Upper water taking type water dispenser with pneumatic water return function

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to an upward water taking type water dispenser with a pneumatic water return function, which is characterized in that an air pump has a non-return function, and an air inlet and an air outlet of the air pump are not communicated in a closed state, so that water cannot flow to the air inlet of the air pump through a water return pipeline in the state; once the air pump is started, air can be actively pumped from the outside through the air inlet and conveyed to the water return pipeline through the air outlet, so that residual water in the water return pipeline and the water inlet pipeline is squeezed back to the water storage cavity through the air pressure, and the water return function is achieved. The water inlet pipeline can be arranged in the detachable water taking cover, backflow of residual water in the pipeline can be controlled by controlling the starting time of the air pump, for example, the air pump is kept closed when the water pump works, and after the water pump stops, the air pump is started for a period of time to squeeze the residual water back to the water storage cavity, so that no residual water leaks when the water taking cover is opened, and the water taking cover is convenient to use. The safety and reliability are higher.

Description

Technical Field

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

[0002] The existing upper water intake type water dispenser consists of a main unit, a boiling water kettle and a water intake cover. The main unit is equipped with a water outlet nozzle and a water pump, while the boiling water kettle has a water storage cavity with an open top. When in use, the user needs to inject water source into the water storage cavity and cover the water intake cover to seal the water storage cavity. The water intake cover is specially designed with a water delivery pipeline connected to the water outlet nozzle and the water storage cavity. When the water is heated to the boiling state, starting the water pump can lead the water from the water storage cavity to the water outlet nozzle through the water circuit system in the water intake cover, thus completing the water intake process.

[0003] However, there is a safety hazard in the current upper water intake type water dispenser: after the water pump stops working, a part of water will remain in the water delivery pipeline. If the user removes the water intake cover at this time, this part of the remaining water may flow out from the interface of the water intake cover, bringing the risk of scalding to the user. Therefore, in order to enhance the use safety, it is urgent to develop a new type of upper water intake type water dispenser, which should have the function of residual water backflow, so as to effectively avoid scalding accidents. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an upper water intake type water dispenser with a pneumatic water return function.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An upper water intake type water dispenser with a pneumatic water return function, including a water boiling device, a water inlet system, a water outlet system and a water return system. The water boiling device is configured with a water storage cavity and a heating component for heating the water storage cavity. The water inlet system includes an upper water pipe arranged in the water storage cavity and a water inlet pipeline connected to the upper water pipe. The water outlet system includes a water outlet pipeline, a water pump, a water outlet nozzle and a three-way component configured with a first port, a second port and a third port. The water outlet pipeline is connected to the second port and the water outlet nozzle. The water pump is arranged on the water outlet pipeline. The first port is connected to the water inlet pipeline. The water return system includes a water return pipeline connected to the third port and an air pump, and the air pump is connected to the water return pipeline.

[0007] Compared with the prior art, the water dispenser provided by the utility model is provided with a tee component and a water return system. Since the air pump of the water return system has a check valve function, when it is in the closed state, the air inlet and the air outlet of the air pump are not connected. Therefore, in this state, water cannot flow through the water return pipeline to the air inlet of the air pump, ensuring that the water pipeline is not connected to the atmospheric pressure. Once the air pump is started, it will actively draw air from the outside through its air inlet and transport it to the water return pipeline through the air outlet, thereby squeezing the residual water in the water return pipeline and the water inlet pipeline back into the water storage cavity through air pressure to achieve the function of water return. In an actual scenario, the water inlet pipeline can be arranged in a detachable water intake cover, and the reflux of the residual water in the pipeline can be controlled by controlling the starting time of the air pump. For example, the air pump is kept closed when the water pump is working, and when the water pump stops, the air pump is started for a period of time to squeeze the residual water back into the water storage cavity. Therefore, it can be realized that there is no dripping of residual water when the water intake cover is opened, which is safer and more reliable.

