Electromagnetic kettle

Abstract

The invention discloses an electromagnetic water-boiling kettle, comprising a base, a kettle body that can be placed on the base for matching use, an electromagnetic heater installed on the base, a main circuit board that is arranged in the base and can be electrically connected to an external power supply, and also comprising a water inlet valve arranged at the bottom of the kettle body, a water injection joint that can be lifted and moved on the base and sealably docked with the water inlet valve, a lifting device for driving the water injection joint to lift and move, and a lifting switch for controlling the lifting device; the lifting device is connected to the water injection joint and is electrically connected to the main circuit board through the lifting switch. The electromagnetic water-boiling kettle adopts a bottom water inlet method, and can still maintain good sealing performance after long-term use.

Description

Technical Field

[0001] The invention belongs to the technical field of electric kettles, and in particular relates to an electromagnetic boiling kettle. Background Art

[0002] At present, most kettles for boiling water directly use a heating plate at the bottom of the kettle to heat the water in the kettle, and some use electromagnetic heaters for heating. The current kettles are all filled with water from the top opening. Filling water from the top of the kettle is a conventional design. When filling water, it is necessary to open the top cover of the kettle, and swing the water injection faucet to the top of the kettle top opening, and then start the automatic water injection. In addition, there are kettles that use the thrust of the faucet swing to push the lid open, and then fill water. The faucet can also be driven by a motor to swing automatically. These structures all require a faucet column and a horizontally cantilevered guide arm to be set at a certain distance on the side of the kettle. The faucet column and the guide arm need to occupy a certain space, so that the kettle cannot be further reduced in size. The faucet column and its guide arm also have space obstacles for the kettle body to be taken and used. That is, when picking up the kettle to pour water, the column has obstacles to the movement of the kettle in the horizontal space, and the guide arm has obstacles to the movement of the kettle in the longitudinal space, that is, it is inconvenient to use.

[0003] For ease of use, you can consider adding water at the bottom of the electric kettle. The most important issue to consider when adding water at the bottom is the water sealing problem at the water filling connection position. Usually, when a pair of water pipe joints are sealed and connected, a threaded connection is required, and the interface is a rigid material clamping sealing gasket, or the two sealing joints are pulled together by a structural member and then the tension is increased to squeeze each other to form a seal. Such a sealing structure cannot be used in the field of electric kettles that need to lift the kettle frequently to pour water.

[0004] In order to make it easier to insert the water inlet valve and better achieve sealing docking, the water injection joint for adding water at the bottom is usually fixedly installed on the base. After being used for a certain number of times, the sealing joint that docks with the water injection joint is prone to wear or plastic deformation due to frequent touching and squeezing, which can easily lead to poor sealing. Some water injection joints for adding water at the bottom are floatingly installed on the base, and the water injection joint is lifted by a spring and protrudes from the base. When used for a certain number of times, the spring is permanently deformed due to repeated compression, causing the water injection joint to drop in position and unable to fully contact with the docking joint, which can also easily lead to poor sealing performance. Summary of the invention

[0005] The invention provides an electromagnetic water boiling kettle which adopts a bottom water inlet mode and can still maintain good sealing performance after long-term use.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An electromagnetic kettle comprises a base, a kettle body which can be placed on the base for matching use, an electromagnetic heater installed on the base, and a main circuit board arranged in the base and electrically connected to an external power supply;

[0008] It also includes a water inlet valve disposed at the bottom of the kettle body, a water injection joint disposed on the base and capable of being lifted and lowered and sealed with the water inlet valve, a lifting device for driving the water injection joint to lift and lower, and a lifting switch for controlling the lifting device;

[0009] The lifting device is connected to the water injection joint and is electrically connected to the main circuit board through the lifting switch.

[0010] Furthermore, the base is provided with a trough, and a through-hole is provided at the bottom of the trough. The water injection joint can be axially slidably passed through the through-hole and installed at the trough, and in a non-water injection state, the water injection joint can be lowered to its uppermost end without exceeding the uppermost end of the trough.

