Detection device and detection method for detecting electromagnetic heating cooking utensil
By combining the power detection module and the simulated container module, the working process of electromagnetic heating cooking appliances is simulated, which solves the problems of water usage and inner pot scrapping in the testing of electromagnetic heating cooking appliances, and achieves efficient and low-cost testing.
Patent Information
- Application Number
- CN202410605578.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-11-18
AI Technical Summary
Existing electromagnetic heating cooking appliances require water for factory testing, which leads to the risk of the inner pot burning dry, increases testing procedures and costs, and also poses the risk of the inner pot becoming unusable.
By employing a power detection module and a simulated container module, a closed loop is formed by simulating inductance and resistance to simulate the working process of a cooking container, thereby detecting the power of the electromagnetic heating device and avoiding the use of water and cleaning steps.
It reduced the costs of testing water, labor, and scrapped inner pots, reduced the space occupied by the workshop production line, and simplified the testing process.
Smart Images
Figure CN120971805A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing equipment technology, and more specifically to a testing device and testing method for testing electromagnetic heating cooking appliances. Background Technology
[0002] Electromagnetic heating cooking appliances undergo operational testing before leaving the factory to verify that the electromagnetic heating device (circuit) functions properly. Based on the operating principle of electromagnetic heating cooking appliances, an inner pot is required for the electromagnetic heating device to operate. Furthermore, to prevent the inner pot from drying out, water needs to be added to it, and the test ends after the water boils. This necessitates the production line workshop resolving the issue of testing water, and adds processes such as filling the pot with water for testing and cleaning the inner pot afterward. There is also a risk of the inner pot being scrapped (e.g., a defective electromagnetic heating device causing a qualified inner pot to be scrapped), increasing costs.
[0003] Therefore, a detection device is needed for testing electromagnetic heating cooking appliances to at least partially solve the above problems. Summary of the Invention
[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0005] To at least partially solve the above problems, the first aspect of this application provides a detection device for detecting electromagnetic heating cooking appliances, comprising a power detection module and a simulated container module, wherein,
[0006] The power detection module is used to detect the operating power of the electromagnetic heating cooking appliance, and the power detection module includes:
[0007] The power interface is used to connect to AC mains power and...
[0008] The first AC interface is electrically connected to the power interface and is used to provide AC power to the electromagnetic heating cooking appliance during testing.
[0009] The simulated container module is used to sense the electromagnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking appliance during detection and to generate heat to simulate a cooking container. The simulated container module includes:
[0010] The support is used to provide stable support during testing.
[0011] A simulated inductor, disposed on the bracket, is used to sense the electromagnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking appliance during detection.
[0012] An analog resistor is disposed on the bracket and connected end-to-end with the analog inductor to form a closed circuit.
[0013] The simulated inductor and the simulated resistor are spaced a certain distance apart.
[0014] According to this application, during testing, the power detection module of the testing device supplies power to the electromagnetic heating cooking appliance, thereby enabling the power detection module to detect the power of the electromagnetic heating cooking appliance. After the electromagnetic heating cooking appliance is in operation, 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 across the simulated inductor. Since it forms a closed loop with the simulated resistor, an induced current is generated in this closed loop, and heat is generated when the induced current flows through the simulated resistor. Thus, this application equates the closed loop formed by the series connection of the inductor and resistor to a real cooking container (e.g., the inner pot). In actual testing, only the closed loop is placed inside the pot, and the entire system simulates the actual working process of the cooking appliance according to the preset testing method. This testing process avoids the use of a cooking container filled with water and also eliminates the step of wiping the residual water inside the cooking container after testing. The application of this technical solution eliminates the need for water, reduces labor, reduces the scrapping of cooking containers caused by existing testing methods, and indirectly reduces the space occupied by existing practices in the workshop production line.
[0015] Optionally, the power detection module further includes:
[0016] A current detection circuit is connected in series between the power interface and the first AC interface to detect the operating current of the electromagnetic heating cooking appliance.
[0017] A voltage detection circuit, connected in parallel with the first AC interface, is used to detect the operating voltage of the electromagnetic heating cooking appliance; and
[0018] A control unit is electrically connected to the current detection circuit to analyze the operating current and to the voltage detection circuit to analyze the operating voltage. The control unit calculates the operating power of the electromagnetic heating cooking appliance based on the operating current and the operating voltage.
[0019] According to this application, the power detection module detects power by detecting the operating voltage and operating current respectively.
[0020] Optionally, the current detection circuit includes a current transformer, the primary coil of which is connected in series between the power interface and the first AC interface, and the secondary coil of which is electrically connected to the control component.
[0021] According to this application, the current detection circuit is reasonably designed and has stable performance.
[0022] Optionally, the simulated container module further includes a detection and adjustment mechanism for adjusting the distance between the simulated inductor and the electromagnetic coil.
[0023] According to this application, the detection device can adjust the operating power of an electromagnetic heating cooking appliance. This application achieves power adjustment by regulating the distance between a simulated inductor and an electromagnetic coil. When the simulated inductor is far from the electromagnetic coil, the electromagnetic induction between them is weak, resulting in a smaller induced current in the equivalent cooking container and lower power for the electromagnetic heating device. When the simulated inductor is close to the electromagnetic coil, the electromagnetic induction between them is strong, leading to a larger induced current in the equivalent cooking container and higher power for the electromagnetic heating device.
