An electromagnetic oven with bottom oil fume extraction function

Abstract

The utility model discloses an electromagnetic oven with bottom oil fume extraction function relates to the field of electromagnetic oven, including the electromagnetic oven, the fixed air cylinder is fixedly installed to the electromagnetic oven inner wall. The utility model discloses the innovative combination of the scene double -mode design, accurate mechanical linkage structure, all -round promotion electromagnetic oven oil fume extraction function practicality and user experience, in the low oil fume scene, through the little oil fume of one smoking mouth guide hot air flow gather, cooperate the oil fume suction of fan negative pressure into fixed air cylinder and smoking pipeline, in the high oil fume scene, with the help motor drive gear transmission drive screw rod rotation, synchronous wheel and synchronous belt ensure that both sides screw rod rotation speed, steering is completely consistent, realize lifting air cylinder steady rise, and through the trigger transmission rod of sliding block along the sliding slot movement, articulated rod linkage, make no.

Description

Technical Field

[0001] This utility model relates to the field of induction cookers, specifically an induction cooker with bottom fume extraction function. Background Technology

[0002] With the continuous upgrading of modern kitchen appliances, induction cookers have gradually become the mainstream cooking equipment in family kitchens and small catering establishments due to their advantages of fast heating speed, precise temperature control, energy saving and environmental protection and no open flame. Compared with traditional gas stoves, induction cookers can not only effectively avoid safety hazards such as gas leaks and excessive carbon monoxide, but also be compatible with cooking utensils made of various materials such as glass and ceramics, meeting diverse cooking needs.

[0003] Currently, cooking typically involves using an induction cooker in conjunction with a split-type range hood. The induction cooker is placed on the cooktop, while the range hood is installed on the wall or ceiling above the cooktop. The range hood uses a fan inside to create negative pressure, drawing in and expelling the rising fumes. The portability and flameless safety of the induction cooker meet the flexible heating needs of modern kitchens, while the split-type range hood, with its mature negative pressure fume extraction technology and large exhaust capacity, can handle certain scenarios where fumes are generated.

[0004] However, the combination of a split range hood and an induction cooker requires reserving countertop space for the induction cooker and wall or ceiling space for the range hood. The scattered layout of the devices not only occupies more vertical space in the kitchen, but may also reduce the efficiency of fume capture due to improper installation height of the range hood or too far distance between the smoke inlet and the point of fume generation, causing some of the fume to diffuse into the room. Therefore, an induction cooker with bottom fume extraction function is proposed. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an induction cooker with bottom fume extraction function to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an induction cooker with bottom fume extraction function, comprising an induction cooker, a fixed air duct fixedly installed on the inner wall of the induction cooker, and a lifting air duct slidably installed on the outer wall of the fixed air duct, a lead screw rotatably installed on the side of the induction cooker adjacent to the lifting air duct for lifting the lifting air duct, and a first helical gear rigidly connected to the bottom end of the lead screw, the first helical gear meshing with a second helical gear, and the central shaft of the second helical gear rigidly connected to the output shaft of a motor, the motor being fixedly installed on the bottom inner wall of the induction cooker for providing power for the rotation of the lead screw; The top of the lifting duct has a No. 1 smoke extraction port, and a No. 2 smoke extraction port is provided on one side. The No. 2 smoke extraction port is rotatably mounted with blades via a fixed shaft, and a transmission component is fixedly connected to the end of the fixed shaft of the blades for opening and closing the blades. The inner walls of the induction cooker adjacent to the lifting duct have sliding grooves on both sides, and the transmission component works in cooperation with the sliding grooves to ensure that after the lifting duct is raised, the blades are fully extended and form a fixed angle with the side wall of the lifting duct.

[0007] By adopting the above technical solution, the fixed air duct and the lifting air duct form a nested air duct integrated into the inner wall of the induction cooker, making the overall equipment more concise, greatly saving kitchen vertical space, improving the overall aesthetics and space utilization of the kitchen, and this equipment can realize lifting air vents to adapt to different levels of oil fume.

[0008] Furthermore, two sets of lead screws are provided on the inner wall of the induction cooker, and a synchronous pulley is rigidly connected to the shaft of the second helical gear, and a synchronous belt is connected between the two sets of synchronous pulleys.

