Heat exchanger and water supply device

Abstract

The utility model discloses a heat exchanger and a water supply device, the heat exchanger comprises a plurality of heat exchange clapboards, the plurality of heat exchange clapboards are sequentially arranged along a first direction, a water flow channel or a heat exchange medium channel is formed between the adjacent heat exchange clapboards, and the outer edges of the plurality of heat exchange clapboards are overlapped and welded. Compared with the prior art, the heat exchanger adopts the structure of the multiple heat exchange partition plates, the water flow channels or the heat exchange medium channels are formed between every two adjacent heat exchange partition plates, in this way, the cross section areas of the formed water flow channels and the heat exchange medium channels are large, and the water flow channels and the heat exchange medium channels are stacked; due to the fact that the multiple heat exchange partition plates are sequentially arranged in the height direction, the lengths of the water flow channels and the heat exchange medium channels in the height direction are small, water flow can quickly absorb heat of heat exchange media, and the heat exchange efficiency of the heat exchange media is improved. And the heat exchange efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water supply device technical field, especially a kind of heat exchanger and water supply device. BACKGROUND

[0002] Water heater, also known as water heater, is a kind of household or commercial electric appliance for heating water. The heat exchanger (also known as heat exchanger) in water heater is a key component, and its main function is to efficiently transfer heat and transfer the heat of one medium to another medium. The heat exchange efficiency of the heat exchanger in the prior art is low, and the water flow takes a long time to heat to the specified temperature in the heat exchanger, which cannot achieve the effect of instant hot water, affecting the user experience. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a kind of heat exchanger and water supply device, which can improve the heat exchange efficiency of heat exchanger and achieve the effect of instant hot water.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A heat exchanger, the inside of the heat exchanger is provided with water flow channel and heat exchange medium channel isolated from each other, the heat exchanger includes a plurality of heat exchange partitions, a plurality of the heat exchange partitions are arranged in sequence along the first direction, the water flow channel or heat exchange medium channel is formed between adjacent heat exchange partitions, and the outer edges of a plurality of heat exchange partitions are stacked and welded.

[0006] As one of the embodiments, along the first direction, the water flow channel and the heat exchange medium channel are arranged alternately.

[0007] As one of the embodiments, the heat exchange partition includes a panel and an outer edge, the outer edge is connected to the outer periphery of the panel, and the panels of adjacent heat exchange partitions are spaced apart to form the water flow channel or the heat exchange medium channel; the outer edges of a plurality of heat exchange partitions are stacked and welded together.

[0008] As one of the embodiments, the heat exchange partition includes a bevel portion, the bevel portion is connected between the outer edge and the panel, the first side of the bevel portion is integrally or fixedly connected to the outer edge, and the second side of the bevel portion extends obliquely away from the outer edge; the panels of adjacent heat exchange partitions are spaced apart.

[0009] As one of the embodiments, the second side of a plurality of bevel portions is integrally welded; or, the second side of each bevel portion integrally extends a welded edge, each welded edge is stacked, and the outer edges of a plurality of welded edges are integrally welded by the same weld.

[0010] As one of the implementation, two adjacent heat exchange partitions are formed with flow channels, along the first direction, a plurality of heat exchange partitions are formed with a plurality of flow channels, a plurality of flow channels are sequentially divided into odd layer flow channels and even layer flow channels along the first direction, a plurality of odd layer flow channels are communicated with each other, a plurality of even layer flow channels are communicated with each other, the odd layer flow channels and the even layer flow channels are isolated from each other;The odd layer flow channel is one of the water flow channel and the heat exchange medium channel, and the even layer flow channel is the other one of the water flow channel and the heat exchange medium channel.

[0011] As one of the implementation, the heat exchanger is provided with a first flow guide channel and a second flow guide channel penetrating each flow channel, and the heat exchanger comprises a sealing part, the sealing part is used for sealing all the odd layer flow channels in the first flow guide channel, and the sealing part is used for sealing all the even layer flow channels in the second flow guide channel.

[0012] As one of the implementation, the sealing part is welded or bonded or integrally formed with the heat exchange partition.

[0013] As one of the implementation, the heat exchange partition is provided with a plurality of protrusions along the length direction thereof, the protrusions are arrow-shaped, the protrusions comprise first ribs and second ribs, one end of the first rib and one end of the second rib are connected to form an arrowhead, the other end of the first rib and the other end of the second rib are separated from each other to form an arrow tail;The arrowheads of the protrusions on two adjacent heat exchange partitions are opposite to each other.

