Water tank for monitoring water level of water dispenser in real time

By using a tubular water inlet switch and monitoring float in the water dispenser tank, the problems of inaccurate monitoring of water level and incomplete automatic water replenishment in the water dispenser tank are solved, and efficient and stable water level management is achieved.

CN223143282UActive Publication Date: 2025-07-25麦雄
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422172656.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-04
Publication Date
2025-07-25
Estimated Expiration
2034-09-04

AI Technical Summary

Technical Problem

The water tanks of traditional water dispenser have problems such as insufficient water level monitoring, incomplete automatic water replenishment functions, high system complexity, high cost and long response time.

Method used

The tubular water inlet switch is designed with a partition and a water plug inside. The partition divides the water inlet switch into an upper chamber and a lower chamber. The water inlet port is located in the upper chamber, and the water plug slides in the lower chamber, which is linked to the monitoring float, and accurately monitors and automatic water replenishment is achieved through the through holes on the partition.

Benefits of technology

It realizes efficient water level monitoring and water replenishment functions, ensures the accuracy of water level detection, improves the stability and response speed of the system, simplifies operational convenience, and reduces the complexity and cost of the system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223143282U_ABST
    Figure CN223143282U_ABST
Patent Text Reader

Abstract

The utility model provides a water dispenser water level real-time monitoring water tank which comprises a water storage tank and a monitoring structure, the monitoring structure comprises a monitoring buoy and a water inlet switch, the water inlet switch is of a tubular structure and internally provided with a partition plate and a water plug, and the water inlet structure penetrates through the water storage tank to form a water inlet and is connected with an external water source buckle with a bayonet. The partition plate divides the water inlet switch into an upper cavity and a lower cavity, the water inlet is located in the upper cavity and prevents water flow from flowing back, the water plug slides in the lower cavity and is in sliding connection with the inner wall, and through holes in the partition plate enable the water plug to stably make contact with the monitoring buoy.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of water tanks, and particularly to a water tank for a water dispenser that can monitor the water level in real time. Background Art

[0002] With the continuous improvement of people's requirements for the functions of water dispensers, traditional water dispenser tanks usually have problems such as inaccurate water level monitoring and imperfect automatic water replenishment functions. Most traditional water dispenser tanks rely on mechanical float balls or simple water level sensors to detect the water level. These traditional methods often have defects such as slow response, large errors, and inability to provide real-time feedback. In addition, when many traditional water dispenser tanks implement automatic water replenishment, they usually require manual operation or use basic water replenishment systems, resulting in the water replenishment function being not intelligent and efficient enough.

[0003] To solve these problems of traditional water dispenser tanks, many existing technical solutions have tried to introduce more accurate water level monitoring technologies and automatic water replenishment systems. For example, some solutions use capacitive water level sensors or ultrasonic sensors to monitor water level changes in real time and combine intelligent control systems to achieve automatic water replenishment functions. These technical solutions can improve the accuracy of water level monitoring and the automation level of the water replenishment system to a certain extent. However, these technical solutions still have certain defects, such as the accuracy problem of sensors, high system complexity, and high cost.

[0004] Although existing technical solutions have made progress in improving water level monitoring and automatic water replenishment functions, they still have deficiencies in structural design and operational convenience. For example, the designs of many intelligent water level monitoring systems are complex, making installation and maintenance cumbersome. In addition, the integration level of existing technologies in water level monitoring and water replenishment control is low, which may lead to unstable overall system performance and long response time. Therefore, there is an urgent need for a water level monitoring and automatic water replenishment technology with an optimized structure to improve the stability and operational convenience of the system. Summary of the Utility Model

[0005] In view of this, it is necessary to provide an optimized structure to solve the above problems.

[0006] An embodiment of this application provides a water tank for a water dispenser that can monitor the water level in real time. One end is externally connected to a water source with a bayonet, and it includes:

[0007] A water storage tank;

[0008] The monitoring structure includes a monitoring buoy and a water inlet switch. The water inlet switch is arranged inside the water tank, and one end thereof penetrates through the water storage tank to form a water inlet. The water inlet is snap-connected to the bayonet. The water inlet switch is of a tubular structure, and a partition and a water plug are arranged therein. The partition divides the water inlet switch into an upper chamber and a lower chamber. The water inlet is located in the upper chamber. The water plug is arranged in the lower chamber and is slidably connected to the inner wall of the lower chamber along the length direction of the water inlet switch. A through hole is formed in the partition. One end of the water plug abuts against the through hole, and the other end abuts against the monitoring buoy.

