Heating furnace voice intelligent regulation system and electric fire generating electric heating furnace

Abstract

This invention provides a voice-controlled intelligent control system for a heating furnace and an electric heating furnace, including a voice acquisition module, a voice recognition module, a command parsing module, and an execution control module. The voice acquisition module is used to acquire user voice commands, and its output is connected to the input of the voice recognition module. The execution control module outputs corresponding control signals to the electric heating furnace. This invention relates to the field of intelligent control. By setting up a voice acquisition module, a voice recognition module, a command parsing module, and an execution control module, this invention enables users to input control commands to the electric heating furnace via voice, and the execution control module outputs corresponding control signals to the electric heating furnace, thereby achieving intelligent control of the electric heating furnace. This reduces the steps of traditional manual button, knob, or touch operation and improves the convenience of equipment operation.

Description

Technical Field

[0001] This invention relates to the field of intelligent control, specifically to a voice-controlled intelligent control system for a heating furnace and an electric heating furnace. Background Technology

[0002] Electric heating furnaces are widely used in catering processing, food preparation, and other heating scenarios, especially in restaurants, canteens, and central kitchens. These furnaces typically require frequent start-up and shutdown control, heat adjustment, and timer control to meet the needs of different processing steps and work rhythms. Most existing electric heating furnaces are operated using buttons, knobs, or touch panels, requiring operators to be close to the equipment and manually input control commands one by one, making the operation process relatively cumbersome.

[0003] In practical applications, especially in kitchen environments, operators are often engaged in continuous cooking, moving ingredients, or using both hands. Frequent use of manual control not only affects operational efficiency but can also lead to inconvenience due to wet or oily hands or a hectic work pace. Particularly in scenarios with multiple stoves operating simultaneously, operators need to switch between controlling multiple devices, and traditional manual control methods are insufficient to meet the demands for high efficiency and convenience.

[0004] With the development of intelligent control technology, voice interaction is gradually being applied to the control of home appliances and equipment. Inputting commands via voice can reduce the burden of manual operation to a certain extent and improve the convenience of equipment control. However, most existing voice control solutions are designed for ordinary home appliance scenarios and can usually only achieve simple voice on / off control. They lack command parsing and execution mechanisms that match the actual control logic of electric heating furnaces, making it difficult to meet the application needs of electric heating furnaces in terms of power on / off, heat adjustment, and timer control.

[0005] Therefore, it is necessary to provide a voice-controlled intelligent control system for heating furnaces to solve the problems of existing electric heating furnaces that mainly rely on manual operation, have a single control method, and lack ease of operation. Summary of the Invention

[0006] According to embodiments of the present invention, a voice-controlled intelligent control system for a heating furnace and an electric heating furnace with electric combustion are provided. These systems are used to solve the technical problems existing in the background art described above.

[0007] In a first aspect of the present invention, a voice-controlled intelligent control system for a heating furnace is provided.

[0008] The intelligent voice control system for the heating furnace includes a voice acquisition module, a voice recognition module, a command parsing module, and an execution control module. The voice acquisition module is used to acquire user voice commands, and the output end of the voice acquisition module is connected to the input end of the voice recognition module. The voice acquisition module transmits the user voice commands to the voice recognition module. The speech recognition module is used to convert the speech command into text information, and the output end of the speech recognition module is connected to the input end of the command parsing module. The speech recognition module transmits the text information to the command parsing module. The instruction parsing module is used to determine control instructions based on the text information, and the output of the instruction parsing module is connected to the input of the execution control module. The instruction parsing module transmits the control instructions to the execution control module. The execution control module is connected to the instruction parsing module. The execution control module is used to perform corresponding control actions on the electric heating furnace according to the control instructions. The execution control module is electrically and communicatively connected to the control unit of the electric heating furnace. The execution control module outputs corresponding control signals to the electric heating furnace.

[0009] Preferably, the control command includes any one of power on, power off, power increase, power decrease, or timed shutdown; It also includes a wake-up module, which is used to detect a preset wake-up word; The input terminal of the wake-up module is connected to the output terminal of the voice acquisition module and the input terminal of the voice recognition module, and is used to acquire the voice signal to be detected. The output of the wake-up module is connected to the control terminal of the speech recognition module. After detecting the preset wake-up word, the wake-up module triggers the speech recognition module to recognize subsequent speech commands.

[0010] Preferably, it further includes a signal preprocessing module, which is used to perform at least one preprocessing on the voice command, the preprocessing including any one or more of noise suppression, echo cancellation, and voice activity detection; The input terminal of the signal preprocessing module is connected to the output terminal of the voice acquisition module, and the signal preprocessing module is able to acquire the voice command; The output of the signal preprocessing module is connected to the input of the speech recognition module, and the signal preprocessing module outputs the preprocessed speech signal to the speech recognition module.

[0011] Preferably, the instruction parsing module is used to match the text information with a preset instruction set, and the instruction parsing module determines the control instruction and its parameters; The parameters include firepower level parameters and timing parameters; The control commands also include selection information for the target electric heater or associated information that can be used to determine the target electric heater; The preset instruction set is stored in the instruction parsing module and a storage module connected to the instruction parsing module. The output of the instruction parsing module is used to output the control instruction containing the parameters and relevant information about the target electric heating furnace to the execution control module.

[0012] Preferably, it also includes a gating decision module, which is connected to the speech recognition module and the instruction parsing module, and the gating decision module is used to generate a gating result based on the recognition reliability; The gating result includes any one of allowing execution, denying execution, or triggering confirmation; The execution control module is configured to output the control command only when the gating result is "execution allowed", or to output the control command after the gating result is "trigger confirmation" and "confirmation completed". The input terminal of the gate control decision module is connected to the output terminal of the speech recognition module and the output terminal of the instruction parsing module. The gate control decision module is able to acquire the text information and the control instructions and their parameters. The output terminal of the gating decision module is connected to the control terminal of the execution control module, and the gating decision module outputs the gating result to the execution control module; Upon receiving the gating result, the execution control module selectively executes or disables the execution of the control command.

