301 includes a first
connecting wall 401 and two first side walls 402 opposite to each
other. The two first side walls 402 are connected to the first
connecting wall 401 along the length direction of the heat exchange
core 100, and the two first side walls 402 are distributed on two
opposite sides of the first connecting wall 401. The first side
wall 402 extends from the first connecting wall 401 along a height
direction of the heat exchange core. In other words, the first side
wall 402 extends in a direction perpendicular to a plane where the
first connecting wall 401 is located. The first mounting shell 301
is substantially a shell with a U-shaped cross section.
[0040] The heat exchange tube 101 is a microchannel flat tube. The
heat exchange tube 101 has multiple channels arranged side by side.
The width direction of the heat exchange tube 101 is substantially
parallel to the first connecting wall 401. Correspondingly, the
multiple channels of each of the heat exchange tube 101 are
arranged in a direction parallel to the first connecting wall
401.
[0041] Further referring to FIGS. 5 and 6, the first mounting shell
301 further includes a first flange portion 403 connected to an end
of the first side wall 402. The first flange portion 403 is
perpendicular to the first side wall 402, and extends in a
direction away from the heat exchange core 100.
[0042] The cover 12 includes a second connecting wall 404 and two
extension portions 405 connected to the second connecting wall 404.
The two extension portions 405 extends toward two opposite sides of
the second connecting wall 404 in the width direction,
respectively. The first connecting wall 401 and the second
connecting wall 404 are at least partially arranged opposite to
each other. At least part of the heat exchange core 100 is located
between the first connecting wall 401 and the second connecting
wall 404. The extension portion 405 and the first flange portion
403 are at least partially arranged opposite to each other along
the height direction of the heat exchange core. The extension
portion 405 and the first flange portion 403 are fixed by bonding,
so that the cover 12 and the mounting end plate 203 are
hermetically connected in the length direction of the heat exchange
core 100.
[0043] Furthermore, as shown in FIG. 6, the enlarged schematic view
of the partial structure of FIG. 5, the side of the cover 12 facing
the heat exchange core 100 is further provided with a first boss
310. In the width direction of the heat exchange core 100, the size
of the first boss 310 is larger than the size of the first opening
304. Two sides of the first boss 310 in the width direction of the
heat exchange core 100 are in contact with the two first flange
portions 403, respectively. A first adhesive area is formed by at
least part of the extension portion 405 corresponding to outer
periphery of the first boss 310. For the glue, refer to the black
filled area between the extension portion 405 and the first flange
portion 403 in FIG. 6. The glue is indicated by M1. The glue M1 may
be coated on the first adhesive area. In the first adhesive area,
the extension portion 405 and the first flange portion 403 are
adhered. Of course, the glue may also be coated on at least part of
surface of the first flange portion 403 facing the extension
portion 405, or, the first adhesive area of the extension portion
405 and at least part of surface of the first flange portion 403
facing the extension portion 405 are both coated with the glue. The
heat exchange core 100 is connected with the top of the first boss
310 by direct contact, or by bonding. The first boss 310 may be fix
the heat exchange core 100 so as to improve the stability of the
heat exchanger.
[0044] The height h1 of the first boss 310 is 0.1 mm to 1 mm, and
in some implementations, 0.3 mm to 0.5 mm may be selected. The
arrangement of the first boss 310 ensures the gluing thickness of
the glue. That is, the thickness of the glue M1 may be 0.1 mm to 1
mm, and in some implementations, may be 0.3 mm to 0.5 mm. At the
same time, the first boss 310 also has a function of preventing the
glue from overflowing into a cavity where the heat exchange core
100 is located. Along the extension direction away from the second
connecting wall 404, the width W1 of the adhesive area is greater
than or equal to 3 mm. That is, the width of the glue M1 is greater
than or equal to 3 mm. The relatively large bonding surface size is
beneficial to improve the reliability of the bonding of heat
exchanger products.
[0045] In order to expand the space of the heat exchange core 100
in the outer shell, as shown in FIG. 7, a recessed portion 311 is
provided in the middle of the first boss 310. The recessed portion
311 is recessed from an end in the convex direction of the first
boss 310 along a direction away from the heat exchange core 100. An
opening of the recessed portion 311 is opposite to the first
opening 304. In the recessed portion 311, the heat exchange core
100 and the cover 12 is connected with the side of the heat
exchange core 100 by direct contact, or by bonding. On one hand,
the recessed portion 311, which has a positioning and fixing effect
on the heat exchange core 100, is beneficial to improve the
stability of the heat exchanger product, and on the other hand, is
beneficial to expand the space of the cavity for accommodating at
least part of the heat exchange core 100, which is beneficial to
the miniaturization of heat exchanger products.
