Electric kettle with pipeline drainage function

Abstract

The utility model discloses an electric kettle with a pipeline drainage function, which comprises a main body and a kettle which are connected with each other, and a pipeline system arranged in the main body, the pipeline system comprises a water inlet pipeline, a water pump and a water outlet pipeline, the water inlet pipeline is connected with the kettle, the water inlet pipeline is connected with the water pump, and the water outlet pipeline is connected with the water pump. The water outlet pipeline is connected with the kettle; a first three-way electromagnetic valve is connected in a pipeline of the water inlet pipeline, two openings of the first three-way electromagnetic valve are connected into the water inlet pipeline, and the other opening of the first three-way electromagnetic valve is connected with an air inlet pipe; wherein the first three-way electromagnetic valve has a first state, and in the first state, the water inlet pipeline closes communication between the water pump and the kettle through the first three-way electromagnetic valve, and meanwhile, the water pump is communicated with the air inlet pipe through the first three-way electromagnetic valve. The mode that the three-way electromagnetic valve is used for air inlet and pipeline drainage is low in cost and energy consumption, low in operation noise and easy to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of household drinking water appliances, in particular to an electric kettle with a pipeline drainage function. Background Art

[0002] Electric kettles, water dispensers, etc. are common household drinking water appliances in every family. With the development of science and technology, existing household drinking water appliances can not only heat water, but also have functions such as heat preservation and quantitative water supply. In order to prevent the problems of unsanitary drinking water or low water temperature when taking hot water caused by residual water in the internal pipes of household drinking water appliances, some household drinking water appliances also have pipe drainage function.

[0003] For example, a Chinese utility model patent with announcement number CN220967106U discloses a water dispenser with a double-pump drainage system, including a kettle, a drainage system and a water spout, wherein the drainage system includes a main pipeline, a return pipeline, a first water pump and a second water pump, wherein the first water pump is arranged on the main pipeline, and the second water pump is arranged on the return pipeline, wherein the input end of the main pipeline is connected to the inner cavity of the kettle, and the output end is connected to the water spout, and the input end of the return pipeline is connected to the output end of the main pipeline, and the output end is connected to the inner cavity of the kettle. The water dispenser of the utility model supplies water to the water spout through the drainage system, wherein the drainage system is provided with a main pipeline and a return pipeline, and the main pipeline and the return pipeline are both provided with water pumps, thereby forming a double-pump drainage system, wherein water is first supplied to the water spout through the main pipeline during operation, and after the water supply is stopped, the water in the main pipeline is returned to the kettle through the return pipeline, so as to avoid residual water affecting the temperature of the next water output.

[0004] However, the applicant has found through research that the above-mentioned water dispenser with a dual-pump drainage system mainly uses two water pumps to discharge the residual water in the pipe, which has high cost and energy consumption. The two water pumps may generate relatively loud noise during operation, and the water pump structure is relatively complex and has low durability. The use of two water pumps is not easy to maintain. Utility Model Content

[0005] The present application provides an electric kettle with a pipeline drainage function, which can solve the technical problems of the above-mentioned prior art such as high cost and energy consumption, high operating noise, and difficulty in maintenance.

[0006] The present application provides an electric kettle with a pipeline drainage function, comprising:

[0007] Main body;

[0008] a kettle connected to the main body;

[0009] A piping system, the piping system is installed inside the main body, the piping system includes a water inlet pipe, a water pump and a water outlet pipe, the water inlet pipe is connected to the kettle, the water inlet pipe is connected to the water pump, the water outlet pipe is connected to the water pump, and the water outlet pipe is connected to the kettle; a first three-way solenoid valve is connected to the pipe of the water inlet pipe, two openings of the first three-way solenoid valve are connected to the water inlet pipe, and the remaining one opening of the first three-way solenoid valve is connected to the air intake pipe;

[0010] Among them, the first three-way solenoid valve has a first state. In the first state, the water inlet pipeline closes the connection between the water pump and the kettle through the first three-way solenoid valve, and at the same time connects the water pump and the air inlet pipe through the first three-way solenoid valve.

[0011] Preferably, the water outlet pipeline includes: a first water pipe, which is connected to the water pump; a second three-way solenoid valve, which is a three-way solenoid valve having an inlet end and two outlet ends, and the inlet end of the second three-way solenoid valve is connected to the first water pipe; a second water pipe; and a third water pipe; wherein the second water pipe and the third water pipe are respectively connected to the two outlet ends of the second three-way solenoid valve, and the second water pipe is connected to the kettle to transport the water of the pipeline system back to the kettle.