[0013] Preferably, the recognition reliability includes noise level and speech recognition confidence level; The gating decision module is used to adopt differentiated gating strategies for different control commands based on the noise level and voice recognition confidence in the noisy environment of a restaurant kitchen. When the noise level exceeds the first threshold and the speech recognition confidence is lower than the second threshold, the power-on and power-up actions are rejected or triggered for confirmation, while the power-off and power-down actions are allowed to be executed or triggered for confirmation. It also includes a noise assessment module, the input of which is connected to the output of the speech acquisition module and the output of the signal preprocessing module, and the noise assessment module is capable of acquiring speech signals for assessment; The output of the noise assessment module is connected to the gating decision module, and the noise assessment module can output the noise level. The output of the speech recognition module is connected to the gating decision module, and the speech recognition module can output the speech recognition confidence level.

[0014] Preferably, it also includes a location determination module and an identity verification module; The location determination module is used to output the sound source location confidence score based on the speech signal. The sound source location confidence score is used to characterize the degree of matching between the speaker's location and the sound receiving location of at least one electric heating furnace. The identity authentication module is used to output operator identity information or operator identity confidence level based on voice signals; The gate control decision module is used to determine the target electric heating furnace based on the confidence level of the sound source location and the operator's identity information, and to perform authorization verification based on a preset permission mapping relationship. The gate control decision module enables different chefs to have differentiated control permissions for electric heating furnaces corresponding to different stove positions or different kitchen utensils. The input terminal of the position determination module is connected to the output terminal of the voice acquisition module and the output terminal of the signal preprocessing module, and the output terminal of the position determination module is connected to the gating decision module. The input terminal of the identity authentication module is connected to the output terminal of the voice acquisition module and the output terminal of the signal preprocessing module, and the output terminal of the identity authentication module is connected to the gating decision module. The permission mapping relationship is stored in the gate control decision module and the permission management module connected to the gate control decision module, and the permission management module is connected to the gate control decision module.

[0015] Preferably, the execution control module is configured to output a combined control quantity when it receives a control command to increase or decrease firepower, the combined control quantity including an arc power control quantity and an intake-related control quantity; The control quantities related to air intake include the effective opening degree control quantity of the air intake and the swirl intensity control quantity; The effective opening control of the air inlet is used to adjust the amount of air entering the arc zone by changing the effective opening area of ​​the air inlet when the fan power is constant, so that the amount of air entering the arc zone is matched with the change of arc power. The swirl intensity control is achieved by switching different guide hole groups with different guide angles. The guide hole groups are set in multiple groups along the tube axis and each group has a different guide angle. The execution control module is used to select the corresponding air guide hole group as the working air guide hole group according to the range of arc power. The execution control module can obtain the matching swirl intensity under different arc power and maintain arc stability and jet morphology stability. The output of the execution control module is connected to the arc power adjustment unit, the air inlet opening adjustment mechanism and the air guide hole group switching mechanism, respectively. The execution control module can output the arc power control quantity, the effective air inlet opening control quantity and the swirl intensity control quantity. The arc power adjustment unit, the air inlet opening adjustment mechanism, and the air guide hole group switching mechanism are respectively connected to the control unit of the electric heating furnace or integrated by the control unit of the electric heating furnace.

[0016] In a second aspect of the invention, an electric heating furnace is provided.

[0017] Includes a housing, interaction unit, support frame, heating unit, and auxiliary mechanisms; The interactive unit is connected to the housing, the support frame is disposed on the housing, and the heating unit includes a mounting plate, a housing, multiple tapered tubes, a base plate, multiple electrode mounting assemblies, multiple arc generating assemblies, an air inlet, and a connecting pipe. The auxiliary mechanism also includes multiple inner shells, multiple tubes, and multiple connecting tubes; The tube body is provided with multiple holes; The base plate is connected to the outer shell, and multiple tapered tubes are connected to the outer shell. Multiple inner shells are connected to the outer shell, and the multiple inner shells are connected to each other through connecting tubes. The connecting tubes are connected to the connecting pipes, and the connecting pipes are connected to the air inlet. The base plate is connected to the mounting plate, and multiple electrode mounting assemblies are provided on the mounting plate. The multiple electrode mounting assemblies are respectively connected to multiple arc generating assemblies, and the generating ends of the multiple arc generating assemblies are located inside the tapered tubes.

[0018] Preferably, the outlines of the plurality of holes are arc-shaped; The plurality of tapered tubes and the plurality of inner shells are divided into two groups and the two groups are distributed in a concentric circle. The number of connecting tubes is at least two and is divided into two groups. The two groups of connecting tubes respectively introduce gas into the two groups of inner shells.

[0019] One or more technical solutions provided in this application have at least the following technical effects or advantages: This invention provides a voice-controlled intelligent control system for a heating furnace and an electric heating furnace with electric fire generation: Firstly, by setting up a voice acquisition module, a voice recognition module, an instruction parsing module, and an execution control module, this invention enables users to input control commands to the electric heating furnace via voice, and the execution control module outputs the corresponding control signals to the electric heating furnace, thereby realizing intelligent control of the electric heating furnace, reducing the steps of traditional manual button, knob, or touch operation, and improving the convenience of equipment operation.

[0020] Secondly, this invention converts voice commands into text information through a voice recognition module, and then the command parsing module parses the text information and determines the control commands, so that the voice input content can be converted into executable device control commands, thereby improving the automation level of the control process and facilitating the realization of various operation functions such as power-on, power-off, firepower adjustment and timer control.

[0021] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0022] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 A system flowchart of a voice-controlled intelligent control system for a heating furnace according to an embodiment of the present invention is shown; Figure 2 A three-dimensional connection structure diagram of an electric furnace for generating fire according to an embodiment of the present invention is shown; Figure 3 An exploded view of an electric furnace for generating electricity according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the connection structure between the mounting plate and the outer casing of an electric furnace for electric heating according to an embodiment of the present invention is shown; Figure 5 A partial exploded view of an electric furnace for generating electricity according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of the connection structure between the outer shell and the electrode mounting assembly of an electric furnace for electric heating according to an embodiment of the present invention is shown. Figure 7 A schematic diagram of the connection structure of the electric push rod and connecting rod of an electric furnace for electric fire generation according to an embodiment of the present invention is shown. Figure 8 A schematic diagram of the connection structure of the inner shell and connecting pipe of an electric furnace for electric heating according to an embodiment of the present invention is shown; Figure 9 An electric heating furnace according to an embodiment of the present invention is shown. Figure 7 A partial schematic diagram; Figure 10 An electric furnace for starting fires according to an embodiment of the present invention is shown. Figure 8 A partial schematic diagram; Figure 11 An exploded view of the heating unit of an electric furnace according to an embodiment of the present invention is shown; Figure 12 A schematic diagram of a partial connection structure of the regulating assembly of an electric furnace for electric fire generation according to an embodiment of the present invention is shown; Figure 13 A schematic diagram of the tube connection structure of an electric furnace according to an embodiment of the present invention is shown; Figure 14 A cross-sectional view of the tube body of an electric furnace according to an embodiment of the present invention is shown; Figure 15 A partial cross-sectional view of the heating unit of an electric furnace according to an embodiment of the present invention is shown; Figure 16 A three-dimensional connection structure diagram of the adjustment assembly of an electric heating furnace according to an embodiment of the present invention is shown.

