An electric heating furnace having a heating power adjusting device

Abstract

The utility model provides an electric heating furnace with heating power adjusting device, including cooking main part and the heating assembly of setting in cooking main part, and heating power adjusting device includes adjusting ring, circuit board and control panel, adjusting ring rotation setting is on cooking main part, circuit board electricity is connected control panel, control panel electricity is connected heating assembly, is provided with two -way detection switch on circuit board, adjusting ring rotation adjusts and acts on two -way detection switch, and two -way detection switch transmits signal to control panel through circuit board to make control panel adjust the heating power of heating assembly, the utility model discloses through setting heating power adjusting device, and heating power adjusting device includes adjusting ring, circuit board and control panel, is provided with two -way detection switch on circuit board, and adjusting ring rotation adjusts and acts on two -way detection switch, and two -way detection switch transmits signal to control panel through circuit board to make control panel adjust the heating power of heating assembly, and this heating power adjusting mode is not affected by voltage fluctuation and environmental temperature.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace technology, and in particular to an electric furnace with a heating power adjustment device. Background Technology

[0002] Chinese Patent Document No. CN215259970U, published on November 21, 2021, discloses an electric ceramic stove and cooking equipment. The electric ceramic stove includes a shell, an electronic control component, and two knobs. The electronic control component is located inside the shell. The two knobs are respectively located on opposite sides of the shell and are connected to the electronic control component to adjust the heating power and heating time. This electric ceramic stove, with its electronic control component inside the shell and two knobs connected to the electronic control component on opposite sides of the shell, adjusts the heating power and heating time. While this method adjusts the heating power by rotating the power knob to adjust the resistance of the power potentiometer, thereby regulating the voltage or current of the heating element, it is inaccurate and easily affected by voltage fluctuations and ambient temperature.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this utility model is to provide an electric furnace with a heating power adjustment device that is simple in structure, precise in adjustment, convenient in operation, stable and reliable, and highly practical, so as to overcome the shortcomings of the prior art.

[0005] An electric oven with a heating power adjustment device designed for this purpose includes a cooking body and a heating component disposed within the cooking body. The heating power adjustment device comprises an adjustment ring, a circuit board, and a control board. The adjustment ring is rotatably mounted on the cooking body. The circuit board is electrically connected to the control board, and the control board is electrically connected to the heating component. A bidirectional detection switch is provided on the circuit board. When the adjustment ring rotates, it acts on the bidirectional detection switch. The bidirectional detection switch transmits a signal to the control board through the circuit board, causing the control board to adjust the heating power of the heating component.

[0006] The adjusting ring has several adjusting teeth distributed around its circumference. The bidirectional detection switch is equipped with a swing arm. When the adjusting ring rotates, it acts on the swing arm through the adjusting teeth, causing the swing arm to swing. When the swing arm swings, it transmits a signal to the control board through the circuit board.

[0007] There is a gap between two adjacent adjusting teeth. When the swing arm swings, the adjusting teeth pass over the swing arm so that the swing arm returns to the gap.

[0008] The cooking body has graduations, and the adjustment ring has markings for aligning with the graduations; or, the adjustment ring has graduations, and the cooking body has markings for aligning with the graduations.

[0009] A support ring is fixedly installed on the cooking body, and several support bearings are distributed around the adjustment ring. The adjustment ring is supported on the support ring through the support bearings. When the adjustment ring rotates, it causes the support bearings to move on the support ring.

[0010] The support bearing includes a bearing housing and balls. The bearing housing is fixed on the adjusting ring, and the balls are rolled on the bearing housing. The support ring is provided with a movable groove. When the support bearing moves on the support ring, the balls roll on the movable groove.

[0011] The bearing housing has a mounting groove with an undercut at the bottom. At least part of the ball is placed in the mounting groove, and the lower part of the ball rests against the undercut.

[0012] The adjusting ring has a guide edge, and the support ring has a guide groove. The guide edge is inserted into the guide groove, and when the adjusting ring rotates, it drives the guide edge to rotate on the guide groove.

[0013] The adjusting ring includes an outer decorative ring and an inner adjusting mating ring, which can be integrated or separate. The outer decorative ring is provided with an operating part for rotating the adjusting ring, and the adjusting teeth are circumferentially distributed on the inner side of the inner adjusting mating ring.

[0014] The cooking unit includes a panel assembly, a middle ring assembly, and a bottom cover assembly. The middle ring assembly includes an adjustment ring and a support ring. The panel assembly is fixed on the support ring, and the support ring is fixed on the bottom cover assembly. An electrical cavity is formed between the panel assembly, the middle ring assembly, and the bottom cover assembly. The heating element, circuit board, and control board are located inside the electrical cavity.

