Check valve mounting structure and water dispenser

Abstract

The utility model relates to a check valve mounting structure and a water dispenser. The check valve mounting structure comprises an integrated waterway plate and a cover plate, a water inlet flow channel is arranged on the integrated water path plate and is arranged in the integrated water path plate; a check valve mounting hole is formed in a path of the water inlet runner and is used for mounting a check valve; and the cover plate covers and presses the integrated waterway plate and is used for forming a sealed water inlet runner. The water inlet flow channel and the check valve mounting hole are integrated on the integrated waterway board, a fixing position is provided for the check valve, the check valve does not need to be additionally arranged outside the waterway board, the internal structural design of the equipment is simplified, the occupied space is reduced, the mounting efficiency is improved, and the integrated waterway board is more suitable for the development requirements of small household appliances.

Description

Technical Field

[0001] This application relates to the field of drinking water equipment technology, and in particular to a check valve installation structure and a water dispenser. Background Technology

[0002] With the continuous development of water dispenser and water purifier technology, their internal water circuits are becoming increasingly complex. Integrated water circuit board technology is gradually being applied to related equipment. Integrated water circuit boards have the advantages of simplifying the internal space of the equipment, improving assembly efficiency, and reducing production costs, making them an important direction for optimizing the water circuit system of drinking water equipment.

[0003] In traditional technologies, water systems typically control water flow through separate pipe assemblies and connectors. While this achieves basic water distribution, in practical applications, additional check valves are often required to prevent backflow.

[0004] However, currently, the water system in water purifiers consists of an independent water circuit board and a check valve, with a connection structure between the water circuit board and the check valve. Adding an extra check device connection structure would complicate the internal structure of the water dispenser, make installation inconvenient, increase the difficulty of equipment maintenance, and require more internal space for the water dispenser, which is not conducive to the miniaturization and integration design of the equipment. Utility Model Content

[0005] Therefore, it is necessary to provide a check valve installation structure and a water dispenser to address the problems of limited internal space for installing check valves and the easy backflow of water inside the water dispenser.

[0006] In a first aspect, this application provides a check valve mounting structure, including:

[0007] The integrated water circuit board has an inlet channel located inside the integrated water circuit board; the path of the inlet channel has a check valve mounting hole for installing a check valve.

[0008] The cover plate is pressed onto the integrated water circuit board to form a sealed water inlet channel.

[0009] In one embodiment, the structure further includes:

[0010] The first enclosed perimeter is set on the integrated water circuit board to form an isolation cavity with the cover plate and the integrated water circuit board.

[0011] In one embodiment, an inlet hole is provided on the integrated water circuit board, and the inlet hole and the check valve mounting hole are located inside the first enclosed periphery.

[0012] In one embodiment, the structure further includes:

[0013] The second enclosed perimeter is installed on the integrated water circuit board and is located inside the first enclosed perimeter; the second enclosed perimeter is used to seal the connection between the check valve and the check valve mounting hole.

[0014] In one embodiment, the second enclosed perimeter is connected to the first enclosed perimeter, and the connected areas share the same enclosed perimeter.

[0015] In one embodiment, a sealing ring is provided on the cover plate corresponding to the first enclosed periphery;

[0016] With the cover plate pressing down on the integrated water circuit board, the sealing ring is engaged with the inner wall of the first closed perimeter.

[0017] In one embodiment, a water inlet branch is formed between the cover plate and the first enclosed periphery, the water inlet branch being used to connect the water inlet hole and the water inlet flow channel where the check valve mounting hole is located.

[0018] In one embodiment, the integrated water circuit board includes a first water circuit board body and a second water circuit board body, and the second water circuit board body, the first water circuit board body and the cover plate are arranged and connected in an assembly sequence.

[0019] The first water passage plate, the second water passage plate, and the cover plate are connected to form a closed water inlet channel.

[0020] Secondly, this application provides a water dispenser, which includes a check valve and a check valve mounting structure as described in the first aspect.

[0021] In one embodiment, the check valve is snapped into the check valve mounting hole and connected to the second enclosed periphery; the position of the check valve in the vertical direction is restricted by the cover plate, which confines the check valve within the second enclosed periphery.

