Multifunctional heating device

Abstract

The invention discloses a multifunctional heating device which comprises a lower base, an upper base, a PCB, an exhaust fan, a flow guide shell, a heating module, a baking tray, a kettle and a suspension adjusting set. A containing cavity is formed in the lower base, and an air inlet hole is formed in the lower side of the lower base; the upper base is arranged on the upper side of the lower base, a communicating cavity communicating with the containing cavity is formed in the upper base, and a carrying frame is arranged on the upper side of the communicating cavity; an outer convex part is arranged on the peripheral side of the upper part of the upper base, an upper inclined surface inclined upwards is arranged on the lower side of the outer convex part, and an air outlet hole communicated with the communicating cavity is formed in the upper inclined surface; the PCB is arranged in the accommodating cavity; the exhaust fan is arranged in the containing cavity, located on the upper side of the air inlet hole and electrically connected with the PCB. The flow guide shell is arranged in the communicating cavity and located on the lower side of the carrying frame. The heating module is arranged on the carrying frame and is electrically connected with the PCB; the baking tray is arranged on the upper side of the heating module; the kettle is arranged on the upper side of the baking tray; and the suspension adjusting group spans the upper side of the upper base and is used for suspending and adjusting the position height of the kettle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating devices, in particular to a multifunctional heating device. BACKGROUND

[0002] With the rise of outdoor activities, electric ceramic stoves for tea cooking are also increasingly favored, which include a heating base and a kettle, and have relatively single function. In actual use, the kettle is directly placed on the heating base, so that the kettle cannot be suspended and the height of the kettle cannot be flexibly adjusted, which not only leads to the occupation of the food roasting space of the heating base by the kettle, but also cannot control the use effect of the kettle heating by adjusting the height of the kettle, to a certain extent, affecting the application range and practicality of the electric ceramic stove for tea cooking. Therefore, the technical personnel in the field urgently need to develop a multifunctional heating device to meet more actual use requirements. SUMMARY

[0003] The main purpose of the present application is to provide a multifunctional heating device to solve the above technical problems.

[0004] A multifunctional heating device, comprising a lower base and an upper base arranged on the upper side of the lower base, wherein the lower base is internally provided with a containing cavity, and the lower side of the lower base is provided with an air inlet hole in communication with the containing cavity;

[0005] The upper base is internally provided with a communication cavity in communication with the containing cavity, and the upper side of the communication cavity is provided with a loading rack;

[0006] The upper side of the upper base is provided with an outwardly convex outer convex portion, the lower side of the outer convex portion is provided with an upwardly inclined upper inclined surface, and the upper inclined surface is provided with an air outlet hole in communication with the communication cavity;

[0007] The multifunctional heating device further comprises:

[0008] A PCB board arranged in the containing cavity;

[0009] An exhaust fan arranged in the containing cavity and located on the upper side of the air inlet hole, and electrically connected with the PCB board;

[0010] A flow guide shell arranged in the communication cavity and located on the lower side of the loading rack, for guiding the airflow to flow out of the air outlet hole;

[0011] A heating module arranged on the loading rack and electrically connected with the PCB board;

[0012] A roasting plate arranged on the upper side of the heating module;

[0013] A kettle arranged on the upper side of the roasting plate;

[0014] a suspension adjustment group, which is arranged across the upper side of the upper base, for adjusting the height of the kettle.

[0015] The multifunctional heating device as described above, the upper left side of the lower base is provided with an upper left opening, and the upper right side of the lower base is provided with an upper right opening; the upper left opening and the upper right opening are in communication with the containing cavity.

[0016] The suspension adjustment group comprises:

[0017] a connecting bracket, which is arranged across the upper side of the upper base;

[0018] a hook, which is arranged on the upper side of the connecting bracket, for suspending the kettle;

[0019] a left lifting drive group, the lower end of which is arranged in the upper left opening and is electrically connected with the PCB board, and the upper end of which extends upward to be connected with the lower left end of the connecting bracket;

[0020] a right lifting drive group, the lower end of which is arranged in the upper right opening and is electrically connected with the PCB board, and the upper end of which extends upward to be connected with the lower right end of the connecting bracket.

[0021] The multifunctional heating device as described above, the upper left opening and the upper right opening are arranged in left-right symmetry.

[0022] The left lifting drive group and the right lifting drive group are also arranged in left-right symmetry.

[0023] The multifunctional heating device as described above, the left lifting drive group and the right lifting drive group are both multi-stage telescopic electric cylinders.

[0024] The multifunctional heating device as described above, the connecting bracket is a hollow inverted U-shaped bent pipe.

[0025] The multifunctional heating device as described above, the suspension adjustment group comprises:

[0026] a connecting bracket, which is arranged across the upper side of the upper base;

[0027] a hook, which is arranged in the connecting bracket, for suspending the kettle;

[0028] a lifting drive electric cylinder, which is arranged on the upper side of the connecting bracket, and the lower end of which is connected with the upper end of the hook, for driving the hook to move the kettle up and down.

[0029] The multifunctional heating device as described above, the inner side of the flow guide shell is provided with a flow guide channel which penetrates up and down, and the inner upper side of the flow guide channel is provided with an outwardly inclined flow guide curved surface for guiding the airflow out of the air outlet.

[0030] The multifunctional heating device as described above, the lower side of the loading frame is provided with downward extending connecting columns located in the flow guide channel, the number of the downward extending connecting columns is multiple, and the downward extending connecting columns are distributed at intervals outside the exhaust fan; each of the downward extending connecting columns is provided with a threaded connecting hole;

[0031] The upper side of the containing cavity is provided with a communication opening, the communication opening is provided with upward extending connecting columns, the number of the upward extending connecting columns is equal to the number of the downward extending connecting columns, each of the upward extending connecting columns is arranged correspondingly to the downward extending connecting column, and each of the upward extending connecting columns is provided with a through connecting hole;

[0032] The multifunctional heating device further comprises connecting screws which can pass through the through connecting holes and are connected to the threaded connecting holes.

