Lifting type cooking utensil

Abstract

The invention provides a lifting type cooking utensil which comprises a container, a lifting device and a control device. A cavity used for containing food is formed in the container. The mounting structure is provided with a first mounting part corresponding to the opening position of the container; a heating structure; the heating structure is movably arranged on the first mounting part through the lifting structure, and the lifting structure drives the heating structure to lift up and down in the container. The heating structure is movably arranged on the first mounting part through the lifting structure, the lifting structure drives the heating structure to lift up and down in the container, and the heating structure can be adjusted in the heating height direction according to food of different heights, so that the heating efficiency of the heating structure is improved, and the cooking time is shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of cooking utensils, and in particular relates to a lifting cooking utensil. Background Art

[0002] Cooking utensils are common devices in daily life. The heating structure of cooking utensils in related technologies, such as air fryers, is generally fixed. When using the cooking utensils for cooking, the heating structure of the cooking utensils remains at the same height to heat the food in the cooking cavity. The heating structure cannot be adjusted in the heating height direction for food at different heights, resulting in low heating efficiency of the heating structure and longer cooking time. Summary of the Invention

[0003] In order to overcome at least one of the defects of the above-mentioned prior art, the present invention provides a lifting cooking utensil, whose heating structure is movably arranged on a first mounting portion through a lifting structure. The lifting structure drives the heating structure to move up and down inside the container. The heating structure can be adjusted in the heating height direction according to foods of different heights, so as to improve the heating efficiency of the heating structure and shorten the cooking time.

[0004] The technical solution adopted by the present invention to solve the problem is: A lifting cooking appliance, comprising: a container, the interior of which forms a cavity for placing food; a mounting structure having a first mounting portion corresponding to an opening position of the container; Heating structure; The heating structure is movably arranged on the first mounting portion through the lifting structure, and the lifting structure drives the heating structure to move up and down inside the container.

[0005] As an optional embodiment, the lifting structure includes a first driving member, a transmission mechanism, a first threaded member, and a fixing member, wherein the fixing member is disposed on the first mounting portion; The first driving member is arranged on the fixing member, and the output end of the first driving member is transmission-connected to the first threaded member via a transmission mechanism; The heating structure includes a second threaded member, a second mounting portion, and a heating member, wherein the second mounting portion is arranged on the second threaded member, and the heating member is arranged inside the second mounting portion; The first threaded member is threadedly connected to the second threaded member, and the first threaded member and the second threaded member are nested; The first driving member drives the first threaded member to rotate through the transmission mechanism, and the first threaded member drives the second threaded member to move up and down through the rotation, and the second mounting portion and the heating member move up and down relative to the first mounting portion following the second threaded member.

[0006] As an optional embodiment, the transmission mechanism includes a gear, the output end of the first driving member is transmission-connected to the gear, a gear ring is provided on the upper portion of the first threaded member, and the gear and the gear ring are meshed with each other.

[0007] As an optional embodiment, the upper portion of the fixing member is provided with a groove, and the upper portion of the first threaded member is provided with a convex portion, or the upper portion of the fixing member is provided with a convex portion, and the upper portion of the first threaded member is provided with a groove; The groove cooperates with the protrusion to enable the first threaded member to be rotatably connected to the fixing member.

[0008] As an optional embodiment, the fixing member, the first threaded member, and the second threaded member are all annular structures; The fixing member is sleeved on the outside of the second threaded member, the second threaded member is sleeved on the outside of the first threaded member, and the first threaded member is sleeved on the outside of the second mounting portion; Furthermore, the lower portion of the second mounting portion is connected to the lower portion of the second screw member.

[0009] As an optional embodiment, the heating structure also includes a first air guide channel, a first ventilation hole is provided on the second mounting part, a second ventilation hole is provided on the first mounting part, the first end of the first air guide channel is connected to the interior of the second mounting part and the interior of the container through the first ventilation hole, and the second end of the first air guide channel is connected to the second ventilation hole.

[0010] As an optional embodiment, a second ventilation hole is provided on the first mounting portion, and a second air guide channel extending inwardly is provided on the first mounting portion at the position of the second ventilation hole, and a first end portion of the second air guide channel is in communication with the second ventilation hole; Furthermore, the second end portion of the first air guiding channel and the second end portion of the second air guiding channel are nested with each other and communicate with each other.