[0022] The aforementioned check valve installation structure and water dispenser feature an integrated water circuit board with an inlet channel located inside the board. A check valve mounting hole is positioned along the path of this inlet channel, ensuring direct and efficient water flow to the hole. After the check valve is installed, the water flow is unobstructed during normal operation, preventing backflow. In the event of backflow, the check valve quickly closes, blocking the flow and preventing the risk of backflow. The integrated inlet channel and mounting hole on the water circuit board provide a fixed position for the check valve, eliminating the need for an external check valve. This simplifies the internal structure, reduces space requirements, and improves installation efficiency, better meeting the needs of miniaturized home appliances. The cover plate is installed on the integrated water circuit board by pressing it over the cover plate, and together with the integrated water circuit board, it fixes the check valve, forming a sealed water inlet channel inside the integrated water circuit board to prevent water from leaking from the seams of the cover plate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the check valve mounting structure in some embodiments of this application.

[0025] Figure 2 This is a schematic diagram of the integrated water circuit board in some embodiments of this application.

[0026] Figure 3 This is a cross-sectional view of the check valve mounting structure in another embodiment of this application.

[0027] Explanation of icon numbers:

[0028] 100. Integrated water circuit board; 102. Check valve mounting hole; 104. Water inlet; 106. First enclosed perimeter; 108. Second enclosed perimeter; 110. Sealing ring; 112. Water inlet branch; 114. Protrusion; 116. First water circuit board body; 118. Second water circuit board body; 120. Shielding and sealing part; 200. Cover plate; 202. Insertion part; 300. Check valve. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] The applicant noted that the water system in water supply equipment such as water dispensers and water purifiers typically controls water flow direction through separate pipe components and connectors. While this achieves basic water distribution, it often requires an additional check valve to prevent backflow. Most check valves cannot be directly installed on the water circuit board and require mounting components. Adding an extra check valve to the water system complicates the internal structure of the water supply equipment, makes installation inconvenient, increases maintenance difficulty, and requires significant internal space, hindering miniaturization and integrated design.

[0036] Regarding the above issues, firstly, please refer to... Figure 1 , Figure 1 A schematic diagram of the check valve mounting structure is shown. One embodiment of this application provides a check valve 300 mounting structure, including an integrated water circuit board 100 and a cover plate 200; the integrated water circuit board 100 has a water inlet channel disposed inside the integrated water circuit board 100; a check valve mounting hole 102 is provided along the path of the water inlet channel for mounting the check valve 300; the cover plate 200 covers the integrated water circuit board 100 to form a sealed water inlet channel.

[0037] The integrated water circuit board 100 is a plate-shaped structure that integrates multiple water flow channels and water circuit components, concentrating the originally dispersed water circuit system into a single plate. The inlet channel is a channel inside the integrated water circuit board 100 used to guide water flow. The cover plate 200 is a component that covers the integrated water circuit board 100, mainly used to seal the inlet channel on the water circuit board, ensuring no water leakage and providing a stable mounting position for the check valve 300.

[0038] In this embodiment, the integrated water circuit board 100 is designed with a water inlet channel located inside the water circuit board. A check valve mounting hole 102 is provided on the path of the water inlet channel of the integrated water circuit board 100, which ensures that the water flow can directly and efficiently flow to the check valve mounting hole 102. When the check valve 300 is installed, since the water flow must pass through the check valve mounting hole 102, the water flow is not obstructed by the check valve 300 during normal flow, and the water flow passes smoothly. If backflow occurs, the check valve 300 will quickly close, blocking the water flow and avoiding the risk of water backflow. The integrated water circuit board 100 integrates the water inlet channel and the check valve mounting hole 102, providing a fixed position for the check valve 300. There is no need to add a check valve 300 outside the water circuit board, which simplifies the internal structure design of the equipment, reduces space occupation, and improves installation efficiency, making it more suitable for the development needs of miniaturized home appliances. The cover plate 200 is installed on the integrated water circuit board 100 by pressing, and together with the integrated water circuit board 100, it fixes the check valve 300, forming a closed water inlet channel inside the integrated water circuit board 100 to prevent water from leaking from the joint of the cover plate 200.

[0039] Please see Figure 2 and combined Figure 1 , Figure 2 The diagram shows a structural schematic of an integrated water circuit board in one embodiment of this application. In some embodiments, the structure further includes a first enclosed periphery 106, which is disposed on the integrated water circuit board 100 and is used to form an isolation cavity with the cover plate 200 and the integrated water circuit board 100.