[0046] A distance L1 between a bottom of the recessed portion 311
and a side of the cover 12 away from the heat exchange core 100 is
greater than a distance L2 between the bottom of the recessed
portion 311 and a top of the first boss 310. By ensuring that the
recessed portion 311 of the cover 12 is not too deep, and that a
side of the cover 12 facing the heat exchange core 100 have a
certain thickness as much as possible, the stability of the
connection between the cover 12 and the heat exchange core 100 can
be improved, and the connection strength between the cover 12 and
the first mounting shell 301 can be improved.
[0047] In other implementations, as shown in FIG. 8, the first
mounting shell 301 further includes a second flange portion 406
connected to an end of the first flange portion 403. The second
flange portion 406 is perpendicular to the first flange portion
403, and extends in a direction away from the heat exchange core
100. The second flange portion 406 is opposite to the side wall of
the extension portion 405. The first flange portion 403 and the
second flange portion 406 are substantially arranged in L-shaped. A
second adhesive area is formed by at least part area of the
extension portion 405 corresponding to outer periphery of the first
boss 310. The glue attached to the second adhesive area is marked
as M2. The glue M2 may be coated on the second adhesive area, or
may be coated on a surface of the first flange portion 403 facing
the second adhesive area. The extension portion 405 and the first
flange portion 403 are adhesively connected by glue M2. A third
adhesive area is formed by at least part area of the side wall of
the extension 405. The glue attached to the third adhesive area is
marked as M3. The glue M3 may be coated on the third adhesive area,
or may be coated on a surface of the second flange portion 406
facing the third adhesive area. The extension portion 405 and the
second flange portion 406 are adhesively connected by glue M3. The
glues M2 and M3 may refer to the black filled area between the
extension portion 405 and the second flange portion 406 in FIG.
8.
[0048] In order to ensure a reliable connection between the cover
12 and the first mounting shell 301, the sum of the width of the
second adhesive area and the width of the third adhesive area needs
to be greater than or equal to 3 mm. That is, the sum of the widths
of the glue M2 and the glue M3 is greater than or equal to 3 mm.
The relatively large bonding surface size is beneficial to improve
bonding reliability of heat exchanger products. In addition, by
bonding the first flange portion 403 and the second flange portion
406 and the extension portion 405 in different directions, the
bonding strength between the cover 12 and the first mounting shell
301 can be effectively improve, and the size of the extension
portion 405 along its extension direction can be shorten, so that
the cover 12 may be made as small as possible under the premise of
ensuring the reliable connection with the first mounting shell 301,
which is beneficial to optimize installation space occupied by the
heat exchanger.
[0049] The present disclosure also provides another implementation
of the cover 12 as shown in FIG. 9. The cover 12 includes a second
connecting wall 404 and two second side walls 407. The two second
side walls 407 are connected to the second connecting wall 404
along the length direction of the heat exchange core 100, and the
two second side walls 407 are distributed on two opposite sides of
the second connecting wall 404 in the width direction. The second
side wall 407 is substantially perpendicular to the second
connecting wall 404.
[0050] The first connecting wall 401 and the second connecting wall
404 are at least partially arranged opposite to each other. In the
circumferential direction of the outer shell, the size of the first
side wall 402 is larger than the size of the second side wall 407.
The two first side walls 402 and the two second side walls 407 are
correspondingly matched respectively, wherein, the second side wall
407 is overlapped with a side of the first side wall 402 away from
the heat exchange core 100 by means of bonding. A fourth adhesive
area is formed by at least part area of the second side wall 407
facing the first side wall 402. The glue attached to the fourth
adhesive area is marked as M4, which can refer to the black filled
area between the first side wall 402 and the second side wall 407
in FIG. 9. The glue M4 may be coated on the fourth adhesive area,
or on a surface of the first side wall 402 facing the fourth
adhesive area.
[0051] Since both the first mounting shell 301 and the cover 12
have a certain wall thickness, when assembling by means of overlap,
by overlapping the shorter side wall to a side of the longer side
wall away from the heat exchange core 100, the area where the
height difference is leaded and influenced by the wall thickness of
the shell is less, which can reduce the problem of the waste of
glue material caused by filling the height difference.
[0052] In the circumferential direction of the outer shell, the
length of the second side wall 407 is greater than or equal to 3
mm, and the length L3 of overlapping area between the second side
wall 407 and the first side wall 402 is greater than or equal to 3
mm. The relatively large bonding surface size is beneficial to
improve the reliability of the bonding of heat exchanger products.