[0011] As an optional embodiment, the heating structure further includes a first rotating impeller and a second driving member, the first rotating impeller is transmission-connected to the output end of the second driving member, and the first rotating impeller is disposed inside the second mounting portion.

[0012] As an optional embodiment, the heating element is an electric heating tube, and the first rotating impeller is arranged on the upper part of the electric heating tube; Alternatively, the heating element is an electric heating film, which is arranged on the blade surface of the first rotating impeller and / or the inner side wall of the second mounting portion.

[0013] As an optional embodiment, the heating structure further includes a second rotating impeller and a third mounting portion, the second rotating impeller is transmission-connected to the output end of the second driving member, the second driving member is disposed on the third mounting portion, the third mounting portion is disposed above the second mounting portion, and the third mounting portion is disposed inside the first mounting portion; The second rotating impeller is arranged inside the third mounting part, the third mounting part is provided with a third ventilation hole and a fourth ventilation hole, the first mounting part is provided with a fifth ventilation hole, the third ventilation hole is connected to the middle part of the first air guide channel, and the fourth ventilation hole is connected to the outside of the first mounting part through the fifth ventilation hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The heating structure in the present invention is movably arranged on the first mounting portion through a lifting structure. The lifting structure drives the heating structure to move up and down inside the container. The heating structure can be adjusted in the heating height direction according to foods of different heights to improve the heating efficiency of the heating structure and shorten the cooking time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the external structure of an embodiment of the present invention from a first perspective.

[0017] Figure 2 It is a schematic diagram of the decomposition structure of an embodiment of the present invention.

[0018] Figure 3 It is a structural diagram of the second split body of an embodiment of the present invention.

[0019] Figure 4 2 is a structural diagram of the external structure of an embodiment of the present invention from a second perspective.

[0020] Figure 5 This is an embodiment of the present invention Figure 4 Schematic diagram of the internal structure in the AA direction.

[0021] Figure 6 This is an embodiment of the present invention Figure 4 Schematic diagram of the internal structure in the BB direction.

[0022] Figure 7 This is an embodiment of the present invention Figure 6 Schematic diagram of the local enlarged structure.

[0023] Figure 8 It is a schematic diagram of the exploded structure of the lifting structure of an embodiment of the present invention.

[0024] Figure 9 Schematic diagram of the structure of the fixing member according to an embodiment of the present invention.

[0025] Figure 10 It is a structural schematic diagram of the heating structure of an embodiment of the present invention from a first perspective.

[0026] Figure 11 2 is a schematic structural diagram of the heating structure according to the second perspective of the embodiment of the present invention.

[0027] Description of main reference numerals: 10. Container, 101. Chamber, 102. Opening, 20. Mounting structure, 201. First mounting portion, 2011. Second ventilation hole, 2012. Second air guide channel, 2013. Fifth ventilation hole, 2014. First split body, 2015. Second split body, 30. Heating structure, 301. Second threaded member, 302. Second mounting portion, 3021. First ventilation hole, 303. Heating member, 304. First air guide channel, 305. First rotating impeller, 306. Second driving member, 307. Second rotating impeller, 308. Third mounting portion, 3081. Third ventilation hole, 3082. Fourth ventilation hole, 40. Lifting structure, 401. First driving member, 402. Transmission mechanism, 4021. Gear, 403. First threaded member, 4031. Ring gear, 4032. Protrusion, 404. Fixing member, 4041. Groove. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0030] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0031] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0032] Furthermore, the terms "first," "second," and the like are primarily used to distinguish different devices, elements, or components (which may or may not be the same in type and configuration) and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0033] The technical solution of the present invention will be further described below in conjunction with embodiments and drawings.

[0034] See Figures 1 to 11 The present invention provides a lifting cooking utensil, comprising: a container 10, wherein a cavity 101 for placing food is formed inside the container 10; a mounting structure 20, wherein the mounting structure 20 has a first mounting portion 201 corresponding to the opening position of the container 10; a heating structure 30; and a lifting structure 40, wherein the heating structure 30 is movably arranged on the first mounting portion 201 through the lifting structure 40, and the lifting structure 40 drives the heating structure 30 to move up and down inside the container 10.

