Upper water taking type water dispenser with pneumatic residual water discharging function

Abstract

The utility model discloses an upward water taking type water dispenser with a pneumatic residual water discharging function. The upward water taking type water dispenser comprises a water boiler, a water supply system and a water return system. The water boiler is provided with a water cavity, and the water conveying system is used for conveying water in the water boiler to the water outlet nozzle. Due to the fact that the water return system is additionally arranged, when the water supply system works, the gas port of the exhaust device and the second switch valve are both in a closed state to disconnect the gas circuit and the water return pipeline, and interference to work of the water supply system is avoided. At the moment, the water pump and the first switch valve are opened simultaneously, and the drinking water is conveyed from the water cavity to the water outlet nozzle to be taken by a user. When the water supply system stops working, the water pump and the first switch valve are both closed, so that water is effectively prevented from leaking outwards from the water outlet nozzle; meanwhile, the second switch valve conducts the water return pipeline, the exhaust device conveys gas through the exhaust pipeline, the gas flow extrudes water in the water conveying system into the water cavity of the water boiler, and the situation that when a user takes down the water taking cover of the machine body, the water leaks outwards from the input end of the water inlet pipeline is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to an upper water intake type water dispenser with pneumatic residual water discharge. Background Art

[0002] The popular upper water intake type water dispenser on the current market is mainly composed of three major parts: a main machine, a kettle, and a water intake cover. The main machine is designed with a water outlet and a water pump, and the kettle is provided with a water storage cavity with an opening at the top. During daily use, the user needs to inject clean water into the water storage cavity and tightly seal it with the water intake cover to ensure the tightness of the system. The inside of the water intake cover is equipped with a water delivery pipeline connected to the water outlet and the water storage cavity. When the user needs hot water, just start the water pump, and the water that has been heated to boiling will flow smoothly from the water storage cavity to the water outlet along the waterway system inside the water intake cover for the user to use.

[0003] However, there are problems with the current upper water intake type water dispenser: after each water intake, there will always be some water remaining in the water delivery pipeline. If these residual waters stay for a long time, they are likely to become a breeding ground for bacteria and even emit unpleasant odors. At the same time, they may also affect the temperature accuracy of the next water outlet of the water dispenser, and will also scald the user with the dripping hot water when the user removes the water intake cover. These problems not only reduce the user experience, but also cannot guarantee the safety of drinking water. In view of this, the structure of the existing upper water intake type water dispenser needs to be further improved. Summary of the Invention

[0004] The invention purpose of the utility model is to solve the problem of residual water in the pipeline of the existing countertop free-installation water purifier, and provide an upper water intake type water dispenser with pneumatic residual water discharge.

[0005] To achieve the above invention purpose, the utility model adopts the following technical solutions:

[0006] The upper water intake type drinking fountain with pneumatic residual water discharge includes a water boiler, a water delivery system and a water return system. The water boiler is provided with a water chamber. The water delivery system includes a water inlet pipeline, a water outlet pipeline, a water pump, a water outlet nozzle and a first switching valve. The input end of the water inlet pipeline communicates with the water chamber of the water boiler, and its output end is connected to the input end of the water outlet pipeline. The first switching valve and the water outlet nozzle are arranged at the output end of the water outlet pipeline, and the water pump is arranged on the water outlet pipeline. The water return system includes an exhaust device, an exhaust pipe, a water return pipe and a second switching valve. The input end of the water return pipe is connected to one side of the water outlet pipeline where the water outlet end of the water pump is located, and the output end is connected to one side of the water outlet pipeline where the water inlet end of the water pump is located. The input end of the exhaust pipe is connected to the gas outlet of the exhaust device, and the output end is connected to one side of the water outlet pipeline where the water outlet end of the water pump is located, so as to squeeze the water in the water outlet pipeline into the water return pipe and then into the water inlet pipeline through exhaust, and return to the water chamber through the water inlet pipeline. The second switching valve is arranged on the water return pipe.

