Cover assembly and cooking apparatus

Abstract

The embodiment of the present application provides a cover assembly and a cooking device. The cover assembly comprises: a head, the bottom of the head is provided with a heating element; a guide fan blade, rotatably arranged above the heating element, used for blowing hot air; a protective cover, rotatably arranged below the head and located on the outer side of the heating element, the protective cover is provided with a spoiler rib, the spoiler rib can be pushed by the wind power generated by the guide fan blade to drive the protective cover to rotate. On the one hand, the hot air generated by the rotating protective cover can disturb the heating element, and on the other hand, the hot air on the inner side of the protective cover can be uniformly distributed, and on the other hand, the local high temperature discoloration or even burning of the protective cover can be avoided, and the defect of uneven heating of the heating element in the circumferential direction can be compensated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cooking equipment, in particular to a cover assembly and a cooking equipment. BACKGROUND

[0002] The heating tube of the current air fryer is usually in a non-closed ring structure, both ends of the opening of the heating tube are provided with terminal posts extending into the machine head to connect the power supply, and in order to improve safety, the heating tube is shielded by a protective cover, the protective cover is provided with ventilation holes, and the hot air generated by the heating tube is blown into the pot body through the ventilation holes by the guide fan blades to realize heating of the food. However, in the working process, the heating tube generates heat unevenly in the circumferential direction, the temperature is lower at the non-closed opening, and the temperature is higher at the solid part of the heating tube, which will cause uneven distribution of heat inside the protective cover and local discoloration and burning of the protective cover due to high temperature. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a cover assembly and a cooking equipment to at least solve the problem of uneven heat distribution inside the protective cover and local discoloration and burning of the protective cover due to high temperature.

[0004] The first aspect of the present application provides a cover assembly, which comprises: a machine head, the bottom of the machine head is provided with a heating element; a guide fan blade, which is rotatably arranged above the heating element and is used for blowing hot air; and a protective cover, which is rotatably arranged below the machine head and is located at the outer periphery of the heating element, and the protective cover is provided with a turbulence rib, which can be pushed by the wind power generated by the guide fan blade to drive the protective cover to rotate.

[0005] The cover assembly provided by the present application comprises a machine head, a guide fan blade and a protective cover. The protective cover shields the heating element on the outside to avoid accidental triggering of the heating element by the user and improve safety. The protective cover is provided with a turbulence rib, which can be pushed by the wind power generated by the guide fan blade to drive the protective cover to rotate. On the one hand, the hot air generated by the rotating protective cover can be disturbed to promote the uniform distribution of the hot air on the inside of the protective cover, and on the other hand, the local high temperature discoloration or even burning of the protective cover can be avoided, which can compensate for the uneven heating of the heating element in the circumferential direction. Moreover, the protective cover can rotate relatively slowly, which eliminates the need for an additional driving motor to drive the protective cover to rotate, reduces the number of parts and saves costs. In addition, compared with the hot air directly blowing to the protective cover, the design of the turbulence rib is more convenient to face the hot air, so as to rotate smoothly under the push of the hot air.

[0006] In addition, the cover assembly provided by the above-mentioned embodiments of the present application can have the following additional technical features:

[0007] In some embodiments, the cover assembly further comprises: a first motor arranged in the handpiece, an auxiliary driving portion being arranged on an output shaft of the first motor, and the protective cover being capable of rubbing against the auxiliary driving portion during rotation of the protective cover under the action of wind, so that the first motor assists the rotation of the protective cover under the action of friction.

[0008] In these embodiments, the rotation of the protective cover under the action of wind is assisted by the first motor, which can avoid the situation that oil dirt sticks to the protective cover and causes the protective cover to be unable to rotate, and realizes smooth rotation of the protective cover under the action of wind and electrical assistance. Specifically, during the rotation of the protective cover under the action of wind, the centrifugal force generated by the protective cover will cause the protective cover to deviate and rub against the auxiliary driving portion, and the protective cover is in contact with the output shaft of the first motor through the auxiliary driving portion, so that the first motor can assist the rotation of the protective cover under the action of friction.

[0009] In some embodiments, the protective cover is provided with a mounting hole, and the auxiliary driving portion is inserted into the mounting hole and gap-fitted with the mounting hole. Specifically, during the rotation of the protective cover, the inner wall of the mounting hole can deviate and be in contact with the auxiliary driving portion, and in the case that the output shaft of the first motor simultaneously rubs against the auxiliary driving portion, the first motor can intermittently drive the rotation of the protective cover through the friction between the output shaft and the auxiliary driving portion and the friction between the auxiliary driving portion and the mounting hole.

[0010] Further, the mounting hole is located on the rotation center line of the protective cover.

[0011] In some embodiments, the auxiliary driving portion is located on the inner side of the protective cover and gap-fitted with the side wall of the protective cover. Thus, during the rotation of the protective cover, the protective cover can deviate and make the inner surface of the side wall thereof in contact with the auxiliary driving portion, and the output shaft of the first motor can assist the rotation of the protective cover under the action of friction between the auxiliary driving portion and the side wall of the protective cover. At this time, the auxiliary driving portion can include a driving ring arranged close to the top or bottom of the side wall of the protective cover, avoiding the heat generating element and the air guide fan blade, and can be in contact with the side wall of the protective cover at multiple circumferential positions.

[0012] In some embodiments, the output shaft of the first motor is further connected with the air guide fan blade to drive the rotation of the air guide fan blade.

[0013] In these embodiments, the air guide fan blade and the protective cover are driven by the same first motor, without the need to independently configure motors for the two, reducing parts and saving costs, which is conducive to reducing the weight of the cover assembly and facilitating the opening operation.

[0014] In some embodiments, the protective cover comprises a cover sidewall surrounding the outer periphery of the heat-generating element, and the turbulence ribs are arranged on the cover sidewall and distributed circumferentially around the rotation center line of the protective cover. In the case that the air guide fan blades are centrifugal fan blades, the hot air blown by the air guide fan blades is easily blown to the turbulence ribs, and the plurality of turbulence ribs are pushed to rotate in the circumferential direction, thereby pushing the protective cover to rotate smoothly. At this time, the protective cover can have a cover bottom wall located below the heat-generating element, or can not have a cover bottom wall.

[0015] Further, the turbulence ribs are vertically distributed or obliquely distributed on the cover sidewall.

[0016] In some embodiments, the protective cover comprises a cover bottom wall located below the heat-generating element, and the turbulence ribs are arranged on the cover bottom wall and distributed circumferentially around the rotation center line of the protective cover. The turbulence ribs extend radially along the cover bottom wall, or the first end of the turbulence ribs is close to the edge of the cover bottom wall, and the second end of the turbulence ribs extends in a direction deviating from the center of the cover bottom wall. The hot air blown by the air guide fan blades can push the plurality of turbulence ribs to rotate in the circumferential direction, thereby pushing the protective cover to rotate smoothly. At this time, the protective cover can have a cover sidewall surrounding the outer periphery of the heat-generating element, or can not have a cover sidewall.

[0017] In some embodiments, the turbulence ribs are arranged on the inner surface of the protective cover. On the one hand, it is convenient to be blown by the hot air to drive the protective cover to rotate, and on the other hand, it is beneficial to disturb the hot air inside the protective cover, so that the hot air is more evenly distributed inside the protective cover.

[0018] In some embodiments, the lower surface of the cover bottom wall of the protective cover is provided with air guide convex ribs which are circumferentially spaced around the center of the cover bottom wall. The air guide convex ribs can rotate with the rotation of the protective cover, and in the case that the cover body assembly is covered on the pot body assembly, the air guide convex ribs can disturb the hot air inside the pot body, thereby facilitating the uniform distribution of the hot air inside the pot body, and thereby improving the uniformity of the heating of the food materials.

[0019] In some embodiments, the cover body assembly further comprises a cover body which is detachably connected to the bottom of the machine head, and the cover body is provided with a through hole through which the heat-generating element passes, and a gap is left between the protective cover and the cover body.

[0020] In these embodiments, the cover body is detachably connected to the machine head, which facilitates the disassembly of the cover body for cleaning. Moreover, the first motor is arranged in the machine head in cooperation with the first motor, which does not interfere with the disassembly of the cover body. Moreover, the cover body has a through hole through which the heat-generating element passes, which facilitates the heating of the food materials below the cover body by the heat-generating element. A gap is left between the protective cover and the cover body to avoid interference between the protective cover and the cover body during rotation.

[0021] In some embodiments, the protective cover comprises a cover sidewall located around the outer periphery of the heat-generating element. It is convenient to block the heat-generating element from the circumferential direction.

[0022] In some embodiments, the protective cover comprises a cover side wall located at the periphery of the heat-generating member and a cover bottom wall located at the bottom of the cover side wall. The protective cover can shield the heat-generating member from below and peripherally, and is safe.

[0023] In some embodiments, the heat-generating member is a heat-generating tube, which is distributed in a non-closed ring shape. The structure is simple, convenient for processing, and also convenient for connecting the terminal posts at the two ends of the heat-generating tube to connect the power supply.

[0024] The second aspect embodiment of the present application provides a cooking device, comprising: a pot body assembly; and a cover body assembly according to any one of the above embodiments, which is covered on the pot body assembly.

[0025] The cooking device provided by the embodiments of the present application has the cover body assembly of any one of the above embodiments, and thus has the beneficial effects of any one of the above embodiments, which will not be described here one by one.

