Water dispenser

Abstract

The utility model relates to drinking water machine technical field provides a drinking water machine, and it aims at solving the problem that the water of higher temperature caused by the water expansion of the hot tank heating of existing drinking water machine returns to the cold tank and seriously influences the water temperature in the cold tank. For this purpose, the drinking water machine of the utility model includes the cold tank and the hot tank, is provided with the water distribution board in the cold tank, the first cavity and the second cavity located above and below the water distribution board, the second cavity is equipped with refrigeration element, the hot tank is equipped with heating element, the bottom of hot tank is provided with the water inlet hole, and the first cavity and water inlet hole keep intercommunication through the water inlet pipeline. Through the above -mentioned setting, can reduce the influence of water reflux on the water temperature in the cold tank when the hot tank heats, optimizes the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of water dispenser technology, and specifically provides a water dispenser. Background Technology

[0002] With the general improvement of people's living standards, water dispensers have become one of the essential appliances in most households. Typically, a water dispenser has a hot water tank and a cold water tank, used to heat and cool water respectively, to provide users with hot and cold water. The cold water tank is connected to the water source via an inlet pipe, while the side of the hot water tank is connected to the space above the water distribution plate inside the cold water tank via another inlet pipe, allowing for automatic water replenishment to both tanks through a simple piping system.

[0003] Because the water temperature near the outlet of the inlet pipe in the hot tank is very high, the original water in the inlet pipe is in direct or indirect thermal contact with this portion of water, resulting in a relatively high temperature for the original water in the inlet pipe. During the heating process, the water in the hot tank expands after being heated, causing water near the outlet of the inlet pipe to enter the inlet pipe and force water from the inlet pipe into the cold tank. Some of the water squeezed out of the hot tank may even flow back into the cold tank. This severely affects the water temperature in both the ambient and cold water zones of the cold tank, causing a significant increase in the temperature of the water in both zones. This results in a poor user experience and increases the energy consumption of the cold tank in lowering the water temperature.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] This utility model aims to solve the above-mentioned technical problem, namely, the problem that when the hot tank of an existing water dispenser heats water, the expansion of the water causes the high-temperature water to flow back into the cold tank, which seriously affects the water temperature in the cold tank. This utility model provides a water dispenser, which includes a cold tank and a hot tank. The cold tank is provided with a water distribution plate, a first cavity and a second cavity located above and below the water distribution plate. The second cavity is equipped with a cooling element. The hot tank is equipped with a heating element. The bottom of the hot tank is provided with a water inlet hole. The first cavity and the water inlet hole are connected through a water inlet pipe.

[0006] In the preferred embodiment of the above-mentioned water dispenser, a drain hole is provided at the bottom of the hot water tank, and the drain hole is connected to a drain pipe; the outlet of the drain pipe is located on the left, right, or front side of the water dispenser, and a drain valve or a removable sealing plug is provided at the outlet of the drain pipe; or the outlet of the drain pipe is located inside the internal cavity of the water dispenser, and a door capable of opening the internal cavity is provided on the left, right, or front side of the water dispenser, and the drain pipe is equipped with a drain valve or a removable sealing plug is provided at the outlet of the drain pipe.

[0007] In the preferred embodiment of the water dispenser described above, both the drain hole and the water inlet hole are located at the bottom of the hot water tank, and the water inlet pipe and the drain pipe are connected to the drain hole via a tee fitting.

[0008] In the preferred technical solution of the above-mentioned water dispenser, the three-way fitting includes a first pipe body, a second pipe body, and a third pipe body. The first end of the first pipe body, the first end of the second pipe body, and the first end of the third pipe body are connected to each other. The outlet end of the water inlet pipe is connected to the second end of the first pipe body through a first flexible pipe. The second end of the second pipe body is connected to the inlet and outlet holes through a second flexible pipe. The third pipe body is connected to or constitutes the drain pipe.

[0009] In the preferred embodiment of the water dispenser described above, the portion where the first tube body is connected to the first flexible tube is provided with a first anti-detachment structure; and / or the portion where the second tube body is connected to the second flexible tube is provided with a second anti-detachment structure.

[0010] In the preferred embodiment of the above-mentioned water dispenser, the water dispenser includes a housing, a partition is provided inside the housing, and a third cavity and a fourth cavity are respectively located above and below the partition. The cold tank and the hot tank are both disposed in the third cavity. The partition has a non-circular hole. At least the section of the third tube near its second end matches the shape and size of the non-circular hole. The second end of the third tube passes through the non-circular hole from the third cavity to the fourth cavity.

