Detection device for detecting electromagnetic heating cooking utensil

Abstract

The utility model discloses a detection device for detecting an electromagnetic heating cooking utensil. The detection device comprises a power detection module and a simulation container module. The power detection module is used for detecting the working power of the electromagnetic heating cooking utensil. The power detection module comprises a power supply interface and a first AC interface. The power interface is used for connecting commercial power alternating current. The first alternating current interface is electrically connected with the power interface and used for providing an alternating current power supply for the electromagnetic heating cooking utensil during detection. The simulation container module is used for sensing a magnetic field generated by an electromagnetic coil of an electromagnetic heating device of the electromagnetic heating cooking utensil during detection and heating to simulate a cooking container. The simulation container module comprises a simulation inductor and a simulation resistor. The analog inductor is used for inducing a magnetic field generated by an electromagnetic coil of an electromagnetic heating device of the electromagnetic heating cooking utensil during detection. The analog resistor and the analog inductor are connected end to end to form a closed circuit.

Description

Technical Field

[0001] The present application relates to the technical field of detection equipment, and in particular to a detection device for detecting electromagnetic heating cooking utensils. Background Art

[0002] Electromagnetic heating cooking appliances need to be tested before leaving the factory to verify whether the electromagnetic heating device (circuit) can work properly. According to the principle of electromagnetic heating cooking appliances, the electromagnetic heating device needs to be involved in the inner pot when working, and in order to prevent the inner pot from drying out, water needs to be added to the inner pot. After the water boils, the test is ended. This requires the production line workshop to solve the problem of water for testing, and add processes such as filling water for testing and cleaning the inner pot after testing. There is also the risk of the inner pot being scrapped (for example, an unqualified electromagnetic heating device causes a qualified inner pot to be scrapped), which increases costs.

[0003] Therefore, a detection device for detecting electromagnetic heating cooking appliances is needed to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the present application provides a detection device for detecting electromagnetic heating cooking utensils, which includes a power detection module and a simulation container module, wherein:

[0006] The power detection module is used to detect the working power of the electromagnetic heating cooking appliance, and the power detection module includes:

[0007] Power interface, used to connect to AC mains, and

[0008] A first AC interface, electrically connected to the power interface, for providing AC power to the electromagnetic heating cooking appliance during detection;

[0009] The simulated container module is used to sense the magnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking utensil during detection and generate heat to simulate a cooking container. The simulated container module includes:

[0010] a simulated inductor for sensing the magnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking utensil during detection, and

[0011] The simulated resistor is connected end to end with the simulated inductor to form a closed path.

[0012] According to the present application, during the detection, the power detection module of the detection device supplies power to the electromagnetic heating cooking utensil, so that the power detection module can detect the power of the electromagnetic heating cooking utensil. After the electromagnetic heating cooking utensil is working, the electromagnetic coil of its electromagnetic heating device generates an oscillating magnetic field. Under the action of electromagnetic induction, an induced electromotive force is generated at both ends of the simulated inductor. Since it forms a closed loop with the simulated resistor, an induced current is generated in the closed loop, and heat is generated when the induced current flows through the simulated resistor. Therefore, the present application makes the closed loop formed by connecting the inductor and the resistor in series equivalent to a real cooking container (for example, a pot). During the actual detection, only the closed loop is placed in the pot body, that is, the entire control system is set to simulate the actual working process of the cooking utensil according to the preset detection method. This detection process avoids the use of a cooking container filled with water, and also saves the step of wiping the residual water in the cooking container after the test. The application of this technical solution does not require water, reduces labor, and reduces the occurrence of cooking container scrapping caused by the existing testing method, and indirectly reduces the occupation of workshop production line space by the existing practice.

[0013] Optionally, the power detection module includes:

[0014] A current detection circuit is connected in series between the power interface and the first AC interface, and is used to detect the working current of the electromagnetic heating cooking appliance; and

[0015] A voltage detection circuit is connected in parallel with the first AC interface and is used to detect the working voltage of the electromagnetic heating cooking appliance.

[0016] According to the present application, the power detection module detects power by respectively detecting the operating voltage and the operating current.

[0017] Optionally, the current detection circuit includes a current transformer, and a primary coil of the current transformer is connected in series between the power interface and the first AC interface.

[0018] According to the present application, the current detection circuit is reasonably designed and has stable performance.

[0019] Optionally, the simulated container module further includes a detection adjustment mechanism for adjusting the distance between the simulated inductor and the electromagnetic coil.

[0020] According to the present application, the detection device can adjust the working power of the electromagnetic heating cooking appliance. The present application realizes power adjustment by adjusting the distance between the simulated inductor and the electromagnetic coil. When the simulated inductor is far away from the electromagnetic coil, the electromagnetic induction effect between the simulated inductor and the electromagnetic coil is weak, the induced current in the equivalent cooking container is small, and the power of the electromagnetic heating device is low. When the simulated inductor is close to the electromagnetic coil, the electromagnetic induction effect between the simulated inductor and the electromagnetic coil is strong, the induced current in the equivalent cooking container is large, and the power of the electromagnetic heating device is high.

[0021] Optionally, the detection and adjustment mechanism includes:

[0022] A first bracket, used to form a stable support during detection and keep a relative position unchanged with the electromagnetic coil; and

[0023] The second bracket is connected to the first bracket and is movable relative to the first bracket, and the simulated inductor is connected to the second bracket so that the distance between the simulated inductor and the electromagnetic coil can be changed.