[0014] The utility model adopts the following technical scheme: a water supply device, including heat exchanger and hot jar in any one embodiment above, the hot jar with the heat exchange medium channel intercommunication.

[0015] The utility model discloses a beneficial effect lies in: the present application provides a heat exchanger and water supply device, and water supply device includes heat exchanger and hot jar, and the inside of heat exchanger is provided with mutually isolated water flow channel and heat exchange medium channel, and hot jar and heat exchange medium channel are communicated, and heat exchanger includes multiple heat exchange baffle, and multiple heat exchange baffles are sequentially arranged along the first direction, and water flow channel or heat exchange medium channel is formed between adjacent heat exchange baffles, and the outer edge of multiple heat exchange baffles is stacked and welded. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure schematic diagram of a heat exchanger of the utility model is shown.

[0017] Figure 2 The sectional view schematic diagram of a heat exchanger A-A of the utility model is shown.

[0018] Figure 3 The sectional view schematic diagram of a heat exchanger B-B of the utility model is shown. Figure 2 The enlarged schematic diagram of A in the middle is shown.

[0019] Figure 4 The sectional view schematic diagram of a heat exchanger B-B of the utility model is shown.

[0020] Sign: 1, heat exchange baffle;2, sealing portion;3, protruding;11, water flow channel;12, heat exchange medium channel;13, panel;14, outer edge;15, inclined surface portion;16, flow channel;17, first flow guide channel;18, second flow guide channel;31, first rib;32, second rib;161, odd layer flow channel;162, even layer flow channel. DETAILED DESCRIPTION

[0021] In the utility model, the terms "arrange", "have", "connect" should be understood in a broad sense. For example, it can be fixed connection, detachable connection, or integral structure, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, or internal communication between two devices, elements or components. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0024] Also, in addition to being used to indicate orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For ordinary skilled in the art, the specific meaning of these terms in the utility model can be understood according to the specific circumstances.

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0026] Referring to Figure 1 The utility model embodiment provides a kind of water supply device, including heat exchanger and hot tank, the inside of heat exchanger is provided with mutually isolated water flow passage 11 and heat exchange medium passage 12, hot tank and heat exchange medium passage 12 are communicated.

[0027] In practical application, the heat tank is used to contain heat exchange medium, the heat tank is connected with heat exchange power component for making heat exchange medium flow through heat exchange medium channel 12, the heat exchange power component drives hot water of the heat tank to flow to heat exchange medium channel 12, when the hot water (heat exchange medium) flows in heat exchange medium channel 12, the hot water (heat exchange medium) exchanges heat with water in water flow channel 11, so as to heat water in water flow channel 11, after the temperature of the hot water (heat exchange medium) is reduced, the hot water (heat exchange medium) is heated again through heat exchange medium channel 12 to return to the heat tank, so that the hot water (heat exchange medium) circulates between the heat tank and heat exchange medium channel 12, ensuring that the hot water (heat exchange medium) in heat exchange medium channel 12 always maintains a high temperature. After the water in water flow channel 11 is heated once by the hot water (heat exchange medium) in heat exchange medium channel 12, the subsequent heating of the water when it is discharged requires a shorter time (or smaller power) to reach the set temperature when the heater heats the water flow for the second time, therefore, the user can discharge hot water at the set temperature by opening the faucet, achieving the effect of instant hot water.

[0028] Referring to Figure 1 and Figure 2 , the heat exchanger includes a plurality of heat exchange partitions 1, the plurality of heat exchange partitions 1 are arranged in sequence along a first direction, water flow channels 11 or heat exchange medium channels 12 are formed between adjacent heat exchange partitions 1, and the outer edges 14 of the plurality of heat exchange partitions 1 are stacked and welded.

[0029] In practical application, the heat exchanger itself defines a height direction, the height direction is set as the first direction, the plurality of heat exchange partitions 1 are arranged in sequence along the first direction, the outer edges 14 of the plurality of heat exchange partitions 1 are stacked together and sealed and connected by welding technology, water flow channels 11 or heat exchange medium channels 12 are formed between adjacent two heat exchange partitions 1, the plurality of water flow channels 11 are communicated with each other, the plurality of heat exchange medium channels 12 are communicated with each other, and the plurality of water flow channels 11 and the plurality of heat exchange medium channels 12 are isolated from each other.