[0009] In at least one embodiment of the present application, a first fixing ring is integrally formed on the water inlet. The first fixing ring is arranged on the surface of the water storage tank and is in interference fit with the water storage tank.

[0010] In at least one embodiment of the present application, a second fixing ring is integrally formed on the water inlet switch. The second fixing ring is arranged on the inner wall of the water storage tank and is in interference fit with the water storage tank.

[0011] In at least one embodiment of the present application, the monitoring buoy includes a connecting member. A rotating groove is formed at one end of the water inlet switch close to the monitoring buoy. One end of the connecting member is rotatably connected to the rotating groove, and the other end is fixedly connected to the buoy.

[0012] In at least one embodiment of the present application, a rotating shaft is arranged at the contact end of the connecting member and the rotating groove. The connecting member can rotate clockwise or counterclockwise around the axis of the rotating shaft, and the contact end of the connecting member and the rotating groove abuts against the water plug. The connecting member is in transmission connection with the water plug.

[0013] In at least one embodiment of the present application, the end of the monitoring buoy far from the water inlet switch contacts the water source in the water storage tank. The fluctuation of the water level in the water storage tank drives the water plug to slide along the length direction of the water inlet switch.

[0014] In at least one embodiment of the present application, a water outlet structure is arranged at a position of the real-time monitoring water dispenser water tank far from the monitoring structure. The water outlet structure communicates with the water storage tank.

[0015] In at least one embodiment of the present application, the water outlet structure includes a fixing member. One end of the water outlet structure penetrates through the water storage tank and is fixedly connected to the fixing member. The fixing member is in interference fit with the water storage tank.

[0016] In at least one embodiment of the present application, the water outlet structure includes a water outlet pump. The water outlet pump communicates with the water storage tank and is threadedly connected to the fixing member.

[0017] In at least one embodiment of the present application, the water storage tank is made of plastic.

[0018] The real-time monitoring water level water tank of the water dispenser provided above realizes efficient water level monitoring and water replenishment functions through its optimized structure. Specifically, the tubular design of the water inlet switch and its connection to the water storage tank ensure a stable water supply through a bayonet. The partition in the water inlet switch divides the structure into an upper chamber and a lower chamber. The water inlet is located in the upper chamber, preventing the problem of water flow back. The water plug slides in the lower chamber, and its sliding connection with the inner wall ensures its accurate water level adjustment ability. The through hole on the partition enables the water plug to stably contact the monitoring buoy, realizing accurate water level monitoring. This structural design effectively improves the stability and response speed of the overall system by ensuring the accuracy of water level detection and enhancing the automation level of the water replenishment system, making the water level management of the water dispenser more intelligent and efficient. Brief Description of the Drawings

[0019] Figure 1 It is a structural diagram of a real-time monitoring water level water tank of a water dispenser;

[0020] Figure 2 It is a partial cross-sectional view of a real-time monitoring water level water tank of a water dispenser;

[0021] Figure 3 It is a structural diagram of the monitoring structure;

[0022] Figure 4 It is a cross-sectional view of the water inlet switch;

[0023] Figure 5 It is a structural diagram of the water outlet structure.

[0024] Description of the Main Component Symbols

[0025] 1. Water storage tank; 2. Monitoring structure; 3. Monitoring buoy; 4. Water inlet switch; 6. Water inlet; 7. Partition; 8. Water plug; 9. Upper chamber; 10. Lower chamber; 12. Through hole; 13. First fixing ring; 14. Second fixing ring; 15. Connecting piece; 16. Rotating groove; 18. Rotating shaft; 20. Water outlet structure; 21. Fixing piece; 22. Water outlet pump; 100. A real-time monitoring water level water tank of a water dispenser. Specific Embodiments

[0026] Next, the embodiments of the present application will be described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component present. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used herein are for illustrative purposes only.