[0033] The multifunctional heating device as described above further comprises:

[0034] The number of the simulated carbon blocks is multiple, and each of the simulated carbon blocks is arranged between the lower base and the upper base in a staggered manner.

[0035] The transparent shell is arranged outside the simulated carbon blocks.

[0036] The number of the light source assemblies is multiple, and each of the light source assemblies is arranged correspondingly in each of the simulated carbon blocks.

[0037] The detection circuit is arranged on the PCB, the detection circuit is used for acquiring the current heating temperature of the heating module, determining the brightness parameter of the light source assembly corresponding to the temperature data according to a preset temperature-brightness mapping table, and outputting a corresponding brightness control signal to the controlled end of the light source assembly, so that the light source assembly adjusts the running state according to the brightness parameter to simulate the burning of carbon fire.

[0038] The multifunctional heating device as described above, the PCB is further provided with a control circuit, the input end of the control circuit is connected to the output end of the detection circuit, and the output end of the control circuit is connected to the controlled end of the multiple light source assemblies; the control circuit is used for outputting a corresponding control signal according to the detection signal to control the corresponding light source assembly to adjust the running state and simulate the burning of carbon fire.

[0039] The detection circuit further comprises a wind sensing detection circuit arranged on the periphery of the transparent shell, an output end of the wind sensing detection circuit is connected with an input end of the control circuit, the wind sensing detection circuit is used for acquiring wind change data on the periphery of the transparent shell and outputting to the control circuit, the control circuit determines a corresponding flicker frequency of the light source assembly under the wind change data according to a preset wind-light source frequency mapping table, and outputs a corresponding control signal to control the corresponding light source assembly to flicker at a preset frequency.

[0040] Compared with the prior art, the above application has the following advantages:

[0041] The food placed on the baking tray can be roasted by the cooperation of the lower base, the upper base, the PCB board, the heating module and the baking tray. The air flow is first blown to the heating module and then flows out through the air outlet by the cooperation of the exhaust fan, the flow guide shell, the air inlet and the air outlet. The air outlet is arranged on the upper inclined surface of the outer convex part of the upper base to increase the angle of the air flow outwards, so as to further diffuse the hot air and avoid the accumulation of hot air, ensuring the stable operation of the heating module. In addition, the layered placement design of the heating module, the baking tray and the kettle can meet the dual function requirements of roasting and boiling water, and is beneficial to improving the space utilization. Furthermore, the height of the kettle can be adjusted by the suspension adjustment group, so that the kettle can be placed on the upper side of the baking tray for heating or lifted to stop heating. When the kettle is lifted to the high position, the baking space of the baking tray is fully utilized, thereby further increasing the food to be baked and improving the multifunctionality and practicability of the application, meeting the diversified needs of users and optimizing the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0043] Figure 1 It is a perspective view of the multifunctional heating device embodiment 1 of the present application.

[0044] Figure 2 It is a partial exploded view of the base in the multifunctional heating device embodiment 1 of the present application.

[0045] Figure 3 It is a sectional view of the base in the multifunctional heating device embodiment 1 of the present application.

[0046] Figure 4 This is a perspective view of the base described in Embodiment 1 of the multifunctional heating device of this application.

[0047] Figure 5 This is a cross-sectional view of the left lifting drive group or the right lifting drive group described in Embodiment 1 of the multifunctional heating device of this application.

[0048] Figure 6 This is a perspective view of Embodiment 2 of the multifunctional heating device of this application.

[0049] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the multifunctional heating device of this application.

[0050] Figure 8 This is a circuit block diagram of Embodiment 3 of the multifunctional heating device of this application.

[0051] Figure 9 This is another circuit block diagram of Embodiment 3 of the multifunctional heating device of this application.

[0052] Figure 10 This is a circuit diagram of Embodiment 3 of the multifunctional heating device of this application.

[0053] Figure 11 This is another circuit block diagram of Embodiment 3 of the multifunctional heating device of this application.

[0054] Figure 12 This is another circuit block diagram of Embodiment 3 of the multifunctional heating device of this application.

[0055] Figure 13 This is another circuit block diagram of Embodiment 3 of the multifunctional heating device of this application.

[0056] Figure 14 This is another circuit diagram of Embodiment 3 of the multifunctional heating device of this application. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0058] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0059] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0060] Example 1:

[0061] like Figures 1 to 5 As shown, a multifunctional heating device includes a lower base 11 and an upper base 13, a PCB board 200, an exhaust fan 12, a flow guide shell 14, a heating module 300, a baking tray 400, a kettle 500, and a suspension adjustment assembly 600.

[0062] The lower base 11 has an internal cavity 111 and an air inlet 114 communicating with the cavity 111 on its lower side.

[0063] The upper base 13 is located on the upper side of the lower base 11, and its interior is provided with a communicating cavity 131 that communicates with the accommodating cavity 111. A loading rack 132 is provided on the upper side of the communicating cavity 131.

[0064] The upper base 13 has an outwardly protruding part 133 on its upper periphery, and an upwardly inclined surface 1331 on the lower side of the outwardly protruding part 133. An air outlet 1332 communicating with the communicating cavity 131 is opened on the upwardly inclined surface 1331.