[0023] The attached figures are labeled as follows: 1-Shell, 2-Interactive unit, 3-Support frame, 4-Heating unit, 41-Mounting plate, 42-Outer shell, 43-Electrode mounting assembly, 44-Conical tube, 45-Straight cylinder, 46-Component, 47-Base plate, 48-Air inlet, 49-Connecting pipe, 5-Auxiliary mechanism, 51-Electric push rod, 52-Connecting rod, 53-Connecting frame, 54-First arc-shaped baffle, 55-Annular baffle, 56-Tube body, 561-Hole body, 57-Inner shell, 58-Connecting pipe, 6-Adjusting assembly, 61-Sliding plate, 610-Indicator rod, 611-Second protrusion, 62-Annular seat, 63-First protrusion, 64-Spring, 65-Slide rod, 66-Second arc-shaped baffle, 67-Column, 68-Screw, 69-Stop block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Furthermore, the term "and" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the related objects are in an "or" relationship.

[0026] like Figure 1As shown, a voice-controlled intelligent control system for heating furnaces is provided. This system is mainly used in electric arc heating furnaces and is used to achieve safe, accurate and differentiated control of electric arc heating furnaces through voice in high-noise operating environments such as kitchens, especially restaurant kitchens.

[0027] The intelligent voice control system for the heating furnace includes a voice acquisition module, a signal preprocessing module, a wake-up module, a voice recognition module, a command parsing module, a noise assessment module, a position determination module, an identity authentication module, a gate control decision module, a confirmation interaction module, and an execution control module; in some embodiments, it also includes a storage module and an access control module.

[0028] The voice acquisition module is used to collect voice commands issued by the operator. The output of the voice acquisition module is connected to the inputs of the signal preprocessing module, wake-up module, location determination module, identity verification module, and noise assessment module, respectively, to provide the collected raw voice signals to these modules for subsequent processing. The voice acquisition module may include a pickup unit corresponding to at least one electric arc heating furnace, or it may include at least two spaced microphone arrays. Preferably, pickup units are respectively set at multiple stove positions, or multiple microphones are set at the top of the kitchen, in front of the stove, or on the equipment bracket, to obtain better sound reception and provide a basis for subsequent sound source location determination.

[0029] The signal preprocessing module is used to preprocess the speech signal output by the speech acquisition module. Preprocessing can include any one or more of noise suppression, echo cancellation, and speech activity detection. The input of the signal preprocessing module is connected to the output of the speech acquisition module, and the output of the signal preprocessing module is connected to the speech recognition module, location determination module, identity authentication module, and noise assessment module to output the preprocessed speech signal. In a kitchen environment, the sounds of range hoods, fans, clinking tableware, and conversations can significantly interfere with speech recognition. By using the signal preprocessing module to perform noise reduction, echo cancellation, and speech segment detection on the speech signal, the accuracy of subsequent recognition and judgment can be improved.

[0030] The wake-up module is used to detect a preset wake-up word. The input of the wake-up module is connected to the output of the voice acquisition module or the input of the voice recognition module to acquire the voice signal to be detected; the output of the wake-up module is connected to the control terminal of the voice recognition module. When the wake-up module detects the preset wake-up word, it triggers the voice recognition module to enter command recognition mode and recognize subsequent voice content. The preset wake-up word can be set according to the application scenario, such as "start control" or "furnace number one". By setting the wake-up module, the misidentification of non-control voice as control commands can be reduced.

[0031] The speech recognition module converts speech signals into text information. Its input is connected to the output of the signal preprocessing module, and its output is connected to both the instruction parsing module and the gating decision module. In addition to outputting the recognized text, the speech recognition module also outputs a speech recognition confidence score, which characterizes the reliability of the speech recognition result. The speech recognition confidence score can be directly output by the speech recognition model or calculated based on the distribution differences between candidate results.

[0032] The instruction parsing module performs semantic parsing on text information to determine control instructions and their parameters. The input of the instruction parsing module is connected to the output of the speech recognition module, and its output is connected to both the gating decision module and the execution control module. The instruction parsing module matches the text information with a preset instruction set to determine the corresponding control instruction. Control instructions can include any one of the following: power on, power off, increase firepower, decrease firepower, or timed shutdown; parameters can include firepower level parameters and timer parameters. Furthermore, the control instructions can also include selection information for the target electric arc heater, or associated information that can be used to determine the target electric arc heater, such as "left furnace," "furnace number one," or "my stove position." The preset instruction set can be stored internally within the instruction parsing module or in a storage module connected to the instruction parsing module. After parsing, the instruction parsing module outputs control instructions containing the control type, parameter content, and target electric arc heater information to the gating decision module and the execution control module.

[0033] The noise assessment module evaluates the noise level of the current voice interaction environment and outputs the noise level. The input of the noise assessment module is connected to the output of the voice acquisition module and the signal preprocessing module, enabling environmental noise analysis based on the raw and / or preprocessed voice signals. The noise level can be determined using background noise energy, signal-to-noise ratio, frequency band energy distribution, or other parameters characterizing the strength of environmental noise. The output of the noise assessment module is connected to the gating decision module to provide noise level information to it.

[0034] The location determination module is used to determine the degree of matching between the speaker's location and at least one arc heater based on the speech signal, and outputs the sound source location confidence score. The input of the location determination module is connected to the output of the speech acquisition module and the signal preprocessing module, and the output of the location determination module is connected to the gating decision module. Specifically, the location determination module can determine which stove or arc heater the speaker is closer to based on the sound intensity difference, time of arrival difference, phase difference, or beamforming results between the speech signals acquired by multiple pickup units or multiple microphones, and output the corresponding sound source location confidence score. The higher the sound source location confidence score, the higher the degree of matching between the current speech and a target arc heater.