[0028] An embodiment of the present application provides a real-time monitoring water level water tank for a water dispenser, with one end externally connected to a water source with a bayonet, including:

[0029] A water storage tank;

[0030] A monitoring structure, including a monitoring buoy and a water inlet switch. The water inlet switch is disposed in the water tank, and one end penetrates through the water storage tank to form a water inlet. The water inlet is snap-connected to the bayonet. The water inlet switch is a tubular structure, and a partition and a water plug are provided therein. The partition divides the water inlet switch into an upper chamber and a lower chamber. The water inlet is located in the upper chamber. The water plug is disposed in the lower chamber and is slidably connected to the inner wall of the lower chamber along the length direction of the water inlet switch. The partition is provided with a through hole. One end of the water plug abuts against the through hole, and the other end abuts against the monitoring buoy.

[0031] The above-provided real-time monitoring water level water tank for a water dispenser realizes efficient water level monitoring and water replenishment functions through its optimized structure. Specifically, the tubular design of the water inlet switch and its connection to the water storage tank through the bayonet ensure a stable water supply from the water source. The partition in the water inlet switch divides the structure into an upper chamber and a lower chamber, where the water inlet is located in the upper chamber, preventing the problem of water flow back. The water plug slides in the lower chamber, and its slidable connection with the inner wall ensures its precise water level adjustment ability. The through hole in the partition enables the water plug to stably contact the monitoring buoy, realizing precise water level monitoring. This structural design effectively improves the stability and response speed of the overall system by ensuring the accuracy of water level detection and increasing the automation level of the water replenishment system, making the water level management of the water dispenser more intelligent and efficient.

[0032] The following will Figures 1-5 , in conjunction with the attached drawings, elaborate on some embodiments of the present application. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0033] An embodiment of the present application provides a real-time monitoring water level water tank 100 for a water dispenser, with one end externally connected to a water source with a bayonet, including:

[0034] A water storage tank 1;

[0035] The monitoring structure 2 includes a monitoring buoy 3 and a water inlet switch 4. The water inlet switch 4 is arranged inside the water tank, and one end thereof penetrates through the water storage tank 1 to form a water inlet 6. The water inlet 6 is snap-connected to the bayonet. The water inlet switch 4 is of a tubular structure, and a partition plate 7 and a water plug 8 are arranged inside it. The partition plate 7 divides the water inlet switch 4 into an upper chamber 9 and a lower chamber 10. The water inlet 6 is located in the upper chamber 9. The water plug 8 is arranged in the lower chamber 10 and is slidably connected to the inner wall of the lower chamber 10 along the length direction of the water inlet switch 4. A through hole 12 is formed in the partition plate 7. One end of the water plug 8 abuts against the through hole 12, and the other end abuts against the monitoring buoy 3.

[0036] Specifically, this real-time monitoring water level water tank of the water dispenser includes a water storage tank 1 and a monitoring structure 2. The monitoring structure 2 is composed of a monitoring buoy 3 and a water inlet switch 4. The water inlet switch 4 is arranged inside the water storage tank 1. One end thereof penetrates through the water storage tank 1 to form a water inlet 6 and is connected to the bayonet of the external water source. The water inlet switch 4 is of a tubular structure, and a partition plate 7 and a water plug 8 are arranged inside it. The partition plate 7 divides the interior of the water inlet switch 4 into an upper chamber 9 and a lower chamber 10. The water inlet 6 is arranged in the upper chamber 9, while the water plug 8 is located in the lower chamber 10 and is slidably connected to the inner wall of the lower chamber 10. A through hole 12 is formed in the partition plate 7. One end of the water plug 8 abuts against the through hole 12, and the other end is connected to the monitoring buoy 3. Its working principle is as follows: when the water level in the water tank drops, the buoy will drop accordingly. The drop of the buoy drives the water plug 8 to move, thereby opening the through hole 12, enabling the water source to flow into the water storage tank 1 through the water inlet 6; when the water level rises to a certain height, the buoy rises, pushing the water plug 8 to close the through hole 12 and stop the water inlet. This design can achieve automatic water level control and water replenishment functions through the linkage of the buoy and the water plug 8. In addition, this structure can realize real-time monitoring of the water level in the water dispenser water tank, ensuring that the water tank always maintains an appropriate water level, and avoiding the overflow or dry phenomenon caused by inaccurate water level monitoring or slow response in traditional water tanks. This system is applicable to drinking water equipment that requires stable water level management in families, offices, etc. While improving the convenience and intelligent level of the water tank, it also greatly reduces the complexity of manual operation, enhancing the efficiency and stability of the overall system.

