Knob device for a hob and hob

Abstract

The application provides a knob device of a stove and the stove, which comprises a knob part, a knob shaft and a wire; the knob part is provided with an induction module; the knob part is connected with the knob shaft; the knob shaft is provided with a through hole extending along the axial direction of the knob shaft; the wire passes through the through hole of the knob shaft and is used for electrically connecting the induction module with the stove; the induction module is used for generating an induction signal when a human body is detected and sending the induction signal to the stove through the wire, so that the stove performs a preset operation when the induction signal sent by the induction module is not received within a preset time length. In this way, the through hole extending along the axial direction of the knob shaft is arranged on the knob shaft, the wire can pass through the through hole and rotate with the knob shaft, the risk that the wire is wound or pulled off when the knob rotates is avoided, and the service life of the knob device is prolonged.

Description

Technical Field

[0001] This application relates to the field of smart home technology, and in particular to a knob device and a stove for a cooker. Background Technology

[0002] Cooking stoves are commonly used cooking appliances in the kitchen. During the cooking process, users may sometimes need to leave temporarily. If users forget to turn off the stove or set the timer, leaving the stove unattended can easily lead to dry burning or fire risks, posing safety hazards and wasting energy.

[0003] To address this issue, existing technologies propose incorporating human body sensors into cooktops, which can automatically reduce the heat or turn off the cooktop when a person is detected leaving for an extended period. One solution is to integrate the human body sensor into the cooktop's knob, allowing it to detect the user in front of the cooktop. However, since the knob is a rotating component, conventional wiring can easily cause the wires to become tangled or break when the knob is turned. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a knob device and a stove, wherein by providing a through hole extending along its axial direction on the knob shaft, a wire can be passed through the through hole and rotated together with the knob shaft, thereby avoiding the risk of the wire getting tangled or broken when the knob is rotated, and extending the service life of the knob device.

[0005] In a first aspect, this application provides a knob device for a stove, including a knob component, a knob shaft, and a wire; a sensing module is provided on the knob component; the knob component is connected to the knob shaft; a through hole extending along its axial direction is provided on the knob shaft; the wire passes through the through hole of the knob shaft for electrically connecting the sensing module to the stove.

[0006] The sensing module is used to generate a sensing signal when a human body is detected, and send the sensing signal to the stove through a wire so that if the stove does not receive the sensing signal sent by the sensing module within a preset time, it will perform a preset operation.

[0007] In an optional embodiment, the knob includes an upper knob portion and a knob fixing seat; the knob fixing seat is coupled to the stove; the sensing module is disposed in the knob fixing seat, and a sensing window is provided on the side wall of the knob fixing seat at the position corresponding to the sensing module, so that the sensing module can detect the corresponding human body.

[0008] The upper knob is rotatably mounted on the knob mounting base to keep the position of the sensing module unchanged when the upper knob is rotated; the upper knob is used to adjust the operating status of the stove.

[0009] In an optional embodiment, the knob also includes a control module; the sensing module is electrically connected to the control module; a wire passes through the through hole to electrically connect the control module to the stove control board of the stove, and the stove control board supplies power to the control module through the wire.

[0010] In an optional embodiment, at least one wiring hole communicating with the through hole is also provided on the side wall of the knob shaft; a top opening is provided at the top end of the knob shaft, and a bottom opening is provided at the bottom end of the knob shaft.

[0011] In an optional embodiment, the wiring hole includes a first wiring hole and a second wiring hole; the first wiring hole is located on the knob shaft at a position corresponding to the knob fixing seat; the second wiring hole is located below the first wiring hole; the wire electrically connected to the stove control board is introduced into the through hole through the second wiring hole.

[0012] If the control module is located inside the upper knob, the wires are divided into a first wire section and a second wire section. The first wire section is led out through the top opening and electrically connected to the control module; the second wire section is led out through the first wiring hole and electrically connected to the sensing module, so as to electrically connect the sensing module and the control module.

[0013] If the control module is located inside the knob mounting base, the wires are led out through the first wiring hole and electrically connected to the control module; the control module is electrically connected to the sensing module through the sensor control line.

[0014] In an optional implementation, the control module is equipped with a communication module, and the knob device establishes a communication connection with the smoke machine through the communication module.

[0015] In an optional implementation, a switch detection module is also included; the switch detection module is used to sense whether the rotational position of the knob is in the closed position; the sensing module is configured to start working when the switch detection module senses that the knob has left the closed position.