[0035] The identity authentication module is used to identify the operator and output operator identity information or operator identity confidence level. The input of the identity authentication module is connected to the output of the voice acquisition module and the signal preprocessing module, while the output is connected to the gating decision module. The identity authentication module can use voiceprint recognition to identify the operator based on the voice characteristics of different chefs; alternatively, it can combine this with a pre-recorded operator information database to output the operator identity confidence level. By setting up the identity authentication module, differentiated access control can be achieved for different operators using different stove positions or electric arc heating furnaces corresponding to different kitchen utensils.

[0036] The gating decision module generates gating results based on information from multiple dimensions. It connects to the speech recognition module, command parsing module, noise assessment module, location determination module, identity authentication module, confirmation interaction module, execution control module, and access control module. The input of the gating decision module is connected to the outputs of the speech recognition module and the command parsing module, enabling it to acquire text information, control commands, and parameters. It can also acquire noise level, speech recognition confidence score, sound source location confidence score, and operator identity information or operator identity confidence score. Based on one or more of the above information, the gating decision module generates a gating result, which may include allowing execution, denying execution, or triggering confirmation. The output of the gating decision module is connected to the control terminal of the execution control module, used to output the gating result to the execution control module.

[0037] Furthermore, the gate control decision module determines the target electric arc heater based on the confidence level of the sound source location and the operator's identity information, and performs authorization verification based on a preset permission mapping relationship. The permission mapping relationship can be stored internally within the gate control decision module or in a permission management module connected to the gate control decision module. The permission mapping relationship represents the control permissions that different operators have for electric arc heaters corresponding to different stove positions or different kitchen utensils. For example, the first chef only has the permission to adjust the heat of the electric arc heater corresponding to stove position one, but not the permission to turn on the electric arc heater corresponding to stove position two. Through permission management, the risk of misoperation or unauthorized operation in a multi-person work environment can be reduced.

[0038] Furthermore, when the text information contains explicit selection information for the target electric arc heater, the instruction parsing module can directly determine the target electric arc heater based on this selection information. When the text information does not contain explicit selection information for the target electric arc heater, the gating decision module can determine the target electric arc heater based on the sound source location confidence level, operator identity information, and preset associations. Preset associations could be, for example, "a certain operator typically corresponds to a certain stove position" or "a certain sound pickup area preferentially corresponds to a certain electric arc heater," etc.

[0039] Furthermore, the gating decision module can also employ differentiated gating strategies for different control commands. Recognition reliability includes at least noise level and voice recognition confidence. In noisy environments such as restaurant kitchens, when the noise level exceeds a first threshold and the voice recognition confidence is below a second threshold, for power-on and power-up commands, the gating decision module outputs "reject execution" or "trigger confirmation" to avoid safety risks caused by accidental equipment activation or power increase. For power-off and power-down commands, the gating decision module can output "allow execution" or "trigger confirmation" to prioritize meeting safe power reduction or shutdown requirements. In other words, under high noise and low confidence conditions, the system adopts a stricter gating strategy for higher-risk commands and a more lenient gating strategy for lower-risk or safety-friendly commands.

[0040] Furthermore, when overlapping speech, multiple candidate target electric arc heaters, authorization result conflicts, or recognition result conflicts are detected, the gating decision module can output either "refuse execution" or "trigger confirmation." Overlapping speech refers to multiple operators speaking simultaneously, resulting in a non-unique speech source; multiple candidate target electric arc heaters refers to location determination results or text parsing results pointing to two or more target devices simultaneously; authorization result conflicts refer to inconsistencies between identity recognition results and permission mapping relationships; and recognition result conflicts refer to inconsistencies between the speech recognition text and the parsed control semantics, or the existence of multiple highly similar candidate commands. In these cases, refusing execution or requiring secondary confirmation can further enhance the system's security and reliability.

[0041] For timed shutdown commands, the gating decision module can also output a gating result that allows execution or triggers confirmation based on the timer duration, the current operating status, and / or the operator's permissions. For example, if the timer duration is too long, the current device is operating at high power, or the current operator's permissions are insufficient, the gating decision module can trigger confirmation; if the timer duration is within a preset safety range and the operator has the corresponding permissions, then execution is allowed.

[0042] The confirmation interaction module is connected to both the gating decision module and the execution control module. When the gating decision module outputs a trigger confirmation result, the confirmation interaction module receives the operator's confirmation information and, after successful confirmation, outputs the confirmation result to the execution control module, enabling the execution control module to execute the corresponding control command. The confirmation information can be any one of the following: secondary voice confirmation, button confirmation, or touch confirmation. For example, when the system recognizes "increase firepower" but the current ambient noise is high, it can prompt the operator to confirm again via voice broadcast or display interface. The operator can say "confirm execution" or complete the confirmation via button or touch.

[0043] The execution control module is used to perform corresponding control actions on the electric arc furnace according to control commands. The execution control module is connected to the command parsing module, as well as the gating decision module and the confirmation interaction module; it is also electrically and communicatively connected to the control unit of the electric furnace. Upon receiving a control command, the execution control module does not execute it immediately. Instead, it first determines whether to execute based on the gating result output by the gating decision module. Only when the gating result indicates that execution is allowed, or when the gating result indicates that confirmation has been triggered and completed, does the execution control module output the corresponding control signal to the electric furnace. When the gating result indicates that execution is denied, the execution control module prohibits the execution of the corresponding control command.

[0044] Furthermore, when the execution control module receives a control command to increase or decrease the firepower, it outputs a combined control quantity. This combined control quantity includes arc power control and air intake-related control quantities. Air intake-related control quantities include effective inlet opening control and swirl intensity control. The arc power control quantity is used to adjust the arc output power of the electric arc furnace; the effective inlet opening control quantity is used to adjust the air intake volume entering the arc zone by changing the effective opening area of ​​the inlet when the fan power is constant, thus matching the air intake volume with changes in arc power; the swirl intensity control quantity is used to change the degree of rotation of the airflow entering the arc zone by switching air guide hole groups with different guide angles, thus adapting the airflow pattern under different power ranges to the arc state.

