Adaptive linkage electromagnetic oven

Abstract

The utility model discloses a kind of self-adaptive linkage electromagnetic stoves, including shell, electromagnetic module, power modulation module, check pot module and control module, electromagnetic module is set to shell and is located in inner cavity, electromagnetic module includes multiple coil units being arranged along the horizontal direction of bearing panel and multiple switch drive units, switch drive unit and coil unit are connected to constitute at least partial drive branch, multiple drive branches are connected in parallel, the input end of power modulation module power modulation module is used to be connected with power supply, the output end of power modulation module is respectively connected with each drive branch to power supply, check pot module is connected with electromagnetic module to collect the resonant frequency of electromagnetic module operation, control module is respectively connected with check pot module and the controlled end of each switch drive unit, control module can respectively control the on-off of each switch drive unit, the design structure is simple and compact, reduce manufacturing and maintenance cost, stable and reliable operation.

Description

Technical Field

[0001] This utility model relates to the field of induction cooker equipment technology, and in particular to an adaptive linkage induction cooker. Background Technology

[0002] Induction cookers, as efficient and convenient kitchen heating devices, are widely used in homes and restaurants. However, traditional single-coil induction cookers have gradually revealed problems such as a fixed heating area and poor adaptability to cookware of different sizes or shapes. To address this, existing technologies have developed induction cooker designs that employ multi-coil units, which can control the operation of the corresponding coil unit based on the amount of surface area covered by the pot placed on the control panel.

[0003] However, existing technologies typically use various sensors to determine the extent of the pot's coverage, which is complex and requires structural modifications to the support panel. It also needs to address issues such as waterproofing and heat insulation, resulting in relatively high manufacturing and maintenance costs, which hinders its widespread application. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an adaptive linkage induction cooker with a simple and compact structure, reduced manufacturing and maintenance costs, and stable and reliable operation.

[0005] An adaptive linkage induction cooker according to a first aspect of the present invention includes: a shell having an inner cavity, wherein a support panel is provided on the top of the inner cavity for placing a pot; an electromagnetic module disposed in the shell and located in the inner cavity, the electromagnetic module including a plurality of coil units arranged horizontally along the support panel and a plurality of switch driving units, the switch driving units and the coil units being connected to form at least a portion of the driving branches, the plurality of driving branches being connected in parallel; a power modulation module, the input terminal of the power modulation module being connected to a power supply, the output terminal of the power modulation module being connected to each of the driving branches to supply power; a pot detection module connected to the electromagnetic module to acquire the resonant frequency of the electromagnetic module during operation; and a control module connected to the pot detection module and the controlled terminals of each of the switch driving units, the control module being capable of controlling the on / off state of each of the switch driving units.

[0006] An adaptive linkage induction cooker according to an embodiment of the present invention has at least the following beneficial effects: This utility model relates to an adaptive linkage induction cooker. Users can place the pot on the support panel. During the initial operation of the induction cooker, the control module sequentially activates each switch drive unit. The power modulation module supplies power to the activated drive branches. The pot detection module collects the resonant frequency of the corresponding drive branch. If the coil unit corresponding to the drive branch is covered by the pot, the resonant frequency is lower; if it is not covered, the resonant frequency is higher. This method identifies which coil units are covered by the pot. The control module then activates the drive branches corresponding to the covered coil units, achieving relatively accurate control of the coil units' coupling heating of the pot. Furthermore, it eliminates the need for additional sensors to detect the pot's placement and coverage. This design is simple and compact, reducing manufacturing and maintenance costs, and ensuring stable and reliable operation.

[0007] According to some embodiments of the present invention, the switch driving unit includes a semiconductor switching device and a relay assembly. The relay assembly includes a relay coil and a relay switch. The relay switch is connected to the coil unit to form at least a partial driving branch. The switching device is connected to the relay coil to form at least a partial control branch. The control branch is connected to a power supply. The control module is connected to the controlled end of the switching device to control the switching on and off of the switching device.

[0008] According to some embodiments of the present invention, the pot detection module includes a first frequency sampling unit and a second frequency sampling unit. The sampling end of the first frequency sampling unit is connected to the beginning end of each drive branch, and the sampling end of the second frequency sampling unit is connected to the end end of each drive branch. The output ends of the first frequency sampling unit and the second frequency sampling unit are both connected to the control module.

[0009] According to some embodiments of the present invention, the first frequency sampling unit includes a resistor R37, a resistor R14, and a capacitor C8. The first end of the resistor R37 is connected to the first end of each driving branch, and the last end of the resistor R37 is connected to the first end of the resistor R14, the first end of the capacitor C8, and the control module, respectively. The last end of the capacitor C8 and the last end of the resistor R14 are grounded.