[0011] In the preferred embodiment of the water dispenser described above, the outlet of the drain pipe is located in the fourth cavity, and the fourth cavity is equipped with the door.

[0012] In the preferred embodiment of the water dispenser described above, a drainage indicator is provided on the door or the housing near the door.

[0013] In the preferred embodiment of the water dispenser described above, a buffer plate is provided above the water inlet.

[0014] In the preferred embodiment of the water dispenser described above, the heating element is a heating tube disposed inside the hot tank; and / or the top of the hot tank is provided with an exhaust port, which is connected to the exhaust pipe of the cold tank through an exhaust pipe.

[0015] When the above technical solution is adopted, the water dispenser includes a cold tank and a hot tank. The cold tank is provided with a water distribution plate, a first cavity and a second cavity located above and below the water distribution plate. The second cavity is equipped with a cooling element. The hot tank is equipped with a heating element. The bottom of the hot tank is provided with a water inlet hole. The first cavity and the water inlet hole are connected through a water inlet pipe.

[0016] Because water density decreases with increasing temperature, during the heating process in a hot water tank, the water at higher temperatures rises due to its lower density, while the water at lower temperatures sinks due to its higher density. This results in stratification of the water in the hot water tank, with the uppermost layer having the highest temperature and the lowermost layer having the lowest temperature.

[0017] With the above setup, when the hot tank heats the water inside, the water at the bottom of the hot tank is forced into the inlet pipe. The water already in the inlet pipe is forced back into the cold tank. Since the water in the inlet pipe is in direct or indirect contact with the water at the bottom of the hot tank, and the water temperature in the inlet pipe is relatively low, the backflow of water from the inlet pipe has a minimal impact on the water temperature in the cold tank. Even if some of the water from the bottom of the hot tank flows back into the cold tank, its temperature is lower than that of the other water layers in the hot tank, so its impact on the water temperature in the cold tank is also relatively small. Therefore, this setup reduces the impact of water backflow during hot tank heating on the water temperature in the cold tank, optimizing the user experience. When the cold tank is taller than the hot tank, placing the hot tank's inlet at the bottom and further increasing the length of the hot tank's inlet pipe further reduces the risk of water flowing back into the cold tank through the inlet pipe, thus more effectively reducing the impact of water backflow during hot tank heating on the water temperature in the cold tank.

[0018] Preferably, the bottom of the hot water tank is provided with a drain hole, which is connected to a drain pipe; the outlet of the drain pipe is located on the left, right or front side of the water dispenser, and a drain valve or a removable sealing plug is provided at the outlet of the drain pipe; or the outlet of the drain pipe is located inside the internal cavity of the water dispenser, and a door that can open the internal cavity is provided on the left, right or front side of the water dispenser, and the drain pipe is equipped with a drain valve or a removable sealing plug is provided at the outlet of the drain pipe.

[0019] Because the outlet of the drain pipe of the hot water tank of existing water dispensers is located at the back of the water dispenser, and the water dispenser is usually placed against the wall, when it is necessary to drain all the water in the hot water tank, the water dispenser needs to be moved away from the wall and a water container is used to catch the water flowing out of the drain pipe outlet, which is quite troublesome.

[0020] With the above setup, when all the water in the hot water tank needs to be drained, there is no need to move the water dispenser. A water container can be used to catch the water flowing out of the drain pipe, which facilitates the draining of water from the hot water tank and makes the operation more convenient.

[0021] Preferably, both the drain hole and the water inlet hole are located at the bottom of the hot tank, and the water inlet pipe and the drain pipe are connected to the drain hole via a tee fitting.

[0022] With this design, the bottom of the hot tank has only one inlet and outlet hole, which serves as both the water inlet and outlet hole of the hot tank. This eliminates the need for two separate holes at the bottom of the hot tank, reducing the number of steps and processing costs associated with machining the openings at the bottom of the hot tank. Furthermore, the bottom of the hot tank is stronger when there is only one opening compared to when there are two openings.