[0045] Specifically, the output of the execution control module is connected to the arc power adjustment unit, the air inlet opening adjustment mechanism, and the air guide hole group switching mechanism, respectively. Based on the preset power range and air inlet parameter mapping relationship, the execution control module determines the arc power control quantity, the effective air inlet opening control quantity, and the swirl intensity control quantity corresponding to the current firepower adjustment command, and sends them to the arc power adjustment unit, the air inlet opening adjustment mechanism, and the air guide hole group switching mechanism, respectively. The arc power adjustment unit, the air inlet opening adjustment mechanism, and the air guide hole group switching mechanism are each connected to the control unit of the electric heating furnace, or integrated into the control unit of the electric heating furnace.

[0046] In one embodiment, multiple groups of air guide holes are arranged along the axial direction of the pipe body, and the guide angles of each group of air guide holes are different. The execution control module selects the corresponding air guide hole group as the working air guide hole group according to the arc power range. For example, when the arc power is in a lower range, the air guide hole group with a smaller guide angle is selected to obtain a relatively weaker swirling intensity; when the arc power is in a higher range, the air guide hole group with a larger guide angle is selected to obtain a relatively stronger swirling intensity. At the same time, the execution control module also adjusts the effective opening of the air inlet to match the total air intake into the arc zone with the current arc power. Through the above coordination, the arc power, air intake, and swirling intensity under different firepower states can be correlated, thereby improving the stability and consistency of the adjustment process.

[0047] In practical use, the operator first issues a preset wake-up word. After the voice acquisition module collects the voice signal, it sends the voice signal to the wake-up module, signal preprocessing module, noise assessment module, location determination module, and identity authentication module. Upon detecting the preset wake-up word, the wake-up module triggers the voice recognition module to enter command recognition mode. Subsequently, the signal preprocessing module performs noise suppression, echo cancellation, and / or voice activity detection on the voice signal before sending the preprocessed voice signal to the voice recognition module. The voice recognition module converts the voice command into text information and outputs the voice recognition confidence score. The command parsing module parses the text information to determine the control command, parameters, and target electric arc furnace selection information or related information. Simultaneously, the noise assessment module outputs the noise level, the location determination module outputs the sound source location confidence score, and the identity authentication module outputs the operator's identity information or operator identity confidence score. The gating decision module integrates the above information to generate the gating result.

[0048] When the gate control result is "execution allowed", the execution control module directly outputs the corresponding control signal to the electric arc heating furnace; when the gate control result is "trigger confirmation", the confirmation interaction module receives the operator's confirmation information, and after the confirmation is passed, the execution control module outputs the corresponding control signal; when the gate control result is "execution denied", the execution control module does not output a control signal, thereby avoiding malfunction.

[0049] For example, when the operator issues the voice command "turn on furnace number one", if the current ambient noise is low, the voice recognition confidence is high, the sound source location matches furnace number one, and the operator has the power-on authority for furnace number one, the gate control decision module outputs permission to execute, and the execution control module outputs a power-on control signal to the control unit of the electric arc heating furnace; if the current ambient noise is high and the recognition confidence is low, the gate control decision module can output a trigger confirmation or refuse execution to reduce the risk of accidental opening.

[0050] For example, when the operator issues the voice command "increase firepower," if the target electric arc heater is not explicitly specified in the text, the gate control decision module determines the target electric arc heater based on the confidence level of the sound source location, the operator's identity information, and preset correlations. After determining the target equipment, the execution control module not only increases the output of the corresponding electric arc power adjustment unit, but also simultaneously adjusts the air inlet opening adjustment mechanism and the air guide hole group switching mechanism to output the corresponding electric arc power control quantity, air inlet effective opening control quantity, and swirl intensity control quantity, thereby completing the joint adjustment of firepower.

[0051] For example, when the operator issues a voice command to "turn off in ten minutes", the command parsing module parses out the timed shutdown command and timing parameters; the gate control decision module then determines whether to allow execution or trigger confirmation based on the timing duration, the current working status of the equipment and the operator's permissions; when the execution conditions are met, the execution control module sends the corresponding timed shutdown parameters to the electric arc heating furnace control unit to achieve delayed shutdown control.

[0052] In summary, the voice-controlled intelligent control system for the electric arc heating furnace in this embodiment, by setting up a voice acquisition module, a wake-up module, a signal preprocessing module, a voice recognition module, a command parsing module, a noise assessment module, a location determination module, an identity authentication module, a gate control decision module, a confirmation interaction module, and an execution control module, enables the system to not only realize voice-controlled power on / off, firepower adjustment, and timer control of the electric arc heating furnace, but also to differentiate gate control for different commands based on factors such as the noisy kitchen environment, operator location, operator identity, and permission relationships, thereby improving the safety, accuracy, and applicability of voice control.

[0053] like Figures 2 to 16In addition, another embodiment of the present invention provides an electric heating furnace, including a shell 1, an interaction unit 2, a support frame 3, a heating unit 4, and an auxiliary mechanism 5; the interaction unit 2 includes a speaker, a microphone, and other structures, enabling human-computer interaction using the above system; the support frame 3 is connected to the shell 1 and is used to place cookware; the heating unit 4 is disposed inside the lower part of the support frame 3 to heat the cookware; the interaction unit 2 is connected to the shell 1 to receive user voice commands and output prompt information; the heating unit 4 includes a mounting plate 41, a shell 42, multiple tapered tubes 44, a base plate 47, multiple electrode mounting assemblies 43, multiple arc generating assemblies 46, and an air inlet 4. 8 and connecting pipe 49; the auxiliary mechanism 5 also includes multiple inner shells 57, multiple pipe bodies 56 and multiple connecting pipes 58; multiple holes 561 are provided on the pipe body 56; the base plate 47 is connected to the outer shell 42, multiple tapered pipes 44 are connected to the outer shell 42, multiple inner shells 57 are connected to the outer shell 42, the multiple inner shells 57 are connected to each other through connecting pipes 58, the connecting pipes 58 are connected to the connecting pipes 49, the connecting pipes 49 are connected to the air inlet 48, the base plate 47 is connected to the mounting plate 41, multiple electrode mounting assemblies 43 are provided on the mounting plate 41, the multiple electrode mounting assemblies 43 are respectively connected to multiple arc generating assemblies 46, and the generating ends of the multiple arc generating assemblies 46 are set in the tapered pipes 44. The outlines of the multiple orifices 561 are arc-shaped; the multiple conical tubes 44 and the multiple inner shells 57 are divided into two groups and the two groups are distributed in the same circle; the number of connecting tubes 49 is at least two and divided into two groups; the two groups of connecting tubes 49 respectively introduce gas into the two groups of inner shells 57; a ceramic straight cylinder 45 is also provided on the outer wall of the conical tube 44; the straight cylinder 45 can make the heat generated by the electric heating furnace more concentrated and improve the heating effect.