[0024] According to the present application, the method of changing the distance between the simulated inductor and the electromagnetic coil is simple.

[0025] Optionally,

[0026] The analog resistor is arranged on the second bracket,

[0027] The simulated container module also includes a heat sink, which is disposed on the second bracket and is electrically connected to the power detection module for cooling the simulated resistor.

[0028] According to the present application, the heat dissipation device can cool the analog resistor to ensure the safety of the detection device.

[0029] Optionally, the heat dissipation device is a fan.

[0030] According to the present application, the heat dissipation device has simple control, low cost and stable performance.

[0031] Optionally, the power detection module further includes a heat sink switch circuit, and the heat sink switch circuit is connected to the heat sink.

[0032] According to the present application, the heat sink is powered by a power detection module.

[0033] Optionally, the heat dissipation device switching circuit includes a first transistor, the base of the first transistor is connected to the control component, the emitter of the first transistor is grounded, and the heat dissipation device is connected between the positive pole of the DC power supply of the power detection module and the collector of the first transistor.

[0034] According to the present application, the switching circuit of the heat dissipation device is simple to control and has stable performance.

[0035] Optionally, the simulated container module further includes an isolation plate, which is disposed on the second bracket and is used to be located between the simulated inductor and the electromagnetic coil during detection, and the isolation plate is made of non-magnetic material.

[0036] further,

[0037] The isolation plate is made of plastic or resin material, and / or

[0038] The thickness of the isolation plate is 8 mm to 10 mm.

[0039] According to the present application, the isolation plate forms a magnetic gap between the equivalent cooking container and the electromagnetic coil to better generate electromagnetic induction, which is also closer to the actual user usage environment.

[0040] Optionally, the detection adjustment mechanism also includes a position adjustment drive component, which is arranged on the first bracket and connected to the second bracket, and is used to drive the second bracket to move relative to the first bracket, wherein the position adjustment drive component is electrically connected to the power detection module.

[0041] According to the present application, the distance between the simulated inductor and the electromagnetic coil is automatically adjusted by the position adjustment driving component.

[0042] Further, the position adjustment drive assembly includes:

[0043] a driving component, disposed on the first bracket and electrically connected to the power detection module, for providing a driving force to move the second bracket; and

[0044] A transmission assembly connects the driving component and the second bracket. The transmission assembly is movable relative to the first bracket under the drive of the driving component to drive the second bracket to move relative to the first bracket.

[0045] further,

[0046] The driving component is a motor, and / or

[0047] The transmission assembly includes a pulley.

[0048] According to the present application, the position adjustment drive assembly has a compact structure, simple control and stable performance.

[0049] Optionally, the power detection module further includes a position adjustment drive switch circuit, and the position adjustment drive switch circuit is electrically connected to the drive component.

[0050] According to the present application, the position adjustment drive component is powered by a power detection module.

[0051] Optionally, the position adjustment drive switch circuit includes a second transistor, the base of the second transistor is connected to the control component, the emitter of the second transistor is grounded, wherein the drive component is connected between the positive pole of the DC power supply of the power detection module and the collector of the second transistor.

[0052] According to the present application, the position adjustment drive switch circuit has simple control and stable performance.

[0053] Optionally, the power detection module further includes a display component for displaying the working power of the electromagnetic heating cooking appliance.

[0054] According to this application, the detection device can display the test power value to improve the user experience.

[0055] Optionally, the power detection module further includes a button for user operation, and the button is electrically connected to the position adjustment drive switch circuit.

[0056] According to the present application, the user can flexibly adjust the power of the electromagnetic heating cooking appliance.

[0057] Optionally, the detection device is configured such that the second bracket can move up and down relative to the first bracket during detection.

[0058] According to the present application, the detection device can detect the performance of the bottom electromagnetic heating device.

[0059] Optionally, the detection device is configured such that during detection, the simulated resistor is located above the simulated inductor.

[0060] According to the present application, the position of the simulated resistor does not hinder the electromagnetic induction effect between the simulated inductor and the electromagnetic coil of the electromagnetic heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The following drawings of the present application are used as a part of the present application for understanding the present application. The drawings show representative embodiments of the present application and are used to explain the principle of the present application, rather than to limit the present application.

[0062] In the attached figure:

[0063] Figure 1 An exemplary schematic diagram of an electromagnetic heating cooking appliance;

[0064] Figure 2 A schematic diagram of a simulation container module of a detection device for detecting electromagnetic heating cooking utensils and a method of using the same according to a specific embodiment of the present application;

[0065] Figure 3 It is a schematic diagram of the appearance of a power detection module of a detection device for detecting electromagnetic heating cooking appliances according to a specific embodiment of the present application;

[0066] Figure 4 The present invention is a circuit diagram of a power detection module of a detection device for detecting electromagnetic heating cooking appliances according to a specific embodiment of the present application.

