Plate heat exchanger and water supply device

Abstract

The utility model discloses a plate heat exchanger and a water supply device, the plate heat exchanger comprises a heat exchanger main body, the heat exchanger main body comprises a plurality of heat conducting plates, the plurality of heat conducting plates are sequentially arranged along the first direction of the plate heat exchanger, and a first channel and a second channel are alternately formed between every two adjacent heat conducting plates along the first direction; the first channel and the second channel are isolated from each other, and the edge parts of the two adjacent heat conducting plates are bonded. Compared with the prior art, the plate heat exchanger adopts the structure of the multiple heat conduction plates, the multiple heat conduction plates are sequentially arranged in the first direction, and therefore the length of the first channel and the length of the second channel in the first direction are small, and the flow of the unit area of the longitudinal section of water flow in the first channel is small; and therefore, the water flow can quickly absorb the heat of the heat exchange medium, 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 plate heat exchanger and water supply device. BACKGROUND

[0002] Water heater is a kind of household or industrial equipment, mainly used to heat water to the temperature suitable for use. It is widely used in home, commercial and industrial environments, to provide hot water for shower, dishwashing, laundry, etc. 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. The plate heat exchanger in the prior art has low heat exchange efficiency, and the water flow takes a long time to heat to the specified temperature in the plate 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 plate heat exchanger and water supply device, which can improve the heat exchange efficiency of the plate 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 plate heat exchanger, the plate heat exchanger comprises a heat exchanger main body, the heat exchanger main body comprises a plurality of heat-conducting plates, a plurality of the heat-conducting plates are arranged in order along a first direction of the plate heat exchanger, along the first direction, first channels and second channels are alternately formed between each adjacent heat-conducting plate, the first channels and the second channels are isolated from each other, and the edge portions of two adjacent heat-conducting plates are bonded.

[0006] As one of the embodiments, the heat-conducting plate comprises a main body portion and the edge portion, the edge portion is connected to the outer periphery of the main body portion, the main body portions of a plurality of heat-conducting plates are arranged at intervals to form the first channels or the second channels; the edge portions of adjacent heat-conducting plates are stacked and bonded together.

[0007] As one of the embodiments, the plate heat exchanger comprises a first heat-conducting glue, and the edge portions of two adjacent heat-conducting plates are filled with the first heat-conducting glue.

[0008] As one of the embodiments, the heat-conducting plate comprises a guide portion, the first side of the guide portion is fixedly connected or integrally formed with the edge portion, the second side of the guide portion extends obliquely away from the edge portion and is fixedly connected or integrally formed with the main body portion; the guide portions of two adjacent heat-conducting plates are spaced apart, or the guide portions of two adjacent heat-conducting plates are filled with a second heat-conducting glue.

[0009] As one of the embodiments, the edge portion extends along a horizontal direction, or, extends obliquely towards the main body portion from top to bottom along a first direction.

[0010] As one of the embodiments, the first channel and the second channel are both provided with at least two, and each of the first channel and each of the second channel are arranged alternately; the heat exchanger main body is provided with a first group of interfaces and a second group of interfaces, the first group of interfaces communicates with the first channel, and the second group of interfaces communicates with the second channel.

[0011] As one of the embodiments, the edge portion is provided with at least one circle of glue grooves along the circumference thereof, and the first heat-conducting glue is filled in the glue grooves.

[0012] As one of the embodiments, the heat-conducting plate is provided with a plurality of barrier ribs along the length direction thereof, the barrier ribs include a first convex rib and a second convex rib, and the first convex rib and the second convex rib are arranged in a V shape; or, the barrier ribs are in a wave shape.

[0013] As one of the embodiments, the opening directions of the V-shaped barrier ribs on the adjacent two heat-conducting plates are opposite.