[0040] Furthermore, an inlet hole 104 is provided on the integrated water circuit board 100, and the inlet hole 104 and the check valve mounting hole 102 are located inside the first enclosed periphery 106.

[0041] The first enclosed periphery 106 is a sealing structure used to seal the space between the integrated water circuit board 100 and the cover plate 200. The first enclosed periphery 106 fits tightly with the integrated water circuit board 100 and the cover plate 200 to form an isolation cavity. The isolation cavity can prevent water from leaking from the joint between the cover plate 200 and the water circuit board, thereby improving the sealing performance of the entire water circuit system. The sealing cavity surrounded by the first enclosed periphery 106 is also part of the water inlet channel, used to guide the water flow and ensure that the water flows stably through the water inlet hole 104 and the check valve mounting hole 102.

[0042] Specifically, the water inlet 104 and the check valve mounting hole 102 are arranged adjacently and jointly within the first enclosed periphery 106. Before the cover plate 200 is closed, the water inlet channel includes the water inlet channel where the water inlet 104 is located and the water inlet channel where the check valve mounting hole 102 is located; the two water inlet channels are not sealed. After the cover plate 200 is closed, the water inlet channel is sealed, forming a complete and sealed water inlet channel inside the water circuit board. At this time, water flows from the water inlet 104 into the sealed cavity, and the water in the sealed cavity flows out from the check valve mounting hole 102. Optionally, a check valve 300 can be selectively installed in the check valve mounting hole 102. When there is no possibility of backflow in the inlet channel of the integrated water circuit board 100, such as when the water flows out directly under gravity or when the water pressure in the inlet channel where the inlet hole 104 is located is much greater than the water pressure in the inlet channel where the check valve mounting hole 102 is located, backflow is impossible. In this case, there is no need to install the check valve 300 in the check valve mounting hole 102, and the check valve mounting hole 102 is used as an outlet. When there is a possibility of backflow in the inlet channel of the integrated water circuit board 100, such as when the water source pressure is less than the water pressure in the inlet channel, the water flow is stagnant at high points, or the water circuit system design is unreasonable, the check valve 300 is installed in the check valve mounting hole 102. The check valve 300 restricts the direction of water flow in the inlet channel and maintains the pressure balance in the inlet channel.

[0043] Furthermore, the integrated water circuit board 100 includes a first water circuit board body 116 and a second water circuit board body 118. The first and second water circuit board bodies 118, the first water circuit board body 116, and the cover plate 200 are arranged and connected in the assembly sequence. After the first water circuit board body 116 and the second water circuit board body 118 are fixedly connected, a water inlet channel is formed at the location of the water inlet hole 104 and a water inlet channel at the location of the check valve mounting hole 102. The water inlet channel at the location of the water inlet hole 104 and the water inlet channel at the location of the check valve mounting hole 102 are connected by the sealing and pressing of the cover plate 200 to form a complete water inlet channel.

[0044] In this embodiment, by jointly arranging the water inlet 104 and the check valve mounting hole 102 within the first enclosed periphery 106, water flows into the isolation cavity containing the first enclosed periphery 106, the cover plate 200, and the integrated water circuit board 100 through the water inlet 104. Water can only flow out through the check valve mounting hole 102 or the check valve 300, entering the next water inlet channel. The check valve 300 can be selectively installed according to the overall equipment requirements. The equipment provides installation space and adjustable / replaceable functionality for the check valve 300, allowing the integrated water circuit board 100 to be freely installed during upgrades without requiring additional components for the check valve 300 within the equipment. This provides installation space for the check valve 300 and maintains a high functional density.

[0045] Please continue to refer to Figure 1 and Figure 2 In some embodiments, a second enclosed periphery 108 is also included, which is disposed on the integrated water circuit board 100. The second enclosed periphery 108 is located inside the first enclosed periphery 106. The second enclosed periphery 108 is used to seal the connection between the check valve 300 and the check valve mounting hole 102.

[0046] Specifically, the second enclosed periphery 108 is connected to the check valve mounting hole 102. The second enclosed periphery 108 provides an additional sealing layer between the check valve 300 and the check valve mounting hole 102, ensuring that water does not leak at the connection point when it flows through the check valve 300. The protrusion height of the second enclosed periphery 108 is less than that of the first enclosed periphery 106. When the cover plate 200 is closed, it does not affect the sealing performance between the first enclosed periphery 106 and the cover plate 200. Since there is a gap between the first enclosed periphery 106 and the cover plate 200, water can enter the check valve 300 or the check valve mounting hole 102 inside the second enclosed periphery 108, further optimizing the path of the water inlet channel.