[0030] Compared with the prior art, the heat exchanger of the present application adopts the structure of a plurality of heat exchange partitions 1, water flow channels 11 or heat exchange medium channels 12 are formed between adjacent two heat exchange partitions 1, the cross-sectional area of the water flow channels 11 and the heat exchange medium channels 12 formed in this way is large, and the water flow channels 11 and the heat exchange medium channels 12 are in a stacked manner, thus increasing the contact area of the water flow channels 11 and the heat exchange medium channels 12, and further increasing the heat conduction area of the heat exchange medium channels 12 and the water flow channels 11, and at the same time, the plurality of heat exchange partitions 1 are arranged in sequence along the height direction, so that the length of the water flow channels 11 and the heat exchange medium channels 12 along the height direction is small, so that the flow per unit area of the water flow in the water flow channels 11 is small, and thus the water flow can quickly absorb the heat of the heat exchange medium, improving the efficiency of heat exchange.

[0031] Referring again to Figure 2, the water flow channel 11 and the heat exchange medium channel 12 are arranged alternately in sequence along the first direction. In this way, along the first direction, the water flow channel 11 is provided with the heat exchange medium channel 12 on both sides, and the heat exchange medium channels 12 on both sides heat the water flow in the water flow channel 11 at the same time, greatly improving the efficiency of water flow heating, so that the water flow can reach the specified temperature faster, saving heating time.

[0032] Referring again to Figure 2 and Figure 3 , the heat exchange partition plate 1 further comprises a panel 13 and an outer edge 14, the outer edge 14 is connected to the outer periphery of the panel 13, and the panels 13 of adjacent heat exchange partition plates 1 are arranged at intervals to form the water flow channel 11 or the heat exchange medium channel 12; the outer edges 14 of a plurality of heat exchange partition plates 1 are stacked and welded together.

[0033] In actual application, the heat exchange partition plate 1 is composed of the panel 13 and the outer edge 14, the panels 13 of a plurality of heat exchange partition plates 1 are arranged at intervals along the first direction to form channels for water flow or heat exchange medium to pass through, and the outer periphery of the panel 13 is connected with the outer edge 14. The outer edges 14 of a plurality of heat exchange partition plates 1 are connected together by welding, and the outer edges 14 welded together can isolate the channels from the outside to prevent water flow or heat exchange medium in the channels from penetrating to the outside. The welding can provide very high connection strength, so that the heat exchanger can maintain the integrity and stability of the structure in a high temperature environment; at the same time, the welding can achieve almost seamless connection, greatly reducing the risk of leakage; good sealing performance can prevent cross contamination between water flow and heat exchange medium, ensuring safe operation of the system.

[0034] Referring again to Figure 3 , the heat exchange partition plate 1 comprises a bevel portion 15, the bevel portion 15 is connected between the outer edge 14 and the panel 13, the first side of the bevel portion 15 is integrally or fixedly connected to the outer edge 14, and the second side of the bevel portion 15 extends obliquely away from the outer edge 14; the panels 13 of adjacent heat exchange partition plates 1 are arranged at intervals.

[0035] In actual application, in order to facilitate the welding connection of the outer edge 14, the heat exchange partition plate 1 is provided with the bevel portion 15 between the outer edge 14 and the panel 13, the first side of the bevel portion 15 is connected to the outer edge 14, and the second side of the bevel portion 15 is connected to the panel 13. The bevel portion 15 extends obliquely from the first side to the second side, forming a guiding structure. On the one hand, the bevel portion 15 separates the panel 13 and the outer edge 14, avoiding the influence of high temperature welding on the structural strength of the panel 13 when the outer edge 14 is welded. On the other hand, the bevel portion 15 has a guiding effect, avoiding the water flow or heat exchange medium in the channel flowing to the outer edge 14 when the water supply device is subjected to external vibration, affecting the sealing performance of the weld.

[0036] Referring again to Figure 3The second sides of the plurality of inclined surface portions 15 are integrally welded together, or the second sides of the inclined surface portions 15 integrally extend with welded edges, the welded edges are stacked, and the outer edges of the plurality of welded edges are integrally welded together by the same weld.

