Heat exchanger and water supply device

Abstract

The heat exchanger comprises a heat exchanger body integrally formed through 3D printing, the heat exchanger body comprises a plurality of heat exchange laminates, the heat exchange laminates are arranged at intervals in the first direction and form a plurality of flow channels, the flow channels are divided into first channels and second channels, and the first channels and the second channels are isolated from each other. Compared with the prior art, the heat exchanger body is integrally formed through the 3D printing technology, the multiple first channels and the multiple second channels are formed in the heat exchanger, the multiple first channels communicate with one another, the multiple second channels communicate with one another, and each first channel and each second channel need to be isolated from one another, so that the structural design of the heat exchanger is complex, and the heat exchange efficiency is improved. The method is difficult to implement in the traditional design, but a heat exchanger with a complex internal structure such as a micro-channel, a bent path or an irregular shape can be created by utilizing the 3D printing technology, assembly is not needed, the production efficiency of the heat exchanger is improved, and the design difficulty is reduced.

Description

TECHNICAL FIELD

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

[0002] Water heater is a kind of domestic or industrial equipment for heating and providing hot water. Heat exchanger (also known as heat exchanger) is a key component in water heater, and the basic function of heat exchanger is to transfer heat from one medium (such as gas or liquid) to another medium to achieve the purpose of heating or cooling. For example, heat exchanger usually needs to transfer the heat of heat exchange medium to water flow to achieve the purpose of heating water flow, and multiple flow channels are provided inside the heat exchanger, which need to be connected or isolated, so that the design of multiple flow channels is more complex, thereby increasing the difficulty of structural design of heat exchanger. 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 simplify the structural design of heat exchanger.

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

[0005] A kind of heat exchanger, including 3D printing integrated heat exchanger main body, the heat exchanger main body includes multiple heat exchange layer plates, each heat exchange layer plate is spaced apart along the first direction and forms multiple flow channels, multiple flow channels are divided into first channel and second channel, the first channel and the second channel are isolated from each other.

[0006] As one of the implementation ways, along the first direction, the first channel and the second channel are alternately arranged;Each first channel is communicated with each other, and each second channel is communicated with each other.

[0007] As one of the implementation ways, the heat exchanger main body includes support structure, and both ends of the support structure are integrally connected to adjacent heat exchange layer plates.

[0008] As one of the implementation ways, the support structure is columnar or sheet-shaped, and the support structure is provided with multiple groups along the length or / and width direction of the heat exchanger main body.

[0009] As one of the implementation ways, the heat exchanger includes first group interface and second group interface, the first group interface and the first channel are in conduction, and the second group interface and the second channel are in conduction.

[0010] As one of the implementation ways, the middle part of adjacent two heat exchange layer plates is spaced apart to form the flow channel, and the edge part of adjacent two heat exchange layer plates is connected together.

[0011] As one of the implementation manners, the material of the outermost heat exchange layer plate in the plurality of heat exchange layer plates is a non-metal material or / and is provided with a heat insulation structure along the first direction, and the rest of the heat exchange layer plates are metal heat exchange layer plates or / and are provided with a heat conduction structure.

[0012] As one of the implementation manners, the adjacent heat exchange layer plates are provided with a first group of hole positions and a second group of hole positions, the first channel is provided with a first partition ring, and two ends of the first partition ring are integrally connected to the edges of the first group of hole positions and the second group of hole positions respectively; the second channel is provided with a second partition ring, and two ends of the second partition ring are integrally connected to the edges of the first group of hole positions and the second group of hole positions respectively.

[0013] As one of the implementation manners, the plurality of flow channels are sequentially divided into odd layer flow channels and even layer flow channels along the first direction, the plurality of odd layer flow channels are communicated with each other, the plurality of even layer flow channels are communicated with each other, and 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 first channel and the second channel, and the even layer flow channel is the other one of the first channel and the second channel.

[0014] The utility model adopts the following technical scheme, a water heater, including the heat exchanger and the hot jar of any one above, the hot jar with second channel intercommunication.