[0024] Optionally, the detection adjustment mechanism includes the bracket, the bracket comprising:
[0025] The first support is used to provide stable support during detection and maintain a constant relative position with the electromagnetic coil; and
[0026] A second bracket is connected to the first bracket and movable relative to the first bracket, and the analog inductor is connected to the second bracket so that the distance between the analog inductor and the electromagnetic coil can be changed.
[0027] According to this application, the method for changing the distance between the analog inductor and the electromagnetic coil is simple.
[0028] Optionally, the detection and adjustment mechanism further includes:
[0029] A drive component, disposed on the first bracket and electrically connected to the control component to operate under the control of the control component, the drive component being used to provide a driving force for moving the second bracket relative to the first bracket; and
[0030] A transmission assembly connects the drive component and the second bracket. The transmission assembly is movable relative to the first bracket under the drive of the drive component, so as to drive the second bracket to move relative to the first bracket.
[0031] further,
[0032] The drive component is configured as a motor, which is electrically connected to the control component to operate under the control of the control component;
[0033] The transmission assembly includes:
[0034] A pulley, connected to the motor, rotates under the drive of the motor, and
[0035] A cable, one end of which is wound around the pulley, and the other end of which is connected to the second bracket.
[0036] According to this application, the drive component and transmission assembly have a compact structure, simple control, and stable performance.
[0037] Optionally, the power detection module further includes a position adjustment drive switch circuit, which is connected between the control component and the drive component, wherein the control component controls the on / off state of the position adjustment drive switch circuit.
[0038] When the position adjustment drive switch circuit is turned on, the power detection module supplies power to the drive component, causing the second bracket to move relative to the first bracket.
[0039] When the position adjustment drive switch circuit is turned off, the drive component is disconnected from the power supply, so that the second bracket cannot be moved.
[0040] According to this application, the drive component operates under the control of the control component.
[0041] Optionally, the position adjustment drive switch circuit includes a second transistor, the base of which is connected to the control component, the emitter of which is grounded, and the drive component is connected between the positive terminal of the DC power supply of the power detection module and the collector of the second transistor.
[0042] According to this application, the position adjustment drive switch circuit is simple to control and has stable performance.
[0043] Optionally, the power detection module further includes a display component, which is electrically connected to the control component and is used to display the working power of the electromagnetic heating cooking appliance.
[0044] According to this application, the testing device can display the test power value, thereby improving the user experience.
[0045] further,
[0046] The power detection module also includes buttons for user operation, and the buttons are electrically connected to the control component.
[0047] The detection device is configured such that when the button is operated by a user in a first manner, the control component controls the drive component to operate, causing the second bracket to move relative to the first bracket along a first direction.
[0048] The detection device is further configured such that when the button is operated by a user in a second manner, the control component controls the drive component to operate, so that the second bracket moves relative to the first bracket in a second direction, wherein the second direction is opposite to the first direction.
[0049] According to this application, users can flexibly adjust the power of electromagnetic heating cooking appliances.
[0050] Optionally, the detection device is configured such that the second support can move up and down relative to the first support during detection.
[0051] According to this application, the testing device can test the performance of the bottom electromagnetic heating device.
[0052] Optionally, the detection device is configured such that the analog resistor is located above the analog inductor during detection.
[0053] According to this application, the position of the analog resistor does not impede the electromagnetic induction between the analog inductor and the electromagnetic coil of the electromagnetic heating device.
[0054] Optionally, the simulated container module further includes a heat dissipation device disposed on the bracket and electrically connected to the control component for cooling the simulated resistor.
[0055] According to this application, the heat dissipation device can cool the analog resistor to ensure the safety of the detection device.
[0056] Optionally, the heat dissipation device is configured as a fan.
[0057] According to this application, the heat dissipation device is simple to control, inexpensive, and has stable performance.
[0058] Optionally,
[0059] The power detection module also includes a heat dissipation device switching circuit, which is connected between the control component and the heat dissipation device. The control component controls the on / off state of the heat dissipation device switching circuit.
[0060] When the switching circuit of the heat dissipation device is turned on, the power detection module supplies power to the heat dissipation device to enable it to operate.
[0061] When the switching circuit of the heat dissipation device is turned off, the heat dissipation device is disconnected from the power supply, so that the heat dissipation device cannot work.
[0062] According to this application, the heat dissipation device operates under the control of the control component.
[0063] 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 terminal of the DC power supply of the power detection module and the collector of the first transistor.
[0064] According to this application, the switching circuit of the heat dissipation device is simple to control and has stable performance.
[0065] Optionally, the simulated container module further includes an isolation plate disposed on the support and used to be positioned between the simulated inductor and the electromagnetic coil during testing. The isolation plate is made of a non-magnetic material.
[0066] further,
[0067] The partition is made of plastic or resin material, and / or
[0068] The thickness of the isolation plate is 8mm to 10mm.
[0069] According to this application, the partition plate creates a magnetic gap between the equivalent cooking container and the electromagnetic coil to better induce electromagnetic induction, and is closer to the actual user environment.
[0070] Optionally, the resistor is a cement resistor.
[0071] According to this application, cement resistors have the characteristics of shock resistance, moisture resistance, heat resistance, good heat dissipation, and low price, which are beneficial to the stable performance of the testing device, cost saving, and long service life.
[0072] A second aspect of this application provides a detection method for detecting electromagnetic heating cooking appliances, comprising:
[0073] A power detection module is provided to detect the working power of the electromagnetic heating cooking appliance and to supply power to the electromagnetic heating cooking appliance during detection.