[0067] Description of reference numerals:

[0068] 10: Claypot

[0069] 11: Accommodation cavity

[0070] 20: Cover

[0071] 30: Simulation container module

[0072] 31: Analog resistor

[0073] 32: Simulated inductor

[0074] 33: Isolation board

[0075] 35: Heat dissipation device

[0076] 40: Detection and adjustment mechanism

[0077] 41: First bracket

[0078] 42: Second bracket

[0079] 43: Position adjustment drive assembly

[0080] 44: Driving components

[0081] 45: Transmission components

[0082] 46: Pulley

[0083] 47: Cable

[0084] 49: Bracket

[0085] 50: Power detection module

[0086] 51: Button

[0087] 52: Shell

[0088] 53: First button

[0089] 54: Second button

[0090] 55: Display components

[0091] 56: Control components

[0092] 57: Power interface

[0093] 58: First AC interface

[0094] 59: AC bus

[0095] 61: Current detection circuit

[0096] 62: Voltage detection circuit

[0097] 63: Heat sink switch circuit

[0098] 64: Position adjustment drive switch circuit

[0099] 100: Induction heating cooking appliances

[0100] 101: Solenoid coil DETAILED DESCRIPTION

[0101] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0102] In order to thoroughly understand the present application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0103] Ordinal numbers such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". The use of the words "first", "second", and "third" does not indicate any order, and these words can be interpreted as names.

[0104] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0105] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0106] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0107] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0108] The present application provides a detection device (hereinafter referred to as the detection device) for detecting an electromagnetic heating cooking appliance and a matching detection method. The detection device and the detection method according to the present application are used to detect whether the electromagnetic heating cooking appliance can work normally. Specifically, the detection device and the detection method are used to detect whether the electromagnetic heating device of the electromagnetic heating cooking appliance can work normally.

[0109] The electromagnetic heating cooking appliance 100 may be Figure 1 The electromagnetic heating rice cooker shown. The electromagnetic heating rice cooker includes a cover 20 and a pot body 10. The cover 20 is connected to the top of the pot body 10 in an openable and closable manner, and is used to cover the pot body 10. For example, the cover 20 is pivotally connected to the pot body 10. The pot body 10 can be configured as a rounded rectangular parallelepiped shape or any other suitable shape. The pot body 10 is provided with a accommodating cavity 11, and a cooking container (such as a pot core) is removably arranged in the accommodating cavity 11. The cooking container is used to hold the ingredients required for cooking, and a cooking space is formed therein.

[0110] The electromagnetic heating cooking appliance 100 can of course also be other types of cooking appliances, such as an electric pressure cooker, an electric stew pot, an electric hot pot, an electric frying pan or a deep fryer, an induction cooker, etc. Figure 2 As shown, the electromagnetic heating cooking utensil 100 uses the principle of electromagnetic induction heating to cook food, and its electromagnetic heating device uses an electromagnetic oscillation circuit composed of an electromagnetic coil 101 (inductor) and a capacitor. Usually, the electromagnetic heating cooking utensil 100 will have a cooking container made of ferromagnetic material. When in use, the cooking container is placed close to the electromagnetic coil 101, so that the oscillating magnetic field of the electromagnetic coil 101 can be induced. Based on the principle of electromagnetic induction, the oscillating magnetic field causes eddy currents to be generated inside the ferromagnetic material of the cooking container (that is, the outer wall of the cooking container), and the eddy currents act on the resistance of the ferromagnetic material to generate heat. Figure 2 As shown, the electromagnetic heating cooking utensil 100 generally has a bottom electromagnetic heating device, which includes a bottom electromagnetic coil, and is used to act on the cooking container at the bottom of the cooking container. The electromagnetic heating cooking utensil 100 can also be provided with a side heating device, a top heating device, etc. according to specific circumstances to form a three-dimensional heating of the cooking space. It can be understood that each electromagnetic heating device has its own electromagnetic coil 101, and the electromagnetic heating device acts on the cooking container through the electromagnetic coil 101.

[0111] like Figure 2 and Figure 3As shown, in a specific embodiment, the detection device according to the present application includes a simulated container module 30 and a power detection module 50. The two modules can be packaged separately and then connected by a cable, or can also be connected by wireless communication.

[0112] Among them, the simulation container module 30 is used to simulate the cooking container during detection. For example, during detection, the simulation container module 30 can sense the electromagnetic field generated by the electromagnetic coil 101 of the electromagnetic heating device of the electromagnetic heating cooking utensil 100 and generate heat, thereby simulating the situation of the cooking container when the electromagnetic heating cooking utensil 100 is working. That is, during detection, the simulation container module 30 is located at a position where the electromagnetic field generated by the electromagnetic coil 101 can be sensed. In other words, the simulation container module 30 provides a fake cooking container equivalent to a real cooking container. The simulation container module 30 may include a bracket 49, a simulated inductor 32 and a simulated resistor 31. Among them, the bracket 49 is used to form a stable support during detection. The simulated inductor 32 is set on the bracket 49, and is used to sense the electromagnetic field generated by the electromagnetic coil 101 during detection. The simulated resistor 31 is also set on the bracket, which is connected end to end with the simulated inductor 32 (the two ends of the simulated inductor 32 are respectively connected to the two ends of the simulated resistor 31) to form a closed path.