[0023] Preferably, the tee includes a first pipe body, a second pipe body, and a third pipe body. The first end of the first pipe body, the first end of the second pipe body, and the first end of the third pipe body are connected to each other. The outlet end of the water inlet pipe is connected to the second end of the first pipe body through a first flexible pipe. The second end of the second pipe body is connected to the inlet and outlet holes through a second flexible pipe. The third pipe body is connected to the drain pipe or forms a drain pipe.

[0024] This setup eliminates the need for strict assembly dimensions, making it easier to assemble and connect the water inlet pipe, tee fittings, and inlet / outlet holes.

[0025] Preferably, the portion where the first tube body connects to the first flexible tube is provided with a first anti-detachment structure; and / or the portion where the second tube body connects to the second flexible tube is provided with a second anti-detachment structure.

[0026] This configuration improves the reliability of the connection between the first tube and the first flexible tube, as well as the reliability of the connection between the second tube and the second flexible tube.

[0027] Preferably, the water dispenser includes a housing, a partition is provided inside the housing, and a third cavity and a fourth cavity are respectively located above and below the partition. The cold tank and the hot tank are both disposed in the third cavity. The partition has a non-circular hole. At least the section of the third tube near its second end matches the shape and size of the non-circular hole. The second end of the third tube passes through the non-circular hole from the third cavity into the fourth cavity.

[0028] This design facilitates the positioning and fixing of the third tube and the partition.

[0029] Preferably, the outlet of the drainage pipe is located in the fourth cavity, and the fourth cavity is equipped with a door.

[0030] This design avoids exposing the drain pipe outlet outside the casing, thus preserving the overall aesthetics of the machine.

[0031] Preferably, a drainage indicator is provided on the door or housing near the door.

[0032] This setting reminds users of the location of the drain outlet, making it easier for them to quickly find the outlet and drain the hot tank.

[0033] Preferably, a buffer plate is provided above the water inlet.

[0034] By setting up a buffer plate, the flow rate of water into the hot water tank can be slowed down when water is being fed into the tank, resulting in better stratification inside the tank, making it easier for users to access hot water and optimizing the user experience. Attached Figure Description

[0035] The preferred embodiments of this utility model will now be described with reference to the accompanying drawings, in which:

[0036] Figure 1 This is a schematic diagram of the structure of a water dispenser according to one embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the heating tank part of a water dispenser according to an embodiment of the present invention;

[0038] Figure 3 This is a cross-sectional view of the heating tank portion of a water dispenser according to an embodiment of the present invention;

[0039] Figure 4 It is along Figure 3 A magnified view of part A in the middle.

[0040] List of reference numerals in the attached diagram:

[0041] 1. Shell; 11. Partition plate; 12. Third cavity; 13. Fourth cavity; 2. Cold tank; 21. Water distribution plate; 22. First cavity; 23. Second cavity; 24. Cold tank inlet pipe; 25. Cold tank outlet pipe; 26. Cold tank exhaust pipe; 3. Hot tank; 31. Hot tank inlet pipe; 32. T-joint; 321. First pipe body; 322. Second pipe body; 323. Third pipe body; 33. Hot tank drain pipe; 331. Sealing plug; 34. Hot tank outlet pipe; 35. Hot tank exhaust pipe; 36. Buffer plate; 37. Electric heating tube; 41. First flexible tube; 42. Second flexible tube. Detailed Implementation

[0042] First, those skilled in the art should understand that the embodiments described below are merely for explaining the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0043] It should be noted that in the description of the utility model, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Furthermore, it should be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Based on the problem mentioned in the background art that the expansion of water in the hot tank of existing water dispensers causes high-temperature water to flow back into the cold tank, seriously affecting the water temperature in the cold tank, this utility model provides a water dispenser. The water dispenser includes a cold tank and a hot tank. The cold tank is provided with a water distribution plate, a first cavity and a second cavity located above and below the water distribution plate. The second cavity is equipped with a cooling element. The hot tank is equipped with a heating element. A water inlet is provided at the bottom of the hot tank. The first cavity and the water inlet are connected through a water inlet pipe.

[0046] Because water density decreases with increasing temperature, during the heating process in a hot water tank, the water at higher temperatures rises due to its lower density, while the water at lower temperatures sinks due to its higher density. This results in stratification of the water in the hot water tank, with the uppermost layer having the highest temperature and the lowermost layer having the lowest temperature.