[0047] Furthermore, the second enclosed perimeter 108 is connected to the first enclosed perimeter 106, and the connected area shares the same enclosed perimeter. The first enclosed perimeter 106 and the second enclosed perimeter 108 have a connecting portion, and this connecting portion shares the same enclosed perimeter. This saves materials and space in the integrated water circuit board 100, making the structure more compact and supporting the miniaturization of home appliances. Optionally, the integrated water circuit board, the first enclosed perimeter, and the second enclosed perimeter are integrally molded plastic structures.

[0048] Please refer to Figure 3 and Figure 1 , Figure 3 A cross-sectional view of the check valve installation structure in one embodiment of this application is shown. In some embodiments, a sealing ring 110 is provided on the cover plate 200 and the first closed periphery 106 respectively. When the cover plate 200 is pressed on the integrated water circuit board 100, the sealing ring 110 is engaged with the inner wall of the first closed periphery 106.

[0049] Among them, a water inlet branch 112 is formed between the first enclosed periphery 106 and the cover plate 200. The water inlet branch 112 is used to connect the water inlet hole 104 and the water inlet flow channel where the check valve mounting hole 102 is located.

[0050] Specifically, the cover plate 200 has insertion portions 202 at both ends and a sealing ring 110 in the middle. The integrated water circuit board 100 has protrusions 114 at both ends. The insertion portions 202 and the protrusions 114 are correspondingly arranged, and the sealing ring 110 and the first enclosed periphery 106 are correspondingly arranged. When the cover plate 200 is closed on the integrated water circuit board 100, the sealing ring 110 is engaged with the inner wall of the first enclosed periphery 106, and the insertion portions 202 and the protrusions 114 are correspondingly fitted. The insertion portions 202 and the protrusions 114 are fixedly connected by interference fit or screw connection. At this time, the position of the cover plate 200 is fixed, and the sealing ring 110 and the inner wall of the first enclosed periphery 106 are interference fit, so that the water inlet channel between the cover plate 200 and the integrated water circuit board 100 is sealed.

[0051] Furthermore, the inner cavity of the sealing ring 110 is a hollow cavity, and a water inlet branch 112 is formed on the surface of the cover plate 200 and the first enclosed periphery 106. This water inlet branch 112 is used to connect the water inlet channel where the water inlet hole 104 is located and the water inlet channel where the check valve mounting hole 102 is located. A gap is left between the top of the second enclosed periphery 108 and the cover plate 200. When water flows into the sealing cavity from the water inlet hole 104, the water level overflows the second enclosed periphery 108 and flows into the water inlet branch 112, and then into the water inlet channel where the check valve mounting hole 102 is located, forming a complete and sealed water channel.

[0052] The cover plate 200 is also provided with a transverse blocking and sealing part 120, which is located around the sealing ring 110. When the sealing ring 110 is engaged with the first closed periphery 106, the blocking and sealing part 120 is located between the sealing ring 110 and the first closed periphery 106, which can improve the sealing performance between the cover plate 200 and the integrated water circuit board 100. At the same time, the blocking and sealing part 120 can also increase the tightness of the connection between the cover plate 200 and the first closed periphery 106, preventing the cover plate 200 or the check valve 300 from loosening or detaching due to high water pressure in the cavity.

[0053] In this embodiment, a sealing ring 110 is provided between the cover plate 200 and the first enclosed periphery 106 to ensure the sealing of the water inlet channel. The water inlet branch 112 formed between the inner cavity of the sealing ring 110 and the cover plate 200 can effectively guide the water flow from the water inlet hole 104 to the check valve mounting hole 102, thereby ensuring a smooth water flow and preventing leakage and backflow. At the same time, the interference fit design between the sealing ring 110 and the first enclosed periphery 106 further enhances the sealing performance and prevents loosening or leakage due to long-term use. The plug-in portions 202 at both ends of the cover plate 200 correspond to the protrusions 114 of the integrated water circuit board 100, simplifying the installation process. During installation, the cover plate 200 simply needs to be pressed onto the integrated water circuit board 100. Through the cooperation of the plug-in part 202 and the protrusion 114, the cover plate 200 can be accurately and firmly fixed in position, avoiding cumbersome fixing steps and preventing seal failure or cover plate 200 detachment under high water pressure. A water inlet branch 112 is formed between the first enclosed periphery 106 and the cover plate 200, ensuring efficient water flow guidance, avoiding obstruction or bypassing of the water flow, and improving the working efficiency of the water flow system. Simultaneously, the water flows naturally into the water inlet branch 112 within the sealed cavity, further reducing water flow friction loss.