[0074] A simulated container module is provided for sensing the electromagnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking appliance during detection and generating heat to simulate a cooking container;
[0075] The simulated container module is placed at a location where the electromagnetic field can be sensed, and the electromagnetic heating cooking appliance is powered on. When the power detection module detects that the electromagnetic heating cooking appliance has power output, it is determined that the electromagnetic heating cooking appliance is functioning normally. When the power detection module does not detect that the electromagnetic heating cooking appliance has power output, it is determined that the electromagnetic heating cooking appliance is functioning abnormally.
[0076] According to this application, by using a simulated container module to simulate a cooking container, the use of a real cooking container for testing can be avoided. The testing process completely avoids the steps of filling the cooking container with water and wiping the cooking container after the test, reducing the costs of water, labor, and cooking container scrapping, as well as the space occupied on the workshop production line.
[0077] Optionally, the detection method further includes: changing the distance between the simulated container module and the electromagnetic coil to change the operating power of the electromagnetic heating cooking appliance.
[0078] According to this application, it is possible to test the performance of cooking appliances under different power levels. Attached Figure Description
[0079] The following drawings, which are incorporated herein by reference as part of this application, are provided for understanding the application. The drawings illustrate representative embodiments of the application and are used to explain the principles of the application, not to limit it.
[0080] In the attached image:
[0081] Figure 1 This is an exemplary schematic diagram of an electromagnetic heating cooking appliance;
[0082] Figure 2 This is a schematic diagram of a simulated container module and its usage method of a detection device for detecting electromagnetic heating cooking appliances according to a specific embodiment of this application;
[0083] Figure 3 This is a schematic diagram of the appearance of the power detection module of the detection device for detecting electromagnetic heating cooking appliances according to a specific embodiment of this application;
[0084] Figure 4 This is a circuit diagram of the power detection module of a detection device for detecting electromagnetic heating cooking appliances according to a specific embodiment of this application.
[0085] Explanation of reference numerals in the attached figures:
[0086] 10: Claypot
[0087] 11: Receiving cavity
[0088] 20: Cover
[0089] 30: Simulated Container Module
[0090] 31: Analog Resistor
[0091] 32: Simulated Inductor
[0092] 33: Isolation plate
[0093] 35: Heat dissipation device
[0094] 40: Testing and Adjustment Agency
[0095] 41: First stent
[0096] 42: Second stent
[0097] 43: Position Adjustment Drive Component
[0098] 44: Drive components
[0099] 45: Transmission components
[0100] 46: Pulley
[0101] 47: Cable
[0102] 49: Bracket
[0103] 50: Power Detection Module
[0104] 51: Button
[0105] 52: Shell
[0106] 53: First button
[0107] 54: Second button
[0108] 55: Display component
[0109] 56: Control components
[0110] 57: Power Interface
[0111] 58: First Communication Interface
[0112] 59: AC bus
[0113] 61: Current detection circuit
[0114] 62: Voltage detection circuit
[0115] 63: Heat dissipation device switching circuit
[0116] 64: Position adjustment drive switch circuit
[0117] 100: Electromagnetic heating cooking appliances
[0118] 101: Electromagnetic coil Detailed Implementation
[0119] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.
[0120] To fully understand this application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other embodiments.
[0121] The ordinal numbers such as “first” and “second” used in this application are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term “first component” does not imply the existence of a “second component,” and the term “second component” does not imply the existence of a “first component.” The use of words such as “first,” “second,” and “third” does not indicate any order and can be interpreted as names.
[0122] It should be noted that the terms “upper,” “lower,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.
[0123] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.
[0124] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.
[0125] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings.
[0126] This application provides a testing device (hereinafter referred to as the testing device) and a matching testing method for testing electromagnetic heating cooking appliances. The testing device and method according to this application are used to test whether an electromagnetic heating cooking appliance can function normally. Specifically, the testing device and method are used to test whether the electromagnetic heating device of the electromagnetic heating cooking appliance can function normally.
[0127] Electromagnetic heating cooking appliance 100 can be as follows Figure 1The electromagnetic heating rice cooker shown includes a lid 20 and a pot body 10. The lid 20 is closably connected above the pot body 10 for closing the pot body 10. For example, the lid 20 is pivotally connected to the pot body 10. The pot body 10 can be constructed in a rounded cuboid shape or any other suitable shape. The pot body 10 is provided with a receiving cavity 11 in which a cooking container (e.g., the inner pot) is removably disposed. The cooking container is used to hold the ingredients required for cooking, and its interior forms a cooking space.
[0128] Electromagnetic heating cooking appliances 100 can also be other types of cooking appliances, such as electric pressure cookers, electric slow cookers, electric hot pots, electric frying pans or deep fryers, induction cookers, etc. For example... Figure 2 As shown, the electromagnetic heating cooking appliance 100 cooks food using the principle of electromagnetic induction heating. Its electromagnetic heating device employs an electromagnetic oscillation circuit composed of an electromagnetic coil 101 (inductor) and a capacitor. Typically, the electromagnetic heating cooking appliance 100 has a cooking container made of a ferromagnetic material. During use, the cooking container is placed close to the electromagnetic coil 101, thereby inducing the oscillating magnetic field of the coil 101. Based on the principle of electromagnetic induction, the oscillating magnetic field generates eddy currents inside the ferromagnetic material of the cooking container (i.e., the outer wall of the cooking container). These eddy currents act on the resistance of the ferromagnetic material, generating heat. Figure 2 As shown, the electromagnetic heating cooking appliance 100 typically has a bottom electromagnetic heating device, which includes a bottom electromagnetic coil for acting on the cooking container from the bottom. The electromagnetic heating cooking appliance 100 may also be equipped with side heating devices, top heating devices, etc., to create three-dimensional heating of the cooking space. It is 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.