[0054] In this embodiment, two sets of multiple holes 561 are provided on the outer wall of the tube 56. The two sets of holes 561 have different curvatures, so that the gas entering the tube 56 through the holes 561 obtains different tangential components, thereby forming swirling airflows of different intensities. When adjusting the power of the arc generating component 46 in the electric heating furnace, the control system matches the arc power with the swirling intensity: when the arc generating component 46 is in a low power / low temperature operating state, the group of holes 561 with a smaller arc is selected as the working hole group, so that the airflow guide angle α is in the range of 15°–25°, in order to form a weak to medium swirling flow, which ensures that the arc is stably centered and avoids excessive airflow blowing that causes the arc to elongate or oscillate; when the arc generating component 46 is in a high power / high temperature operating state, the group of holes 561 with a larger arc is selected as the working hole group, so that the airflow guide angle α is in the range of 40°–55°, in order to form a medium to strong swirling flow, thereby enhancing the arc column constraint and forming a more stable gas film protection near the nozzle, reducing the risk of arc adhesion to the wall and nozzle / electrode ablation, and making the plasma jet morphology more stable.

[0055] Furthermore, the auxiliary mechanism 5 also includes an electric push rod 51, a connecting rod 52, a connecting frame 53, a first arc-shaped baffle 54, and an annular baffle 55; The drive end of the electric push rod 51 is connected to the connecting rod 52, and the connecting rod 52 is connected to the connecting frame 53. The connecting frame 53 is connected to multiple first arc-shaped baffles 54, and the multiple first arc-shaped baffles 54 are slidably connected to the outer wall of the corresponding inner shell 57. Each inner shell 57 is provided with a sliding groove, and the connecting frame 53 can slide in the sliding groove. At the same time, no matter how the connecting frame 53 slides, the first arc-shaped baffle 54 can always cover the sliding groove. Furthermore, the connecting frame 53 is connected to the annular baffle 55, and the annular baffle 55 is slidably connected to the outer wall of the tube 56. During the movement, it can selectively cover a certain group of holes 561.

[0056] In actual use, when the operator needs to use the electric heater for cooking, he can first send a start command to the control system through the interaction unit 2. After the control system recognizes the start command, it activates the corresponding arc generating component 46, so that an arc is generated between the electrodes installed on the electrode mounting component 43, thereby forming a high-temperature plasma arc column inside the conical tube 44, and the generated heat is concentrated and guided to the bottom of the pot above the support frame 3 through the straight cylinder 45 to heat the pot.

[0057] Simultaneously, an external air pump delivers air, which enters through the air inlet 48 and then through the connecting pipe 49 into the interior of multiple inner shells 57. Subsequently, the air enters the area surrounding the conical tube 44 through the holes 561 on the tube body 56, forming a swirling airflow. When the control system detects that the current arc generating component 46 is in a low-power operating state, it controls the electric push rod 51 to the first position, causing the annular baffle 55 to block the group of holes 561 with larger curvatures, leaving only the group of holes 561 with smaller curvatures open. At this time, the airflow guide angle entering the tube body 56 is small, forming a weaker swirling airflow to ensure that the arc can be stably centered and will not be blown off course by the airflow.

[0058] When the operator increases the firepower via voice command, the control system correspondingly increases the working power of the arc generating component 46 and simultaneously drives the electric push rod 51 to extend and retract, causing the connecting rod 52 to move the connecting frame 53. This, in turn, causes the annular baffle 55 to slide along the outer wall of the tube body 56, opening the larger arc-shaped orifice 561 group and allowing it to participate in air intake. At this time, the airflow gains a larger tangential velocity component after entering the tube body 56, thus forming a stronger swirling airflow. This stronger swirling airflow can exert a stronger constraint on the arc and form a stable gas film protective layer at the nozzle of the conical tube 44, thereby reducing the risk of arc adhesion to the wall and electrode ablation. At the same time, it makes the high-temperature jet shape more stable and improves the overall heating efficiency.

[0059] Furthermore, the auxiliary mechanism 5 also includes an electric push rod 51, a connecting rod 52, a connecting frame 53, a first arc-shaped baffle 54, and an annular baffle 55; The drive end of the electric push rod 51 is connected to the connecting rod 52, and the connecting rod 52 is connected to the connecting frame 53. The connecting frame 53 is connected to multiple first arc-shaped baffles 54, and the multiple first arc-shaped baffles 54 are slidably connected to the outer wall of the corresponding inner shell 57. Each inner shell 57 is provided with a sliding groove, and the connecting frame 53 can slide in the sliding groove. At the same time, no matter how the connecting frame 53 slides, the first arc-shaped baffle 54 can always cover the sliding groove. Furthermore, the connecting frame 53 is connected to the annular baffle 55, and the annular baffle 55 is slidably connected to the outer wall of the tube 56. During the movement, it can selectively cover a part of a certain group of holes 561.