[0010] According to some embodiments of the present invention, the coil unit is strip-shaped, and multiple coil units are arranged side by side.

[0011] According to some embodiments of the present invention, the power modulation module includes a rectifier unit and a power modulation unit. The input terminal of the rectifier unit is connected to the power supply, the output terminal of the rectifier unit is connected to the beginning of each of the drive branches, the power modulation unit is connected to the end of each of the drive branches, and the control module is connected to the controlled terminal of the power modulation unit to modulate the operating power of the coil unit.

[0012] According to some embodiments of this utility model, the power modulation unit includes a switching transistor IGBT1, a switching transistor Q1, a switching transistor Q2, a switching transistor Q3, resistors R6, R7, R8, and R9, and a diode D3. The input terminal of the switching transistor IGBT1 is connected to the tail end of the drive branch. The controlled terminal of the switching transistor IGBT1 is connected to the beginning ends of resistors R6 and R7, respectively. The tail end of resistor R7 is connected to the positive terminal of diode D3, the output terminal of switching transistor Q1, and the switch... The input terminal of transistor Q3 is connected. The controlled terminal of transistor Q1 is connected to the controlled terminal of transistor Q3, the first end of resistor R9, and the input terminal of transistor Q2. The controlled terminal of transistor Q2 is connected to the first end of resistor R8 and the control module. The output terminals of transistor IGBT1, resistor R6, transistor Q3, and transistor Q2 are all grounded. The cathode of diode D3, the input terminal of transistor Q1, the last end of resistor R8, and the last end of resistor R9 are all connected to the power supply.

[0013] According to some embodiments of the present invention, the adaptive linkage induction cooker further includes a cooktop temperature detection module, which is used to detect the cooktop temperature of the supporting panel, and the cooktop temperature detection module is connected to the control module.

[0014] According to some embodiments of the present invention, the adaptive linkage induction cooker further includes a drive temperature detection module, which is used to detect the drive temperature of the power modulation module, and the drive temperature detection module is connected to the control module.

[0015] According to some embodiments of the present invention, the adaptive linkage induction cooker further includes a fan drive module. A fan is provided inside the housing, and the housing is provided with a ventilation opening communicating with the inner cavity. The fan drive module is connected to the fan to form at least a part of the fan control branch. The fan control branch is used to connect to the power supply. The control module is connected to the controlled end of the fan drive module.

[0016] Additional aspects and advantages of this 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 this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of one embodiment of the induction cooker of this utility model; Figure 2 This is a schematic diagram of the internal structure of one embodiment of the induction cooker of this utility model; Figure 3 This is a circuit diagram of the control module of one embodiment of the induction cooker of this utility model; Figure 4 This is a circuit diagram of the power modulation module of one embodiment of the induction cooker of this utility model; Figure 5 This is a circuit diagram of the furnace surface temperature detection module in one embodiment of the induction cooker of this utility model; Figure 6 This is a circuit diagram of the driving temperature detection module of one embodiment of the induction cooker of this utility model; Figure 7 This is a circuit diagram of the fan drive module of one embodiment of the induction cooker of this utility model; Figure 8 This is a circuit diagram of the relay assembly in one embodiment of the induction cooker of this utility model; Figure 9 This is a circuit diagram of the switching device in one embodiment of the induction cooker of this utility model.

[0018] Figure label: Housing 100; Base 110; Panel 120; Ventilation port 130; Coil unit 210; Switch fitting 220; Relay assembly 230; Power modulation module 300; Rectifier unit 310; Power modulation unit 320; Boiler detection module 400; First frequency sampling unit 410; Second frequency sampling unit 420; Control module 500; Furnace surface temperature detection module 600; Drive temperature detection module 700; Fan drive module 800. Detailed Implementation

[0019] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" 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. If "first" or "second" is used in the description, it is only for the purpose of 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0023] like Figures 1 to 9 As shown, an adaptive linkage induction cooker according to a first aspect embodiment of the present invention includes a housing 100, an electromagnetic module, a power modulation module 300, a pot detection module 400, and a control module 500. The housing 100 has an inner cavity, and a support panel 120 is provided on the top of the inner cavity. The support panel 120 is used to place the pot. The electromagnetic module is disposed in the housing 100 and located in the inner cavity. The electromagnetic module includes a plurality of coil units 210 arranged horizontally along the support panel 120 and a plurality of switch driving units. The coil units 210 are connected to form at least a portion of the drive branches, and multiple drive branches are connected in parallel. The input terminal of the power modulation module 300 is used to connect to the power supply, and the output terminal of the power modulation module 300 is connected to each of the drive branches to supply power. The pot detection module 400 is connected to the electromagnetic module to collect the resonant frequency of the electromagnetic module. The control module 500 is connected to the pot detection module 400 and the controlled terminal of each of the switch drive units, and the control module 500 can control the on / off state of each of the switch drive units.

