Liquid heater capable of emptying residual liquid in pipe

Abstract

The utility model relates to a liquid heater capable of emptying residual liquid in a pipe, and belongs to the technical field of small household appliances. The device comprises a base and an electric heating container, the base and the electric heating container are in detachable coupling connection through an electric coupler with a water passing channel, a water inlet of the water passing channel is communicated with a liquid storage inner cavity of the electric heating container, and a water outlet of the water passing channel is communicated with a liquid outlet through a water pump; a control valve is further arranged in the base and located on a pipeline between the water outlet of the water passing channel and the water pump. The control valve is provided with a water inlet end, a drainage end and an air inlet end communicated with the atmosphere, the water inlet end of the control valve is communicated with the water outlet of the water passing channel through a pipeline, the drainage end of the control valve is connected with the liquid inlet of the water pump through a pipeline, and the liquid outlet of the water pump is communicated with the liquid outlet through a conveying pipeline. When the water inlet end of the control valve is closed and the drainage end is communicated with the air inlet end, the water pump pumps external air to empty residual liquid in the conveying pipeline, so that bacterium breeding can be reduced, and the drinking safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, in particular to a liquid heater capable of draining residual liquid in a pipe. Background Art

[0002] As a common kitchen appliance in people's daily life, electric kettles have various water outlet modes, especially electric pump suction water outlet mode. For example, the water outlet structure of an electric kettle with announcement number CN207590498U includes a base, an inner tank, an electric pump and a water outlet. The inner tank and the electric pump are respectively arranged on the base. The water outlet is connected with the inner tank, and water is pumped from the inner tank by the electric pump. This structure makes it easy to operate and safe to use, and is welcomed by consumers.

[0003] However, in the above structure, since the electric pump and the water outlet are connected by a delivery pipe, the delivery pipe itself has a certain length. When the electric pump stops working, the liquid in the pipe cannot be completely discharged and accumulates. For electric kettles used at long intervals, the accumulated liquid in the pipe is prone to breed bacteria, affecting physical health and safety. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a liquid heater capable of draining the remaining liquid in a pipe, thereby reducing the health and safety risks caused by the accumulation of liquid in the pipe.

[0005] The utility model adopts the following technical solutions:

[0006] A liquid heater capable of draining excess liquid in a pipe comprises a base and an electric heating container, wherein the base and the electric heating container are detachably coupled via an electric coupler with a water passage, wherein a water inlet of the water passage is communicated with a liquid storage cavity of the electric heating container, and a water outlet of the water passage is communicated with a liquid discharge port via a water pump; a control valve is further arranged in the base, and the control valve is located on a pipeline between the water outlet of the water passage and the water pump; the control valve comprises a water inlet end, a water discharge end, and an air inlet end communicated with the atmosphere, wherein the water inlet end of the control valve is communicated with the water outlet of the water passage via a pipeline, the water discharge end of the control valve is connected with the liquid inlet of the water pump via a pipeline, and the liquid outlet of the water pump is communicated with the liquid discharge port via a delivery pipeline;

[0007] When the water inlet end of the control valve is closed and the drain end is connected to the air inlet end, the water pump sucks the external gas and discharges it in turn through the air inlet end and the drain end to the drain port to empty the remaining liquid in the delivery pipeline.

[0008] Furthermore, an ultraviolet disinfection device is also provided on the conveying pipeline.

[0009] Furthermore, the ultraviolet disinfection device comprises a disinfection box with an ultraviolet lamp therein, a transparent conduit is provided in the disinfection box, the transparent conduit is connected to the conveying pipeline, and the ultraviolet lamp can irradiate the transparent conduit.

[0010] Furthermore, the disinfection box comprises an upper box body and a lower box body, the upper box body and the lower box body are connected by a fastener, and the lower box body is provided with a through hole for the transparent catheter to pass through.

[0011] Furthermore, the transparent conduit is a quartz glass tube.

[0012] Furthermore, the control valve is a solenoid valve.

[0013] Furthermore, an air filter device is connected to the air inlet end of the control valve, and the air filter device includes a filter box with air vents, and one or more layers of filter foam are arranged in the filter box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] On the one hand, by setting a control valve, the switching of the drainage end, the air intake end and the water intake end can be controlled, and the remaining liquid in the delivery pipeline can be emptied through external gas to prevent the accumulation of remaining liquid, reduce bacterial growth and improve drinking safety.

[0016] On the other hand, by installing an ultraviolet disinfection device on the conveying pipeline, the bactericidal effect of ultraviolet rays can also be used to reduce the growth of bacteria in the pipe.