[0011] Furthermore, the water injection joint includes a water injection part and a push part provided at the lower end of the water injection part;

[0012] The water injection part is provided with a water inlet and a water outlet, and the water inlet is connected to an external water source through a water pipe;

[0013] The lifting device drives the water injection joint to rise or fall through the pushing part.

[0014] Furthermore, the lifting device is a telescopic motor, and the telescopic motor is provided with a telescopic rod, and the telescopic rod is in contact with the pushing portion.

[0015] Furthermore, the lifting device is an eccentric motor, and when the eccentric motor rotates, it pushes the pushing part to move up and down.

[0016] Furthermore, the lifting device is a gear motor, the gear motor is provided with a gear, the pushing part includes a rack meshing with the gear, and the rack is fixed to the lower end of the water injection part along the axial direction of the water injection part.

[0017] Furthermore, a magnetic plate is fixed to the bottom of the kettle body, and an electromagnetic block is fixed to the base which can generate attraction for the magnetic plate when powered, and the electromagnetic block is ring-shaped and arranged around the water injection joint.

[0018] Furthermore, the electromagnetic block protrudes from the panel of the base, and the magnetic attraction is provided with a groove matching the shape of the protruding portion of the electromagnetic block.

[0019] Furthermore, a multi-stage one-way valve composed of at least two one-way valves connected in series is provided at the bottom of the kettle body as a water inlet valve.

[0020] Furthermore, it also includes a water pump arranged in the base and a water volume control device for controlling the water volume added by the water pump. The water outlet of the water pump is connected to the water injection joint through a water pipe, and the water inlet of the water pump can be connected to an external water source through the water pipe; the water volume control device is electrically connected to the water pump.

[0021] Furthermore, the water volume control device includes a sub-circuit board and a sensor controller for controlling the water volume added by the water pump, and the sensor controller is electrically connected to the sub-circuit board.

[0022] Furthermore, the main circuit board is provided with a transmitter, and the auxiliary circuit board is provided with a receiver for transmitting radio signals with the transmitter.

[0023] Furthermore, the sensing controller is a weight sensing controller arranged on the base, and the water addition amount of the water pump is controlled by the weight sensing controller to prevent dry burning.

[0024] Furthermore, it also includes a kettle bottom temperature sensor located at the bottom of the kettle body or the base, and the kettle bottom temperature sensor is electrically connected to the auxiliary circuit board.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the electromagnetic kettle, a water inlet valve is arranged at the bottom of the kettle body, and a water injection joint is arranged at the base to cooperate with the water inlet valve, which can push the water inlet valve open by water pressure to add water to the bottom of the kettle. When water needs to be added, the lifting switch is started, and the lifting device is used to drive the water injection joint to rise to cooperate with the water inlet valve, so that the water injection joint and the water inlet valve can be firmly matched together, and the applied force is directly and centrally applied to the water injection joint and the water inlet valve, so that the sealing connection is more firm and reliable, and the sealing performance, fatigue resistance and the effect of offsetting dimensional errors are greatly improved; when the water is added, the lifting switch or automatic induction can be used to return the lifting device to the initial position, so that the water injection joint falls back to the initial position.

[0027] The lifting device is used to drive the water injection joint to rise and connect with the water injection valve, and the supporting force provided for the water injection joint can make the connection between the water injection joint and the water inlet valve tighter, thereby having better sealing; and when not injecting water or not in use, the water injection joint can be lowered to a lower position, so that it can be hidden under the panel of the base, which is convenient for use and cleaning, and has a simpler and more elegant appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0029] Figure 1is a schematic diagram of the overall structure of the electromagnetic kettle according to Embodiment 1 of the present invention;

[0030] Figure 2 is a schematic diagram of the overall structure of the electromagnetic kettle according to Embodiment 3 of the present invention;