[0060] In this embodiment, an adjustment component 6 is also included. The adjustment component 6 includes a sliding plate 61, an annular seat 62, a first protrusion 63, a spring 64, a slide rod 65, a second arc-shaped baffle 66, a column 67, a screw 68, a stop block 69, an indicator rod 610, and a second protrusion 611. The sliding plate 61 is slidably connected to the annular seat 62, and the outer walls of both the sliding plate 61 and the annular seat 62 are in contact with the inner wall of the air inlet 48. At the same time, it can selectively block the connecting pipes 49, which are divided into two groups. It is worth noting that the connecting pipes 49 penetrate the air inlet. The opening 48 is exposed, and the sliding plate 61 and the annular seat 62 can cover part of the opening to adjust the air intake. The first protrusion 63 is connected to the sliding plate 61 and the sliding rod 65. The sliding rod 65 is slidably connected to the annular seat 62. The spring 64 is sleeved on the sliding rod 65, and the two ends of the spring 64 are connected to the first protrusion 63 and the annular seat 62 respectively. Except for the column 67, the adjustment component 6 has two structures, which correspond to the openings of the air intake 48 through the two sets of connecting pipes 49 respectively. The two annular seats 62 are connected by a column 67, which is connected to a connecting rod 52. A groove is provided on the side wall of the air inlet 48. The outer wall of the connecting rod 52 is connected to the second arc-shaped baffle 66. The inner side of the second arc-shaped baffle 66 is slidably connected to the outer side of the air inlet 48. During the sliding process, the second arc-shaped baffle 66 can always block the groove on the side of the air inlet 48 to prevent leakage. During the start-up process, the electric push rod 51 can simultaneously drive the annular baffle 55 and the annular seat 62 to rise and fall.

[0061] In actual use, when the arc power is increased and the air intake needs to be increased, the control system drives the connecting rod 52 to move via the electric push rod 51. The connecting rod 52 drives the column 67 and the ring seat 62 to move as a whole, reducing the blocking area between the sliding plate 61 and the opening of the connecting pipe 49, thereby increasing the amount of air entering the inner shell 57. When the power needs to be reduced, the electric push rod 51 moves in the opposite direction, causing the sliding plate 61 to block part of the opening of the connecting pipe 49 again, thereby reducing the air intake and keeping the airflow entering the arc area matched with the arc power, without the need to adjust the power of the air pump.

[0062] In this embodiment, since the sliding plate 61 and the annular seat 62 can move relative to each other, the user can limit the minimum opening range that can block the openings on a certain set of connecting pipes 49 as needed. Specifically, the screw 68 is threadedly connected to the stop block 69, the stop block 69 is attached to and slidably connected to the inner wall of the air inlet 48, and the stop block 69 can only move linearly when the screw 68 rotates. The screw 68 is threadedly connected to the second protrusion 611, and the second protrusion 611 is connected to the inner wall of the air inlet 48. The stop block 69 can contact the sliding plate 61, and cause relative movement between the sliding plate 61 and the annular seat 62. After rotating the screw 68, the position of the stop block 69 can be changed, thereby realizing the minimum opening range that the sliding plate 61 can block the corresponding opening.

[0063] A cross-shaped hole is provided at one end of the screw 68 to facilitate screwdriver operation. An indicator rod 610 is also provided to allow users to easily observe the adjustment range during adjustment. The indicator rod 610 is slidably connected to the second protrusion 611. The indicator rod 610 has graduations and is connected to the stop block 69. The indicator rod 610 passes through the second protrusion 611, allowing users to observe the position of the graduations on the indicator rod 610 on the second protrusion 611 to determine the specific adjustment distance. The stop block 69 prevents the corresponding opening from being obstructed too much, allowing users to adjust it as needed before installation, creating a difference in airflow distribution between the outer and inner conical tubes 44.

[0064] In practical use, the operator can issue voice commands through the interactive unit 2 according to cooking needs. After recognizing the voice commands, the control system adjusts the working power of the arc generating component 46, and simultaneously controls the electric push rod 51 to drive the auxiliary mechanism 5 and the adjustment component 6, thereby changing the swirling intensity and air intake. This ensures that the arc power, air flow, and swirling intensity are matched, maintaining a stable arc shape and stable heat output under different power operating conditions, thus improving the overall heating efficiency and operational stability of the electric heater. By setting a threaded adjustment structure between the screw 68 and the stop 69, the stop 69 can change the limiting position of the sliding plate 61, thereby limiting the minimum opening range of the connecting pipe 49 opening, preventing the air intake from being excessively blocked and resulting in insufficient air intake, thus ensuring the stability of the airflow in the arc area. At the same time, by setting a graduated indicator rod 610, the user can intuitively observe the adjustment range, improving the accuracy of adjustment and the convenience of operation.

[0065] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A voice-controlled intelligent control system for a heating furnace, characterized in that, It includes a voice acquisition module, a voice recognition module, a command parsing module, and an execution control module; The voice acquisition module is used to acquire user voice commands, and the output end of the voice acquisition module is connected to the input end of the voice recognition module. The voice acquisition module transmits the user voice commands to the voice recognition module. The speech recognition module is used to convert the speech command into text information, and the output end of the speech recognition module is connected to the input end of the command parsing module. The speech recognition module transmits the text information to the command parsing module. The instruction parsing module is used to determine control instructions based on the text information, and the output of the instruction parsing module is connected to the input of the execution control module. The instruction parsing module transmits the control instructions to the execution control module. The execution control module is connected to the instruction parsing module. The execution control module is used to perform corresponding control actions on the electric heating furnace according to the control instructions. The execution control module is electrically and communicatively connected to the control unit of the electric heating furnace. The execution control module outputs corresponding control signals to the electric heating furnace.

2. The intelligent voice control system for a heating furnace according to claim 1, characterized in that, The control commands include any one of the following: power on, power off, increase firepower, decrease firepower, and timed shutdown; It also includes a wake-up module, which is used to detect a preset wake-up word; The input terminal of the wake-up module is connected to the output terminal of the voice acquisition module and the input terminal of the voice recognition module, and is used to acquire the voice signal to be detected. The output of the wake-up module is connected to the control terminal of the speech recognition module. After detecting the preset wake-up word, the wake-up module triggers the speech recognition module to recognize subsequent speech commands.

3. The intelligent voice control system for heating furnace according to claim 1, characterized in that, It also includes a signal preprocessing module, which is used to perform at least one preprocessing on the voice command, the preprocessing including any one or more of noise suppression, echo cancellation, and voice activity detection; The input terminal of the signal preprocessing module is connected to the output terminal of the voice acquisition module, and the signal preprocessing module is able to acquire the voice command; The output of the signal preprocessing module is connected to the input of the speech recognition module, and the signal preprocessing module outputs the preprocessed speech signal to the speech recognition module.

