Heat exchanger manufacturing method, heat exchanger and water supply device

Abstract

The invention relates to a heat exchanger manufacturing method, a heat exchanger and a water supply device. The manufacturing method of the heat exchanger comprises the steps that a plurality of heat exchange partition plates are formed, so that each heat exchange partition plate is provided with a first area and a second area; the heat exchange partition plates are sequentially arranged in a stacked mode, a fluid channel is formed by every two adjacent heat exchange partition plates, all the fluid channels are communicated in a set mode, and at least two sets of heat exchange channels isolated from each other are formed; after the multiple heat exchange partition plates are sequentially arranged in a stacked mode, the first areas of the multiple heat exchange partition plates are stacked and attached, the first areas of every two adjacent heat exchange partition plates are stacked and attached and are integrally welded and sealed in the circumferential direction, and the heat exchange partition plates are connected into a whole. The heat exchanger manufacturing method can improve the stability of the heat exchanger.

Description

Technical Field

[0001] The invention relates to the field of heat exchangers, and in particular to a heat exchanger manufacturing method, a heat exchanger and a water supply device. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. At present, heat exchangers in related technologies are fixedly connected by electric welding during manufacturing. However, due to the high internal temperature of the heat exchanger during use, deformation is likely to occur inside the heat exchanger, which may cause cracks in the heat exchanger and cause water leakage in the heat exchanger. Summary of the invention

[0003] In view of this, the present invention provides a heat exchanger manufacturing method, a heat exchanger and a water supply device. The heat exchanger manufacturing method can improve the stability of the heat exchanger.

[0004] The present invention provides the following technical solutions:

[0005] A method for manufacturing a heat exchanger, used for manufacturing a heat exchanger, comprising:

[0006] forming a plurality of heat exchange baffles so that each of the heat exchange baffles has a first region and a second region;

[0007] The heat exchange baffles are stacked in sequence, so that two adjacent heat exchange baffles form fluid channels, and the fluid channels are connected in a set manner to form at least two groups of heat exchange channels isolated from each other;

[0008] After the plurality of heat exchange baffles are stacked in sequence, the first regions of the plurality of heat exchange baffles are stacked and bonded together, and the first regions of two adjacent heat exchange baffles are stacked and bonded together and welded and sealed integrally along the circumferential direction, so that the heat exchange baffles are connected as a whole.

[0009] Furthermore, the heat exchange baffle forms a first protrusion and a second protrusion in the first area after stamping; wherein, the first protrusion and the second protrusion are in opposite directions, and when the baffles are stacked in sequence, the first protrusion and the second protrusion of two adjacent baffles form a guide structure.

[0010] Furthermore, after stamping, a plurality of through holes located in the first sub-region and the second sub-region are formed on the heat exchange baffle, and the plurality of through holes all penetrate the heat exchange baffle, and the plurality of through holes form at least two groups of water supply channels after stacking, and the heat exchange channels include medium channels and water exchange water channels;

[0011] Wherein, the medium channel is communicated with one of the water supply channels, and the water exchange water channel is communicated with the other water supply channel.

[0012] Furthermore, each of the heat exchange baffles is provided with a bending portion bent in the same direction around the through hole; wherein two adjacent bending portions of the first sub-region and the second sub-region are alternately welded to form a water exchange water channel or a medium channel.

[0013] Furthermore, each of the heat exchange baffles is provided with a longer bend portion, and the longer bend portions on two adjacent heat exchange baffles are alternately arranged in the first sub-region and the second sub-region, and the longer bend portion covers the shorter bend portion on the adjacent heat exchange baffle to isolate the fluid channel from the medium channel or the hot water exchange channel.

[0014] Furthermore, among the bending portions of two adjacent heat exchange baffles, the length of one bending portion is greater than the length of the other bending portion, and the bending portion with the longer length is bent so as to cover the bending portion with the shorter length.

[0015] Furthermore, the welding is laser welding, electron beam welding or brazing.

