CN207922305U - Heating device - Google Patents

Abstract

The utility model provides a heating cooker, which comprises: a base with a lower electrical room inside, and a bottom ventilation hole formed on the base; a cylindrical cavity, which is arranged on the base, and a cavity for placing food is formed inside; The heating cavity, one side of the heating cavity is formed as an opening for food to enter and exit; the semi-cylindrical door body is arranged on the cavity; the wind guide is arranged in the lower electrical room; at least one electrical device is arranged in the wind guide , a cooling air duct is formed on the air guide cover; the bottom fan is arranged on the cooling air duct; wherein, the wind blown by the bottom fan is blown to at least one electrical device through the cooling air duct, and is discharged out of the lower electric device through the bottom ventilation hole; or the bottom fan The heat generated by at least one electrical device is taken out through the cooling air duct, and discharged out of the lower electrical room through the bottom ventilation hole. Through the technical scheme of the utility model, the wind blown by the bottom fan is used to rapidly cool the electrical components; or the heat generated by the electrical components is extracted from the cooling air duct.

Description

heating cooker

technical field

The utility model relates to the field of household appliances, in particular to a heating cooker.

Background technique

Usually, as shown in FIG. 1 , a heating cooker such as a microwave oven is in the shape of a cuboid, and has a cooking chamber for placing food to be heated and an electrical chamber for disposing electrical components such as a fan, a power board, a magnetron, and a frequency converter. The heating elements such as the microwave generator and power supply can be cooled by the fan. In addition, in order to fully dissipate heat in the electrical room, it is necessary to ensure a large space in the electrical room.

In addition to the traditional cuboid heating cooker, cylindrical heating cookers have also appeared in the prior art. Cylindrical heating cookers are welcomed by users because of their unique appearance and can provide users with new experiences. The inventor found in the process of experimenting with the cylindrical heating cooker that the existing electric appliance room and its heat dissipation method cannot be directly applied, especially when the structural requirements of the cylindrical heating cooker are relatively compact, it is necessary to re-radiate the heat And wind guide way to design.

In addition, for the above-mentioned cylindrical heating cooker, in order to ensure the effective heat dissipation of the electrical components, it is necessary to rationalize the layout of the electrical components, so the electrical components are respectively installed on the upper side and the lower side of the cooking chamber, while the existing heat dissipation and The air guiding method cannot meet the heat dissipation requirements of the electrical components on the upper and lower sides of the cooking chamber at the same time.

Utility model content

The utility model provides a heating cooker. The heat dissipation structure provided by the utility model can be suitable for the heat dissipation requirements of the electrical components in the lower electrical room of the cylindrical heating cooker.

In order to achieve the above purpose, the technical solution of the present utility model provides a heating cooker, including: a base, a lower electrical room is formed inside, and a bottom ventilation hole is formed on the base; a cylindrical cavity, which is arranged on the base , there is a heating cavity inside for food placement, and one side of the heating cavity is formed as an opening for food to enter and exit; a semi-cylindrical door body is arranged on the cavity to close or open the opening; the wind guide cover is set In the lower electrical room; at least one electrical device is arranged on the air guide cover, and a cooling air channel for cooling at least one electrical device is formed on the air guide cover; the bottom fan is arranged on the cooling air channel; wherein, the wind blown by the bottom fan passes through The cooling air duct blows to at least one electrical device, and discharges the heat generated by the at least one electrical device through the cooling air duct, and discharges the heat generated by the bottom electrical device out of the lower electrical room through the bottom ventilation hole.

During the working process of the heating cooker, the operation of the internal electrical components will generate heat, which will cause the temperature in the lower electrical room to rise. If the temperature in the lower electrical room is too high, it will seriously affect the service life of the electrical components. The matching bottom fan and cooling air duct are arranged on the top, and the wind blown by the bottom fan is used to rapidly cool the electrical components; or the heat generated by the electrical components is extracted from the cooling air duct to realize rapid cooling of the electrical components.

In addition, the heating cooker in the above technical solution provided by the utility model can also have the following additional technical features:

In the above technical solution, preferably, a slot is provided on the air guide cover, and the bottom fan is provided on the slot.

In any of the above technical solutions, preferably, at least one electrical device includes a door body driving motor, the air guide cover is formed with a fixing frame, and the door body driving motor is arranged on the fixing frame.

In the above technical solution, preferably, at least one electrical device further includes a microwave generator, and a first installation position for installing the microwave generator is formed on the air guide cover, and the first installation position constitutes at least a part of the cooling air duct.