[0129] like Figure 2 and Figure 3 As shown, in a specific embodiment, the detection device according to this application includes a simulated container module 30 and a power detection module 50. The two modules can be separately packaged and then connected via a cable, or they can be connected wirelessly.
[0130] The simulated container module 30 is used to simulate a cooking container during testing. For example, during testing, the simulated container module 30 can sense the electromagnetic field generated by the electromagnetic coil 101 of the electromagnetic heating device of the electromagnetic heating cooking appliance 100 and generate heat, thereby simulating the cooking of a container when the electromagnetic heating cooking appliance 100 is working. That is, during testing, the simulated container module 30 is located at a position where it can sense the electromagnetic field generated by the electromagnetic coil 101. In other words, the simulated container module 30 provides a fake cooking container equivalent to a real cooking container. The simulated container module 30 may include a support 49, a simulated inductor 32, and a simulated resistor 31. The support 49 is used to form a stable support during testing. The simulated inductor 32 is disposed on the support 49 and is used to sense the electromagnetic field generated by the electromagnetic coil 101 during testing. The simulated resistor 31 is also disposed on the support, and it 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 circuit.
[0131] When the electromagnetic coil 101 generates an oscillating magnetic field, an induced electromotive force is generated across the simulated inductor 32 under electromagnetic induction. Since it forms a closed loop with the simulated resistor 31, an induced current is generated in this closed loop. The induced current generates heat when it flows through the simulated resistor 31. Thus, this application equates a real cooking container to a closed loop formed by an inductor and a resistor connected in series. By using an equivalent cooking container during testing, the testing process completely avoids the steps of using a cooking container, filling it with water, and wiping the cooking container after testing. This reduces the costs of water, labor, and discarded cooking containers, as well as the space occupied on the production line.
[0132] exist Figure 2 In the embodiment shown, the equivalent cooking container composed of analog resistor 31 and analog inductor 32 can be placed in the receiving cavity 11 so that analog inductor 32 can sense the electromagnetic field of electromagnetic coil 101.
[0133] Preferably, the simulated inductor 32 and the simulated resistor 31 are spaced a certain distance apart, for example, not less than 1 cm, to prevent the simulated inductor 32 from being burned out by the high temperature of the simulated resistor 31. Since the current through the simulated resistor 31 is relatively large, a heat-resistant, high-power cement resistor is 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. Or, during detection, the simulated inductor 32 is closer to the electromagnetic coil 101 than the simulated resistor 31.
[0134] Preferably, the simulated container module 30 further includes an isolation plate 33, which is made of a non-magnetic material (e.g., plastic, resin, such as bakelite). The isolation plate 33 is mounted on the support 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 from below. During testing, the isolation plate 33 is positioned between the simulated inductor 32 and the electromagnetic coil 101. Thus, the isolation plate 33 creates a magnetic gap between the equivalent cooking container and the electromagnetic coil 101, resulting in better electromagnetic induction and more closely resembling the actual user environment. The thickness of the isolation plate 33 is, for example, 8–10 mm.
[0135] Preferably, the analog container module 30 further includes a heat dissipation device 35. The heat dissipation device 35 is disposed on the bracket 49 and is used to cool the analog resistor 31. The heat dissipation device 35 is positioned, for example, above the analog resistor 31, closer to the analog resistor 31 than the analog inductor 32. The heat dissipation device 35 is configured, for example, as a fan.
[0136] like Figure 3 and Figure 4 As shown, the power detection module 50 is used to detect the operating power (i.e., the power of the electromagnetic heating device) of the electromagnetic heating cooking appliance 100 during testing. When the power detection module 50 can detect the operating power of the electromagnetic heating cooking appliance 100, it indicates that the electromagnetic heating cooking appliance 100 is functioning normally; otherwise, it indicates that the electromagnetic heating cooking appliance 100 is faulty.
[0137] The power detection module 50 includes, for example, 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 appliance 100 during testing; that is, it is connected to the power interface of the electromagnetic heating cooking appliance 100. Thus, during testing, the power detection module 50 is plugged into AC mains power, and the electromagnetic heating cooking appliance 100 under test is plugged into the power detection module 50 and powered by it. 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 simulated container module 30 (e.g., the heat sink 35).
[0138] The power detection module 50 also includes a current detection circuit 61, a voltage detection circuit 62, and a control unit 56. The current detection circuit 61 is connected in series between the power interface 57 and the first AC interface 58, allowing the operating current of the electromagnetic heating cooking appliance 100 to flow through it for detecting the operating current (i.e., the operating current of the electromagnetic heating device) of the electromagnetic heating cooking appliance 100 during testing. The voltage detection circuit 62 is connected in parallel with the first AC interface 58, directly in parallel with the power interface of the electromagnetic heating cooking appliance 100, for detecting the operating voltage (i.e., the operating voltage of the electromagnetic heating device) of the electromagnetic heating cooking appliance 100 during testing. The control unit 56, for example, is an MCU chip, electrically connected to the current detection circuit 61 to analyze the operating current of the electromagnetic heating cooking appliance 100, and also electrically connected to the voltage detection circuit 62 to analyze the operating voltage of the electromagnetic heating cooking appliance 100. Then, the control unit 56 calculates the operating power of the electromagnetic heating cooking appliance 100 based on the operating current and operating voltage of the electromagnetic heating cooking appliance 100. For example, the operating power of the electromagnetic heating cooking appliance 100 can be obtained by multiplying its operating current and operating voltage.