[0035] The heating structure 30 in the present invention is movably arranged on the first mounting portion 201 through the lifting structure 40. The lifting structure 40 drives the heating structure 30 to move up and down inside the container 10. The heating structure 30 can be adjusted in the heating height direction according to food of different heights to improve the heating efficiency of the heating structure 30 and shorten the cooking time.

[0036] It should be noted that the lifting structure 40 drives the heating structure 30 to enter the interior of the container 10 from the opening of the container 10 and move up and down.

[0037] The lifting cooking appliance can be used as an air fryer. When the lifting cooking appliance is used as an air fryer, a support for placing food can be provided inside the container 10.

[0038] The air fryer in the related art has a flip-top or pull-out type, such as Figure 2The container 10 is an open pot-shaped structure, and its opening 102 is connected to the internal chamber 101. The mounting structure 20 is a cover structure. At this time, the mounting structure 20 is covered at the opening position of the container 10, and the mounting structure 20 is movably connected to the container 10 by a hinge or a buckle. The lifting cooking utensil can be used as a flip-top air fryer; in order to avoid mutual interference, when the heating structure 30 rises to the highest point of the stroke, the mounting structure 20 can be flipped.

[0039] Of course, in other embodiments, when the lifting cooking utensil is used as a pull-out air fryer, the mounting structure 20 is a mounting seat structure, and the interior of the mounting structure 20 forms a heating cavity for pushing the container 10 into, and the first mounting portion 201 is arranged at the top of the heating cavity; when the container 10 is pushed into the heating cavity of the mounting structure 20 for heating, the first mounting portion 201 is placed at the opening position of the container 10; when the heating structure 30 rises to the highest point of the stroke, the container 10 can be pulled out to avoid interference between the heating structure 30 and the container 10.

[0040] When the food placed in the container 10 is large in height, that is, the food placed in the container 10 is high, for example, the food placed in the container 10 is potatoes, and its height is 3cm-5cm, the lifting structure 40 drives the heating structure 30 to rise so that there is an appropriate distance between the heating structure 30 and the upper surface of the food, for example, a distance of 1cm-3cm.

[0041] When the food placed in the container 10 is relatively small in height, that is, the food placed in the container 10 is relatively short, for example, the food placed in the container 10 is potato chips or French fries obtained by cutting potatoes, and its height is 0.5 cm-3 cm, the lifting structure 40 drives the heating structure 30 to descend so that there is an appropriate distance between the heating structure 30 and the upper surface of the food, for example, a distance of 1 cm-3 cm.

[0042] Thus, the heating structure 30 can be adjusted in the heating height direction according to foods of different heights, and the heating structure 30 and foods of different heights can maintain an appropriate distance, so that the heating structure 30 can better cook the food inside the container 10.

[0043] It should be noted that Figures 5 to 7 In the process, the heating structure 30 rises to the highest point of the stroke, and the lifting structure 40 can drive the heating structure 30 along the Figures 5 to 7 The direction of arrow a is downward movement.

[0044] In an embodiment of the present invention, the lifting structure 40 includes a first driving member 401, a transmission mechanism 402, a first threaded member 403 and a fixing member 404, and the fixing member 404 is arranged inside the first mounting portion 201; the first driving member 401 is arranged on the fixing member 404, and the output end of the first driving member 401 is transmission-connected to the first threaded member 403 through the transmission mechanism 402; the heating structure 30 includes a second threaded member 301, a second mounting portion 302 and a heating member 303, the second mounting portion 302 is arranged on the second threaded member 301, and the heating member 303 is arranged inside the second mounting portion 302; the first threaded member 403 is threadedly connected to the second threaded member 301, and the first threaded member 403 and the second threaded member 301 are nested; the first driving member 401 drives the first threaded member 403 to rotate through the transmission mechanism 402, and the first threaded member 403 drives the second threaded member 301 to move up and down by rotating, and the second mounting portion 302 and the heating member 303 move up and down following the second threaded member 301.

[0045] It should be noted that the fixing member 404 and the first mounting portion 201 can be detachably connected as one by snap-fitting or threaded connection, and the fixing member 404 and the first mounting portion 201 can also be fixedly connected as one by welding or bonding. The connection method between the fixing member 404 and the first mounting portion 201 depends on the actual situation and is not limited.

[0046] The second mounting portion 302 and the second threaded member 301 can be detachably connected as one by snapping or threading, or fixedly connected as one by welding or bonding. The connection method between the second mounting portion 302 and the second threaded member 301 depends on actual conditions and is not limited.