[0017] In addition, the provision of an air filter device can reduce the entry of foreign matter such as external pollution particles into the delivery pipeline, further improving the drinking safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the appearance structure of a liquid heater capable of draining excess liquid in a pipe according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the longitudinal cross-sectional structure of a liquid heater capable of draining excess liquid in a pipe according to the utility model;

[0020] Figure 3 yes Figure 2 Schematic diagram of the local cross-section structure in the AA direction;

[0021] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the BB direction.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. electric heating container; 3. electric coupler; 31. water passage; 4. heating plate; 5. water pump; 6. control valve; 61. water inlet end; 62. drainage end; 63. air inlet end; 7. delivery pipeline; 8. drainage port; 9. ultraviolet disinfection device; 91. disinfection box; 91a. upper box body; 91b. lower box body; 92. through hole; 93. ultraviolet lamp; 94. transparent conduit; 10. air filter device; 11. filter box; 12. filter foam; 100. bottom support. DETAILED DESCRIPTION

[0023] In order to make the present invention more clear, the following is a further description of a liquid heater capable of draining residual liquid in a tube according to the present invention in conjunction with the accompanying drawings. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] like Figures 1 to 3 As shown, a liquid heater capable of draining the remaining liquid in a tube comprises a zigzag base 1, which is made of engineering plastic and has a cavity for accommodating parts. An electric heating container 2 is detachably connected to the bearing surface on the lower side of the base 1. The electric heating container 2 is cylindrical in shape as a whole and has an openable upper cover and a cavity for accommodating liquid. An upper seat of an electric coupler 3 is provided at the bottom of the electric heating container 2, and the upper seat of the electric coupler 3 is electrically connected to the heating plate 4 inside the electric heating container 2; a lower seat of the electric coupler 3 is provided on the corresponding bearing surface of the base 1, and the lower seat of the electric coupler 3 is electrically connected to a control circuit board (not shown in the figure), and the control circuit board is electrically connected to a control panel arranged on the side of the higher side of the base 1, and the use of the device is controlled by manually operating the control panel. The upper and lower seats of the electric coupler 3 are both provided with a detachable plug-in water passage 31. The upper end (water inlet) of the water passage 31 in the upper seat is connected to the liquid-containing cavity of the electric heating container 2, and the lower end (water outlet) of the water passage 31 in the lower seat is connected to the liquid inlet of the water pump 5 through a pipeline. The water pump 5 is located inside the base 1. Here, the electric coupler 3 with the water passage 31 is a prior art, and is mostly used in water-supplying electric kettles. When the upper and lower seats of the electric coupler 3 are coupled, the water passage 31 is in a conducting state. When the two are separated, the water passage 31 is in a blocking state to prevent the electric heating container 2 from leaking.

[0025] The base 1 is also provided with a control valve 6, which is located on the pipeline between the water outlet of the water passage 31 and the water pump 5. Specifically, the control valve 6 has a water inlet end 61, a water outlet end 62 and an air inlet end 63 connected to the atmosphere. The water inlet end 61 of the control valve 6 is connected to the water outlet of the water passage 31 through a hose, the water outlet end 62 of the control valve 6 is connected to the liquid inlet of the water pump 5 through a hose, and the liquid outlet of the water pump 5 is connected to the liquid discharge port 8 through a delivery pipe 7. The liquid discharge port 8 has a downward nozzle, which is located at a higher side end of the base 1. A bottom bracket 100 detachably connected to the base 1 is provided at the lower side of the liquid discharge port 8. Preferably, the control valve 6 is a solenoid valve. When the water inlet end 61 of the control valve 6 is closed and the air inlet end 63 is connected to the water outlet end 62, the water pump 5 pumps the external gas and discharges it through the air inlet end 63 and the water outlet end 62 to the liquid discharge port 8 in sequence, so as to empty the residual liquid in the delivery pipe 7.

[0026] Furthermore, in order to reduce the growth of bacteria in the delivery pipeline 7, an ultraviolet disinfection device 9 is also provided on the delivery pipeline 7. Figure 3 , Figure 4 As shown, the ultraviolet disinfection device 9 includes a disinfection box 91, and a transparent conduit 94 with two ends extending outward is provided in the length direction of the disinfection box 91. The transparent conduit 94 is a hard straight tube. In this embodiment, a quartz glass tube with good ultraviolet light transmittance is selected. The two ends of the quartz glass tube are respectively connected to the ends of the conveying pipe 7, so that the quartz glass tube serves as a part of the transmission line of the conveying pipe 7. An ultraviolet lamp 93 that can irradiate the transparent conduit 94 is provided in the disinfection box 91, and the ultraviolet lamp 93 is electrically connected to a control circuit board (not shown in the figure).

[0027] Preferably, considering the assemblability of the ultraviolet disinfection device 9, the disinfection box 91 includes an upper box body 91a and a lower box body 91b, and the upper and lower box bodies are detachably fixedly connected by fasteners such as screws. Among them, a through hole 92 for the transparent conduit 94 to pass through and a connection part for threaded connection with the fastener are provided in the lower box body 91b.