[0016] The present invention also provides a heat exchanger, including the heat exchanger manufacturing method.

[0017] Furthermore, the heat exchanger further comprises: a shell;

[0018] The shell is sleeved on the outside of the heat exchange baffle, and the shell is provided with a first water inlet, a second water inlet, a first water outlet, and a second water outlet;

[0019] Wherein, the first water inlet and the first water outlet are connected to a group of water supply channels, and the second water inlet and the second water outlet are connected to another group of water supply channels.

[0020] Furthermore, the heat exchange baffle includes: a plate surface and an outer edge, the outer edge is connected to the periphery of the plate surface, and the plate surfaces of adjacent heat exchange baffles are spaced apart to form a water flow channel or a medium channel; the outer edges of multiple heat exchange baffles are stacked.

[0021] The present invention also provides a water supply device, comprising the heat exchanger.

[0022] The heat exchanger is provided with a plurality of heat exchange baffles. When the plurality of heat exchange baffles are connected together, a fluid channel can be formed between two adjacent heat exchange baffles. The fluid channel can allow fluid to pass through. The fluid can be a heat exchange medium or a heat exchange fluid. Specifically, when the fluid channels are connected in a set manner, mutually isolated heat exchange channels can be formed in the heat exchanger. The isolated heat exchange channels can prevent the mixing of the heat exchange medium and the heat exchange fluid, thereby enhancing the reliability of the heat exchanger. The heat exchange channel is used to achieve heat exchange. Specifically, the heat exchange channel includes at least one heat exchange medium water channel and one heat exchange fluid water channel, thereby achieving heat exchange of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A process flow diagram of a manufacturing method provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a heat exchange baffle provided in an embodiment of the present invention;

[0026] Figure 3 A cross-sectional view of a heat exchanger provided in an embodiment of the present invention;

[0027] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0028] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0029] Figure 6 A schematic diagram of the structure of a heat exchanger provided in an embodiment of the present invention;

[0030] Figure 7 A schematic structural diagram of a water supply device provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 100-manufacturing method; 10-heat exchange baffle; 11-first area; 111-first sub-area; 112-second sub-area; 12-second area; 13-fluid channel; 14-through hole; 15-bending portion; 16-plate surface; 17-outer edge; 20-flow guiding structure; 21-first protrusion; 22-second protrusion; 30-water supply channel; 40-heat exchange channel; 41-medium channel; 42-heat exchange water channel; 200-heat exchanger; 210-shell; 211-first water inlet; 212-second water inlet; 213-first water outlet; 214-second water outlet; 300-water supply device. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0035] References to "embodiments" or "implementations" herein mean that a particular feature, structure, or characteristic described in conjunction with the embodiments or implementations may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. At present, heat exchangers in related technologies are fixedly connected by electric welding during manufacturing. However, due to the high internal temperature of the heat exchanger during use, deformation is likely to occur inside the heat exchanger, which may cause cracks in the heat exchanger and cause water leakage in the heat exchanger.

[0037] In view of this, the present embodiment provides a heat exchanger manufacturing method, a heat exchanger and a water supply device. The heat exchanger manufacturing method can improve the stability of the heat exchanger.

[0038] See also Figures 1 to 4 , a heat exchanger manufacturing method 100, used to manufacture a heat exchanger 200, comprising:

[0039] Forming a plurality of heat exchange baffles 10 so that each of the heat exchange baffles 10 has a first region 11 and a second region 12;

[0040] The heat exchange baffles 10 are stacked in sequence, so that two adjacent heat exchange baffles 10 form fluid channels 13, and the fluid channels 13 are connected in a set manner to form at least two groups of heat exchange channels 40 isolated from each other;

[0041] After the plurality of heat exchange baffles 10 are stacked in sequence, the first regions 11 of the plurality of heat exchange baffles 10 are stacked and bonded together, and the first regions 11 of two adjacent heat exchange baffles 10 are stacked and bonded together and welded and sealed integrally along the circumferential direction, so that the heat exchange baffles 10 are connected as a whole.