[0047] For example, see Figure 2 、 Figures 5 to 11 The second threaded member 301 is sleeved on the outside of the first threaded member 403 , the first threaded member 403 and the second threaded member 301 are coaxially arranged, and the second threaded member 301 rises and falls along the axial direction of the first threaded member 403 .

[0048] The outer wall of the first threaded member 403 is provided with a first threaded area, and the height of the first threaded area is h1. The inner wall of the second threaded member 301 is provided with a second threaded area, and the up and down stroke of the second threaded member 301 is h, h≤h1.

[0049] Since the first threaded member 403 and the second threaded member 301 are nested, when the second threaded member 301 is lifted and lowered along the axial direction of the first threaded member 403, the circumferential force on the second threaded member 301 is relatively uniform, and the second threaded member 301 can be lifted and lowered relatively smoothly, so that the second threaded member 301 can drive the second mounting portion 302 and the heating member 303 to be lifted and lowered relatively smoothly, thereby reducing the uneven heating of food due to the instability of the second mounting portion 302 and the heating member 303.

[0050] Since the threaded connection has a self-locking characteristic, when the first driving member 401 stops working, the first threaded member 403 stops rotating, the second threaded member 301 stops rising and falling, and the second threaded member 301 remains at the current height.

[0051] The internal chamber 101 of the container 10 is the theoretical cooking cavity of the lift-type cooking utensil, the second mounting portion 302 is a cover structure, and the space enclosed between the second mounting portion 302 and the container 10 is the actual cooking cavity of the lift-type cooking utensil; when the heating structure 30 moves upward to the highest point of its travel, the space enclosed between the second mounting portion 302 and the container 10 is the maximum cooking cavity, and when the heating structure 30 moves downward to the lowest point of its travel, the space enclosed between the second mounting portion 302 and the container 10 is the minimum cooking cavity; that is, the volume of the actual cooking cavity of the lift-type cooking utensil is variable, and the volume of the actual cooking cavity changes with the lifting and lowering of the heating structure 30.

[0052] When the heating structure 30 descends inside the container 10, the distance between the heating structure 30 and the upper surface of the food is more appropriate, avoiding an excessive distance between the heating element 303 and the upper surface of the food. The volume of the actual cooking cavity of the lifting cooking appliance is reduced, so that the height of the food cooked by the lifting cooking appliance matches the volume of the actual cooking cavity. This not only improves the heating efficiency and shortens the cooking time, but also makes it easier for the lifting cooking appliance to control the cooking effect by controlling the power.

[0053] When the heating structure 30 rises inside the container 10, the distance between the heating structure 30 and the upper surface of the food is more appropriate, avoiding the distance between the heating element 303 and the upper surface of the food being too small, and the actual cooking cavity volume of the lifting cooking appliance increases, so that the height of the food cooked by the lifting cooking appliance matches the actual cooking cavity volume. This not only improves the heating efficiency and shortens the cooking time, but also makes it easier for the lifting cooking appliance to control the cooking effect by controlling the power.

[0054] Furthermore, in order to facilitate maintaining a relatively accurate distance between the heating structure 30 and the upper surface of the food, a distance measuring sensor can be provided on the heating structure 30. The distance measuring sensor can directly adopt an existing infrared sensor, ultrasonic sensor or radar sensor, etc. The distance measuring sensor is electrically connected to the first driving member 401. The distance measuring sensor can detect the straight-line distance between the highest position of the upper surface of the food located in the cooking cavity and the heating structure 30, and determine the working stroke of the first driving member 401 based on the data detected by the distance measuring sensor.

[0055] The data detected by the ranging sensor can be read manually and the first driving member 401 can be started and stopped. Alternatively, a controller can be provided, which is electrically connected to the ranging sensor and the first driving member 401, and the data detected by the ranging sensor is transmitted to the controller, which controls the start and stop of the first driving member 401.

[0056] It should be noted that the first driving member 401 may be a motor.

[0057] In the embodiment of the present invention, the transmission mechanism 402 includes a gear 4021 , the output end of the first driving member 401 is in transmission connection with the gear 4021 , a gear ring 4031 is provided on the upper portion of the first threaded member 403 , and the gear 4021 and the gear ring 4031 are meshed with each other.