[0015] The utility model discloses a kind of heat exchanger and water supply device, heat exchanger includes 3D printing integrated heat exchanger main body, heat exchanger main body includes multiple heat exchange layer plates, each heat exchange layer plate is spaced apart and forms multiple flow channels along first direction, multiple flow channels are divided into first channel and second channel, first channel and second channel are isolated from each other. Compared with the prior art, heat exchanger main body is integrally formed using 3D printing technology, since multiple first channels and multiple second channels are provided in the heat exchanger, multiple first channels are communicated with each other, multiple second channels are communicated with each other, and each first channel needs to be isolated from each second channel. In this way, the structure design of the heat exchanger is complicated, which is difficult to achieve in traditional design. However, using 3D printing technology can create a heat exchanger with complex internal structure, such as microchannels, curved paths or irregular shapes, without the need for assembly, improving the production efficiency of the heat exchanger and reducing the design difficulty. The water supply device using this heat exchanger effectively improves the production efficiency and assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic view of a heat exchanger according to an embodiment of the present application is shown;

[0017] Figure 2 A cross-sectional view of a heat exchanger A-A according to an embodiment of the present application is shown;

[0018] Figure 3 A cross-sectional view of a heat exchanger B-B is shown.

[0019] Reference signs: 1, heat exchange layer plate; 2, first partition ring; 3, first group of interfaces; 4, second group of interfaces; 5, support structure; 6, second partition ring; 11, first channel; 12, second channel; 13, flow channel; 14, first flow guide channel; 15, second flow guide channel; 131, odd layer flow channel; 132, even layer flow channel. DETAILED DESCRIPTION

[0020] In the present application, the terms "provided with", "provided", "connected" should be interpreted broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] 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 indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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.

[0022] In addition, the terms "first" and "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" and "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, such as two, three, etc., unless otherwise specifically limited.

[0023] Also, in addition to indicating the orientation or positional relationship, the above-mentioned part of the term 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 those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0024] In order to make the utility model purposes, technical schemes and advantages more clearly, the following will be further detailed in combination with the drawings and examples.

[0025] Referring to Figure 1 The embodiment of the application provides a water supply device, which comprises a heat exchanger and a hot tank (not shown in the figure), the heat exchanger comprises a first channel 11 and a second channel 12 which are spaced from each other, the first channel 11 and the second channel 12 are in heat conduction connection, the first channel 11 can be used as a first channel for flowing of drinking water (use water), the second channel 12 can be used as a second channel for flowing of heat exchange medium, and the hot tank is communicated with the second channel 12.

[0026] In actual application, the heat exchange medium is stored in the hot tank, the heat exchange medium is a kind of substance for transferring heat, for example hot water or high-temperature liquid, etc., the hot tank is communicated with the second channel 12, so that the heat exchange medium (hot water) flows in the second channel 12, and the heat of the heat exchange medium (hot water) is transferred to the water flow in the first channel 11 through the heat conduction connection between the second channel 12 and the first channel 11, to realize the effect of heating drinking water (use water).

[0027] It should be noted that the water heater further comprises a pump body and a heating element, the pump body is connected with the hot tank, and the pump body is used to drive the hot water (heat exchange medium) to circulate and flow in the hot tank and the second channel 12, the heating element is connected with the hot tank, and the heating element is used to heat the hot water (heat exchange medium) in the hot tank, so that the hot water (heat exchange medium) is kept at a specific temperature, and the water flow in the first channel 11 is heated.

[0028] Referring to Figure 1 The heat exchanger comprises a 3D-printed heat exchanger body, the heat exchanger body comprises a plurality of heat exchange layer plates 1, the heat exchange layer plates 1 are spaced apart along a first direction and form a plurality of flow channels 13, the plurality of flow channels 13 are divided into the first channel 11 and the second channel 12, and the first channel 11 and the second channel 12 are isolated from each other.

[0029] In actual application, the heat exchanger body is integrally formed by using 3D printing technology, since the heat exchanger has a plurality of first channels 11 and a plurality of second channels 12, the plurality of first channels 11 are communicated with each other, the plurality of second channels 12 are communicated with each other, and each first channel 11 needs to be isolated from each second channel 12, in this way, the structure design of the heat exchanger is complicated, which is difficult to realize in traditional design, but the 3D printing technology can create a heat exchanger with a complex internal structure, such as a microchannel, a curved path or an irregular shape, and the heat exchanger does not need to be assembled, thereby improving the production efficiency of the heat exchanger and reducing the design difficulty.