[0009] By adopting the above technical solution, when the motor drives the single-sided lead screw to rotate, the synchronous belt can accurately transmit power to the other side synchronous pulley and the corresponding lead screw, avoiding the lead screw speed difference caused by the meshing gap of the gears on both sides and the fluctuation of motor output, ensuring that the lifting duct always remains horizontal during the lifting process, effectively reducing mechanical wear and extending the service life of the equipment.

[0010] Furthermore, a smoke extraction pipe is fixedly installed at the bottom of the fixed air duct, and the other end of the smoke extraction pipe is fixedly installed at the top of the fan box. A filter block is slidably installed on the outer wall of the fan box, and the filter block is located at the exhaust port of the fan box.

[0011] By adopting the above technical solution, the filter block is set at the exhaust port of the fan box, which can effectively adsorb oil mist particles and cooking odors in the fumes, reducing the amount of oil fume pollutants directly emitted outdoors. The sliding installation structure allows users to simply pull the filter block directly from the outside of the fan box to complete the disassembly. After replacing the filter block, it can be pushed back in along the slide rail to reset it. The operation steps are simple.

[0012] Furthermore, the transmission assembly includes a hinge rod, a transmission rod, and a slider. One end of the hinge rod is rigidly connected to the fixed shaft of the blade, and the other end is rotatably connected to the transmission rod. The slider is located at the bottom end of the transmission rod, and the slider protrudes laterally from the side wall of the lifting duct. The slider is slidably installed on the inner wall of the slide groove, and the upper end of the slide groove has a bend design.

[0013] By adopting the above technical solution, the opening and closing action of the blades is completely triggered by the lifting and lowering state of the air duct.

[0014] Furthermore, the two sets of lead screws are symmetrically distributed on the inner wall of the induction cooker, and the lead screws are threadedly connected to the inner wall of the lifting air duct.

[0015] By adopting the above technical solution, when the two sets of lead screws rotate synchronously, the rotational motion can be converted into linear motion to lift the air duct through the precise meshing of the threads, ensuring precise control of the lifting height of the air duct.

[0016] In summary, the present invention has the following main advantages: This utility model, through an innovative combination of scenario-based dual-mode design and precise mechanical linkage structure, comprehensively enhances the practicality and user experience of the induction cooker's fume extraction function. In low-fume scenarios, a small amount of oil fume is gathered by the hot airflow through the No. 1 fume extraction port, and the negative pressure of the fan draws the oil fume into the fixed air duct and fume extraction pipe. At the same time, the exhaust port filter block adsorbs oil mist particles, efficiently handling a small amount of oil fume and reducing grease adhesion to the pipe to avoid blockage. In high-fume scenarios, the motor drives the gear transmission to rotate the lead screw. The synchronous pulley and synchronous belt ensure that the speed and direction of the lead screws on both sides are completely consistent, achieving a smooth rise of the lifting air duct. Furthermore, the movement of the slider along the slide groove triggers the linkage of the transmission rod and the hinge rod, causing the No. 2 fume extraction port to fully open as the lifting air duct rises to its highest position, forming a dual-exhaust layout that significantly expands the exhaust coverage. The opening action of the No. 2 fume extraction port is completely synchronized with the rise and fall of the lifting air duct, requiring no additional control components. This reduces the risk of electronic failure, ensures precise matching of actions, extends the overall service life of the equipment, and improves user safety during use, fully meeting the diverse cooking needs of family kitchens. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a three-dimensional structural diagram of the present invention with the air vent raised. Figure 3 This is a cross-sectional structural diagram of the present invention with the air vent raised. Figure 4 This is a cross-sectional structural diagram of the present invention with the air vent retracted. Figure 5 This is a cross-sectional structural diagram of the drive component of this utility model.

[0018] In the diagram: 1. Induction cooker; 101. Slide rail; 11. Lifting fan duct; 111. No. 1 smoke outlet; 112. No. 2 smoke outlet; 113. Slider; 12. Fixed fan duct; 13. Blade; 131. Hinge rod; 132. Transmission rod; 14. Lead screw; 141. No. 1 helical gear; 142. No. 2 helical gear; 143. Synchronous pulley; 144. Synchronous belt; 15. Motor; 2. Fan box; 21. Filter block; 22. Smoke extraction duct. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of this utility model will be described below based on its overall structure.