In the above technical solution, preferably, at least one electrical component further includes a power supply part, and a second installation position for installing the power supply part is formed on the air guide cover, and the first installation position and the second installation position constitute at least a part of the cooling air duct .

In the above technical solution, preferably, the wind guide cover is provided with a first cooling hole for cooling the door body driving motor, and the first installation position, the second installation position and the first cooling hole form at least a part of the cooling air duct.

In the above technical solution, preferably, a third installation position is provided on the top of the air guide cover, at least one electrical component includes a micro switch, and the micro switch is provided on the third installation position.

In the above technical solution, preferably, a second cooling hole is provided at the position corresponding to the third installation position on the top of the air guide cover for cooling the micro switch, the first installation position, the second installation position, the first cooling hole and the second cooling holes form at least a part of the cooling air passage.

In any of the above technical solutions, preferably, at least one of the wind guide cover and the cavity is provided with a first support position, and the cavity and the wind guide cover are connected through the first support position.

In the above technical solution, preferably, ribs are provided at intervals on the first support position.

In any of the above technical solutions, preferably, it also includes at least one set of clamping components, each set of clamping components includes a hook and a block that cooperate with each other, one of the hook and the block is arranged on the base, and the other Set on the windshield.

In any of the above technical solutions, preferably, the base is provided with a second support position, the wind guide cover is provided on the second support position, and cooling fins are arranged at intervals on the second support position.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

Fig. 1 shows the structural diagram of existing heating cooker;

Fig. 2 shows a closed state diagram of a heating cooker according to an embodiment of the present invention;

Fig. 3 shows an open state view of the heating cooker according to an embodiment of the present invention;

Fig. 4 shows the structural diagram of the door body and guide rail structure according to an embodiment of the present invention;

Fig. 5 shows the exploded structural view of the door body and guide rail structure according to the embodiment of the present utility model;

Fig. 6 shows a schematic diagram of the exploded structure of the lower electrical room according to an embodiment of the present invention;

Figure 7 shows an enlarged view of part A in Figure 6;

Figure 8 shows an enlarged view of part B in Figure 6;

Fig. 9 shows a structural diagram of a wind guide cover according to an embodiment of the present invention;

Fig. 10 shows a bottom view of a base according to an embodiment of the present invention;

Fig. 11 shows a bottom view of the wind deflector according to an embodiment of the present invention;

Fig. 12 shows a structural schematic view of another angle of the wind guide cover according to an embodiment of the present invention;

Fig. 13 shows a side view of the wind deflector according to an embodiment of the present invention;

The corresponding relationship between reference numerals and component names in Fig. 2 to Fig. 13 is:

10 base, 102 bottom ventilation hole, 20 cavity, 34 heating cavity, 40 wind guide cover, 401 card slot, 402 fixing frame, 403 microwave generator, 404 first installation position, 405 power supply part, 406 second installation position, 407 The first heat dissipation hole, 408 The third installation position, 409 Micro switch, 410 The second heat dissipation hole, 411 The first support position, 412 Rib, 413 Hook, 414 Block, 415 The second support position, 416 Heat sink , 417 filter power board, 50 door body, 50a facade, 51 outer perspective layer, 52 inner perspective layer, 54 lower side movable guide rail, 55 lower side fixed guide rail, 552 lower side groove, 56 roller, 57 upper side can Moving guide rail, 58 upper fixed guide rails, 59 door body driving motors, 60 door body driving gears, 70 upper cover, 74 bottom fans.

Detailed ways

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from those described here, therefore, the protection scope of the utility model is not limited to the following limitations of the specific embodiments disclosed.

As shown in Fig. 2 to Fig. 13, Fig. 2 is a schematic diagram of the heating cooker involved in the embodiment of the present invention. FIG. 3 is a perspective view of the door body 50 in an open state. As shown in Figure 2 and Figure 3, the heating cooker mainly has a base 10, which can form a lower electrical room for the installation of electrical components such as a power supply board, a magnetron, and a frequency converter; a cylindrical cavity 20, which is set On the base 10, a heating cavity 34 for placing food is formed inside, and one side of the heating cavity 34 is formed as an opening for food to enter and exit; a semi-cylindrical door body 50 is arranged on the cavity 20 for closing or opening The opening of the heating cavity 34; the loam cake 70, which is set on the cavity 20, can form an upper electrical room (not shown) for the installation of electrical devices such as fans and voice control modules.