[0031] Figure 3 It is a schematic diagram of the overall structure of the electromagnetic kettle described in Example 2 of the present invention. Description of the drawings:

[0033] 1. Base; 11. Main circuit board; 12. Electromagnetic heater; 13. Auxiliary circuit board; 14. Transmitter; 15. Receiver; 16. Power socket; 17. Panel; 18. Induction controller; 19. Water pump; 2. Kettle body; 3. Water inlet valve; 31. Main valve seat; 32. External valve; 33. Internal valve seat; 34. Internal valve; 4. Water injection joint; 41. Water injection part; 42. Push part; 43. Shoulder ring; 44. Limiting meson; 5. Lifting device; 61. Electromagnetic block; 62. Magnetic plate; DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] The invention discloses an electromagnetic kettle. Figure 1 to Figure 3 As shown, it includes a base 1, a kettle body 2 that can be placed on the base 1 for matching use, an electromagnetic heater 12 installed on the base 1, and a main circuit board 11 that is arranged in the base 1 and can be electrically connected to an external power source; specifically, the main circuit board 11 is electrically connected to the external power source through a power socket 16. It also includes a water inlet valve 3 arranged at the bottom of the kettle body 2, a water injection joint 4 that can be moved up and down and is sealed and docked with the water inlet valve 3 on the base 1, a lifting device 5 for driving the water injection joint 4 to move up and down, and a lifting switch for controlling the lifting device 5;

[0036] The lifting device 5 is connected to the water injection joint 4 and is electrically connected to the main circuit board 11 through a lifting switch.

[0037] In the electromagnetic water boiling kettle, a water inlet valve 3 is arranged at the bottom of the kettle body 2, and a water injection joint 4 is arranged on the base 1 to cooperate with the water inlet valve 3, which can push the water inlet valve 3 open by water pressure to add water to the bottom of the kettle. When water needs to be added, the lifting switch is started, and the lifting device 5 is used to drive the water injection joint 4 to rise to cooperate with the water inlet valve 3, so that the water injection joint 4 and the water inlet valve 3 can be firmly matched together, and the applied force is directly and centrally applied to the water injection joint 4 and the water inlet valve 3, so that the sealing connection is more firm and reliable, and the sealing performance, fatigue resistance and the effect of offsetting dimensional errors are all greatly improved; when the water is added, the lifting switch or automatic induction method can be used to return the lifting device 5 to the initial position, so that the water injection joint 4 falls back to the initial position.

[0038] The lifting device 5 is used to drive the water injection joint 4 to rise and connect with the water injection valve, and the lifting force provided to the water injection joint 4 can make the connection between the water injection joint 4 and the water inlet valve 3 tighter, so as to have better sealing performance; and when not injecting water or not in use, the water injection joint 4 can be lowered to a lower position, so that it is convenient to hide it under the panel 17 of the base 1, which is convenient for use and cleaning, and has a simpler and more generous appearance. In a specific embodiment, the lifting switch is preferably set on the panel 17 of the base 1.

[0039] In the above embodiment, if Figure 1 to Figure 3 As shown, the base 1 is provided with a sink, and the bottom of the sink is provided with a perforation. The water injection joint 4 can be axially slidably passed through the perforation and installed at the sink, and in the non-water injection state, the water injection joint 4 can be lowered to its uppermost end without exceeding the uppermost end of the sink. In the non-use state or non-water injection state, the uppermost end of the water injection joint 4 can be hidden in the sink, and when water injection is required, the water injection joint 4 is lifted to be connected with the water inlet valve 3 to avoid damage due to the water injection joint 4 being exposed from the base 1.

[0040] In the above embodiment, if Figure 1 to Figure 3 As shown, the water injection joint 4 includes a water injection portion 41 and a push portion 42 provided at the lower end of the water injection portion 41;

[0041] The water injection part 41 is provided with a water inlet and a water outlet, and the water inlet is connected to an external water source through a water pipe;

[0042] The lifting device 5 drives the water injection joint 4 to rise or fall through the pushing portion 42 .