[0139] Understandably, the electromagnetic heating device is a crucial component of the electromagnetic heating cooking appliance 100, and testing the performance of the electromagnetic heating cooking appliance 100 primarily aims to test the performance of its electromagnetic heating device. This application tests its performance by operating the electromagnetic heating device. Understandably, when the control component 56 of the power detection module 50 can detect and analyze the operating power of the electromagnetic heating cooking appliance 100, it indicates that the electromagnetic heating cooking appliance 100 is functioning normally, meaning its electromagnetic heating device is operating normally. When the control component 56 of the power detection module 50 cannot detect and analyze the operating power of the electromagnetic heating cooking appliance 100, it indicates that at least one of the operating voltage and operating current of the electromagnetic heating cooking appliance 100 is abnormal, and the electromagnetic heating cooking appliance 100 cannot operate normally, exhibiting abnormal performance. The power detection module 50 can inform the user of the test results in various ways. Of course, the power detection module 50 can also detect the operating power of the electromagnetic heating cooking appliance 100 through other methods.
[0140] 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.
[0141] The primary coil of the current transformer CTM is connected in series on the AC bus 59. The primary coil of the current transformer CTM, power interface 37, and first AC interface 58 are all connected in series on the AC bus 59. The primary coil of the current transformer CTM is connected in series between power interface 57 and first AC interface 58. Therefore, the current flowing through the primary coil of the current transformer CTM is the operating current of the electromagnetic heating cooking appliance 100. The secondary coil of the current transformer CTM is electrically connected to the control unit 56. The output of the secondary coil of the current transformer CTM is rectified into DC current by the rectifier bridge DB. Two branches are connected in parallel at the output of the rectifier bridge DB. 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 divided according to their respective resistance values. The second resistor R2 and the third resistor R3 form a resistor divider circuit, and their common terminal is connected to the control unit 56 (e.g., the A / D input pin of the MCU chip). The control unit 56 can calculate the current value of the second branch by sampling the voltage value of the common terminal. Then, it can deduce the current value of the primary coil of the current transformer CTM, which is the operating current value of the electromagnetic heating cooking appliance 100, based on the parameters of each component. 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 results more accurate.
[0142] 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, allowing the AC voltage output to be derived during both the positive and negative half-cycles. Alternatively, the first diode D1 and the second diode D2 convert the bidirectional AC voltage into a unidirectional DC voltage. The DC voltage is then divided by the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 and acquired by the control unit 56. Based on the acquired voltage value and the parameters of each component, the control unit 56 can deduce the AC voltage value at the first AC interface 58, which is also the operating voltage value of the electromagnetic heating cooking appliance 100. The second capacitor C2 is also a filter capacitor, functioning similarly to the first capacitor C1.
[0143] The power detection module 50 also includes a display component 55, which is electrically connected to the control component 56 and is used to display the operating power of the electromagnetic heating cooking appliance 100. The display component 55 can also be used to display the detection results of the detection device of this application.
[0144] Typically, the performance standard for an electromagnetic heating cooking appliance 100 is defined as its ability to operate at its rated power (or preset maximum power) for a preset duration. To ensure that the electromagnetic heating cooking appliance 100 (i.e., its electromagnetic heating device) operates at its rated power, the detection device of this application has a power adjustment function to accommodate electromagnetic heating cooking appliances with different rated power. Specifically, this application achieves power adjustment by adjusting the distance between the simulated inductor 32 and the electromagnetic coil 101. When the simulated inductor 32 is farther from the electromagnetic coil 101, the electromagnetic induction between them is weaker, resulting in a smaller induced current in the equivalent cooking container and a lower power for the electromagnetic heating device. When the simulated inductor 32 is closer to the electromagnetic coil 101, the electromagnetic induction between them is stronger, resulting in a larger induced current in the equivalent cooking container and a higher power for the electromagnetic heating device.
[0145] Specifically, the analog container module 30 also includes a detection and adjustment mechanism 40, which is used to adjust the distance between the analog inductor 32 and the electromagnetic coil 101. The bracket 49 is part of the detection and adjustment mechanism 40.
[0146] For example, such as Figure 2 As shown, the support 49 includes a first support 41 and a second support 42. The first support 41 provides stable support during testing and maintains a constant relative position with the electromagnetic coil 101. The first support 41 can be mounted, for example, at the opening of the receiving cavity 11. The first support 41 can be flexibly configured according to the specific function and structure of the electromagnetic heating cooking appliance 100. The second support 42 is connected to the first support 41. An analog inductor 32 is disposed on the second support 42. The second support 42 is movable relative to the first support 41, thereby moving the analog inductor 32 to change the distance between the analog inductor 32 and the electromagnetic coil 101. Typically, the bottom electromagnetic heating device is the most important heating component; therefore, the testing device of this application mainly tests the performance of the bottom electromagnetic heating device. To accommodate this, preferably, the testing device is configured such that the second support 42 can move up and down relative to the first support 41 during testing.