[0037] In a specific example, the water inlet 6 is integrally formed with a first fixing ring 13. The first fixing ring 13 is arranged on the surface of the water storage tank 1 and is in interference fit with the water storage tank 1.

[0038] Specifically, the water inlet 6 is in interference fit with the surface of the water storage tank 1 through the integrally formed first fixing ring 13. This design ensures a firm connection between the water inlet 6 and the water storage tank 1, enhances the sealing performance, and prevents water leakage. The design of this fixing ring not only improves the overall stability of the water tank structure but also simplifies the manufacturing process. By the integrally formed method, the number of components and the manual operation time required in the assembly process of the traditional water tank are reduced, thus reducing the production cost. In addition, the interference fit method can ensure that the water inlet 6 will not loosen or shift during use, further improving the durability and service life of the water tank. For application scenarios that require long-term use and have high requirements for the sealing performance of the water tank, such as household and office drinking water equipment, this design can effectively improve the reliability of the system and reduce the probability of water leakage and failures.

[0039] In a specific example, a second fixing ring 14 is integrally formed on the water inlet switch 4, and the second fixing ring 14 is disposed on the inner wall of the water storage tank 1 and is in interference fit with the water storage tank 1.

[0040] Specifically, the integrally formed second fixing ring 14 of the water inlet switch 4 is fixed to the inner wall of the water storage tank 1 through interference fit. This design ensures the stability and sealing performance of the water inlet switch 4 inside the water tank. The interference fit between the fixing ring and the inner wall of the water storage tank 1 not only enhances the structural strength of the entire system but also avoids water leakage problems caused by the loosening or displacement of the water inlet switch 4. This design reduces the number of moving parts inside the water tank, reduces the wear caused by friction or vibration between components, and extends the service life of the equipment. In specific applications, this design is very suitable for use in drinking water equipment that operates for a long time because it can effectively reduce the maintenance requirements, improve the stability and reliability of the equipment, and at the same time enhance the sealing performance of the system, making the use environment of the water tank safer and more hygienic.

[0041] In a specific example, the monitoring buoy 3 includes a connecting member 15. A rotating groove 16 is formed at one end of the water inlet switch 4 adjacent to the monitoring buoy 3. One end of the connecting member 15 is rotatably connected to the rotating groove 16, and the other end is fixedly connected to the buoy.

[0042] Specifically, the monitoring buoy 3 is connected to the rotating groove 16 at the adjacent end of the water inlet switch 4 through the connecting member 15. One end of the connecting member 15 is connected to the rotating groove 16, and the other end is fixedly connected to the buoy. With this design, when the water level changes, the movement of the buoy will be transmitted to the rotating groove 16 through the connecting member 15, thereby realizing the angle or position adjustment of the buoy. This structural design improves the flexibility of the buoy and the accuracy of water level monitoring, can respond in a timely manner when the water level changes, and avoids the problem of slow response caused by the rigid structure of traditional buoys. In addition, the design of the connecting member 15 and the rotating groove 16 also endows the system with higher adaptability and adjustment ability, and can maintain the stability and reliability of the system under the condition of large water level fluctuations. This design is especially suitable for scenarios with high requirements for water level monitoring accuracy, such as intelligent drinking water equipment that needs to frequently adjust the water level, which can ensure that the water level in the water tank is always in the best state and provide a stable drinking water supply.

[0043] In a specific example, a rotating shaft 18 is provided at the contact end of the connecting member 15 and the rotating groove 16. The connecting member 15 can rotate clockwise or counterclockwise around the axis of the rotating shaft 18, and the contact end of the connecting member 15 abuts against the water plug 8, and the connecting member 15 is in transmission connection with the water plug 8.