[0047] With the above setup, when the hot tank heats the water inside, the water at the bottom of the hot tank is forced into the inlet pipe. The water already in the inlet pipe is forced back into the cold tank. Since the water in the inlet pipe is in direct or indirect contact with the water at the bottom of the hot tank, and the water temperature in the inlet pipe is relatively low, the backflow of water from the inlet pipe has a minimal impact on the water temperature in the cold tank. Even if some of the water from the bottom of the hot tank flows back into the cold tank, its temperature is lower than that of the other water layers in the hot tank, so its impact on the water temperature in the cold tank is also relatively small. Therefore, this setup reduces the impact of water backflow during hot tank heating on the water temperature in the cold tank, optimizing the user experience. When the cold tank is taller than the hot tank, placing the hot tank's inlet at the bottom and further increasing the length of the hot tank's inlet pipe further reduces the risk of water flowing back into the cold tank through the inlet pipe, thus more effectively reducing the impact of water backflow during hot tank heating on the water temperature in the cold tank.

[0048] The following reference Figures 1 to 4 This article will provide a detailed introduction to the water dispenser of this utility model. Among other things, Figure 1 This is a schematic diagram of the structure of a water dispenser according to one embodiment of the present invention; Figure 2 This is a schematic diagram of the heating tank part of a water dispenser according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the heating tank portion of a water dispenser according to an embodiment of the present invention; Figure 4 It is along Figure 3 A magnified view of part A in the middle.

[0049] like Figures 1 to 4As shown, the water dispenser includes a housing 1, a cold tank 2, and a hot tank 3. The cold tank 2 contains a water distribution plate 21, a first cavity 22 located above and below the water distribution plate 21, and a second cavity 23 located below the water distribution plate 21. The second cavity 23 is equipped with a cooling element (not shown in the figure). The hot tank 3 is equipped with an electric heating element 37. The housing 1 contains a partition 11, and a third cavity 12 and a fourth cavity 13 located above and below the partition 11, respectively. Both the cold tank 2 and the hot tank 3 are located within the third cavity 12. The first cavity 22 of the cold tank 2 is connected to a water source (such as a tap water pipe, not shown in the figure) via a cold tank inlet pipe 24 at the top. The bottom of the cold tank 2 is connected to a cold tank outlet pipe 25. The first cavity 22 of the cold tank 2 is also connected to the atmosphere via a cold tank exhaust pipe 26 at the top. The bottom of the hot tank 3 is provided with inlet and outlet holes (not shown in the figure). The inlet end of the hot tank water inlet pipe 31 is connected to the first cavity 22 of the cold tank 2, and the outlet end of the hot tank water inlet pipe 31 is connected to the inlet and outlet holes at the bottom of the hot tank 3 through a tee fitting 32. The tee fitting 32 is also connected to the hot tank drain pipe 33. The top of the hot tank 3 is connected to the hot tank outlet pipe 34 and the vent hole (not shown in the figure). The vent hole is connected to the cold tank vent pipe 26 through the hot tank vent pipe 35 so that gas can be discharged through the outlet end of the cold tank vent pipe 26.

[0050] like Figure 3 and Figure 4 As shown, the tee fitting 32 includes a first pipe body 321, a second pipe body 322, and a third pipe body 323. The first ends of the first pipe body 321, the second pipe body 322, and the third pipe body 323 are connected to each other. The outlet end of the hot tank inlet pipe 31 is connected to the second end of the first pipe body 321 through a first flexible pipe 41. The second end of the second pipe body 322 is connected to the inlet and outlet holes through a second flexible pipe 42. A portion of the third pipe body 323 constitutes the hot tank drain pipe 33. The partition plate 11 has a non-circular hole (such as a waist-shaped hole). The section of the third pipe body 323 near the second section matches the shape and size of the non-circular hole. The second end of the third pipe body 323 passes through the non-circular hole from the third cavity 12 into the fourth cavity 13. A door (not shown in the figure) for opening and closing the fourth cavity 13 is provided on the front side of the housing 1. The second end of the third pipe body 323 constitutes the outlet of the hot tank drain pipe 33, and a removable sealing plug 331 is provided at the outlet. A buffer plate 36 is installed inside the hot tank 3 above the inlet and outlet holes.