[0147] Preferably, an isolation plate 33 is also disposed on the second bracket 42 to move synchronously with the inductor 32, thereby stably supporting the analog inductor 32. Preferably, an analog resistor 31 is also disposed on the second bracket 42, thereby allowing for a stable connection with the analog inductor 32. Preferably, a heat dissipation device 35 is also disposed on the second bracket 42, thereby allowing for a stable application of heat to the analog resistor 31.
[0148] The second support 42 is preferably made of heat-resistant material and has a certain strength.
[0149] To enable the second bracket 42 to move, the detection and adjustment mechanism 40 further includes a position adjustment drive assembly 43. The position adjustment drive assembly 43 is disposed on the first bracket 41 and connected to the second bracket 42, for driving the second bracket 42 to move relative to the first bracket 41. The position adjustment drive assembly 43 is electrically connected to the power detection module 50, so that it is powered and controlled by the power detection module 50.
[0150] 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 electrically connected to the power detection module 50, for providing 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.
[0151] For example, the drive component 44 is configured as a motor, which is electrically connected to the control component 56 to operate 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, via gears, chains, 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 support 42. When the pulley 46 rotates, the pulley 46 winds the cable 47 or releases the cable 47, thereby pulling the second support 42. Preferably, the simulated container module 30 includes multiple sets of transmission assemblies 45 to stably pull the second support 42.
[0152] 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 controls the on / off state of the position adjustment drive switch circuit 64. When the position adjustment drive switch circuit 64 is on, the power detection module 50 supplies power to the drive component 44, enabling the second bracket 42 to move relative to the first bracket 41. When the position adjustment drive switch circuit 64 is off, the drive component 44 is disconnected from the power supply, preventing the second bracket 42 from moving.
[0153] 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, with its base connected to the control unit 56 and its emitter grounded. The drive unit 44 is connected between the positive terminal 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 terminal 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 via a wire. When the second support 42 needs to move, the control unit 56 outputs a high level at the base of the second transistor Q2, turning on the second transistor Q2 (i.e., turning on the position adjustment drive switch circuit 64). Current flows from the positive terminal VDD of the power supply to the collector of the second transistor Q2, causing the motor 44 to operate, thereby changing the distance between the equivalent cooking container and the electromagnetic coil 101. The control unit 56 continuously calculates the power of the electromagnetic heating cooking appliance 100. When the power reaches the preset rated power, the control unit 56 outputs a low level at the base of the second transistor Q2, turning off the second transistor Q2 (i.e., turning off the position adjustment drive switch circuit 64). There is no current at the collector of the second transistor Q2, so the motor 44 cannot work, and the second support 42 cannot move. This simulates a stable positional relationship between the inductor 32 and the electromagnetic coil 101, allowing the electromagnetic heating device to operate at a stable power.
[0154] The position adjustment drive switch circuit 64 acts as a switch for the motor 44. The control unit 56 also controls the rotation direction of the motor 44 through a steering control circuit (not shown), thereby bidirectionally adjusting the movement direction of the second bracket 42, which in turn bidirectionally adjusts the power of the electromagnetic heating device.
[0155] Understandably, after the detection process begins, the position of the second support 42 may not correspond to the rated power position 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 on the display unit 55, they can know whether the current power is the rated power. The button 51 is electrically connected to the control unit 56, and the user can increase or decrease 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 unit 56 controls the drive unit 44 to work, so that the second support 42 moves relative to the first support 41 in 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 unit 56 controls the drive unit 44 to work, so that the second support 42 moves relative to the first support 41 in a second direction (e.g., downward) (e.g., decreasing the actual working power). The second direction is opposite to the first direction.
[0156] For example, button 51 may include a first button 53 and a second button 54, both of which are operated by the user to issue commands to decrease power and increase power, respectively. When the user operates the first button 53, button 51 is operated in a first manner. The control unit 56 receives a signal and controls the steering control circuit and the position adjustment drive switch circuit 64 to operate. The position adjustment drive switch circuit 64 is turned on, and the steering control circuit controls the direction of the motor 44 to move the second bracket 42 along the first direction. When the user operates the second button 54, button 51 is operated in a second manner. The control unit 56 receives a signal and controls the steering control circuit and the position adjustment drive switch circuit 64 to operate. The position adjustment drive switch circuit 64 is turned on, and the steering control circuit controls the direction of the motor 44 to move the second bracket 42 along the second direction.
[0157] The first button 53 and the second button 54 are configured to have an on and off state, for example, they can be configured as long-press buttons. When the user presses and holds the button, the button is on, the motor 44 works accordingly, the second bracket 42 moves, and the working power changes; when the user releases the button (for example, when the working power has reached or is close to the rated power), the button is off, the motor 44 is de-energized, the second bracket 42 remains in the same position, and the working power remains stable.
[0158] After the user adjusts the operating power using button 51, the electromagnetic heating cooking appliance 100 operates at its rated power for a preset testing period. If the power of the electromagnetic heating cooking appliance 100 remains stable and shows no abnormalities during this preset testing period, the electromagnetic heating cooking appliance 100 is considered to have passed performance testing. If the power of the electromagnetic heating cooking appliance 100 is unstable or exhibits other abnormalities during this preset testing period, the electromagnetic heating cooking appliance 100 is considered to have failed performance testing.