[0030] Referring to Figure 2The first channels 11 and the second channels 12 are arranged alternately along the first direction; each first channel 11 is in communication with each other, and each second channel 12 is in communication with each other.

[0031] In practical applications, the height direction of the heat exchanger can be set as the first direction, and the first channels 11 and the second channels 12 are arranged alternately in sequence, so that one first channel 11 is clamped between two second channels 12, and the first channel 11 is simultaneously subjected to heat conduction from the second channels 12 on both sides, greatly shortening the heating time of the water flow and improving the efficiency of the hot water output.

[0032] Referring again to Figure 2 The heat exchanger body includes a support structure 5, and both ends of the support structure 5 are integrally connected to adjacent heat exchange panels 1.

[0033] In practical applications, in the 3D printing process, the support structure 5 is designed to overcome certain physical limitations and ensure the quality and structural integrity of the final product. Specifically, since two adjacent heat exchange panels 1 are spaced apart to form a flow channel 13, when printing the heat exchange panel 1, the part of the heat exchange panel 1 where the flow channel 13 is formed is in a suspended state, and these parts may be deformed or sag due to gravity without support. The support structure 5 provides the necessary support to enable these suspended areas to be correctly formed.

[0034] In an embodiment, the support structure 5 can be columnar or sheet-shaped, and the support structure 5 is provided with multiple groups along the length and / or width direction of the heat exchanger body.

[0035] In practical applications, the support structure 5 can generally be columnar or sheet-shaped, and the columnar and sheet-shaped structures have a small volume, mainly to avoid blocking the flow of water or heat exchange medium, while the support structure 5 can be provided with multiple groups. The multiple groups of support structures 5 can be arranged in sequence along the length direction of the heat exchanger to ensure that the heat exchange panel 1 can be correctly formed in the length direction and avoid sagging, and the multiple groups of support structures 5 can also be arranged in sequence along the width direction of the heat exchanger to ensure that the heat exchange panel 1 can be correctly formed in the width direction.

[0036] Referring again to Figure 2 The heat exchanger includes a first group of interfaces 3 and a second group of interfaces 4, the first group of interfaces 3 is in communication with the first channels 11, and the second group of interfaces 4 is in communication with the second channels 12.

[0037] In practical application, the first group of interfaces 3 includes a first water inlet and a first water outlet, the first water inlet is communicated with the water inlet pipe and the first channel 11 respectively, the first water outlet is communicated with the first channel 11 and the water outlet pipe respectively, water flows into the first channel 11 from the first water inlet, is heated by the heat exchange medium and then flows to the water outlet pipe from the first water outlet, and flows out of the water outlet pipe for use by the user. The second group of interfaces 4 includes a second water inlet and a second water outlet, the second water inlet is communicated with the heat tank and the second channel 12 respectively, the second water outlet is communicated with the heat tank and the second channel 12 respectively, the heat exchange medium in the heat tank flows into the second channel 12 from the second water inlet, exchanges heat with the water flow in the second channel 12, and then flows back to the heat tank from the second water outlet for heating, so as to facilitate the next heat exchange.

[0038] Referring again to Figure 2 , the middle parts of the two adjacent heat exchange layer plates 1 are spaced to form the flow channel 13, and the edge parts of the two adjacent heat exchange layer plates 1 are connected together.

[0039] In practical application, the heat exchange layer plate 1 includes an outer edge side and a main body part, the outer periphery of the main body part is connected with the outer edge side, the outer edge sides of the plurality of heat exchange layer plates 1 are stacked and connected together, the main body parts of the plurality of heat exchange layer plates 1 are spaced from each other to form the flow channel 13, and the main body part has a large cross section, so it can serve as the heat conduction surface of the first channel 11 and the second channel 12, while the outer edge side mainly serves as a connecting part to ensure that the plurality of heat exchange layer plates 1 can be stably connected, and the plurality of outer edge sides can be fused together during 3D printing to achieve sealed connection, without the need for other sealing techniques to seal the first channel 11 and the second channel 12, and the structure design is simpler.

