Waterway with true boiling instant heating system and water dispenser

Abstract

The utility model belongs to the technical field of water purification equipment, and discloses a waterway with a true boiling instant heating system and a water dispenser. The water path comprises a first-stage heating module and a quick cooling module, the input end of the first-stage heating module is provided with a water supply pipeline, the output end of the first-stage heating module is provided with a first-stage water outlet pipeline, the first-stage water outlet pipeline is provided with a first pressure adjusting piece so as to adjust the hydraulic pressure of the first-stage heating module, and the quick cooling module is arranged on the first-stage water outlet pipeline and used for preparing boiled water into cold boiled water. In addition, the water dispenser applies the waterway. Compared with the prior art, the water path is provided with the first-stage heating module and is combined with the pressure regulating piece, so that water cannot boil when being heated to 100 DEG C by the heating module, sterilization can be more thorough, and the safety of drinking water is improved. In addition, the water dispenser is provided with the quick cooling module, so that boiled water can be quickly blended into cold boiled water.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a water circuit and a water dispenser with a true boiling instant heating system. Background Art

[0002] The desktop water purifiers currently on the market generally face a technical challenge when providing instant heating functions: due to the physical characteristics and technical limitations of the instant heating system itself, it is difficult for such devices to directly heat hot water to the boiling point (i.e. 100°C) before discharging water. Although some advanced desktop water purifiers use innovative heating technologies to try to increase the outlet water temperature, the outlet water temperature is usually still only close to the boiling point rather than actually reaching it. This not only affects the user's drinking experience, especially in situations where hot water is needed for making tea or coffee, but more importantly, from a hygiene and safety perspective, incompletely boiling water may not be able to completely kill bacteria and viruses in the water.

[0003] In addition, in terms of making boiled water, the desktop water purifiers on the market currently generally use two methods: one is to directly output the tap water after filtering. Although this method removes impurities in the water, it does not go through the heating and sterilization steps. The bacteria that may exist in the water may still pose a threat to the health of the user; the second is to heat the filtered water and then pass it through the temperature of the cooling device. Although this method has an additional heating step compared to the former, the sterilization effect is still not thorough enough because the heating temperature does not reach the boiling point, and the cooling efficiency is low.

[0004] Therefore, in view of the above problems, it is necessary to improve and optimize the instant heating system of the desktop water purifier so that it can heat water to 100°C and improve its cooling efficiency. Summary of the invention

[0005] The first invention purpose of the utility model is to solve the problem that the existing desktop water purifier is difficult to heat the water temperature to 100°C and has low cooling efficiency, and to provide a water circuit with a true boiling instant heating system that can be applied to the desktop water purifier.

[0006] In order to achieve the above invention objectives, the utility model adopts the following technical solutions:

[0007] The water circuit with a true boiling instant heating system includes a primary heating module and a quick cooling module. The input end of the primary heating module is configured with a water supply pipeline, and the output end is configured with a primary water outlet pipeline. The primary water outlet pipeline is provided with a first pressure regulating component to adjust the hydraulic pressure of the primary heating module. The quick cooling module is arranged on the primary water outlet pipeline and is used to adjust boiling water into cold boiled water.

[0008] The water circuit of the utility model can be applied to desktop water purifiers. By setting a first-level heating module and combining a pressure regulating part, the hydraulic pressure in the heating module can be conveniently adjusted. When the hydraulic pressure in the first-level heating module is adjusted to be greater than the atmospheric pressure by the first pressure regulating part, the boiling point in the first-level heating module can be greater than 100°C, so that the heating module will neither boil nor produce excessive water vapor when heating water to 100°C. Due to the reduction of water vapor, a better water output effect can be achieved, and sterilization can be more thoroughly performed, thereby improving the safety of drinking water. In addition, the utility model is provided with a quick cooling module, which can quickly adjust boiling water into cold boiled water.

[0009] Preferably, the quick cooling module is an instant heating element, wherein a heat exchange channel is provided in the instant heating element, and the heat exchange channel is connected to the primary water outlet pipeline, so that boiling water exchanges heat with the instant heating element when passing through the heat exchange channel, thereby cooling down. Alternatively, the quick cooling module is a refrigerator.