[0008] Further, the air outlet of the air pump is connected to the water return pipeline, and a filtering device is arranged at the air inlet of the air pump. The filtering device includes a filter element for blocking dirt in the air. The filter element is set as filter cotton. Preferably, the filter cotton is silver ion filter cotton. Silver ion filter cotton has effective antibacterial and filtering properties, and can effectively filter bacteria and foreign objects, such as sand, dust, insects, etc.; or, the material of the filter element includes at least one of the following materials: activated carbon, HEPA filter material, polyester non-woven fabric, polypropylene.

[0009] Further, the tee component is a three-way valve or a three-way solenoid valve.

[0010] Further, a waterproof breathable membrane is arranged at the air inlet of the air pump to prevent water leakage.

[0011] Further, in order to improve the water return effect, the air inlet of the air pump is higher than the highest water level of the water inlet system and the water outlet system. This setting method can make the air inlet of the air pump located at the highest position of the water pipeline, forming a hydraulic difference. Therefore, when the air pump is started, the residual water will be driven to flow back due to the hydraulic difference, improving the effect of the water return. Description of the Drawings

[0012] Figure 1 Is a perspective view of an up-drawing type water dispenser;

[0013] Figure 2 Is the decomposition of the up-drawing type water dispenser Figure 1 ;

[0014] Figure 3 Is a structural schematic diagram of the water pump, tee component, and air pump of the up-drawing type water dispenser;

[0015] Figure 4 Is the decomposition of the up-drawing type water dispenser Figure 2 ;

[0016] Figure 5 Disassembly of the top-water intake type water dispenser Figure 3 ;

[0017] Figure 6 Schematic diagram of the water circuit structure of the top-water intake type water dispenser Specific implementation mode

[0018] The following combines the accompanying drawings to illustrate a preferred specific implementation mode of the present utility model

[0019] See Figures 1 to 6 , this embodiment provides a top-water intake type water dispenser with a pneumatic backwater function, including a main unit 5, a water boiling device 1, a water intake cover 6, a water inlet system, a water outlet system and a backwater system. The water boiling device 1 is provided with a water storage cavity 11 and a heating component for heating the water storage cavity 11. The water inlet system includes an upper water pipe 21 arranged in the water storage cavity 11 and a water inlet pipeline 22 connected to the upper water pipe 21

[0020] See Figure 3 and Figure 6 , the water outlet system includes a three-way component 31, a water outlet pipeline 32, a water pump 33 and a water outlet nozzle 34 arranged on the main unit 5. The three-way component 31 is configured with a first port 301, a second port 302 and a third port 303. The water outlet pipeline 32 is connected to the second port 302 and the water outlet nozzle 34. The water pump 33 is arranged on the water outlet pipeline 32 and is used to drive the water body to flow towards one side of the water outlet nozzle 34. The three-way component 31 can be a three-way valve or a three-way solenoid valve

[0021] See Figures 2 to 6 , the upper side of the water storage cavity 11 is open, the water intake cover 6 is detachably covered on the upper end of the water storage cavity 11, the water inlet pipeline 22 is arranged inside the water intake cover 6, a first interface 51 communicated with the first port 301 is arranged at the upper end of the main unit 5, a second interface 61 communicated with the water inlet pipeline 22 is arranged at the bottom of the water intake cover 6 corresponding to the first interface 51, and the second interface 61 is detachably and hermetically connected to the first interface 51, so as to communicate the first port 301 with the water inlet pipeline 22

[0022] See Figure 3 and Figure 6 , the backwater system includes a return water pipeline 41 connected to the third port 303 and an air pump 42. The air outlet 421 of the air pump 42 is connected to the return water pipeline 41, and its air inlet 422 is communicated with the atmospheric pressure