[0043] Among them, a shoulder ring 43 is provided at one end of the water injection joint 4 close to the water injection part 41 to prevent the water injection joint 4 from leaking out of the perforation, and a limiter 44 is provided at the lower part of the water injection joint 4 to prevent the water injection joint 4 from passing through the perforation when rising, and the limiter 44 can limit the rising height of the water injection joint 4. For easy installation, the water injection joint 4 and the shoulder ring 43 can be made detachable, and the two are connected together by threads.

[0044] In a specific embodiment 1, Figure 1 As shown, the lifting device 5 is a telescopic motor, and the telescopic motor is provided with a telescopic rod, and the telescopic rod abuts against the jacking part 42. Specifically, the telescopic rod can be extended or shortened along the axial direction of the water injection joint 4. When water injection is required, the telescopic rod is extended and pushes the water injection joint 4 to rise and connect with the water inlet valve 3; after the water injection is completed, the lifting switch is used to control the telescopic rod to retract, and the water injection joint 4 falls back to the initial position by its own weight. The telescopic motor can determine the straight push distance of the output shaft of the linear motor according to the feedback jacking reaction force, thereby offsetting the dimensional error of the sealing connection.

[0045] In a specific embodiment 2, Figure 3 As shown, the lifting device 5 is an eccentric motor, and when the eccentric motor rotates, it pushes the push part 42 to move up and down. Specifically, when the eccentric wheel of the eccentric motor rotates a certain angle, it can push the water injection joint 4 to move up. When the eccentric wheel continues to rotate beyond a certain angle, the water injection joint 4 will fall with its rotation. Therefore, the rise or fall of the water injection joint 4 can be controlled by controlling the rotation angle of the eccentric wheel.

[0046] In a specific embodiment 3, Figure 2 As shown, the lifting device 5 is a gear motor, the gear motor is provided with a gear, the push portion 42 includes a rack meshing with the gear, and the rack is fixed to the lower end of the water injection portion 41 along the axial direction of the water injection portion 41. Through the meshing of the gear and the rack, the water injection joint 4 can be well driven to rise or fall.

[0047] In Examples 1 to 3, Figure 1 to Figure 3 As shown, a magnetic plate 62 is fixed to the bottom of the kettle body 2, and an electromagnetic block 61 is fixed to the base 1, which can be energized to generate attraction for the magnetic plate 62. The electromagnetic block 61 is annular and arranged around the water injection joint 4.

[0048] The electromagnetic block 61 protrudes from the panel 17 of the base 1 , and a groove matching the shape of the protruding portion of the electromagnetic block 61 is provided on the magnetic attraction.

[0049] Specifically, an electromagnetic block 61 and a magnetic plate 62 are arranged between the bottom of the kettle and the base 1. The magnetic plate 62 can be made of magnetic stainless steel. A strong adsorption force can be generated between the electromagnetic block 61 and the magnetic plate 62 to prevent the water pressure generated by the water injection joint 4 during water injection and the recoil force formed by the water injection joint 4 from pushing the base 1 and the kettle body 2 apart, thereby smoothly injecting water into the kettle body 2 from the bottom. In the electromagnetic kettle, there is no need to set an electrically conductive joint between the base 1 and the kettle body 2 to avoid leakage, which is more conducive to the realization of water inflow from the bottom of the kettle. Among them, the electromagnetic block 61 is annular and arranged around the water injection joint 4. It can be a continuous ring body or a plurality of blocks arranged intermittently, which jointly generate magnetic attraction to attract the kettle body 2. Surrounding the water injection joint 4 can make the adsorption force more concentrated, better overcome the top thrust formed by the water pressure generated by the water injection joint 4, so that it can open the water inlet valve 3 and ensure that the kettle body 2 and the base 1 are not separated.