[0051] Because water density decreases with increasing temperature, during the heating process in the hot tank 3, the hotter water rises due to its lower density, while the colder water sinks due to its higher density, resulting in stratification within the hot tank 3. The uppermost layer of water in the hot tank 3 has the highest temperature, and the lowermost layer has the lowest temperature. The water at the bottom of the hot tank 3 is forced into the hot tank inlet pipe 31, and the original water in the inlet pipe 31 is forced back into the cold tank 2. The original water in the inlet pipe 31 is in direct or indirect contact with the water at the bottom of the hot tank 3. Since the water temperature in the inlet pipe 31 is relatively low, the backflow of water from the inlet pipe 31 has a relatively small impact on the water temperature in the cold tank 2. Even if a portion of the water from the bottom layer flowing out of the hot tank 3 returns to the cold tank 2, its temperature is lower than that of the other water layers in the hot tank 3, thus having a relatively small impact on the water temperature in the cold tank 2. Therefore, the above-mentioned settings can reduce the impact of water backflow during heating in the hot tank 3 on the water temperature inside the cold tank 2, thus optimizing the user experience. With the cold tank 2 being taller than the hot tank 3, the water inlet of the hot tank 3 is located at its bottom, and the length of the hot tank inlet pipe 31 is further increased. This further reduces the risk of water in the hot tank 3 flowing back into the cold tank 2 through the hot tank inlet pipe 31, thereby more effectively reducing the impact of water backflow during heating in the hot tank 3 on the water temperature inside the cold tank 2.

[0052] The second end of the third pipe 323 (i.e. the outlet of the hot tank drain pipe 33) is located inside the fourth cavity 13. A door for opening and closing the fourth cavity 13 is provided on the front side of the housing 1. When it is necessary to drain the water in the hot tank 3, the door can be opened and the sealing plug 331 can be removed. This avoids the inconvenience of having to move the water dispenser away from the wall before draining water, since the outlet of the hot tank drain pipe 34 is located on the rear side of the housing 1.

[0053] The hot tank inlet pipe 31 and the hot tank drain pipe 33 are connected to the inlet and drain holes at the bottom of the hot tank 3 through a tee fitting 32. The inlet and drain holes serve as both the inlet and outlet holes of the hot tank 3, eliminating the need to set two holes at the bottom of the hot tank 3 to serve as the inlet and outlet holes respectively. This reduces the number of steps and processing costs of machining the opening at the bottom of the hot tank 3. Furthermore, the bottom of the hot tank 3 has better strength than the bottom of the hot tank 3 with one opening compared to having two openings.

[0054] The outlet end of the hot tank inlet pipe 31 is connected to the second end of the first pipe body 321 through the first flexible pipe 41, and the second end of the second pipe body 322 is connected to the inlet and outlet holes through the second flexible pipe 42. This eliminates the need for strict assembly dimensions and makes the assembly and connection between the hot tank inlet pipe 31, the tee fitting 32 and the inlet and outlet holes more convenient.

[0055] The partition 11 has a non-circular hole. The section of the third tube 323 near the second section matches the shape and size of the non-circular hole. The second end of the third tube 323 passes through the non-circular hole from the third cavity 12 into the fourth cavity 13, which facilitates the positioning and fixing of the third tube 323 and the partition 11.

[0056] A buffer plate 36 is installed above the inlet and outlet holes inside the hot water tank 3. When water enters the hot water tank 3, it can slow down the flow rate of the water into the hot water tank 3, making the stratification effect inside the hot water tank 3 better, making it easier for users to take hot water and optimizing the user experience.

[0057] Preferably, the portion connecting the first tube body 321 and the first flexible tube 41 is provided with a first anti-detachment structure (not shown in the figure), and the portion connecting the second tube body 322 and the second flexible tube 42 is provided with a second anti-detachment structure (not shown in the figure). The first and second anti-detachment structures can be annular ribs or multiple circumferentially distributed protrusions formed on the outer walls of the first tube body 321 and the second tube body 322, respectively. Preferably, both the first flexible tube 41 and the second flexible tube 42 are elastic tubes, such as rubber tubes, which facilitates the connection of the first flexible tube 41 to the first tube body 321 and the hot water inlet pipe 31 of the hot water tank, as well as the connection of the second flexible tube 42 to the second tube body 322.

[0058] Preferably, a drain indicator is provided on the door of the fourth chamber 13 to remind the user of the outlet location of the hot tank drain pipe 33, making it easy for the user to quickly find the outlet location of the hot tank drain pipe 33 and to drain the hot tank 3. It can be understood that the drain indicator can also be provided on the housing 1 near the door of the fourth chamber 13.