[0023] Compared with the prior art, the water dispenser provided by the utility model is provided with a three-way component 31 and a water return system. Since the air pump 42 of the water return system has a check valve function, when it is in the closed state, the air inlet 422 and the air outlet 421 of the air pump 42 are not connected. Therefore, in this state, water cannot flow through the water return pipeline 41 to the air inlet 422 of the air pump, ensuring that the water path is not connected to the atmospheric pressure. Once the air pump 42 is started, it will actively draw air from the outside through its air inlet 422 and transport it to the water return pipeline 41 through the air outlet 421, thereby squeezing the residual water in the water return pipeline 41 and the water inlet pipeline 22 back into the water storage cavity 11 through air pressure to achieve the function of water return. In an actual scenario, the water inlet pipeline 22 can be arranged in the detachable water intake cover 6, and the reflux of the residual water in the pipeline can be controlled by controlling the starting time of the air pump 42. For example, when the water pump 33 is working, the air pump is kept closed. After the water pump 33 stops, the air pump 42 is started for a period of time to squeeze the residual water back into the water storage cavity 11. Therefore, it is possible to achieve no dripping of residual water when the water intake cover 6 is opened, which is safer and more reliable.

[0024] Preferably, the air inlet 422 of the air pump 42 is higher than the highest water level of the water inlet system and the water outlet system. This setting method can make the air inlet 422 of the air pump located at the highest position of the water path, forming a hydraulic difference. Therefore, when the air pump 42 is started, the residual water will be driven to flow back due to the hydraulic difference, improving the effect of water return.

[0025] As an improved solution, a filtering device 43 is provided at the air inlet 422 of the air pump 42. The filtering device 43 includes a filter element for blocking dirt in the air. The filter element is set as filter cotton. Preferably, the filter cotton is silver ion filter cotton. Silver ion filter cotton has effective antibacterial and filtering properties, and can effectively filter bacteria and foreign objects, such as sand, dust, and insects; or, the material of the filter element includes at least one of the following materials: activated carbon, HEPA filter material, polyester non-woven fabric, and polypropylene.

[0026] As an improved solution, a waterproof and breathable membrane is provided at the air inlet 422 of the air pump 42. The filtering accuracy of the waterproof and breathable membrane is between ultrafiltration and nanofiltration, that is, between 0.1 micron and 0.01 micron. It can allow air to enter but not leak water, thereby preventing water leakage.

[0027] See Figure 2 、 Figure 4 and Figure 5, an installation convex part 62 extends from the side of the water intake cover 6. A limit groove 52 adapted to the installation convex part 62 is provided at the upper end of the main body 5. The first interface 51 is arranged in the limit groove 52, and the second interface 61 is arranged at the bottom of the installation convex part 62. The second interface 61 is connected to the first interface 51 with the cooperation of the installation convex part 62 and the limit groove 52. The above structure facilitates the installation and positioning of the water intake cover 6, and enables the operator to more easily align the first interface 51 and the second interface 61.

[0028] See Figure 4 and Figure 5 , a bracket 13 is provided on the side of the water storage cavity 11. The water supply pipe 21 is assembled on the bracket 13. A third interface 211 communicating with the water inlet pipe 22 is provided at the bottom of the water intake cover 6 corresponding to the water supply pipe 21. The third interface 211 is detachably and sealingly connected to the upper end of the water supply pipe 21. Preferably, the water supply pipe 21 and the bracket 13 are of an integral structure, and the water supply pipe 21 penetrates through the surface of the bracket 13 to form a port with the third interface 211. The above structure of setting the water supply pipe 21 and the water intake cover 6 to be separable can facilitate the disassembly of the water intake cover 6 and avoid the difficulty of taking out the water supply pipe 21 due to its excessive length.

[0029] See Figure 4 , a handle 7 is provided on the outside of the water boiling device 1. A hanging ear 71 hanging on the top edge of the water storage cavity 11 is provided at the upper end of the handle 7. The bracket 13 is connected to the hanging ear 71.

[0030] See Figure 4 , an installation seat 53 is provided at the outer bottom of the main body 5. The water boiling device 1 is detachably placed on the upper side of the installation seat 53. The shape of the side of the main body 5 is set to be adapted to the outer contour of the water boiling device 1. This structure can make the overall appearance of the water dispenser more compact.