[0012] Preferably, a cooler is installed on the second water pipe, and the cooler has a cooling flow channel for water circulation; the main body has a water outlet, and the third water pipe is connected to the water outlet to transport the water in the kettle to the outside of the main body.

[0013] Preferably, the first three-way solenoid valve has a second state. In the second state, the water inlet pipeline connects the water pump and the kettle through the first three-way solenoid valve, and at the same time closes the connection between the water pump and the air intake pipe through the first three-way solenoid valve; in the second state of the first three-way solenoid valve, the water pump can pump the water in the kettle into the cooler and then transport it back to the kettle; alternatively, in the second state of the first three-way solenoid valve, the water pump can transport the water in the kettle to the outside of the main body through the third water pipe.

[0014] Preferably, the bottom of the kettle has an upper coupler and a heating element electrically connected to the upper coupler; the main body has a lower coupler, the lower coupler can be electrically connected to the upper coupler, and the lower coupler can be connected to a power socket via a power cord; wherein the water inlet pipe runs through the lower coupler, and when the kettle is placed on the main body, the water inlet pipe is connected to the kettle.

[0015] Preferably, a control circuit board is provided inside the main body; wherein the control circuit board is electrically connected to the first three-way solenoid valve, the second three-way solenoid valve and the water pump respectively, and the control circuit board is used to control the operation of the first three-way solenoid valve, the second three-way solenoid valve and the water pump.

[0016] Preferably, a water flow sensor is also installed on the pipeline system, and the water flow sensor is electrically connected to the control circuit board so that the electric kettle can supply water to the user in a quantitative manner.

[0017] Preferably, a temperature sensor is installed in the kettle, and the temperature sensor is electrically connected to the control circuit board to monitor the temperature of the water in the kettle.

[0018] Preferably, the main body has a control panel on its exterior, and the control panel is electrically connected to the control circuit board.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] The present application provides an electric kettle with a pipeline drainage function. By connecting one opening of a three-way solenoid valve to an air inlet pipe, air is introduced into the pipeline system under the action of a water pump, and the air is used to squeeze out the residual water in the pipeline system and drain it back to the kettle. This method of using the three-way solenoid valve to intake air for pipeline drainage has low cost and energy consumption, low operating noise, and is easy to maintain.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 It is a schematic diagram of the water flow direction when the pipe system of this application is drained;

[0024] Figure 2 It is a schematic diagram of the main body of this application;

[0025] Figure 3 It is a schematic diagram of a kettle of this application;

[0026] Figure 4 It is a schematic diagram of the internal structure of the electric kettle of the present application;

[0027] In the figure:

[0028] 11-water inlet pipe, 12-air inlet pipe;

[0029] 21-first three-way solenoid valve, 22-second three-way solenoid valve;

[0030] 30-water pump;

[0031] 41-first water pipe, 42-second water pipe, 43-third water pipe;

[0032] 50-main body, 51-air outlet, 52-lower coupler, 53-water outlet, 54-heat dissipation outlet;

[0033] 60-kettle, 61-kettle lid;

[0034] 70-Cooler. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0036] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this specification should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in this specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate the existence of one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0037] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the", etc. used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0038] Next, the embodiments of this specification are described in detail.

[0039] Please refer to Figure 1 to Figure 4 As shown, Figure 1 This is a schematic diagram of the water flow direction when the pipe system of this application is drained. Figure 2 This is a schematic diagram of the main body of this application. Figure 3 This is a schematic diagram of a kettle in this application. Figure 4 It is a schematic diagram of the internal structure of the electric kettle of the present application.

[0040] As shown in the figure, in order to solve the technical problems of the kettle drainage system in the prior art, such as high cost and energy consumption, high operating noise, and difficulty in maintenance, the present application provides an electric kettle with a pipeline drainage function, which includes a main body 50, a kettle 60 and a pipeline system.

[0041] Specifically, the kettle 60 is connected to the main body 50, and the piping system is installed inside the main body 50. The piping system includes a water inlet pipe 11, a water pump 30 and a water outlet pipe. The water inlet pipe 11 is connected to the kettle 60, the water inlet pipe 11 is connected to the water pump 30, the water outlet pipe is connected to the water pump 30, and the water outlet pipe is connected to the kettle 60. A first three-way solenoid valve 21 is connected to the pipe of the water inlet pipe 11, and two openings of the first three-way solenoid valve 21 are connected to the water inlet pipe 11, and the remaining one opening of the first three-way solenoid valve 21 is connected to the air intake pipe 12.