[0058] For example, see Figure 8 , gear 4021 is a spur gear, and gear 4021 and ring gear 4031 are both arranged along the transverse direction, that is, the central axis of gear 4021 and the central axis of ring gear 4031 are arranged parallel to each other, and the central axis of gear 4021 and the central axis of ring gear 4031 are both arranged along the longitudinal direction; ring gear 4031 is arranged inside the first threaded member 403, and gear 4021 is arranged inside the ring gear 4031, and meshing teeth are provided on gear 4021 and ring gear 4031.

[0059] Since the gear 4021 and the gear ring 4031 are both arranged along the transverse direction and the gear ring 4031 is arranged inside the first threaded member 403, the overall structure of the lifting structure 40 is more compact, reducing the space occupied by the lifting structure 40 in the longitudinal space.

[0060] The output end of the first driving member 401 is its output shaft, and a square hole is provided at the center position of the gear 4021. The output shaft of the first driving member 401 is inserted into the square hole to drive the gear 4021 to rotate, thereby realizing a transmission connection between the output end of the first driving member 401 and the gear 4021, and the gear 4021 drives the ring gear 4031 to rotate by rotating.

[0061] It should be noted that when the gear 4021 is a spur gear, the gear 4021 can also be set along the longitudinal direction. At this time, the setting direction of the ring gear 4031 needs to match the gear 4021 to achieve meshing between the gear 4021 and the ring gear 4031.

[0062] In some other embodiments, the gear 4021 may also be a helical gear. When the gear 4021 is a helical gear, the shape and setting direction of the ring gear 4031 need to match the gear 4021 to achieve meshing between the gear 4021 and the ring gear 4031.

[0063] In the embodiment of the present invention, a groove 4041 is provided on the upper portion of the fixing member 404, and a protrusion 4032 is provided on the upper portion of the first threaded member 403. The groove 4041 cooperates with the protrusion 4032 to enable the first threaded member 403 to be rotatably connected to the fixing member 404.

[0064] For example, see Figure 8 as well as Figure 9 The convex portion 4032 is annular and is arranged along the edge of the first threaded member 403. Since the groove 4041 cooperates with the convex portion 4032 and the groove 4041 is also annular, the first threaded member 403 is rotatedly connected by cooperating with the groove 4041 of the fixing member 404 through the convex portion 4032.

[0065] For example, when the output end of the first driving member 401 drives the first threaded member 403 to rotate in the positive direction by rotating in the positive direction, the first threaded member 403 rotates in the positive direction in the groove 4041, and the groove 4041 limits the up and down movement of the first threaded member 403. Since the second threaded member 301 is threadedly connected to the first threaded member 403, the second threaded member 301 rises along the first threaded member 403.

[0066] When the output end of the first driving member 401 drives the first threaded member 403 to rotate in the opposite direction by rotating in the opposite direction, the first threaded member 403 rotates in the opposite direction in the groove 4041, and the groove 4041 limits the up and down movement of the first threaded member 403. Since the second threaded member 301 is threadedly connected to the first threaded member 403, the second threaded member 301 descends along the first threaded member 403 (in the direction of arrow a).

[0067] The positive direction is clockwise and the negative direction is counterclockwise, or the positive direction is counterclockwise and the negative direction is clockwise.

[0068] In some other embodiments, a protrusion 4032 is provided on the upper portion of the fixing member 404 , and a groove 4041 is provided on the upper portion of the first threaded member 403 .

[0069] Therefore, the groove 4041 can be provided on the fixing member 404 or the first threaded member 403 to enable the first threaded member 403 to be rotatably connected to the fixing member 404 .

[0070] In an embodiment of the present invention, the fixing member 404, the first threaded member 403 and the second threaded member 301 are all annular structures; the fixing member 404 is sleeved on the outside of the second threaded member 301, the second threaded member 301 is sleeved on the outside of the first threaded member 403, and the first threaded member 403 is sleeved on the outside of the second mounting portion 302; and the lower part of the second mounting portion 302 is connected to the lower part of the second threaded member 301.

