Tea cooking stove

Abstract

The utility model relates to a household appliance, and discloses a tea boiling stove, when a water container is placed on a heating plate and the side wall of the water container presses the part, extending out of a mounting groove, of a telescopic block, the telescopic block can contract inwards and extrude a movable contact of a microswitch so as to drive the microswitch to conduct a power supply loop of the heating plate; on the contrary, when the water container leaves the heating plate, the elastic piece can drive the telescopic block to rebound, so that the microswitch is reset, and the power supply loop of the heating plate is cut off. Therefore, the power supply loop of the heating disc can be conducted, and the heating disc can be started. On the contrary, when the water container leaves the heating plate and the side wall of the water container is separated from the sensing device, the microswitch is reset to cut off the power supply loop of the heating plate, so that the heating plate stops working. Therefore, not only is electric energy saved, but also safety can be ensured.

Description

Technical Field

[0001] The utility model relates to a household appliance, in particular to a tea boiler. Background Art

[0002] A tea boiler is a convenient and fast household appliance used to boil water for making hot drinks such as tea and coffee. It is usually composed of a base, a heating plate arranged on the upper surface of the base, and a control panel. The use of the tea boiler is very simple. Just place the water container on the heating plate, and then trigger the control button on the control panel to start the heating plate. After the heating plate boils the water, trigger the control button again to stop the heating plate. For example, the invention patent with announcement number CN105982556B discloses a similar tea boiler.

[0003] When using the above-mentioned tea boiler, the heating plate needs to be started and stopped by triggering a control button. However, in actual use, when the user removes the boiled water container from the heating plate, he usually forgets to turn off the heating plate, which not only wastes electricity but also poses a great safety hazard, so there is room for improvement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a tea boiler, which can determine whether a water container is placed above the heating plate through a sensing device on one side of the heating plate. If it is detected that the water container is placed on the heating plate, the heating plate can be started; on the contrary, if the water container leaves the heating plate, the power supply circuit of the heating plate can be automatically cut off, thereby saving electricity and ensuring safety.

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

[0006] A tea boiler comprises a base and a heating plate arranged on the upper surface of the base, a sensing device is arranged on one side of the heating plate, the sensing device comprises a shell arranged on the base, a mounting groove opened on the inner side wall of the shell, and a normally open micro switch arranged at the bottom of the mounting groove, the micro switch is connected in series to a power supply circuit of the heating plate, a telescopic block is slidably arranged in the mounting groove, and an elastic member is arranged between the telescopic block and the bottom of the mounting groove to drive one end of the telescopic block away from the micro switch to extend out of the mounting groove opening;

[0007] When the water container is placed on the heating plate and the side wall of the water container presses the part of the telescopic block extending out of the mounting slot, the telescopic block can shrink inward and squeeze the moving contact of the micro switch to drive the micro switch to conduct the power supply circuit of the heating plate;

[0008] On the contrary, when the water container leaves the heating plate, the elastic member can drive the telescopic block to rebound, so as to reset the micro switch, thereby cutting off the power supply circuit of the heating plate.

[0009] By adopting the above scheme, it is possible to effectively judge whether the water container is placed on the heating plate by the docking state between the water container and the sensing device. When the water container is placed above the heating plate and its side wall is docked with the sensing device, the micro switch is closed so that the power supply circuit of the heating plate can be turned on, thereby starting the heating plate. Conversely, when the water container leaves the heating plate, the side wall of the water container is separated from the sensing device, and the micro switch is reset to cut off the power supply circuit of the heating plate, thereby stopping the heating plate. In this way, not only electric energy is saved, but also safety is ensured.

[0010] Preferably, the inner wall of the mounting groove is provided with a circle of limit ring groove near the micro switch, and the outer wall of the telescopic block is provided with a circle of limit convex ring slidably connected to the limit ring groove near the micro switch.

[0011] By adopting the above solution, the telescopic block slidably connected in the installation groove will not be separated from the installation groove, which is more humane.

[0012] Preferably, the elastic member is a compression spring, and two ends of the compression spring are respectively in contact with the bottom of the installation groove and the opposite surface of the telescopic block.