[0113] When the electromagnetic coil 101 generates an oscillating magnetic field, an induced electromotive force is generated at both ends of the simulated inductor 32 under the action of electromagnetic induction. Since it forms a closed loop with the simulated resistor 31, an induced current is generated in the closed loop, and heat is generated when the induced current flows through the simulated resistor 31. Therefore, the present application equates the real cooking container to a closed loop formed by connecting the inductor and the resistor in series, and uses an equivalent cooking container during detection, so that the detection process completely avoids the steps of using a cooking container, filling the cooking container with water, and wiping the cooking container after the test, reducing the cost of water, labor, and scrapping of cooking containers, as well as the space occupied by the workshop production line.

[0114] exist Figure 2 In the illustrated embodiment, the equivalent cooking container composed of the simulated resistor 31 and the simulated inductor 32 can be placed in the accommodating cavity 11 , so that the simulated inductor 32 induces the electromagnetic field of the electromagnetic coil 101 .

[0115] Preferably, the simulated inductor 32 is spaced a certain distance from the simulated resistor 31, for example, not less than 1 cm, to prevent the high temperature of the simulated resistor 31 from burning the simulated inductor 32. Since the current on the simulated resistor 31 is relatively large, a heat-resistant high-power cement resistor may be preferred. When the detection device is used to detect the bottom electromagnetic heating device, preferably, the simulated resistor 31 is located above the simulated inductor 32, so as not to affect the magnetic field lines of the electromagnetic coil 101 passing through the simulated inductor 32. In other words, during detection, the simulated inductor 32 is located between the simulated resistor 31 and the electromagnetic coil 101. In other words, during detection, the simulated inductor 32 is closer to the electromagnetic coil 101 than the simulated resistor 31.

[0116] Preferably, the simulated container module 30 also includes an isolation plate 33, which is made of a non-magnetic material (such as plastic, resin, such as bakelite). The isolation plate 33 is arranged on the bracket 49 and can be used to support the simulated inductor 32 and / or the simulated resistor 31. For example, the isolation plate 33 can support the simulated inductor 32 below the simulated inductor 32. During detection, the isolation plate 33 is located between the simulated inductor 32 and the electromagnetic coil 101. Thereby, the isolation plate 33 forms a magnetic gap between the equivalent cooking container and the electromagnetic coil 101 to better generate electromagnetic induction and is closer to the actual user usage environment. The thickness of the isolation plate 33 is, for example, 8 to 10 mm.

[0117] Preferably, the simulated container module 30 further includes a heat sink 35. The heat sink 35 is disposed on the bracket 49 and is used to cool the simulated resistor 31. The heat sink 35 is, for example, placed above the simulated resistor 31 and closer to the simulated resistor 31 than the simulated inductor 32. The heat sink 35 is, for example, configured as a fan.

[0118] like Figure 3 and Figure 4 As shown, the power detection module 50 is used to detect the working power of the electromagnetic heating cooking appliance 100 (that is, the power of the electromagnetic heating device) during the test. When the power detection module 50 can detect the working power of the electromagnetic heating cooking appliance 100, it means that the performance of the electromagnetic heating cooking appliance 100 is normal, otherwise it means that the electromagnetic heating cooking appliance 100 has a fault.

[0119] The power detection module 50, for example, includes a power interface 57 and a first AC interface 58. The power interface 57 is used to connect to AC mains power. The first AC interface 58 is electrically connected to the power interface 57, and is used to provide AC power to the electromagnetic heating cooking utensil 100 during detection, that is, connected to the power interface of the electromagnetic heating cooking utensil 100. Thus, during the test, the power detection module 50 is plugged into the mains, and the electromagnetic heating cooking utensil 100 being detected is plugged into the power detection module 50 and powered by the power detection module 50. With the support of the AC power provided by the power detection module 50, an oscillating magnetic field is generated in the electromagnetic coil 101. The power detection module 50 can also power the simulation container module 30 (for example, the heat sink 35).

[0120] The power detection module 50 also includes a current detection circuit 61, a voltage detection circuit 62 and a control component 56. The current detection circuit 61 is connected in series between the power interface 57 and the first AC interface 58, so that the working current of the electromagnetic heating cooking utensil 100 flows through the current detection circuit 61, so as to detect the working current of the electromagnetic heating cooking utensil 100 (that is, the working current of the electromagnetic heating device) during the test. The voltage detection circuit 62 is connected in parallel with the first AC interface 58, so that the voltage detection circuit 62 is directly connected in parallel with the power interface of the electromagnetic heating cooking utensil 100, so as to detect the working voltage of the electromagnetic heating cooking utensil 100 (that is, the working voltage of the electromagnetic heating device) during the test. The control component 56 is, for example, an MCU chip, which is electrically connected to the current detection circuit 61 to analyze the working current of the electromagnetic heating cooking utensil 100, and is also electrically connected to the voltage detection circuit 62 to analyze the working voltage of the electromagnetic heating cooking utensil 100. Afterwards, the control component 56 calculates the working power of the electromagnetic heating cooking utensil 100 according to the working current and working voltage of the electromagnetic heating cooking utensil 100. For example, the operating power of the electromagnetic heating cooking appliance 100 is obtained by multiplying the operating current and the operating voltage of the electromagnetic heating cooking appliance 100 .