The first side wall 402 abuts against the second connecting wall
404, and the inner side wall of the outer shell forms a
substantially regular rectangular cavity.
[0053] When bonding the first mounting shell 301 and the cover 12,
butting surfaces on both sides of the bonding glue may be full
planes, by which the gluing process is simple and quick, and is
suitable for automated production. The butting surfaces on both
sides of the bonding glue may also be connected to uneven tongued
and grooved surfaces, which is beneficial to improve the connection
strength.
[0054] Furthermore, as shown in FIG. 2, the end of the cover 12
close to the mounting end plate 203 is provided with a third flange
portion 600 extending in a direction away from the heat exchange
core 100. The side surface of the third flange portion 600 facing
the mounting end plate 203 is hermetically connected to the
mounting end plate 203 by bonding.
[0055] For the mounting end plate 203, it is connected to the first
mounting shell 301 by welding, and is connected to the cover 12 by
bonding. Since the first mounting shell 301 and the mounting end
plate 203 are connected by welding, in order to facilitate welding
and improve the welding strength, an end of the first mounting
shell 301 close to the mounting end plate 203 may also extend in
the direction away from the heat exchange core 100 so as to form a
fourth flange portion. A complete annular flange may be formed by
matching the third flange portion 600 and the fourth flange
portion. Of course, due to relatively small limitation on the size
of the welding surface in the brazing method, the first mounting
shell 301 may not be provided with the fourth flange portion, and
the first mounting shell 301 and the mounting end plate 203 are
directly fixed by brazing, on which the present disclosure does not
define too much limitations.
[0056] When the cover 12 and the mounting end plate 203 are bonded,
the abutting surfaces on both sides of the bonding glue may be full
planes, by which the gluing process is simple and quick, and is
suitable for automated production. The butting surfaces on both
sides of the bonding glue may also be connected by tongued and
grooved surfaces, which is beneficial to improve the connection
strength.
[0057] As shown in FIGS. 10 and 11, in the thickness direction of
the mounting end plate 203, the mounting end plate 203 includes a
first plate portion 2031 and a second boss 2032 which are
integrally connected. The insertion hole 204 extends through the
second boss 2032 and the first plate portion 2031. The second boss
2032 protrudes toward a side of the heat exchange core 100 relative
to the first plate portion 2031. The first plate portion 2031 and
the third flange portion 600 are hermetically combined by bonding.
A fifth adhesive area is formed by part area of the first plate
portion 2031 corresponding to a periphery of the second boss 2032.
The glue attached to the fifth adhesive area is marked as M5, which
can refer to the black filled area in FIG. 11.
[0058] The height h2 of the second boss 2032 is 0.1 mm to 1 mm, and
relatively preferably, is 0.3 mm to 0.5 mm. In a direction
perpendicular to the thickness of the mounting end plate, that is,
in a direction in which the surface of the mounting end plate
extends, the length L4 of the first plate portion 2031 beyond the
second boss 2032 is greater than or equal to 3 mm. The second boss
2032 is beneficial to prevent the glue M5 in the fifth adhesive
area from overflowing into the cavity of the outer shell. When
processing and installing the end plate 203, an annular notch may
be cut at the edge of the plate with a certain thickness in a
vertical thickness direction. A second boss 2032 is formed on an
inner side of the annular notch. The first plate portion 2031 is
formed on the other side of the plate without the annular
notch.
[0059] Furthermore, the material of the cover 12 is a metallic
material or a non-metallic material. The heat exchange core 100,
the mounting end plate 203 and the first mounting shell 301 may be
brazed at high temperature. Under conditions of the brazing
process, materials of the heat exchange core 100, the mounting end
plate 203 and the first mounting shell 301 need to be metallic
materials. The heat exchange core 100, the mounting end plate 203
and the first mounting shell 301 may be made of aluminum or
aluminum alloy. The cover 12 and the first mounting shell 301, and
the cover 12 and the mounting end plate 203 are combined by
bonding. The cover 12 does not need to undergo a high-temperature
brazing process, so that selection of material of the cover 12 may
be more flexible. The materials of the cover 12, the heat exchange
core 100, the mounting end plate 203 and the first mounting shell
301 may be the same, or may be other different materials. The
material of the cover 12 may be metallic materials, such as
aluminum, aluminum alloy, copper, copper-aluminum alloy, or
stainless steel, or non-metallic materials, such as rubber or
plastic. The technical solution provided in the present disclosure
is beneficial to extend material types of the cover 12, enrich
product types and application scenarios of heat exchanger products,
and has advantages in cost-effective options and lightweight
options.