[0024] The housing 100 typically includes a base 110 and a panel 120. The base 110 and the panel 120 are connected to enclose the inner cavity. The base 110 can be made of an alloy material, and the panel 120 can be made of silicon crystal, carbon crystal or tempered glass. A support can be provided on the bottom shell, and copper wire is wound on the support to form each coil unit 210.

[0025] The control module 500 may include a processor such as an MCU or CPU and its auxiliary circuits. There may be multiple pot detection modules 400, each of which detects each coil unit 210 individually. Alternatively, there may be only one pot detection module 400. Each pot detection module 400 is connected to a different drive branch. The control module 500 controls the operation of each drive branch one by one. Based on the resonant frequency fed back by the pot detection module 400 during the operation of each drive branch, it can be determined whether the coil unit 210 of that drive branch is covered by the pot body.

[0026] This utility model relates to an adaptive linkage induction cooker. The user can place the pot on the support panel 120. During the initial operation of the induction cooker, the control module 500 can sequentially control the activation of each switch drive unit. The power modulation module 300 supplies power to the activated drive branches. The pot detection module 400 can collect the resonant frequency of the drive branch during operation. If the coil unit 210 corresponding to the drive branch is covered by the pot, the resonant frequency is lower; if the coil unit 210 is not covered by the pot, the resonant frequency is higher. This method allows the system to determine which coil units 210 are covered by the pot. The control module 500 then controls the drive branches corresponding to the coil units 210 covered by the pot to activate, thus achieving relatively accurate control of the coil units 210 coupling heat to the pot. Furthermore, no additional sensors are needed to detect the pot's placement and coverage. This design is simple and compact, reducing manufacturing and maintenance costs, and ensuring stable and reliable operation.

[0027] In some embodiments of this utility model, the switch driving unit includes a semiconductor switch device 220 and a relay assembly 230. The relay assembly 230 includes a relay coil and a relay switch. The relay switch is connected to the coil unit 210 to form at least a partial drive branch. The switch device 220 is connected to the relay coil to form at least a partial control branch. The control branch is connected to a power supply. The control module 500 is connected to the controlled terminal of the switch device 220 to control the on / off state of the switch device 220.

[0028] There can be multiple coil units 210, and each coil unit 210 corresponds one-to-one with a switch driving unit, such as... Figure 9As shown, each switch component 220 may include switch transistor Q203, switch transistor Q204, etc. When the control module 500 controls the switch component 220 to close, the current flows through the control branch and the relay coil. The relay coil can attract the relay switch, so that the drive branch is turned on. The power modulation module 300 provides power to the coil unit 210 through the drive branch.

[0029] In some embodiments of this utility model, such as Figure 4 As shown, the pot detection module 400 includes a first frequency sampling unit 410 and a second frequency sampling unit 420. The sampling end of the first frequency sampling unit 410 is connected to the beginning end of each driving branch, and the sampling end of the second frequency sampling unit 420 is connected to the end end of each driving branch. The output ends of the first frequency sampling unit 410 and the second frequency sampling unit 420 are both connected to the control module 500.

[0030] The control module 500 can collect the resonant frequency before and after passing through the electromagnetic module through the first frequency sampling unit 410 and the second frequency sampling unit 420. When the pot is placed on the coil unit 210, the coupling inductance of the coil unit 210 increases, and the resonant frequency decreases accordingly.

[0031] Specifically, the first frequency sampling unit 410 includes a resistor R37, a resistor R14, and a capacitor C8. The first end of the resistor R37 is connected to the first end of each driving branch, and the last end of the resistor R37 is connected to the first end of the resistor R14, the first end of the capacitor C8, and the control module 500, respectively. The last end of the capacitor C8 and the last end of the resistor R14 are grounded.

[0032] The second frequency sampling unit 420 includes resistor R38, resistor R16 and capacitor C9. The first end of resistor R38 is connected to the last end of each driving branch. The last end of resistor R38 is connected to the first end of resistor R16, the first end of capacitor C9 and control module 500 respectively. The last end of capacitor C9 is connected to the first end of resistor R14. The last end of resistor R16 is grounded.