4. The intelligent voice control system for heating furnace according to claim 1, characterized in that, The instruction parsing module is used to match the text information with a preset instruction set, and the instruction parsing module determines the control instruction and its parameters; The parameters include firepower level parameters and timing parameters; The control commands also include selection information for the target electric heater or associated information that can be used to determine the target electric heater; The preset instruction set is stored in the instruction parsing module and a storage module connected to the instruction parsing module. The output of the instruction parsing module is used to output the control instruction containing the parameters and relevant information about the target electric heating furnace to the execution control module.

5. The intelligent voice control system for a heating furnace according to claim 4, characterized in that, It also includes a gating decision module, which is connected to the speech recognition module and the instruction parsing module. The gating decision module is used to generate gating results based on the recognition reliability. The gating result includes any one of allowing execution, denying execution, or triggering confirmation; The execution control module is configured to output the control command only when the gating result is "execution allowed", or to output the control command after the gating result is "trigger confirmation" and "confirmation completed". The input terminal of the gate control decision module is connected to the output terminal of the speech recognition module and the output terminal of the instruction parsing module. The gate control decision module is able to acquire the text information and the control instructions and their parameters. The output terminal of the gating decision module is connected to the control terminal of the execution control module, and the gating decision module outputs the gating result to the execution control module; Upon receiving the gating result, the execution control module selectively executes or disables the execution of the control command.

6. The intelligent voice control system for a heating furnace according to claim 5, characterized in that, The recognition reliability includes noise level and speech recognition confidence level; The gating decision module is used to adopt differentiated gating strategies for different control commands based on the noise level and voice recognition confidence in the noisy environment of a restaurant kitchen. When the noise level exceeds the first threshold and the speech recognition confidence is lower than the second threshold, the power-on and power-up actions are rejected or triggered for confirmation, while the power-off and power-down actions are allowed to be executed or triggered for confirmation. It also includes a noise assessment module, the input of which is connected to the output of the speech acquisition module and the output of the signal preprocessing module, and the noise assessment module is capable of acquiring speech signals for assessment; The output of the noise assessment module is connected to the gating decision module, and the noise assessment module can output the noise level. The output of the speech recognition module is connected to the gating decision module, and the speech recognition module can output the speech recognition confidence level.

7. The intelligent voice control system for a heating furnace according to claim 6, characterized in that, It also includes a location determination module and an identity verification module; The location determination module is used to output the sound source location confidence score based on the speech signal. The sound source location confidence score is used to characterize the degree of matching between the speaker's location and the sound receiving location of at least one electric heating furnace. The identity authentication module is used to output operator identity information or operator identity confidence level based on voice signals; The gate control decision module is used to determine the target electric heating furnace based on the confidence level of the sound source location and the operator's identity information, and to perform authorization verification based on a preset permission mapping relationship. The gate control decision module enables different chefs to have differentiated control permissions for electric heating furnaces corresponding to different stove positions or different kitchen utensils. The input terminal of the position determination module is connected to the output terminal of the voice acquisition module and the output terminal of the signal preprocessing module, and the output terminal of the position determination module is connected to the gating decision module. The input terminal of the identity authentication module is connected to the output terminal of the voice acquisition module and the output terminal of the signal preprocessing module, and the output terminal of the identity authentication module is connected to the gating decision module. The permission mapping relationship is stored in the gate control decision module and the permission management module connected to the gate control decision module, and the permission management module is connected to the gate control decision module.

8. The intelligent voice control system for a heating furnace according to claim 7, characterized in that, The execution control module is configured to output a combined control quantity when it receives a control command to increase or decrease firepower, the combined control quantity including an arc power control quantity and an intake-related control quantity. The control quantities related to air intake include the effective opening degree control quantity of the air intake and the swirl intensity control quantity; The effective opening control of the air inlet is used to adjust the amount of air entering the arc zone by changing the effective opening area of ​​the air inlet when the fan power is constant, so that the amount of air entering the arc zone is matched with the change of arc power. The swirl intensity control is achieved by switching different guide hole groups with different guide angles. The guide hole groups are set in multiple groups along the tube axis and each group has a different guide angle. The execution control module is used to select the corresponding air guide hole group as the working air guide hole group according to the range of arc power. The execution control module can obtain the matching swirl intensity under different arc power and maintain arc stability and jet morphology stability. The output of the execution control module is connected to the arc power adjustment unit, the air inlet opening adjustment mechanism and the air guide hole group switching mechanism, respectively. The execution control module can output the arc power control quantity, the effective air inlet opening control quantity and the swirl intensity control quantity. The arc power adjustment unit, the air inlet opening adjustment mechanism, and the air guide hole group switching mechanism are respectively connected to the control unit of the electric heating furnace or integrated by the control unit of the electric heating furnace.

9. An electric heating furnace for generating electricity, characterized in that, The heating furnace is applied to the voice intelligent control system of the heating furnace according to any one of claims 1 to 8, including a shell (1), an interaction unit (2), a support frame (3), a heating unit (4), and an auxiliary mechanism (5). The interactive unit (2) is connected to the housing (1), the support frame (3) is set on the housing (1), and the heating unit (4) includes a mounting plate (41), a housing (42), multiple tapered tubes (44), a base plate (47), multiple electrode mounting assemblies (43), multiple arc generating assemblies (46), an air inlet (48), and a connecting pipe (49). The auxiliary mechanism (5) also includes multiple inner shells (57), multiple tubes (56), and multiple connecting tubes (58); The tube body (56) is provided with a plurality of holes (561); The base plate (47) is connected to the outer shell (42). Multiple tapered tubes (44) are connected to the outer shell (42). Multiple inner shells (57) are connected to the outer shell (42). The multiple inner shells (57) are connected to each other through connecting tubes (58). The connecting tubes (58) are connected to connecting tubes (49). The connecting tubes (49) are connected to the air inlet (48). The base plate (47) is connected to the mounting plate (41). Multiple electrode mounting assemblies (43) are provided on the mounting plate (41). The multiple electrode mounting assemblies (43) are respectively connected to multiple arc generating assemblies (46). The generating ends of the multiple arc generating assemblies (46) are located inside the tapered tubes (44).

10. The electric heating furnace according to claim 9, characterized in that: The outlines of the plurality of holes (561) are arc-shaped; The multiple conical tubes (44) and the multiple inner shells (57) are divided into two groups and the two groups are distributed in the same circle. The number of connecting tubes (49) is at least two and divided into two groups. The two groups of connecting tubes (49) respectively introduce gas into the two groups of inner shells (57).

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