[0037] In actual application, the second sides of the plurality of inclined surface portions 15 can also be welded together, and the inclined surface portions 15 and the outer edge 14 are both welded, which further strengthens the sealing of the channel and prevents water from leaking out of the channel.

[0038] It should be noted that the second sides of the plurality of inclined surface portions 15 can also be spaced apart from each other, and the first sides of the plurality of inclined surface portions 15 are integrally welded together. In this way, the inclined surface portions 15 can be prevented from affecting the panel 13 during welding. The first sides of the inclined surface portions 15 are away from the panel 13, so welding the first sides can prevent the welding temperature from affecting the panel 13, and also achieve the above-mentioned similar effects.

[0039] Referring to Figure 4 The adjacent two heat exchange partitions 1 form a flow channel 16. Along the first direction, a plurality of heat exchange partitions 1 form a plurality of layers of flow channels 16. The plurality of layers of flow channels 16 are sequentially divided into odd layers of flow channels 161 and even layers of flow channels 162 along the first direction. The plurality of odd layers of flow channels 161 are in communication with each other, the plurality of even layers of flow channels 162 are in communication with each other, and the odd layers of flow channels 161 and the even layers of flow channels 162 are isolated from each other. The odd layers of flow channels 161 are one of the water flow channels 11 and the heat exchange medium channels 12, and the even layers of flow channels 162 are the other one of the water flow channels 11 and the heat exchange medium channels 12.

[0040] In actual application, a plurality of heat exchange partitions 1 form a plurality of layers of flow channels 16 along the first direction. The plurality of layers of flow channels 16 are further divided into odd layers of flow channels 161 and even layers of flow channels 162 along the first direction. The odd layers of flow channels 161 are, for example, the first layer, the third layer, and the like. The even layers of flow channels 162 are, for example, the second layer, the fourth layer, and the like. The odd layers of flow channels 161 can be the heat exchange medium channels 12, and the even layers of flow channels 162 can be the water flow channels 11. In this way, the opposite sides of each layer of water flow channels 11 are heated by the heat exchange medium channels 12 on both sides, effectively saving the heating time of the water flow in the water flow channels 11 and improving the hot water output speed of the water supply device.

[0041] Referring again to Figure 4 The heat exchanger is provided with a first flow guide channel 17 and a second flow guide channel 18 which penetrate each flow channel 16. The heat exchanger includes a sealing portion 2. The sealing portion 2 is used to seal all odd layers of flow channels 161 in the first flow guide channel 17. The sealing portion 2 is used to seal all even layers of flow channels 162 in the second flow guide channel 18.

[0042] In practical application, since the heat exchange medium is mainly used for heating the water flow, and the water flow needs to flow out of the water supply device for direct use by the user, in order to avoid the heat exchange medium and the water flow from mixing together and affecting the user's water safety, the heat exchange medium channel 12 and the water flow channel 11 need to be spaced apart from each other. In an embodiment, the heat exchanger is provided with a first flow guide channel 17 and a second flow guide channel 18 penetrating each heat exchange partition plate 1. If the first flow guide channel 17 is connected with an external water source (or water inlet pipeline), the first flow guide channel 17 is a channel for the water flow to enter, so the odd layer flow channels 161 in the first flow guide channel 17 all need to be sealed, allowing only the water flow to enter the even layer flow channels 162 from the first flow guide channel 17. If the second flow guide channel 18 is connected with the heat tank, the second flow guide channel 18 is a channel for the heat exchange medium to enter, so the even layer flow channels 162 in the second flow guide channel 18 all need to be sealed, allowing only the heat exchange medium to enter the odd layer flow channels 161 from the second flow guide channel 18.

[0043] In this way, the odd layer flow channels 161 and the even layer flow channels 162 can be isolated from each other, the water flow and the heat exchange medium do not affect each other, ensuring the safety of the user's drinking water (water use), and at the same time, the structure of the heat exchanger is simpler, reducing the production difficulty of the heat exchanger and improving the production efficiency.

[0044] In an embodiment, the sealing part 2 can be welded with the heat exchange partition plate 1, which can provide very high connection strength, so that the sealing part 2 can maintain the sealing property of the structure in the high-temperature environment of the heat exchange medium.