[0007] Compared with the prior art, the upper water intake type drinking fountain of the present utility model is additionally provided with a water return system. When the water delivery system works, the gas port of the exhaust device and the second switching valve are both in a closed state to disconnect the gas path and the water return pipe, so as to avoid interfering with the operation of the water delivery system. At this time, the water pump and the first switching valve are opened simultaneously to convey the drinking water from the water chamber to the water outlet nozzle for the user to use. When the water delivery system stops working, the water pump and the first switching valve are both closed, effectively avoiding the dripping of the drinking water from the water outlet nozzle. At the same time, the second switching valve conducts the water return pipe, and the exhaust device conveys gas through the exhaust pipe. The air flow sequentially passes through one side of the water outlet pipeline where the water outlet end of the water pump is located, the water return pipe and the water inlet pipeline, squeezing the water in the water delivery system into the water chamber of the water boiler, avoiding the problem of residual water in the pipeline, and preventing the drinking water from dripping out from the input end of the water inlet pipeline when the user removes the water intake cover of the machine body.

[0008] Further, the water delivery system further includes a flow dividing member, which includes a first port, a second port and a third port. The flow dividing member is connected to the output end of the water inlet pipeline through the first port, connected to the input end of the water outlet pipeline through the second port, and connected to the output end of the water return system through the third port.

[0009] Further, the flow dividing member is a three-way valve, and the three-way valve can selectively conduct the first port and the second port, or the first port and the third port. In this solution, the flow dividing member can selectively connect the water inlet pipeline and the water outlet pipeline, or connect the water return pipe and the water inlet pipeline.

[0010] Further, the second switching valve is a one-way valve. In this solution, when the water delivery system works, the one-way valve controls the disconnection of the water return pipe, and when the water return system works, the one-way valve controls the one-way conduction of the water return pipe to avoid the water flowing back into the water outlet pipeline.

[0011] Further, the output air pressure value of the exhaust device is f1, the one-way valve has a preset opening pressure value f2, and f1 is greater than f2.

[0012] Preferably, the first switching valve is a solenoid valve, the solenoid valve includes a first valve port, a second valve port and a third valve port, the first valve port and the second valve port are connected between the water outlet pipe and the water outlet nozzle, and the third valve port is connected to the input end of the exhaust pipe, so that the solenoid valve can selectively connect the water outlet pipe and the water outlet nozzle, or connect the water outlet pipe and the exhaust pipe. In this solution, when the water supply system works, the solenoid valve conducts the first valve port and the second valve port to connect the water outlet pipe and the water outlet nozzle, and disconnects the first valve port and the third valve port. When the water supply system stops working, the solenoid valve cuts off the channel between the first valve port and the second valve port, connects the first valve port and the third valve port, and connects the air supply pipe and the water outlet pipe. In this way, hot water can be prevented from entering the air supply pipeline.

[0013] Alternatively, the first switching valve is a solenoid valve, the solenoid valve includes a first valve port and a second valve port, the first valve port and the second valve port are connected between the water outlet pipe and the water outlet nozzle, and the output end of the exhaust pipe is located between the first valve port and the water pump. Compared with the above solution, this solution can reduce the procurement cost of the solenoid valve.

[0014] Further, the air outlet of the exhaust device has a preset height, and the preset height is greater than the height of the water supply system.

[0015] Further, the shunt member is disposed adjacent to the water inlet end of the water pump, and the input end of the return water pipe is disposed adjacent to the water outlet end of the water pump. In this solution, the shunt member and the return water pipe are respectively disposed adjacent to the water pump to squeeze the water outside both ends of the water pump into the water cavity.

[0016] Further, it further includes a main body and a water intake cover. The water boiler is assembled on the side of the main body, the upper side of its water cavity is open, the water intake cover is detachably assembled on the upper end of the water cavity, the water outlet pipe is arranged in the main body, the water inlet pipe includes a first water intake pipe and a second water intake pipe arranged on the water intake cover, the second water intake pipe is longitudinally arranged in the water cavity, one end of the first water intake pipe penetrates through the bottom of the water intake cover and is connected to the second water intake pipe, and the other end penetrates into the main body to be connected to the water outlet pipe. The main body and the water intake cover are provided with through holes in cooperation with the first water intake pipe. Description of the Drawings

[0017] Figure 1 is the system block diagram of Embodiment 1;

[0018] Figure 2 is the disassembly of the upper water intake type drinking fountain Figure 1 ;

[0019] Figure 3 is the disassembly of a water intake type drinking fountain Figure 2 ;

[0020] Figure 4 is the overall schematic diagram of a water intake type drinking fountain;

[0021] Figure 5 is the system block diagram of Embodiment 2 of the present invention.