[0071] For example, see Figures 5 to 11 The inner diameter of the fixing member 404 is larger than the outer diameter of the second threaded member 301, and the inner diameter of the second threaded member 301 is adapted to the outer diameter of the first threaded member 403 to form a threaded connection. The inner diameter of the first threaded member 403 is larger than the outer diameter of the second mounting portion 302. Since the fixing member 404, the first threaded member 403, the second threaded member 301 and the second mounting portion 302 form a multi-layer nested structure, the multi-layer nested structure fully utilizes the internal space of the first mounting portion 201. The fixing member 404, the first threaded member 403, the second threaded member 301 and the second mounting portion 302 can be arranged more compactly inside the first mounting portion 201, reducing its space occupancy in the longitudinal direction.

[0072] Since the fixing member 404 is sleeved on the outside of the second threaded member 301, the inner wall of the fixing member 404 and the outer wall of the second threaded member 301 are clearance-matched (clearance 0.1mm-0.5mm), and guidance is achieved through sliding contact, so that the fixing member 404 guides the up and down movement of the second threaded member 301.

[0073] Since the upper part of the first threaded member 403 is rotatably connected to the upper part of the fixing member 404, an "n"-shaped structure is formed; since the lower part of the second mounting portion 302 is connected to the lower part of the second threaded member 301, the second threaded member 301 is arranged at the edge of the second mounting portion 302, and the second mounting portion 302 and the second threaded member 301 form an "J"-shaped structure; thus, the above-mentioned "n"-shaped structure and the above-mentioned "J"-shaped structure are respectively plugged into each other through their respective opening parts, making the structure of the lifting cooking utensil more compact and the connection more stable.

[0074] In an embodiment of the present invention, the heating structure 30 also includes a first air guide channel 304, a first ventilation hole 3021 is provided on the second mounting portion 302, and a second ventilation hole 2011 is provided on the first mounting portion 201. The first end of the first air guide channel 304 is connected to the interior of the second mounting portion 302 and the interior of the container 10 through the first ventilation hole 3021, and the second end of the first air guide channel 304 is connected to the second ventilation hole 2011.

[0075] For example, see Figures 5 to 7 When the lifting cooking appliance heats and cooks food, the temperature and pressure in the space enclosed between the second mounting portion 302 and the container 10 increase, and the air inside the cooking cavity can be discharged from the lifting cooking appliance through the first ventilation hole 3021, the first air guide channel 304 and the second ventilation hole 2011, thereby preventing the temperature and pressure in the space enclosed between the second mounting portion 302 and the container 10 from being too high.

[0076] In an embodiment of the present invention, a second ventilation hole 2011 is provided on the first mounting portion 201, and a second air guide channel 2012 extending inward is provided on the first mounting portion 201 at the position of the second ventilation hole 2011, and the first end of the second air guide channel 2012 is connected to the second ventilation hole 2011; and the second end of the first air guide channel 304 and the second end of the second air guide channel 2012 are nested and connected to each other.

[0077] For example, continue to see Figures 5 to 7 Since the second end of the first air guiding channel 304 and the second end of the second air guiding channel 2012 are nested with each other, when the first air guiding channel 304 moves up and down following the second mounting portion 302, the first air guiding channel 304 rises and falls along the second air guiding channel 2012, and the second air guiding channel 2012 guides and supports the up and down movement of the first air guiding channel 304.

[0078] Continue reading Figure 7 The first air guiding channel 304 is sleeved on the outside of the second air guiding channel 2012, and the first air guiding channel 304 is slidingly connected to the second air guiding channel 2012; of course, in other embodiments, the first air guiding channel 304 can be inserted into the inside of the second air guiding channel 2012.

[0079] In the embodiment of the present invention, the heating structure 30 further includes a first rotating impeller 305 and a second driving member 306 . The first rotating impeller 305 is transmission-connected to the output end of the second driving member 306 . The first rotating impeller 305 is disposed inside the second mounting portion 302 .

[0080] For example, see Figure 5 、 Figure 6 as well as Figure 10The second driving member 306 can be a motor, which drives the first rotating impeller 305 to rotate. The first rotating impeller 305 forms a vortex inside the container 10 through rotation, thereby transporting the heat generated by the heating member 303 to various parts of the interior of the container 10. The vortex can accelerate the circulation of hot air and reduce the local temperature difference of the food. Therefore, the lifting cooking appliance can heat the food placed in the container 10 more evenly during cooking.

[0081] In the embodiment of the present invention, the heating element 303 is an electric heating tube, and the first rotating impeller 305 is arranged on the upper part of the electric heating tube.