[0026] Further aspects and / or advantages of the present general inventive concept will be set forth in part in the description which follows, and in part will be obvious from the description, or can be learned by practice of the present general inventive concept. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and other objects and features of the present application will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0028] Figure 1 Fig. 1 shows a longitudinal sectional view of a cooking device according to a first embodiment of the present application;

[0029] Figure 2 Fig. 2 shows a partial enlarged view of Fig. 1 at I; Figure 1

[0030] Figure 3 Fig. 3 shows a split view of the cover body assembly of the cooking device according to the first embodiment of the present application when inverted;

[0031] Figure 4 Fig. 4 shows a longitudinal sectional view of a cooking device according to a second embodiment of the present application;

[0032] Figure 5 Fig. 5 shows a partial structural view of the cover body assembly of the cooking device according to the second embodiment of the present application;

[0033] Figure 6 Fig. 6 shows another partial structural view of the cover body assembly of the cooking device according to the second embodiment of the present application;

[0034] Figure 7 Fig. 7 shows a longitudinal sectional view of the cover body assembly of the cooking device according to the second embodiment of the present application in a split state; ​

[0035] Figure 8 Fig. 3 shows a longitudinal sectional view of a cooking apparatus according to a third embodiment of the present application;

[0036] Figure 9 Fig. 4 shows a partial enlarged view of the area J in Fig. 3; Figure 8

[0037] Figure 10 Fig. 5 shows a partial enlarged view of the area K in Fig. 3; Figure 8

[0038] Figure 11 Fig. 6 shows a split view of a cover assembly of a cooking apparatus according to the third embodiment of the present application when inverted;

[0039] Figure 12 Fig. 7 shows a longitudinal sectional view of a cooking apparatus according to a fourth embodiment of the present application;

[0040] Figure 13 Fig. 10 shows a partial enlarged view of the area M in Fig. 7; Figure 12

[0041] Figure 14 Fig. 11 shows a partial enlarged view of the area N in Fig. 7. Figure 12

[0042] Figures 1 to 14 BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 10 head, 101 head seat, 102 inner liner, 103 support column, 104 through hole, 110 heating element, 120 heat dissipation fan blade, 130 air guide fan blade, 140 cover body,

[0044] 210 first motor, 2101 first connecting section, 2102 second connecting section, 211 first mounting nut, 212 second mounting nut, 213 bearing, 214 fourth mounting nut, 215 limiting sleeve, 2151 sleeve main body, 2152 first limiting ring, 2153 support rib, 2154 second limiting ring, 216 shock absorbing sleeve, 2161 clamping groove, 217 sixth mounting nut, 218 shielding cap, 219 seventh mounting nut, 220 second motor, 230 first motor, 231 third mounting nut,

[0045] 40 protective cover, 410 cover side wall, 411 first ventilation hole, 412 plug, 420 cover bottom wall, 421 mounting hole, 422 sunken table, 423 second ventilation hole, 430 first air guide convex rib, 440 turbulence rib,

[0046] 50 transmission assembly, 510 driving gear, 520 driven gear ring, 521 plug-in part, 522 recessed part, 60 support piece, 610 support part, 620 limiting part,

[0047] ​​​​70 pot body. DETAILED DESCRIPTION

[0048] The following detailed description is presented to aid in understanding the method, apparatus and / or system described herein. It is not intended to limit the method, apparatus and / or system described herein to the details described. Rather, various changes, modifications and equivalents can be used, and substitutions can be made, without departing from the scope of the method, apparatus and / or system described herein. For example, the order of the operations described herein can be changed, and various elements can be added, omitted, or combined, as will be apparent to one of skill in the art in light of the disclosure provided herein. Furthermore, features described herein can be omitted for the purpose of clarity and conciseness.

[0049] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided so that this disclosure will be thorough, and will fully convey the scope of the method, apparatus and / or system to one of ordinary skill in the art.

[0050] As used herein, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0051] Although terms such as "first", "second", and "third" can be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, the first element, the first component, the first region, the first layer or the first section referred to in the examples described herein can also be referred to as the second element, the second component, the second region, the second layer or the second section without departing from the teachings of the examples.

[0052] In the description, when an element such as a layer, a region, or a substrate is referred to as being "on" another element, "connected to" or "coupled to" another element, it can be directly on the other element, directly connected to or coupled to the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on" another element, "directly connected to" or "directly coupled to" another element, no other elements are interposed therebetween.

[0053] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" are meant to be interpreted inclusively rather than exclusively, unless otherwise indicated by context. The term "plurality" means any number, including two and more.

[0054] The terms "upper", "lower", "top", "bottom", and the like in the present application are defined based on the position of the product in the normal use state, unless otherwise specified.

[0055] Unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs when read in light of the present application. Unless explicitly defined otherwise herein, terms such as, for example, terms commonly defined in a general dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present application, and should not be interpreted ideally or overly formally.

[0056] The cooking device provided by the embodiment of the present application comprises a cover assembly and a pot assembly, the pot assembly has a pot 70 capable of containing food materials, and the cover assembly covers the pot assembly and is capable of heating the food materials in the pot 70.

[0057] The cover assembly comprises a head 10, a guide fan blade 130, and a protective cover 40. The bottom of the head 10 is provided with a heating element 110. The guide fan blade 130 is rotatably arranged above the heating element 110, and the protective cover 40 is rotatably arranged below the head 10 and outside the heating element 110. The protective cover 40 is capable of rotating outside the heating element 110. The protective cover 40 is provided with a plurality of ventilation holes, and the guide fan blade 130 is capable of blowing the hot air generated by the heating element 110 out of the protective cover 40 through the plurality of ventilation holes to heat the food materials.

[0058] The protective cover 40 blocks the heating element 110 from the outside, which can avoid the user from mistakenly triggering the heating element 110 and improve safety. The protective cover 40 is rotatably arranged below the head 10, specifically rotating around the outer periphery of the protective cover 40. On the one hand, the hot air generated by the heating element 110 can be disturbed by the rotating protective cover 40, which can promote the uniform distribution of the hot air inside the protective cover 40. On the other hand, the protective cover 40 can be prevented from being locally stopped in the high-temperature area of the heating element 110, which can avoid the situation of local high-temperature discoloration or even burning, and can compensate for the defect of uneven heating of the heating element 110 in the circumferential direction.

[0059] As to how to drive the protective cover 40 and the guide fan blade 130 to rotate, in some embodiments, the first motor 230 can be used to independently drive the protective cover 40 to rotate, and the second motor 220 can be used to independently drive the guide fan blade 130 to rotate; the first motor 210 can be used to simultaneously drive the protective cover 40 and the guide fan blade 130 to rotate; the second motor 220 can be used to drive the guide fan blade 130 to rotate, and the protective cover 40 can be driven to rotate under the wind force generated by the guide fan blade 130; the guide fan blade 130 can be driven to rotate not only under the wind force generated by the guide fan blade 130, but also with the aid of the second motor 220 that drives the guide fan blade 130 to rotate.

[0060] The following refers to Figures 1 to 14 The cover assembly and the cooking equipment of some embodiments are described in detail.

[0061] Embodiment one:

[0062] Figure 1 、 Figure 2 and Figure 3 The cover assembly of the first embodiment and the cooking equipment using the cover assembly are shown. As shown in Figure 1 、 Figure 2 and Figure 3 , the cover assembly further includes a first motor 210, which is arranged in the head 10 and used to drive the protective cover 40 to rotate and also used to drive the guide fan blade 130 to rotate.

[0063] In this embodiment, the guide fan blade 130 and the protective cover 40 are driven by the same first motor 210, and there is no need to configure motors independently for the two, which reduces the number of parts, saves costs, helps to reduce the weight of the cover assembly, and facilitates the opening operation. Moreover, the first motor 210 can be used to drive the protective cover 40 to rotate at a relatively high speed, and the uniformity of hot air distribution is good. In addition, the first motor 210 can be used to control the protective cover 40 to stop rotating in time and accurately, so as to avoid the situation that the protective cover 40 continues to rotate after the cover is opened and the user is accidentally injured.

[0064] Further, as shown in Figure 1 and Figure 2 , the output shaft of the first motor 210 includes a first connecting section 2101 connected with the guide fan blade 130 and a second connecting section 2102 connected with the protective cover 40, and the center of the cover bottom wall 420 of the protective cover 40 is provided with a mounting hole 421, and the second connecting section 2102 extends into the mounting hole 421 to drive the protective cover 40 to rotate.

[0065] Further, the mounting hole 421 is a non-circular hole, and the second connecting section 2102 is matched with the mounting hole 421. For example, a D-shaped hole, a square hole, etc., which is conducive to making the output shaft of the first motor 210 drive the protective cover 40 to rotate synchronously and at a relatively high speed.

[0066] For the connection mode of the protective cover 40 and the second connecting segment 2102, further, as shown in Figure 1 and Figure 2 , the part of the second connecting segment 2102 extending out of the mounting hole 421 is provided with a circumferential distribution of external threads, and the first mounting nut 211 is screwed on the external threads and supports the protective cover 40 from below. It can effectively prevent the protective cover 40 from falling off the output shaft, and the installation is convenient and fast.

[0067] Further, as shown in Figure 2 , a limiting ring (not shown in the figure) is sleeved on the annular mounting groove of the second connecting segment 2102, so that the cover bottom wall 420 of the protective cover 40 is limited between the first mounting nut 211 and the limiting ring. As the cover bottom wall 420 is pressed against the limiting ring during the screwing process by the first mounting nut 211, the installation stability of the protective cover 40 is improved, the up-and-down movement of the protective cover 40 during rotation can be avoided, the wear of the output shaft is reduced, and the operating noise is reduced. Moreover, the cover bottom wall 420 is limited between the first mounting nut 211 and the limiting ring, rather than the upper surface of the cover bottom wall 420 directly contacting the second connecting segment 2102, which can reduce the wear probability of the output shaft and the protective cover 40.