[0021] Example 1 An induction cooker with bottom fume extraction function, such as Figures 1-5 As shown, the device includes an induction cooker 1. A fixed air duct 12 is fixedly installed on the inner wall of the induction cooker 1, and a lifting air duct 11 is slidably installed on the outer wall of the fixed air duct 12. The fixed air duct 12 and the lifting air duct 11 form a nested air duct integrated into the inner wall of the induction cooker 1. The overall design of the device is simpler, significantly saving kitchen space and improving the overall aesthetics and space utilization of the kitchen. Furthermore, this device can achieve a lifting air vent to adapt to different levels of oil fume. A lead screw is rotatably installed on the side of the induction cooker 1 adjacent to the lifting air duct 11. 14 is used to lift the lifting air duct 11, and the bottom end of the lead screw 14 is rigidly connected to a first helical gear 141. The first helical gear 141 is meshed with a second helical gear 142, and the central shaft of the second helical gear 142 is rigidly connected to the output shaft of the motor 15. The motor 15 is fixedly installed on the bottom inner wall of the induction cooker 1 to provide power for the rotation of the lead screw 14. The lifting power of the lead screw 14 is transmitted through the drive of the motor 15 and the meshing of the second helical gear 142 and the first helical gear 141. The power transmission path is clear and the loss is small. The top of the lifting duct 11 has a first smoke extraction port 111, and a second smoke extraction port 112 is provided on one side. The first smoke extraction port 111 is located at the top of the lifting duct and can capture the oil fumes at close range during the initial rising stage, reducing the time it takes for the oil fumes to diffuse into the room. The second smoke extraction port 112 can expand the capture range and guide the oil fumes to flow smoothly along the inner wall of the duct, preventing the oil fumes from forming eddies near the extraction port and further improving the smoke extraction efficiency. The second smoke extraction port 112 is rotatably mounted with blades 13 via a fixed shaft, and the end of the fixed shaft of the blades 13 is fixedly connected to... The transmission assembly is used to open and close the blades. The inner walls of the induction cooker 1 and the lifting air duct 11 are provided with sliding grooves 101 on both sides. The transmission assembly works in conjunction with the sliding grooves 101 to ensure that after the lifting air duct 11 is raised, the blades 13 are fully extended and form a fixed angle with the side wall of the lifting air duct 11. Through the linkage control of the transmission assembly and the sliding grooves 101, no additional electronic sensors or control modules are required. The blades 13 can be precisely opened and closed by relying solely on the lifting action of the lifting air duct 11, which reduces the possibility of electronic component failure and thus extends the service life of the equipment.

[0022] Please see Figures 1-5Two sets of lead screws 14 are installed on the inner wall of the induction cooker 1. The two sets of lead screws 14 can ensure that the lifting air duct 11 is raised and lowered smoothly, avoiding tilting and jamming caused by unilateral force. The shaft of the second helical gear 142 is rigidly connected to the synchronous pulley 143, and the two sets of synchronous pulleys 143 are connected by a synchronous belt 144. When the motor 15 drives the lead screw 14 on one side to rotate, the synchronous belt 144 can accurately transmit power to the synchronous pulley 143 on the other side and the corresponding lead screw 14, avoiding the difference in speed of the lead screw 14 caused by the meshing gap of the gears on both sides and the output fluctuation of the motor 15, ensuring that the lifting air duct 11 always remains horizontal during the lifting process, effectively reducing mechanical wear and extending the service life of the equipment.

[0023] Please see Figures 1-5 A smoke extraction duct 22 is fixedly installed at the bottom of the fixed air duct 12, and the other end of the smoke extraction duct 22 is fixedly installed at the top of the fan box 2, forming a complete and sealed smoke exhaust channel that enters from the smoke extraction port, passes through the fixed air duct 12 and the smoke extraction duct 22, and reaches the fan box 2. A filter block 21 is slidably installed on the outer wall of the fan box 2, and the filter block 21 is located at the exhaust port of the fan box 2. The filter block 21 is set at the exhaust port of the fan box 2 and adopts a sliding installation design, which can effectively adsorb oil mist particles and cooking odors in the fumes, reducing the amount of oil fume pollutants directly emitted to the outside. The sliding installation structure allows users to simply pull the filter block 21 directly from the outside of the fan box 2 to complete the disassembly. After replacing the new filter block 21, it can be pushed back in along the slide rail to reset it. The operation steps are simple.