In any of the above-mentioned embodiments, preferably, as shown in FIG. 6 and FIG. 10 , an air guide cover 40 is arranged in the lower electric appliance room; The cooling air passage of at least one electrical device; the bottom fan 74 is arranged on the cooling air passage; wherein, the wind blown by the bottom fan 74 is blown to at least one electrical device through the cooling air passage, and is discharged out of the lower electric device through the bottom ventilation hole 102; or The bottom fan 74 extracts the heat generated by at least one electrical device through the cooling air duct, and discharges the heat generated by the lower electrical device through the bottom ventilation hole 102 .

In this embodiment, the base 10 can make the heating cooker stably placed on the table, and the lower electrical room formed inside it is used to install structures such as electrical components and the wind guide cover 40; The electrical components in the electrical components will generate heat during operation, causing the temperature in the lower electrical room to gradually increase. If the temperature in the lower electrical room is too high, it will seriously affect the service life of the electrical components. The fan 74 and the cooling air channel guide the wind blown by the bottom fan 74 to the electric device by using the cooling air channel; On the premise of low noise operation, the cooling efficiency of the electrical components can be further improved by adjusting the rotation speed of the bottom fan 74 .

In this embodiment, the cooling air channel formed on the wind guide cover 40 guides the wind blown by the bottom fan 74 to at least one electrical device; The cooling air duct is exhausted to achieve the purpose of rapid cooling of electrical components, reduce the damage of electrical components caused by the high temperature in the lower electrical room, prolong the service life of electrical components, and then improve the service life of the heating cooker.

In the above embodiment, preferably, as shown in FIG. 9 , a slot 401 is provided on the air guide cover 40 , and the bottom fan 74 is provided on the slot 401 .

In this embodiment, the bottom fan 74 is clamped on the air guide cover 40 through the slot 401 to realize the detachable connection between the bottom fan 74 and the air guide cover 40 , which facilitates the replacement and maintenance of the bottom fan 74 .

FIG. 4 is an assembly diagram of the door body 50 and its guide rail structure involved in the embodiment of the present invention. Fig. 5 is an exploded view of the door body 50 and its guide rail structure involved in the embodiment of the present invention. As shown in FIG. 4 and FIG. 5 , the door body 50 mainly includes: an outer see-through layer 51 formed in a substantially semi-cylindrical shape; an inner see-through layer 52 adapted to the outer see-through layer 51 and also formed in a substantially semi-cylindrical shape; The metal mesh layer, which is arranged between the outer see-through layer 51 and the inner see-through layer 52, is also formed into a roughly semi-cylindrical metal mesh layer. Many through holes are formed on its surface to prevent microwaves from passing through the outer see-through from the heating chamber 34 under the microwave heating function. The layer 51 and the inner see-through layer 52 are transmitted through, and together with the outer see-through layer 51 and the inner see-through layer 52, they constitute the door surface 50a; the lower side movable guide rail 54 formed in a substantially circular shape is used to fix the above-mentioned outer see-through from the lower side Layer 51, inner see-through layer 52 and the door face 50a that metal mesh layer forms; Lower side fixed guide rail 55, is used to support lower side movable guide rail 54 from the lower side and/or the outside, and lower side fixed guide rail 55 is provided with for the lower side. The lower side groove 552 (see FIG. 5 ) where the side movable guide rail 54 slides, and the lower side movable guide rail 54 is slidably arranged in the lower side groove 552; the lower side movable guide rail 54 can slide relative to the lower side fixed guide rail 55 Or through the rolling connection of a plurality of rolling elements (rollers 56) arranged between the two; the upper side movable guide rail 57 formed into a substantially circular ring, which is used to fix the above-mentioned door surface 50a from the upper side; the upper side fixed guide rail 58 , for supporting the upper side movable guide rail 57 from the upper side and/or the outside, the upper side fixed guide rail 58 is provided with an upper side groove (not shown) for the upper side movable guide rail 57 to slide, and the upper side can The movable guide rail 57 is slidably disposed in the upper groove; the upper movable guide rail 57 can slide relative to the upper fixed guide rail 58 or roll through a plurality of rollers (not shown) arranged between the two.

It should be noted that, in the figure, since the metal mesh layer is in close contact with the inner see-through layer 52 , the structure of the metal mesh layer is not specifically shown in the figure.