[0065] The PCB board 200 is disposed within the accommodating cavity 111; the exhaust fan 12 is disposed within the accommodating cavity 111, located above the air inlet 114, and electrically connected to the PCB board 200; the airflow guide housing 14 is disposed within the communicating cavity 131, located below the mounting rack 132, and is used to guide airflow from the air outlet 1332; the heating module 300 is disposed on the mounting rack 132 and electrically connected to the PCB board 200; the baking tray 400 is disposed above the heating module 300; the kettle 500 is disposed above the baking tray 400; the suspension adjustment assembly 600 is spanned above the upper base 13 and is used to suspend and adjust the height of the kettle 500.

[0066] This application utilizes the synergistic action of the lower base 11, upper base 13, PCB board 200, heating module 300, and baking tray 400 to achieve the grilling of food placed on the baking tray 400. Subsequently, through the cooperation of the exhaust fan 12, the air guide housing 14, the air inlet 114, and the air outlet 1332, directional airflow is first directed towards the heating module 300 and then flows out through the air outlet 1332, achieving a heat dissipation effect. Furthermore, the air outlet 1332 is located on the upwardly inclined surface 1331 of the outwardly protruding portion 133 of the upper base 13, aiming to increase the angle of the outward airflow to further diffuse the heat, effectively preventing heat accumulation and ensuring heating efficiency. Module 300 operates stably. Furthermore, the layered design of the heating module 300, baking tray 400, and kettle 500 simultaneously meets the dual functions of grilling and boiling water, while also improving space utilization. Moreover, the height of the kettle 500 can be flexibly adjusted via the suspension adjustment assembly 600, allowing it to be lowered onto the baking tray 400 for heating or raised to suspend and stop heating. When the kettle 500 is raised to a high position, the baking space of the baking tray 400 is fully utilized, further increasing the amount of food that can be grilled. This enhances the multifunctionality and practicality of the application, meets diverse user needs, and optimizes the user experience.

[0067] Furthermore, the upward tilt angle of the upper inclined surface 1331 is in the range of 10° to 20°, preferably 15°, which is intended to be suitable for hot air to flow out through the air outlet 1332.

[0068] Furthermore, the lower base 11 has an upper left opening 112 on its upper left side and an upper right opening 113 on its upper right side; both the upper left opening 112 and the upper right opening 113 are connected to the accommodating cavity 111.

[0069] The suspension adjustment assembly 600 includes a connecting bracket 61, a hook 62, a left lifting drive assembly 63, and a right lifting drive assembly 64;

[0070] The connecting bracket 61 is horizontally positioned above the upper base 13; the hook 62 is located on the upper side of the connecting bracket 61 for suspending the kettle 500; the lower end of the left lifting drive assembly 63 is located within the upper left opening 112 and electrically connected to the PCB board 200, with its upper end extending upward to connect to the lower left end of the connecting bracket 61; the lower end of the right lifting drive assembly 64 is located within the upper right opening 113 and electrically connected to the PCB board 200, with its upper end extending upward to connect to the lower right end of the connecting bracket 61. This application achieves smooth lifting of the connecting bracket 61 through the coordinated action of the left lifting drive assembly 63 and the right lifting drive assembly 64, thereby ensuring the accuracy and stability of the kettle 500 height adjustment.

[0071] Furthermore, the upper left opening 112 and the upper right opening 113 are arranged symmetrically from left to right;

[0072] The left lifting drive group 63 and the right lifting drive group 64 are also arranged symmetrically from left to right.

[0073] Both the left lifting drive group 63 and the right lifting drive group 64 are multi-stage telescopic electric cylinders, and both preferably include multi-stage telescopic rods and drive motors. The extension and retraction of the multi-stage telescopic rods are controlled by the drive motors to achieve smooth lifting and lowering of the connecting bracket 61, ensuring that the height adjustment of the kettle 500 is accurate and stable.

[0074] Furthermore, the connecting bracket 61 is a hollow inverted U-shaped bend. This is intended to meet practical usage requirements.

[0075] Furthermore, the flow guide housing 14 has a vertically penetrating flow guide channel 141 inside, and the upper side of the flow guide channel 141 has an outwardly inclined guide surface 1411 for guiding airflow out of the air outlet 1332. This application utilizes the synergistic effect of the flow guide channel 141 and the outwardly inclined guide surface 1411 on the flow guide housing 14 to guide the airflow outward as it flows out of the air outlet 1332, improving the directionality and smoothness of the airflow, reducing turbulence and stagnation of the airflow within the connecting cavity, and enhancing the overall airflow guiding effect.

[0076] Furthermore, the lower side of the mounting rack 132 is provided with a downwardly extending connecting post 1321 located in the flow channel 141. There are multiple downwardly extending connecting posts 1321, which are spaced apart on the outside of the exhaust fan 12. Each downwardly extending connecting post 1321 is provided with a threaded connection hole.

[0077] The upper side of the accommodating cavity 111 is provided with a communicating opening 1111, and an upwardly extending connecting post 115 is provided in the communicating opening 1111. The number of the upward extending connecting posts 115 is equal to the number of the downward extending connecting posts 1321, and each of the upward extending connecting posts 115 is correspondingly provided with a downwardly extending connecting hole.

[0078] The multifunctional heating device also includes a connecting screw that can pass through the relief connection through hole and connect to the threaded connection hole.

[0079] This application achieves a stable assembly of the heating module 300 by providing multiple lower extension connecting posts 1321 that extend downward into the flow channel 141 on the lower side of the mounting rack 132 and are spaced apart on the outside of the exhaust fan 12, which are matched with upper extension connecting posts 115 that extend upward into the communication opening 1111 on the lower base 11 and are equal in number and correspond one-to-one with the lower extension connecting posts 1321, and by using connecting screws to pass through the clearance connecting through holes of the upper extension connecting posts 115 and connect to the threaded connecting holes of the lower extension connecting posts 1321.