[0010] Alternatively, the above-mentioned rapid cooling module includes a first heat exchange channel and a second heat exchange channel, wherein the first heat exchange channel is arranged on the water supply pipeline, and the second heat exchange channel is arranged on the first-level water outlet pipeline, so that the normal temperature water in the water supply pipeline and the boiling water in the first-level water outlet pipeline are heat-exchanged, thereby adjusting the boiling water into cold boiled water. Compared with the above scheme, the normal temperature water in the water supply pipeline and the boiling water on the first water outlet pipeline exchange heat in the rapid cooling module, so that the hot water prepared by the first-level heating module is quickly cooled into cold boiled water, and the normal temperature water is preheated and then heat-exchanged through the first-level heating module, which can improve the heating rate, shorten the heating time and reduce the heating energy consumption.

[0011] Furthermore, it also includes a secondary heating module, the input end of which is connected to the primary water outlet pipeline, and the output end of which is provided with a secondary water outlet pipeline, and the secondary water outlet pipeline is provided with a second pressure regulating member to adjust the hydraulic pressure in the secondary heating module. This solution adds a design of a secondary heating module, which can heat the cold boiled water produced by the heat exchange of the quick cooling module into hot water, and the output end of the secondary heating module is provided with a pressure regulating member, which can adjust the hydraulic pressure in the secondary heating module according to the required water outlet temperature to achieve water outlet requirements of different temperatures.

[0012] Furthermore, the second pressure regulating member is an electric pressure regulating valve with an adjustable water outlet aperture. In this solution, by using a pressure regulating valve with an adjustable water outlet aperture, more precise control of the hydraulic pressure in the secondary heating module can be achieved. This pressure regulating valve can adjust the water outlet aperture as needed, thereby changing the flow rate and pressure of the fluid, so that the system can maintain stable hydraulic pressure under different working conditions. When high boiling point heating is required, the water outlet aperture of the pressure regulating valve can be reduced to increase the hydraulic pressure, thereby increasing the boiling point of the water; when high boiling point heating is not required, the water outlet aperture can be increased to reduce the hydraulic pressure to save energy and improve heating efficiency.

[0013] Furthermore, a second electromagnetic valve is provided on the secondary water outlet pipeline, and the second pressure regulating component and the second electromagnetic valve are connected in series. In this solution, the second pressure regulating component and the second electromagnetic valve are respectively used to control the flow rate and on-off of the secondary water outlet pipeline.

[0014] Furthermore, the first pressure regulating component is a one-way valve. In this solution, when the temperature of the first-stage heating module does not reach 100°C, the pressure regulating component closes the water outlet of the first-stage heating module, thereby increasing the internal pressure of the first-stage heating module. Of course, the pressure regulating component can also adopt a flow limiting valve, a flow regulating valve, a throttle valve, a reducer and a pressure relief valve, etc., to control the flow at the water outlet, thereby controlling the hydraulic pressure in the heating module to be greater than the atmospheric pressure.

[0015] Further, the rapid cooling module includes an outer shell and a heat exchange tube, the heat exchange tube includes an outer tube and an inner tube nested inside and outside, the outer shell is provided with an installation cavity, a plurality of the heat exchange tubes are arranged side by side in the installation cavity, the inner tubes of the heat exchange tubes are connected end to end in sequence to form the second heat exchange channel, one side of the outer shell connects the first heat exchange channel with the first input port and the first output port of the outside, and the other side is provided with a second input port and a second output port connecting the second heat exchange channel with the outside. In this scheme, the first heat exchange channel is connected to the outside through one side of the outer shell for the input and output of normal temperature water; the second heat exchange channel is connected to the outside through the other side of the outer shell for the input and output of boiling water, and the heat exchange tube adopts the design of outer tube and inner tube nested inside and outside to form an efficient heat exchange structure. The fluid in the inner tube can exchange heat with the fluid between the outer tube and the outer shell through the tube wall. In addition, the inner and outer tubes are respectively connected end to end to form a heat exchange channel, so that the fluid forms a round trip flow in the installation cavity, which increases the residence time of the fluid in the heat exchange tube, thereby improving the heat exchange efficiency.