[0022] Label description:

[0023] Water boiler 1, water chamber 11, water inlet pipeline 21, first water intake pipe 211, second water intake pipe 212, water outlet pipeline 22, water pump 23, water outlet nozzle 24, flow dividing member 25, first port 251, second port 252, third port 253, first switching valve 26, first valve port 261, second valve port 262, third valve port 263, exhaust device 31, exhaust pipe 32, return pipe 33, second switching valve 34, main unit 4, water intake cover 5. Specific implementation mode

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by "upper", "lower", "left", "right", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0026] Embodiment 1:

[0027] See Figures 1-4As shown in the figure, this embodiment discloses an upper water intake type drinking fountain with a pneumatic residual water discharge function, which includes a water boiling device, a water delivery system, and a water return system. The water boiling device is provided with a water chamber; the water delivery system includes a water inlet pipeline 21, a water outlet pipeline 22, a water pump 23, a water outlet nozzle 24, and a first switch valve 26. The input end of the water inlet pipeline 21 is communicated with the water chamber 11 of the water boiling device 1, and its output end is connected to the input end of the water outlet pipeline 22. The first switch valve 26 and the water outlet nozzle 24 are arranged at the output end of the water outlet pipeline 22, and the water pump 23 is arranged on the water outlet pipeline 22; the water return system includes an exhaust device 31, an exhaust pipeline 32, a water return pipeline 33, and a second switch valve 34. The input end of the water return pipeline 33 is connected to one side of the water outlet pipeline 22 located at the water outlet end of the water pump 23, and the output end is connected to one side of the water outlet pipeline 22 located at the water inlet end of the water pump 23. The input end of the exhaust pipeline 32 is connected to the gas outlet of the exhaust device 31, and the output end is connected to one side of the water outlet pipeline 22 located at the output end of the water pump 23, so as to squeeze the water in the water outlet pipeline 22 into the water return pipeline 33 through exhaust and then squeeze it into the water inlet pipeline 21, and return to the water chamber 11 through the water inlet pipeline. The second switch valve 34 is arranged on the water return pipeline 33.

[0028] For the convenience of assembly and reducing procurement costs, the above exhaust device 31 is an air pump.

[0029] For the convenience of connecting one end of the water inlet pipeline, the water outlet pipeline, and the recovery pipeline, the above water delivery system further includes a shunt member 25. The shunt member 25 includes a first port 251, a second port 252, and a third port 253. The shunt member 25 is connected to the output end of the water inlet pipeline 21 through the first port 251, connected to the input end of the water outlet pipeline 22 through the second port 252, and connected to the output end of the water return system through the third port 253.

[0030] For the convenience of controlling the water flow direction, the above shunt member 25 is a three-way valve, and the three-way valve can selectively conduct the first port 251 and the second port 252, or the first port 251 and the third port 253.

[0031] To achieve the one-way conduction of the water return system, the above second switch valve 34 is a one-way valve. When the water delivery system works, the one-way valve controls the water return pipeline 33 to be disconnected, and when the water return system works, the one-way valve controls the water return pipeline 33 to conduct unidirectionally, avoiding water from flowing back into the water outlet pipeline 22.

[0032] The output air pressure value of the above exhaust device 31 is f1, the one-way valve has a preset opening pressure value f2, and f1 is greater than f2. The water pump has a preset hydraulic output value f3, and f3 is less than f2.