[0068] As an example, the limiting ring is a C-shaped buckle. It is convenient to install, and the C-shaped buckle can be laterally clamped in the annular mounting groove from the inside of the protective cover 40 when the second connecting segment 2102 is inserted into the mounting hole 421 of the protective cover 40, without the need to disassemble the protective cover 40 for assembly. Moreover, the C-shaped buckle can tightly hold the second connecting segment 2102 by its own elasticity, even if the second connecting segment 2102 has a certain processing size error, the C-shaped buckle can be tightly held on the second connecting segment 2102, which has good universality and is convenient for processing of the second connecting segment 2102.

[0069] As an example, the limiting ring is a gasket. The structure is simple. During assembly, the gasket can be clamped in the annular mounting groove first, then the second connecting segment 2102 is inserted into the mounting hole 421, and then the first mounting nut 211 is screwed.

[0070] Further, as shown in Figure 1 , the center of the cover bottom wall 420 of the protective cover 40 has a downwardly open sunken platform 422, the mounting hole 421 is provided on the top wall surface of the sunken platform 422, and the first mounting nut 211 is embedded in the sunken platform 422. It can reduce the probability of the first mounting nut 211 contacting the food, reduce the pollution probability, and reduce the occupied space of the pot body 70. In addition, it can also avoid scratching caused by the user accidentally touching the first mounting nut 211.

[0071] For the connection mode of the air guide fan blade 130 and the first connecting segment 2101, further, as shown in Figure 1As shown, the outer periphery of the first connecting section 2101 is provided with external threads, and the cover assembly further comprises a second mounting nut 212 which is screwed on the external threads and supports the air guide fan blade 130 from below. The installation is convenient, and the air guide fan blade 130 can be stably supported to avoid interference with the heat generating element 110, the protective cover 40 and the like when the air guide fan blade 130 moves downward along the output shaft. Moreover, the second mounting nut 212 can rotate synchronously with the output shaft, thereby reducing the wear of the output shaft and the wear between the second mounting nut 212 and the air guide fan blade 130.

[0072] Alternatively, the first connecting section 2101 and the second connecting section 2102 are connected together by threads. The output shaft is of a split structure, which facilitates the connection of the first connecting section 2101 to the air guide fan blade 130 and the connection of the second connecting section 2102 to the protective cover 40. The bottom of the first connecting section 2101 is inserted into the second connecting section 2102, and the upper end surface of the second connecting section 2102 supports the air guide fan blade 130, without the need for additional support structure to support the air guide fan blade 130, thereby simplifying the structure.

[0073] Further, as shown in Figure 1 the cover assembly further comprises a heat dissipation fan blade 120 which is connected to the first connecting section 2101 and located inside the handpiece 10, and the heat dissipation fan blade 120 is used for heat dissipation of the internal components of the handpiece 10. The output shaft of the first motor 210 simultaneously drives the rotation of the heat dissipation fan blade 120, the air guide fan blade 130 and the protective cover 40, and the structure is simple.

[0074] Of course, in the case where the first motor 210 drives the rotation of the protective cover 40, in addition to the case where the output shaft of the first motor 210 and the protective cover 40 are synchronously rotated at high speed, a speed reduction transmission rod assembly can be additionally provided between the output shaft and the protective cover 40. For example, the speed reduction transmission assembly comprises a driving gear 510, a driven gear 520 and a transmission gear, the driving gear 510 is sleeved on the part of the output shaft of the first motor 210 which is higher than the air guide fan blade 130, the driven gear 520 is connected to the top of the side wall of the protective cover 40, and the transmission gear is engaged with the driving gear 510 and the driven gear 520 respectively. The same motor is used to simultaneously drive the rotation of the protective cover 40 and the air guide fan blade 130, but the speed reduction transmission assembly is used to reduce the rotation speed of the protective cover 40.

[0075] For the structure of the protective cover 40, further, as shown in Figure 3 the protective cover 40 comprises a cover side wall 410 and a cover bottom wall 420 located at the bottom of the cover side wall 410, and a plurality of ventilation holes comprise a plurality of first ventilation holes 411 provided on the cover side wall 410 and a plurality of second ventilation holes 423 provided on the cover bottom wall 420. Hot air is blown out of the protective cover 40 through the plurality of first ventilation holes 411 and the plurality of second ventilation holes 423.

[0076] To make the hot air quickly and evenly distributed in the protective cover 40, further, as shown in Figure 3 the inner surface of the cover side wall 410 of the protective cover 40 is provided with a plurality of first air guide ribs 430, which can fully disturb the hot air inside the protective cover 40 as the protective cover 40 rotates, so that the hot air is evenly distributed inside the protective cover 40, avoiding the local high temperature discoloration of the protective cover 40. Moreover, the uniform distribution of hot air inside the protective cover 40 is also conducive to the uniform distribution of hot air flowing out of the protective cover 40, thereby facilitating the uniform heating of the food materials.

[0077] As an example, as shown in Figure 3 the first air vent 411 is in the form of a strip, vertically or obliquely distributed on the cover side wall 410, and a plurality of first air vents 411 are circumferentially spaced around the cover side wall 410. Each first air vent 411 has a convexity protruding inward at one side edge in the width direction of the first air vent 411, and an opening between the convexity and the other side edge in the width direction of the first air vent 411 itself, and the convexity is configured as the first air guide rib 430. Of course, the first air guide rib 430 can also be constructed by a flange structure at one side in the width direction of the first air vent 411.

[0078] Or further, the inner surface of the cover bottom wall 420 of the protective cover 40 is provided with a plurality of first air guide ribs 430, which are circumferentially spaced around the center line of the cover bottom wall 420.

[0079] As an example, a plurality of second air vents 423 are circumferentially spaced around the center line of the cover bottom wall 420. The second end of each second air vent 423 is closer to the center of the cover bottom wall 420 than the first end thereof. Each second air vent 423 has a flange structure protruding inward at one side edge in the width direction of the second air vent 423, and the flange structure is configured as the first air guide rib 430. Among them, the second end of each first air guide rib 430 is closer to the center of the cover bottom wall 420 than the first end thereof. The first air guide rib 430 can cut a part of concentric circles with the center of the cover bottom wall 420 as the center, so that during the rotation of the protective cover 40, the first air guide rib 430 can have a larger windward area, and can better disturb the hot air inside the protective cover 40, with good flow disturbance effect.

[0080] Optionally, each first air guide rib 430 extends radially along the cover bottom wall 420. The flow disturbance is uniform, which is conducive to the uniform distribution of hot air in the pot, and facilitates the machining of the first air guide rib 430 in the set position.

[0081] Optionally, the first end of each first air guide protruding rib 430 is close to the edge of the cover bottom wall 420, and the second end of each first air guide protruding rib 430 extends in a direction deviating from the center of the cover bottom wall 420; wherein the second end of each first air guide protruding rib 430 deviates from the same side of the center of the cover bottom wall 420 at the same angle relative to the first end thereof. For example, the second end of each first air guide protruding rib 430 deviates from the center of the cover bottom wall 420 by 10°, 15° or 30° to the right, and the extension lines of the plurality of first air guide protruding ribs 430 can enclose a regular polygon, thereby achieving good turbulence and increasing the length and windward area of the first air guide protruding rib 430, and thus improving the turbulence effect. Each first air guide protruding rib 430 can extend in a straight line or in an arc shape.

[0082] Optionally, the width of each second air vent hole 423 gradually decreases from the direction of the edge of the cover bottom wall 420 to the direction of the center of the cover bottom wall 420. Since the area of the bottom wall close to the center of the cover bottom wall 420 is smaller, this distribution is conducive to increasing the number of second air vent holes 423 and increasing the overall ventilation area of the plurality of second air vent holes 423, thereby achieving good ventilation.

[0083] Since the first air guide protruding rib 430 is arranged on the cover bottom wall 420 rather than the cover side wall 410, the first air vent hole 411 can be in a strip shape and horizontally arranged on the cover side wall 410. For details, refer to the structure of the protective cover 40 in Figure 11 which has small ventilation resistance and good ventilation.

[0084] To enable the hot air to be quickly and uniformly distributed in the pot body 70, further, a plurality of second air guide protruding ribs (not shown in the figure) are arranged on the lower surface of the cover bottom wall 420 of the protective cover 40, the plurality of second air guide protruding ribs are circumferentially spaced around the center of the cover bottom wall 420, the first end of each second air guide protruding rib is close to the edge of the cover bottom wall 420, and the second end of each second air guide protruding rib is close to the center of the cover bottom wall 420 relative to the first end thereof. For details, refer to the structure of the turbulence rib 440 of the protective cover 40 in Figure 11 which has good turbulence effect.

[0085] Optionally, each second air guide protruding rib extends in the radial direction of the cover bottom wall 420. The turbulence is uniform, which is conducive to uniformly distributing the hot air in the pot, and facilitates the processing of the second air guide protruding rib into a set position.

[0086] Optionally, the first end of each second air guide protruding rib is close to the edge of the cover bottom wall 420, and the second end of each second air guide protruding rib extends in a direction deviating from the center of the cover bottom wall 420; wherein the second end of each second air guide protruding rib deviates from the same side of the center of the cover bottom wall 420 at the same angle relative to the first end thereof. For example, the second end of each second air guide protruding rib deviates from the center of the cover bottom wall 420 by 10°, 15° or 30° to the right, and so on. The extension lines of the plurality of second air guide protruding ribs can enclose a regular polygon, and the air flow is bifurcated, the air disturbance effect is good, and the length of the second air guide protruding rib can be extended, the windward area of the air disturbance rib is increased, and thus the air disturbance effect is improved, so that the hot air is uniformly distributed in the pot body 70.

[0087] Optionally, each second air guide protruding rib is vertically arranged at one side edge of the second air vent hole 423 in the width direction, or each second air guide protruding rib is arranged at one side edge of the second air vent hole 423 in the width direction, and the lower convex end of the second air guide protruding rib extends obliquely to the inside of the adjacent second air vent hole 423.