[0015] This utility model discloses an electric furnace with a heating power adjustment device. The heating power adjustment device includes an adjustment ring, a circuit board, and a control board. A two-way detection switch is installed on the circuit board. When the adjustment ring rotates, it acts on the two-way detection switch. The two-way detection switch transmits a signal to the control board through the circuit board, so that the control board can adjust the heating power of the heating component. This heating power adjustment method is not affected by voltage fluctuations and ambient temperature, can accurately adjust the heating power of the heating component, and has a wide power adjustment range and high reliability. This heating power adjustment device is suitable for electric heating plate type electric furnaces, induction cooker type electric furnaces, or electric ceramic cooker type electric furnaces, etc. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the electric furnace in one embodiment of the present invention.

[0017] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 3 This is a cross-sectional view of the electric furnace from another position in one embodiment of the present invention.

[0019] Figure 4 for Figure 3 A magnified structural diagram at point B in the middle.

[0020] Figure 5 This is a schematic diagram of the overall structure of the electric furnace in one embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the overall structure of the circuit board in one embodiment of the present invention.

[0022] Figure 7 This is an exploded structural diagram of the middle ring component in one embodiment of the present invention.

[0023] Figure 8 This is an exploded structural diagram of the middle ring component from another position in one embodiment of the present invention.

[0024] Figure 9 This is an exploded structural diagram of an electric furnace in one embodiment of the present invention.

[0025] Figure 10 This is an exploded view of the panel assembly in one embodiment of the present invention.

[0026] Figure 11 This is an exploded structural diagram of the bottom cover assembly in one embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] See Figures 1-11This electric oven with a heating power adjustment device includes a cooking body 1 and a heating element 32 disposed within the cooking body 1. The heating element 32 is a heating plate. The heating power adjustment device includes an adjustment ring 2, a circuit board 3, and a control board 4. The adjustment ring 2 is rotatably mounted on the cooking body 1. The circuit board 3 is electrically connected to the control board 4, and the control board 4 is electrically connected to the heating element 32. A two-way detection switch 5 is disposed on the circuit board 3. When the adjustment ring 2 rotates, it acts on the two-way detection switch 5. The two-way detection switch 5 transmits a signal to the control board 4 through the circuit board 3, so that the control board 4 adjusts the heating power of the heating element 32. The two-way detection switch 5 can detect triggering in two directions, namely clockwise and counterclockwise rotation. When the adjustment ring 2 rotates clockwise or counterclockwise, it acts on the control board 4. The bidirectional detection switch 5 determines the rotation direction. The circuit board 3 collects and processes the original electrical signal generated by the bidirectional detection switch 5, and then converts it into a signal that the control board 4 can recognize. The control board 4 receives the "direction" and "number" signals from the circuit board 3, and determines the adjusted heating power based on these signals (for example, turning clockwise once increases the power by one level, and turning counterclockwise once decreases the power by one level). Then, the control board 4 actually changes the power of the heating component 32 based on the determined adjusted heating power, thereby realizing the adjustment of the heat level. The control board 4 processes the signals and generates control commands to dynamically adjust the power supplied to the heating component 32 (such as by changing the phase angle, periodic switching, thyristor, etc.), thereby precisely controlling the heating power.

[0029] The adjusting ring 2 has several adjusting teeth 6 distributed around its circumference. A swing arm 7 is provided on the bidirectional detection switch 5. When the adjusting ring 2 rotates, it acts on the swing arm 7 through the adjusting teeth 6, causing the swing arm 7 to swing. When the swing arm 7 swings, it transmits a signal to the control board 4 through the circuit board 3. Each adjusting tooth 6 corresponds to a fixed adjustment amount. When an adjusting tooth 6 contacts the swing arm 7, it pushes the swing arm 7 to swing. The swing of the swing arm 7 triggers the electrical contacts inside the bidirectional detection switch 5, generating an electrical signal (pulse signal). The control board 4 determines the power adjustment range based on the number of received electrical signals (for example, rotating through 3 adjusting teeth 6 increases or decreases the power level by 3 levels), realizing precise digital step control. In addition, this mechanical tooth-arm structure provides a clear "click" feel, giving the user clear feedback during operation. At the same time, the mechanical trigger has strong anti-interference ability and high reliability.