In this embodiment, the sliding part of the door body composed of the door surface 50a, the lower side movable guide rail 54 and the upper side movable guide rail 57 can be formed by the lower side fixed guide rail 55 and the upper side fixed guide rail 58 (the non-sliding part of the door body). The sliding structure in the form of a groove can not only ensure that the sliding part is in close contact with the non-sliding part, but also ensure that the sliding part is in a moderately loose contact with the non-sliding part, so it can ensure that the door body is relatively stable during the sliding process And it can prevent the sliding wear of the door body from being too fast and the sliding frictional resistance from being too large.

In addition, by setting rolling parts between the movable guide rails and the fixed guide rails on the upper and lower sides of the door body 50, the sliding connection between the movable guide rails and the fixed guide rails is changed to a rolling connection by rolling parts, further reducing the distance between the two guide rails. The friction resistance and wear make the opening and closing of the furnace door more smooth, improve the service life of the track structure, reduce maintenance costs, and prevent the dross generated by wear from hindering the sliding of the furnace door.

In any of the above embodiments, preferably, as shown in Fig. 5, Fig. 9 and Fig. 11 to Fig. 13, at least one electrical device includes a door body driving motor 59, and the wind guide cover 40 is formed with a fixing frame 402, and the door body is driven The motor 59 is located on the fixing frame 402 .

In this embodiment, the upper end of the door body driving motor 59 is provided with a door body driving gear 60, and the door body driving gear 60 can engage with the teeth formed on the annular inner surface of the lower movable guide rail 54, so that the door body 50 Can automatically rotate under the drive of door body drive motor 59.

In the above embodiment, preferably, as shown in FIG. 6 , FIG. 9 and FIG. 11 , at least one electrical device further includes a microwave generator 403 , and a first installation position for installing the microwave generator 403 is formed on the air guide cover 40 404. The first installation position 404 constitutes at least a part of the cooling air duct.

In this embodiment, for a heating cooker with a microwave function, such as a microwave oven, the microwave generator 403 can generate microwave energy, and use the microwave energy to heat food, with fast heating speed and high efficiency; the first installation position 404 constitutes a cooling A part of the cooling air duct of the electrical device, so that the heat generated by the microwave generator 403 itself can be discharged along the cooling air duct or the wind blown by the fan at the bottom is blown to the microwave generator 403 along the cooling air duct, so as to realize rapid cooling of the microwave generator 403 .

It should be noted that the microwave generator 403 can be a magnetron or a semiconductor microwave source. Of course, the microwave generator 403 is not limited to a magnetron or a semiconductor microwave source, and is also applicable to other components that can generate microwave energy. Enumerate one by one again, because these technical proposals all can realize the object of the utility model, and all do not deviate from the design idea and purpose of the utility model, thereby all should be within the protection scope of the utility model.

In the above embodiment, preferably, as shown in FIG. 6 , FIG. 9 and FIG. 11 , at least one electrical device further includes a power supply part 405 , and a second installation position 406 for installing the power supply part 405 is formed on the windshield 40 , The first installation position 404 and the second installation position 406 form at least a part of the cooling air duct.

In this embodiment, the power supply part 405 is one of the electrical components of the heating cooker, which can convert the mains voltage into a working voltage that can drive the microwave generator 403 and other electrical components to work. The matching first installation position 404 and the second installation position The second installation position 406 constitutes a part of the cooling air channel for cooling electrical components, so that the heat generated by the microwave generator 403 and the power supply part 405 itself can be discharged along the cooling air channel or the wind blown by the bottom fan is blown to the microwave generator along the cooling air channel 403 and the power supply part 405 to realize rapid cooling of the microwave generator 403 and the power supply part 405.

It should be noted that the power supply unit 405 can be a frequency converter or a transformer. Of course, the power supply unit 405 is not limited to a frequency converter or a transformer, and is also applicable to other converters with voltage conversion functions. All the technical solutions can realize the purpose of the utility model, and all do not deviate from the design idea and purpose of the utility model, so all should be within the protection scope of the utility model.

In the above embodiment, preferably, as shown in FIG. 9 , FIG. 12 and FIG. 13 , the wind guide cover 40 is provided with a first cooling hole 407 for cooling the door drive motor 59 , the first installation position 404 , the second The installation position 406 and the first cooling hole 407 form at least a part of the cooling air duct.

In this embodiment, the first cooling hole 407 together with the first mounting position 404 and the second mounting position 406 constitute a cooling air duct for rapid cooling of the door body drive motor 59; 59 is fixed on the air guide cover 40, so that the connection between the door body drive motor 59 and the air guide cover 40 is more stable.