[0121] It is understandable that the electromagnetic heating device is an important component of the electromagnetic heating cooking utensil 100, and the performance of the electromagnetic heating cooking utensil 100 is mainly to detect the performance of its electromagnetic heating device. The present application detects the performance of the electromagnetic heating device by making it work. It is understandable that when the control component 56 of the power detection module 50 can detect and analyze the working power of the electromagnetic heating cooking utensil 100, it means that the performance of the electromagnetic heating cooking utensil 100 is normal, that is, the performance of its electromagnetic heating device is normal. When the control component 56 of the power detection module 50 cannot detect and analyze the working power of the electromagnetic heating cooking utensil 100, it means that at least one of the working voltage and working current of the electromagnetic heating cooking utensil 100 is abnormal, and the electromagnetic heating cooking utensil 100 cannot work normally and has abnormal performance. The power detection module 50 can inform the user of the detection results in various forms. Of course, the power detection module 50 can also detect the working power of the electromagnetic heating cooking utensil 100 in other ways.

[0122] The current detection circuit includes, for example, a current transformer CTM, a rectifier bridge DB, a first resistor R1, a second resistor R2, a third resistor R3 and a first capacitor C1.

[0123] The primary coil of the current transformer CTM is connected in series to the AC bus 59. The primary coil of the current transformer CTM, the power interface 37 and the first AC interface 58 are all connected in series to the AC bus 59. The primary coil of the current transformer CTM is connected in series between the power interface 57 and the first AC interface 58. Thus, the current flowing through the primary coil of the current transformer CTM is the working current of the electromagnetic heating cooking utensil 100. The secondary coil of the current transformer CTM is electrically connected to the control component 56. The output of the secondary coil of the current transformer CTM is rectified into direct current by the rectifier bridge DB. The output end of the rectifier bridge DB is connected in parallel to two branches, wherein the first branch includes a first resistor R1, and the second branch includes a second resistor R2 and a third resistor R3 connected in series. The two branches are shunted according to their respective resistance values. The second resistor R2 and the third resistor R3 form a resistor voltage divider circuit, and the common end of the two is connected to the control component 56 (for example, the A / D input pin of the MCU chip). The control component 56 can calculate the current value of the second branch by sampling the voltage value of the common terminal, and then can infer the current value of the primary coil of the current transformer CTM according to the parameters of each component, that is, the working current value of the electromagnetic heating cooking appliance 100. The first capacitor C1 is connected in parallel with the third resistor to form a filter circuit to eliminate interference noise in the circuit and make the detection result more accurate.

[0124] The voltage detection circuit 62 includes, for example, a first diode D1, a second diode D2, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a second capacitor C2. The first diode D1 and the second diode D2 are connected to the first AC interface 58, so that the voltage output of the AC power in the positive half cycle and the negative half cycle can be derived. In other words, the first diode D1 and the second diode D2 convert the bidirectional AC voltage into a unidirectional DC voltage. The DC voltage is collected by the control component 56 after being divided by the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6. The control component 56 can reversely deduce the AC voltage value at the first AC interface 58, that is, the working voltage value of the electromagnetic heating cooking utensil 100, based on the collected voltage value and the parameters of each component. The second capacitor C2 is also a filter capacitor, which has a similar function to the first capacitor C1.

[0125] The power detection module 50 further includes a display component 55, which is electrically connected to the control component 56 and is used to display the working power of the electromagnetic heating cooking appliance 100. The display component 55 can also be used to display the detection result of the detection device of the present application.

[0126] Generally, the electromagnetic heating cooking utensil 100 can work at the rated power (or the preset maximum power) for a preset time as the standard for its performance to meet the standard. In order to enable the electromagnetic heating cooking utensil 100 (that is, its electromagnetic heating device) to work at the rated power, the detection device of the present application has a power adjustment function to be suitable for electromagnetic heating cooking utensil with different rated powers. Specifically, the present application realizes power adjustment by adjusting the distance between the simulated inductor 32 and the electromagnetic coil 101. When the simulated inductor 32 is far away from the electromagnetic coil 101, the electromagnetic induction effect between the simulated inductor 32 and the electromagnetic coil 101 is weak, the induced current in the equivalent cooking container is small, and the power of the electromagnetic heating device is low. When the simulated inductor 32 is close to the electromagnetic coil 101, the electromagnetic induction effect between the simulated inductor 32 and the electromagnetic coil 101 is strong, the induced current in the equivalent cooking container is large, and the power of the electromagnetic heating device is high.

[0127] Specifically, the simulated container module 30 further includes a detection adjustment mechanism 40, and the detection adjustment mechanism 40 is used to adjust the distance between the simulated inductor 32 and the electromagnetic coil 101. The bracket 49 is a part of the detection adjustment mechanism 40.

[0128] For example, Figure 2As shown, the bracket 49 includes a first bracket 41 and a second bracket 42. The first bracket 41 is used to form a stable support during detection and keep the relative position with the electromagnetic coil 101 unchanged. The first bracket 41 can be set at the opening of the accommodating cavity 11, for example. According to the specific function and structure of the electromagnetic heating cooking utensil 100, the first bracket 41 can be flexibly set. The second bracket 42 is connected to the first bracket 41. The simulated inductor 32 is set in the second bracket 42. The second bracket 42 is movable relative to the first bracket 41, thereby driving the simulated inductor 32 to move to change the distance between the simulated inductor 32 and the electromagnetic coil 101. Generally, the bottom electromagnetic heating device is the most important heating component, so the detection device of the present application mainly detects the performance of the bottom electromagnetic heating device. In order to adapt to this, preferably, the detection device is constructed so that the second bracket 42 can move up and down relative to the first bracket 41 during detection.

