Positioning driving electromagnetic oven

Abstract

The application discloses a positioning driving electromagnetic oven, which comprises a shell and a magnetic drive module. The shell is provided with a bearing surface. The magnetic drive module comprises a plurality of magnetic drive units. Each magnetic drive unit comprises a base and a coil component and a line switching assembly which are arranged on the base. The line switching assembly comprises a first connecting end portion, a second connecting end portion and an induction switching assembly which are arranged on the base. The coil is connected with the first connecting end portion and the second connecting end portion to form at least part of a first unit path. The induction switching assembly is connected with the first connecting end portion and the second connecting end portion to form at least part of a second unit path. The first unit path and the second unit path are connected in parallel. When a pot exists above the magnetic drive unit, the second unit path is disconnected. When the pot does not exist above the magnetic drive unit, the second unit path is closed. The plurality of magnetic drive units are connected in series to form a power supply series circuit. The design can automatically identify the position of the pot and supply power to the coil component, and accurately drive the pot to heat.

Description

Technical Field

[0001] This invention relates to the field of intelligent kitchenware technology, and in particular to a positioning-driven induction cooker. Background Technology

[0002] With the rapid advancement of technology, people's living standards are also gradually improving. In order to provide users with a better cooking experience, existing induction cookers are equipped with multiple drive coils. Users can place one or more pots on the induction cooker's support surface and then select the drive coil below the pot to power and control it according to the pot's position via buttons or other components. However, in actual use, the operation of selecting the drive coil is rather cumbersome. Users often cannot immediately select the correct drive coil, and due to the large support surface, the pot may not be able to be accurately placed on the corresponding drive coil, resulting in poor cooking results. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a positioning-driven induction cooker that automatically identifies the position of the cookware and supplies power to the corresponding coil component, so that the coil component can accurately drive the cookware to heat up.

[0004] According to a first aspect of the present invention, a positioning-driven induction cooker includes: a housing having a bearing surface for placing a pot; and a magnetic drive module disposed within the housing, the magnetic drive module including a plurality of magnetic drive units distributed below the bearing surface along the extending direction of the bearing surface, each magnetic drive unit including a base and a coil and a circuit switching assembly disposed on the base, the circuit switching assembly including a first connecting end, a second connecting end, and an induction switching assembly disposed on the base, the coil being connected to the first connecting end and the second connecting end respectively to form at least a partial first unit path, and the induction switching assembly being connected to the first connecting end and the second connecting end respectively to form at least a partial second unit path. Two-unit path, the first unit path and the second unit path are connected in parallel, the inductive switching component is used to detect the load signal, the load signal is used to characterize whether there is a pot above the magnetic drive unit, the inductive switching component switches according to the load signal at least in the first on-off state and the second on-off state. When there is a pot above the magnetic drive unit, the second unit path is open and the working current passes through the first unit path. When there is no pot above the magnetic drive unit, the second unit path is closed and the working current passes through the second unit path. Among two adjacent magnetic drive units, the first connection end of one magnetic drive unit is connected to the second connection end of the other magnetic drive unit so that multiple magnetic drive units are connected in series to form a power supply circuit.

[0005] A positioning-driven induction cooker according to an embodiment of the present invention has at least the following features:

[0006] Beneficial effects:

[0007] In this invention, the induction cooker allows users to place one or more pots on the supporting surface of the casing. The power supply current is directly input from one end of the power supply circuit and output from the other end. The induction switching component of one or more magnetic drive units located below the pot detects the presence of the pot, and the second unit circuit of that magnetic drive unit is disconnected, allowing the power supply current to flow through the first unit circuit, thereby driving the coil to operate. The generated magnetic flux acts on the pot, causing it to heat up. When there is no pot above, the second unit circuit of the magnetic drive unit is closed, and the power supply current flows through the second unit circuit, which is equivalent to short-circuiting the coil. The coil does not operate in this case, resulting in minimal energy consumption. This design eliminates the need for the user to select the magnetic drive unit corresponding to the pot; it automatically identifies the position of the pot and supplies power to the corresponding coil, enabling the coil to accurately drive the pot to heat up.