[0028] In some embodiments, considering that the air sucked in from the air inlet end 63 of the control valve 6 may contain large particles of dust and other foreign matter, in order to prevent foreign matter from contaminating the inside of the delivery pipe 7, an air filter device 10 is also connected to the air inlet end 63 through a pipeline. Preferably, the air filter device 10 includes a filter box 11 with a vent, and one or more layers of filter foam 12 are arranged in the filter box 11. The filter foam 12 can filter large particles of dust while reducing the obstruction to the air flow. The filter box 11 can be clamped in the groove of the base 1 shell through a snap structure, and the base 1 also has a hole connected to the outside on the corresponding shell. Of course, the filter box 11 can also be fixed to the base 1 shell in other ways, such as fastener connection, adhesive connection, etc.

[0029] The working process of this device is as follows: first, water is added to the electric heating container 2 and placed on the base 1 to form an electrical coupling, and then the electric heating container 2 heats the water to the set temperature; when water needs to be collected for drinking, the amount of water collected is controlled through the operation panel. At this time, the inlet and outlet ends of the control valve 6 are in an open state, and the air inlet end is in a closed state. The water pump 5 pumps the water of the electric heating container 2 to the drain port. At the end of the drainage, the inlet and outlet ends of the control valve 6 are in a port state, and the air inlet end and the drain end are in an open state. The water pump 5 completely discharges the remaining liquid in the delivery pipe 7 to the drain port 8. The remaining liquid in the delivery pipe 7 can be completely discharged during the entire water collection process to reduce bacterial growth. Of course, according to the setting of this device, the emptying action of the delivery pipe 7 can also be controlled separately, and the specific operation setting is not limited. In addition, the ultraviolet disinfection device can also be turned on to further sterilize and disinfect the delivery pipe 7 to improve the drinking safety of this device.

[0030] The above embodiments of the utility model are merely examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the utility model still belong to the protection scope of the utility model.

Claims

1. A liquid heater capable of draining excess liquid in a tube, comprising a base (1) and an electric heating container (2), wherein the base (1) and the electric heating container (2) are detachably coupled via an electric coupler (3) with a water passage (31), wherein a water inlet of the water passage (31) is connected to a liquid storage cavity of the electric heating container (2), and a water outlet of the water passage (31) is connected to a liquid discharge port (8) via a water pump (5); characterized in that: A control valve (6) is further provided in the base (1). The control valve (6) is located on a pipeline between the water outlet of the water passage (31) and the water pump (5). The control valve (6) has a water inlet end (61), a water outlet end (62), and an air inlet end (63) connected to the atmosphere. The water inlet end (61) of the control valve (6) is connected to the water outlet of the water passage (31) via a pipeline. The water outlet end (62) of the control valve (6) is connected to the liquid inlet of the water pump (5) via a pipeline. The liquid outlet of the water pump (5) is connected to the liquid outlet (8) via a delivery pipeline (7). When the water inlet end (61) of the control valve (6) is closed and the drain end (62) is connected to the air inlet end (63), the water pump (5) sucks in external gas and sequentially passes the gas inlet end (63), the drain end (62) and the liquid discharge port (8) to discharge the remaining liquid in the delivery pipe (7).

2. A liquid heater capable of draining excess liquid from a tube according to claim 1, characterized in that: The delivery pipeline (7) is also provided with an ultraviolet disinfection device (9).

3. A liquid heater capable of draining excess liquid from a tube according to claim 2, characterized in that: The ultraviolet disinfection device (9) comprises a disinfection box (91) in which an ultraviolet lamp (93) is arranged. A transparent conduit (94) is arranged in the disinfection box (91). The transparent conduit (94) is connected to the conveying pipe (7). The ultraviolet lamp (93) can irradiate the transparent conduit (94).

4. A liquid heater capable of draining excess liquid from a tube according to claim 3, characterized in that: The disinfection box (91) comprises an upper box body (91a) and a lower box body (91b), the upper and lower box bodies being connected via fasteners, and the lower box body (91b) is provided with a through hole (92) for a transparent conduit (94) to pass through.

5. A liquid heater capable of draining excess liquid from a tube according to claim 3, characterized in that: The transparent conduit (94) is a quartz glass tube.

6. A liquid heater capable of draining excess liquid from a tube according to claim 1, characterized in that: The control valve (6) is a solenoid valve.

7. A liquid heater capable of draining excess liquid from a tube according to claim 1, characterized in that: The air inlet end (63) of the control valve (6) is also connected to an air filter device (10), the air filter device (10) comprising a filter box (11) with air vents, and one or more layers of filter foam (12) are arranged in the filter box (11).

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