[0129] Preferably, the isolation plate 33 is also disposed on the second bracket 42 to move synchronously with the inductor 32, thereby stably supporting the simulated inductor 32. Preferably, the simulated resistor 31 is also disposed on the second bracket 42, thereby being stably connected to the simulated inductor 32. Preferably, the heat sink 35 is also disposed on the second bracket 42, thereby being stably acting on the simulated resistor 31.

[0130] The second bracket 42 is preferably made of heat-resistant material and has a certain strength.

[0131] In order to make the second bracket 42 movable, the detection adjustment mechanism 40 further includes a position adjustment driving component 43. The position adjustment driving component 43 is disposed on the first bracket 41 and connected to the second bracket 42, and is used to drive the second bracket 42 to move relative to the first bracket 41. The position adjustment driving component 43 is electrically connected to the power detection module 50, so as to be powered and controlled by the power detection module 50.

[0132] Specifically, the position adjustment drive assembly 43 may include a drive component 44 and a transmission assembly 45. The drive component 44 is disposed on the first bracket 41 and is electrically connected to the power detection module 50, and is used to provide a driving force to move the second bracket 42. The transmission assembly 45 connects the drive component 44 and the second bracket 42. The transmission assembly 45 is movable relative to the first bracket 41 under the drive of the drive component 44, so as to drive the second bracket 42 to move relative to the first bracket 41.

[0133] For example, the driving component 44 is configured as a motor, and the motor 44 is electrically connected to the control component 56 to work under the control of the control component 56. The transmission assembly 45 includes a pulley 46 and a cable 47. The pulley 46 is connected to the output shaft of the motor 44, for example, through a gear, a chain, etc., to rotate under the drive of the motor 44. One end of the cable 47 is wound around the pulley 46, and the other end is connected to the second bracket 42. When the pulley 46 rotates, the pulley 46 winds the cable 47, or releases the cable 47, so that the second bracket 42 is pulled and moved by the cable 47. Preferably, the simulated container module 30 includes a plurality of transmission assemblies 45 to stably pull the second bracket 42.

[0134] like Figure 4 As shown, the power detection module 50 also includes a position adjustment drive switch circuit 64. The position adjustment drive switch circuit 64 is connected between the control component 56 and the drive component 44, wherein the control component 56 is used to control the on and off of the position adjustment drive switch circuit 64. When the position adjustment drive switch circuit 64 is turned on, the power detection module 50 supplies power to the drive component 44 so that the second bracket 42 can move relative to the first bracket 41. When the position adjustment drive switch circuit 64 is turned off, the drive component 44 is disconnected from the power supply so that the second bracket 42 cannot move.

[0135] For example, the position adjustment drive switch circuit 64 includes a fourth diode D4, a fourth capacitor C4, a second transistor Q2, a ninth resistor R9 and a tenth resistor R10. The second transistor Q2 is an NPN transistor, whose base is connected to the control component 56 and whose emitter is grounded. The drive component 44 is connected between the positive electrode VDD of the DC power supply of the power detection module 50 and the collector of the second transistor Q2. For example, a second terminal XH2 is provided between the positive electrode VDD and the collector of the second transistor Q2, and the second terminal XH2 can be connected to the power interface of the motor 44 through a wire. When the second bracket 42 needs to move, the control component 56 outputs a high level at the base of the second transistor Q2, the second transistor Q2 is turned on (that is, the position adjustment drive switch circuit 64 is turned on), and the current flows from the positive electrode VDD of the power supply to the collector of the second transistor Q2, so that the motor 44 works, thereby changing the distance between the equivalent cooking container and the electromagnetic coil 101. The control component 56 calculates the power of the electromagnetic heating cooking appliance 100 at any time. When the power reaches the preset rated power, the control component 56 outputs a low level at the base of the second transistor Q2, the second transistor Q2 is turned off (that is, the position adjustment drive switch circuit 64 is turned off), the collector of the second transistor Q2 has no current, the motor 44 cannot work, and the second bracket 42 cannot move. Thus, the simulated inductor 32 and the electromagnetic coil 101 maintain a stable position relationship, and the electromagnetic heating device works with stable power.

[0136] The position adjustment drive switch circuit 64 is equivalent to the switch of the motor 44. The control component 56 also controls the rotation direction of the motor 44 through the steering control circuit (not shown), thereby bidirectionally adjusting the moving direction of the second bracket 42, that is, bidirectionally adjusting the power of the electromagnetic heating device.

[0137] It is understandable that after the detection process starts, the position of the second bracket 42 may not correspond to the position of the rated power of the electromagnetic heating cooking appliance 100. The power detection module 50 also includes a button 51 for user operation. When the user sees the power value displayed by the display component 55, he can know whether the current power is the rated power. The button 51 is electrically connected to the control component 56, and the user increases or decreases the actual working power by operating the button 51. For example, when the button 51 is operated by the user in a first manner, the control component 56 controls the driving component 44 to work so that the second bracket 42 moves relative to the first bracket 41 along a first direction (e.g., downward) (e.g., increasing the actual working power); when the button 51 is operated by the user in a second manner, the control component 56 controls the driving component 44 to work so that the second bracket 42 moves relative to the first bracket 41 along a second direction (e.g., downward) (e.g., reducing the actual working power). The second direction is opposite to the first direction.