[0042] It should be noted that the three-way solenoid valve is mainly used to control the on / off or flow direction of the fluid. In the electric kettle, the three-way solenoid valve is connected to a control circuit board or other components that can receive input signals, process data, perform logic control, and drive the electric kettle to work, thereby realizing automatic control of the flow direction or flow rate of the fluid.

[0043] Specifically, the first three-way solenoid valve 21 has a first state. In the first state, the water inlet pipeline 11 closes the connection between the water pump 30 and the kettle 60 through the first three-way solenoid valve 21, and at the same time, the water pump 30 and the air inlet pipe 12 are connected through the first three-way solenoid valve 21. Under the action of the water pump 30, air enters the pipeline system from the air inlet pipe 12, squeezes out the residual water in the pipeline system, and realizes the drainage of the pipeline. On the one hand, the cost of the three-way solenoid valve is lower than that of the water pump; on the other hand, the three-way solenoid valve only needs to be opened and closed to control the flow of gas or liquid, so the energy consumption of the three-way solenoid valve is lower when draining the pipeline; in other aspects, the three-way solenoid valve is a simple mechanical device without moving parts, so it is easier to maintain and has less noise during operation. Therefore, the use of a three-way solenoid valve in conjunction with a water pump to drain the pipeline has lower costs and energy consumption, less operating noise, and is easy to maintain.

[0044] In one embodiment, the water outlet pipeline includes a first water pipe 41, a second three-way solenoid valve 22, a second water pipe 42 and a third water pipe 43. The first water pipe 41 is connected to the water pump 30, the second three-way solenoid valve 22 is a three-way solenoid valve having an inlet end and two outlet ends, and the inlet end of the second three-way solenoid valve 22 is connected to the first water pipe 41. The second water pipe 42 and the third water pipe 43 are respectively connected to the two outlet ends of the second three-way solenoid valve 22, and the second water pipe 42 is connected to the kettle 60 to transport the water of the pipeline system back to the kettle 60.

[0045] Specifically, when the first three-way solenoid valve 21 is in the first state, the water inlet pipeline 11 closes the connection between the water pump 30 and the kettle 60 through the first three-way solenoid valve 21, and at the same time, the water pump 30 and the air inlet pipe 12 are connected through the first three-way solenoid valve 21, the inlet end of the second three-way solenoid valve 22 connected to the first water pipe 41 is opened, the outlet end of the second three-way solenoid valve 22 connected to the second water pipe 42 is opened, and at the same time, the outlet end of the second three-way solenoid valve 22 connected to the third water pipe 43 is closed. Therefore, under the action of the water pump 30, air enters the pipeline system from the air inlet pipe 12, and the residual water in the pipeline system is squeezed back into the kettle 60 through the second water pipe 42 of the water outlet pipeline, thereby achieving drainage of the pipeline.

[0046] In one embodiment, a cooler 70 is installed on the second water pipe 42 , and the cooler 70 has a cooling channel for water circulation. The main body 50 has a water outlet 53 , and the third water pipe 43 is connected to the water outlet 53 to transport the water in the kettle 60 to the outside of the main body 50 .

[0047] The cooler 70 can be made of any material suitable for cooling water. Preferably, the cooler 70 is made of stainless steel. Since stainless steel is very effective in regulating temperature, the cooler 70 made of stainless steel has a better cooling effect on water. In addition, stainless steel does not pollute water and is resistant to low acid and alkali. Even if it is used as a container for long-term water storage, it will not cause secondary pollution, thus ensuring the cleanliness of the water quality. At the same time, the cooler 70 made of stainless steel has a long service life.

[0048] More preferably, the cooler 70 includes a cooler body and a cooling fan. An air inlet and an air outlet 51 are provided on the outer wall of the main body 50. The cooling fan can draw cold air from the outside of the main body 50 into the interior for heat dissipation of the cooler 70, and dissipate the heat out of the main body 50 through the air outlet 51.

[0049] In one embodiment, the first three-way solenoid valve 21 has a second state. In the second state, the water inlet pipe 11 connects the water pump 30 and the kettle 60 through the first three-way solenoid valve 21, and at the same time closes the connection between the water pump 30 and the air intake pipe 12 through the first three-way solenoid valve 21.