[0024] Please see Figures 1-5 The transmission assembly includes a hinge rod 131, a transmission rod 132, and a slider 113, so that the opening and closing action of the blade 13 is entirely triggered by the lifting state of the lifting duct 11. One end of the hinge rod 131 is rigidly connected to the fixed shaft of the blade 13, and the other end is rotatably connected to the transmission rod 132. The slider 113 is located at the bottom end of the transmission rod 132, and the slider 113 protrudes laterally from the side wall of the lifting duct 11. The slider 113 is slidably installed on the inner wall of the slide groove 101. When the lifting duct 11 rises, the slider 113 moves along the slide groove 101. The trajectory of the slide groove 101 is converted into the blade 13's movement through the transmission rod 132 and the hinge rod 131. The rotational force of 3 causes the blade 13 to open gradually with the lifting height, and to move in the opposite direction when descending, causing the blade 13 to close automatically. The entire process can be synchronously controlled by relying solely on the trajectory constraints of the mechanical structure, which reduces the risk of circuit failure, simplifies the control logic, and ensures accurate and reliable action response. Furthermore, the upper end of the slide 101 has a turning design, and the trajectory of the slide 101 is designed with a specific inclined trajectory based on the optimal opening and closing angle of the blade 13. When the slider 113 enters the turning section, its oblique movement pushes the hinge rod 131 through the transmission rod 132, causing the blade 13 to rotate around the fixed axis to form a preset fixed angle with the side wall of the lifting duct 11.

[0025] Please see Figures 1-5 Two sets of lead screws 14 are symmetrically distributed on the inner wall of the induction cooker 1. The two sets of lead screws 14 apply driving force synchronously from both sides of the lifting air duct 11, so that the resultant force on the lifting air duct 11 during the lifting process is in the vertical direction, effectively offsetting the eccentric torque that may be generated by unilateral driving. The lead screws 14 are threadedly connected to the inner wall of the lifting air duct 11. When the two sets of lead screws 14 rotate synchronously, the rotational motion can be converted into the linear motion of the lifting air duct 11 through the precise meshing of the threads, ensuring the precise control of the lifting height of the air duct.

[0026] The working principle of this utility model is as follows: When the user performs low-smoke cooking such as porridge or soup, the low-smoke mode of the induction cooker 1 is activated. The small amount of oil fumes generated during cooking are gathered towards the No. 1 smoke outlet 111 under the action of hot airflow. Then, under the negative pressure of the fan in the fan box 2, the oil fumes directly enter the fixed air duct 12 connected to the No. 1 smoke outlet 111. After being guided by the fixed air duct 12, they flow into the smoke extraction pipe 22 and finally converge into the fan box 2. The filter block 21 at the exhaust port can adsorb oil mist particles in the oil fumes, reducing the adhesion of grease to the pipe. In daily use, the user can directly remove the filter block 21 from the outside for replacement to avoid the filter block 21 from becoming clogged and causing a decrease in smoke extraction efficiency, ensuring that the smoke extraction effect in the low-smoke mode is stable for a long time. When the user engages in high-fume cooking methods such as stir-frying or deep-frying, activating the high-fume mode of the induction cooker 1, the motor 15 starts working. The output shaft of the motor 15 is rigidly connected to the second helical gear 142, driving the second helical gear 142 to rotate. Since the second helical gear 142 is meshed with the first helical gear 141, and the first helical gear 141 is coaxially fixed with the lead screw 14, the rotational power of the motor 15 can be precisely transmitted to the lead screw 14 through gear meshing, driving the lead screw 14 to rotate. To prevent the lifting duct 11 from tilting due to rotation of the lead screw 14 on one side, the device installs synchronous pulleys 143 on the rotating shafts of the two sets of first helical gears 141, and the two sets of synchronous pulleys 143 are linked by a synchronous belt 144. When the motor 15 drives the lead screw 14 on one side to rotate, the synchronous pulley 143 on the same side rotates simultaneously. 43 rotates synchronously with the first helical gear 141, and the synchronous belt 144 drives the other synchronous pulley 143 and the corresponding first helical gear 142 and lead screw 14 to rotate synchronously, so that the speed and direction of the lead screws 14 on both sides are completely consistent, providing power guarantee for the smooth lifting of the lifting air duct 11. When the lead screw 14 rotates clockwise, the lifting air duct 11 slides upward along the outer wall of the fixed air duct 12. Conversely, when the lead screw 14 rotates counterclockwise, the lifting air duct 11 returns to its original position downward along the outer wall of the fixed air duct 12. When the lifting air duct 11 is raised to the highest position, the motor 15 stops running. At this time, the top of the lifting air duct 11 is higher than the tabletop of the induction cooker 1. The second smoke extraction port 112 opened on its side wall and the first smoke extraction port 111 at the top form a smoke exhaust layout that echoes each other from top to bottom, improving the smoke exhaust coverage. As the lifting duct 11 rises, the sliders 113 on both sides of the lifting duct 11 gradually move upward within the slide groove 101. At this time, the second smoke extraction port 112 is in the closed state. When the slider 113 reaches the turning point of the slide groove 101, as the lifting duct 11 continues to rise, the slider 113 begins to move diagonally upward, driving the transmission rod 132 to move diagonally upward. The movement of the transmission rod 132 causes the hinge rod 131 to rotate around the fixed axis of the blade 13. As the hinge rod 131 is rigidly connected to the fixed shaft, the rotation of the hinge rod 131 drives the blade 13 to rotate synchronously, and the second smoke extraction port 112 gradually opens. When the lifting duct 11 reaches the highest position, the slider 113 reaches the highest position of the slide groove 101, the blade 13 is fully extended and forms a fixed angle with the side wall of the lifting duct 11, the second smoke extraction port 112 is fully opened, and forms the maximum smoke exhaust channel with the first smoke extraction port 111 to ensure that the oil fumes in the strong oil fume scene are quickly sucked in.

