Upper water taking type water dispenser with residual water backflow 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 residual water backflow function, the water dispenser is provided with a three-way assembly and an exhaust system, an exhaust pipeline in the exhaust system is communicated with a water inlet pipeline through a third port of the three-way assembly, and when the third port is opened, the water inlet pipeline is communicated with the water outlet pipeline. When the third port is closed, the water inlet pipeline is isolated from the atmospheric pressure, air tightness is guaranteed, the water pump can normally pump water, in an actual scene, the water inlet pipeline can be arranged in the detachable water taking cover, and the water taking cover is convenient to use. And the backflow of residual water in the water inlet pipeline is controlled by controlling the opening time of the third port, so that no residual water leaks when the water taking cover is opened, and the water taking cover is safer and more reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and particularly relates to an upper-water-taking type drinking machine with a residual water reflux function. Background Art

[0002] The existing upper-water-taking type drinking machine includes a main body, a boiling kettle and a water-taking cover. The main body is provided with a water outlet nozzle and a water pump. The boiling kettle is provided with a water storage cavity with an open upper side. During use, water is added into the water storage cavity, and the water-taking cover is covered on the upper end of the water storage cavity. Since the water-taking cover is provided with a water delivery pipeline connecting the water outlet nozzle and the water storage cavity, when the water is heated to boiling, starting the water pump can deliver the water in the water storage cavity to the water outlet nozzle through the waterway on the water-taking cover for output. However, in the existing upper-water-taking type drinking machine, when the water pump stops, water will remain in the water delivery pipeline. Once the water-taking cover is disassembled, the remaining water will flow out through the interface on it, so it is easy to scald the user. Therefore, it is very necessary to develop an upper-water-taking type drinking machine with a residual water reflux function to improve safety. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an upper-water-taking type drinking machine with a residual water reflux function.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An upper-water-taking type drinking machine with a residual water reflux function includes a water boiling device, a water inlet system, a water outlet system and an exhaust system. The water boiling device is provided with a water storage cavity and a heating component for heating the water storage cavity. The water inlet system includes an upper water pipe placed in the water storage cavity and a water inlet pipeline connected to the upper water pipe. The water outlet system includes a three-way component, a water outlet pipeline, a water pump and a water outlet nozzle. The three-way component is 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 exhaust system includes an exhaust pipeline connected to the third port, and the third port can be controllably opened or closed.

[0006] Compared with the prior art, the water dispenser provided by the utility model is provided with a three-way component and an exhaust system. The exhaust pipe in the exhaust system is communicated with the water inlet pipe through the third port of the three-way component. When the third port is opened, the atmospheric pressure is communicated with the water inlet pipe. Therefore, the residual water in the water inlet pipe will flow back to the water storage cavity. When the third port is closed, the water inlet pipe is isolated from the atmospheric pressure, ensuring airtightness. Therefore, the water pump can normally pump water. In an actual scenario, the water inlet pipe can be arranged in a detachable water intake cover, and the reflux of the residual water in the water inlet pipe can be controlled by controlling the opening time of the third port. 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.

[0007] Further, the three-way component is a three-way solenoid valve; alternatively, as an alternative solution, the three-way component includes a three-way valve and a switching valve. Two of the ports of the three-way valve form the first port and the second port, and the other port is connected to one port of the switching valve. The other port of the switching valve forms the third port.

[0008] Further, the water storage cavity is provided with a maximum water level line, and the water pump and the three-way component are higher than the maximum water level line.

[0009] Further, it further includes a main body and a water intake cover. The boiling water device is assembled on the side of the main body, and the upper side of its water storage cavity is open. The water outlet system is arranged in the main body. The upper end of the main body is provided with a first interface communicated with the first port. The water intake cover is detachably covered on the upper end of the water storage cavity. The water inlet pipe is arranged inside the water intake cover. The bottom of the water intake cover is provided with a second interface communicated with the water inlet pipe corresponding to the first interface. The second interface is detachably and hermetically connected to the first interface.