[0050] In this embodiment, in the second state of the first three-way solenoid valve 21, the water pump 30 can pump the water in the kettle 60 into the cooler 70 and then transport it back to the kettle 60. It is possible to circulate water into the cooler 70 for cooling, thereby improving the cooling efficiency of the water and achieving a better cooling effect. Alternatively, in the second state of the first three-way solenoid valve 21, the water pump 30 can transport the water in the kettle 60 to the outside of the main body 50 through the third water pipe 43 for the user to take water for drinking.

[0051] Specifically, on the one hand, in the second state of the first three-way solenoid valve 21, if the electric kettle enters the state of cooling water, the inlet end of the second three-way solenoid valve 22 connected to the first water pipe 41 is opened, and the outlet end of the second three-way solenoid valve 22 connected to the second water pipe 42 is opened, and the outlet end connected to the third water pipe 43 is closed, so that the water in the kettle 60 is transported to the cooler 70 for cooling, and the cooled water is transported back to the kettle 60 through the second water pipe 42. On the other hand, in the second state of the first three-way solenoid valve 21, if the electric kettle enters the state of discharging water, the inlet end of the second three-way solenoid valve 22 connected to the first water pipe 41 is opened, and the outlet end of the second three-way solenoid valve 22 connected to the third water pipe 43 is opened, and the outlet end connected to the second water pipe 42 is closed, so that the water in the kettle 60 is transported out of the main body 50 for the user to take.

[0052] In one embodiment, the bottom of the kettle 60 has an upper coupler and a heating element electrically connected to the upper coupler. The main body 50 has a lower coupler 52, which can be electrically connected to the upper coupler, and the lower coupler 52 can be connected to a power socket through a power cord. The lower coupler 52 is connected to the power supply, and when the upper coupler is connected to the lower coupler 52, the heating element can heat the water in the kettle 60. Preferably, the water inlet pipe 11 runs through the lower coupler 52, and when the kettle 60 is placed on the main body 50, the water inlet pipe 11 is connected to the kettle 60, so that the water in the kettle 60 is pumped into the cooler 70 for cooling, or the water in the kettle 60 is extracted for the user to take.

[0053] It can be understood that the lower coupler 52 is electrically connected to other components of the electric kettle that need to be powered on to work. The lower coupler 52 is connected to the power socket through a power cord to supply power to other components inside the electric kettle that need to be powered on to work.

[0054] Preferably, the main body 50 has a heat dissipation opening 54 at the bottom.

[0055] In one embodiment, the main body 50 has a control circuit board inside. It should be noted that the control circuit board is a circuit board used to implement a specific control function in the electric kettle, and can be a control circuit board such as a microcontroller control board that can receive input signals, process data, perform logic control, and drive the electric kettle to work. Specifically, the control circuit board is electrically connected to the first three-way solenoid valve 21, the second three-way solenoid valve 22 and the water pump 30, respectively, and the control circuit board is used to control the first three-way solenoid valve 21, the second three-way solenoid valve 22 and the water pump 30 to work. Specifically, the control circuit board is also connected to the heating element to control the heating element to work.

[0056] In one embodiment, a water flow sensor is also installed on the pipeline system, and the water flow sensor is electrically connected to the control circuit board so that the electric kettle can supply water to the user in a quantitative manner.

[0057] It should be noted that the water flow sensor can detect the volume or mass of water flowing through the sensor, and the control circuit board is responsible for receiving input signals, processing data, and controlling the operation and output of the device. In the present application, the volume or mass of water flowing through the sensor detected by the water flow sensor is transmitted to the control circuit board in the form of a signal. The control circuit board can receive the signal and monitor the water output of the kettle 60. When the water output reaches the preset water output target, the control circuit board controls the water pump 30 to stop pumping water. At the same time, it can also control the closure of the outlet and inlet ends of the three-way solenoid valve to achieve quantitative water output to the user.

[0058] Specifically, in the present application, the water flow sensor is connected to the control circuit board. After the user sets the water output of the electric kettle, the control circuit board controls the first three-way solenoid valve 21 to enter the second state. The water pump 30 pumps the water in the kettle 60 into the water outlet pipe and outputs it through the third water pipe 43 for the user to drink. The water flow sensor detects the amount of water flowing through the water outlet pipe. When the water volume reaches the water output volume set by the user, the water flow sensor transmits a signal to the control circuit board, and the circuit control board controls the electric kettle to stop discharging water, thereby realizing the function of quantitative and accurate water output of the electric kettle.

[0059] Preferably, the water flow sensor of the present application can also be used to detect whether there is water in the kettle 60. If there is no water, the sensor will send a signal to the control circuit to avoid heating the kettle 60 in a water-free state, prevent dry burning and damage, and cause dangerous accidents.