[0080] Furthermore, the heating module 300 includes a heating plate and a temperature sensor located on the underside of the heating plate. The PCB board 200 is equipped with a heating control circuit and a power switch. This technology is existing technology and will not be described in detail here.

[0081] Example 2:

[0082] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that:

[0083] The suspension adjustment assembly 600 includes a connecting bracket 61a, a hook 62a, and a lifting drive electric cylinder 63a. The connecting bracket 61a is horizontally positioned on the upper side of the upper base 13. The hook 62a is located inside the connecting bracket 61a and is used to suspend the kettle 500. The lifting drive electric cylinder 63a is located on the upper side of the connecting bracket 61a, and its lower end is connected to the upper end of the hook 62a, for driving the hook 62a to move the kettle 500 up and down. The lifting drive electric cylinder 63a is preferably a multi-stage telescopic electric cylinder.

[0084] In this embodiment, the lifting drive electric cylinder 63a, which is set on the connecting bracket 61a, drives the hook 62a to move up and down, so as to realize the adjustment of the height of the kettle 500 suspended on the hook 62a, thereby meeting the usage requirements of adjusting the height of the kettle 500.

[0085] Example 3

[0086] Reference Figures 7 to 14 As shown, the difference between this embodiment and Embodiments 1 and 2 is that:

[0087] The multifunctional heating device also includes:

[0088] There are multiple simulated carbon blocks 20, all of which are located between the lower base 11 and the upper base 13 and are arranged in an alternating manner;

[0089] A transparent shell 70 is disposed on the outside of the simulated carbon block 20;

[0090] There are multiple light source components 30, and each light source component 30 is respectively disposed in each of the simulated carbon blocks 20;

[0091] The detection circuit 40 is located on the PCB board 200. The detection circuit 40 is used to obtain the current heating temperature of the heating module 300, determine the brightness parameter of the light source component 30 corresponding to the temperature data according to the preset temperature-brightness mapping table, and output the corresponding brightness control signal to the controlled end of the light source component 30 so that the light source component 30 adjusts its operating state according to the brightness parameter to simulate charcoal combustion.

[0092] The preset temperature-brightness mapping table can be set in advance. First, the minimum and maximum temperatures of the heating module 300 and the minimum and maximum brightness of the light source component 30 are determined. Then, the minimum temperature is mapped to the minimum brightness and the maximum temperature is mapped to the maximum brightness. After that, the proportional relationship between other temperatures and brightness is calculated according to the ratio and mapped one by one.

[0093] When the detection circuit 40 detects in real time that the temperature of the heating module 300 is gradually increasing, the brightness displayed by the light source component 30 is brighter, and vice versa.

[0094] Furthermore, the output of the detection circuit 40 is also connected to the controlled end of the suspension adjustment group 600 to control the suspension adjustment group 600 to adjust the height of the kettle 500 according to the temperature value detected by the detection circuit 40. For example, when the temperature is low, the kettle 500 is brought closer to the heating module 300 to better heat the kettle 500, while when the temperature is high, the kettle 500 is moved away from the heating module 300 to avoid the kettle 500 from being kept in the heating state for a long time and to avoid the problem of the kettle 500 dry burning.

[0095] Optionally, the detection circuit 40 includes multiple temperature sensor U3 circuits 41 and multiple first operational amplifier circuits 42, wherein:

[0096] Multiple temperature sensor U3 circuits 41 are disposed at multiple locations on the heating assembly 13; the input terminal of the first operational amplifier circuit 42 is connected to the output terminal of the corresponding temperature sensor U3 circuit 41, and the output terminal of the first operational amplifier circuit 42 is connected to the controlled terminal of the corresponding light source assembly 30.

[0097] The temperature sensor U3 circuit 41 is a circuit module used to detect temperature changes in the heating area. It can be implemented using a detection circuit 40 built with a thermistor or thermocouple combined with a voltage divider resistor, converting temperature changes into a voltage signal output. The first operational amplifier circuit 42 is an operational amplifier circuit that amplifies the output signal of the temperature sensor U3. It can be implemented using an inverting amplifier or a non-inverting amplifier structure. The amplification factor can be changed by adjusting the resistance value of the feedback resistor, thereby matching the driving signal range of the light source component 30.

[0098] Multiple temperature sensor circuits 41 are arranged in different areas of the heating assembly 13, such as the edge and center of the tray 131. When the temperature of a certain area rises, the corresponding temperature sensor circuit 41 outputs a stronger signal. This signal is amplified by the first operational amplifier circuit 42 and then transmitted to the controlled terminal of the light source assembly 30. For example, when the temperature of the center area of ​​the tray 131 is higher than that of the edge area, the brightness of the light source assembly 30 corresponding to the center area is increased, while the brightness of the light source in the edge area remains at a lower level, thus visually creating a sense of alternating light and dark layers as the charcoal burns.

[0099] Traditional electric ceramic stoves typically use a single temperature sensor U3 to detect the overall heating temperature, which cannot distinguish temperature differences between different areas. This embodiment, through multi-point temperature detection and independent signal processing, enables the light source brightness to be dynamically adjusted according to local temperature, overcoming the technical deficiency of a single flame simulation effect. This embodiment achieves refined detection of temperature distribution in the heating area and, by independently controlling the light source brightness in different areas, makes the light effect changes of the simulated carbon block 20 consistent with the heat distribution characteristics of real charcoal combustion, significantly improving the realism of the flame simulation.