[0042] It can be understood that after a plurality of heat exchange baffles 10 are connected together, a fluid channel 13 can be formed between two adjacent heat exchange baffles 10, and the fluid channel 13 can allow fluid to pass through, and the fluid can be a heat exchange medium or a heat exchange fluid. Specifically, when the fluid channels 13 are connected in a set manner, mutually isolated heat exchange channels 40 can be formed in the heat exchanger 200, and the isolated heat exchange channels 40 can prevent the mixing of the heat exchange medium and the heat exchange fluid, thereby enhancing the reliability of the heat exchanger 200. The heat exchange channel 40 is used to achieve heat exchange, and specifically, the heat exchange channel 40 includes at least one heat exchange medium water channel and one heat exchange fluid water channel, so that the heat exchange of the heat exchanger 200 can be achieved.

[0043] It can be understood that when the heat exchange baffle 10 is formed, the heat exchange baffle 10 can be formed into the first area 11 and the second area 12 by stamping. The sizes of the multiple heat exchange baffles 10 are different, and the sizes of the heat exchange baffles 10 are successively increased or decreased, so that the multiple heat exchange baffles 10 can be matched together to form the heat exchanger 200. Specifically, in this embodiment, the size of the heat exchange baffle 10 is a relationship of increasing from top to bottom. Of course, in some other embodiments, the size of the heat exchange baffle 10 can also be a relationship of decreasing from top to bottom.

[0044] The heat exchange baffle 10 is in the shape of a thin shell with an opening at the bottom as a whole. The first area 11 is located at the outer edge of the heat exchange baffle 10 to form an outer convex edge structure, and each first area 11 (outer convex edge) fits together. The cross section of the heat exchange baffle 10 can be roughly isosceles trapezoidal (open at the bottom and with an outer convex edge on the outside). The height of each heat exchange baffle 10 decreases from top to bottom along the height of the heat exchanger, so that adjacent heat exchange baffles 10 form a heat exchange channel 40. The length and width of the heat exchange baffle 10 can be the same, that is, each heat exchange baffle 10 (outer edge) is flush in the circumferential direction. After each heat exchange baffle 10 is stacked, laser welding can be used to weld the outer periphery of the heat exchange baffle 10 so that the outer edge of each heat exchange baffle 10 is melted and a sealed connection is formed.

[0045] In some embodiments, it can be understood that the heat exchange baffle 10 includes: a panel, an outer edge 17, and a bevel portion, the outer edge 17 is connected to the outer periphery of the second area 12, the bevel portion is connected between the outer edge 17 and the panel, the first side of the bevel portion is integrally or fixedly connected to the outer edge 17, and the second side of the bevel portion extends obliquely away from the outer edge 17; the panel spacing of adjacent heat exchange baffles 10 is set.

[0046] In some embodiments, in order to facilitate welding of the first region 11, a chamfer is provided between the first region 11 and the second region 12, the first side of the chamfer is connected to the first region 11, the second side is connected to the second region 12, and the chamfer extends obliquely from the first side to the second side to form a guiding structure, so that when the heat exchanger 200 is subjected to external vibration, the water flow or heat exchange medium in the channel flows to the first region 11, affecting the sealing of the weld. The first region 11 and the second region 12 are arranged at the same height and connected as a whole through the chamfer.

[0047] See also Figures 2 to 4 In some embodiments, the heat exchange baffle 10 forms a first protrusion 21 and a second protrusion 22 in the first area 11 after stamping, wherein the first protrusion 21 and the second protrusion 22 are in opposite directions. When the baffles are stacked in sequence, the first protrusion 21 and the second protrusion 22 of two adjacent heat exchange baffles 10 form a guide structure 20.