[0016] Furthermore, the two opposite outer sides of the installation cavity are provided with end covers, and the end covers are provided with a first reversing groove and a second reversing groove that are isolated from each other. One end of the adjacent outer tubes is connected through the first reversing groove, and the other end is relatively closed. One end of the adjacent inner tubes is connected through the second reversing groove, and the other end is closed. This solution connects one end of two adjacent outer tubes or inner tubes through the reversing groove to achieve reciprocating flow of the fluid in the installation cavity. The other ends of the outer tube and the inner tube are relatively closed, ensuring that the fluid is reversed at the reversing groove instead of flowing out directly, and ensuring that the fluid in the tube passes through each tube in turn. The end cover not only provides the function of fluid reversal, but also plays a role in structural support and sealing, ensuring the stability and sealing of the heat exchange system.

[0017] Furthermore, the end cover includes a slot cover and a plate cover that are sealed and covered with each other, the reversing slot is a groove formed on one side of the slot cover, and the plate cover is arranged on the side of the slot cover with the groove to seal the groove to form the first reversing slot and the second reversing slot; the other side of the slot cover is connected to a plurality of heat exchange tubes, and a first interface connecting the first reversing slot and the outer tube, and a second interface connecting the second reversing slot and the inner tube are arranged at corresponding positions. This scheme is a specific structural design of the end cover, in which the end cover forms the first reversing slot and the second reversing slot through the slot cover and the plate cover.

[0018] Furthermore, a sealing connection ring is included, and the ends of the outer tube and the inner tube are connected and fixed by the sealing connection ring, and the sealing connection ring is provided with air-avoiding holes corresponding to the inner tube and the outer tube. This solution makes the connection between the heat exchange tube and the end cover fit tightly, which can improve the sealing and stability of the rapid cooling module.

[0019] Furthermore, the inner tube is located in the middle of the outer tube, and the distance between the inner tube wall and the outer tube wall is the same. This solution makes the flow rate and flow rate of cold water passing through the inner tube the same, so that the cooling effect of the cold water is evenly applied to the hot water.

[0020] Another object of the present invention is to provide a water dispenser, which is provided with the water path of the above solution, and thus has all the advantages of the above solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a system block diagram of the waterway of the utility model;

[0022] Figure 2 It is the overall schematic diagram of the rapid cooling module;

[0023] Figure 3 It is the structural exploded diagram of the quick cooling module;

[0024] Figure 4 is a cross-sectional view of the rapid cooling module.

[0025] Description of labels:

[0026] Primary heating module 1, secondary heating module 2, water supply pipeline 3, pure water tank 31, water pump 32, filter pipeline 33, self-priming pump 335, PPC composite filter element 331, RO membrane filter element 332, raw water tank 334, wastewater discharge pipeline 34, first solenoid valve 35, one-way valve 36, primary water outlet pipeline 4, first pressure regulating component 41, secondary water outlet pipeline 5, second solenoid valve 51, second pressure regulating component 52, water outlet nozzle 53, quick cooling module 6, outer shell 61, first input port 611, first output port 612, second input port 613, second output port 614, heat exchange tube 62, outer tube 621, inner tube 622, installation cavity 63, end cover 64, slot cover 641, plate cover 642, groove 643, first interface 644, second interface 645, sealing connection ring 646. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is further described below according to the accompanying drawings:

[0028] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by “up”, “down”, “left”, “right”, “horizontal”, “inside”, “outside”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] Embodiment 1:

[0030] See also Figure 1-4 As shown, the utility model discloses a water circuit with a true boiling instant heating system, including a primary heating module 1 and a quick cooling module 6, wherein the input end of the primary heating module 1 is provided with a water supply pipeline 3, and the output end is provided with a primary water outlet pipeline 4, wherein the primary water outlet pipeline 4 is provided with a first pressure regulating member 41 to adjust the hydraulic pressure of the primary heating module 1, and the quick cooling module 6 is arranged on the primary water outlet pipeline 4 to adjust boiling water into cold boiled water.

[0031] To meet different water outlet temperature requirements, the above-mentioned water circuit also includes a secondary heating module 2. The input end of the secondary heating module 2 is connected to the primary water outlet pipeline, and its output end is configured with a secondary water outlet pipeline. The secondary water outlet pipeline is provided with a second pressure regulating component 52 to adjust the hydraulic pressure in the secondary heating module 2.

[0032] The above-mentioned first-level heating module 1 and second-level heating module 2 are both instant heating modules.