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

[0015] The utility model discloses the beneficial effect lies in: a plate heat exchanger and water supply device are provided, and the plate heat exchanger includes heat exchanger main body, and the heat exchanger main body includes a plurality of heat-conducting plates, and the plurality of heat-conducting plates are sequentially arranged along the first direction of the plate heat exchanger, and along the first direction, the first channel and the second channel are alternately formed between each adjacent heat-conducting plate, the first channel and the second channel are isolated from each other, and the edge portions of the adjacent two heat-conducting plates are bonded. Compared with the prior art, the plate heat exchanger of the application adopts the structure of a plurality of heat-conducting plates, the plurality of heat-conducting plates are in a stacked manner and are bonded to each other, the bonding mode is simpler to operate and does not cause damage to the heat-conducting plates, and the heat-conducting plates are reusable. The first channel and the second channel formed by the plurality of heat-conducting plates have a larger cross-sectional area, thereby increasing the contact area of the first channel and the second channel, improving the heat-conducting efficiency, and the plurality of heat-conducting plates are sequentially arranged along the first direction, so the length of the first channel and the second channel along the first direction is smaller, the flow rate of the water flow per unit area in the first channel is smaller, and the water flow can quickly absorb the heat of the heat exchange medium, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1A structure schematic view of a plate heat exchanger is shown in the utility model;

[0017] Figure 2 A cross section schematic view of a plate heat exchanger A-A is shown in the utility model;

[0018] Figure 3 Another cross section schematic view of a plate heat exchanger is shown in the utility model;

[0019] Figure 4 A top view schematic view of a plate heat exchanger is shown in the utility model.

[0020] Sign: 1, heat conduction plate;2, sealing element;3, barrier rib;11, first channel;12, second channel;13, main body part;14, edge part;15, guide part;16, flow channel;161, odd layer flow channel;162, even layer flow channel;17, first group interface;18, second group interface;171, first flow guide channel;181, second flow guide channel;31, first convex strip;32, second convex strip. DETAILED DESCRIPTION

[0021] In the utility model, the terms "arrange", "have", "connect" should be understood broadly.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 media, or internal communication between two devices, elements or components.For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[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" 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 limited by "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, such as two, three, etc., unless otherwise specifically limited.

[0024] And, in addition to being used to represent the orientation or positional relationship, the above-mentioned part of the term can also be used to represent other meanings, for example, the term "upper" can also be used to represent 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.

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

[0026] Referring to Figure 1 , the embodiment of the present application provides a water supply device, which comprises a plate heat exchanger and a hot tank, the inside of the plate heat exchanger is provided with a first channel 11 and a second channel 12 which are isolated from each other, the first channel 11 and the second channel 12 are in heat conduction connection, the first channel 11 serves as a water flow channel, the second channel 12 serves as a heat exchange medium channel, and the hot tank is in communication with the second channel 12.

[0027] In actual application, the inside of the hot tank is provided with heat exchange medium, the first channel 11 is in communication with the water inlet pipe and the water outlet pipe respectively, the water flow flows into the first channel 11 from the water inlet pipe and flows out from the water outlet pipe for use by the user, the hot tank is connected with the second channel 12, the hot water (heat exchange medium) in the hot tank flows to the second channel 12, when the hot water (heat exchange medium) flows in the second channel 12, the hot water (heat exchange medium) exchanges heat with the water in the first channel 11, so as to heat the water in the first channel 11, after the water in the first channel 11 is heated once by the hot water (heat exchange medium) in the second channel 12, the subsequent water flow is heated twice by the heater to reach the set temperature, and the time required for the water flow to reach the set temperature is short (or the power required is small), therefore, the user can release the hot water at the set temperature by opening the faucet, and the effect of hot water immediately released is realized.

[0028] It should be noted that the water supply device further comprises a pump body and a heating member, the pump body is connected with the hot tank, 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 member is connected with the hot tank, and the heating member 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.

[0029] Referring to Figure 1 and Figure 2 , the plate heat exchanger comprises a heat exchanger main body, the heat exchanger main body comprises a plurality of heat conduction plates 1, the plurality of heat conduction plates 1 are arranged in sequence along a first direction of the plate heat exchanger, along the first direction, first channels 11 and second channels 12 are alternately formed between each adjacent heat conduction plate 1, the first channels 11 and the second channels 12 are isolated from each other, and the edge portions 14 of the two adjacent heat conduction plates 1 are bonded.