[0013] By adopting the above solution, the compression spring has a simple structure and a long service life, and can provide good elastic supporting force, so that the resetting of the telescopic block is more stable and rapid.

[0014] Preferably, a protrusion for pressing the moving contact of the micro switch is provided at one end of the telescopic block close to the micro switch.

[0015] By adopting the above solution, the convex block can improve the efficiency and accuracy of the telescopic block squeezing the micro switch, which is more humane.

[0016] Preferably, the protrusion is clamped on the end of the compression spring close to the telescopic block.

[0017] By adopting the above solution, the connection between the compression spring and the telescopic block is made stronger, so that the compression spring can provide a more stable elastic supporting force.

[0018] Preferably, a temperature sensor is provided on one side of the telescopic block away from the micro switch, the temperature sensor is coupled to a controller, a normally closed execution switch is coupled to the controller, the execution switch is connected in series to a power supply circuit of the heating plate, and a temperature threshold is preset in the controller;

[0019] When the side wall of the water container abuts against the side of the telescopic block away from the micro switch, the temperature sensor can detect the temperature of the surface of the water container. When the measured temperature value is greater than or equal to the temperature threshold, the controller controls the execution switch to cut off the power supply circuit of the heating plate to stop the heating plate from running.

[0020] By adopting the above solution, when the water temperature in the water container is heated to a set value, the heating plate can automatically stop working, thereby avoiding waste of electric energy and further improving safety.

[0021] Preferably, the sensing device is connected to the base via male and female connectors.

[0022] The above solution allows users to replace the sensing device with different shell shapes according to different shapes of water containers, so that the sensing device and the water container fit better, thereby improving the detection accuracy of the sensing device and improving the maintenance convenience of the sensing device. The male and female connectors can not only ensure the stability of the connection between the sensing device and the base, but also improve the stability of signal transmission after the internal circuits of the two are connected, thereby improving the user experience of the tea boiler.

[0023] Preferably, a start-stop switch is provided on the outer side of the base, and the start-stop switch is connected in series to the power supply circuit of the heating plate to respond to an external trigger to turn on and off the power supply circuit.

[0024] With the above solution, when the water container is docked with the sensing device, the user can trigger the start-stop switch to turn on and off the power supply circuit of the heating plate, thereby realizing active start-stop control of the heating plate.

[0025] The utility model has a significant technical effect due to the adoption of the above technical solution: through the docking state between the water container and the sensing device, it can be effectively judged whether the water container is placed on the heating plate. When the water container is placed above the heating plate and its side wall is docked with the sensing device, the micro switch is closed so that the power supply circuit of the heating plate can be turned on, so that the heating plate can be started. On the contrary, when the water container leaves the heating plate, the side wall of the water container is separated from the sensing device, and the micro switch is reset to cut off the power supply circuit of the heating plate, so that the heating plate stops working. In this way, not only electric energy is saved, but also safety is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure of this embodiment is shown in FIG. Figure 1 ;

[0027] Figure 2 The structure of this embodiment is shown in FIG. Figure 2 ;

[0028] Figure 3 is a circuit diagram of this embodiment;

[0029] Figure 4 The structure of this embodiment is shown in FIG. Figure 3 ;

[0030] Figure 5 for Figure 4 An enlarged schematic diagram of section A is shown.