[0033] In some embodiments of this utility model, such as Figure 2 As shown, the coil unit 210 is strip-shaped, and multiple coil units 210 are arranged side by side. For example, from a top view, the coil unit 210 can be rectangular. By arranging multiple coil units 210 side by side, more areas can be covered tightly. Specifically, the coil unit 210 can also be circular or elliptical to adapt to the shape of a conventional pot.

[0034] In some embodiments of this utility model, the power modulation module 300 includes a rectifier unit 310 and a power modulation unit 320. The input terminal of the rectifier unit 310 is connected to the power supply, the output terminal of the rectifier unit 310 is connected to the beginning of each of the drive branches, the power modulation unit 320 is connected to the end of each of the drive branches, and the control module 500 is connected to the controlled terminal of the power modulation unit 320 to modulate the operating power of the coil unit 210.

[0035] like Figure 4 As shown, the rectifier unit 310 can be selected from a conventional full-wave rectifier bridge or a half-wave rectifier bridge. The power modulation module 300 also includes an inductor L1 and a capacitor CX2. The first end of the inductor L1 is connected to the output end of the rectifier unit 310, and the last end of the inductor L1 is connected to the first end of each of the driving branches and the first end of the capacitor CX2. The last end of the capacitor CX2 is grounded.

[0036] The power modulation unit 320 includes IGBT1, Q1, Q2, Q3, resistors R6, R7, R8, R9, and diode D3. The input terminal of IGBT1 is connected to the tail end of the drive branch. The controlled terminal of IGBT1 is connected to the beginning of resistors R6 and R7, respectively. The tail end of resistor R7 is connected to the anode of diode D3, the output terminal of switch Q1, and the input terminal of switch Q3, respectively. The controlled terminal of switch Q1 is connected to the controlled terminal of switch Q3, resistors R6 and R7, respectively. The first end of R9 is connected to the input end of the switching transistor Q2. The controlled end of the switching transistor Q2 is connected to the first end of the resistor R8 and the control module 500. The output ends of the switching transistor IGBT1, the last end of the resistor R6, the output ends of the switching transistor Q3 and the output ends of the switching transistor Q2 are all grounded. The negative terminal of the diode D3, the input end of the switching transistor Q1, the last end of the resistor R8 and the last end of the resistor R9 are all connected to the power supply. The switching transistors Q1 and Q3 have opposite polarities to form a push-pull circuit. For example, the switching transistor Q1 is an N-type transistor and the switching transistor Q3 is a P-type transistor.

[0037] In some embodiments of this utility model, such as Figure 5 As shown, the adaptive linkage induction cooker also includes a cooktop temperature detection module 600, which is used to detect the cooktop temperature of the support panel 120. The cooktop temperature detection module 600 is connected to the control module 500.

[0038] The furnace surface temperature detection module 600 may include a temperature sensor, resistors R31 and R28, and capacitor C25. The temperature sensor can be installed near the support panel 120 and close to the surface of the support panel 120 to collect the temperature of the support panel 120. The power supply powers one pole of the temperature sensor, and the other pole of the temperature sensor is connected to the first end of resistor R28, the first end of capacitor C25, and the first end of resistor R31. The last end of resistor R31 is connected to the control module 500, and the last end of capacitor C25 and the last end of resistor R28 are connected.

[0039] The control module 500 can control the power modulation module 300 to change the operating power applied to the coil unit 210 according to the temperature of the furnace surface, so that the heating temperature of the pot body meets the user's needs.

[0040] In some embodiments of this utility model, such as Figure 6 As shown, the adaptive linkage induction cooker also includes a drive temperature detection module 700, which is used to detect the drive temperature of the power modulation module 300. The drive temperature detection module 700 is connected to the control module 500.

[0041] The driving temperature detection module 700 may include a thermistor RT1, a resistor R27, and a capacitor C24. The first end of the resistor R27 is connected to the power supply, and the second end of the resistor R27 is connected to the first end of the thermistor RT1, the first end of the capacitor C24, and the control module 500, respectively. The second end of the thermistor RT1 and the second end of the capacitor C24 are both grounded.

[0042] When the driving temperature is high, the control module 500 can control the power modulation module 300 to stop supplying power to the electromagnetic module to prevent the electrical components from overheating and burning out.

[0043] In some embodiments of this utility model, the adaptive linkage induction cooker further includes a fan drive module 800. A fan is provided inside the housing 100, and the housing 100 is provided with a vent 130 communicating with the inner cavity. The fan drive module 800 is connected to the fan to form at least a part of the fan control branch. The fan control branch is used to connect to the power supply. The control module 500 is connected to the controlled end of the fan drive module 800.