[0100] Optionally, the temperature sensor U3 circuit 41 includes a temperature sensor U3 and a fourth resistor R4, wherein:

[0101] The temperature sensor U3 is used to detect the current heating temperature; the first end of the fourth resistor R4 is located at the enable terminal of the temperature sensor U3, and the second end of the fourth resistor R4 is grounded.

[0102] The first operational amplifier circuit 42 includes a first operational amplifier chip U1.2, wherein:

[0103] A first resistor R1 is connected in series between the non-inverting input of the first operational amplifier chip U1.2 and the output of the temperature sensor U3. A second resistor R2 is connected in series between the inverting input of the first operational amplifier chip U1.2 and ground. A third resistor R3 is connected in parallel between the non-inverting input and the output of the first operational amplifier chip U1.2. The output of the first operational amplifier chip U1.2 is connected to the corresponding light source component 30.

[0104] Among them, temperature sensor U3 refers to a device that converts temperature changes into electrical signals, which can be implemented using a thermistor or thermocouple, and is used to monitor the temperature distribution of the heated area in real time. The fourth resistor R4 is a current-limiting element connected between the enable terminal of temperature sensor U3 and ground, and can be a metal film resistor with a resistance of, for example, 1kΩ, used to stabilize the static operating point of temperature sensor U3. The first operational amplifier chip U1.2 refers to an operational amplifier with differential input and single-ended output, which can be an integrated circuit such as LM358 or LM324, used to linearly amplify the weak signal from temperature sensor U3. The first resistor R1, the second resistor R2, and the third resistor R3 are matching components that constitute the inverting amplifier circuit; they are used to set the gain and input impedance of the operational amplifier circuit.

[0105] The temperature sensor U3 is configured to detect the temperature values ​​at different locations on the heating component 13. When the temperature in a certain area rises, its output terminal generates a corresponding voltage change signal. This signal is input to the non-inverting input of the first operational amplifier chip U1.2 through the first resistor R1, while the second resistor R2 forms a reference voltage at the inverting input. The third resistor R3 is connected between the non-inverting input and the output terminal to form a negative feedback loop, allowing the operational amplifier circuit to process the input signal with a preset amplification factor. The amplified output signal is transmitted to the corresponding light source component 30, which enhances the brightness of the light source in the higher temperature area, thereby dynamically simulating the brightness change effect caused by local temperature differences during charcoal combustion.

[0106] Compared to existing technologies, traditional ceramic cooktops typically use a single sensor for temperature detection, failing to achieve independent detection across multiple areas and resulting in a lack of layered control over the light source. This embodiment addresses this by placing temperature sensor U3 circuits 41 at multiple locations on the heating component 13, combined with an adjustable-gain operational amplifier circuit structure. This allows for precise differentiation of temperature gradients in different areas, enabling differentiated adjustment of the light source brightness and making the flame simulation more closely resemble the dynamic combustion state of real charcoal. This embodiment generates corresponding control signals based on the actual temperature distribution of the heating area, establishing a spatial correspondence between the brightness change of the light source component 30 and the temperature field. This closed-loop control mechanism based on physical quantity feedback effectively improves the realism and responsiveness of the flame simulation. Furthermore, the use of standardized electronic components to construct the detection circuit 40 reduces hardware complexity while maintaining accuracy.

[0107] Furthermore, the PCB board 200 is also provided with a control circuit 50. The input terminal of the control circuit 50 is connected to the output terminal of the detection circuit 40, and the output terminal of the control circuit 50 is respectively connected to the controlled terminals of the multiple light source components 30. The control circuit 50 is used to output a corresponding control signal according to the detection signal to control the corresponding light source component 30 to adjust its operating state and simulate charcoal combustion.

[0108] The detection circuit 40 further includes a wind sensing detection circuit 43, which is disposed around the transparent housing 70. The output terminal of the wind sensing detection circuit 43 is connected to the input terminal of the control circuit 50. The wind sensing detection circuit 43 is used to acquire wind force change data around the transparent housing 70 and output it to the control circuit 50. The control circuit 50 determines the flashing frequency of the corresponding light source component 30 under the wind force change data according to a preset wind force-light source frequency mapping table, and outputs a corresponding control signal to control the corresponding light source component 30 to flash at a preset frequency.

[0109] The wind power-light source frequency mapping table is set according to the wind conditions around the furnace body and the frequency threshold of the light source. That is, different wind forces correspond to different wind frequencies. For example, if the wind force is set to three levels, the frequency is also divided into three levels (e.g., 25%, 50%, and 75% PWM to control the flashing of the light source component). The wind power-light source frequency mapping table can be determined by observing and recording the influence of different wind forces on the fire in the actual furnace, or it can be determined according to a certain wind force ratio.

[0110] The control circuit 50 controls the corresponding light source component 30 to flash at a preset frequency, which can simulate the process of wind blowing across the furnace body. The transparent shell 70 is mainly used to protect the light source component 30 from external damage. In this embodiment, one, two or more microphones are set on any one of the following: the lower base 11, the upper base 13, or the transparent shell 70. If there is one microphone, it simulates the case of only one air vent. If there are two or more microphones, it simulates the effect of wind on the fire when the furnace body is hollow.

[0111] If there are multiple microphones, the wind signals collected by the microphones in different locations will cause the flashing frequencies of the multiple light source components 30 to be different. For example, the light source component closer to the microphone that collects the wind signal will flash at a higher frequency, while the light source component 30 farther away from the microphone that collects the wind signal will flash at a lower frequency, thus simulating the appearance of wind blowing a fire.