[0016] In an optional implementation, the switch detection module includes a sensor and a trigger corresponding to the sensor.

[0017] If the sensor is located on the upper knob, the trigger is correspondingly located on the knob mounting base; or, if the sensor is located on the knob mounting base, the trigger is correspondingly located on the upper knob.

[0018] In an optional embodiment, the knob is further provided with a status indicator module; the status indicator module is used to indicate the working status of the knob.

[0019] Secondly, this application provides a stove, including a stove body, a stove control panel disposed in the stove body, and a knob device of the stove according to any of the aforementioned embodiments; the knob device of the stove is coupled to the stove body and is electrically connected to the stove.

[0020] This application provides a knob device and a stove for a cooker. By providing a through hole extending axially on the knob shaft and allowing a wire to pass through the hole, the risk of the wire being tangled or broken when the knob is turned can be avoided. This allows the wire to provide a stable and reliable wired power supply and communication connection for the sensing module and control module inside the knob, solving the inconvenience of needing to install or replace batteries in the prior art. The sensing module detects whether someone is in front of the stove, and sends a signal through the wire when it detects that someone has left for an extended period of time, causing the stove to automatically reduce or turn off the flame, thereby avoiding the risk of dry burning and fire, and improving safety.

[0021] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the knob device of the stove provided in the embodiments of this application; Figure 2 A schematic diagram of the knob shaft provided in an embodiment of this application; Figure 3 A schematic diagram showing the control module provided in an embodiment of this application disposed inside the upper knob portion; Figure 4 A schematic diagram showing the control module provided in an embodiment of this application disposed inside the knob mounting base; Figure 5 This is a schematic diagram of the knob cover provided in an embodiment of this application.

[0025] Icons: 1-Knob mounting base; 2-Upper knob part; 3-Sensing module; 4-Status indicator module; 5-Knob shaft; 61-First wiring hole; 62-Second wiring hole; 631-Bottom end opening; 632-Top end opening; 64-Through hole; 7-Control module; 8-Trigger element; 9-Sensing element; 10-Sensor control line; 11-Fixing base device; 12-Second wire part. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] To facilitate understanding of this embodiment, the embodiments of this application will be described in detail below.

[0028] Example 1: Figure 1 This is a schematic diagram of the knob device of the stove provided in the embodiment of this application.

[0029] Reference Figure 1 The knob device of the stove includes a knob component, a knob shaft 5 and a wire; a sensing module 3 is provided on the knob component; the knob component is connected to the knob shaft 5; a through hole 64 extending along its axial direction is opened on the knob shaft 5; the wire passes through the through hole 64 of the knob shaft 5 to electrically connect the sensing module 3 to the stove.

[0030] Here, the sensing module 3 can include, but is not limited to, pyroelectric infrared sensors, microwave radar sensors, ultrasonic sensors, or visual (camera) sensors—any sensor capable of detecting the presence of a human body. The sensing module 3 is used to detect whether a user is present in front of the stove. The knob is connected to the knob shaft 5; when the user rotates the knob, the knob shaft 5 rotates accordingly.

[0031] Reference Figure 2 The knob shaft 5 has a through hole 64 extending along its axial direction. The through hole 64 provides a wiring channel through the knob shaft 5.

[0032] Reference Figure 3 and Figure 4 A wire passes through the through hole 64 of the knob shaft 5 to electrically connect the sensing module 3, which is located inside the knob, to the cooktop (e.g., the cooktop control board inside the cooktop body). This electrical connection can simultaneously provide power and communication.

[0033] When the knob and knob shaft 5 rotate, the wire passing through the shaft core through hole 64 rotates only along with it, with little swing, thus effectively avoiding the risk of the wire being tangled or broken by the rotation of the knob.

[0034] In an optional embodiment, at least one wiring hole communicating with the through hole 64 is also provided on the side wall of the knob shaft 5; a top opening 632 is provided at the top end of the knob shaft, and a bottom opening 631 is provided at the bottom end of the knob shaft 5.

[0035] The knob shaft 5 is also provided with at least one wiring hole that communicates with the through hole 64; the wire is led out from the through hole 64 through the wiring hole to connect to the sensing module 3.

[0036] Here, refer to Figure 2 The knob shaft 5 is a cylindrical component that connects the knob and the internal valve body on the stove and transmits rotational torque.

[0037] The knob shaft core opening refers to a through hole 64 drilled along its axial direction (i.e., length direction) at the very center of the knob shaft 5, which forms the main channel for the wire. The wire will run from one end of the cooktop main board, through this through hole 64, and upwards into the inside of the knob device.