[0045] In an embodiment, the sealing part 2 can be bonded with the heat exchange partition plate 1, which is a simpler operation mode of connection, and is convenient for subsequent disassembly and replacement of the sealing part 2.

[0046] In an embodiment, the sealing part 2 can also be integrally formed with the heat exchange partition plate 1. The integrally formed part has no joint or welding point, reducing the stress concentration point, thereby improving the strength and durability of the overall structure, and since there is no joint or welding point, the integrally formed part can achieve perfect sealing, significantly reducing the risk of leakage.

[0047] Again refer to Figure 1 , the heat exchange partition plate 1 is provided with a plurality of protrusions 3 along the length direction thereof, the protrusions 3 are arrow-shaped, the protrusions 3 include a first rib 31 and a second rib 32, one end of the first rib 31 and one end of the second rib 32 are connected to form an arrowhead, the other end of the first rib 31 and the other end of the second rib 32 are separated from each other to form an arrow tail; the arrowheads of the protrusions 3 on the adjacent two heat exchange partition plates 1 face in opposite directions.

[0048] In practical application, the heat exchange partition plate 1 is provided with a plurality of protrusions 3, the plurality of protrusions 3 increase the surface area of the heat exchange partition plate 1, thereby providing more heat transfer surface, and greater heat exchange area means higher heat transfer efficiency; the protrusions 3 increase the resistance of fluid flowing in the flow channel 16, prolong the heat exchange time of water flow and heat exchange medium, thereby improving the heat exchange efficiency.

[0049] Specifically, the protrusion 3 is in the shape of an arrow, the first ridge 31 and the second ridge 32 are connected at one end and separated from each other at the other end, forming a "V"-shaped protrusion 3, the "V"-shaped protrusion 3 includes an arrowhead and an arrowtail, the flow directions in the adjacent two water flow channels 11 and the heat exchange medium channels 12 can be in opposite directions, so that the water flow and the heat exchange medium form a countercurrent direction, prolonging the heating time, the direction of the arrowhead is the same as the flow direction of the water flow in the water flow channel 11 or the flow direction of the heat exchange medium in the heat exchange medium channel 12, and since the flow directions in the water flow channel 11 and the heat exchange medium channel 12 are opposite, the directions of the arrowheads of the protrusions 3 on the adjacent two heat exchange partition plates 1 are also opposite, the "V"-shaped protrusion 3 forms a guiding effect on the water flow direction or the heat exchange medium flow direction, on the one hand, making it flow more smoothly, and on the other hand, prolonging the heat exchange time of the water flow and the heat exchange medium.

[0050] It should be noted that the heat exchanger includes a first water inlet, a first water outlet, a second water inlet and a second water outlet, the first water inlet and the first water outlet are connected with the water flow channel respectively, so as to facilitate the water flow to enter the water flow channel from the first water inlet and flow out of the water flow channel from the first water outlet, the second water inlet and the second water outlet are connected with the heat exchange medium channel respectively, so as to facilitate the heat exchange medium to enter the heat exchange medium channel from the second water inlet and flow out of the heat exchange medium channel from the second water outlet.

[0051] Different from the prior art, the embodiment of the application provides a heat exchanger and a water supply device, the water supply device comprising the heat exchanger and a hot tank, the inside of the heat exchanger being provided with a water flow channel 11 and a heat exchange medium channel 12 which are isolated from each other, and the hot tank and the heat exchange medium channel 12 being communicated; the heat exchanger comprising a plurality of heat exchange partitions 1, the plurality of heat exchange partitions 1 being arranged in sequence along a first direction, the water flow channel 11 or the heat exchange medium channel 12 being formed between adjacent heat exchange partitions 1, and the outer edges 14 of the plurality of heat exchange partitions 1 being stacked and welded. Compared with the prior art, the heat exchanger of the application adopts the structure of the plurality of heat exchange partitions 1, the water flow channel 11 or the heat exchange medium channel 12 being formed between the two adjacent heat exchange partitions 1, the cross-sectional area of the water flow channel 11 and the heat exchange medium channel 12 formed in this way being large, and the water flow channel 11 and the heat exchange medium channel 12 being in a stacked manner, so that the contact area of the water flow channel 11 and the heat exchange medium channel 12 is increased, and then the heat conduction area of the heat exchange medium channel 12 and the water flow channel 11 is increased, at the same time, the plurality of heat exchange partitions 1 are arranged in sequence along the height direction, so that the length of the water flow channel 11 and the heat exchange medium channel 12 along the height direction is small, the flow per unit area of the water flow in the water flow channel 11 is small, and then the water flow can quickly absorb the heat of the heat exchange medium, and the heat exchange efficiency is improved. The water supply device adopting the heat exchanger has shorter heating time, accelerates the speed of the water supply device to output hot water, and improves the user's water experience.