[0159] Of course, the user can also pre-set the rated power of the electromagnetic heating cooking appliance 100 in the control unit 56, so that the above-mentioned manual power adjustment process can be automatically implemented by the control unit 56. For example, when the control unit 56 detects that the actual power is less than the rated power, it automatically sends a high level to the base of the second transistor Q2 and simultaneously, for example, makes the motor 44 rotate forward to reduce the distance between the analog inductor 32 and the electromagnetic coil 101. When the control unit 56 detects that the actual power is greater than the rated power, it automatically sends a high level to the base of the second transistor Q2 and simultaneously, for example, makes the motor 44 rotate in reverse to increase the distance between the analog inductor 32 and the electromagnetic coil 101. For example, a step-by-step movement method can be used, moving the second support 42 only a small distance each time until the actual power reaches the rated power. Furthermore, the closer the actual power is to the rated power, the smaller the distance moved, thus enabling precise control.
[0160] like Figure 4As shown, the power detection module 50 also includes a heat dissipation device switching circuit 63. The heat dissipation device switching circuit 63 is connected between the control component 56 and the heat dissipation device 35. The control component 56 controls the on / off state of the heat dissipation device switching circuit 63. When the heat dissipation device switching circuit 63 is on, the power detection module 50 supplies power to the heat dissipation device 35 to enable its operation; when the heat dissipation device switching circuit 63 is off, the heat dissipation device 35 is disconnected from the power supply, preventing it from operating.
[0161] Specifically, the heat dissipation device switching 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, with its base connected to the control component 56 and its emitter grounded. The heat dissipation device 35 is connected between the positive terminal 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 terminal VDD and the collector of the first transistor Q1, and the first terminal XH1 can be connected to the power interface of the heat dissipation device 35 via a wire. When the control component 56 outputs a high level at its base, the first transistor Q1 is turned on (that is, the heat dissipation device switching circuit 63 is turned on), and current flows from the positive terminal VDD of the power supply to the collector of the first transistor Q1, and the heat dissipation device 35 operates. When the control unit 56 outputs a low level at its base, the first transistor Q1 is turned off (i.e., the heat sink switch circuit 63 is turned off), and there is no current at the collector of the first transistor Q1, so the heat sink 35 does not work. Therefore, the heat sink switch circuit 63 is equivalent to the switch of the heat sink 35. Preferably, the heat sink 35 is always operational throughout the entire detection process.
[0162] The method by which the power detection module 50 converts AC mains power into low-voltage DC power is a conventional technique in this field and will not be described in detail here.
[0163] The embodiment illustrated in this application is an example of detecting a bottom electromagnetic heating device; however, the detection device according to this application can also be used to detect the performance of a side electromagnetic heating device. For example, by changing the axial direction of the analog inductor 32 to vertical, the analog inductor 32 can effectively sense the electromagnetic field of the side electromagnetic coil. The closer the analog inductor 32 is to the center of the receiving cavity 11 of the pot body 10, the smaller the induced current (lower power) within it; the closer the analog inductor 32 is to the side wall of the receiving cavity 11 of the pot body 10, the larger the induced current (higher power) within it. When the electromagnetic heating cooking appliance 100 has multiple electromagnetic heating devices (e.g., both bottom and side electromagnetic heating devices), the placement of the equivalent cooking container (especially the analog inductor 32) determines which electromagnetic heating device's electromagnetic coil 101 it interacts with, thereby detecting the performance (e.g., operating power) of that electromagnetic heating device.
[0164] Figure 4 The circuit shown can be packaged in a housing 52 (e.g., Figure 3 As shown, this makes the power detection module 50 a single, integrated device. The housing 52 has pre-drilled holes for the display component 55, buttons 51, and other necessary interfaces. Similarly, Figure 2 The simulated container module 30 shown can also be encapsulated in a housing to form a complete device, which makes it more convenient to use and also protects the various components of the simulated container module 30.
[0165] The processes and steps described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order than those described above. The order of steps in the above process can also be added, combined, or deleted according to actual needs.
[0166] In understanding the scope of this application, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of a described feature, element, component, group, whole, and / or step, but do not exclude the presence of other undescribed features, elements, components, groups, wholes, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.
[0167] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.
[0168] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.
[0169] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application.
Claims
1. A detection device for detecting electromagnetic heating cooking appliances, characterized in that, This includes a power detection module and an analog container module, among which, The power detection module is used to detect the operating power of the electromagnetic heating cooking appliance, and the power detection module includes: The power interface is used to connect to AC mains power and... The first AC interface is electrically connected to the power interface and is used to provide AC power to the electromagnetic heating cooking appliance during testing. The simulated container module is used to sense the electromagnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking appliance during detection and to generate heat to simulate a cooking container. The simulated container module includes: The support is used to provide stable support during testing. A simulated inductor, disposed on the bracket, is used to sense the electromagnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking appliance during detection. An analog resistor is disposed on the bracket and connected end-to-end with the analog inductor to form a closed circuit. The simulated inductor and the simulated resistor are spaced a certain distance apart.
2. The detection device according to claim 1, characterized in that, The power detection module also includes: A current detection circuit is connected in series between the power interface and the first AC interface to detect the operating current of the electromagnetic heating cooking appliance. A voltage detection circuit, connected in parallel with the first AC interface, is used to detect the operating voltage of the electromagnetic heating cooking appliance; and A control unit is electrically connected to the current detection circuit to analyze the operating current and to the voltage detection circuit to analyze the operating voltage. The control unit calculates the operating power of the electromagnetic heating cooking appliance based on the operating current and the operating voltage.