[0082] For example, the electric heating tube may be an annular stainless steel tube with a built-in nickel-chromium alloy heating wire, with a tube diameter of 8mm-12mm, arranged around the inner wall of the second mounting portion 302 to ensure uniform heat radiation.

[0083] For example, continue to see Figure 5 、 Figure 6 as well as Figure 10 Since the first rotating impeller 305 is arranged on the upper part of the heating element 303, when the first rotating impeller 305 rotates, it is convenient to transport the heat generated by the heating element 303 to the lower part, thereby facilitating the heat generated by the heating element 303 to various parts inside the container 10.

[0084] In other embodiments, the heating element 303 is an electric heating film, which is disposed on the blade surface of the first rotating impeller 305 and / or the inner side wall of the second mounting portion 302 .

[0085] It should be noted that the electric heating film is a flexible film, which is fixed to the blade surface and / or the inner wall of the second mounting portion 302 by pasting or sputtering. The electric heating film can directly adopt the existing electric heating film. The working principle of the electric heating film is the existing technology and will not be repeated here.

[0086] The heating film on the blade surface rotates with the first rotating impeller 305 to enhance hot air convection, and the heating film on the inner wall of the second mounting portion 302 can form a stable heat radiation surface. The combination of the two can improve heat diffusion efficiency.

[0087] Therefore, the specific form of the heating element 303 is selected according to the actual application scenario and is not limited.

[0088] In an embodiment of the present invention, the heating structure 30 also includes a second rotating impeller 307 and a third mounting portion 308. The second rotating impeller 307 is transmission-connected to the output end of the second driving member 306. The second driving member 306 is arranged on the third mounting portion 308, and the third mounting portion 308 is arranged on the upper part of the second mounting portion 302, and the third mounting portion 308 is arranged inside the first mounting portion 201; the second rotating impeller 307 is arranged inside the third mounting portion 308, and the third mounting portion 308 is provided with a third ventilation hole 3081 and a fourth ventilation hole 3082, and the first mounting portion 201 is provided with a fifth ventilation hole 2013. The third ventilation hole is connected to the middle part of the first air guide channel 304, and the fourth ventilation hole 3082 is connected to the outside of the first mounting portion 201 through the fifth ventilation hole 2013.

[0089] For example, see Figure 5 、 Figure 6 as well as Figure 11 The third mounting portion 308 is a cover structure, and the middle portion of the first air guide channel 304 is an area 1 / 3-2 / 3 of the length away from its first end portion; the third ventilation hole 3081 connects the interior of the third mounting portion 308 with the interior of the first air guide channel 304; the fourth ventilation hole 3082 connects the interior of the third mounting portion 308 and the outside of the third mounting portion 308, and the fifth ventilation hole 2013 connects the interior of the first mounting portion 201 and the outside of the first mounting portion 201.

[0090] When the second driving member 306 rotates, it simultaneously drives the first rotating impeller 305 and the second rotating impeller 307 to rotate, thereby reducing the number of driving elements provided and utilizing the first rotating impeller 305 to achieve heat diffusion inside the container 10.

[0091] During the rotation of the second rotating impeller 307, the air outside the first mounting part 201 enters between the first mounting part 201 and the third mounting part 308 through the fifth ventilation hole 2013, then enters the interior of the third mounting part 308 through the fourth ventilation hole 3082, and then enters the first air guide channel 304 and the second air guide channel 2012 through the third ventilation hole 3081 and is discharged to the outside of the first mounting part 201 through the second ventilation hole 2011, so as to cool the third mounting part 308, the first mounting part 201 and the second driving member 306.

[0092] The first mounting portion 201 can be integrally formed or connected in two parts. When the first mounting portion 201 is formed by connecting a first part 2014 and a second part 2015, the first part 2014 and the second part 2015 can be detachably connected as a whole by snap connection or threaded connection. The first part 2014 and the second part 2015 can also be fixedly connected as a whole by welding or bonding. The connection method between the first part 2014 and the second part 2015 depends on actual conditions and is not limited.

[0093] For example, see Figure 2 The first split body 2014 is the main body, the second split body 2015 is the cover plate, and the second air guide channel 2012 is set at the bottom of the second split body 2015.

[0094] The fifth ventilation hole 2013 may be provided on the first split body 2014 , or the fifth ventilation hole 2013 may be provided on the second split body 2015 , or the fifth ventilation hole 2013 may be provided between the first split body 2014 and the second split body 2015 .