[0038] The wiring hole of knob shaft 5 refers to one or more openings drilled in the side wall of knob shaft 5. Figure 2 The first routing hole 61 and the second routing hole 62 in the diagram. A routing hole is an exit point from which the main body or branch of a wire is led out of a through hole. For example... Figure 3 and Figure 4 As shown, the wire passing through the through hole 64 will be led out through one of the wiring holes to connect to the control module 7 or the sensing module 3 installed inside the knob mounting base 1 or the upper knob part 2.

[0039] The bottom opening 631 of the knob shaft refers to the opening at the end of the knob shaft 5 (i.e., the end that is inserted into the stove), which is the entrance for the wire to enter the through hole 64 of the knob shaft 5. After the wire is connected from the stove control panel, it enters the central channel of the knob shaft 5 through this bottom opening 631.

[0040] The top of the knob shaft 5 is provided with a top opening 632, which is another outlet for the wire.

[0041] Ordinary stove knobs are typically purely mechanical, used only to transmit the rotational torque applied by the user to open or adjust the gas valve. Therefore, ordinary knobs do not contain any electronic components, require no electrical connection, and naturally lack wiring or cabling design.

[0042] However, the knob device provided in this application embodiment is an intelligent knob, which integrates a sensing module 3 inside the knob component. The sensing module is an electronic component that requires a stable power supply and needs to send the collected signals to the main control board of the stove in order to achieve safety functions such as automatically reducing the firepower or turning off the stove when a person is detected leaving for an extended period of time.

[0043] If conventional wiring is used, the wire connects from the fixed cooktop body to the rotatable knob. When the user turns the knob, the wire will inevitably twist and tangle, eventually breaking or causing poor contact. While battery power is another option, batteries require installation space, and users need to regularly supply and replace them, causing significant inconvenience.

[0044] To solve the aforementioned wiring problem, this application provides a through hole 64 extending axially on the knob shaft 5. The main body of the wire passes through the central axis of the through hole 64, allowing it to rotate together with the knob shaft 5. Since the wire is located at the center of rotation, its oscillation amplitude during rotation is extremely small, preventing damage to the wire and fundamentally avoiding the risk of the wire being tangled or broken.

[0045] Based on this, since the sensing module 3 is installed in the knob mounting base 1 outside the through hole 64, an outlet must be provided for the wire located in the shaft through hole 64 so that it can be connected to the sensing module 3.

[0046] The wiring hole is formed on the side wall of the knob shaft and must be connected to the through hole 64 of the shaft core. The wiring hole serves as the outlet for the wire to be led out from the through hole. The wire is led out from the through hole through the wiring hole to connect to the sensing module 3 located in the knob mounting base 1.

[0047] In summary, the bottom opening 631, through hole 64, and top opening 632 in this embodiment constitute a complete and flexible wiring channel, allowing the wires to safely pass through the rotating knob shaft 5 and be led out from the appropriate opening according to the different installation positions of the control module 7 and the sensing module 3. This allows the wires to pass through the rotating upper knob part 2 and be safely led out to connect to the sensing module 3, thereby solving the risk of wire tangling and breakage while ensuring the long-term reliability of the smart knob function.

[0048] The sensing module 3 is used to generate a sensing signal when a human body is detected, and send the sensing signal to the stove through a wire so that if the stove does not receive the sensing signal sent by the sensing module 3 within a preset time, it will perform a preset operation.

[0049] Here, the sensing module 3 is configured to generate a sensing signal (e.g., continuously or periodically sending a presence signal) when a human body is detected. The sensing module 3 sends the sensing signal to the stove via a wire (i.e., wired communication).

[0050] The control panel of the stove is equipped with a timer. When no sensing signal is received, the timer starts to run so that if the stove does not receive a sensing signal from the sensing module 3 within a preset time (which can be set to 5 minutes) (that is, it is determined that the user has left the stove and the preset time has been reached), a preset operation will be executed.

[0051] The preset actions can be to reduce the heat level, turn off the stove directly (cut off the gas supply), or issue a beeping alarm.

[0052] In an optional implementation, refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The knob assembly includes an upper knob part 2 and a knob fixing seat 1; the knob fixing seat 1 is coupled to the stove; the sensing module 3 is disposed in the knob fixing seat 1, and a sensing window is provided on the side wall of the knob fixing seat 1 at the position corresponding to the sensing module 3, so that the sensing module 3 can detect the corresponding human body.