[0010] Further, an installation convex part extends from the side of the water intake cover. The upper end of the main body is provided with a limit groove adapted to the installation convex part. The first interface is arranged in the limit groove. The second interface is arranged at the bottom of the installation convex part. The second interface is connected to the first interface as the installation convex part cooperates with the limit groove.

[0011] Further, a bracket is arranged on the side of the water storage cavity. The water supply pipe is assembled on the bracket. The bottom of the water intake cover is provided with a third interface communicated with the water inlet pipe corresponding to the water supply pipe. The third interface is detachably and hermetically connected to the upper end of the water supply pipe.

[0012] Further, the exhaust pipeline extends upward to form a vent port located above the water inlet system and communicating with the atmosphere. A filtering device is provided at the vent port. The filtering device includes a filter element for blocking dirt in the air, and the filter element is set as filter cotton; alternatively, the material of the filter element includes at least one of the following materials: activated carbon, HEPA filter material, polyester non-woven fabric, polypropylene, so as to effectively isolate foreign objects from entering the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of an upper water intake type drinking fountain;

[0014] Figure 2 is an exploded view of an upper water intake type drinking fountain Figure 1 ;

[0015] Figure 3 is a schematic structural view of a water pump and a three-way assembly of an upper water intake type drinking fountain;

[0016] Figure 4 is an exploded view of an upper water intake type drinking fountain Figure 2 ;

[0017] Figure 5 is an exploded view of an upper water intake type drinking fountain Figure 3 ;

[0018] Figure 6 is a schematic structural view of a first setting mode of the three-way assembly;

[0019] Figure 7 is a schematic structural view of a second setting mode of the three-way assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following is a description of a preferred specific embodiment of the present invention with reference to the accompanying drawings.

[0021] Refer to Figures 1 to 6 , this embodiment provides an upper water intake type drinking fountain with a residual water reflux function, including a main body 5, a water boiling device 1, a water intake cover 6, a water inlet system, a water outlet system and an exhaust 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.

[0022] Refer to 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 provided on the main machine 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 provided on the water outlet pipeline 32 for driving the water body to flow toward one side of the water outlet nozzle 34.

[0023] 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 provided inside the water intake cover 6. A first interface 51 communicated with the first port 301 is provided at the upper end of the main machine 5. A second interface 61 communicated with the water inlet pipeline 22 is provided at the bottom of the water intake cover 6 corresponding to the first interface 51. The second interface 61 is detachably and hermetically connected to the first interface 51, thereby communicating the first port 301 with the water inlet pipeline 22.

[0024] See Figure 3 and Figure 6 , the exhaust system includes an exhaust pipeline 41 connected to the third port 303. The exhaust pipeline 41 extends upward to form a vent port 42 located above the water inlet system and communicated with the atmospheric pressure. The third port 303 can be controllably opened or closed.

[0025] Compared with the prior art, in the present utility model, by providing the exhaust pipeline 41 connected to the third port 303, since the vent port 42 is formed at the top end of the exhaust pipeline 41 and is located above the water inlet system, that is, the vent port 42 is at the highest position in all waterways. When the water pump 33 is started, by controlling the third port 303 to remain closed, the air pressure in the waterway is sealed, ensuring that the water body can be transported to the water outlet nozzle 34 through the water inlet system; and when the third port 303 is actively opened, the atmospheric pressure is communicated with the water inlet pipeline 22 through the exhaust pipeline 41, thereby driving the residual water in the water inlet pipeline 22 to flow back to the water storage cavity 11. Therefore, the opening time of the third port 303 can be flexibly set to control the backflow of the residual water, ensuring that there is no residual water dripping when the water intake cover 6 is opened. For example, after each operation of the water pump 33 is completed, the third port 303 is automatically opened for a period of time to allow the residual water to flow back, avoiding the residual water flowing out and hurting people when the water intake cover 6 is opened. Therefore, the safety is improved.