[0040] In an embodiment, along the first direction, the material of the heat exchange layer plate 1 located at the outermost side among the plurality of heat exchange layer plates 1 is a non-metal material or / and is provided with a heat insulation structure, and the remaining heat exchange layer plates 1 are metal heat exchange layer plates 1 or / and are provided with a heat conduction structure.

[0041] In practical application, the 3D printing technology can use multiple materials in the same part, and the most suitable material can be used for different parts of the heat exchanger according to different needs, for example, a metal material with high heat conductivity is used for the heat exchange area, and a non-metal material with good heat preservation performance is used for the part that contacts the outside. Specifically, the heat exchange layer plate 1 located at the outermost side can be made of a non-metal material with good heat preservation performance, which can ensure that the heat of the heat exchange medium is not transmitted to the outside, reducing heat loss and improving thermal efficiency. At the same time, the non-metal material is lighter in weight, reducing the overall weight of the heat exchanger, and has good insulation performance and corrosion resistance, prolonging the service life of the heat exchanger. The non-metal material can be made of plastic or the like.

[0042] In addition to the use of non-metal materials, the outer heat exchange layer plate 1 can also be provided with a heat insulation structure to achieve the heat preservation effect and avoid heat loss. Of course, the material of the outer heat exchange layer plate 1 in this way can also be non-metal. The heat insulation structure can be a cavity, which should be a vacuum structure. The vacuum cavity has almost no air or other gas, which can effectively prevent the heat exchange layer plate 1 from transferring heat to the outside through conduction and convection, thereby achieving the heat preservation effect. Or the heat insulation structure is filled with thermal insulation materials; the thermal insulation materials can adopt foam or thermal insulation cotton structure, which has a small thermal conductivity and poor heat conduction performance, which can effectively avoid heat loss of the heat exchange layer plate 1.

[0043] The internal heat exchange layer plate 1 is mainly used for heat exchange, so the internal heat exchange layer plate 1 adopts metal materials. Metal materials (such as copper, aluminum, stainless steel, etc.) usually have a high thermal conductivity, which can quickly and effectively transfer heat from one side to the other side, which makes the metal heat exchange layer plate 1 perform well in the heat exchange process and improves the heat exchange efficiency.

[0044] In addition to the use of metal materials, the heat exchange layer plate 1 can also be provided with a heat conduction structure to achieve the effect of heat exchange. Of course, the heat exchange layer plate 1 provided with the heat conduction structure can not use metal materials. The heat conduction structure can be engraved with patterns. The engraved pattern of the heat conduction structure is a surface texture treatment, the main purpose of which is to optimize heat transfer and flow characteristics by changing the surface structure, thereby improving the heat conduction efficiency. The engraved pattern can significantly increase the actual surface area of the heat conduction surface, thereby providing more heat conduction paths.

[0045] In an embodiment, the main body of the heat exchange layer plate 1 can adopt metal materials with good heat conduction performance, such as copper and aluminum, and the outer side can adopt non-metal materials with good heat preservation performance, which can avoid being scalded when the user touches the outer side.

[0046] Referring to Figure 3 , the adjacent heat exchange layer plates 1 are provided with a first group of hole positions and a second group of hole positions, the first channel 11 is provided with a first partition ring 2, and the two ends of the first partition ring 2 are integrally connected to the edges of the first group of hole positions and the edges of the second group of hole positions, respectively; the second channel 12 is provided with a second partition ring 6, and the two ends of the second partition ring 6 are integrally connected to the edges of the first group of hole positions and the edges of the second group of hole positions, respectively.

[0047] In practical application, the first partition ring 2 and the second partition ring 6 are arranged alternately along the first direction. Since the plurality of first channels 11 need to be communicated with each other, the plurality of second channels 12 need to be communicated with each other, and the first channels 11 and the second channels 12 need to be isolated from each other, the first flow guide channel 14 and the second flow guide channel 15 can be provided along the first direction. The first flow guide channel 14 penetrates the plurality of heat exchange layer plates 1, and the second flow guide channel 15 penetrates the plurality of heat exchange layer plates 1. The second channels 12 in the first flow guide channel 14 are provided with the second partition ring 6, so that the second partition ring 6 seals all the second channels 12 in the first flow guide channel 14. Therefore, when the first flow guide channel 14 is communicated with the water inlet pipe or the heat tank, the water flow or the heat exchange medium can only enter the first channels 11. Similarly, the first channels 11 in the second flow guide channel 15 are provided with the first partition ring 2, so that the first partition ring 2 seals all the first channels 11 in the second flow guide channel 15. Therefore, when the second flow guide channel 15 is communicated with the water inlet pipe or the heat tank, the water flow or the heat exchange medium can only enter the second channels 12.