[0052] The above is only the specific embodiment of the application, and it should be pointed out that, for ordinary skilled in the art, without departing from the principle of the application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the application.

Claims

1. A heat exchanger, characterized by, The heat exchanger is internally provided with water flow channels (11) and heat exchange medium channels (12) which are isolated from each other, and comprises: A plurality of heat exchange partitions (1) are sequentially arranged along a first direction, and the water flow channels (11) or the heat exchange medium channels (12) are formed between adjacent heat exchange partitions (1), and the outer edges (14) of the plurality of heat exchange partitions (1) are stacked and welded.

2. The heat exchanger of claim 1, wherein Along the first direction, the water flow channels (11) and the heat exchange medium channels (12) are sequentially and alternately arranged.

3. The heat exchanger of claim 1, wherein The heat exchange partition (1) comprises a panel (13) and an outer edge (14), the outer edge (14) is connected to the outer periphery of the panel (13), the panels (13) of adjacent heat exchange partitions (1) are spaced apart to form the water flow channels (11) or the heat exchange medium channels (12); and the outer edges (14) of the plurality of heat exchange partitions (1) are stacked and welded together.

4. The heat exchanger of claim 3, wherein The heat exchange partition (1) comprises a bevel portion (15) connected between the outer edge (14) and the panel (13), a first side of the bevel portion (15) is integrally or fixedly connected to the outer edge (14), and a second side of the bevel portion (15) extends obliquely away from the outer edge (14); and the panels (13) of adjacent heat exchange partitions (1) are spaced apart.

5. The heat exchanger of claim 4, wherein The second sides of the plurality of bevel portions (15) are integrally welded; or the second side of each bevel portion (15) integrally extends a welding edge, each welding edge is stacked, and the outer edges of the plurality of welding edges are integrally welded by the same welding seam.

6. The heat exchanger according to any one of claims 1 to 5, characterized in that Two adjacent heat exchange partitions (1) form a flow channel (16), along the first direction, a plurality of heat exchange partitions (1) form a plurality of layers of flow channels (16), the plurality of layers of flow channels (16) are sequentially divided into odd layers of flow channels (161) and even layers of flow channels (162) along the first direction, the plurality of odd layers of flow channels (161) are in communication with each other, the plurality of even layers of flow channels (162) are in communication with each other, the odd layers of flow channels (161) and the even layers of flow channels (162) are isolated from each other; the odd layers of flow channels (161) are one of the water flow channels (11) and the heat exchange medium channels (12), and the even layers of flow channels (162) are the other one of the water flow channels (11) and the heat exchange medium channels (12).

7. The heat exchanger of claim 6, wherein The heat exchanger is provided with a first flow guide channel (17) and a second flow guide channel (18) penetrating each flow channel (16), and comprises a sealing portion (2) for sealing all odd layers of flow channels (161) in the first flow guide channel (17), and the sealing portion (2) is used for sealing all even layers of flow channels (162) in the second flow guide channel (18).

8. The heat exchanger of claim 7, wherein The sealing portion (2) is welded, bonded or integrally formed with the heat exchange partition (1).

9. The heat exchanger according to any one of claims 1-5, characterized in that The heat exchange partition (1) is provided with a plurality of protrusions (3) along its length direction, the protrusions (3) are arrow-shaped, the protrusions (3) comprise a first ridge (31) and a second ridge (32), one end of the first ridge (31) and one end of the second ridge (32) are connected to form an arrowhead, the other end of the first ridge (31) and the other end of the second ridge (32) are separated from each other to form an arrow tail; the arrowheads of the protrusions (3) on two adjacent heat exchange partitions (1) face opposite directions.

10. A water supply device characterized by comprising: The heat exchanger comprises the heat exchanger according to any one of claims 1-9 and a heat tank, the heat tank is communicated with the heat exchange medium channel (12).

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