[0031] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Base; 2. Heating plate; 3. Induction device; 4. Shell; 5. Mounting slot; 6. Micro switch; 7. Telescopic block; 8. Elastic member; 9. Limit ring groove; 10. Limit convex ring; 11. Bump; 12. Temperature sensor; 13. Controller; 14. Execution switch; 15. Male and female connectors; 16. Start-stop switch; 17. Plug; 18. Socket; 19. Water container. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a tea-making stove disclosed in this embodiment comprises a base 1 and a heating plate 2 arranged on the upper surface of the base 1, and a sensing device 3 is arranged on one side of the heating plate 2. Specifically, the sensing device 3 comprises a shell 4 arranged on the base 1, a mounting groove 5 provided on the inner side wall of the shell 4, and a normally open micro switch 6 arranged at the bottom of the mounting groove 5, the micro switch 6 is connected in series to the power supply circuit of the heating plate 2, a telescopic block 7 is slidably arranged in the mounting groove 5, and an elastic member 8 is arranged between the telescopic block 7 and the bottom of the mounting groove 5 to drive one end of the telescopic block 7 away from the micro switch 6 to extend out of the opening of the mounting groove 5. In this embodiment, the elastic member 8 is a compression spring, and the two ends of the compression spring are respectively abutted against the bottom of the mounting groove 5 and the opposite surface of the telescopic block 7. A protrusion 11 for squeezing the moving contact of the micro switch 6 is arranged at one end of the telescopic block 7 close to the micro switch 6, and the protrusion 11 is cylindrical and clamped to the port of the compression spring close to the telescopic block 7.

[0034] like Figure 3 and Figure 4 As shown, in order to realize active start and stop control of the heating plate 2, a knob-type start and stop switch 16 is provided on the outer side of the base 1. The start and stop switch 16 is connected in series to the power supply circuit of the heating plate 2 to respond to external triggering to realize the on and off of the power supply circuit.

[0035] In this embodiment, when the water container 19 is placed on the heating plate 2 and the side wall of the water container 19 presses the portion of the telescopic block 7 extending out of the mounting slot 5, the telescopic block 7 can be retracted inward and squeeze the moving contact of the micro switch 6 to drive the micro switch 6 to conduct the power supply circuit of the heating plate 2. At this time, by turning the start-stop switch 16 clockwise, the power supply circuit of the heating plate 2 can be completely conducted, so that the heating plate 2 works, thereby heating the tea in the water container 19.

[0036] On the contrary, when the water container 19 leaves the heating plate 2, the elastic member 8 can drive the telescopic block 7 to rebound, so that the micro switch 6 is reset, thereby cutting off the power supply circuit of the heating plate 2. In this way, electric energy can be saved and safety can be improved.

[0037] like Figure 2 As shown, in order to prevent the telescopic block 7 from falling off the mounting groove 5, a circle of limiting ring groove 9 is provided around the inner wall of the mounting groove 5 and near the micro switch 6, and a circle of limiting convex ring 10 is provided around the outer wall of the telescopic block 7 and near the micro switch 6 and is slidably connected to the limiting ring groove 9. The outer diameter of the limiting convex ring 10 is larger than the inner diameter of the mounting groove 5, thereby playing an anti-falling role.

[0038] like Figure 3 and Figure 5 As shown, in order to realize the automatic shutdown of the heating plate 2, a temperature sensor 12 is embedded in the side of the telescopic block 7 away from the micro switch 6, and a controller 13 is coupled to the temperature sensor 12. The controller 13 is preferably a single-chip microcomputer. A normally closed execution switch 14 is coupled to the controller 13, and the execution switch 14 is connected in series to the power supply circuit of the heating plate 2. A temperature threshold is preset in the controller 13, and the temperature threshold can be adjusted according to actual needs to adapt to different scenarios such as boiling water, making tea, and making coffee. For example: in the boiling water scenario, the temperature threshold is set to 100 degrees Celsius. In the coffee making scenario, the temperature threshold can be set to 85 degrees Celsius.

[0039] In this embodiment, taking the water boiling scene as an example, when the side wall of the water container 19 abuts against the side of the telescopic block 7 away from the micro switch 6, the temperature sensor 12 can detect the temperature of the surface of the water container 19. When the measured temperature value is greater than or equal to the temperature threshold, it means that the tea in the water container 19 has boiled, and the controller 13 controls the execution switch 14 to cut off the power supply circuit of the heating plate 2, so that the heating plate 2 stops running. In this way, the purpose of saving electricity can be achieved, and the safety of the tea boiler can be improved.

[0040] In the coffee brewing scenario, when the temperature value measured by the temperature sensor 12 is greater than or equal to the temperature threshold, it means that the lower pot temperature of the water container 19 reaches the optimal temperature for extraction. In order to avoid over-extraction caused by excessive temperature and to prevent the water container 19 from drying out, the controller 13 controls the execution switch 14 to cut off the power supply circuit of the heating plate 2, so that the heating plate 2 stops running.