[0054] Secondly, one embodiment of this application provides a water dispenser, which includes a check valve 300 and any of the check valve 300 mounting structures provided in the first aspect.

[0055] The check valve 300 is snapped into the check valve mounting hole 102 and connected to the second enclosed periphery 108; the check valve 300 is tightly fitted with the cover plate 200, fixing the check valve 300 on the integrated water circuit board 100.

[0056] For example, when the water dispenser is running, water flows through the inlet channel located at the inlet hole 104 into the sealed cavity formed by the cover plate 200, the first enclosed periphery 106, and the integrated water circuit plate 100. The water then flows through the inlet branch 112 and into the inlet channel located at the check valve mounting hole 102. When the water flows smoothly into the check valve 300, the working state of the check valve 300 is adjusted according to the direction and pressure changes of the water flow. During normal water supply, the water flows from the inlet hole 104 through the isolation cavity, the check valve 300 remains open, and the water flows unimpeded to other parts inside the water dispenser. Conversely, when the water pressure is insufficient or other design problems occur, backflow may occur. In this case, the check valve 300 will quickly close to prevent the water from flowing backward, thereby preventing water from flowing back into the sealed cavity or the inlet channel located at the inlet hole 104.

[0057] In this embodiment, the water dispenser employs a check valve 300 mounting structure and a check valve 300 itself. This ensures that water flows only in the correct direction, preventing backflow. The check valve 300 automatically adjusts according to the water flow direction, promptly closing the backflow path to protect the internal water system of the water dispenser and ensure the hygiene and safety of the user's drinking water. Furthermore, the check valve 300 mounting structure allows for selective installation of the check valve 300 based on the structural and functional requirements of the water dispenser, providing a suitable installation location, simplifying the installation process, and enabling a more compact water dispenser.

[0058] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A check valve mounting structure, characterized in that, The structure includes: An integrated water circuit board is provided with a water inlet channel, which is located inside the integrated water circuit board; a check valve mounting hole is provided on the path of the water inlet channel, which is used to install a check valve. A cover plate is pressed onto the integrated water circuit board to form a sealed water inlet channel.

2. The structure according to claim 1, characterized in that, The structure also includes: The first enclosed periphery is set on the integrated water circuit board to form an isolation cavity with the cover plate and the integrated water circuit board.

3. The structure according to claim 2, characterized in that, The integrated water circuit board has a water inlet hole, and the water inlet hole and the check valve mounting hole are located inside the first enclosed periphery.

4. The structure according to claim 2, characterized in that, The structure also includes: The second enclosed perimeter is disposed on the integrated water circuit board, and the second enclosed perimeter is located inside the first enclosed perimeter; the second enclosed perimeter is used to seal the connection between the check valve and the check valve mounting hole.

5. The structure according to claim 4, characterized in that, The second enclosed perimeter is connected to the first enclosed perimeter, and the connected areas share the same enclosed perimeter.

6. The structure according to claim 3, characterized in that, The cover plate is provided with a sealing ring corresponding to the first enclosed periphery; When the cover plate is pressed onto the integrated water circuit board, the sealing ring is engaged with the inner wall of the first enclosed periphery.

7. The structure according to claim 6, characterized in that, The cover plate and the first enclosed periphery form a water inlet branch, which is used to connect the water inlet hole and the water inlet flow channel where the check valve mounting hole is located.

8. The structure according to claim 1, characterized in that, The integrated water circuit board includes a first water circuit board body and a second water circuit board body, and the second water circuit board body, the first water circuit board body and the cover plate are arranged and connected in an assembly sequence. The first water channel plate, the second water channel plate, and the cover plate are connected to form a closed water inlet channel.

9. A water dispenser, characterized in that, The water dispenser includes a check valve and a check valve mounting structure as described in any one of claims 1-8.

10. The water dispenser according to claim 9, characterized in that, The check valve is snapped into the check valve mounting hole and connected to the second enclosed periphery; the vertical position of the check valve is restricted by the cover plate, which confines the check valve within the second enclosed periphery.

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