[0053] The upper knob 2 is rotatably mounted on the knob mounting base 1 so that the position of the sensing module 3 remains unchanged when the upper knob 2 is rotated; the upper knob 2 is used to adjust the operating status of the stove.

[0054] Here, the knob mounting base 1 is coupled to the cooktop. This coupling is a wide range of connection methods, including but not limited to snap-fitting, screwing, or using adhesive to stick or fix it to the cooktop panel, so that it is securely installed on the cooktop.

[0055] The upper knob 2 is the part that the user operates directly by hand, and is used to enable the user to adjust the gear position by turning the knob. The upper knob 2 is rotatably mounted on the knob fixing base 1, and the upper knob 2 and the knob fixing base 1 form a two-layer split structure.

[0056] In this embodiment, the upper knob 2 needs to rotate. However, to ensure the accuracy of its detection, the sensing module 3 mounted on the knob mounting base 1 needs to always face the user to stably sense the presence of a human body. If the sensing module 3 rotates with the upper knob 2, its detection direction will continuously deviate, leading to sensing failure. Therefore, this embodiment designs the knob device as a rotatable upper knob 2 and a fixed, non-rotating knob mounting base 1, and places the sensing module 3 inside the knob mounting base 1. This ensures that the position of the sensing module 3 remains unchanged when the user adjusts the upper knob 2, thereby guaranteeing the stability and reliability of the human body sensing function.

[0057] The sensing module 3 may include, but is not limited to, pyroelectric infrared sensors, microwave radar sensors, ultrasonic sensors, or visual (camera) sensors—any sensor capable of detecting the presence of a human body. (See reference...) Figure 3 and Figure 4 The knob fixing base 1 is a hollow shell. The sensing module 3 is set in the hollow space of the knob fixing base 1. A sensing window is opened on the side wall of the knob fixing base 1 corresponding to the position of the sensing module 3, so that the sensing module 3 can detect the corresponding human body.

[0058] Here, the sensing module 3 is installed in the internal cavity of the knob fixing base 1 to prevent the sensing module 3 from being corroded by oil or water vapor or damaged by external impact during use.

[0059] In order for the internally installed sensor module 3 to detect the human body outside, a sensing window is provided on the side wall of the knob mounting base 1 at the position corresponding to the installation position of the sensor module 3. The sensing window is a channel connecting the inside and outside of the knob mounting base 1, allowing the sensor module 3 to detect the corresponding human body.

[0060] The sensing window can be a physical opening or through-hole. In a preferred embodiment, the opening can also be covered with a material (e.g., infrared transparent acrylic or a specific plastic) that is transparent to the detection signal (e.g., infrared light) of the sensing module 3.

[0061] The structure of the sensing module 3 will be explained in detail below, taking into account the actual usage scenarios of the two types of stoves and knobs.

[0062] Scenario 1: The knob device is set on the horizontal plane of the stove: The knob is mounted vertically on the top horizontal panel of the cooktop.

[0063] In this scenario, the sidewall of the knob mounting base 1 is its vertical cylindrical surface. The sensing window is opened on this vertical sidewall, and the sensing module 3 (e.g., a pyroelectric infrared sensor) is horizontally mounted inside the mounting base, with its detection direction aligned with the sensing window.

[0064] During installation, the knob mounting base 1 is fixed so that its sensing window faces directly in front of the stove, i.e., the area where the user usually stands. Since the knob mounting base 1 itself is fixed and does not rotate, when the user stands in front of the stove to cook, the sensing module 3 can detect the infrared radiation or movement of the user's body (e.g., legs or torso) horizontally through the sensing window, thereby determining that someone is present.

[0065] Scenario 2: The knob device is located on the vertical side of the stove: The knob is mounted horizontally on the vertical front control panel (i.e., the side panel) of the stove. At this time, the rotation axis of the knob is parallel to the ground.

[0066] In this scenario, the side wall (i.e., its cylindrical surface) of the knob mounting base 1 is parallel to the front control panel of the stove. The sensor window is still located on this side wall, and the sensor module 3 is vertically (or tilted) installed inside the mounting base, with the detection direction aligned with the sensor window.

[0067] During installation, the knob mounting base 1 is fixed so that its sensing window faces vertically or away from the stove's facade, thereby detecting the user's legs or feet located in front of the stove and obtaining the corresponding human body signal.