[0030] In order to clearly describe the embodiments, Figure 2 The first direction of the heat exchanger body is represented by the X direction. In actual applications, the plurality of heat-conducting plates 1 are arranged in sequence along the first direction, and the first channel 11 or the second channel 12 is formed between two adjacent heat-conducting plates 1. The first channel 11 and the second channel 12 are isolated from each other and are in thermal connection. The first channel 11 is for water flow, and the second channel 12 is for heat exchange medium. The second channel 12 is in thermal connection with the first channel 11, so as to exchange heat between the heat exchange medium and the water flow, thereby achieving the effect of heating the water flow. The first channel 11 and the second channel 12 are arranged alternately along the first direction, which can increase the cross-sectional area of the first channel 11 and the second channel 12, thereby increasing the heat-conducting area of the first channel 11 and the second channel 12 in contact, and improving the heat-conducting efficiency.

[0031] The edge portions 14 of two adjacent heat-conducting plates 1 are bonded together, so as to seal the first channel 11 and the second channel 12, thereby preventing the water flow in the first channel 11 or the heat exchange medium in the second channel 12 from penetrating to the outside, which can pollute the water supply environment and cause water waste.

[0032] Compared with the prior art, the plate heat exchanger of the present application adopts the structure of a plurality of heat-conducting plates 1, which are stacked and bonded together. The bonding method is simple to operate and does not cause damage to the heat-conducting plates 1, and the heat-conducting plates 1 are reusable. The first channel 11 and the second channel 12 formed by the plurality of heat-conducting plates 1 have a large cross-sectional area, thereby increasing the contact area of the first channel 11 and the second channel 12, improving the heat-conducting efficiency, and arranging the plurality of heat-conducting plates 1 in sequence along the first direction, thereby reducing the length of the first channel 11 and the second channel 12 along the first direction, reducing the flow rate per unit area of the water flow in the first channel 11, and improving the heat exchange efficiency.

[0033] In an embodiment, the first channel 11 and the second channel 12 are each provided with at least two, and the first channels 11 and the second channels 12 are arranged alternately in sequence. The heat exchanger body is provided with a first group of interfaces 17 and a second group of interfaces 18. The first group of interfaces 17 is in communication with the first channel 11, and the second group of interfaces 18 is in communication with the second channel 12.

[0034] The first group of interfaces 17 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 18 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.

[0035] In actual application, along the first direction, the opposite sides of the first channel 11 are both provided with the second channel 12, and the second channels 12 on the two sides conduct heat to the same first channel 11, so that the water flow in the first channel 11 obtains more heat in the same time, which is beneficial to save the heating time of the water flow.

[0036] The first channel 11 and the second channel 12 are provided with multiple, which can improve the water flow heated by the water supply device in unit time, so as to provide more hot water and enhance the use experience of the water supply device.

[0037] Referring again to Figure 2 , the heat conduction plate 1 includes a main body part 13 and an edge part 14, the edge part 14 is connected to the outer periphery of the main body part 13, the main body parts 13 of multiple heat conduction plates 1 are arranged at intervals, so as to form the first channel 11 or the second channel 12; the edge parts 14 of adjacent heat conduction plates 1 are stacked and bonded together.

[0038] In actual application, the multiple main body parts 13 are arranged at intervals to form the first channel 11 or the second channel 12, the main body part 13 mainly serves as the heat conduction surface of the first channel 11 and the second channel 12, so the area of the main body part 13 is large and located in the middle of the heat conduction plate 1, and the edge part 14 mainly serves as the connecting part of two heat conduction plates 1, the edge part 14 is arranged at the outer periphery of the main body part 13, so as to connect the adjacent two edge parts 14, the multiple edge parts 14 are stacked together, and the adjacent two edge parts 14 are bonded together, the bonding can uniformly distribute stress, avoids the stress concentration points caused by welding or mechanical connection (such as bolts, rivets), thereby improving the strength and durability of the structure, and the operation is simple, without the need for complex tools or equipment, sometimes even the operation can be performed at room temperature, reducing the processing time and cost.

[0039] In an embodiment, the edge portion 14 of two adjacent heat-conducting plates 1 is filled with a first heat-conductive adhesive. The first heat-conductive adhesive not only has the bonding properties of ordinary adhesives, avoiding the penetration of water flow or heat exchange medium to the outside, but also has good heat conduction performance, which can effectively conduct heat from one heat-conducting plate 1 to another heat-conducting plate 1, thus improving the heat transfer efficiency of the heat exchange medium and the water flow. The first heat-conductive adhesive has a certain fluidity, which can fill the gap between the fine gap and the irregular surface after application, ensure closer contact, reduce the thermal resistance caused by air layer, and further improve the heat conduction efficiency.