[0048] Therefore, when the first flow guide channel 14 and the second flow guide channel 15 are respectively communicated with the water inlet pipe and the heat tank, the water flow of the water inlet pipe and the heat exchange medium of the heat tank enter the first channels 11 and the second channels 12 respectively. The first partition ring 2 and the second partition ring 6 ensure that the water flow and the heat exchange medium are not mixed, thereby avoiding affecting the safety of drinking water.

[0049] Again referring to Figure 3 , the plurality of layers of flow channels 13 are sequentially divided into odd layers of flow channels 131 and even layers of flow channels 132 along the first direction. The plurality of odd layers of flow channels 131 are communicated with each other, the plurality of even layers of flow channels 132 are communicated with each other, and the odd layers of flow channels 131 and the even layers of flow channels 132 are isolated from each other. The odd layers of flow channels 131 are one of the first channels 11 and the second channels 12, and the even layers of flow channels 132 are the other of the first channels 11 and the second channels 12.

[0050] In practical application, the odd layers of flow channels 131 are, for example, the first layer, the third layer, and the like, and the even layers of flow channels 132 are, for example, the second layer, the fourth layer, and the like. The odd layers of flow channels 131 can be the second channels 12, and the even layers of flow channels 132 can be the first channels 11. In this way, the opposite sides of each layer of the first channels 11 are heated by the second channels 12 on both sides, thereby effectively saving the heating time of the water flow in the first channels 11 and improving the hot water output speed of the water heater. In this way, the odd layers of flow channels 131 and the even layers of flow channels 132 can be isolated from each other, and the water flow and the heat exchange medium can flow and exchange heat respectively, but are not mixed, thereby ensuring the safety of the user's drinking water (water).

[0051] In an embodiment, the heat exchange layer plate 1 is provided with a plurality of barrier ribs along the length direction thereof. In practical application, the heat exchange layer plate 1 is provided with a plurality of barrier ribs, and the plurality of barrier ribs increase the surface area of the heat exchange layer plate 1, thereby providing more heat transfer surface. Greater heat exchange area means higher heat transfer efficiency. The barrier ribs increase the flow resistance of the fluid in the flow channel 13, prolong the heat exchange time of the water flow and the heat exchange medium, and thus improve the heat exchange efficiency.

[0052] In an embodiment, the barrier ribs include first ribs and second ribs, and the first ribs and the second ribs are arranged in a V shape. The V-shaped flow channel changes the flow direction of the fluid, so that more turbulent flow is generated when the fluid flows through the V-shaped groove. The turbulent flow can increase the heat exchange efficiency between the fluid and the wall surface, thereby improving the overall heat exchange performance.

[0053] In an embodiment, the barrier ribs are in a wave shape. The shape of the wave-shaped flow channel increases the actual contact area between the fluid and the wall surface, provides more heat exchange opportunities, and improves the heat exchange capacity per unit volume.

[0054] In addition, the opening directions of the V-shaped barrier ribs on the adjacent two heat exchange layer plates 1 are opposite.

[0055] In practical application, the flow directions in the adjacent first channel 11 and second channel 12 can be opposite, so that the water flow and the heat exchange medium form a counter-flow direction, thereby prolonging the heating time. In the corresponding first channel 11 and second channel 12, the “V”-shaped barrier ribs are generally the same as the flow direction of the water flow or the heat exchange medium, so as to guide the water flow and the heat exchange medium to flow more smoothly. Therefore, since the flow directions in the first channel 11 and the second channel 12 are opposite, the opening directions of the V-shaped barrier ribs on the adjacent two heat exchange layer plates 1 are opposite, thereby guiding the water flow and the heat exchange medium to flow more smoothly and prolonging the heat exchange time of the water flow and the heat exchange medium to a certain extent.