[0033] For the convenience of connecting the gas path, the return water system and the water outlet system, the above-mentioned first switching valve 26 is a solenoid valve. The solenoid valve includes a first valve port 261, a second valve port 262 and a third valve port 263. The first valve port 261 and the second valve port 262 are connected between the water outlet pipe 22 and the water outlet nozzle 24, and the third valve port 263 is connected to the input end of the exhaust pipe 32, so that the solenoid valve can selectively connect the water outlet pipe 22 and the water outlet nozzle 24, or connect the water outlet pipe 22 and the exhaust pipe 32. In this solution, when the water supply system is working, the solenoid valve conducts the first valve port 261 and the second valve port 262 to connect the water outlet pipe 22 and the water outlet nozzle 24, and disconnects the first valve port 261 and the third valve port 263. When the water supply system stops working, the solenoid valve cuts off the channel between the first valve port 261 and the second valve port 262, and connects the first valve port 261 and the third valve port 263, so that the air supply pipe is connected to the water outlet pipe 22. In this way, hot water can be prevented from entering the air supply pipeline.

[0034] The air outlet of the above-mentioned exhaust device 31 has a preset height, and the preset height is greater than the height of the water supply system, so that water can be effectively prevented from penetrating into the interior of the exhaust device through the air outlet of the exhaust device.

[0035] The above-mentioned shunt member 25 is arranged adjacent to the water inlet end of the water pump 23, and the input end of the return water pipe 33 is arranged adjacent to the water outlet end of the water pump 23. Since the shunt member 25 and the return water pipe 33 are respectively arranged adjacent to the water pump 23, the water on both sides outside the two ends of the water pump 23 is squeezed into the water cavity 11.

[0036] The upper water intake type water dispenser of this embodiment further includes a main body 4 and a water intake cover 5. The water boiler 1 is assembled on the side of the main body 4, the upper side of its water cavity 11 is open, the water intake cover 5 is detachably assembled at the upper end of the water cavity 11, the water outlet pipe 22 is arranged inside the main body 4, the water inlet pipe 21 includes a first water intake pipe 211 and a second water intake pipe 212 arranged on the water intake cover 5, the second water intake pipe 212 is longitudinally arranged inside the water cavity 11, one end of the first water intake pipe 211 penetrates the bottom of the water intake cover 5 and is connected to the second water intake pipe 212, and the other end penetrates into the main body 4 to be connected to the shunt member 25. The main body 4 and the water intake cover 5 are provided with through holes in cooperation with the first water intake pipe 211. Alternatively, the shunt member 25 is arranged inside the water intake cover 5, the input end of the water outlet pipe 22 penetrates into the water intake cover 5 and is connected to the water outlet pipe 22, and the water intake cover 5 and the main body 4 are provided with through holes in cooperation with the water outlet pipe 22.

[0037] The upper water intake type drinking fountain of the present utility model is additionally provided with a water return system. When the water supply system is working, the air port of the exhaust device and the second switch valve 34 are both in a closed state to disconnect the air path and the water return pipe 33, so as to avoid interfering with the operation of the water supply system. At this time, the water pump 23 and the first switch valve 26 are opened simultaneously to transport the drinking water from the water chamber to the water outlet 24 for the user to take. When the water supply system stops working, the water pump 23 and the first switch valve 26 are both closed, thus effectively preventing the drinking water from dripping out of the water outlet 24. At the same time, the second switch valve 34 conducts the water return pipe 33, and the exhaust device transports gas through the exhaust pipe. The air flow sequentially passes through the side of the water outlet pipe 22 at the output end of the water pump 23, the water return pipe 33 and the water inlet pipe 21, squeezing the water in the water supply system into the water chamber of the water boiler, avoiding the problem of residual water in the pipeline, and at the same time preventing the drinking water from dripping out of the input end of the water inlet pipe 21 when the user removes the water intake cover of the machine body.

[0038] Embodiment 2:

[0039] See Figure 5 As shown, the difference between this embodiment and the above embodiment is that the above first switch valve 26 is a solenoid valve, including a first valve port 261 and a second valve port 262. The first valve port 261 and the second valve port 262 are connected between the water outlet pipe 22 and the water outlet 24, and the output end of the exhaust pipe 32 is located between the first valve port 261 and the water pump 23. Compared with the above solution, this solution can reduce the procurement cost of the solenoid valve.