[0050] In Examples 1 to 3, Figure 1 to Figure 3 As shown, a multi-stage one-way valve composed of at least two one-way valves connected in series is provided at the bottom of the kettle body 2 as a water inlet valve 3.

[0051] In a specific embodiment, two one-way valves are preferably arranged in series at the bottom of the kettle body 2 to form a two-stage one-way valve as the water inlet valve 3. The double one-way valve can more effectively prevent the water inlet valve 3 from leaking in the opposite direction. After the first-stage one-way valve is pushed open, the water pressure of the water injection joint 4 is directly transmitted to the second-stage one-way valve. The resistance required to push open the one-way valve is not large, which facilitates the one-way valve to be pushed open, so that the water inlet valve 3 is easy to operate and tightly sealed.

[0052] The secondary one-way valve includes a main valve seat 31, an outer valve 32 installed on the main valve seat 31, an inner valve seat 33 plugged in the bottom inner cavity reserved in the main valve seat 31, and an inner valve 34 installed on the inner valve seat 33. The inner valve 34 is located in the cavity surrounded by the main valve seat 31 and the inner valve seat 33. The outer valve 32 is located at the uppermost position of the main valve seat 31 and is relatively easy to remove for replacement. The inner valve seat 33 can also be taken out from the opposite direction, i.e., from the bottom, to facilitate replacement of the inner valve 34 attached thereto, and then installed back into the inner cavity of the main valve seat 31, so that the two consumable parts can be easily replaced to ensure that the kettle does not leak during long-term use.

[0053] In Examples 1 to 3, Figure 1 to Figure 3 As shown, it also includes a water pump 19 arranged in the base 1 and a water volume control device for controlling the water volume added by the water pump 19. The water outlet of the water pump 19 is connected to the water injection joint 4 through a water pipe, and the water inlet of the water pump 19 can be connected to an external water source through the water pipe; the water volume control device is electrically connected to the water pump 19.

[0054] The water volume control device includes a sub-circuit board 13 and a sensor controller 18 electrically connected to the sub-circuit board 13 ; the main circuit board 11 is provided with a transmitter 14 , and the sub-circuit board 13 is provided with a receiver 15 for transmitting radio signals with the transmitter 14 .

[0055] The sensing controller 18 is a weight sensing controller 18 disposed on the base 1 , and the weight sensing controller 18 controls the water addition amount of the water pump 19 and prevents dry burning.

[0056] The kettle bottom temperature sensor is also included, which is located at the bottom of the kettle body 2 or the base 1 . The kettle bottom temperature sensor is electrically connected to the auxiliary circuit board 13 .

[0057] The water pump 19 can input a water source with a certain pressure to overcome the resistance of the water inlet valve 3, so as to facilitate the water to be injected into the kettle 1 from the bottom. The main circuit board 11 controls the water adding and heating process of the kettle; the weight sensing controller 18, assisted by the signal transmission between the transmitter 14 and the receiver 15, can more reliably control the opening and closing of the water pump 19 and control the water adding process in the kettle body 2. Specifically, after turning on the water injection switch, the water injection joint 4 on the base rises and docks with the water inlet valve 3 of the kettle body, and the transmitter 14 sends a signal to the receiver. After receiving the signal, the receiver 15 prompts that the water injection joint 4 and the water inlet valve 3 are docked. At this time, if the weight sensed by the weight sensor 18 meets the preset lower limit weight requirement at the same time, the water pump 19 can be controlled to start normally and inject water into the kettle body 2; when the weight sensed by the weight sensor 18 reaches the preset upper limit weight requirement, the water pump 19 is turned off and water is stopped from being added to the kettle body 2. Generally, from turning on the water injection switch to starting the water pump 19 and starting to add water, there is a delay of about 5 seconds. The auxiliary circuit board 13 is mainly used to receive the water volume signal and the kettle bottom temperature signal detected by the weight sensor, and transmit the signal with the main circuit board 11; the kettle bottom temperature sensor senses the temperature of the kettle bottom to prevent dry boiling.