[0138] For example, the button 51 may include a first button 53 and a second button 54, both of which are used for user operation to issue instructions for reducing power and increasing power, respectively. When the user operates the first button 53, the button 51 is operated in a first manner. The control component 56 receives a signal and controls the steering control circuit and the position adjustment drive switch circuit 64 to work. The position adjustment drive switch circuit 64 is turned on, and the steering control circuit controls the steering of the motor 44 so that the second bracket 42 moves in the first direction. When the user operates the second button 54, the button 51 is operated in a second manner. The control component 56 receives a signal and controls the steering control circuit and the position adjustment drive switch circuit 64 to work. The position adjustment drive switch circuit 64 is turned on, and the steering control circuit controls the steering of the motor 44 so that the second bracket 42 moves in the second direction.

[0139] The first button 53 and the second button 54 are configured to have an on state and an off state, for example, they are configured as long-press buttons. When the user presses the button, the button is turned on, the motor 44 works accordingly, the second bracket 42 moves, and the working power changes; when the user releases the button (for example, the button is released when the working power has reached or is close to the rated power), the button is turned off, the motor 44 is powered off, the second bracket 42 remains in position, and the working power remains stable.

[0140] After the user adjusts the working power through the button 51, the electromagnetic heating cooking appliance 100 is operated at the rated power for a preset detection time. If the power of the electromagnetic heating cooking appliance 100 is stable and does not show any abnormality during the preset detection time, the performance of the electromagnetic heating cooking appliance 100 is qualified. If the power of the electromagnetic heating cooking appliance 100 is unstable or shows other abnormalities during the preset detection time, the performance of the electromagnetic heating cooking appliance 100 is unqualified.

[0141] Of course, the user can also set the rated power of the electromagnetic heating cooking appliance 100 in advance in the control component 56, so that the above-mentioned manual power adjustment process can be automatically implemented by the control component 56. For example, when the control component 56 finds that the actual power is less than the rated power, it automatically sends a high level to the base of the second triode Q2 and at the same time, for example, makes the motor 44 rotate forward to reduce the distance between the simulated inductor 32 and the electromagnetic coil 101. When the control component 56 finds that the actual power is greater than the rated power, it automatically sends a high level to the base of the second triode Q2 and at the same time, for example, makes the motor 44 reverse to increase the distance between the simulated inductor 32 and the electromagnetic coil 101. For example, a step-by-step movement method can be adopted, and the second bracket 42 is only moved a short distance each time until the actual power reaches the rated power. In addition, the closer the actual power is to the rated power, the smaller the moving distance is, so that precise control can be achieved.

[0142] like Figure 4 As shown, the power detection module 50 also includes a heat sink switch circuit 63. The heat sink switch circuit 63 is connected between the control component 56 and the heat sink 35. The control component 56 is used to control the on and off of the heat sink switch circuit 63. When the heat sink switch circuit 63 is turned on, the power detection module 50 supplies power to the heat sink 35 to enable the heat sink to work; when the heat sink switch circuit 63 is turned off, the heat sink 35 is disconnected from the power supply, so that the heat sink 35 cannot work.

[0143] Specifically, the heat sink switch circuit 63 includes a third diode D3, a third capacitor C3, a first transistor Q1, a seventh resistor R7 and an eighth resistor R8. The first transistor Q1 is an NPN transistor, whose base is connected to the control component 56, and whose emitter is grounded. The heat sink 35 is connected between the positive electrode VDD of the DC power supply of the power detection module 50 and the collector of the first transistor Q1. For example, a first terminal XH1 is provided between the positive electrode VDD and the collector of the first transistor Q1, and the first terminal XH1 can be connected to the power interface of the heat sink 35 through an electric wire. When the control component 56 outputs a high level at the base, the first transistor Q1 is turned on (that is, the heat sink switch circuit 63 is turned on), and the current flows from the positive electrode VDD of the power supply to the collector of the first transistor Q1, and the heat sink 35 works. When the control component 56 outputs a low level at the base, the first transistor Q1 is turned off (that is, the heat sink switch circuit 63 is turned off), the collector of the first transistor Q1 has no current, and the heat sink 35 does not work. Therefore, the heat sink switch circuit 63 is equivalent to the switch of the heat sink 35. In the entire detection process, the heat sink 35 is preferably always working.

[0144] The method of converting AC power of the power detection module 50 into low-voltage DC power is a conventional technology in the art and will not be described in detail here.

[0145] The embodiment illustrated in the present application is an example of detecting the electromagnetic heating device at the bottom, but according to the present application, the detection device can also be used to detect the performance of the electromagnetic heating device at the side. For example, the simulated inductor 32 is changed to have the axial direction vertical, so that the simulated inductor 32 can well sense the electromagnetic field of the electromagnetic coil at the side. The closer the simulated inductor 32 is to the middle of the accommodating cavity 11 of the pot body 10, the smaller the induced current therein (the smaller the power), and the closer the simulated inductor 32 is to the side wall of the accommodating cavity 11 of the pot body 10, the larger the induced current therein (the larger the power). When the electromagnetic heating cooking utensil 100 has multiple electromagnetic heating devices (for example, both a bottom electromagnetic heating device and a side electromagnetic heating device), according to the placement of the equivalent cooking container (especially the simulated inductor 32), it is determined which electromagnetic heating device's electromagnetic coil 101 it acts on, so as to detect the performance (for example, working power) of which electromagnetic heating device.