[0088] Further, in the case where the first air guide protruding rib 430 and the second air guide protruding rib are both arranged on the cover bottom wall 420, the plurality of first air guide protruding ribs 430 and the plurality of second air guide protruding ribs are respectively connected to the edges of different second air vent holes 423, and in the circumferential direction of the protective cover 40, one second air guide protruding rib is distributed between any two adjacent first air guide protruding ribs 430. The air flow can be uniformly disturbed on the inside and outside of the protective cover 40, and the two are not easy to interfere with each other.

[0089] Further, the plurality of air vent holes further include a plurality of third air vent holes arranged on the cover bottom wall 420. The third air vent hole is in the form of a broken ring, and the plurality of third air vent holes are spaced apart on the cover bottom wall 420 in the form of a large ring surrounding a small ring, for example, separated by the plurality of first air guide protruding ribs 430. Specifically similar to the structure of the second air vent hole 423 in Figure 2 Optionally, the third air vent hole is in the form of a circular hole. The ventilation area of the protective cover 40 is increased, and the ventilation is good.

[0090] Further, the cover side wall 410 is in the form of a straight cylinder. Compared with the outward inclination of the cover side wall 410, the occupied space of the protective cover 40 can be reduced, and sufficient space is provided inside to accommodate the air guide fan blades 130 and the heat generating element 110.

[0091] In the present embodiment, since the first motor 210 is used to drive the rotation of the protective cover 40, the first air guide protruding rib 430 can be arranged on the inner surface of the protective cover 40, so that the hot air inside the protective cover 40 is uniformly distributed, and the second air guide protruding rib can be arranged on the outer surface of the protective cover 40, to disturb the hot air in the pot body 70, thereby facilitating the uniform heating of the food material.

[0092] Embodiment two:

[0093] Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The second embodiment of the cover assembly and the cooking device using the cover assembly are shown. As shown in Figure 4 、 Figure 6 and Figure 7 , the cover assembly further comprises a first motor 230 and a second motor 220, both of which are arranged in the head 10, the first motor 230 is connected to the protective cover 40 through the transmission assembly 50 for driving the protective cover 40 to rotate, and the second motor 220 is used to drive the guide fan blade 130 to rotate. Since two motors are used to independently drive the protective cover 40 and the guide fan blade 130 to rotate, it is convenient to independently control the two, and the protective cover 40 and the guide fan blade 130 can have different rotation speeds and start-stop times, etc., which is conducive to the stable rotation of the two at constant or gradually changing rotation speeds.

[0094] For the arrangement position of the first motor 230 and the second motor 220, further, as shown in Figure 4 , the output shaft of the second motor 220, the rotation center line of the guide fan blade 130 and the center line of the pot assembly overlap, which is conducive to uniform heating of the food material. The first motor 230 is arranged on one side of the second motor 220 in the horizontal direction, and the two will not interfere with each other, and will not increase the height of the head 10.

[0095] Optionally, the first end of the head 10 is rotatably connected to the pot assembly, and the first motor 230 is arranged on one side of the second motor 220 close to the first end of the head 10. The opening cover weight can be reduced. As shown in Figure 6 , the head 10 comprises a head seat 101 and an inner liner 102 located at the bottom of the head seat 101, two support columns 103 are distributed on the inner surface of the bottom wall of the head seat 101, and the motor support of the first motor 230 is fixed on the two support columns 103 through two screws. The inner liner 102 is provided with a through hole 104 for the output shaft of the first motor 230 to extend out.

[0096] For the rotation mode of the protective cover 40, further, the transmission assembly 50 drives the protective cover 40 to rotate around its center line, and the rotation center line of the protective cover 40 overlaps the center line of the pot assembly. The rotation of the protective cover 40 can avoid the protective cover 40 from shaking greatly and colliding with the surrounding structure during rotation, and does not need to provide more space for the rotation of the protective cover 40, and is conducive to the uniform distribution of hot air flowing out of the protective cover 40 in the pot 70.

[0097] Furthermore, the transmission assembly 50 extends horizontally beyond the outer periphery of the guide fan blade 130 and connects to the protective cover 40. This effectively prevents interference between the transmission assembly 50 and the guide fan blade 130 during rotation. In addition, the transmission assembly 50 can shift the center of rotation, so that the rotation center line of the protective cover 40 and the center line of the output shaft of the first motor 230 are spaced a certain distance apart.

[0098] As an example, such as Figure 4 , Figure 5 and Figure 7 As shown, the transmission assembly 50 is connected to the part of the protective cover 40 that is higher than the guide fan blade 130. On the one hand, this can avoid interference between the transmission assembly 50 and the guide fan blade 130 during rotation. On the other hand, there is no need to leave a gap between the outer periphery of the guide fan blade 130 and the protective cover 40 for the transmission assembly 50 to pass through, which can reduce the size of the protective cover 40 and reduce the space occupied by the protective cover 40.

[0099] Furthermore, regarding the structure of the transmission assembly 50, the transmission assembly 50 is a reduction transmission assembly, which connects the output shaft of the first motor 210 and the protective cover 40. Compared to the output shaft of the first motor 210 directly driving the protective cover 40 to rotate at high speed, this avoids the protective cover 40 from falling off due to excessive speed or generating excessive noise. Moreover, the reduction transmission assembly can be used to reduce the speed of the protective cover 40 with an appropriate transmission ratio.

[0100] As an example, such as Figure 5 and Figure 7 As shown, the reduction gear assembly includes a driving gear 510 and a driven gear ring 520. The driving gear 510 is connected to the output shaft of the first motor 210; the driven gear ring 520 is coaxially connected to the protective cover 40, and the inner teeth of the driven gear ring 520 mesh with the outer teeth of the driving gear ring. This gear-ring drive facilitates the smooth rotation of the protective cover 40. Furthermore, the rotation centerline of the driven gear ring 520 is the centerline of the protective cover 40, allowing the protective cover 40 to rotate even if the output shaft of the first motor 230 is not located at the center of the protective cover 40. Moreover, the gear ratio can be adjusted by changing the size of the driving gear 510, facilitating the adjustment of the rotational speed of the protective cover 40.

[0101] Regarding the connection method between the driven gear ring 520 and the protective cover 40, further, as... Figure 5 As shown, the driven gear ring 520 is connected to the top of the inner wall of the protective cover 40. This avoids interference between the driven gear ring 520 and the guide fan blade 130 during rotation, and also ensures that hot air is generally blown downwards through the protective cover 40. The driving gear 510 is positioned near the top edge of the protective cover 40. This helps to reduce the size of the driving gear 510, save materials, reduce costs, and also lighten the weight of the cover assembly, facilitating the opening of the cover.

[0102] Further, the cover side wall 410 of the protective cover 40 is circumferentially spaced with a plurality of first connecting portions, the outer side of the driven gear is circumferentially spaced with a plurality of second connecting portions, the plurality of first connecting portions and the plurality of second connecting portions are one-to-one corresponding connection, and each first connecting portion and the corresponding second connecting portion are rotationally engaged. The connection is convenient and fast.

[0103] As an example, as shown in Figure 5 and Figure 7 , the side wall top of the protective cover 40 is provided with a tongue 412 extending horizontally along the side wall of the protective cover 40, and the tongue 412 is configured as a first connecting portion; the outer side wall of the driven gear ring 520 is provided with an outwardly protruding plug-in portion 521, the plug-in portion 521 includes a connecting portion connected with the outer side wall of the driven gear ring 520 and a limiting portion 620 extending upward from one end of the connecting portion away from the driven gear ring 520, the tongue 412 is inserted into the space surrounded by the limiting portion 620, the connecting portion and the outer side wall of the driven gear ring 520, and the plug-in portion 521 is configured as a second connecting portion. When installing the protective cover 40, the protective cover 40 can be rotated clockwise or counterclockwise, so that the tongue 412 is inserted into the plug-in portion 521, and the connection is convenient and fast. Moreover, the plug-in portion 521 has the limiting portion 620, and the tongue 412 is limited between the limiting portion 620 and the outer side wall of the driven gear ring 520, which can avoid the protective cover 40 from shaking horizontally relative to the driven gear ring 520, thereby improving the installation stability of the protective cover 40. Moreover, the plug-in portion 521 has the connecting portion, which can support the tongue 412 when the tongue 412 is inserted into the plug-in portion 521, so that the protective cover 40 is hung on the driven gear ring 520 by the tongue 412, thereby reducing the probability of the protective cover 40 falling off.

[0104] As shown in Figure 5 , the outer side wall of the driven gear ring 520 is provided with a horizontally extending recess 522, the connecting portion is connected to one end inside the recess 522, and the length of the recess 522 protruding outwardly from the limiting portion 620 is greater than the length of the tongue 412. When installing the protective cover 40, the tongue 412 can be first pressed into the recess 522 and then pushed into the plug-in portion 521 along the recess 522, and the existence of the recess 522 provides a space for the tongue 412 to smoothly insert into the plug-in portion 521, thereby facilitating assembly. Moreover, when the tongue 412 is inserted into the plug-in portion 521, the tongue 412 is limited between the limiting portion 620 and the bottom wall of the recess 522, and the thickness of the tongue 412 can be appropriately increased to improve the structural strength of the tongue 412, thereby improving the installation stability of the protective cover 40.

[0105] The fastener (not shown in the figure) connects the protective cover 40 and the driven gear ring 520. The fastener cooperates with the screw connection of the first connecting part and the second connecting part, which can effectively prevent the protective cover 40 from being separated from the driven gear ring 520, and also can prevent the protective cover 40 from moving greatly relative to the driven gear ring 520, thereby improving the installation stability of the protective cover 40. Moreover, the number of fasteners can be one, which reduces the number of parts, saves costs, and has high assembly efficiency.