[0059] In another feasible embodiment, unlike the above embodiment, the hot tank drain pipe 33 is detachably connected to the third pipe body 323. Furthermore, instead of a sealing plug 331, a drain valve is provided at the outlet of the hot tank drain pipe 33.

[0060] In another feasible embodiment, unlike the above embodiment, the hot tank drain pipe 33 is detachably connected to the third pipe body 323, the outlet end of the hot pipe drain pipe 33 is not located in the fourth cavity 13, and the outlet end of the hot pipe drain pipe 33 extends out from the left, right or front side of the shell 1.

[0061] In another feasible embodiment, unlike the above embodiment, the bottom of the hot tank 3 is provided with a water inlet and a drain hole, the hot tank water inlet pipe 31 is connected to the water inlet, and the hot tank drain pipe 33 is connected to the drain hole.

[0062] In another feasible embodiment, unlike the above embodiment, the water dispenser includes a heat pump system in which a compressor, a condenser, a throttling element, and an evaporator are connected in sequence, and the condenser is used as a heating element and is installed in the hot tank 3.

[0063] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A water dispenser, characterized in that, The water dispenser includes a cold tank (2) and a hot tank (3). The cold tank (2) is provided with a water distribution plate (21), a first cavity (22) located above and below the water distribution plate (21), and a second cavity (23). The second cavity (23) is equipped with a cooling element. The hot tank (3) is equipped with a heating element. The bottom of the hot tank (3) is provided with a water inlet hole, and the first cavity (22) is connected to the water inlet hole through a water inlet pipe.

2. The water dispenser according to claim 1, characterized in that, The bottom of the hot tank (3) is provided with a drain hole, and the drain hole is connected to a drain pipe; The outlet of the drain pipe is located on the left, right, or front side of the water dispenser, and a drain valve or a removable sealing plug (331) is provided at the outlet of the drain pipe; or The outlet of the drain pipe is located inside the internal cavity of the water dispenser. The left, right or front side of the water dispenser is provided with a door that can open the internal cavity. The drain pipe is equipped with a drain valve or a removable sealing plug (331) is provided at the outlet of the drain pipe.

3. The water dispenser according to claim 2, characterized in that, Both the drain hole and the water inlet hole are located at the bottom of the hot tank (3), and the water inlet pipe and the drain pipe are connected to the drain hole via a tee fitting (32).

4. The water dispenser according to claim 3, characterized in that, The three-way fitting (32) includes a first pipe body (321), a second pipe body (322), and a third pipe body (323). The first end of the first pipe body (321), the first end of the second pipe body (322), and the first end of the third pipe body (323) are connected to each other. The outlet end of the water inlet pipe is connected to the second end of the first pipe body (321) through a first flexible pipe (41). The second end of the second pipe body (322) is connected to the inlet and outlet holes through a second flexible pipe (42). The third pipe body (323) is connected to or constitutes the drainage pipe.

5. The water dispenser according to claim 4, characterized in that, The portion of the first tube body (321) connected to the first flexible tube (41) is provided with a first anti-detachment structure; and / or the portion of the second tube body (322) connected to the second flexible tube (42) is provided with a second anti-detachment structure.

6. The water dispenser according to claim 4 or 5, characterized in that, The water dispenser includes a housing (1), a partition (11) is provided inside the housing (1), and a third cavity (12) and a fourth cavity (13) are respectively located above and below the partition (11). The cold tank (2) and the hot tank (3) are both located in the third cavity (12). The partition (11) has a non-circular hole. At least the section of the third tube (323) near its second end matches the shape and size of the non-circular hole. The second end of the third tube (323) passes through the non-circular hole from the third cavity (12) into the fourth cavity (13).

7. The water dispenser according to claim 6, characterized in that, The outlet of the drainage pipe is located in the fourth cavity (13), and the fourth cavity (13) is equipped with the door.

8. The water dispenser according to claim 7, characterized in that, A drainage indicator is provided on the door or the housing (1) near the door.

9. The water dispenser according to any one of claims 1 to 5, characterized in that, A buffer plate (36) is provided above the water inlet.

10. The water dispenser according to any one of claims 1 to 5, characterized in that, The heating element is a heating tube installed inside the hot tank (3); and / or the top of the hot tank (3) is provided with an exhaust hole, which is connected to the exhaust pipe of the cold tank (2) through an exhaust pipe.

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