[0033] In order to achieve more precise control of the hydraulic pressure in the secondary heating module 2, the second pressure regulating member 52 is an electric pressure regulating valve with an adjustable water outlet aperture. By using the pressure regulating valve 52 with an adjustable water outlet aperture, the pressure regulating valve 52 can adjust the water outlet aperture as needed, thereby changing the flow rate and pressure of the fluid, so that the system can maintain stable hydraulic pressure under different working conditions. When high boiling point heating is required, the water outlet aperture of the pressure regulating valve 52 can be reduced to increase the hydraulic pressure, thereby increasing the boiling point of the water; when high boiling point heating is not required, the water outlet aperture can be increased to reduce the hydraulic pressure, so as to save energy and improve heating efficiency.

[0034] The electric regulating valve is driven by a motor to accurately adjust the opening of the valve according to the instructions of the system, thereby achieving accurate control of the flow rate on the secondary water outlet pipeline.

[0035] The secondary water outlet pipeline 5 is provided with a second solenoid valve, and the second pressure regulating member 52 and the second solenoid valve are connected in series in sequence, and are used to control the flow rate and on-off of the secondary water outlet pipeline 5 respectively.

[0036] The output end of the secondary water outlet pipeline 5 is provided with a water outlet nozzle 53 .

[0037] The first pressure regulating member 41 is a one-way valve. When the temperature of the first-stage heating module 1 does not reach 100° C., the pressure regulating member closes the water outlet of the first-stage heating module 1, thereby increasing the internal pressure of the first-stage heating module 1.

[0038] Of course, the first pressure regulating component can also adopt a flow limiting valve, a flow regulating valve, a throttle valve, a reducer and a pressure relief valve, etc., by controlling the flow at the water outlet, thereby controlling and heating the hydraulic pressure in the module to make it greater than the atmospheric pressure.

[0039] The water supply pipeline 3 is provided with a pure water tank 31 and a water pump 32 . The water supply pipeline 3 is controlled by the water pump 32 to transport the water in the pure water tank 31 to the primary heating module 1 .

[0040] The above-mentioned pure water tank 31 is also connected to a filter pipeline 33, the input end of the filter pipeline 33 is connected to a tap water source, and the output end is connected to the pure water tank 31. The filter pipeline 33 is provided with a self-priming pump 335, a PPC composite filter element 331, and an RO membrane filter element 332 in sequence from the input end to the output end. The RO membrane filter element 332 is provided with a wastewater discharge end, and the wastewater discharge end is equipped with a wastewater discharge pipeline 34.

[0041] The wastewater discharge pipeline 34 is provided with a first solenoid valve 35 and a one-way valve 36 , and the filtered water produced by the filtering pipeline 33 is discharged through the wastewater discharge pipeline 34 .

[0042] A raw water tank 334 is provided at the input end of the filtering pipeline 33. The raw water tank 334 is provided with two water tanks, which are used to hold tap water and waste water respectively.

[0043] The above-mentioned quick cooling module is an instant heating element (not shown in the figure), and a heat exchange channel is provided in the instant heating element, and the heat exchange channel is connected to the first-level water outlet pipe 4, so that boiling water exchanges heat with the instant heating element when passing through the heat exchange channel, thereby cooling down. In this scheme, the quick cooling module can be set as an instant heating element made of instant heating material as a whole, or an instant heating element whose inner wall of the heat exchange channel is made of instant heating material.

[0044] Of course, the quick cooling module 6 can also be configured as a refrigerator (not shown). The specific structure of the refrigerator can apply the existing refrigerator structure solution, such as the existing semiconductor refrigerator.

[0045] In this embodiment, by setting the first and second heating modules 2 and combining with the pressure regulating parts, the hydraulic pressure in the heating module can be conveniently adjusted. Since when the hydraulic pressure is adjusted to be greater than the atmospheric pressure, the boiling point of water will be raised to more than 100°C, the heating module will neither boil nor produce excessive water vapor when heating the water to 100°C. Due to the reduction of water vapor, a better water outlet effect can be achieved. In addition, this embodiment is also provided with a quick cooling module 6. The normal temperature water in the water supply pipeline and the boiling water on the first water outlet pipeline exchange heat in the quick cooling module 6, so that the hot water prepared by the first heating module 1 is quickly cooled to cold boiled water, and the normal temperature water is preheated and then heat exchanged through the first heating module 1, which can increase the heating rate, shorten the heating time and reduce the heating energy consumption.