[0041] The above control process can be implemented with the help of a program built into the controller 13 or an equivalent analog circuit, which is common knowledge in the art and will not be elaborated here.

[0042] like Figure 5As shown, in order to realize the rapid disassembly and replacement of the induction device 3, the induction device 3 is connected to the base 1 through the male and female connectors 15. Specifically, the male and female connectors 15 include a plug 17 arranged at the bottom of the shell 4 and a socket 18 arranged on the upper surface of the base 1 and located on one side of the heating plate 2. When the plug 17 and the socket 18 are connected, not only can the structural connection between the induction device 3 and the base 1 be completed, but also the electrical connection between the internal circuits of the two can be realized.

Claims

1. A tea boiler, comprising a base (1) and a heating plate (2) arranged on the upper surface of the base (1), characterized in that: A sensing device (3) is provided on one side of the heating plate (2), the sensing device (3) comprising a shell (4) provided on the base (1), a mounting groove (5) provided on the inner side wall of the shell (4), and a normally open micro switch (6) provided at the bottom of the mounting groove (5), the micro switch (6) being connected in series to a power supply circuit of the heating plate (2), a telescopic block (7) being slidably provided in the mounting groove (5), and an elastic member (8) being provided between the telescopic block (7) and the bottom of the mounting groove (5) for driving one end of the telescopic block (7) away from the micro switch (6) to extend out of the opening of the mounting groove (5); When the water container (19) is placed on the heating plate (2) and the side wall of the water container (19) presses the portion of the telescopic block (7) extending out of the mounting groove (5), the telescopic block (7) can be retracted inward and squeeze the moving contact of the micro switch (6), thereby driving the micro switch (6) to conduct the power supply circuit of the heating plate (2); On the contrary, when the water container (19) leaves the heating plate (2), the elastic member (8) can drive the telescopic block (7) to rebound, so that the micro switch (6) is reset, thereby cutting off the power supply circuit of the heating plate (2).

2. A tea-making stove according to claim 1, characterized in that: The inner side wall of the mounting groove (5) is provided with a circle of limit ring groove (9) at a position close to the micro switch (6), and the outer side wall of the telescopic block (7) is provided with a circle of limit convex ring (10) slidably connected to the limit ring groove (9) at a position close to the micro switch (6).

3. A tea-making stove according to claim 1, characterized in that: The elastic member (8) is a compression spring, and two ends of the compression spring are respectively in contact with the bottom of the installation groove (5) and the opposite surface of the telescopic block (7).

4. A tea-making stove according to claim 3, characterized in that: One end of the telescopic block (7) close to the micro switch (6) is provided with a protrusion (11) for pressing the moving contact of the micro switch (6).

5. A tea-making stove according to claim 4, characterized in that: The protrusion (11) is clamped on the end of the compression spring close to the telescopic block (7).

6. A tea boiler according to any one of claims 1 to 5, characterized in that: A temperature sensor (12) is arranged on a side of the telescopic block (7) away from the micro switch (6); the temperature sensor (12) is coupled to a controller (13); the controller (13) is coupled to a normally closed execution switch (14); the execution switch (14) is connected in series to a power supply circuit of the heating plate (2); and a temperature threshold is preset in the controller (13); When the side wall of the water container (19) abuts against the side of the telescopic block (7) away from the micro switch (6), the temperature sensor (12) can detect the temperature of the surface of the water container (19). When the measured temperature value is greater than or equal to the temperature threshold, the controller (13) controls the execution switch (14) to cut off the power supply circuit of the heating plate (2), so that the heating plate (2) stops running.

7. A tea boiler according to any one of claims 1 to 5, characterized in that: The sensing device (3) is connected to the base (1) via a male and female connector (15).

8. A tea boiler according to any one of claims 1 to 5, characterized in that: A start / stop switch (16) is arranged on the outside of the base (1), and the start / stop switch (16) is connected in series to the power supply circuit of the heating plate (2) to respond to an external trigger to turn the power supply circuit on and off.

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