[0030] There is a gap 8 between two adjacent adjusting teeth 6. When the swing arm 7 swings, the adjusting teeth 6 pass over the swing arm 7 so that the swing arm 7 returns to the gap 8. When the swing arm 7 swings, the tooth tip of the adjusting teeth 6 will gradually pass over the end of the swing arm 7. Once the tooth tip passes, the swing arm 7 loses the obstruction of the teeth and quickly rebounds (resets) to the initial position under the action of its own spring or elasticity. This reset action will fall into the gap 8 before the next adjusting tooth 6. After the swing arm 7 resets, when the user continues to rotate the adjusting ring 2, the next adjusting tooth 6 will approach the swing arm and repeat the first step of the pushing process.

[0031] The cooking body 1 has a scale 9, and the adjustment ring 2 has a mark 10 for aligning with the scale 9; or, the adjustment ring 2 has a scale 9, and the cooking body 1 has a mark 10 for aligning with the scale 9. When the user rotates the adjustment ring 2, the mark 10 will move relative to the scale 9. When the mark 10 is aligned with a certain scale, it indicates that the current setting is the power represented by that scale. This structure provides the user with a clear and intuitive visual reference. The user can accurately know the currently set power level, and can also accurately adjust to a specific level as needed, without blindly guessing or repeatedly trying.

[0032] A support ring 11 is fixedly installed on the cooking body 1. Several support bearings 12 are distributed around the circumference of the adjusting ring 2. The adjusting ring 2 is supported on the support ring 11 by the support bearings 12. When the adjusting ring 2 rotates, it drives the support bearings 12 to move on the support ring 11. The multiple support bearings 12 distributed around the circumference provide uniform support, ensuring that the adjusting ring 2 will not wobble when rotating and remains stable.

[0033] The support bearing 12 includes a bearing housing 13 and balls 14. The bearing housing 13 is fixed on the adjusting ring 2, and the balls 14 are rolled on the bearing housing 13. The support ring 11 is provided with a movable groove 15. When the support bearing 12 moves on the support ring 11, the balls 14 roll on the movable groove 15, and the bottom of the balls 14 is supported on the bottom wall of the movable groove 15. When the balls 14 roll, there is rolling friction between them and the bottom wall of the movable groove 15, which can minimize the rotational resistance and make the adjusting ring 2 rotate very smoothly and lightly.

[0034] The bearing housing 13 is provided with a mounting groove 16, and the bottom of the mounting groove 16 is provided with an undercut 17. The ball 14 is at least partially disposed in the mounting groove 16, and the lower part of the ball 14 abuts against the undercut 17. The bottom of the ball 14 extends out of the mounting groove 16, so that the ball 14 can roll on the mounting groove 16 and the ball 14 will not fall out of the mounting groove 16.

[0035] The support ring 11 has several positioning mounting holes 27 distributed around its perimeter, and the bearing housing 13 is positioned and mounted on the positioning mounting holes 27.

[0036] The bottom of the adjusting ring 2 is provided with a guide edge 18, and the support ring 11 is provided with a guide groove 19. The guide edge 18 is inserted into the guide groove 19. When the adjusting ring 2 rotates, it drives the guide edge 18 to rotate on the guide groove 19, so as to guide the rotation of the adjusting ring 2 and prevent the adjusting ring 2 from shifting forward, backward or left and right when it rotates.

[0037] The adjusting ring 2 includes an outer decorative ring 20 that is integral or separate from an inner adjusting ring 21. The outer decorative ring 20 is provided with an operating part 22 for rotating the adjusting ring 2, and the adjusting teeth 6 are circumferentially distributed on the inner side of the inner adjusting ring 21. In this embodiment, the outer decorative ring 20 and the inner adjusting ring 21 are separate. The outer decorative ring 20 is made of aluminum, which makes the electric furnace look more upscale. The inner adjusting ring 21 is made of plastic, which has a lower cost.

[0038] The outer decorative ring 20 has several positioning ribs 28 distributed around its circumference, and the inner adjusting ring 21 has several positioning notches 29 distributed around its circumference. The positioning ribs 28 are inserted into the positioning notches 29 to achieve mutual positioning between the outer decorative ring 20 and the inner adjusting ring 21, so that the outer decorative ring 20 can drive the inner adjusting ring 21 to rotate when it rotates.

[0039] The cooking body 1 includes a panel assembly 23, a middle ring assembly 24, and a bottom cover assembly 25. The middle ring assembly 24 includes an adjustment ring 2 and a support ring 11. The panel assembly 23 is fixed on the support ring 11, and the support ring 11 is fixed on the bottom cover assembly 25. An electrical cavity 26 is formed between the panel assembly 23, the middle ring assembly 24, and the bottom cover assembly 25. The heating component 32, the circuit board 3, and the control board 4 are disposed in the electrical cavity 26.