[0027] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An induction cooker with bottom fume extraction function, comprising an induction cooker (1), characterized in that: The inner wall of the induction cooker (1) is fixedly installed with a fixed air duct (12), and the outer wall of the fixed air duct (12) is slidably installed with a lifting air duct (11). A lead screw (14) is rotatably installed on the side of the induction cooker (1) adjacent to the lifting air duct (11) for lifting the lifting air duct (11). The bottom end of the lead screw (14) is rigidly connected to a first helical gear (141). The first helical gear (141) is meshed with a second helical gear (142). The central shaft of the second helical gear (142) is rigidly connected to the output shaft of the motor (15). The motor (15) is fixedly installed on the bottom inner wall of the induction cooker (1) to provide power for the rotation of the lead screw (14). The top of the lifting air duct (11) has a first smoke outlet (111), and a second smoke outlet (112) is provided on one side. The second smoke outlet (112) is rotatably mounted with a blade (13) through a fixed shaft, and a transmission component is fixedly connected to the end of the fixed shaft of the blade (13) for opening and closing the blade. The inner walls of the induction cooker (1) adjacent to the lifting air duct (11) are provided with sliding grooves (101), and the transmission component works in cooperation with the sliding grooves (101) to ensure that after the lifting air duct (11) is raised, the blade (13) is fully unfolded and forms a fixed angle with the side wall of the lifting air duct (11).

2. The induction cooker with bottom fume extraction function according to claim 1, characterized in that: The lead screw (14) is provided in two sets on the inner wall of the induction cooker (1), and a synchronous pulley (143) is rigidly connected to the shaft of the second helical gear (142), and a synchronous belt (144) is connected between the two sets of synchronous pulleys (143).

3. The induction cooker with bottom fume extraction function according to claim 1, characterized in that: The bottom of the fixed air duct (12) is fixedly installed with a smoke extraction pipe (22), and the other end of the smoke extraction pipe (22) is fixedly installed on the top of the fan box (2). A filter block (21) is slidably installed on the outer wall of the fan box (2), and the filter block (21) is located at the exhaust port of the fan box (2).

4. The induction cooker with bottom fume extraction function according to claim 1, characterized in that: The transmission assembly includes a hinge rod (131), a transmission rod (132), and a slider (113). One end of the hinge rod (131) is rigidly connected to the fixed shaft of the blade (13), and the other end is rotatably connected to the transmission rod (132). The slider (113) is located at the bottom end of the transmission rod (132).

5. The induction cooker with bottom fume extraction function according to claim 4, characterized in that: The slider (113) protrudes laterally from the side wall of the lifting duct (11), and the slider (113) is slidably installed on the inner wall of the slide groove (101), and the upper end of the slide groove (101) has a bend design.

6. The induction cooker with bottom fume extraction function according to claim 1, characterized in that: The two sets of lead screws (14) are symmetrically distributed on the inner wall of the induction cooker (1), and the lead screws (14) are threadedly connected to the inner wall of the lifting air duct (11).

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