[0060] Preferably, the water flow sensor of the present application can also indirectly determine the water level in the kettle 60 by detecting the water flow rate flowing through the water outlet pipe. When the water in the kettle 60 reaches the set water level, the water flow sensor will send a signal to the control circuit to automatically cut off the power to the kettle 60 and stop heating. This ensures that the water will not overflow or boil due to overheating, thereby preventing dangerous accidents.

[0061] In one embodiment, a temperature sensor is installed in the kettle 60 , and the temperature sensor is electrically connected to the control circuit board to monitor the temperature of the water in the kettle 60 .

[0062] Specifically, the user sets the required water outlet temperature in advance. When the water in the electric kettle is boiled, the water temperature regulating device in the electric kettle starts to work to cool the water. When the temperature sensor detects that the water temperature in the kettle 60 reaches the water outlet temperature set by the user, the temperature sensor transmits a signal to the control circuit board, and the control circuit board controls the water temperature regulating device to stop working, so that the electric kettle can accurately cool the water, so that the user can set the water outlet temperature of the electric kettle according to his own needs.

[0063] Specifically, the temperature sensor can also detect the water temperature in the kettle 60. When the water temperature reaches the set heating temperature, the sensor will send a signal to the control circuit board to stop the heating element from heating. By monitoring the water temperature, the temperature sensor can prevent the water in the kettle 60 from boiling over or causing dry boiling due to overheating, thereby protecting the safety of the device and the user.

[0064] Preferably, the temperature sensor can also detect the water temperature and maintain it at a set constant temperature, ensuring that the water maintains a constant temperature for a required period of time.

[0065] In one embodiment, the main body 50 has a control panel on the outside, and the control panel is electrically connected to the control circuit board. It should be noted that the control panel provides an interface for the user to interact with the electric kettle, and has the function of displaying information and controlling the electric kettle. The user's input is transmitted to the control circuit board through the control panel to execute the corresponding control logic. Specifically, the user can control the electric kettle to heat or stop heating water through the control panel, and can also control the water output and water output temperature of the electric kettle through the control panel. Accordingly, the control panel can display relevant information about the electric kettle, such as water output, water temperature in the kettle 60, etc.

[0066] In a preferred embodiment, the kettle 60 has a kettle cover 61, which includes a first cover body and a second cover body, wherein the second cover body is placed in the first cover body and is movably connected to the first cover body. The second cover body has a pressing mechanism and a lifting mechanism, wherein the lifting mechanism is connected to the pressing mechanism, and the pressing mechanism is configured to allow a user to control the opening and closing of the second cover body by pressing; the lifting mechanism can respond to the action of the pressing mechanism to move the second cover body between the open and closed positions; when the second cover body is in an open state, an opening is formed between the first cover body and the second cover body, so that the water vapor in the kettle 60 can be dissipated through the opening, and when the water in the kettle 60 needs to be cooled down, this can further increase the cooling speed of the water in the kettle 60.

[0067] In a specific embodiment, when the user finishes taking water, the control circuit board controls the electric kettle to automatically enter the pipeline drainage state, that is, the first three-way solenoid valve 21 enters the first state, the water inlet pipeline 11 closes the connection between the water pump 30 and the water extraction port at the bottom of the kettle 60 through the first three-way solenoid valve 21, and at the same time, the water pump 30 and the air inlet pipe 12 are connected through the first three-way solenoid valve 21, the inlet end of the second three-way solenoid valve 22 connected to the first water pipe 41 is opened, the outlet end of the second three-way solenoid valve 22 connected to the second water pipe 42 is opened, and at the same time, the outlet end of the second three-way solenoid valve 22 connected to the third water pipe 43 is closed. Under the action of the water pump 30, air is drawn into the pipeline system through the air inlet pipe 12, and under the pressure of the air, the residual water in the pipeline is squeezed out of the pipeline through the second water pipe 42 of the water outlet pipeline and transported back to the kettle 60, ensuring the safety and hygiene of the pipeline system, and ensuring that there is no water accumulation in the pipeline system that affects the temperature of the water taken by the user next time. Since the three-way solenoid valve has the advantages of low cost, low energy consumption during operation, simpler maintenance, and low noise during operation, the method of using a three-way solenoid valve in conjunction with a water pump to drain the pipeline system has lower cost, lower energy consumption, lower operating noise, and is easy to maintain.