[0106] For the connection mode of the driving gear 510 and the output shaft of the first motor 230, further, the bottom of the output shaft of the first motor 230 has external threads, the outer periphery of the output shaft of the first motor 230 also has a downward-facing limiting surface, the third mounting nut 231 is screw-connected with the external threads, and the driving gear 510 is limited between the limiting surface and the third mounting nut 231. The assembly is convenient, and the driving gear 510 can be prevented from moving greatly along the output shaft of the first motor 210, so that the driving gear 510 and the driven gear ring 520 can always be engaged, thereby stably driving the protective cover 40 to rotate, reducing the wear of the output shaft of the first motor 210, and reducing the operating noise.

[0107] Further, the limiting gasket is sleeved on the output shaft of the first motor 230 and located between the limiting surface and the driving gear 510. Compared with the direct limiting cooperation of the upper end surface of the driving gear 510 with the limiting surface, the wear of the driving gear 510 and the output shaft can be reduced.

[0108] Further, the bottom of the output shaft of the first motor 230 has a D-shaped cross section, and the driving gear 510 and the limiting gasket are provided with through holes matched with the D-shaped cross section, thereby facilitating the synchronous rotation of the driving gear 510 driven by the output shaft of the first motor 230.

[0109] Of course, the speed reduction transmission assembly can also include a worm gear mechanism or a planetary gear mechanism, etc.

[0110] In order to make the protective cover 40 rotatable and arranged below the handpiece 10 without falling, further, as shown in Figure 5 and Figure 7 A plurality of supporting members 60 are arranged at the bottom of the handpiece 10, the plurality of supporting members 60 are distributed along the circumference of the driven gear ring 520 and support the driven gear ring 520.

[0111] Each support 60 can include a support portion 610 rotatable relative to the head 10, the support portion 610 supporting the driven gear ring 520. In the process of rotating the driven gear ring 520 to drive the protective cover 40, the support portion 610 can also rotate under the action of friction, which can reduce the wear and tear between the driven gear ring 520 and the support 60 due to friction. Each support 60 further includes a limiting portion 620 located above the support portion 610, the limiting portion 620 being fixedly installed on the head 10 or installed on the support portion 610, the driven gear ring 520 being limited between the limiting portion 620 and the support portion 610 and being in clearance fit with the limiting portion 620 and the support portion 610. This avoids the driven gear ring 520 from swinging up and down greatly during rotation.

[0112] As shown in Figure 5 , the number of supports 60 is three, which are distributed equidistantly along the circumference of the driven gear ring 520. The support portion 610 of one of the supports 60 can be constructed by a support sheet below the driving gear 510 of the speed reduction transmission assembly, and the limiting portion 620 is constructed by a limiting gasket above the driving gear 510, which simplifies the structure. The support portions 610 of the other two supports 60 have inverted T-shaped longitudinal sections, and the limiting portions 620 have upright T-shaped longitudinal sections, the vertical extensions of the two T-shaped structures are sleeved on the outer periphery of each other and can rotate relative to each other, and the driven gear ring 520 is limited between the horizontal extensions of the two T-shaped structures. Of course, the number of supports 60 is not limited to three, and can be four, five, etc. The structures of all supports 60 can be completely the same, for example, all including the above-mentioned two T-shaped structures sleeved together, and the structures of all supports 60 can also not be completely the same, for example, one of the supports 60 can be constructed by a support sheet below the driving gear 510, and the limiting portion 620 is constructed by a limiting gasket above the driving gear 510, and the other two supports 60 have inverted T-shaped longitudinal sections, and the limiting portions 620 have upright T-shaped longitudinal sections, the vertical extensions of the two T-shaped structures are sleeved on the outer periphery of each other and can rotate relative to each other, and the driven gear ring 520 is limited between the horizontal extensions of the two T-shaped structures. Figure 5 Two different structures of the support 60 are shown.

[0113] For the structure of the protective cover 40, it can be similar to the structure of the protective cover 40 in the above-mentioned embodiment one, which will not be described again.

[0114] Embodiment three:

[0115] Figure 8 , Figure 9 , Figure 10 and Figure 11 The cover assembly of the third embodiment and the cooking equipment applying the cover assembly are shown. As Figure 8 and Figure 11As shown, the protective cover 40 is provided with a spoiler 440, which can be pushed by the wind generated by the guide fan blade 130 to drive the protective cover 40 to rotate. The spoiler 440 is pushed to rotate by the centrifugal wind generated by the rotation of the guide fan blade 130, thereby driving the protective cover 40 to rotate, which can make the protective cover 40 rotate relatively slowly, eliminating the need to additionally set the first motor 210 to drive the protective cover 40 to rotate, reducing parts and saving costs. In addition, since the protective cover 40 rotates under the action of wind, it can rotate at a relatively slow speed. After the guide fan blade 130 stops rotating at the end of cooking, the protective cover 40 can quickly reduce the speed, which can avoid scratching the user due to the too fast rotation of the protective cover 40 after opening the cover, and even after opening the cover, the protective cover 40 may also interfere with the rotating shaft due to the change of the angle of the cover body assembly and the gravity of the protective cover 40 itself, so as to achieve the function of stopping opening the cover, thereby improving the safety of the product in use.

[0116] Further, as shown in Figure 8 、 Figure 9 and Figure 10 , the cover body assembly includes a first motor 210, and the output shaft of the first motor 210 includes a first connecting section 2101 connected with the guide fan blade 130 for driving the guide fan blade 130 to rotate.

[0117] For the connection mode of the protective cover 40, further as shown in Figure 8 、 Figure 9 and Figure 10 , the output shaft of the first motor 210 further includes a second connecting section 2102, and the protective cover 40 is provided with a mounting hole 421, and the second connecting section 2102 and the mounting hole 421 are connected through a bearing 213. On the one hand, it realizes the rotatable connection of the protective cover 40 below the machine head 10, and on the other hand, it is beneficial to the rotation of the protective cover 40 around the second connecting section 2102, and it will not be driven to rotate at high speed by the second connecting section 2102.

[0118] To avoid the protective cover 40 from falling down, further as shown in Figure 9 , the bottom outer periphery of the second connecting section 2102 is provided with an external thread, and a fourth mounting nut 214 is screwed on the external thread to support the cover bottom wall 420 and the bearing 213 of the protective cover 40 from below. The second connecting section 2102 is further provided with a circumferential outward protruding limiting portion 620, and the upper end surface of the bearing 213 is limitedly matched with the limiting portion 620. In cooperation with the fourth mounting nut 214 supporting the bottom wall and the bearing 213 of the protective cover 40 from below, the bearing 213 can be effectively prevented from moving up and down along the output shaft to a large extent, thereby reducing the running noise.

[0119] Further, a limiting gasket (not shown in the figure) is sleeved on the second connecting section 2102, and the limiting gasket is limited between the fourth mounting nut 214 and the cover bottom wall 420 of the protective cover 40. The protective cover 40 and the bearing 213 are supported by the limiting gasket, the structure is simple, the processing is convenient, and it is convenient to configure a limiting gasket with a large outer diameter to support the hole wall around the mounting hole 421 and the bearing 213, without the need to additionally increase the outer diameter of the fourth mounting nut 214, which is beneficial to reduce the material of the fourth mounting nut 214 and facilitate the processing of the fourth mounting nut 214.

[0120] Further, as shown in Figure 9 the cover bottom wall 420 of the protective cover 40 is provided with a downwardly open sunken platform 422 at the center, the mounting hole 421 is arranged on the bottom wall of the sunken platform 422, and at least part of the fourth mounting nut 214 is embedded in the sunken platform 422.

[0121] In order to avoid that the output shaft of the first motor 210 drives the protective cover 40 to rotate, further, the outer ring of the bearing 213 is in clearance fit with the mounting hole 421, and the inner ring of the bearing 213 is in interference fit with the second connecting section 2102. The mounting hole 421 of the protective cover 40 is in clearance fit with the outer ring of the bearing 213, which can effectively avoid that the high-speed rotation of the output shaft of the first motor 210 drives the protective cover 40 to rotate at high speed, and ensures that the protective cover 40 only rotates at a relatively slow speed relying on wind power. Moreover, due to the clearance fit, when the cover body assembly is opened, the power-off protection device of the cover body assembly will generally control the wind guide fan blade 130 to stop rotating. In the case that the wind guide fan blade 130 stops, under the influence of the opening angle of the cover body assembly and the gravity of the protective cover 40 itself, the outer ring of the bearing 213 will interfere with the inner wall of the mounting hole 421, which is beneficial to the realization of the opening of the protective cover 40 and the stopping, and the safety is high. In addition, the inner ring of the bearing 213 is in interference fit with the second connecting section 2102, which improves the installation stability of the bearing 213 and the second connecting section 2102, avoids the relative shaking of the two, and reduces the operating noise.

[0122] Of course, for the connection mode of the protective cover 40, in addition to connecting the protective cover 40 and the output shaft of the first motor 210 through the bearing 213, the protective cover 40 can also be supported by the plurality of supporting members 60 at the bottom of the head 10 in the second embodiment, so that the protective cover 40 is rotatably arranged below the head 10 and rotates under the action of wind power.

[0123] For the connection between the guide fan blade 130 and the first connecting segment 2101, further, the outer periphery of the first connecting segment 2101 is provided with external threads, and the cover assembly further comprises a fifth mounting nut (not shown in the figure), which is screwed on the external threads and supports the guide fan blade 130 from below. The installation is convenient, and the guide fan blade 130 can be stably supported, avoiding interference between the guide fan blade 130 and the heat-generating part 110, the protective cover 40, etc. in the case of downward movement along the output shaft. Moreover, the fifth mounting nut can rotate synchronously with the output shaft, thereby reducing the wear of the output shaft and the wear between the fifth mounting nut and the guide fan blade 130.