[0068] In summary, regardless of the installation method of the knob device (horizontal plane or vertical surface), the sensing module 3 is set in the knob fixing base 1 and performs stable detection towards the user area through the sensing window on its side wall.

[0069] Reference Figure 5 The upper knob part 2 includes a knob cover, which is the top surface part or top cover of the upper knob part 2.

[0070] In an optional embodiment, the knob also includes a control module 7; the sensing module 3 is electrically connected to the control module 7; a wire passes through the through hole 64 to electrically connect the control module 7 to the stove control board of the stove, and the stove control board supplies power to the control module 7 through the wire.

[0071] Here, the control module 7 can be a PCB (control circuit board) as the control core inside the knob device.

[0072] After the wire passes through the through hole 64, the control module 7 is electrically connected to the stove control board, and the stove control board supplies power to the control module 7 through the wire. The control module 7 and the sensing module 3 in the knob device can directly draw power from the stove control board.

[0073] In an optional implementation, refer to Figure 2 The wiring holes include a first wiring hole 61 and a second wiring hole 62. (Refer to...) Figure 3 and Figure 4 The first wiring hole 61 is located on the knob shaft 5 at a position corresponding to the knob fixing seat 1; the second wiring hole 62 is located below the first wiring hole 61; the wires that are electrically connected to the stove control board are introduced into the through hole 64 through the second wiring hole 62.

[0074] Here, the first wiring hole 61 is provided on the knob shaft 5, and the position of the first wiring hole 61 corresponds to that of the knob fixing base 1, for connecting the components inside the knob fixing base 1. The second wiring hole 62 can be provided below the first wiring hole 61.

[0075] Reference Figure 3 If the control module 7 is located inside the upper knob part 2, the wires are divided into a first wire part and a second wire part 12. The first wire part is led out through the top opening 632 and electrically connected to the control module 7; the second wire part 12 is led out through the first wiring hole 61 and electrically connected to the sensing module 3, so as to electrically connect the sensing module 3 and the control module 7.

[0076] Here, the control module 7 is located inside the rotatable upper knob 2.

[0077] The wires that are electrically connected to the stove control panel are introduced from the bottom opening 631 and enter the through hole 64 that extends axially from the center of the knob shaft 5.

[0078] At this point, the conductor can be divided into a first conductor section and a second conductor section.

[0079] The first guide wire travels upward along the through hole 64 to the top of the knob shaft 5, is led out through the top opening 632, and is electrically connected to the control module 7 installed inside the upper knob part 2.

[0080] The second wire is led out through the first wiring hole 61 halfway through and is electrically connected to the sensing module 3 installed in the knob fixing base 1.

[0081] In this way, the sensing module 3 located on the knob mounting base 1 and the control module 7 located on the upper knob part 2 are electrically connected by wires passing through the knob shaft 5.

[0082] Reference Figure 4 If the control module 7 is located inside the knob mounting base 1, the wire is led out through the first wiring hole 61 and electrically connected to the control module 7; the control module 7 is electrically connected to the sensing module 3 through the sensor control line 10.

[0083] Here, the control module 7 is located inside the stationary knob holder 1.

[0084] At this time, the wire that is electrically connected to the stove control board is introduced into the through hole 64 from the bottom opening 631, and after passing through the through hole 64 for a certain distance, it is led out through the second wiring hole 62 and electrically connected to the control module 7 installed inside the knob fixing seat 1.

[0085] Since both the sensing module 3 and the control module 7 are located inside the same knob mounting base 1, the control module 7 can be electrically connected to the sensing module 3 via a local sensor control line 10, and this connecting wire does not need to pass through the knob shaft 5.

[0086] In an optional implementation, the control module 7 is equipped with a communication module, and the knob device establishes a communication connection with the smoke machine through the communication module.

[0087] Here, the communication module can be a standalone module or a PCB with integrated communication functionality. The communication module enables wireless communication between the knob device and external devices (such as the cooktop motherboard or range hood). In one specific embodiment, the communication module can be a Bluetooth module. In other feasible embodiments, the communication module can also be a Wi-Fi module, a Zigbee module, or other radio frequency communication modules.

[0088] When the knob is turned (the stove is turned on), the control module 7 can send a start signal to the range hood through the communication module, so that the range hood starts automatically; when the knob is turned off, a stop signal is sent.

[0089] In an optional implementation, a switch detection module is also included; the switch detection module is used to sense whether the rotational position of the knob is in the closed position; the sensing module 3 is configured to start working when the switch detection module senses that the knob has left the closed position.