[0058] For other contents of the electromagnetic kettle described in the present invention, please refer to the prior art and will not be described in detail here.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An electromagnetic kettle, comprising a base, a kettle body that can be placed on the base for use, an electromagnetic heater installed on the base, and a main circuit board arranged in the base and electrically connected to an external power supply, characterized in that: It also includes a water inlet valve arranged at the bottom of the kettle body, a water injection joint arranged on the base and capable of lifting and moving and cooperating with the water inlet valve for sealing and docking, a lifting device for driving the water injection joint to lift and move, and a lifting switch for controlling the lifting device; The lifting device is connected to the water injection joint and is electrically connected to the main circuit board through the lifting switch; The water injection joint comprises a water injection part and a pushing part arranged at the lower end of the water injection part; The water injection part is provided with a water inlet and a water outlet, and the water inlet is connected to an external water source through a water pipe; The lifting device drives the water injection joint to rise or fall through the pushing part; The base is provided with a sink, and the bottom of the sink is provided with a through hole. The water injection joint can be axially slidably passed through the through hole and installed at the sink, and in a non-water injection state, the water injection joint can be lowered to a position where its uppermost end does not exceed the sink; a shoulder ring is provided at one end of the water injection joint close to the water injection part to prevent the water injection joint from leaking out of the through hole; a limiter is provided at the lower part of the water injection joint to prevent the water injection joint from passing through the through hole when rising, and the limiter can limit the rising height of the water injection joint; A magnetic plate is fixed at the bottom of the kettle body, and an electromagnetic block is fixed to the base, which can be powered to generate attraction for the magnetic plate; the electromagnetic block is annular and arranged around the water injection joint; The electromagnetic block protrudes from the panel of the base, and the magnetic attraction is provided with a groove matching the shape of the protruding part of the electromagnetic block.

2. The electromagnetic kettle according to claim 1, characterized in that: The lifting device is a telescopic motor, and the telescopic motor is provided with a telescopic rod, and the telescopic rod is in contact with the pushing part.

3. The electromagnetic kettle according to claim 1, characterized in that: The lifting device is an eccentric motor, and when the eccentric motor rotates, it pushes the pushing part to move up and down.

4. The electromagnetic kettle according to claim 1, characterized in that: The lifting device is a gear motor, the gear motor is provided with a gear, the pushing part comprises a rack meshing with the gear, and the rack is fixed to the lower end of the water injection part along the axial direction of the water injection part.

5. The electromagnetic kettle according to claim 1, characterized in that: A multi-stage one-way valve composed of at least two one-way valves connected in series is arranged at the bottom of the kettle body as a water inlet valve.

6. The electromagnetic kettle according to any one of claims 1 to 5, characterized in that: It also includes a water pump arranged in the base and a water volume control device for controlling the water volume added by the water pump. The water outlet of the water pump is connected to the water injection joint through a water pipe, and the water inlet of the water pump can be connected to an external water source through the water pipe; the water volume control device is electrically connected to the water pump.

7. The electromagnetic kettle according to claim 6, characterized in that: The water volume control device comprises a sub-circuit board and a sensor controller for controlling the water volume added by the water pump, and the sensor controller is electrically connected to the sub-circuit board.

8. The electromagnetic kettle according to claim 7, characterized in that: The main circuit board is provided with a transmitter, and the auxiliary circuit board is provided with a receiver for performing radio signal transmission with the transmitter.

9. The electromagnetic kettle according to claim 7, characterized in that: The sensing controller is a weight sensing controller arranged on the base, and the water addition amount of the water pump is controlled by the weight sensing controller to prevent dry burning.

10. The electromagnetic kettle according to claim 7, characterized in that: It also includes a kettle bottom temperature sensor located at the bottom of the kettle body or the base, and the kettle bottom temperature sensor is electrically connected to the auxiliary circuit board.

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