[0008] According to some embodiments of the present invention, the sensing switching component includes a pressure detection element, a processing chip, and a switch element. The switch element is connected to the first connection end and the second connection end respectively to form at least a portion of the second unit path. The pressure detection element is disposed on the base and close to the underside of the bearing surface. The pressure detection element detects whether it is under pressure to form the load signal. The processing chip is connected to the pressure detection element and the switch element respectively. When the pressure detection element is under pressure, the processing chip controls the switch element to open. When the pressure detection element is not under pressure, the processing chip controls the switch element to close.

[0009] According to some embodiments of the present invention, the inductive switching component includes a pressure-sensitive switch disposed on the base and close to the underside of the bearing surface. The pressure-sensitive switch is connected to the first connection end and the second connection end respectively to form at least a portion of the second unit path. When the pressure-sensitive switch is pressed, it is open; when the pressure-sensitive switch is not pressed, it is closed.

[0010] According to some embodiments of the present invention, the base is polygonal, the coil is polygonal disc-shaped, and in a plurality of adjacent magnetic drive units, the edge of the base of one magnetic drive unit is close to the edge of the base of another magnetic drive unit.

[0011] According to some embodiments of the present invention, both the first connecting end and the second connecting end are disposed on the edge of the base.

[0012] According to some embodiments of the present invention, between two adjacent magnetic drive units, the first connection end of one magnetic drive unit and the second connection end of the other magnetic drive unit are plugged into each other.

[0013] According to some embodiments of the present invention, the base is triangular, rectangular or hexagonal.

[0014] According to some embodiments of the present invention, the magnetic drive module further includes flexible wires, wherein a first connection end of one magnetic drive unit is connected to a second connection end of the other magnetic drive unit via the wires between two partially adjacent magnetic drive units.

[0015] According to some embodiments of the present invention, a constant current driving module is further included. The input terminal of the constant current driving module is used to connect to the power supply, and the output terminal of the constant current driving module is connected to both ends of the power supply circuit to output AC power supply current.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a top view of the magnetic drive module of one embodiment of the induction cooker of the present invention;

[0019] Figure 2 This is a bottom view of the magnetic drive module of one embodiment of the induction cooker of the present invention;

[0020] Figure 3 This is a schematic diagram showing the usage state of the magnetic drive module in one embodiment of the induction cooker of the present invention;

[0021] Figure 4 This is a schematic diagram of the power supply circuit structure;

[0022] Figure 5 This is a three-dimensional schematic diagram of the magnetic drive unit;

[0023] Figure 6 This is a schematic diagram of the internal structure of the magnetic drive unit;

[0024] Figure 7 This is a schematic block diagram of one embodiment of a magnetic drive unit;

[0025] Figure 8 This is a schematic diagram of another embodiment of the magnetic drive unit.

[0026] Figure 9 This is a schematic diagram of the magnetic drive module when the base is triangular.

[0027] Figure 10 This is a schematic diagram of the magnetic drive module when the base is rectangular.

[0028] Figure label:

[0029] Magnetic drive module 100; magnetic drive unit 200; base 300; coil component 400; circuit switching component 500; first connection end 510; second connection end 520; induction switching component 530; pressure detection component 531; processing chip 532; switch component 533; pressure-sensitive switch 534; wire component 600; pot body 700. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the orientation descriptions, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer", indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0032] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figure 1-10 As shown, a positioning-driven induction cooker according to a first aspect embodiment of the present invention includes a housing (not shown in the figure) and a magnetic drive module 100. The housing is provided with a bearing surface for placing a pot body 700. The magnetic drive module 100 is disposed inside the housing and includes a plurality of magnetic drive units 200. The plurality of magnetic drive units 200 are distributed below the bearing surface along the extension direction of the bearing surface. Each magnetic drive unit 200 includes a base 300 and coil members 400 and a circuit switching assembly 500 disposed on the base 300. The circuit switching assembly 500 includes a first connecting end 510, a second connecting end 520 and an induction switching assembly 530 disposed on the base 300. The coil is connected to the first connecting end 510 and the second connecting end 520 respectively to form at least a partial first unit path. The induction switching assembly 530 is connected to the first connecting end 510. The first unit path and the second unit path are connected to form at least a partial second unit path. The first unit path and the second unit path are connected in parallel. The inductive switching component 530 is used to detect the load signal, which is used to characterize whether there is a pot 700 above the magnetic drive unit 200. The inductive switching component 530 switches according to the load signal in at least the first on / off state and the second on / off state. When there is a pot 700 above the magnetic drive unit 200, the second unit path is open and the working current passes through the first unit path. When there is no pot 700 above the magnetic drive unit 200, the second unit path is closed and the working current passes through the second unit path. Among two adjacent magnetic drive units 200, the first connection end 510 of one magnetic drive unit 200 is connected to the second connection end 520 of the other magnetic drive unit 200 so that multiple magnetic drive units 200 are connected in series to form a power supply circuit.

[0035] The housing can be selected from conventional induction cooker housings, typically including a base and a microcrystalline panel (not shown in the figure). The base and the microcrystalline panel are connected and form a cavity inside. The magnetic drive module 100 is set on the base and located in the cavity. The housing is also equipped with a control module, which includes a control circuit board and operation buttons (not shown in the figure). The user inputs control commands through the operation buttons, and the control circuit board can adjust the heating power of the induction cooker according to the control commands. Specifically, it can adjust the magnitude of the power supply current input to the power supply circuit.

[0036] In some embodiments of the present invention, a constant current driving module (not shown in the figure) is also included. The input terminal of the constant current driving module is used to connect to the power supply, and the output terminal of the constant current driving module is connected to both ends of the power supply circuit to output AC power supply current.

[0037] The constant current drive module can be selected from conventional AC constant current sources. The control circuit board can be connected to the constant current drive module to adjust the magnitude of the constant current value and output a constant power supply current, so that the current through each coil is approximately equal, in order to control the heating power.

[0038] In this invention, the induction cooker allows the user to place one or more pots 700 on the supporting surface of the casing. The power supply current is directly input from one end of the power supply circuit and output from the other end. The induction switching component 530 of one or more magnetic drive units 200 located below the pot 700 detects the presence of the pot 700. The second unit circuit of the magnetic drive unit 200 is disconnected, and the power supply current flows through the first unit circuit, thereby driving the coil 400 to operate. The generated magnetic flux acts on the pot 700, causing the pot 700 to heat up. However, the second unit circuit of the magnetic drive unit 200 above which there is no pot 700 is closed, and the power supply current flows through the second unit circuit, which is equivalent to short-circuiting the coil 400. The coil 400 does not operate here and basically does not consume any power. This design does not require the user to select the magnetic drive unit 200 corresponding to the pot 700. It automatically identifies the position of the pot and supplies power to the corresponding coil 400, so that the coil 400 can accurately drive the pot to heat up.

[0039] The inductive switching component 530 has various structures, for example, in some embodiments of the present invention, such as... Figure 7 As shown, the sensing switching component 530 includes a pressure detection element 531, a processing chip 532, and a switch element 533. The switch element 533 is connected to the first connection end 510 and the second connection end 520 respectively to form at least a portion of the second unit passage. The pressure detection element 531 is disposed on the base 300 and close to the underside of the bearing surface. The pressure detection element 531 detects whether it is under pressure to form a load signal. The processing chip 532 is connected to the pressure detection element 531 and the switch element 533 respectively. When the pressure detection element 531 is under pressure, the processing chip 532 controls the switch element 533 to open. When the pressure detection element 531 is not under pressure, the processing chip 532 controls the switch element 533 to close.