[0090] Here, the control module 7 is configured to turn on the sensing module 3 when the switch detection module detects that the stove is in the on state, and turn off the sensing module 3 when the switch detection module detects that the stove is in the off state.

[0091] The switch detection module's function is not limited to detecting switches. It can also calculate and sense the knob's position by setting multiple sensors 9 and triggers 8 (such as multiple magnetic sensors, coded switches, or potentiometers). The knob is not limited to adjusting positions; it can also be used to adjust time, menu functions, etc.

[0092] In an optional implementation, the switch detection module includes a sensor 9 and a trigger 8 corresponding to the sensor 9.

[0093] If the sensing element 9 is provided on the upper knob part 2, then the trigger element 8 is provided on the knob fixing base 1 accordingly; or, if the sensing element 9 is provided on the knob fixing base 1, then the trigger element 8 is provided on the upper knob part 2 accordingly.

[0094] Here, the sensor 9 determines the on or off state of the stove by detecting the position of the trigger 8.

[0095] The sensing element 9 is a magnetic induction sensor (such as a Hall sensor or a reed switch), and the trigger element 8 is a magnet installed in the corresponding position. When the upper knob 2 is rotated away from the closed position, the magnet approaches or moves away from the magnetic induction sensor, thereby generating a change in voltage level, which tells the control module 7 that the stove has been turned on.

[0096] In other feasible embodiments, the sensing element 9 can also be a common mechanical switch or an infrared sensing position signal, in which case the trigger element 8 is a blocking plate. The combination of the sensing element 9 and the trigger element 8 can also be an coded switch, which determines whether the switch has left the closing point by detecting changes in its signal.

[0097] In one embodiment, the control module 7 is further configured to send the operating status of the stove to the range hood via the communication module, so that the range hood responds to the operating status; wherein the operating status includes an on state, an off state, and at least one firepower level state.

[0098] Specifically, the control module 7 can obtain the current specific setting of the stove through the switch detection module or the gear adjustment coded switch, and send the operating status of the stove to the range hood so that the range hood automatically starts when the stove is turned on; the range hood automatically increases the air volume when the stove's heat is increased; and the range hood automatically turns off when the stove is turned off.

[0099] In an optional embodiment, the knob is further provided with a status indicator module 4; the status indicator module 4 is used to indicate the working status of the knob.

[0100] Here, the status indicator module 4 can be an indicator light. The status indicator module 4 is mounted on the knob cover of the upper knob section 2. The status indicator module 4 is electrically connected to the control module 7. (Refer to...) Figure 1 The status indicator module 4 can be set on the upper surface of the rotatable upper knob part 2.

[0101] The indication functions of status indication module 4 include, but are not limited to: Indicating direction: For example, indicator lights can be used to indicate the direction in which a knob is rotated.

[0102] Indicating operating status: For example, when the stove is turned on, the indicator light can emit a specific lighting pattern (such as a constant light or a breathing light) to indicate that the stove is turned on.

[0103] Indicating communication status: For example, indicator lights can be used to indicate the status of sending linkage signals with the range hood.

[0104] Indicator of off status: For example, when the knob is turned off, the indicator light goes out, indicating that the stove is in the off state.

[0105] In an optional embodiment, the control module 7 is disposed inside the upper knob portion 2; or, the control module 7 is disposed inside the knob fixing base 1.

[0106] In one specific implementation, refer to Figure 3 When the control module 7 is installed in the cavity inside the rotatable upper knob 2, the sensor 9 is installed on the control module 7 and rotates together with the upper knob 2.

[0107] The knob fixing base 1 is attached to the stove panel by the fixing base device 11 at the bottom, and remains stationary.

[0108] The sensing module 3 is installed inside the stationary knob holder 1 and faces the user to ensure that its sensing direction does not change as the knob is turned.

[0109] The trigger element 8 is fixed on the stationary knob mounting base 1.

[0110] The wire is connected from the main board of the stove and first enters the bottom hole 631 of the bottom of the knob shaft 5.

[0111] The wire travels vertically upwards along the through hole 64.

[0112] like Figure 3 As shown, the wire is led out through the first wiring hole 61 halfway through its path. After being led out, it is connected to the sensing module 3 mounted on the knob mounting base 1 via the second wire section 12.

[0113] The first wire continues upward, passes through the knob shaft 5, and finally exits from the opening 632 at the top of the knob shaft. After exiting, it is connected to the control module 7 installed on the upper knob part 2.