[0031] According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model pertains 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. A top-intake drinking fountain with pneumatic water return function, characterized in that: The invention comprises a water boiling device (1), a water inlet system, a water outlet system and a water return system. The water boiling device (1) is provided with a water storage chamber (11) and a heating component for heating the water storage chamber (11). The water inlet system comprises an upper water pipe (21) arranged in the water storage chamber (11) and a water inlet pipeline (22) connected to the upper water pipe (21). The water outlet system comprises a water outlet pipeline (32), a water pump (33), a water outlet nozzle (34), and a first port (301), a second port (302) and a water outlet nozzle (34). The invention relates to a three-way assembly (31) having a first port (302) and a third port (303), wherein the water outlet pipe (32) is connected to the second port (302) and the water outlet nozzle (34), the water pump (33) is arranged on the water outlet pipe (32), the first port (301) is connected to the water inlet pipe (22), and the return water system comprises a return water pipe (41) connected to the third port (303), and an air pump (42), and the air pump (42) is connected to the return water pipe (41).

2. The top-intake water dispenser according to claim 1, characterized in that: The air outlet (421) of the air pump (42) is connected to the water return pipeline (41), and the air inlet (422) thereof is provided with a filtering device (43).

3. The top-intake water dispenser according to claim 2, characterized in that: The filtering device (43) comprises a filter element for blocking dirt in the air, and the filter element is configured as filter cotton.

4. The top-intake water dispenser according to claim 3, characterized in that: The filter cotton is silver ion filter cotton.

5. The top-intake water dispenser according to claim 2, characterized in that: The filtering device (43) comprises a filter element for blocking dirt in the air, and the material of the filter element comprises at least one of the following materials: activated carbon, HEPA filter material, polyester non-woven fabric, and polypropylene.

6. The top-intake water dispenser according to claim 1, characterized in that: The air inlet (422) of the air pump (42) is provided with a waterproof and breathable membrane; And / or, the three-way component (31) is a three-way valve or a three-way solenoid valve.

7. The top-intake water dispenser according to claim 1, characterized in that: The air inlet (422) of the air pump (42) is higher than the highest water level of the water inlet system and the water outlet system.

8. The top-intake water dispenser according to claim 1, characterized in that: The invention also comprises a main unit (5) and a water intake cover (6), wherein the water boiling device (1) is mounted on the side of the main unit (5), the upper side of the water storage chamber (11) of the main unit (5) is open, the water outlet system is arranged in the main unit (5), the upper end of the main unit (5) is provided with a first interface (51) in communication with the first port (301), the water intake cover (6) is detachably arranged on the upper end of the water storage chamber (11), the water inlet pipeline (22) is arranged inside the water intake cover (6), the bottom of the water intake cover (6) is provided with a second interface (61) in communication with the water inlet pipeline (22) corresponding to the first interface (51), and the second interface (61) is detachably sealed and connected to the first interface (51).

9. The top-intake water drinking machine according to claim 8, characterized in that: A mounting protrusion (62) extends from the side of the water inlet cover (6); a limiting groove (52) adapted to the mounting protrusion (62) is provided at the upper end of the main unit (5); the first interface (51) is arranged in the limiting groove (52); the second interface (61) is arranged at the bottom of the mounting protrusion (62); and the second interface (61) is connected to the first interface (51) as the mounting protrusion (62) cooperates with the limiting groove (52).

10. The top-intake water drinking machine according to claim 8, characterized in that: A bracket (13) is provided on the side of the water storage chamber (11), the upper water pipe (21) is mounted on the bracket (13), and a third interface (211) communicating with the water inlet pipeline (22) is provided at the bottom of the water intake cover (6) corresponding to the upper water pipe (21), and the third interface (211) is detachably sealedly connected to the upper end of the upper water pipe (21).

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