3. The detection device according to claim 2, characterized in that, The current detection circuit includes a current transformer, the primary coil of which is connected in series between the power interface and the first AC interface, and the secondary coil of which is electrically connected to the control component.
4. The detection device according to claim 2, characterized in that, The simulated container module also includes a detection and 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 includes the bracket, and the bracket includes: The first support is used to provide stable support during detection and maintain a constant relative position with the electromagnetic coil; and A second bracket is connected to the first bracket and movable relative to the first bracket, and the analog inductor is connected to the second bracket so that the distance between the analog inductor and the electromagnetic coil can be changed.
6. The detection device according to claim 5, characterized in that, The detection and adjustment mechanism also includes: A drive component, disposed on the first bracket and electrically connected to the control component to operate under the control of the control component, the drive component being used to provide a driving force for moving the second bracket relative to the first bracket; and A transmission assembly connects the drive component and the second bracket. The transmission assembly is movable relative to the first bracket under the drive of the drive component, so as to drive the second bracket to move relative to the first bracket.
7. The detection device according to claim 6, characterized in that, The drive component is configured as a motor, which is electrically connected to the control component to operate under the control of the control component; The transmission assembly includes: A pulley, connected to the motor, rotates under the drive of the motor, and A cable, one end of which is wound around the pulley, and the other end of which is connected to the second bracket.
8. The detection device according to claim 6, characterized in that, The power detection module further includes a position adjustment drive switch circuit, which is connected between the control component and the drive component. The control component controls the on / off state of the position adjustment drive switch circuit. When the position adjustment drive switch circuit is turned on, the power detection module supplies power to the drive component, causing the second bracket to move relative to the first bracket. When the position adjustment drive switch circuit is turned off, the drive component is disconnected from the power supply, so that the second bracket cannot be moved.
9. The detection device according to claim 8, characterized in that, The position adjustment drive switch circuit includes a second transistor, the base of which is connected to the control component, the emitter of which is grounded, and the drive component is connected between the positive terminal of the DC power supply of the power detection module and the collector of the second transistor.
10. The detection device according to claim 5, characterized in that, The power detection module also includes a display component, which is electrically connected to the control component and is used to display the working power of the electromagnetic heating cooking appliance.
11. The detection device according to claim 10, characterized in that, The power detection module also includes buttons for user operation, and the buttons are electrically connected to the control component. The detection device is configured such that when the button is operated by a user in a first manner, the control component controls the drive component to operate, causing the second bracket to move relative to the first bracket along a first direction. The detection device is further configured such that when the button is operated by a user in a second manner, the control component controls the drive component to operate, so that the second bracket moves relative to the first bracket in a second direction, wherein the second direction is opposite to the first direction.
12. The detection device according to claim 5, characterized in that, The detection device is configured such that the second support can move up and down relative to the first support during detection.
13. The detection device according to claim 12, characterized in that, The detection device is configured such that the analog resistor is positioned above the analog inductor during detection.
14. The detection device according to claim 2, characterized in that, The simulated container module also includes a heat dissipation device, which is disposed on the bracket and electrically connected to the control component for cooling the simulated resistor.
15. The detection device according to claim 14, characterized in that, The heat dissipation device is configured as a fan.
16. The detection device according to claim 14, characterized in that, The power detection module also includes a heat dissipation device switching circuit, which is connected between the control component and the heat dissipation device. The control component controls the on / off state of the heat dissipation device switching circuit. When the switching circuit of the heat dissipation device is turned on, the power detection module supplies power to the heat dissipation device to enable it to operate. When the switching circuit of the heat dissipation device is turned off, the heat dissipation device is disconnected from the power supply, so that the heat dissipation device cannot work.
17. The detection device according to claim 16, characterized in that, The heat dissipation device switching circuit includes a first transistor, the base of which is connected to the control component, the emitter of which is grounded, and the heat dissipation device is connected between the positive terminal of the DC power supply of the power detection module and the collector of the first transistor.
18. The detection device according to claim 1, characterized in that, The simulated container module also includes an isolation plate disposed on the bracket and used to be positioned between the simulated inductor and the electromagnetic coil during testing. The isolation plate is made of a non-magnetic material.
19. The detection device according to claim 18, characterized in that, The partition is made of plastic or resin material, and / or The thickness of the isolation plate is 8mm to 10mm.
20. The detection device according to any one of claims 1 to 19, characterized in that, The resistor is a cement resistor.
21. A detection method for electromagnetic heating cooking appliances, characterized in that, include: A power detection module is provided to detect the working power of the electromagnetic heating cooking appliance and to supply power to the electromagnetic heating cooking appliance during detection. A simulated container module is provided for sensing the electromagnetic field generated by the electromagnetic coil of the electromagnetic heating device of the electromagnetic heating cooking appliance during detection and generating heat to simulate a cooking container; The simulated container module is placed at a location where the electromagnetic field can be sensed, and the electromagnetic heating cooking appliance is powered on. When the power detection module detects that the electromagnetic heating cooking appliance has power output, it is determined that the electromagnetic heating cooking appliance is functioning normally. When the power detection module does not detect that the electromagnetic heating cooking appliance has power output, it is determined that the electromagnetic heating cooking appliance is functioning abnormally.
22. The detection method according to claim 21, characterized in that, Also includes: The operating power of the electromagnetic heating cooking appliance can be changed by altering the distance between the simulated container module and the electromagnetic coil.