[0095] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A lifting cooking appliance, characterized in that: include: a container, wherein the interior of the container forms a cavity for placing food; a mounting structure having a first mounting portion corresponding to an opening position of the container; Heating structure; A lifting structure, wherein the heating structure is movably arranged on the first mounting portion through the lifting structure, and the lifting structure drives the heating structure to move up and down inside the container.

2. The lifting cooking appliance according to claim 1, characterized in that: The lifting structure includes a first driving member, a transmission mechanism, a first threaded member and a fixing member, wherein the fixing member is arranged on the first mounting portion; The first driving member is arranged on the fixing member, and the output end of the first driving member is transmission-connected to the first threaded member through the transmission mechanism; The heating structure includes a second threaded member, a second mounting portion, and a heating member, wherein the second mounting portion is arranged on the second threaded member, and the heating member is arranged inside the second mounting portion; The first threaded member is threadedly connected to the second threaded member, and the first threaded member and the second threaded member are nested; The first driving member drives the first threaded member to rotate through the transmission mechanism, and the first threaded member drives the second threaded member to move up and down through the rotation, and the second mounting portion and the heating member move up and down relative to the first mounting portion following the second threaded member.

3. The lifting cooking appliance according to claim 2, characterized in that: The transmission mechanism includes a gear, the output end of the first driving member is in transmission connection with the gear, a gear ring is provided on the upper portion of the first threaded member, and the gear and the gear ring are meshed with each other.

4. The lifting cooking appliance according to claim 2, characterized in that: The upper portion of the fixing member is provided with a groove, and the upper portion of the first threaded member is provided with a convex portion, or the upper portion of the fixing member is provided with a convex portion, and the upper portion of the first threaded member is provided with a groove; The groove cooperates with the protrusion to enable the first threaded member to be rotatably connected to the fixing member.

5. The lifting cooking appliance according to claim 2, characterized in that: The fixing member, the first threaded member and the second threaded member are all annular structures; The fixing member is sleeved on the outside of the second threaded member, the second threaded member is sleeved on the outside of the first threaded member, and the first threaded member is sleeved on the outside of the second mounting portion; Furthermore, the lower portion of the second mounting portion is connected to the lower portion of the second screw member.

6. The lifting cooking appliance according to any one of claims 2 to 5, characterized in that: The heating structure also includes a first air guide channel, a first ventilation hole is provided on the second mounting part, a second ventilation hole is provided on the first mounting part, a first end of the first air guide channel is connected to the interior of the second mounting part and the interior of the container through the first ventilation hole, and a second end of the first air guide channel is connected to the second ventilation hole.

7. The lifting cooking appliance according to claim 6, characterized in that: The first mounting portion is provided with the second ventilation hole, and the first mounting portion is provided with a second air guide channel extending inward at the position of the second ventilation hole, and a first end portion of the second air guide channel is connected to the second ventilation hole; Furthermore, the second end portion of the first air guiding channel and the second end portion of the second air guiding channel are nested with each other and communicate with each other.

8. The lifting cooking appliance according to claim 6, characterized in that: The heating structure further includes a first rotating impeller and a second driving member. The first rotating impeller is transmission-connected to an output end portion of the second driving member. The first rotating impeller is disposed inside the second mounting portion.

9. The lifting cooking appliance according to claim 8, characterized in that: The heating element is an electric heating tube, and the first rotating impeller is arranged on the upper part of the electric heating tube; Alternatively, the heating element is an electric heating film, and the electric heating film is arranged on the blade surface of the first rotating impeller and / or the inner side wall of the second mounting portion.

10. The lifting cooking appliance according to claim 8, characterized in that: The heating structure further includes a second rotating impeller and a third mounting portion, wherein the second rotating impeller is drivingly connected to the output end of the second driving member, the second driving member is disposed on the third mounting portion, the third mounting portion is disposed above the second mounting portion, and the third mounting portion is disposed inside the first mounting portion; The second rotating impeller is arranged inside the third mounting part, the third mounting part is provided with a third ventilation hole and a fourth ventilation hole, the first mounting part is provided with a fifth ventilation hole, the third ventilation hole is connected to the middle part of the first air guide channel, and the fourth ventilation hole is connected to the outside of the first mounting part through the fifth ventilation hole.

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