[0048] It can be understood that after stamping, the heat exchange baffle 10 forms a first protrusion 21 and a second protrusion 22 in the first area 11, wherein the first protrusion 21 and the second protrusion 22 protrude toward two sides of the heat exchange baffle 10 respectively, so that the heat exchange baffle 10 forms a wavy undulating structure (such as Figure 5As shown); the first protrusion 21 and the second protrusion 22 can increase the surface area of ​​the heat exchange baffle 10, thereby providing more heat transfer surfaces, which can improve the heat transfer efficiency of the heat exchanger 200; at the same time, the first protrusion 21 and the second protrusion 22 can also increase the resistance of the heat exchange medium and / or the heat exchange fluid to flow in the flow channel, which can extend the heat exchange time, thereby improving the heat exchange efficiency.

[0049] It can be understood that the first protrusion 21 and the second protrusion 22 have the same shape and are both arranged in a "V" shape, so that after the fluid channels 13 are stacked, the shapes in each fluid channel 13 are the same to ensure uniform heat exchange. In some embodiments, the flow directions of the heat exchange medium and the heat exchange fluid can be opposite, so that the heat exchange fluid and the heat exchange medium form a counterflow, which can extend the heating time.

[0050] See also Figures 2 to 4 In some embodiments, after stamping, the heat exchange baffle 10 forms a plurality of through holes 14 located in the first sub-region 111 and the second sub-region 112 on the heat exchange baffle 10, and the plurality of through holes 14 all penetrate the heat exchange baffle 10. After stacking, the plurality of through holes 14 form at least two groups of water supply channels 30, and the heat exchange channel 40 includes a medium channel 41 and a water exchange water channel 42;

[0051] The medium channel 41 is communicated with one of the water supply channels 30 , and the water exchange water channel 42 is communicated with the other water supply channel 30 .

[0052] It can be understood that after stamping, the heat exchange baffle 10 forms a plurality of through holes 14 located in the first sub-region 111 and the second sub-region 112 on the heat exchange baffle 10, and the plurality of through holes 14 form at least two groups of water supply channels 30 after stacking a plurality of heat exchange baffles 10, wherein one group of water supply channels 30 is used to supply water to the medium channel 41, and the other group of water supply channels 30 is used to supply water to the heat exchange water channel 42. Specifically, one group of water supply channels 30 includes heat exchange inlet and heat exchange outlet, and the other group of water supply channels 30 includes fluid inlet and fluid outlet.

[0053] It can be understood that the heat exchange inlet water and the heat exchange outlet water are both connected to the medium channel 41, so that the heat exchange medium can enter the medium channel 41 through the heat exchange inlet water, and after passing through the medium channel 41 and exchanging heat with the water flow in the water exchange water channel 42, it is discharged through the heat exchange outlet water, so that heat exchange can be achieved.

[0054] At the same time, the fluid inlet and the fluid outlet are both connected to the heat exchange water channel 42, so that the heat exchange fluid can enter the heat exchange water channel 42 through the fluid inlet, and after heat exchange in the heat exchange water channel 42, it is discharged through the fluid outlet, so that the heat exchange fluid can achieve heat exchange.

[0055] See also Figure 4 In some embodiments, each of the heat exchange baffles 10 is provided with a bending portion 15 bent in the same direction around the through hole 14; wherein, two adjacent bending portions 15 of the first sub-region 111 and the second sub-region 112 are alternately welded to form a heat exchange water channel 42 or a medium channel 41.

[0056] It can be understood that after the above-mentioned heat exchange baffle 10 is stamped, the inner periphery of the through hole 14 on each heat exchange baffle 10 forms a downwardly extending bent portion 15, wherein the two adjacent bent portions 15 in the first sub-area 111 are welded alternately, and the two adjacent bent portions 15 in the second sub-area 112 are welded alternately, that is, along the direction from top to bottom, the welding method of the bent portions 15 is one left and one right, so that the adjacent fluid channels or medium channels 41 can only be filled with water alternately at intervals when filling with water, so that interlayer water inflow can be formed, and the interlayer water inflow can make the medium channels on both sides exchange heat with the fluid channels in the interlayer at the same time, so that the heat exchange efficiency can be improved, and at the same time, the sealing of the medium channel 41 and the water exchange water channel 42 can also be improved to avoid the phenomenon of mixed flow and cause the heat exchange medium to contaminate the heat exchange fluid.