[0146] Figure 4 The circuit shown can be enclosed in a housing 52 (eg Figure 3 As shown), the power detection module 50 is an integral device. The housing 52 is reserved for holes for the display component 55, the button 51 and other required interfaces. Similarly, Figure 2 The simulated container module 30 shown can also be encapsulated in a shell to form an integrated device, which is more convenient to use and can also protect the various components of the simulated container module 30.

[0147] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0148] In understanding the scope of the present application, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0149] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0150] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present application. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0151] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application.

Claims

1. A detection device for detecting electromagnetic heating cooking utensils, characterized in that: It includes a power detection module and a simulation container module, wherein: The power detection module is used to detect the working power of the electromagnetic heating cooking appliance, and the power detection module includes: Power interface, used to connect to AC mains, and A first AC interface, electrically connected to the power interface, for providing AC power to the electromagnetic heating cooking appliance during detection; The simulated container module is used to sense the magnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking utensil during detection and generate heat to simulate a cooking container. The simulated container module includes: a simulated inductor for sensing the magnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking utensil during detection, and The simulated resistor is connected end to end with the simulated inductor to form a closed path.

2. The detection device according to claim 1, characterized in that: The power detection module comprises: A current detection circuit is connected in series between the power interface and the first AC interface, and is used to detect the working current of the electromagnetic heating cooking appliance; and A voltage detection circuit is connected in parallel with the first AC interface and is used to detect the working voltage of the electromagnetic heating cooking appliance.

3. The detection device according to claim 2, characterized in that: The current detection circuit includes a current transformer, and a primary coil of the current transformer is connected in series between the power interface and the first AC interface.

4. The detection device according to any one of claims 1 to 3, characterized in that: The simulated container module also includes a detection adjustment mechanism for adjusting the distance between the simulated inductor and the electromagnetic coil.

5. The detection device according to claim 4, characterized in that: The detection and adjustment mechanism comprises: A first bracket, used to form a stable support and keep a constant position relative to the electromagnetic coil during detection; and The second bracket is connected to the first bracket and is movable relative to the first bracket, and the simulated inductor is connected to the second bracket so that the distance between the simulated inductor and the electromagnetic coil can be changed.

6. The detection device according to claim 5, characterized in that: The analog resistor is arranged on the second bracket, The simulated container module also includes a heat sink, which is disposed on the second bracket and is electrically connected to the power detection module for cooling the simulated resistor.

7. The detection device according to claim 6, characterized in that: The heat dissipation device is a fan.

8. The detection device according to claim 6, characterized in that: The power detection module also includes a heat sink switch circuit, and the heat sink switch circuit is connected to the heat sink.

9. The detection device according to claim 8, characterized in that: The heat dissipation device switching circuit includes a first transistor, the base of the first transistor is connected to the control component, the emitter of the first transistor is grounded, and the heat dissipation device is connected between the positive pole of the DC power supply of the power detection module and the collector of the first transistor.

10. The detection device according to claim 5, characterized in that: The simulated container module also includes an isolation plate, which is arranged on the second bracket and is used to be located between the simulated inductor and the electromagnetic coil during detection. The isolation plate is made of non-magnetic material.

11. The detection device according to claim 10, characterized in that: The isolation plate is made of plastic or resin material, and / or The thickness of the isolation plate is 8 mm to 10 mm.

12. The detection device according to claim 5, characterized in that: The detection adjustment mechanism also includes a position adjustment drive component, which is disposed on the first bracket and connected to the second bracket, and is used to drive the second bracket to move relative to the first bracket, wherein the position adjustment drive component is electrically connected to the power detection module.

13. The detection device according to claim 12, characterized in that: The position adjustment drive assembly comprises: a driving component, disposed on the first bracket and electrically connected to the power detection module, for providing a driving force to move the second bracket; and A transmission assembly connects the driving component and the second bracket. The transmission assembly is movable relative to the first bracket under the drive of the driving component to drive the second bracket to move relative to the first bracket.

14. The detection device according to claim 13, characterized in that: The driving component is a motor, and / or The transmission assembly includes a pulley.

15. The detection device according to claim 13, characterized in that: The power detection module also includes a position adjustment drive switch circuit, and the position adjustment drive switch circuit is electrically connected to the drive component.

16. The detection device according to claim 15, characterized in that: The position adjustment drive switch circuit includes a second transistor, the base of the second transistor is connected to the control component, the emitter of the second transistor is grounded, wherein the drive component is connected between the positive pole of the DC power supply of the power detection module and the collector of the second transistor.

17. The detection device according to claim 15, characterized in that: The power detection module also includes a display component for displaying the working power of the electromagnetic heating cooking appliance.

18. The detection device according to claim 17, characterized in that: The power detection module also includes a button for user operation, and the button is electrically connected to the position adjustment drive switch circuit.

19. The detection device according to claim 5, characterized in that: The detection device is configured such that the second bracket can move up and down relative to the first bracket during detection.

20. The detection device according to claim 19, characterized in that: The detection device is configured such that during detection, the simulated resistor is located above the simulated inductor.

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