[0046] Embodiment 2:

[0047] The difference between this embodiment and the above-mentioned embodiment is that the above-mentioned rapid cooling module 6 includes a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is arranged on the water supply pipeline 3, and the second heat exchange channel is arranged on the first-level water outlet pipeline 4, so that the normal temperature water in the water supply pipeline 3 and the boiling water in the first-level water outlet pipeline 4 can be heat exchanged, thereby adjusting the boiling water into cold boiled water.

[0048] See also Figure 2-4As shown, the above-mentioned rapid cooling module 6 includes an outer shell 61 and a heat exchange tube 62. The heat exchange tube 62 includes an outer tube 621 and an inner tube 622 which are nested inside and outside. An installation cavity 63 is provided in the outer shell 61. A plurality of heat exchange tubes 62 are arranged side by side in the installation cavity 63. The inner tubes 622 of the heat exchange tubes 62 are connected end to end in sequence to form a second heat exchange channel. One side of the outer shell 61 connects the first heat exchange channel with the first input port 611 and the first output port 612 of the outside, and the other side is provided with a second input port 613 and a second output port 614 which connect the second heat exchange channel with the outside. Among them, the first heat exchange channel is used for the input and output of normal temperature water; the second heat exchange channel is used for the input and output of boiling water through the outer shell 61. The heat exchange tube 62 adopts the design of the outer tube 621 and the inner tube 622 which are nested inside and outside, forming an efficient heat exchange structure. The fluid in the inner tube 622 can exchange heat with the fluid between the outer tube 621 and the outer shell 61 through the tube wall. In addition, the inner and outer tubes 621 are connected end to end to form a heat exchange channel, so that the fluid forms a reciprocating flow in the installation cavity 63, which increases the residence time of the fluid in the heat exchange tube 62, thereby improving the heat exchange efficiency.

[0049] The two opposite outer sides of the installation cavity 63 are provided with end covers 64, and the end covers 64 are provided with a first reversing groove and a second reversing groove that are isolated from each other. One end of the adjacent outer tubes 621 is connected through the first reversing groove, and the other end is relatively closed. One end of the adjacent inner tubes 622 is connected through the second reversing groove, and the other end is closed. The reversing groove is used to connect one end of the two adjacent outer tubes 621 or inner tubes 622, so that the fluid in the installation cavity 63 is reversed to form a round-trip flow. The other ends of the outer tube 621 and the inner tube 622 are relatively closed, ensuring that the fluid is reversed at the reversing groove instead of flowing out directly, and ensuring that the fluid in the tube passes through each tube in turn. The end cover 64 not only provides the function of fluid reversal, but also plays a role in structural support and sealing, ensuring the stability and sealing of the heat exchange system.

[0050] The end cover 64 includes a slot cover 641 and a plate cover 642 which are sealed and covered with each other. The reversing slot is a groove 643 formed on one side of the slot cover 641. The plate cover 642 is provided on the side of the slot cover 641 provided with the groove 643 to seal the groove 643 to form a first reversing slot and a second reversing slot. The other side of the slot cover 641 is connected to a plurality of heat exchange tubes 62, and a first interface 644 connecting the first reversing slot and the outer tube 621, and a second interface 645 connecting the second reversing slot and the inner tube 622 are provided at corresponding positions. This scheme is a specific structural design of the end cover 64. In this scheme, the end cover 64 forms the first reversing slot and the second reversing slot through the slot cover 641 and the plate cover 642.

[0051] The ends of the outer tube 621 and the inner tube 622 and the groove cover 641 are connected and fixed by a sealing connection ring 646. The sealing connection ring 646 is provided with air avoidance holes corresponding to the inner tube 622 and the outer tube 621, so that the connection between the heat exchange tube 62 and the end cover 64 is tightly fitted, which can improve the sealing and stability of the quick cooling module 6.

[0052] The inner tube 622 is located in the middle of the outer tube 621, and the distance between the inner tube wall and the outer tube wall is the same, so that the flow rate and flow rate of cold water passing through the inner tube 622 are the same, so that the cooling effect of the cold water is evenly applied to the hot water.

[0053] In order to improve the convenience of installation, disassembly and maintenance of the quick cooling module 6, the slot cover 641 at at least one end is detachably connected to the outer shell 61.