[0040] Furthermore, the edge portion 14 is provided with at least one ring of glue grooves along the circumference, and the first heat-conductive adhesive is filled in the glue grooves. The glue grooves provide a larger contact area for the adhesive, allowing the adhesive to be more evenly distributed, thereby enhancing the bonding strength and reliability between the two edge portions 14; through the pre-designed glue grooves, the position of the adhesive can be more easily controlled during assembly, ensuring that it is filled according to the predetermined path, avoiding overflow or deficiency, and improving the consistency and precision of assembly. The edge portion 14 can be provided with one or more rings of glue grooves to further improve the sealing of the bonding.

[0041] Referring again to Figure 2 , the heat-conducting plate 1 includes a guide portion 15, the first side of the guide portion 15 is fixedly connected or integrally formed with the edge portion 14, and the second side of the guide portion 15 extends obliquely away from the edge portion 14 and is fixedly connected or integrally formed with the main body portion 13; the guide portions 15 of two adjacent heat-conducting plates 1 are spaced apart from each other, or the second heat-conductive adhesive is filled between the guide portions 15 of two adjacent heat-conducting plates 1.

[0042] In actual application, the guide portion 15 is connected between the edge portion 14 and the main body portion 13, and the guide portion 15 extends obliquely from the edge portion 14 to the main body portion 13 to increase the distance between the edge portion 14 and the main body portion 13, which is conducive to providing an operating space for bonding the edge portion 14, and the obliquely extending guide portion 15 has a limiting effect, avoiding the flow of water flow or heat exchange medium to the edge portion 14, which affects the bonding effect of the edge portion 14; the two adjacent guide portions 15 can be spaced apart from each other, and only the edge portion 14 is bonded, which makes the operation more convenient, and the second heat-conductive adhesive can also be filled between the two adjacent guide portions 15,

[0043] Referring again to Figure 2 , the edge portion 14 extends in the horizontal direction, which allows the two edge portions 14 to be bonded in the horizontal plane, making the operation more intuitive and simple. Due to the smaller influence of gravity, the adhesive is more easily and evenly distributed, reducing the flow or dripping problems caused by gravity. Horizontal bonding can ensure that the adhesive is more evenly filled between the two surfaces, avoiding the thickness inconsistency caused by gravity, thereby improving the quality and reliability of the bonding interface.

[0044] Referring to Figure 3 , the edge portion 14 extends obliquely toward the main body portion 13 in the first direction from top to bottom. With this arrangement, the two edge portions 14 are connected by an oblique joint, which can help natural drainage, prevent moisture from accumulating at the joint interface, and reduce the risk of corrosion or joint failure caused by moisture. In addition, the oblique joint can increase the joint area, allowing the adhesive to be more evenly distributed and naturally flow to the lower part, forming a relatively flat joint layer.

[0045] Referring to Figure 4 , the heat conduction plate 1 is provided with a plurality of barrier ribs 3 along its length direction. In actual application, the heat conduction plate 1 is provided with a plurality of barrier ribs 3, which increases the surface area of the heat conduction plate 1, thereby providing more heat transfer surfaces. A larger heat exchange area means higher heat transfer efficiency. The barrier ribs 3 increase the resistance of the fluid flowing in the flow channel 16, prolong the heat exchange time of the water flow and the heat exchange medium, and thus improve the heat exchange efficiency.

[0046] In an embodiment, the barrier rib 3 includes a first protrusion 31 and a second protrusion 32, which are arranged in a V shape. The V-shaped flow channel 16 changes the flow direction of the fluid, causing more turbulent flow when the fluid flows through the V-shaped groove. Turbulent flow can increase the heat exchange efficiency between the fluid and the wall, thereby improving the overall heat exchange performance.

[0047] In an embodiment, the barrier rib 3 is wavy, and the shape of the wavy flow channel 16 increases the actual contact area between the fluid and the wall, providing more opportunities for heat exchange and improving the heat exchange capacity per unit volume.

[0048] Referring again to Figure 4 , the opening directions of the V-shaped barrier ribs 3 on the adjacent two heat conduction plates 1 are opposite.