[0112] Optionally, the control circuit 50 refers to a logic processing module used to receive detection signals and generate control signals. It can be implemented using a microcontroller (such as an MCU) or a programmable logic device, converting temperature and wind speed data into light source drive signals through a preset algorithm. The detection signal refers to an electrical signal reflecting changes in heating temperature and ambient wind speed, which can be transmitted in analog voltage or digital signal form, used for real-time feedback of the transparent housing 70's operating status. Adjusting the operating status of the light source component 30 refers to changing the luminous intensity, flashing frequency, or color parameters, which can be achieved using a dimmable LED array or an RGB light source module, simulating the visual effect of charcoal combustion through dynamically changing light effects.

[0113] When the detection circuit 40 acquires heating temperature data, the control circuit 50 generates a drive signal according to a preset temperature-brightness mapping relationship, causing the light source component 30 to emit high-brightness red light in high-temperature areas and dark yellow light in low-temperature areas. For example, when the temperature sensor U3 detects that the local temperature reaches 200℃, the control circuit 50 outputs a PWM signal with a duty cycle of 80% to drive the corresponding light source component 30, increasing its brightness to a preset peak value. When the wind sensor detects an increase in ambient wind speed, the control circuit 50 synchronously increases the light source flashing frequency, for example, shortening the flashing period from 1 second to 0.5 seconds to simulate the dynamic effect of a flame being blown by the wind. The color change of the light source component 30 is achieved through RGB mixing control, forming a gradual distribution from orange-red to dark red under the influence of the temperature gradient.

[0114] Traditional electric ceramic stoves only adjust the brightness of their light source, failing to respond to changes in environmental parameters. This embodiment achieves a dynamic correlation between light effect and physical parameters through a closed-loop control system. For example, when increased wind is detected, the light source component 30 not only increases its flicker frequency but also creates a brightness fluctuation gradient on the windward side, improving visual simulation accuracy by more than three times compared to a fixed light effect scheme. Existing technologies lack the ability to handle multi-parameter coordinated control, while the control circuit 50 in this embodiment, through multi-channel signal fusion processing, can coordinate multiple light source components 30 to achieve an overall combustion effect.

[0115] This embodiment addresses the technical shortcomings of traditional ceramic cooktops, which produce monotonous lighting effects, and achieves a visualized and dynamic simulation of charcoal combustion. When the user adjusts the heating power, the light source brightness responds in real time to temperature changes; when encountering environmental airflow disturbances, the lighting effect fluctuates synchronously. While maintaining the safety of electric heating, this solution, through a multi-parameter linked light control system, makes the lighting performance of the ceramic cooktop more closely resemble the physical characteristics of real charcoal combustion, enhancing the immersive experience during use.

[0116] Optionally, the wind sensing detection circuit 43 refers to a circuit that generates an electrical signal by detecting changes in environmental wind force. This can be implemented using a microphone array 431 combined with an amplification circuit, indirectly reflecting wind intensity by collecting wind sound signals from the environment. The microphone 431 is a sensor that converts sound waves into electrical signals; it can be implemented using capacitive or piezoelectric microphones 431, arranged at intervals along the 70 circumference of the transparent housing to detect wind distribution in different directions. The wind sound signal amplification circuit 432 refers to a circuit that amplifies weak sound wave signals. This can be implemented using a transistor amplification circuit, with the first transistor Q2 and a resistor and capacitor forming an amplification link to boost the microphone 431 output signal to a processable level.

[0117] When wind changes occur around the transparent housing 70, multiple microphones 431 collect wind signals from the corresponding areas. These signals are coupled to the base of the first transistor Q2 via the first capacitor C1. The seventh resistor R7 provides a bias voltage. The first transistor Q2 amplifies the signal and outputs it to the control circuit 50 through its collector. The control circuit 50 determines the direction and intensity of the wind based on the signal strength differences between the channels of each microphone 431, and then controls the corresponding light source component 30 to flicker or change brightness. For example, when stronger winds are detected on the left, the flickering frequency of the left-side light source component 30 increases, simulating the dynamic effect of a flame being blown by the wind.

[0118] Existing ceramic cooktops control light source changes using only fixed modes, failing to respond to wind disturbances in a real environment, resulting in a lack of dynamic realism in flame simulation. This embodiment addresses this by incorporating a multi-channel wind sensor circuit 43, which can perceive environmental wind distribution in real time and drive the light source component 30 to produce dynamic changes related to wind intensity and direction, making the flame simulation effect closer to a real charcoal combustion scene. This embodiment can dynamically adjust the operating state of the light source component 30 according to changes in environmental wind, causing the flame simulation effect to exhibit regional brightness fluctuations and flickering responses with the influence of external wind, effectively improving the visual fidelity of the charcoal combustion scene and enhancing the user's immersive experience.

[0119] Optionally, the wind sensing detection circuit 43 includes multiple microphones 431 and multiple wind sound signal amplification circuits 432. The input terminals of the multiple wind sound signal amplification circuits 432 are connected to the output terminals of the corresponding microphones 431, and the output terminals of the wind sound signal amplification circuits 432 are connected to the input terminals of the control circuit 50. The wind sound signal amplification circuits 432 are used to amplify the collected wind sound signals and transmit them to the control circuit 50.

[0120] The microphone 431 is a sensor that converts sound wave signals into electrical signals. It can be implemented using an electret microphone 431, whose internal electret material can sense changes in air pressure and generate corresponding voltage signals. The wind sound signal amplification circuit 432 is a circuit module that amplifies the weak electrical signal output from the microphone 431. It can be implemented using a transistor amplifier circuit, and the signal gain is matched by adjusting the parameters of the bias resistor and the load resistor. The control circuit 50 is a logic processing unit that generates light source control signals based on the amplified wind sound signals. It can be implemented using a microcontroller or a programmable logic device, and maps the wind intensity to the light source flicker frequency or brightness change parameters through a preset algorithm.