[0068] Therefore, the electric kettle with pipeline drainage function of the present application connects one opening of the three-way solenoid valve to the air inlet pipe 12, introduces air into the pipeline system under the action of the water pump 30, and uses the air to squeeze out the residual water in the pipeline system and discharge it back to the kettle 60. This method of using the three-way solenoid valve to intake air for pipeline drainage has low cost and energy consumption, low operating noise, and is easy to maintain.

[0069] Those skilled in the art will readily appreciate other embodiments of the specification after considering the specification and practicing the invention claimed herein. The specification is intended to cover any variations, uses or adaptations of the specification that follow the general principles of the specification and include common knowledge or customary techniques in the art that are not claimed in the specification. The specification and examples are to be considered exemplary only, and the true scope and spirit of the specification are indicated by the following claims.

[0070] It should be understood that the present description is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

[0071] The above are only preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. An electric kettle with pipeline drainage function, characterized in that: include: Main body; a kettle connected to the main body; A piping system, the piping system is installed inside the main body, the piping system includes a water inlet pipe, a water pump and a water outlet pipe, the water inlet pipe is connected to the kettle, the water inlet pipe is connected to the water pump, the water outlet pipe is connected to the water pump, and the water outlet pipe is connected to the kettle; a first three-way solenoid valve is connected to the pipe of the water inlet pipe, two openings of the first three-way solenoid valve are connected to the water inlet pipe, and the remaining one opening of the first three-way solenoid valve is connected to the air intake pipe; Among them, the first three-way solenoid valve has a first state. In the first state, the water inlet pipeline closes the connection between the water pump and the kettle through the first three-way solenoid valve, and at the same time connects the water pump and the air inlet pipe through the first three-way solenoid valve.

2. The electric kettle with pipeline drainage function according to claim 1, characterized in that: The water outlet pipeline comprises: a first water pipe connected to the water pump; a second three-way solenoid valve, wherein the second three-way solenoid valve is a three-way solenoid valve having an inlet end and two outlet ends, and the inlet end of the second three-way solenoid valve is connected to the first water pipe; Second water pipe; The third water pipe; The second water pipe and the third water pipe are respectively connected to the two outlet ends of the second three-way solenoid valve, and the second water pipe is connected to the kettle to transport the water of the pipeline system back to the kettle.

3. The electric kettle with pipeline drainage function according to claim 2, characterized in that: A cooler is installed on the second water pipe, and the cooler has a cooling channel for water circulation; the main body has a water outlet, and the third water pipe is connected to the water outlet to transport the water in the kettle to the outside of the main body.

4. The electric kettle with pipeline drainage function according to claim 3, characterized in that: The first three-way solenoid valve has a second state, in which the water inlet pipeline is connected to the water pump and the kettle through the first three-way solenoid valve, and the connection between the water pump and the air inlet pipe is closed through the first three-way solenoid valve; In the second state of the first three-way solenoid valve, the water pump can pump the water in the kettle into the cooler and then transport it back to the kettle; Alternatively, in the second state of the first three-way solenoid valve, the water pump can transport the water in the kettle to the outside of the main body through the third water pipe.

5. The electric kettle with pipeline drainage function according to claim 1, characterized in that: The bottom of the kettle has an upper coupler and a heating element electrically connected to the upper coupler; the main body has a lower coupler, the lower coupler can be electrically connected to the upper coupler, and the lower coupler can be connected to a power socket through a power cord; Wherein, the water inlet pipeline runs through the lower coupler, and when the kettle is placed on the main body, the water inlet pipeline is connected to the kettle.

6. The electric kettle with pipeline drainage function according to claim 1, characterized in that: The main body has a control circuit board inside; The control circuit board is electrically connected to the first three-way solenoid valve, the second three-way solenoid valve and the water pump respectively, and is used to control the operation of the first three-way solenoid valve, the second three-way solenoid valve and the water pump.

7. The electric kettle with pipeline drainage function according to claim 6, characterized in that: A water flow sensor is also installed on the pipeline system, and the water flow sensor is electrically connected to the control circuit board so that the electric kettle can supply water to the user in a quantitative manner.

8. The electric kettle with pipeline drainage function according to claim 6, characterized in that: A temperature sensor is installed in the kettle, and the temperature sensor is electrically connected to the control circuit board to monitor the temperature of the water in the kettle.

9. The electric kettle with pipeline drainage function according to claim 6, characterized in that: The main body is provided with a control panel on the outside, and the control panel is electrically connected to the control circuit board.

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