[0040] The pressure detection element 531 can be a pressure strain gauge, a capacitive touch sensor, a piezoresistor, etc. The pressure detection element 531 is close to the bottom of the bearing surface. When the pot body 700 is placed on the bearing surface, the pressure detection element 531 can sense the presence or absence of the pot body 700 and generate a load signal. The processing chip 532 can be selected from conventional MCUs, MPUs, etc. The switch element 533 can be a semiconductor thyristor or a relay switch. When no pot body 700 is placed on the magnetic drive unit 200, the switch element 533 in the magnetic drive unit 200 is in a normally closed state. When the load signal output by the pressure detection element 531 indicates that the pot body 700 is placed on the magnetic drive unit 200, the processing chip 532 controls the switch element 533 to open according to the load signal.

[0041] In some embodiments of the present invention, such as Figure 8 As shown, the sensing switching component 530 may include a pressure-sensitive switch 534. The pressure-sensitive switch 534 is disposed on the base 300 and close to the underside of the bearing surface. The pressure-sensitive switch 534 is connected to the first connection end 510 and the second connection end 520 respectively to form at least a portion of the second unit passage. When the pressure-sensitive switch 534 is pressed, it is open; when the pressure-sensitive switch 534 is not pressed, it is closed.

[0042] The varistor 534 can be selected from conventional touch switches, varistors, semiconductor varistor 534 elements, etc. The varistor 534 is a normally closed switch, which opens when the varistor 534 is pressed.

[0043] It should be noted that the coil 400 has impedance. When the varistor 534 or the switch 533 is closed, the resistance can be considered low under ideal conditions, which can short-circuit the first unit path where the coil 400 is located.

[0044] In some embodiments of the present invention, such as Figure 1 , 2 As shown in Figures 3, 5, and 6, the base 300 is polygonal, the coil 400 is polygonal disc-shaped, and among the multiple adjacent magnetic drive units 200, the edge of the base 300 of one magnetic drive unit 200 is close to the edge of the base 300 of another magnetic drive unit 200.

[0045] The outer contour of the base 300 is polygonal. Multiple magnetic drive units 200 in the magnetic drive module 100 can be spliced ​​together by having the edge of the base 300 of one magnetic drive unit 200 close to the edge of the base 300 of another magnetic drive unit 200. The coil 400 is a polygonal disc surrounding the base 300 through a wire body, which reduces the gaps between the multiple magnetic drive units 200. Users can place the pot 700 on the bearing surface at will. When the pot 700 is located between multiple magnetic drive units 200, the coils of multiple magnetic drive units 200 operate, and more magnetic flux passes through the pot 700, making the pot 700 heat up better.

[0046] Specifically, such as Figure 1 , 2 As shown in Figure 3, the base 300 can be a regular hexagon. In some embodiments of the present invention, such as... Figure 9 The base 300 shown can be triangular, or as... Figure 10 As shown, the base 300 can be rectangular.

[0047] In some embodiments of the present invention, such as Figure 5 , 6 As shown, the first connecting end 510 and the second connecting end 520 are both located on the edge of the base 300. When two magnetic drive units 200 are spliced ​​together, the edge of the base 300 of one magnetic drive unit 200 is close to the edge of the base 300 of the other magnetic drive unit 200. At this time, the first connecting end 510 and the second connecting end 520 located on the edge can be engaged accordingly, making it more convenient to use. It can also make the plane formed by splicing multiple magnetic drive units 200 flatter and better fit the lower surface of the bearing surface, so that the sensing switching component 530 can sense it.

[0048] In some embodiments of the present invention, the first connecting end 510 of one magnetic drive unit 200 and the second connecting end 520 of the other magnetic drive unit 200 are interlocked between two adjacent magnetic drive units 200. The interlocking method is more convenient, and the first connecting end 510 and the second connecting end 520 can be selected from conventional male and female plug-in terminals. The first connecting end 510 protrudes from the side wall of the base 300, while the second connecting end 520 is recessed into the side wall of the base 300. The interlocking direction can be parallel to the horizontal direction. Through the interlocking method, the edges of the base 300 of the two magnetic drive units 200 can be better close together.