In the above embodiment, preferably, as shown in FIG. 6 and FIG. 9 , the top of the air guide cover 40 is provided with a third installation position 408, at least one electrical device includes a micro switch 409, and the micro switch 409 is located at the third Install bit 408.

In this embodiment, the micro switch 409 is used to control the opening and closing of electrical components such as the door body drive motor 59 and the microwave generator 403, so as to realize the automatic opening or closing of the door body, which not only increases the convenience of the user, but also improves the In addition, the micro switch 409 realizes functions such as opening the door and powering off, preventing the microwave leakage that may be generated by the heating cooker after the door body 50 is opened, and improving the safety factor of the cooker.

In the above embodiment, preferably, as shown in FIG. 6 , FIG. 9 and FIG. 11 , a second cooling hole 410 is provided on the top of the air guide cover 40 corresponding to the third installation position 408 for cooling the micro switch. 409 , the first mounting position 404 , the second mounting position 406 , the first cooling hole 407 and the second cooling hole 410 constitute at least a part of the cooling air duct.

In this embodiment, the second heat dissipation hole 410, the first installation position 404, the second installation position 406 and the first heat dissipation hole 407 form a cooling air channel for cooling the micro switch 409, and the cooling air channel blows out the bottom fan The wind guides the micro switch 409; or the heat generated by the micro switch 409 is exported through the cooling air duct.

In any of the above-mentioned embodiments, preferably, as shown in FIG. 9 , at least one part of the air guide 40 and the cavity 20 is provided with a first support position 411, and the cavity 20 and the air guide 40 are supported by the first support. Bit 411 is connected.

In this embodiment, the first support position 411 for supporting the cavity 20 is set between the air guide cover 40 and the cavity 20, which can effectively reduce the high temperature in the cavity 20 from being transmitted to the wind guide cover 40, thereby avoiding the The rapid temperature rise of the air cover 40 increases the difficulty of heat dissipation in the lower electrical room.

Further, ribs 412 are arranged at intervals on the first supporting position 411 .

In this embodiment, the convex ribs 412 arranged at intervals on the first support position 411 form a heat dissipation gap between the air guide cover 40 and the cavity 20, and through the heat dissipation gap, the heat generated in the cavity due to the operation of the heating cooker Effective heat dissipation is performed to simultaneously cool the cavity 20 and the air guide cover 40 .

In any of the above embodiments, preferably, as shown in FIG. 8 and FIG. 12 , at least one set of clamping components is further included, each set of clamping components includes a hook 413 and a block 414 that cooperate with each other, and the hook 413 and One of the blocks 414 is disposed on the base 10 , and the other is disposed on the air guide cover 40 .

In this embodiment, the cavity body 20 is snapped onto the air guide cover 40 through the matching hooks 413 and blocks 414, so that the detachable connection between the cavity body 20 and the air guide cover 40 is realized, and the connection between the cavity body and the wind guide cover is facilitated. 40 disassembly and assembly.

In any of the above embodiments, preferably, as shown in FIG. 7 , the base 10 is provided with a second support position 415, the wind guide cover 40 is disposed on the second support position 415, and the second support position 415 is provided with cooling Sheet 416.

In this embodiment, a second support position 415 for supporting the cavity 20 is provided between the air guide cover 40 and the cavity 20 to further reduce the high temperature in the cavity 20 from being transmitted to the wind guide cover 40, thereby avoiding wind deflection. The rapid temperature rise of the cover 40 increases the difficulty of heat dissipation in the lower electrical room.

In this embodiment, the heat dissipation fins 416 arranged at intervals on the second support position 415 form another heat dissipation gap between the air guide cover 40 and the cavity 20, through which heat dissipation is generated in the cavity 20 due to the operation of the heating cooker. The heat is effectively dissipated, so as to realize the cooling of the cavity 20 and the air guide cover 40 at the same time.

Further, as shown in FIG. 6 , at least one electrical device further includes a filter power board 417 installed on the air guide cover 40 for filtering the circuit of the heating cooker.