[0054] Embodiment three:

[0055] This embodiment discloses a water dispenser (not shown), which is provided with the water path of the first embodiment or the second embodiment. Compared with the prior art, the boiling point of the water dispenser of this embodiment can exceed 100°C, so that the heating temperature can reach 100°C, thereby improving the safety of drinking water, and by providing the quick cooling module 6, the cooling energy consumption of the machine body is low and the efficiency is high.

[0056] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. According to the disclosure and teaching of the above specification, technicians in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A water circuit with a true boiling instant heating system, characterized in that: The invention comprises a primary heating module (1) and a quick cooling module (6); the input end of the primary heating module (1) is provided with a water supply pipeline (3), and the output end is provided with a primary water outlet pipeline (4); the primary water outlet pipeline (4) is provided with a first pressure regulating component (41) for regulating the hydraulic pressure of the primary heating module (1); the quick cooling module (6) is arranged on the primary water outlet pipeline (4) for adjusting boiling water into cold boiled water.

2. The waterway according to claim 1, characterized in that: The rapid cooling module (6) comprises a first heat exchange channel and a second heat exchange channel, wherein the first heat exchange channel is arranged on the water supply pipeline (3), and the second heat exchange channel is arranged on the primary water outlet pipeline (4), so that the normal temperature water in the water supply pipeline (3) and the boiling water in the primary water outlet pipeline (4) can exchange heat, thereby adjusting the boiling water into cold boiled water.

3. The waterway according to claim 1, characterized in that: The quick cooling module is an instant heating element, and a heat exchange channel is provided in the instant heating element, and the heat exchange channel is connected to the first-level water outlet pipeline (4); Alternatively, the rapid cooling module is a refrigerator.

4. The waterway according to claim 1, characterized in that: It also includes a secondary heating module (2), the input end of the secondary heating module (2) is connected to the primary water outlet pipeline (4), and the output end is provided with a secondary water outlet pipeline (5), and the secondary water outlet pipeline (5) is provided with a second pressure regulating component (52) to adjust the hydraulic pressure in the secondary heating module (2).

5. The waterway according to claim 1, characterized in that: The first pressure regulating component (41) is a one-way valve; or the first pressure regulating component (41) is any one of a flow limiting valve, a flow regulating valve, a throttle valve, a reducer and a pressure relief valve.

6. The waterway according to claim 4, characterized in that: The second pressure regulating component (52) is an electric pressure regulating valve with an adjustable water outlet aperture.

7. The waterway according to claim 1, characterized in that: The rapid cooling module (6) comprises an outer shell (61) and a heat exchange tube (62), wherein the heat exchange tube (62) comprises an outer tube (621) and an inner tube (622) which are nested inside and outside, wherein an installation cavity (63) is provided inside the outer shell (61), wherein a plurality of the heat exchange tubes (62) are arranged side by side in the installation cavity (63), wherein the inner tubes (622) of the heat exchange tubes (62) are connected end to end in sequence to form a second heat exchange channel, wherein one side of the outer shell (61) is provided with a first input port (611) and a first output port (612) which connect the first heat exchange channel with the outside, and the other side thereof is provided with a second input port (613) and a second output port (614) which connect the second heat exchange channel with the outside.

8. The waterway according to claim 7, characterized in that: The installation cavity (63) is provided with end covers (64) on two opposite outer sides, and the end covers (64) are provided with a first reversing groove and a second reversing groove isolated from each other, one end of the adjacent outer tubes (621) is connected through the first reversing groove, and the other end is relatively closed, and one end of the adjacent inner tubes (622) is connected through the second reversing groove, and the other end is closed.

9. The waterway according to claim 8, characterized in that: The end cover (64) comprises a slot cover (641) and a plate cover (642) which are sealed and covered with each other; the first reversing slot and the second reversing slot are grooves (643) formed on one side of the slot cover (641); the plate cover (642) is arranged on the side of the slot cover (641) where the groove (643) is provided to seal the groove (643) to form the first reversing slot and the second reversing slot; the other side of the slot cover (641) is connected to a plurality of heat exchange tubes (62), and a first interface connecting the first reversing slot and the outer tube (621) and a second interface connecting the second reversing slot and the inner tube (622) are provided at corresponding positions.

10. A water dispenser, characterized in that: The water dispenser is provided with a water channel according to any one of claims 1-9.

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