[0124] Or further, as shown in Figure 9 , the first connecting segment 2101 and the second connecting segment 2102 are connected together by threads. The output shaft is of a split structure, which facilitates the connection of the first connecting segment 2101 to the guide fan blade 130 and the connection of the second connecting segment 2102 to the protective cover 40. The bottom of the first connecting segment 2101 is inserted into the second connecting segment 2102, and the upper end surface of the second connecting segment 2102 supports the guide fan blade 130, without the need for additional support structure to support the guide fan blade 130, thereby simplifying the structure.

[0125] Further, as shown in Figure 8 , the cover assembly further comprises a heat dissipation fan blade 120, which is connected to the first connecting segment 2101 and located inside the handpiece 10, and is used for heat dissipation of the internal components of the handpiece 10. The output shaft of the first motor 210 simultaneously drives the rotation of the heat dissipation fan blade 120, the guide fan blade 130 and the protective cover 40, thereby simplifying the structure.

[0126] For the structure of the protective cover 40, further, as shown in Figure 8 and Figure 11 , the protective cover 40 comprises a cover side wall 410 and a cover bottom wall 420 located at the bottom of the cover side wall 410, and a plurality of ventilation holes comprises a plurality of first ventilation holes 411 provided on the cover side wall 410 and a plurality of second ventilation holes 423 provided on the cover bottom wall 420. Hot air is blown out of the protective cover 40 through the plurality of first ventilation holes 411 and the plurality of second ventilation holes 423.

[0127] In order to enable the turbulence ribs 440 to drive the rotation of the protective cover 40 under the blowing of the centrifugal air generated by the guide fan blade 130, further, the plurality of turbulence ribs 440 are arranged on the inner surface of the cover side wall 410 and are distributed circumferentially.

[0128] As an example, the first vent holes 411 are in the shape of strips, vertically or obliquely distributed on the cover side wall 410, and a plurality of first vent holes 411 are circumferentially spaced apart around the cover side wall 410. Each first vent hole 411 has a convex bump protruding inward at one side edge in the width direction of the first vent hole 411, and the convex bump and the other side edge in the width direction of the first vent hole 411 have an opening therebetween, and the convex bump is configured as a spoiler 440. The convex bump structure is simple and convenient for processing and production. Moreover, it is convenient for hot air to impact the inward side of the convex bump under the action of centrifugal wind force, which is conducive to the hot air pushing the convex bump to move and in turn pushing the protective cover 40 to rotate, and at the same time, the hot air can flow out of the first vent hole 411 along the outward side of the convex bump, and the air outlet is smooth. Moreover, it is also conducive to the convex bump disturbing the hot air, so that the hot air is uniformly distributed in the protective cover 40.

[0129] Of course, the spoiler 440 can also be configured by a flange structure at one side in the width direction of the first vent hole 411.

[0130] Or further, a plurality of spoilers 440 are arranged on the inner surface of the cover bottom wall 420, and the plurality of spoilers 440 are circumferentially spaced apart around the center line of the cover bottom wall 420.

[0131] As an example, a plurality of second vent holes 423 are circumferentially spaced apart around the center line of the cover bottom wall 420. The second end of each second vent hole 423 is closer to the center of the cover bottom wall 420 than the first end thereof. Each second vent hole 423 has a flange structure protruding inward at one side edge in the width direction of the second vent hole 423, and the flange structure is configured as a spoiler 440. Among them, the second end of each spoiler 440 is closer to the center of the cover bottom wall 420 than the first end thereof. The spoiler 440 can cut a part of concentric circles with the center of the cover bottom wall 420 as the center, and during the rotation of the guide fan blade 130, the spoiler 440 has a large windward surface, and the centrifugal wind force can impact and push the spoiler 440 in a large area, which is conducive to the stable rotation of the protective cover 40. Moreover, the spoiler 440 can also disturb the hot air in the protective cover 40 in a large area, and the spoiler effect is good.

[0132] Optionally, each spoiler 440 extends in the radial direction of the cover bottom wall 420. The processing is convenient.

[0133] Optionally, the first end of each spoiler rib 440 is close to the edge of the cover bottom wall 420, and the second end of each spoiler rib 440 extends in a direction deviating from the center of the cover bottom wall 420; wherein the second end of each spoiler rib 440 deviates from the same side of the center of the cover bottom wall 420 and deviates by the same angle relative to the first end thereof. For example, the second end of each spoiler rib 440 deviates by 10°, 15° or 30° from the center of the cover bottom wall 420 to the right, and the extension lines of the plurality of spoiler ribs 440 can enclose a regular polygon, the spoiler ribs 440 are bifurcated, the spoiler effect is good, and the length of the spoiler rib 440 can be prolonged, the windward area of the spoiler rib 440 is increased, and thus the spoiler effect is improved. Each spoiler rib 440 can extend in a straight line or in an arc shape.

[0134] Optionally, the width of each second vent hole 423 gradually decreases from the direction of the edge of the cover bottom wall 420 to the direction of the center of the cover bottom wall 420. Since the area of the bottom wall close to the center of the cover bottom wall 420 is smaller, this distribution is beneficial to increase the number of second vent holes 423, increase the overall windward area of the plurality of spoiler ribs 440, and facilitate the smooth rotation of the protective cover 40.

[0135] Since the spoiler rib 440 is arranged on the cover bottom wall 420 rather than on the cover side wall 410, the first vent hole 411 can be in a strip shape and horizontally arranged on the cover side wall 410. The ventilation resistance is small, and the ventilation is good.

[0136] In order to quickly and uniformly distribute hot air in the pot body 70, further, a plurality of second air guide ribs are arranged on the lower surface of the cover bottom wall 420 of the protective cover 40, the plurality of second air guide ribs are circumferentially spaced around the center of the cover bottom wall 420, the first end of each second air guide rib is close to the edge of the cover bottom wall 420, and the second end of each second air guide rib is close to the center of the cover bottom wall 420 relative to the first end thereof. The second air guide rib can cut a part of concentric circles with the center of the cover bottom wall 420 as the center, and in the process of rotation of the protective cover 40, the second air guide rib can have a larger windward area, can better disturb the hot air in the pot body 70, and has a good spoiler effect.

[0137] Optionally, each second air guide rib extends in the radial direction of the cover bottom wall 420. The spoiler is uniform, which is beneficial to uniformly distribute the hot air in the pot, and facilitates the processing of the second air guide rib to be formed in the set position.

[0138] Optionally, the first end of each second air guide protruding rib is close to the edge of the cover bottom wall 420, and the second end of each second air guide protruding rib extends in a direction deviating from the center of the cover bottom wall 420; wherein the second end of each second air guide protruding rib deviates from the same side of the center of the cover bottom wall 420 at the same angle relative to the first end thereof. For example, the second end of each second air guide protruding rib deviates from the center of the cover bottom wall 420 by 10°, 15° or 30° to the right, and the extension lines of the plurality of second air guide protruding ribs can enclose a regular polygon, thereby achieving good disturbance effect, and the length of the second air guide protruding rib can be extended, the windward area of the disturbance rib can be increased, and the disturbance effect can be improved, so that the hot air is uniformly distributed in the pot body 70.

[0139] Optionally, each second air guide protruding rib is vertically arranged at one side edge of the second air vent hole 423 in the width direction, or each second air guide protruding rib is arranged at one side edge of the second air vent hole 423 in the width direction, and the lower convex end of the second air guide protruding rib extends obliquely to the inside of the adjacent second air vent hole 423.

[0140] Further, in the case that the disturbance rib 440 and the second air guide protruding rib are both arranged on the cover bottom wall 420, the plurality of disturbance ribs 440 and the plurality of second air guide protruding ribs are respectively connected to the edges of different second air vent holes 423, and in the circumferential direction of the protective cover 40, one second air guide protruding rib is distributed between any two adjacent disturbance ribs 440. The two are not easy to interfere with each other.

[0141] Further, the plurality of air vent holes further include a plurality of third air vent holes arranged on the cover bottom wall 420, the third air vent holes are in the form of broken rings, the plurality of third air vent holes are spaced apart on the cover bottom wall 420 in the form of a large ring surrounding a small ring, for example, separated by the plurality of disturbance ribs 440, or the third air vent holes are in the form of circular holes. The ventilation area of the protective cover 40 is increased, and the ventilation performance is good.

[0142] Further, the cover side wall 410 is in the form of a straight cylinder. Compared with the outward inclination of the cover side wall 410, the occupied space of the protective cover 40 can be reduced, and sufficient space is provided inside to accommodate the air guide fan blades 130 and the heat generating element 110.

[0143] In the embodiment, since the protective cover 40 rotates under the action of wind, the disturbance rib 440 needs to be added to facilitate the centrifugal wind force generated by the air guide fan blades 130 to impact the disturbance rib 440 and thereby push the protective cover 40 to rotate smoothly and smoothly. The setting position and shape of the disturbance rib 440 can be similar to the first air guide protruding rib 430 in the first embodiment described above, so that the protective cover 40 can be driven to rotate, and the hot air inside the protective cover 40 can be disturbed, so that the hot air is uniformly distributed in the protective cover 40. The setting position and shape of the disturbance rib 440 can also be different from the first air guide protruding rib 430, mainly to push the protective cover 40 to rotate.

[0144] Embodiment Four

[0145] Figure 12 、 Figure 13 and Figure 14 A cover assembly of a fourth embodiment and a cooking device applying the cover assembly are shown. The main difference from the third embodiment described above is that the protective cover 40 can be assisted to rotate under the action of electricity in addition to the action of wind. Specifically, the cover assembly comprises a first motor 210 arranged in the machine head 10, and an auxiliary driving part is arranged on the output shaft of the first motor 210. During the rotation of the protective cover 40 under the action of wind, the protective cover 40 can rub against the auxiliary driving part to enable the first motor 210 to assist the rotation of the protective cover 40 under the action of friction.