[0044] Specifically, the connecting member 15 is connected to the rotating groove 16 through the rotating shaft 18, and the connecting member 15 is also in transmission connection with the water plug 8. With this design, when the water level changes, the connecting member 15 will rotate clockwise or counterclockwise around the rotating shaft 18, thereby driving the water plug 8 to slide in the water inlet switch 4. This design enables the water plug 8 to accurately adjust its position according to the water level change, realizing the water level adjustment inside the water tank. The transmission connection design of the connecting member 15 and the water plug 8 not only improves the accuracy of water level adjustment, but also reduces the friction and wear in mechanical transmission, and prolongs the service life of the system. This design is very suitable for drinking water equipment with high requirements for water level control accuracy, can respond quickly when the water level changes, ensure the stable operation of the system, and avoid problems such as unstable or excessive water supply caused by large water level fluctuations.

[0045] In a specific example, the monitoring buoy 3 contacts the water source in the storage tank 1 at the end far from the water inlet switch 4, and the water level fluctuation in the storage tank 1 drives the water plug 8 to slide along the length direction of the water inlet switch 4.

[0046] Specifically, the monitoring buoy 3 is designed to be able to contact the water source in the water storage tank 1 and drive the water plug 8 to slide along the length direction of the water inlet switch 4 through the fluctuation of the water level. This linkage design between the buoy and the water plug 8 ensures real-time monitoring and feedback of the water level. When the water level in the water tank rises or falls, the buoy will automatically adjust its position according to the water level change, thereby driving the water plug 8 to perform corresponding sliding operations. This design simplifies the structures of the traditional buoy and the water plug 8, reduces the intermediate transmission links, and improves the response speed and sensitivity of the system. In application scenarios such as water dispensers that require frequent water level monitoring, this design can effectively improve the operating efficiency of the water tank, reduce the need for human intervention, and ensure the stability and continuity of water supply.

[0047] In a specific example, an outlet structure 20 is provided at a position of the water tank of the water dispenser for real-time monitoring away from the monitoring structure, and the outlet structure 20 communicates with the water storage tank 1.

[0048] Specifically, the outlet structure 20 of the water dispenser water tank is designed at the other end away from the monitoring structure 2 and realizes the output of the water source by communicating with the water storage tank 1. This design separates the monitoring and outlet functions through layout, reduces the complexity of the internal structure of the system, and avoids mutual interference between different functional modules. The position arrangement of the outlet structure 20 can ensure the smooth outflow of the water source, and can provide a stable water flow output in the case of rapid drainage or water replenishment. This design is particularly suitable for drinking water equipment that requires rapid drainage, can improve the drainage efficiency of the system while maintaining the water level stable, and meet the user's demand for efficient water supply.

[0049] In a specific example, the outlet structure 20 includes a fixing member 21. One end of the outlet structure 20 penetrates through the water storage tank 1 and is fixedly connected to the fixing member 21, and the fixing member 21 is in interference fit with the water storage tank 1.

[0050] Specifically, the outlet structure 20 is fixed to the water storage tank 1 through interference fit with the fixing member 21. This design ensures the stability and sealing performance of the outlet structure 20 and prevents water leakage. The interference fit between the fixing member 21 and the water storage tank 1 enhances the overall structural strength of the water tank and reduces problems such as component loosening or displacement caused by changes in water flow pressure or external impact. In practical applications, this design improves the reliability and durability of the water dispenser water tank, enables it to maintain stable performance during long-term use, and reduces the need for maintenance and repair. This design is very suitable for application in frequently used drinking water equipment to ensure that the equipment can still maintain efficient and stable operation under long-term high-frequency use.

[0051] In a specific example, the outlet structure 20 includes a water outlet pump 22, and the water outlet pump 22 communicates with the water storage tank 1 and is threadedly connected to the fixing member 21.