[0049] In some embodiments of the present invention, such as Figure 1 , 2As shown, the magnetic drive module 100 also includes a flexible wire 600. Between two partially adjacent magnetic drive units 200, the first connection end 510 of one magnetic drive unit 200 and the second connection end 520 of the other magnetic drive unit 200 are connected by the wire 600. When the two magnetic drive units 200 cannot be properly attached at certain locations, the wire 600 is used to realize the electrical connection between the two magnetic drive units 200, maintain the continuity of the power supply circuit, and thus construct magnetic drive modules 100 of various shapes according to product requirements, making manufacturing more flexible.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A positioning-driven induction cooker, characterized in that, include: The shell is provided with a support surface for placing the pot. A magnetic drive module is disposed within the housing. The magnetic drive module includes multiple magnetic drive units distributed below the bearing surface along its extension direction. Each magnetic drive unit includes a base and coil components and a circuit switching assembly disposed on the base. The circuit switching assembly includes a first connection end, a second connection end, and an inductive switching component disposed on the base. The coil is connected to both the first and second connection ends to form at least a partial first unit path. The inductive switching component is connected to both the first and second connection ends to form at least a partial second unit path. The first and second unit paths are connected in parallel. The inductive switching component is used to detect a load signal, which indicates whether a pot is present above the magnetic drive unit. The inductive switching component switches according to the load signal in at least a first on / off state and a second on / off state. When a pot is present above the magnetic drive unit, the second unit path is disconnected, and the operating current passes through the first unit path. When no pot is present above the magnetic drive unit, the second unit path is closed, and the operating current passes through the second unit path, and the coil is short-circuited. Between two adjacent magnetic drive units, the first connection end of one magnetic drive unit is connected to the second connection end of the other magnetic drive unit so that multiple magnetic drive units are connected in series to form a power supply circuit.

2. The positioning-driven induction cooker according to claim 1, characterized in that: The sensing switching component includes a pressure detection element, a processing chip, and a switch element. The switch element is connected to the first connection end and the second connection end respectively to form at least a portion of the second unit path. The pressure detection element is disposed on the base and close to the underside of the bearing surface. The pressure detection element detects whether it is under pressure to generate the load signal. The processing chip is connected to the pressure detection element and the switch element respectively. When the pressure detection element is under pressure, the processing chip controls the switch element to open. When the pressure detection element is not under pressure, the processing chip controls the switch element to close.

3. A positioning-driven induction cooker according to claim 1, characterized in that: The sensing switching component includes a pressure-sensitive switch, which is disposed on the base and close to the underside of the bearing surface. The pressure-sensitive switch is connected to the first connection end and the second connection end respectively to form at least a portion of the second unit path. When the pressure-sensitive switch is pressed, it is open; when the pressure-sensitive switch is not pressed, it is closed.

4. A positioning-driven induction cooker according to claim 1, characterized in that: The base is polygonal, the coil is polygonal and disc-shaped, and in a plurality of adjacent magnetic drive units, the edge of the base of one magnetic drive unit is close to the edge of the base of another magnetic drive unit.

5. A positioning-driven induction cooker according to claim 4, characterized in that: Both the first connecting end and the second connecting end are located at the edge of the base.

6. A positioning-driven induction cooker according to claim 5, characterized in that: Between two adjacent magnetic drive units, the first connection end of one magnetic drive unit and the second connection end of the other magnetic drive unit are plugged into each other.

7. A positioning-driven induction cooker according to claim 4, characterized in that: The base is triangular, rectangular, or hexagonal.

8. A positioning-driven induction cooker according to claim 1, characterized in that: The magnetic drive module also includes flexible wires, in which a first connection end of one magnetic drive unit is connected to a second connection end of the other magnetic drive unit via the wires between two partially adjacent magnetic drive units.

9. A positioning-driven induction cooker according to claim 1, characterized in that, It also includes a constant current drive module, the input terminal of which is connected to the power supply, and the output terminal of which is connected to both ends of the power supply circuit to output AC power supply current.

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