[0056] Different from the prior art, the embodiment of the application provides a heat exchanger and a water supply device. The heat exchanger comprises a 3D-printed integrally formed heat exchanger body. The heat exchanger body comprises a plurality of heat exchange layer plates 1. The heat exchange layer plates 1 are spaced apart along a first direction and form a plurality of flow channels 13. The plurality of flow channels 13 are divided into first channels 11 and second channels 12. The first channels 11 and the second channels 12 are isolated from each other. Compared with the prior art, the heat exchanger body is integrally formed by using the 3D printing technology. Since the heat exchanger has a plurality of first channels 11 and a plurality of second channels 12, the plurality of first channels 11 are communicated with each other, the plurality of second channels 12 are communicated with each other, and each first channel 11 needs to be isolated from each second channel 12. In this way, the structure design of the heat exchanger is complicated, which is difficult to realize in the traditional design. However, the 3D printing technology can create a heat exchanger with a complex internal structure, such as a microchannel, a curved path or an irregular shape, without the need for assembly, thereby improving the production efficiency of the heat exchanger and reducing the design difficulty. The water supply device using the heat exchanger effectively improves the production efficiency and assembly efficiency.

[0057] The above merely describes the specific embodiments of the application. It should be noted that, for those skilled in the art, without departing from the principles of the application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the application.

Claims

1. A heat exchanger, characterized by, The heat exchanger comprises a 3D-printed heat exchanger body, the heat exchanger body comprises a plurality of heat exchange layer plates (1), each of the heat exchange layer plates (1) is spaced apart along a first direction to form a plurality of flow channels (13), and the plurality of flow channels (13) are divided into first channels (11) and second channels (12), the first channels (11) and the second channels (12) are isolated from each other.

2. The heat exchanger of claim 1, wherein Along the first direction, the first channels (11) and the second channels (12) are alternately arranged; each of the first channels (11) is communicated with each other, and each of the second channels (12) is communicated with each other.

3. The heat exchanger of claim 1, wherein The heat exchanger body comprises a support structure (5), both ends of the support structure (5) are integrally connected to adjacent heat exchange layer plates (1).

4. The heat exchanger of claim 3, wherein The support structure (5) is columnar or sheet-shaped, and a plurality of groups of the support structure (5) are arranged along the length and / or width direction of the heat exchanger body.

5. The heat exchanger of claim 1, wherein The heat exchanger comprises a first group of interfaces (3) and a second group of interfaces (4), the first group of interfaces (3) is communicated with the first channels (11), and the second group of interfaces (4) is communicated with the second channels (12).

6. The heat exchanger of claim 1, wherein The middle parts of two adjacent heat exchange layer plates (1) are spaced apart to form the flow channels (13), and the edge parts of the two adjacent heat exchange layer plates (1) are connected together.

7. The heat exchanger of claim 6, wherein Along the first direction, the material of the outermost heat exchange layer plate (1) among the plurality of heat exchange layer plates (1) is a non-metal material or / and is provided with a heat insulation structure, and the remaining heat exchange layer plates (1) are metal heat exchange layer plates (1) or / and are provided with a heat conduction structure.

8. The heat exchanger of claim 1, wherein The first group of holes and the second group of holes are arranged in adjacent heat exchange layer plates (1), the first channel (11) is provided with a first partition ring (2), both ends of the first partition ring (2) are integrally connected to the edges of the first group of holes and the second group of holes respectively, the second channel (12) is provided with a second partition ring (6), both ends of the second partition ring (6) are integrally connected to the edges of the first group of holes and the second group of holes respectively.

9. The heat exchanger of claim 6, wherein, The plurality of flow channels (13) are sequentially divided into odd layer flow channels (131) and even layer flow channels (132) along the first direction, the plurality of odd layer flow channels (131) are communicated with each other, the plurality of even layer flow channels (132) are communicated with each other, the odd layer flow channels (131) and the even layer flow channels (132) are isolated from each other, the odd layer flow channels (131) are one of the first channels (11) and the second channels (12), and the even layer flow channels (132) are the other one of the first channels (11) and the second channels (12).

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 second channels (12).

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