[0052] Specifically, the water outlet structure 20 includes a water outlet pump 22, which is connected to the fixing member 21 by screw connection and communicates with the water storage tank 1. This design ensures the stability and controllability of the water outlet system. The water outlet pump 22 can accurately control the water output according to requirements and provide a stable water flow. In addition, the screw connection design between the water outlet pump 22 and the fixing member 21 facilitates the installation and maintenance of the equipment. Users can easily replace or maintain the water outlet pump 22, improving the convenience and flexibility of equipment use. This design is applicable to drinking water equipment with strict requirements for water output, and can provide more precise water flow control while maintaining efficient drainage, meeting the diverse needs of users.

[0053] In a specific example, the water storage tank 1 is made of plastic.

[0054] Specifically, the water storage tank 1 is made of plastic material. This design not only ensures the lightness of the water tank, but also has good corrosion resistance, and can maintain stable performance during long-term use. The choice of plastic material reduces the manufacturing cost of the water tank, while also improving its durability and impact resistance. For household and commercial drinking water equipment, this design can effectively reduce the weight of the equipment, facilitate handling and installation, and reduce the frequency of maintenance and replacement during use. In addition, the plastic material also has good processing performance and can be customized in various shapes and sizes according to requirements to meet the application needs in different scenarios.

[0055] The above are only the implementation manners of the present application. It should be noted here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. A water level tank for a water dispenser with real-time monitoring function, one end of which is externally connected to a water source with a bayonet, characterized in that, including: a water storage tank; a monitoring structure, including a monitoring buoy and a water inlet switch. The water inlet switch is arranged inside the water tank, and one end thereof penetrates through the water storage tank to form a water inlet. The water inlet is snap-connected to the bayonet. The water inlet switch is a tubular structure, and a partition and a water plug are arranged inside it. The partition divides the water inlet switch into an upper chamber and a lower chamber. The water inlet is located in the upper chamber. The water plug is arranged in the lower chamber and is slidably connected to the inner wall of the lower chamber along the length direction of the water inlet switch. A through hole is formed in the partition. One end of the water plug abuts against the through hole, and the other end abuts against the monitoring buoy.

2. The real-time monitoring water dispenser water level water tank according to claim 1, characterized in that, A first fixing ring is integrally formed on the water inlet. The first fixing ring is arranged on the surface of the water storage tank and is in interference fit with the water storage tank.

3. The real-time monitoring water dispenser water level water tank according to claim 1, characterized in that, A second fixing ring is integrally formed on the water inlet switch. The second fixing ring is arranged on the inner wall of the water storage tank and is in interference fit with the water storage tank.

4. The real-time monitoring water dispenser water level water tank according to claim 1, wherein The monitoring buoy includes a connecting member. A rotating groove is formed at one end of the water inlet switch close to the monitoring buoy. One end of the connecting member is rotatably connected to the rotating groove, and the other end is fixedly connected to the buoy.

5. The real-time monitoring water dispenser water level water tank according to claim 4, characterized in that, A rotating shaft is arranged at the contact end of the connecting member and the rotating groove. The connecting member can rotate clockwise or counterclockwise around the axis of the rotating shaft. The contact end of the connecting member and the rotating groove abuts against the water plug, and the connecting member is in transmission connection with the water plug.

6. The real-time monitoring water dispenser water level water tank according to claim 1, characterized in that, The end of the monitoring buoy away from the water inlet switch contacts the water source in the water storage tank. The water level fluctuation in the water storage tank drives the water plug to slide along the length direction of the water inlet switch.

7. The real-time monitoring water dispenser water level water tank according to claim 1, wherein A water outlet structure is arranged at the water storage tank of the real-time monitoring water dispenser level away from the monitoring structure. The water outlet structure communicates with the water storage tank.

8. The real-time monitoring water dispenser water level water tank according to claim 7, characterized in that, The water outlet structure includes a fixing member. One end of the water outlet structure penetrates through the water storage tank and is fixedly connected to the fixing member. The fixing member is in interference fit with the water storage tank.

9. The real-time monitoring water dispenser water level water tank according to claim 7, characterized in that, The water outlet structure includes a water outlet pump. The water outlet pump communicates with the water storage tank and is threadedly connected to the fixing member.

10. The real-time monitoring water dispenser water level water tank according to claim 1, characterized in that, The water storage tank is made of plastic.