[0114] When the stove is working, the main board of the stove provides power and communication connection to the sensing module 3 in the knob fixing seat 1 and the control module 7 in the upper knob part 2 through the wire passing through the knob shaft 5.

[0115] When the user rotates the upper knob 2, the sensor 9 mounted on it will rotate accordingly. When the knob is turned to the off position, the rotating sensor 9 is aligned with the fixed trigger 8. The control module 7 receives this signal, determines that the stove is off, and then stops the operation of the sensor module 3.

[0116] When the knob leaves the off position, the stove is turned on, and the control module 7 activates the sensor module 3. The sensor module 3 sends the detected human body signal to the control module 7 via the sensor control line 10 (or directly to the stove's main board via a wire) to perform subsequent operations such as turning off the stove when the person leaves.

[0117] When the user rotates the upper knob 2, the entire knob shaft 5 and all the internal wires will rotate together. Since the wires are located at the center of the shaft, the swing is very small, so they will not be pulled off or tangled.

[0118] In one specific implementation, refer to Figure 4 When the control module 7 is installed inside the rotatable knob holder 1, the sensing module 3 is also installed inside the knob holder 1 and faces the user side.

[0119] The sensor 9 is mounted on the upper surface of the knob mounting base 1, located next to the knob shaft 5.

[0120] The entire knob fixing base 1 is attached to the stove panel by the fixing base device 11 and remains stationary.

[0121] The upper knob part 2 is located above the knob fixing base 1, and the trigger 8 is installed on the bottom surface of the upper knob part 2.

[0122] The wire is connected from the main board of the stove, enters through the opening 631 at the bottom end of the knob shaft 5, and goes upward along the through hole 64.

[0123] Upon reaching the plane where the knob mounting base 1 is located, the wire is led out through the second wiring hole 62 and connected to the stationary control module 7.

[0124] The sensing module 3, mounted on the knob mounting base 1, is directly electrically connected to the control module 7 via the sensor control line 10. The sensing element 9, mounted on the knob mounting base 1, is directly electrically connected to the control module 7, which is also located within the knob mounting base 1.

[0125] The cooktop mainboard supplies power to the fixed control module 7 via a wire passing through the shaft hole. When the user turns the upper knob 2, the knob shaft 5 rotates accordingly. However, the wire passing through its shaft and the control module 7 connected to it remain stationary. Since the knob shaft 5 rotates around the stationary wire at its center, it also prevents the wire from getting tangled or broken.

[0126] The user rotates the upper knob 2, causing the trigger 8 at its bottom to rotate. When the knob is turned to the off position, the rotating trigger 8 moves exactly above the fixed sensor 9, triggering a signal that allows the control module 7 to determine that the stove is off.

[0127] When the stove is turned on, the control module 7 activates the fixed sensing module 3 to start working, realizing the functions of detecting people leaving and turning off the stove.

[0128] The upper knob 2 is equipped with only a passive trigger 8, and the wire passes through the center of the rotating shaft to supply power to the fixed part.

[0129] This application provides a knob device for a stove. By creating an axial through hole and a wiring hole on the knob shaft and allowing wires to pass through, it solves the power supply and communication wiring problems when deploying a sensor module inside the knob. This achieves stable wired power supply and communication from the stove control board to the internal module of the knob, avoiding the risks of wire tangling and breakage, as well as the inconvenience of battery replacement. The sensor module detects the presence of a human body and sends a signal via a wire when the user is detected to be away for an extended period, causing the stove to perform preset operations such as reducing or turning off the flame, thereby avoiding the risk of dry burning and improving user safety.

[0130] Example 2: This application embodiment also includes a stove, which includes a stove body, a stove control panel disposed in the stove body, and the aforementioned stove knob device; the stove knob device is coupled to the stove body and is electrically connected to the stove.

[0131] Here, the knob device is coupled and installed on the panel of the cooktop body, and its knob shaft 5 passes through the panel and is connected to the gas valve body inside the cooktop body. The knob device is electrically connected to the cooktop control board through a wire passing through the through hole 64 of the knob shaft 5. The cooktop control board supplies power to the control module 7 and the sensing module 3 inside the knob device through this wire.

[0132] When the switch detection module of the knob device detects that the knob has been turned and moved away from the closed position, the sensing module 3 inside the knob device starts working and identifies in real time whether a person is in front of the stove.

[0133] When the sensing module 3 detects that the user has left the stove and no human body sensing signal is received within a preset time, the control module 7 of the knob device will send a command to the stove control board inside the stove body via wired communication.