[0049] In actual application, the flow directions in the adjacent first channel 11 and second channel 12 can be in opposite directions, so that the water flow and the heat exchange medium form a counter-flow direction, prolonging the heating time. In the corresponding first channel 11 and second channel 12, the "V" shaped barrier rib 3 is usually the same as the flow direction of the water flow or the heat exchange medium, so that it can 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 3 on the adjacent two heat conduction plates 1 are opposite, which can guide the water flow and the heat exchange medium to a certain extent, thereby prolonging the heat exchange time of the water flow and the heat exchange medium.

[0050] Referring again to Figure 2, adjacent two heat-conducting plates 1 are formed with a flow channel 16, a plurality of heat-conducting plates 1 are formed with a plurality of flow channels 16 along the first direction, the plurality of flow channels 16 are sequentially divided into odd-numbered flow channels 161 and even-numbered flow channels 162 along the first direction, the plurality of odd-numbered flow channels 161 are in communication with each other, the plurality of even-numbered flow channels 162 are in communication with each other, and the odd-numbered flow channels 161 and the even-numbered flow channels 162 are isolated from each other; the odd-numbered flow channels 161 can be one of the first channels 11 and the second channels 12, and the even-numbered flow channels 162 can be the other one of the first channels 11 and the second channels 12.

[0051] In actual application, a plurality of heat-conducting plates 1 are formed with a plurality of flow channels 16 along the first direction, the plurality of flow channels 16 are sequentially divided into odd-numbered flow channels 161 and even-numbered flow channels 162 along the first direction, the odd-numbered flow channels 161 are, for example, the first, third, and the like flow channels 16, and the even-numbered flow channels 162 are, for example, the second, fourth, and the like flow channels 16; the odd-numbered flow channels 161 can be the second channels 12, and the even-numbered flow channels 162 can be the first channels 11; in this way, the opposite sides of each first channel 11 are heated by the second channels 12 on both sides, effectively saving the heating time of the water flow in the first channels 11 and improving the hot water output speed of the water supply device.

[0052] Again referring to Figure 2 , the plate heat exchanger is provided with a first flow guide channel 171 and a second flow guide channel 181 penetrating each flow channel 16, and the plate heat exchanger includes a sealing member 2, which is used to seal all odd-numbered flow channels 161 in the first flow guide channel 171, and the sealing member 2 is used to seal all even-numbered flow channels 162 in the second flow guide channel 181.

[0053] In actual application, since the heat exchange medium is mainly used to heat the water flow, and the water flow needs to flow out of the water supply device for direct use by users, in order to avoid the heat exchange medium and the water flow from mixing together and affecting the safety of the users' use of water, the second channels 12 and the first channels 11 need to be spaced apart from each other. In an embodiment, the plate heat exchanger is provided with a first flow guide channel 171 and a second flow guide channel 181 penetrating each heat-conducting plate 1; if the first flow guide channel 171 is connected with an external water source (or a water inlet pipeline), the first flow guide channel 171 is a channel through which the water flow enters, and therefore all odd-numbered flow channels 161 in the first flow guide channel 171 need to be sealed, allowing only the water flow to enter the even-numbered flow channels 162 from the first flow guide channel 171; if the second flow guide channel 181 is connected with a heat tank, the second flow guide channel 181 is a channel through which the heat exchange medium enters, and therefore all even-numbered flow channels 162 in the second flow guide channel 181 need to be sealed, allowing only the heat exchange medium to enter the odd-numbered flow channels 161 from the second flow guide channel 181.

[0054] In this way, the odd layer flow channel 161 and the even layer flow channel 162 can be isolated from each other, and the water flow and the heat exchange medium do not affect each other, ensuring the safety of the user's drinking water (water), and the structure of the plate heat exchanger is simpler, reducing the production difficulty of the plate heat exchanger and improving the production efficiency.

[0055] The first flow guide channel 171 and the first group of interfaces 17 are communicated, so that the water flow enters the first channel 11, and the second flow guide channel 181 and the second group of interfaces 18 are communicated, so that the heat exchange medium enters the second channel 12.