[0146] In this embodiment, the first motor 210 is used to assist the rotation of the protective cover 40 under the action of wind, which can avoid the situation that the protective cover 40 is stuck by oil stains and cannot rotate, and achieve smooth rotation of the protective cover 40 under the action of wind and electrical assistance. Specifically, during the rotation of the protective cover 40 under the action of wind, the centrifugal force generated by the protective cover 40 can cause the protective cover 40 to deviate and rub against the auxiliary driving part. The protective cover 40 is in contact with the output shaft of the first motor 210 through the auxiliary driving part, so that the first motor 210 can assist the rotation of the protective cover 40 under the action of friction.

[0147] As for the connection mode of the auxiliary driving part and the protective cover 40, in a specific embodiment, the protective cover 40 is provided with a mounting hole 421, and the auxiliary driving part is inserted into the mounting hole 421 and gap-fitted with the mounting hole 421. Specifically, during the rotation of the protective cover 40, the inner wall of the mounting hole 421 can deviate and be in contact with the auxiliary driving part. In the case that the output shaft of the first motor 210 is in friction with the auxiliary driving part, the first motor 210 can intermittently drive the rotation of the protective cover 40 through the friction between the output shaft and the auxiliary driving part, and the friction between the auxiliary driving part and the mounting hole 421. The mounting hole 421 is located on the rotation center line of the protective cover 40.

[0148] Further, as shown in Figure 13 , the auxiliary driving part comprises a limiting sleeve 215, which is sleeved on the output shaft of the first motor 210 and gap-fitted with the mounting hole 421 in the circumferential direction. By additionally providing the limiting sleeve 215 gap-fitted with the mounting hole 421, the distance between the output shaft and the mounting hole 421 can be increased. During the rotation of the protective cover 40 under the action of wind, the centrifugal force generated by the protective cover 40 needs to cause the mounting hole 421 to rub against the limiting sleeve 215. By using the output shaft to intermittently drive the rotation of the protective cover 40 through the limiting sleeve 215, the first motor 210 can be used to assist the intermittent rotation of the protective cover 40 under the action of wind, so that the rotational speed of the protective cover 40 will not be too high.

[0149] The limiting sleeve 215 can be interference fitted with the output shaft of the first motor 210. Of course, the limiting sleeve 215 can also be clearance fitted with the output shaft of the first motor 210. In this case, during the rotation of the protective cover 40 under the action of wind, the mounting hole 421 deviates and comes into contact with the limiting sleeve 215, the limiting sleeve 215 deviates and comes into contact with the output shaft of the first motor 210, and the first motor 210 needs to assist the rotation of the protective cover 40 under the action of the friction between the output shaft and the limiting sleeve 215 and the friction between the limiting sleeve 215 and the mounting hole 421.

[0150] Further, as shown in Figure 13 , the limiting sleeve 215 includes a sleeve body 2151 and a first limiting ring 2152. The sleeve body 2151 is in the shape of a sleeve with openings at the top and bottom. The sleeve body 2151 is rotatably sleeved on the output shaft of the first motor 210, and the mounting hole 421 is sleeved on the outer periphery of the sleeve body 2151. The first limiting ring 2152 is arranged at the bottom of the sleeve body 2151 and protrudes outward in the circumferential direction of the sleeve body 2151. The mounting hole 421 is sleeved on the outer periphery of the sleeve body 2151, and the outer diameter of the first limiting ring 2152 is greater than the inner diameter of the mounting hole 421. The first limiting ring 2152 can support the protective cover 40 from below. This can effectively prevent the protective cover 40 from falling off the limiting sleeve 215.

[0151] Further, as shown in Figure 13 , the outer edge of the first limiting ring 2152 has a protruding support rib 2153 for supporting the protective cover 40. By using the protruding support rib 2153 to support the protective cover 40, the friction area can be reduced while the protective cover 40 is stably supported, thereby avoiding the full-speed rotation of the protective cover 40 driven by the limiting sleeve 215.

[0152] Further, as shown in Figure 13 , the limiting sleeve 215 further includes a second limiting ring 2154. The second limiting ring 2154 is arranged at the top of the sleeve body 2151 and protrudes outward in the circumferential direction of the sleeve body 2151. The distance between the first limiting ring 2152 and the second limiting ring 2154 is greater than the wall thickness of the hole wall around the mounting hole 421. On the one hand, the first limiting ring 2152 and the second limiting ring 2154 can be used to limit the protective cover 40, thereby preventing the protective cover 40 from moving up and down greatly during rotation. On the other hand, the distance between the first limiting ring 2152 and the second limiting ring 2154 is greater than the wall thickness of the hole wall around the mounting hole 421, which can prevent the limiting sleeve 215 from clamping the protective cover 40 tightly and driving the protective cover 40 to rotate at high speed, thereby providing a moving space for the rotation of the protective cover 40 under the action of wind.

[0153] At least one of the first limiting ring 2152 and the second limiting ring 2154 is integrally formed with the sleeve body 2151. The processing is convenient. Specifically, in the case that the first limiting ring 2152 and the sleeve body 2151 are integrally formed, the two are firmly connected, which is conducive to stably supporting the protective cover 40. In the case that the second limiting ring 2154 and the sleeve body 2151 are integrally formed, the limiting sleeve 215 can be first sleeved on the second connecting section 2102, and then the sleeve body 2151 is inserted into the mounting hole 421, which is convenient for assembly. In the case that the first limiting ring 2152, the second limiting ring 2154 and the sleeve body 2151 are integrally formed, the processing is convenient, the number of parts is reduced, and the structural strength is high.

[0154] To reduce the operating noise, further, as shown in Figure 13 The auxiliary driving part further includes a damping sleeve 216, the outer side wall of the damping sleeve 216 is provided with a circumferentially distributed clamping groove 2161, the hole wall around the mounting hole 421 is inserted into the clamping groove 2161, and the damping sleeve 216 is sleeved on the outer periphery of the limiting sleeve 215 and circumferentially gap-fitted with the limiting sleeve 215. By adding the damping sleeve 216 between the mounting hole 421 and the limiting sleeve 215, and making the damping sleeve 216 circumferentially gap-fitted with the limiting sleeve 215, the limiting sleeve 215 can be prevented from driving the protective cover 40 to rotate at high speed through the damping sleeve 216. Moreover, the hole wall around the mounting hole 421 is inserted into the clamping groove 2161 of the damping sleeve 216, and since the damping sleeve 216 has a certain elasticity, even if the protective cover 40 moves during rotation, the damping sleeve 216 will softly impact the limiting sleeve 215, which can effectively reduce the rotation noise of the protective cover 40 and reduce the abrasion.

[0155] Further, a gap is left between the hole inner wall of the mounting hole 421 and the groove bottom wall of the clamping groove 2161, and / or the width of the clamping groove 2161 is greater than the thickness of the hole wall around the mounting hole 421. The width direction of the clamping groove 2161 is in the same direction as the length direction of the output shaft. The hole wall around the mounting hole 421 can be gap-fitted with the clamping groove 2161 of the damping sleeve 216 in the circumferential direction and the upward and downward directions, so that the limiting sleeve 215 can be prevented from driving the protective cover 40 to rotate at high speed through the damping sleeve 216.

[0156] To prevent the protective cover 40 from falling off, further, the second connecting section 2102 of the output shaft is provided with a limiting surface facing downward in the circumferential direction, and the auxiliary driving part further includes a sixth mounting nut 217, which is screwed on the bottom of the second connecting section 2102 and presses the limiting sleeve 215 against the limiting surface. The installation is convenient, and the limiting sleeve 215 can be prevented from falling off the output shaft, which is conducive to stably supporting the protective cover 40 by the limiting sleeve 215.

[0157] Further, the auxiliary driving part further comprises a shielding cap 218 opening upward, the sixth mounting nut 217 is mounted at the inner bottom of the shielding cap 218, the shielding cap 218 shields the outer periphery of the part of the installation hole 421 of the limiting sleeve 215, and a gap is left between the bottom wall of the protective cover 40. The sixth mounting nut 217 is covered from below by the shielding cap 218, and the part of the limiting sleeve 215 is shielded by the shielding cap 218, so that the shielding cap 218 can shield impurities such as oil stains, reduce the influence of oil stains on the wind-driven rotation of the protective cover 40, and improve the appearance effect of the bottom of the protective cover 40 after the cover is opened. Moreover, a gap is left between the shielding cap 218 and the bottom wall of the protective cover 40 to avoid friction between the shielding cap 218 and the protective cover 40.

[0158] For the connection mode of the auxiliary driving part and the protective cover 40, in another specific embodiment, the auxiliary driving part is located at the inner side of the protective cover 40 and gap-fitted with the side wall of the protective cover 40. Thus, during the rotation of the protective cover 40, the protective cover 40 can be offset so that the inner surface of the side wall thereof is in contact with the auxiliary driving part, and the output shaft of the first motor 210 can assist the protective cover 40 to rotate under the action of the friction between the auxiliary driving part and the side wall of the protective cover 40. At this time, the auxiliary driving part can comprise a driving ring arranged close to the top or bottom of the side wall of the protective cover 40, avoiding the heat generating member 110 and the air guide fan blade 130, and can be in contact with the side wall of the protective cover 40 at multiple circumferential positions.

[0159] Further, the output shaft of the first motor 210 is further connected with the air guide fan blade 130 to drive the air guide fan blade 130 to rotate. The air guide fan blade 130 and the protective cover 40 are driven by the same motor, without the need to independently configure motors for the two, reducing parts and saving costs, which is conducive to reducing the weight of the cover assembly and facilitating the cover opening operation.

[0160] For the connection mode of the output shaft of the first motor 210 and the air guide fan blade 130, further, as shown in Figure 14 the first motor 210 comprises a first connecting section 2101 connected with the air guide fan blade 130, and the cover assembly further comprises a seventh mounting nut 219 screwed on the first connecting section 2101 and supporting the air guide fan blade 130 from below.