The technical scheme of the utility model has been described in detail above in conjunction with the accompanying drawings. The heating cooker provided by the utility model has a base 10 that enables the heating cooker to be placed on the table stably, and the lower electrical room formed inside is used for installing electrical devices and conductors. Wind cover 40 and other structures; during the working process of the heating cooker, the operation of the internal electrical components will generate heat, causing the temperature in the lower electrical room to rise. If the temperature in the lower electrical room is too high, it will seriously affect the service life of the electrical components. Therefore, a matching bottom fan 74 and a cooling air duct are provided on the air guide cover 40, and the cooling air duct is used to guide the wind blown by the bottom fan 74 to the electrical device; or the heat generated by the electrical device is extracted from the cooling air duct to realize Rapid cooling of electrical components, and on the premise of ensuring low-noise operation of the cooker, the cooling efficiency of electrical components is further improved by adjusting the rotating speed of the bottom fan 74 .

In the present utility model, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or two more than one, unless otherwise expressly limited. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "up", "down", "left", "right", "front", "rear" etc. are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, cannot be understood as a reference to the utility model. limits.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in the present application. Novel at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (12)

1. A heating cooker, characterized in that, comprising: The base (10), the lower electrical room is formed inside it, and the bottom ventilation hole (102) is formed on the base (10); A cylindrical cavity (20), which is arranged on the base (10), has a heating cavity (34) for placing food inside, and one side of the heating cavity (34) is formed as an opening for food to enter and exit ; a semi-cylindrical door body (50), which is arranged on the cavity (20), and is used to close or open the opening; The wind guide cover (40) is arranged in the lower electric appliance room; At least one electrical component is arranged on the wind guide cover (40), and a cooling air passage for cooling at least one of the electrical components is formed on the wind guide cover (40); A bottom fan (74), arranged on the cooling air duct; Wherein, the wind blown by the bottom fan (74) is blown to at least one of the electrical components through the cooling air duct, and is exhausted out of the lower electrical room through the bottom ventilation hole (102); or the bottom fan ( 74) The heat generated by at least one electrical device is drawn out from the cooling air duct, and discharged out of the lower electrical room through the bottom ventilation holes (102). 2. The heating cooker according to claim 1, characterized in that, the air guide cover (40) is provided with a card slot (401), and the bottom fan (74) is provided in the card slot (401) superior. 3. The heating cooker according to claim 1 or 2, characterized in that at least one of the electrical components includes a door body driving motor (59), and the wind guide cover (40) is formed with a fixing frame (402), The door driving motor (59) is arranged on the fixing frame (402). 4. The heating cooker according to claim 3, characterized in that, at least one of the electrical components further comprises a microwave generator (403), and the wind guide cover (40) is formed with a microwave for installing the microwave generator. The first installation position (404) of (403), the first installation position (404) constitutes at least a part of the cooling air duct. 5. The heating cooker according to claim 4, characterized in that at least one of the electrical components further includes a power supply part (405), and the wind guide cover (40) is formed on the windshield (40) for installing the power supply part (405). ), the first installation position (404) and the second installation position (406) constitute at least a part of the cooling air duct. 6. The heating cooker according to claim 5, characterized in that, a first cooling hole (407) for cooling the door body drive motor (59) is opened on the wind guide cover (40), and the The first installation position (404), the second installation position (406) and the first cooling hole (407) constitute at least a part of the cooling air duct. 7. The heating cooker according to claim 6, characterized in that, the top of the air guide cover (40) is provided with a third installation position (408), and at least one of the electrical components includes a micro switch (409) , the micro switch (409) is arranged on the third installation position (408). 8. The heating cooker according to claim 7, characterized in that, a second cooling hole (410) is provided at a position corresponding to the third installation position (408) on the top of the air guide cover (40), Used to cool the micro switch (409), the first mounting position (404), the second mounting position (406), the first cooling hole (407) and the second cooling hole (410 ) constitute at least a part of the cooling air duct. 9. The heating cooker according to claim 1 or 2, characterized in that at least one part of the air guide cover (40) and the cavity (20) is provided with a first support position (411), The cavity (20) is connected with the wind guide cover (40) through the first support position (411). 10 . The heating cooker according to claim 9 , characterized in that, ribs ( 412 ) are arranged at intervals on the first support position ( 411 ). 11 . 11. The heating cooker according to claim 1 or 2, characterized in that it further comprises at least one set of clamping components, and each set of clamping components includes a hook (413) and a clamping block (414) that cooperate with each other , one of the hook (413) and the block (414) is arranged on the base (10), and the other is arranged on the wind guide cover (40). 12. The heating cooker according to claim 1 or 2, characterized in that, the base (10) is provided with a second support position (415), and the air guide cover (40) is provided on the second support On the position (415), the second support position (415) is provided with cooling fins (416) at intervals.