[0056] Compared with the prior art, the plate heat exchanger and the water supply device provided by the embodiment of the present application have the following advantages: the plate heat exchanger comprises a heat exchanger main body, the heat exchanger main body comprises a plurality of heat conduction plates 1, the plurality of heat conduction plates 1 are arranged in sequence along a first direction of the plate heat exchanger, along the first direction, first channels 11 and second channels 12 are alternately formed between adjacent heat conduction plates 1, the first channels 11 and the second channels 12 are isolated from each other, and the edge portions 14 of the adjacent two heat conduction plates 1 are bonded. Compared with the prior art, the plate heat exchanger of the present application adopts the structure of a plurality of heat conduction plates 1, the plurality of heat conduction plates 1 are stacked in a stacked manner and bonded to each other, the bonding manner is simple to operate and does not cause damage to the heat conduction plates 1, and the heat conduction plates 1 have reusability; and the first channels 11 and the second channels 12 formed by the plurality of heat conduction plates 1 have a large cross-sectional area, so that the contact area of the first channels 11 and the second channels 12 is increased, the heat conduction efficiency is improved, and the plurality of heat conduction plates 1 are arranged in sequence along the first direction, so that the length of the first channels 11 and the second channels 12 along the first direction is small, the flow rate per unit area of the water flow in the first channels 11 is small, and the water flow can quickly absorb the heat of the heat exchange medium, thereby improving the heat exchange efficiency.

[0057] The above description is only a specific embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the present application.

Claims

1. A plate heat exchanger, characterized in that The plate heat exchanger comprises a heat exchanger body, the plate heat exchanger body comprises a plurality of heat-conducting plates (1), the plurality of heat-conducting plates (1) are arranged in sequence along a first direction of the plate heat exchanger, first channels (11) and second channels (12) are alternately formed between each adjacent heat-conducting plate (1), the first channels (11) and the second channels (12) are isolated from each other, and edge portions (14) of two adjacent heat-conducting plates (1) are bonded.

2. The plate heat exchanger according to claim 1, characterized in that The heat-conducting plate (1) comprises a main body portion (13) and the edge portion (14), the edge portion (14) is connected to the outer periphery of the main body portion (13), the main body portions (13) of the plurality of heat-conducting plates (1) are arranged at intervals to form the first channels (11) or the second channels (12); and the edge portions (14) of adjacent heat-conducting plates (1) are stacked and bonded together.

3. The plate heat exchanger according to claim 2, characterized in that The plate heat exchanger comprises first heat-conducting glue, the first heat-conducting glue is filled between the edge portions (14) of two adjacent heat-conducting plates (1).

4. The plate heat exchanger according to claim 2, characterized in that The heat-conducting plate (1) comprises a guide portion (15), a first side of the guide portion (15) is fixedly connected or integrally formed with the edge portion (14), a second side of the guide portion (15) extends obliquely away from the edge portion (14) and is fixedly connected or integrally formed with the main body portion (13); the guide portions (15) of two adjacent heat-conducting plates (1) are arranged at intervals, or the guide portions (15) of two adjacent heat-conducting plates (1) are filled with second heat-conducting glue.

5. The plate heat exchanger according to claim 4, characterized in that The edge portion (14) extends in a horizontal direction, or the edge portion (14) extends obliquely towards the main body portion (13) from top to bottom along the first direction.

6. The plate heat exchanger according to any of the claims 1-5, characterized in that The first channels (11) and the second channels (12) are each provided with at least two, each first channel (11) and each second channel (12) are arranged alternately; the plate heat exchanger body is provided with a first group of interfaces (17) and a second group of interfaces (18), the first group of interfaces (17) communicates with the first channels (11), and the second group of interfaces (18) communicates with the second channels (12).

7. The plate heat exchanger according to claim 3, characterized in that The edge portion (14) is provided with at least one ring of glue grooves in the circumferential direction, and the first heat-conducting glue is filled in the glue grooves.

8. The plate heat exchanger according to any of the claims 1-5, characterized in that The heat-conducting plate (1) is provided with a plurality of barrier ribs (3) along the length direction, the barrier rib (3) comprises a first protruding rib (31) and a second protruding rib (32), and the first protruding rib (31) and the second protruding rib (32) are arranged in a V shape; or the barrier rib (3) is in a wave shape.

9. The plate heat exchanger according to claim 8, characterized in that The opening directions of the V-shaped barrier ribs (3) on two adjacent heat-conducting plates (1) are opposite.

10. A water supply device characterized by comprising: The plate heat exchanger comprises the plate heat exchanger and a hot tank according to any one of claims 1-9, and the hot tank communicates with the second channels (12).

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