[0161] Or further, the first connecting section 2101 and the second connecting section 2102 are threadedly connected, the bottom of the first connecting section 2101 is inserted into the second connecting section 2102, and the air guide fan blade 130 is supported by the upper end face of the second connecting section 2102.

[0162] For the arrangement position of the turbulence fins 440, in one specific embodiment, the protective cover 40 comprises a cover side wall 410 surrounding the outer periphery of the heat generating element 110, and the turbulence fins 440 are arranged on the cover side wall 410 and distributed circumferentially around the rotation center line of the protective cover 40. In the case where the air guide fan blade 130 is a centrifugal fan blade, the hot air blown by the air guide fan blade 130 is easy to blow to the turbulence fins 440, to push the plurality of turbulence fins 440 to rotate in the circumferential direction, and in turn to push the protective cover 40 to rotate stably. At this time, the protective cover 40 can have a cover bottom wall 420 located below the heat generating element 110, or can not have the cover bottom wall 420.

[0163] Further, the turbulence fins 440 are vertically distributed or obliquely distributed on the cover side wall 410.

[0164] In another specific embodiment, the protective cover 40 comprises a cover bottom wall 420 located below the heat generating element 110, and the turbulence fins 440 are arranged on the cover bottom wall 420 and distributed circumferentially around the rotation center line of the protective cover 40. Among them, the turbulence fins 440 extend along the radial direction of the cover bottom wall 420, or the first end of the turbulence fins 440 is close to the edge of the cover bottom wall 420, and the second end of the turbulence fins 440 extends in a direction deviating from the center of the cover bottom wall 420. The hot air blown by the air guide fan blade 130 can push the plurality of turbulence fins 440 to rotate in the circumferential direction, and in turn to push the protective cover 40 to rotate stably. At this time, the protective cover 40 can have a cover side wall 410 surrounding the outer periphery of the heat generating element 110, or can not have the cover side wall 410.

[0165] Further, the turbulence fins 440 are arranged on the inner surface of the protective cover 40. On the one hand, it is convenient to be blown by the hot air to drive the protective cover 40 to rotate, and on the other hand, it is beneficial to disturb the hot air inside the protective cover 40, so that the hot air is more evenly distributed inside the protective cover 40.

[0166] Further, the lower surface of the cover bottom wall 420 of the protective cover 40 is provided with air guide convex ribs (not shown in the figure), and the air guide convex ribs are distributed circumferentially around the center of the cover bottom wall 420. The air guide convex ribs can rotate with the rotation of the protective cover 40, and in the case where the cover body assembly is closed on the pot body assembly, the air guide convex ribs can disturb the hot air inside the pot body, so as to facilitate the uniform distribution of the hot air inside the pot body, and in turn to improve the uniformity of the heating of the food materials.

[0167] For the structure of the protective cover 40, further, the protective cover 40 comprises a cover side wall 410 surrounding the outer periphery of the heat generating element 110. The cover side wall 410 is provided with a plurality of first ventilation holes 411, so as to facilitate the hot air to blow out of the protective cover 40 through the first ventilation holes 411.

[0168] Further, the cover side wall 410 is straight. Compared with the outward inclination of the cover side wall 410, the occupation space of the protective cover 40 can be reduced, and the internal space is sufficient to accommodate the air guide fan blade 130 and the heating element 110.

[0169] Further, the protective cover 40 comprises the cover side wall 410 located at the outer periphery of the heating element 110 and the cover bottom wall 420 located at the bottom of the cover side wall 410. The protective cover 40 can shield the heating element 110 from below and circumferentially, and has good safety. The cover side wall 410 is provided with a plurality of first ventilation holes 411, and the cover bottom wall 420 is provided with a plurality of second ventilation holes 423. The air guide fan blade 130 can blow the hot air generated by the heating element 110 out of the protective cover 40 through the plurality of first ventilation holes 411 and the plurality of second ventilation holes 423, and has good ventilation effect.

[0170] As an example, the first ventilation hole 411 is in a strip shape and vertically distributed or obliquely distributed or horizontally arranged on the cover side wall 410. The structure is simple and convenient to process, and in the case that the first ventilation hole 411 is horizontally arranged on the cover side wall 410, the ventilation resistance is small and the ventilation effect is good.

[0171] As an example, the second ventilation hole 423 is in a strip shape and circumferentially spaced around the center of the cover bottom wall 420.

[0172] As an example, the cover bottom wall 420 is further provided with a plurality of third ventilation holes. The third ventilation holes are in a broken ring shape and are spaced on the cover bottom wall 420 in a manner that a large ring is sleeved on a small ring, or the third ventilation holes are in a circular hole shape. The ventilation is good.

[0173] In addition, on the basis of any of the above embodiments, as shown in Figure 3 、 Figure 7 、 Figure 11 and Figure 12 , the heating element 110 is a heating pipe and is in a non-closed ring shape, for example, in a C-shaped distribution, so that the wiring terminals at the two open ends of the heating pipe can extend into the head 10 to be connected with the power supply.

[0174] Further, as shown in Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 11 and Figure 12 , the cover assembly further comprises a cover body 140 connected to the bottom of the head 10. The middle part of the cover body 140 has a through hole for the heating element 110 to pass through, and the cover body 140 can be covered on the pot body assembly.

[0175] Furthermore, the lid body 140 is detachably connected to the bottom of the machine head 10. This facilitates the removal of the lid body 140 for cleaning. Moreover, with the first motor 210 located inside the machine head 10, the first motor 210 will not interfere with the removal of the lid body 140. Additionally, the lid body 140 has a through hole for the heating element 110 to pass through, facilitating the heating element 110 to heat the food below the lid body 140. A gap is maintained between the protective cover 40 and the lid body 140 to prevent interference between the protective cover 40 and the lid body 140 during rotation.

[0176] Specifically, the upper edge of the sidewall of the protective cover 40 can be spaced apart from the lower surface of the cover body 140 to avoid rotational interference.

[0177] Furthermore, the lid body 140 is a glass lid, allowing users to easily observe the food through the glass lid.

[0178] Furthermore, the head unit 10 includes a head unit base 101, an exhaust ring located at the bottom of the head unit base 101, and an inner liner 102 located at the bottom of the exhaust ring. The output shaft of the first motor 210 extends out of the inner liner 102 and connects to the protective cover 40.

[0179] In some embodiments, the cooking device is an air fryer, a baking and air frying combination device, etc.

[0180] While embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. It should be understood that, to those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. A cap assembly, characterized by, The cover assembly comprises: A machine head (10) provided with a heating element (110) at the bottom of the machine head (10); A guide fan blade (130) rotatably arranged above the heating element (110) for blowing hot air; A protective cover (40) rotatably arranged below the machine head (10) and outside the heating element (110), the protective cover (40) being provided with a spoiler rib (440) that can be pushed by the wind generated by the guide fan blade (130) to drive the protective cover (40) to rotate; The cover assembly further comprises a first motor (210) arranged in the machine head (10), an auxiliary driving part being arranged on the output shaft of the first motor (210), and during the rotation of the protective cover (40) under the action of the wind, the protective cover (40) can rub against the auxiliary driving part to make the first motor (210) assist the rotation of the protective cover (40) under the action of friction.

2. The cover assembly of claim 1, wherein The protective cover (40) is provided with a mounting hole (421), and the auxiliary driving part is inserted into the mounting hole (421) and gap-fitted with the mounting hole (421); or The auxiliary driving part is located on the inner side of the protective cover (40) and gap-fitted with the side wall of the protective cover (40).

3. The cover assembly of claim 1, wherein The output shaft of the first motor (210) is further connected with the guide fan blade (130) to drive the guide fan blade (130) to rotate.

4. The cover assembly of any one of claims 1 to 3, wherein, The protective cover (40) comprises a cover side wall (410) surrounding the outer periphery of the heating element (110), the spoiler rib (440) is arranged on the cover side wall (410) and distributed circumferentially around the center line of the rotation of the protective cover (40), and the spoiler rib (440) is vertically distributed or obliquely distributed on the cover side wall (410).

5. The cover assembly of any one of claims 1 to 3, wherein, The protective cover (40) comprises a cover bottom wall (420) located below the heating element (110), and the spoiler rib (440) is arranged on the cover bottom wall (420) and distributed circumferentially around the center line of the rotation of the protective cover (40); Wherein, the spoiler rib (440) extends radially along the cover bottom wall (420), or the first end of the spoiler rib (440) is close to the edge of the cover bottom wall (420), and the second end of the spoiler rib (440) extends to a direction deviating from the center of the cover bottom wall (420).

6. The cover assembly of any one of claims 1 to 3, wherein, The spoiler rib (440) is arranged on the inner surface of the protective cover (40); and / or The lower surface of the cover bottom wall of the protective cover (40) is provided with a guide convex rib, and the guide convex rib is distributed circumferentially and spaced apart around the center of the cover bottom wall (420).

7. The cover assembly of any one of claims 1 to 3, wherein, The cover assembly further comprises: A cover body (140) detachably connected at the bottom of the machine head (10), the cover body (140) being provided with a through hole for the heating element (110) to pass through, and a gap is left between the protective cover (40) and the cover body (140).

8. The cover assembly of any one of claims 1-3, wherein, The protective cover (40) comprises a cover side wall (410) located at the periphery of the heat generating part (110), or the protective cover (40) comprises a cover side wall (410) located at the periphery of the heat generating part (110) and a cover bottom wall (420) located at the bottom of the cover side wall (410); and / or The heat generating part (110) is a heat generating pipe, which is distributed in a non-closed ring shape.

9. A cooking apparatus, characterized by, Comprise: A pot body assembly; And The lid assembly as claimed in any one of claims 1 to 8, which is covered on the pot body assembly.

Images