[0134] Upon receiving the instruction, the cooktop control panel will immediately execute preset safety operations, such as controlling the gas valve to reduce the flame level, or automatically shutting off the flame (cutting off the gas supply) after a longer period of time.

[0135] The cooktop can also achieve linkage between the range hood and cooktop via a communication module (such as an optional Bluetooth module) within the knob device.

[0136] When the user turns the knob to ignite the stove, the control module 7 of the knob device can send a start signal to the range hood via Bluetooth, and the range hood will start automatically; when the stove is turned off, the range hood will turn off.

[0137] This application provides a cooktop that achieves stable wired power supply and communication from the cooktop control board to the module inside the knob via a knob shaft wiring method. This eliminates the need for batteries inside the knob, avoiding the inconvenience of battery replacement for users and improving product reliability. Simultaneously, the cooktop can automatically trigger the cooktop control board to perform flame reduction or shutdown operations when it detects that the user has been away from the cooktop for an extended period, thereby preventing dry burning and fire risks caused by unattended operation and improving cooking safety.

[0138] The computer program product provided in this application includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0139] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0140] Furthermore, in the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0141] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0142] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A knob device of a cooktop, characterized in that, The device includes a knob, a knob shaft, and a wire; the knob is equipped with a sensing module; the knob is connected to the knob shaft; the knob shaft has a through hole extending along its axial direction; the wire passes through the through hole of the knob shaft to electrically connect the sensing module to the stove. The sensing module is used to generate a sensing signal when a human body is detected, and send the sensing signal to the stove through the wire, so that if the stove does not receive the sensing signal sent by the sensing module within a preset time period, it will perform a preset operation.

2. A knob device for a hob according to claim 1, characterized in that The knob assembly includes an upper knob part and a knob fixing base; the knob fixing base is coupled to the stove; the sensing module is disposed in the knob fixing base, and a sensing window is opened on the side wall of the knob fixing base corresponding to the position of the sensing module, so that the sensing module can detect the corresponding human body; The upper knob is rotatably mounted on the knob mounting base so that the position of the sensing module remains unchanged when the upper knob is rotated; The upper knob is used to adjust the operating status of the stove.

3. A knob device for a hob according to claim 2, characterized in that The knob also includes a control module; the sensing module is electrically connected to the control module; the wire passes through the through hole and electrically connects the control module to the stove control board of the stove, and the stove control board supplies power to the control module through the wire.

4. A knob device for a hob according to claim 3, characterized in that The side wall of the knob shaft is also provided with at least one wiring hole that communicates with the through hole; the top end of the knob shaft is provided with a top end opening, and the bottom end of the knob shaft is provided with a bottom end opening.

5. A knob device for a hob according to claim 4, characterized in that The wiring hole includes a first wiring hole and a second wiring hole; the first wiring hole is located on the knob shaft at a position corresponding to the knob fixing seat; the second wiring hole is located below the first wiring hole; the wire electrically connected to the stove control board is introduced into the through hole through the second wiring hole; If the control module is located inside the upper knob, the wire is divided into a first wire section and a second wire section. The first wire section is led out through the top opening and electrically connected to the control module; the second wire section is led out through the first wiring hole and electrically connected to the sensing module, so as to electrically connect the sensing module and the control module. If the control module is located inside the knob mounting base, the wire is led out through the first wiring hole and electrically connected to the control module; the control module is electrically connected to the sensing module through the sensor control line.

6. A knob device for a hob according to claim 5, characterized in that The control module is equipped with a communication module, and the knob device establishes a communication connection with the tobacco machine through the communication module.

7. The knob device of claim 2, wherein It also includes a switch detection module; the switch detection module is used to sense whether the rotation position of the knob is in the closed position; the sensing module is configured to start working when the switch detection module senses that the knob has left the closed position.

8. A knob device for a hob according to claim 7, characterized in that The switch detection module includes a sensor and a trigger corresponding to the sensor; If the sensor is located on the upper knob, the trigger is correspondingly located on the knob mounting base; or, if the sensor is located on the knob mounting base, the trigger is correspondingly located on the upper knob.

9. The knob device of the cooktop according to claim 1, characterized in that, The knob is also provided with a status indicator module; the status indicator module is used to indicate the working status of the knob.

10. A hob, characterized in that The stove includes a stove body, a stove control panel disposed in the stove body, and a knob device of the stove according to any one of claims 1-9; the knob device of the stove is coupled to the stove body and is electrically connected to the stove.

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