[0121] Microphones 431 are spaced apart along the periphery of the transparent housing 70 to detect wind forces from different directions. When ambient wind acts on the surface of the transparent housing 70, the airflow interacts with the structure of the transparent housing 70 to generate sound wave signals of a specific frequency. Microphones 431 convert the sound waves into electrical signals and transmit them to the wind signal amplification circuit 432. The amplification circuit uses a transistor operating in the linear amplification region to boost the signal voltage, and after filtering, outputs it to the control circuit 50. The control circuit 50 determines the direction of the wind force based on the signal strength differences of each microphone 431 channel and drives the corresponding light source component 30 to produce a dynamic flashing effect, simulating the shape change of a flame affected by wind.

[0122] In some specific embodiments, microphones 431 can be evenly distributed at 90-degree intervals on the four sides of the transparent housing 70 to form an omnidirectional detection array. The transistors in the wind signal amplification circuit 432 can be low-noise models, the base bias resistor can be set to the 10 kΩ range, and the collector load resistor can be set to the 2 kΩ range to ensure the signal amplification factor is within the range of 20-50 times. The control circuit 50 can be configured to trigger a rapid flashing mode of the light source in that area when the signal amplitude of a microphone 431 on a certain side exceeds a threshold, while simultaneously reducing the brightness of the light sources in adjacent areas to create a dynamic light and shadow effect.

[0123] Traditional electric ceramic stoves control light source changes only through a fixed program, failing to respond to real-world wind variations. This embodiment, by arranging a multi-directional microphone array 431 in conjunction with a signal amplification circuit, achieves real-time detection and spatial positioning of natural wind, making the response mode of the light source component 30 highly consistent with the wind-induced characteristics of a real flame, thus overcoming the mechanical rigidity of artificial flame simulation.

[0124] Through the above technical solution, this embodiment realizes the dynamic linkage between the flame simulation effect and real environmental factors. When the wind force in different directions is detected, the light source component 30 can generate brightness fluctuations and flicker frequency changes in the corresponding area, so that the visual effect of charcoal burning has a sense of spatial hierarchy and dynamic responsiveness, which significantly improves the immersive experience during use.

[0125] Optionally, the wind signal amplification circuit 432 includes a first capacitor C1, a sixth resistor R6, and a first transistor Q2, wherein:

[0126] The first terminal of the first capacitor C1 is connected to the positive terminal of the microphone 431; the first terminal of the sixth resistor R6 is connected to the first input terminal of the control circuit 50, and the second terminal of the sixth resistor R6 is connected to the common node of the positive terminals of the first capacitor C1 and the microphone 431; the base of the first transistor Q2 is connected to the second terminal of the first capacitor C1, the emitter of the first transistor Q2 is grounded, a seventh resistor R7 is connected in parallel between the base and emitter of the first transistor Q2, and the collector of the first transistor Q2 is connected to the second input terminal of the control circuit 50.

[0127] In this circuit, the first capacitor C1 is a coupling capacitor used to isolate the DC component and transmit the AC signal. It can be implemented using an electrolytic capacitor or a ceramic capacitor. It blocks DC interference and transmits the AC wind sound signal collected by the microphone 431. The sixth resistor R6 is a current-limiting resistor used to adjust the input signal impedance. It can be implemented using a carbon film resistor or a metal film resistor. It reduces signal reflection by matching the impedance characteristics of the signal transmission path. The first transistor Q2 is a transistor device used to amplify the weak wind sound signal. It can be implemented using an NPN silicon transistor. It receives the signal at its base and drives the collector to output the amplified signal to the control circuit 50. The seventh resistor R7 is a bias resistor used to stabilize the operating point of the transistor. It can be implemented using a fixed-value resistor. It avoids signal distortion by adjusting the voltage difference between the base and emitter.

[0128] The wind sound signal collected by microphone 431 is filtered by capacitor C1 to remove the DC component, and then input to the base of transistor Q2 via resistor R6. Resistor R7 provides a stable bias voltage for the transistor, enabling it to operate in the linear amplification region. The amplified signal is output from the collector to control circuit 50. Control circuit 50 adjusts the flashing frequency of the corresponding light source component 30 according to the signal strength, simulating the dynamic effect of a flame being blown by the wind. This circuit achieves real-time linkage between wind speed changes and light source status through multi-stage signal processing.

[0129] Traditional ceramic cooktops lack wind detection and signal amplification modules, making it impossible to adjust the flame simulation effect according to ambient wind conditions. This embodiment utilizes a dedicated circuit consisting of capacitive coupling, resistor current limiting, and transistor amplification to convert weak wind noise signals into recognizable electrical signals. This allows the light source component 30 to respond to wind changes, enhancing the realism and dynamic performance of the flame simulation. This embodiment achieves a precise correlation between wind changes and the flame simulation effect. The amplified wind noise signal is interpreted by the control circuit 50 into corresponding light source control commands, causing the internal light source of the simulated carbon block 20 to exhibit a visual effect of swaying in the wind. This solves the technical problem of the monotonous and rigid flame simulation of traditional ceramic cooktops, improving the realism of the user experience.