[0044] The fan drive module 800 may include a switching transistor Q4, which is connected to the fan to form a fan control branch. When the switching transistor Q4 is closed, the power supply supplies power to the fan through the fan control branch, thereby dissipating heat from the electrical components in the cavity.

[0045] 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.

[0046] Although embodiments of the present 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 present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adaptive linkage induction cooker, characterized in that, include: The shell has an inner cavity, and a support panel is provided at the top of the inner cavity for placing the pot body; An electromagnetic module is disposed in the housing and located in the inner cavity. The electromagnetic module includes a plurality of coil units arranged horizontally along the support panel and a plurality of switch driving units. The switch driving units and the coil units are connected to form at least a portion of the driving branches, and the plurality of driving branches are connected in parallel. A power modulation module, wherein the input terminal of the power modulation module is used to connect to the power supply, and the output terminal of the power modulation module is respectively connected to each of the drive branches to supply power; The pot detection module is connected to the electromagnetic module to collect the resonant frequency of the electromagnetic module during operation; The control module is connected to the controlled terminals of the pot detection module and each of the switch driving units, and the control module can control the on / off state of each of the switch driving units.

2. The adaptive linkage induction cooker according to claim 1, characterized in that: The switch driving unit includes a semiconductor switching device and a relay assembly. The relay assembly includes a relay coil and a relay switch. The relay switch is connected to the coil unit to form at least a partial drive branch. The switching device is connected to the relay coil to form at least a partial control branch. The control branch is connected to a power supply. The control module is connected to the controlled terminal of the switching device to control the switching on and off of the switching device.

3. The adaptive linkage induction cooker according to claim 1, characterized in that: The pot detection module includes a first frequency sampling unit and a second frequency sampling unit. The sampling end of the first frequency sampling unit is connected to the beginning of each drive branch, and the sampling end of the second frequency sampling unit is connected to the end of each drive branch. The output ends of the first frequency sampling unit and the second frequency sampling unit are both connected to the control module.

4. The adaptive linkage induction cooker according to claim 3, characterized in that: The first frequency sampling unit includes resistor R37, resistor R14, and capacitor C8. The first end of resistor R37 is connected to the first end of each driving branch, and the last end of resistor R37 is connected to the first end of resistor R14, the first end of capacitor C8, and the control module, respectively. The last end of capacitor C8 and the last end of resistor R14 are grounded.

5. The adaptive linkage induction cooker according to claim 1, characterized in that: The coil unit is strip-shaped, and multiple coil units are arranged side by side.

6. The adaptive linkage induction cooker according to claim 1, characterized in that: The power modulation module includes a rectifier unit and a power modulation unit. The input terminal of the rectifier unit is connected to the power supply, the output terminal of the rectifier unit is connected to the beginning of each of the drive branches, the power modulation unit is connected to the end of each of the drive branches, and the control module is connected to the controlled terminal of the power modulation unit to modulate the operating power of the coil unit.

7. An adaptive linkage induction cooker according to claim 6, characterized in that: The power modulation unit includes IGBT1, Q1, Q2, Q3, resistors R6, R7, R8, R9, and diode D3. The input terminal of IGBT1 is connected to the tail end of the drive branch. The controlled terminal of IGBT1 is connected to the beginning of resistors R6 and R7. The tail end of resistor R7 is connected to the positive terminal of diode D3, the output terminal of switch Q1, and the input terminal of switch Q3. The controlled terminal of switch Q1 is connected to the controlled terminal of switch Q3, the beginning of resistor R9, and the input terminal of switch Q2. The controlled terminal of switch Q2 is connected to the beginning of resistor R8 and the control module. The output terminals of IGBT1, R6, Q3, and Q2 are all grounded. The negative terminal of diode D3, the input terminal of switch Q1, the tail end of resistor R8, and the tail end of resistor R9 are all connected to the power supply.

8. An adaptive linkage induction cooker according to claim 1, characterized in that: It also includes a furnace surface temperature detection module, which is used to detect the furnace surface temperature of the supporting panel, and the furnace surface temperature detection module is connected to the control module.

9. An adaptive linkage induction cooker according to claim 1, characterized in that: It also includes a drive temperature detection module, which is used to detect the drive temperature of the power modulation module, and the drive temperature detection module is connected to the control module.

10. An adaptive linkage induction cooker according to claim 9, characterized in that: It also includes a fan drive module, a fan is provided inside the housing, the housing is provided with a ventilation port communicating with the inner cavity, the fan drive module is connected to the fan to form at least part of the fan control branch, the fan control branch is used to connect to the power supply, and the control module is connected to the controlled end of the fan drive module.

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