[0057] See also Figure 4 In some embodiments, each of the heat exchange baffles 10 is provided with a longer bending portion 15, and the longer bending portions 15 on two adjacent heat exchange baffles 10 are alternately arranged in the first sub-region 111 and the second sub-region 112, and the longer bending portion 15 covers the shorter bending portion 15 on the adjacent heat exchange baffle 10 to isolate the fluid channel 13 from the medium channel 41 or the water exchange water channel 42.

[0058] It can be understood that a bending portion 15 is provided on each of the two adjacent heat exchange baffles 10, and the bending portion 15 is arranged in a manner of alternating between the first sub-region 111 and the second sub-region 112. For example, the first bending portion 15 with a longer length is arranged in the first sub-region 111, and the second bending portion 15 with a longer length needs to be arranged in the second sub-region 112, so that the bending portion 15 with a longer length can be arranged at intervals between the first sub-region 111 and the second sub-region 112. Therefore, when the bending portion 15 with a longer length covers the bending portion 15 with a shorter length, the bending portion 15 in the first sub-region 111 can be arranged at intervals between the first sub-region 111 and the second sub-region 112. The heat exchange baffle 10 forms an interval of fluid channels 13, and the fluid channels 13 in the second sub-area 112 are the same. The hot water channel 42 is located in the first sub-area 111, and the medium channel 41 is located in the second sub-area 112. In this way, the water flow in the hot water channel 42 can alternately enter the fluid channel 13 with the water flow in the medium channel 41, so that the heat exchanger 200 can isolate the heat exchange medium and the heat exchange fluid during heat exchange; and the coating structure can also reduce the resistance of the heat exchange medium or heat exchange fluid flowing in the channel, thereby improving the smoothness of the fluid flow in the medium channel 41 and the hot water channel 42.

[0059] In some embodiments, the welding is laser welding or electron beam welding or brazing.

[0060] It is understandable that laser welding, electron beam welding or brazing can make the welding of the first region 11 and the bending portion 15 more precise, thus avoiding heat generated during the welding process that affects the accuracy of the welding.

[0061] See also Figure 6 The present invention also provides a heat exchanger 200, including the heat exchanger manufacturing method 100.

[0062] It can be understood that the heat exchanger 200 provided in the present invention is manufactured by the above method. Therefore, the heat exchanger 200 is formed by forming the heat exchange baffle 10, and the heat exchange baffle 10 forms a first area 11 and a second area 12 after forming, wherein the second area 12 is recessed in the first area 11, the first area 11 is the edge area of ​​the heat exchange baffle 10, and the second area 12 is the recessed area of ​​the heat exchange baffle 10. When the heat exchange baffles 10 are stacked, the first area 11 and the second area 12 of each heat exchange baffle 10 are also stacked. In this way, the first areas 11 of two adjacent heat exchange baffles 10 can be welded, and then a plurality of heat exchange baffles 10 can be connected together, so that the plurality of heat exchange baffles 10 form a heat exchanger 200; in this way, the heat exchanger 200 can form a complete welding sealing structure, and the reliability and consistency of the heat exchanger 200 can be improved by welding, thereby reducing the possibility of water leakage in the heat exchanger 200, so as to achieve the purpose of prolonging the service life of the heat exchanger 200.

[0063] See also Figure 6 , in some embodiments, the heat exchanger 200 further includes: a shell 210;

[0064] The shell 210 is sleeved on the outside of the heat exchange baffle 10, and the shell 210 is provided with a first water inlet 211, a second water inlet 212, a first water outlet 213, and a second water outlet 214;

[0065] The first water inlet 211 and the first water outlet 213 are connected to one group of water supply channels 30 , and the second water inlet 212 and the second water outlet 214 are connected to another group of water supply channels 30 .