[0040] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. According to the disclosure and teaching of the above specification, those skilled in the art of the present utility model can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims

1. An upper water intake type drinking fountain with pneumatic residual water discharge, characterized in that: A water boiler (1) is provided with a water chamber (11); A water supply system includes a water inlet pipe (21), a water outlet pipe (22), a water pump (23), a water outlet nozzle (24) and a first switching valve (26). The input end of the water inlet pipe (21) communicates with the water chamber (11) of the water boiler (1), and its output end is connected to the input end of the water outlet pipe (22). The first switching valve (26) and the water outlet nozzle (24) are arranged at the output end of the water outlet pipe (22), and the water pump (23) is arranged on the water outlet pipe (22); A water return system includes an exhaust device (31), an exhaust pipe (32), a water return pipe (33) and a second switching valve (34). The input end of the water return pipe (33) is connected to one side of the water outlet pipe (22) located at the water outlet end of the water pump (23), and the output end is connected to one side of the water outlet pipe (22) located at the water inlet end of the water pump (23). The input end of the exhaust pipe (32) is connected to the air outlet of the exhaust device (31), and the output end is connected to one side of the water outlet pipe (22) located at the output end of the water pump (23), so as to squeeze the water in the water outlet pipe (22) into the water return pipe (33) through exhaust and then squeeze it into the water inlet pipe (21), and return to the water chamber (11) through the water inlet pipe. The second switching valve (34) is arranged on the water return pipe (33).

2. The water intake type water dispenser according to claim 1, wherein: The water supply system further includes a shunt member (25). The shunt member (25) includes a first port (251), a second port (252) and a third port (253). The shunt member (25) is connected to the output end of the water inlet pipe (21) through the first port (251), connected to the input end of the water outlet pipe (22) through the second port (252), and connected to the output end of the water return system through the third port (253).

3. The water intake type water dispenser according to claim 2, characterized in that: The shunt member (25) is a three-way valve, and the three-way valve can selectively conduct the first port (251) and the second port (252), or the first port (251) and the third port (253).

4. The water intake type water dispenser according to claim 1, characterized in that: The second switching valve is a one-way valve.

5. The water intake type water dispenser according to claim 4, wherein: The output air pressure value of the exhaust device (31) is f1, the one-way valve has a preset opening pressure value f2, and f1 is greater than f2.

6. The water dispenser with upward water intake according to claim 1, wherein: The first switching valve (26) is a solenoid valve. The solenoid valve includes a first valve port (261), a second valve port (262) and a third valve port (263). The first valve port (261) and the second valve port (262) are connected between the water outlet pipe (22) and the water outlet nozzle (24), and the third valve port (263) is connected to the input end of the exhaust pipe (32), so that the solenoid valve can selectively connect the water outlet pipe (22) and the water outlet nozzle (24), or connect the water outlet pipe (22) and the exhaust pipe (32).

7. The water dispenser with upward water intake according to claim 1, characterized in that: The first switching valve (26) is a solenoid valve, which includes a first valve port (261) and a second valve port (262). The first valve port (261) and the second valve port (262) are connected between the water outlet pipeline (22) and the water outlet nozzle (24), and the output end of the exhaust pipeline (32) is located between the first valve port (261) and the water pump (23).

8. The water intake type water dispenser according to claim 1, characterized in that: The air outlet of the exhaust device (31) has a preset height, and the preset height is greater than the height of the water supply system.

9. The water intake type water dispenser according to claim 2, characterized in that: The shunt member (25) is arranged adjacent to the water inlet end of the water pump (23), and the input end of the return water pipeline (33) is arranged adjacent to the water outlet end of the water pump (23).

10. The water intake type water dispenser according to claim 1, characterized in that: It further includes a main body (4) and a water intake cover (5). The water boiler (1) is assembled on the side of the main body (4), and the upper side of its water chamber (11) is open. The water intake cover (5) is detachably assembled at the upper end of the water chamber (11). The water outlet pipeline (22) is arranged in the main body (4). The water inlet pipeline (21) includes a first water intake pipe (211) and a second water intake pipe (212) provided on the water intake cover (5). The second water intake pipe (212) is longitudinally arranged in the water chamber (11). One end of the first water intake pipe (211) penetrates the bottom of the water intake cover (5) to be connected to the second water intake pipe (212), and the other end penetrates into the main body (4) to be connected to the water outlet pipeline (22). The main body (4) and the water intake cover (5) are provided with through holes in cooperation with the first water intake pipe (211).

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