[0130] The above description is one implementation method provided in conjunction with specific content, and does not imply that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to or identical to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A multifunctional heating device, comprising a lower base (11) and an upper base (13) disposed on the upper side of the lower base (11), characterized in that: The lower base (11) has an internal cavity (111) and an air inlet (114) connected to the cavity (111) on its lower side. The upper base (13) has a communicating cavity (131) that communicates with the accommodating cavity (111), and a mounting rack (132) is provided on the upper side of the communicating cavity (131). The upper base (13) has an outwardly protruding part (133) on its upper periphery, and an upwardly inclined surface (1331) is provided on the lower side of the outwardly protruding part (133). An air outlet (1332) communicating with the communicating cavity (131) is provided on the upwardly inclined surface (1331). The multifunctional heating device also includes: PCB board (200), which is disposed in the accommodating cavity (111); An exhaust fan (12) is disposed in the cavity (111), located above the air inlet (114), and electrically connected to the PCB board (200). A flow guide housing (14) is disposed in the communicating cavity (131) and located below the mounting rack (132) to guide airflow out from the air outlet (1332); A heating module (300) is disposed on the mounting rack (132) and electrically connected to the PCB board (200); A baking tray (400) is disposed on the upper side of the heating module (300); A kettle (500) is positioned on the upper side of the baking pan (400); A suspension adjustment assembly (600) is mounted on the upper side of the upper base (13) for suspending and adjusting the height of the kettle (500).

2. The multifunctional heating device according to claim 1, characterized in that, The lower base (11) has an upper left opening (112) on its upper left side and an upper right opening (113) on its upper right side; the upper left opening (112) and the upper right opening (113) are both connected to the accommodating cavity (111); The suspension adjustment assembly (600) includes: A connecting bracket (61) is positioned across the upper side of the upper base (13); A hook (62) is provided on the upper side of the connecting bracket (61) for suspending the kettle (500); The lower end of the left lifting drive assembly (63) is located in the upper left opening (112) and electrically connected to the PCB board (200), and its upper end extends upward to connect to the lower left end of the connecting bracket (61). The right lifting drive assembly (64) has its lower end located in the upper right opening (113) and electrically connected to the PCB board (200), and its upper end extends upward to connect to the lower right end of the connecting bracket (61).

3. The multifunctional heating device according to claim 2, characterized in that, The upper left opening (112) and the upper right opening (113) are arranged symmetrically from left to right; The left lifting drive group (63) and the right lifting drive group (64) are also arranged symmetrically.

4. The multifunctional heating device according to claim 3, characterized in that, Both the left lifting drive group (63) and the right lifting drive group (64) are multi-stage telescopic electric cylinders.

5. The multifunctional heating device according to claim 2, characterized in that, The connecting bracket (61) is a hollow inverted U-shaped bend.

6. The multifunctional heating device according to claim 2, characterized in that, The suspension adjustment assembly (600) includes: A connecting bracket (61a) is disposed across the upper side of the upper base (13); A hook (62a) is provided inside the connecting bracket (61a) for suspending the kettle (500); A lifting drive electric cylinder (63a) is located on the upper side of the connecting bracket (61s), and its lower end is connected to the upper end of the hook (62a) for driving the hook (62a) to move the kettle (500) up and down.

7. The multifunctional heating device according to claim 1, characterized in that, The flow guide housing (14) has a flow guide channel (141) that runs vertically through it. The upper side of the flow guide channel (141) has an outwardly inclined flow guide surface (1411) for guiding the airflow out of the air outlet (1332).

8. The multifunctional heating device according to claim 7, characterized in that, The lower side of the mounting rack (132) is provided with a downwardly extending connecting post (1321) located in the flow channel (141). There are multiple downwardly extending connecting posts (1321) and they are distributed at intervals on the outside of the exhaust fan (12). Each downwardly extending connecting post (1321) is provided with a threaded connection hole. The upper side of the accommodating cavity (111) is provided with a connecting opening (1111), and an upwardly extending upper connecting post (115) is provided in the connecting opening (1111). The number of the upper connecting posts (115) is equal to the number of the lower connecting posts (1321), and each upper connecting post (115) is correspondingly provided with a lower connecting post (1321). Each upper connecting post (115) is provided with a vertically penetrating clearance connecting through hole. The multifunctional heating device also includes a connecting screw that can pass through the relief connection through hole and connect to the threaded connection hole.

9. The multifunctional heating device according to claim 1, characterized in that, The multifunctional heating device also includes: There are multiple simulated carbon blocks (20), all of which are located between the lower base (11) and the upper base (13) and are arranged in an alternating manner; A transparent shell (70) is disposed on the outside of the simulated carbon block (20); There are multiple light source components (30), and each light source component (30) is respectively disposed in each of the simulated carbon blocks (20); A detection circuit (40) is provided on the PCB board (200). The detection circuit (40) is used to obtain the current heating temperature of the heating module (300), determine the brightness parameter of the light source component (30) corresponding to the temperature data according to the preset temperature-brightness mapping table, and output the corresponding brightness control signal to the controlled end of the light source component (30) so that the light source component (30) adjusts its operating state according to the brightness parameter to simulate charcoal combustion.

10. The multifunctional heating device according to claim 9, characterized in that, The PCB board (200) is also provided with a control circuit (50). The input terminal of the control circuit (50) is connected to the output terminal of the detection circuit (40), and the output terminal of the control circuit (50) is connected to the controlled terminals of multiple light source components (30). The control circuit (50) is used to output a corresponding control signal according to the detection signal to control the corresponding light source component (30) to adjust its operating state and simulate charcoal combustion. The detection circuit (40) further includes a wind sensing detection circuit (43), which is located around the transparent shell (70). The output of the wind sensing detection circuit (43) is connected to the input of the control circuit (50). The wind sensing detection circuit (43) is used to acquire wind force change data around the transparent shell (70) and output it to the control circuit (50). The control circuit (50) determines the flashing frequency of the corresponding light source component (30) under the wind force change data according to a preset wind force-light source frequency mapping table, and outputs a corresponding control signal to control the corresponding light source component (30) to flash at a preset frequency.

Images