[0066] It can be understood that the above-mentioned heat exchanger 200 also includes a shell 210, which is sleeved on the outside of the heat exchanger 200, and is provided with a first water inlet 211, a second water inlet 212, a first water outlet 213, and a second water outlet 214; the first water inlet 211 and the first water outlet 213 are connected to one group of water supply channels 30 (here, the water supply channel 30 connected to the fluid is taken as an example), and the heat exchange fluid enters the fluid inlet through the first water inlet 211, and then flows into the water supply channel 30, flows to the fluid outlet after heat exchange through the water exchange water channel 42, and then is discharged through the first water outlet 213.

[0067] The second water inlet 212 and the second water outlet 214 are connected to another set of water supply channels 30 (here, the water supply channel 30 connected to the heat exchange medium is taken as an example), and the heat exchange medium enters the heat exchange water inlet through the second water inlet 212, and then flows into the water supply channel 30, flows to the heat exchange water outlet after heat exchange through the medium channel 41, and then is discharged through the second water outlet 214. In this way, heat exchange can be achieved through two independent channels, thereby improving the applicability and flexibility of the heat exchanger 200.

[0068] See also Figure 2 and Figure 6 In some embodiments, the heat exchange baffle 10 includes: a plate surface 16 and an outer edge 17, wherein the outer edge 17 is connected to the periphery of the plate surface, and the plate surfaces of adjacent heat exchange baffles 10 are spaced apart to form a water flow channel or a medium channel 41; the outer edges 17 of multiple heat exchange baffles 10 are stacked.

[0069] The manufacturing method 100 is formed by forming a heat exchange baffle 10, and the heat exchange baffle 10 forms a first area 11 and a second area 12 after forming, wherein the second area 12 is recessed in the first area 11, and the first area 11 is the edge area of ​​the heat exchange baffle 10, and the second area 12 is the recessed area of ​​the heat exchange baffle 10. When the baffles are stacked, the first area 11 and the second area 12 of each baffle are also stacked, so that the first areas 11 of two adjacent heat exchange baffles 10 can be welded, and then a plurality of heat exchange baffles 10 can be connected together, so that the plurality of heat exchange baffles 10 form a heat exchanger 200; in this way, the heat exchanger 200 can form a complete welding sealing structure, and the reliability and consistency of the heat exchanger 200 can be improved by welding, thereby reducing the possibility of water leakage in the heat exchanger 200, so as to achieve the purpose of increasing the service life of the heat exchanger 200.

[0070] See also Figure 7 The present invention also provides a water supply device 300, including the heat exchanger 200.

[0071] It can be understood that the embodiment of the present invention also provides a water supply device 300, which includes a heat exchanger 200 and a hot tank. The interior of the heat exchanger 200 is provided with water flow channels and medium channels 41 isolated from each other, and the hot tank and the medium channel 41 are connected; the heat exchanger 200 includes a plurality of heat exchange baffles 10, and the plurality of heat exchange baffles 10 are stacked in sequence, and water flow channels or medium channels 41 are formed between adjacent heat exchange baffles 10, and the outer edges 17 of the plurality of heat exchange baffles 10 are stacked and welded. Compared with the prior art, the heat exchanger 200 of the present invention adopts a structure of multiple heat exchange baffles 10, and a water flow channel or a medium channel 41 is formed between two adjacent heat exchange baffles 10. The cross-sectional area of ​​the water flow channel and the medium channel 41 formed in this way is larger, and the water flow channel and the medium channel 41 are stacked, thereby increasing the contact area of ​​the water flow channel and the medium channel 41, thereby increasing the heat conduction area of ​​the medium channel 41 and the water flow channel. At the same time, multiple heat exchange baffles 10 are arranged in sequence along the height direction, so the length of the water flow channel and the medium channel 41 along the height direction is smaller, so that the flow rate per unit area of ​​the longitudinal cross-section of the water flow inside the water flow channel is smaller, thereby allowing the water flow to quickly absorb the heat of the heat exchange medium, thereby improving the efficiency of heat exchange. The water supply device 300 using this heat exchanger 200 has a shorter heating time, accelerates the speed of the water supply device 300 to output hot water, and improves the user's water experience.