[0060] Average thickness of the cover 12 may be similar to that of
the first mounting shell 301, or average thickness of the cover 12
may be greater than average thickness of the shell of the first
mounting shell 301, which is beneficial to improve deformation
resistance of the cover 12 under high fluid pressure and improve
product stability, especially when the material of the cover 12 is
plastic, etc.
[0061] Compared with the way that all components of the heat
exchanger are fixed by welding, since the first mounting shell 301
is a semi-enclosing type shell relative to the heat exchange core
100, when brazing the main body portion as a whole, the heat of the
brazing process may directly act on the heat exchange core 100, the
collecting pipe portion and the first mounting shell 301. In
particular, the heat of the heat exchange core is more controllable
and more accurate, which is beneficial to avoid leakage of the
first medium flow area which is partially leaded by inconsistent
brazing temperature of inside and outside of the heat exchanger
outer shell of the heat exchange core. As for the cover 12, the
cover 12 is connected to the first mounting shell 301 and the
mounting end plate 203 by bonding. The cover 12 is not susceptible
to high temperature deformation due to the influence of the brazing
process. The second medium flow area enclosed by the cover 12, the
first mounting shell 301 and the mounting end plate 203 is not
prone to leakage.
[0062] The first medium may be a refrigerant. Correspondingly, the
second medium is a coolant. The bonding between the cover 12 and
the first mounting shell 301 and that between the cover 12 and the
mounting end plate 203 are suitable for the coolant side fluid with
relatively low pressure, and the heat exchange tube 101 and the
collecting pipe portion fixed by the brazing process are still used
for relatively high pressure refrigerant side fluid, which is
beneficial to improve flow reliability of the two fluids. Size
design based on the bonding area and glue thickness design of the
gluing area, are beneficial to compact structure of the heat
exchanger, which can meet the needs of lightweight and high
efficiency.
[0063] The glues M1 to M5 used in the bonding method of the
embodiment of the present disclosure may all be high-strength
epoxy-based two-component structural glue or single-component
sealing structural glue. Both high-strength epoxy-based
two-component structural glue and single-component sealing
structural glue have certain corrosion resistance, which is
beneficial to improve corrosion resistance of heat exchanger
products. The gluing thickness of the sealing structural glue is
0.1 mm to 0.5 mm, and the relatively preferably, thickness is 0.2
mm to 0.3 mm.
[0064] The present disclosure also provides a manufacturing method
of the heat exchanger. In an implementation provided in the present
disclosure, the manufacturing method includes:
[0065] Step S101, providing the heat exchange core 100, the first
collecting pipe portion 201, the second collecting pipe portion 202
and the first mounting shell 301;
[0066] The heat exchange core 100 includes at least one heat
exchange tube 101. Each of the first collecting pipe portion 201
and the second collecting pipe portion 202 are formed with a
mounting end plate 203 for fixed installation with the heat
exchange tube 101. The mounting end plate 203 is provided with an
insertion hole 204 adaptable to the heat exchange tube 101. One end
of the heat exchange tube 101 is inserted into the insertion hole
204 provided on the mounting end plate 203 of the first collecting
pipe section 201, and the other end of the heat exchange tube 101
is inserted into the insertion hole 204 provided on the mounting
end plate 203 of the second collecting pipe section 202. And, the
first mounting shell 301 is arranged in attached and arranged along
the length direction of the heat exchange core 100.
[0067] Step S102, fixing the heat exchange core 100, the first
collecting pipe portion 201, the second collecting pipe portion 202
and the first mounting shell 301 as a whole by brazing. A tube wall
103 of the heat exchange tube 101 is hermetically connected to the
mounting end plate 203 at the insertion hole 204. The first
mounting shell 301 is hermetically connected to the mounting end
plate 203. The first mounting shell 301 is fixedly connected to the
heat exchange core 100 along the length direction of the heat
exchange core 100, wherein, the tube inner channel 102 of the heat
exchange tube 101 is in communication with an inner cavity of the
first collecting pipe portion 201 and an inner cavity of the second
collecting pipe portion 202.
[0068] Step S103, providing the cover 12, hermetically connecting
the cover 12 and the first mounting shell 301 along the length
direction of the heat exchange core 100 by bonding, and
hermetically connecting the cover 12 and the mounting end plate 203
by bonding. The cover 12 and the first mounting shell 301 are
arranged in an enclosing manner along a circumferential direction
of the heat exchange core 100.
[0069] The above descriptions are only preferred embodiments of the
present disclosure, and are not used to limit the present
disclosure. For those skilled in the art, the present disclosure
may have various modifications and changes. Any modification,
equivalent replacement, improvement, etc., made within the spirit
and principles of the present disclosure shall be included in the
protection scope of the present disclosure.
* * * * *