[0026] Two setting methods of the three-way component 31 are provided in this embodiment:

[0027] See Figure 6 , as the first method, the three-way component 31 is a three-way solenoid valve 311. This setting method can realize the opening and closing of the third port 303 only through one three-way solenoid valve 311.

[0028] See Figure 7, as a second method, the three-way component 31 includes a three-way valve 312 and a switching valve 313. Two of the ports in the three-way valve 312 form the first port 301 and the second port 302, and the other port is connected to one port of the switching valve 313. The other end of the switching valve 313 forms the above-mentioned third port 303. Since the first port 301 and the second port 302 are in an open state all the time, and this setting method uses an ordinary three-way valve 312 combined with a controllable switching valve 313 to form the three-way component 31, there is no need to use a relatively expensive three-way solenoid valve 311.

[0029] See Figure 6 and Figure 7 , in order to ensure that the water body can flow back, the water storage cavity 11 is provided with a maximum water level line 12, and the water pump 33 and the three-way component 31 are higher than the maximum water level line 12.

[0030] See Figure 2 、 Figure 4 and Figure 5 , an installation convex part 62 extends from the side of the water intake cover 6. A limiting 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 limiting 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 limiting 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.

[0031] 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 pipeline 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 communicating with the third interface 211. The above structure of setting the water supply pipe 21 and the water intake cover 6 as 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.

[0032] 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.

[0033] See Figure 4, a mounting base 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 mounting base 53, and the shape of the side part 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.

[0034] As an improved solution, a filtering device is provided at the vent, and 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, and the silver ion filter cotton has effective antibacterial property and filtering property, and can effectively filter bacteria and foreign matters, such as sand, dust, 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, polypropylene, so as to effectively isolate foreign matters from entering the pipeline.

[0035] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. 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 invention.

Claims

1. A top-intake drinking fountain with residual water reflux function, characterized in that: The invention comprises a water boiling device (1), a water inlet system, a water outlet system and an exhaust 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) disposed 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 three-way assembly (31), a water outlet pipeline (32), a water pump (33) and a water outlet nozzle (34). The three-way assembly (31) is provided with a heating component for heating the water storage chamber (11). A first port (301), a second port (302) and a third port (303) are provided, 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), the first port (301) is connected to the water inlet pipeline (22), the exhaust system comprises an exhaust pipeline (41) connected to the third port (303), and the third port (303) can be controlled to be opened or closed.

2. The top-intake water dispenser according to claim 1, characterized in that: The three-way component (31) is a three-way solenoid valve (311).

3. The top-intake water dispenser according to claim 1, characterized in that: The three-way component (31) comprises a three-way valve (312) and a switch valve (313), two ports of the three-way valve (312) constitute the first port (301) and the second port (302), the other port of the three-way valve (312) is connected to one port of the switch valve (313), and the other port of the switch valve (313) constitutes the third port (303).

4. The top-intake water dispenser according to claim 1, characterized in that: The water storage chamber (11) is provided with a maximum water level line (12), and the water pump (33) and the three-way assembly (31) are higher than the maximum water level line (12).

5. 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).

6. The top-intake water dispenser according to claim 5, 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).

7. The top-intake water dispenser according to claim 5, 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).

8. The top-intake water drinking machine according to claim 7, characterized in that: The outer side of the water boiling device (1) is provided with a handle (7), the upper end of the handle (7) is provided with a hanging ear (71) hung on the top edge of the water storage chamber (11), and the bracket (13) is connected to the hanging ear (71).

9. The top-intake water dispenser according to claim 5, characterized in that: A mounting seat (53) is provided at the outer bottom of the main unit (5); the water boiling device (1) is detachably placed on the upper side of the mounting seat (53); and the shape of the side of the main unit (5) is configured to match the outer contour of the water boiling device (1).

10. The top-intake water drinking machine according to claim 1, characterized in that: The exhaust pipe (41) extends upward to form a vent (42) located above the water inlet system and used for communicating with atmospheric pressure, and the vent (42) is provided with a filter device, and the filter device includes a filter element for blocking dirt in the air, and the filter element is configured as filter cotton; Alternatively, 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.

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