[0072] Mentioning "embodiment" and "implementation method" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrases in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention can be combined with other embodiments. In addition, it should be understood that the features, structures or characteristics described in the various embodiments of the present invention can be arbitrarily combined to form another embodiment without departing from the spirit and scope of the technical solution of the present invention, provided that there is no contradiction between them.

[0073] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above preferred implementation modes, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for manufacturing a heat exchanger, characterized in that: Used to manufacture heat exchangers, including: forming a plurality of heat exchange baffles so that each of the heat exchange baffles has a first region and a second region; The heat exchange baffles are stacked in sequence, so that two adjacent heat exchange baffles form fluid channels, and the fluid channels are connected in a set manner to form at least two groups of heat exchange channels isolated from each other; After the plurality of heat exchange baffles are stacked in sequence, the first regions of the plurality of heat exchange baffles are stacked and bonded together, and the first regions of two adjacent heat exchange baffles are stacked and bonded together and welded and sealed integrally along the circumferential direction, so that the heat exchange baffles are connected as a whole.

2. The method for manufacturing a heat exchanger according to claim 1, characterized in that: The heat exchange baffle forms a first protrusion and a second protrusion in the first area after stamping; wherein the first protrusion and the second protrusion are in opposite directions, and when the baffles are stacked in sequence, the first protrusions and the second protrusions of two adjacent baffles form a guide structure.

3. The method for manufacturing a heat exchanger according to claim 2, characterized in that: After the heat exchange baffle is stamped, a plurality of through holes are formed on the heat exchange baffle in the first sub-region and the second sub-region, the plurality of through holes all penetrate the heat exchange baffle, and the plurality of through holes form at least two groups of water supply channels after being stacked, and the heat exchange channels include medium channels and water exchange water channels; Wherein, the medium channel is communicated with one of the water supply channels, and the water exchange water channel is communicated with the other water supply channel.

4. The method for manufacturing a heat exchanger according to claim 3, characterized in that: Each of the heat exchange baffles is provided with a bending portion bent in the same direction around the through hole; wherein two adjacent bending portions of the first sub-region and the second sub-region are alternately welded to form a water exchange water channel or a medium channel.

5. The method for manufacturing a heat exchanger according to claim 4, characterized in that: A longer bend portion is provided on each of the heat exchange baffles, and the longer bend portions on two adjacent heat exchange baffles are alternately arranged in the first sub-region and the second sub-region, and the longer bend portion covers the shorter bend portion on the adjacent heat exchange baffle to isolate the fluid channel from the medium channel or the water exchange water channel.

6. The method for manufacturing a heat exchanger according to claim 5, characterized in that: The welding is laser welding, electron beam welding or brazing.

7. A heat exchanger, characterized in that: The heat exchanger is manufactured by the heat exchanger manufacturing method according to any one of claims 1 to 6.

8. The heat exchanger according to claim 7, characterized in that The heat exchanger further includes: a shell; The shell is sleeved on the outside of the heat exchange baffle, and the shell is provided with a first water inlet, a second water inlet, a first water outlet, and a second water outlet; Wherein, the first water inlet and the first water outlet are connected to a group of water supply channels, and the second water inlet and the second water outlet are connected to another group of water supply channels.

9. The heat exchanger according to claim 8, characterized in that The heat exchange baffle comprises: a plate surface and an outer edge, wherein the outer edge is connected to the periphery of the plate surface, and the plate surfaces of adjacent heat exchange baffles are spaced apart to form a water flow channel or a medium channel; the outer edges of a plurality of heat exchange baffles are stacked.

10. A water supply device, characterized in that: A heat exchanger comprising any one of claims 7 to 9.

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