[0040] The panel assembly 23 includes a mounting ring 30 and a microcrystalline plate 31. The mounting ring 30 and the heating component 32 are fixed to the support ring 11 by screws. The microcrystalline plate 31 is mounted on the top side of the mounting ring 30, and the heating component 32 is located below the microcrystalline plate 31. The bottom cover assembly 25 includes a bottom cover 33 and several support feet 34 disposed at the bottom of the bottom cover 33. The support ring 11 is fixed to the bottom cover 33 by screws. The mounting ring 30, the support ring 11 and the bottom cover 33 are separately arranged, which facilitates easy demolding during production.

[0041] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electric oven with a heating power adjustment device, comprising a cooking body (1) and a heating element (32) disposed within the cooking body (1), characterized in that: The heating power adjustment device includes an adjustment ring (2), a circuit board (3) and a control board (4). The adjustment ring (2) is rotatably mounted on the cooking body (1). The circuit board (3) is electrically connected to the control board (4). The control board (4) is electrically connected to the heating component (32). A two-way detection switch (5) is provided on the circuit board (3). When the adjustment ring (2) rotates, it acts on the two-way detection switch (5). The two-way detection switch (5) transmits the signal to the control board (4) through the circuit board (3) so that the control board (4) adjusts the heating power of the heating component (32).

2. The electric furnace with a heating power adjustment device according to claim 1, characterized in that: The adjustment ring (2) has several adjustment teeth (6) distributed around its circumference. The bidirectional detection switch (5) is equipped with a swing arm (7). When the adjustment ring (2) rotates, it acts on the swing arm (7) through the adjustment teeth (6) to make the swing arm (7) swing. When the swing arm (7) swings, it transmits the signal to the control board (4) through the circuit board (3).

3. The electric furnace with a heating power adjustment device according to claim 2, characterized in that: There is a gap (8) between two adjacent adjusting teeth (6). When the swing arm (7) swings, the adjusting teeth (6) pass over the swing arm (7) so that the swing arm (7) returns to the gap (8).

4. The electric furnace with a heating power adjustment device according to claim 1, characterized in that: The cooking body (1) is provided with a scale (9), and the adjustment ring (2) is provided with a mark (10) for aligning with the scale (9); or, the adjustment ring (2) is provided with a scale (9), and the cooking body (1) is provided with a mark (10) for aligning with the scale (9).

5. The electric furnace with a heating power adjustment device according to claim 1, characterized in that: A support ring (11) is fixedly installed on the cooking body (1). Several support bearings (12) are distributed around the adjustment ring (2). The adjustment ring (2) is supported on the support ring (11) through the support bearings (12). When the adjustment ring (2) rotates, it drives the support bearings (12) to move on the support ring (11).

6. The electric furnace with a heating power adjustment device according to claim 5, characterized in that: The support bearing (12) includes a bearing housing (13) and balls (14). The bearing housing (13) is fixed on the adjusting ring (2), and the balls (14) are rolled on the bearing housing (13). The support ring (11) is provided with a movable groove (15). When the support bearing (12) moves on the support ring (11), the balls (14) roll on the movable groove (15).

7. The electric furnace with a heating power adjustment device according to claim 6, characterized in that: The bearing housing (13) is provided with a mounting groove (16), and a buckle (17) is provided at the bottom of the mounting groove (16). The ball (14) is at least partially disposed in the mounting groove (16), and the lower part of the ball (14) rests against the buckle (17).

8. The electric furnace with a heating power adjustment device according to claim 5, characterized in that: The adjusting ring (2) is provided with a guide edge (18), and the support ring (11) is provided with a guide groove (19). The guide edge (18) is inserted into the guide groove (19). When the adjusting ring (2) rotates, it drives the guide edge (18) to rotate on the guide groove (19).

9. The electric furnace with a heating power adjustment device according to claim 2, characterized in that: The adjustment ring (2) includes an outer decorative ring (20) that is integral or separate and an inner adjustment mating ring (21). The outer decorative ring (20) is provided with an operating part (22) for rotating the adjustment ring (2). The adjustment teeth (6) are circumferentially distributed on the inner side of the inner adjustment mating ring (21).

10. The electric furnace with a heating power adjustment device according to claim 5, characterized in that: The cooking body (1) includes a panel assembly (23), a middle ring assembly (24) and a bottom cover assembly (25). The middle ring assembly (24) includes an adjustment ring (2) and a support ring (11). The panel assembly (23) is fixed on the support ring (11), and the support ring (11) is fixed on the bottom cover assembly (25). An electrical cavity (26) is formed between the panel assembly (23), the middle ring assembly (24) and the bottom cover assembly (25). The heating assembly (32), the circuit board (3) and the control board (4) are disposed in the electrical cavity (26).

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