CN212204637U

CN212204637U - Electric cooking appliance

Info

Publication number: CN212204637U
Application number: CN202020941169.8U
Authority: CN
Inventors: 王东东; 陈茂顺; 杨柳; 朱之飞
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-12-22
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a cooking appliance, cooking appliance include cavity, automatically controlled subassembly, converter subassembly, magnetron subassembly and fan, and automatically controlled subassembly, converter subassembly, magnetron subassembly and fan all set up in the bottom of cavity, and converter subassembly, magnetron subassembly and fan all are connected with automatically controlled subassembly electricity. The electric control assembly, the frequency converter assembly, the magnetron assembly and the fan are communicated to form an air channel, and the fan is used for forming air flow flowing through the electric control assembly, the frequency converter assembly and the magnetron assembly. Therefore, the air flow passing through the electric control assembly, the frequency converter assembly and the magnetron assembly can be formed through a single fan, so that the electric control assembly, the frequency converter assembly and the magnetron assembly are simultaneously cooled, a plurality of fans which are not needed to be independently cooled are not needed, and the equipment volume occupied by the cooling system can be reduced while the cooling effect of the cooking appliance is improved.

Description

Electric cooking appliance

Technical Field

The utility model discloses electrical apparatus technical field, in particular to cooking appliance.

Background

At present, the combined cooker has micro-steaming, micro-baking, micro-steaming and micro-baking integrated machines and the like, can be independently realized, has the functions of microwave heating, baking and steam, and also can realize the combined functions of micro-baking, micro-steaming, steaming and micro-baking. With the increase of functions, the power consumption of the product is improved to a certain extent.

In the related art, in order to solve the heat dissipation problem of the cooking appliance, a plurality of fans are generally adopted to perform separate heat dissipation on different heat generating components, and although the problem of temperature rise of the cooking appliance can be better solved, the increase of the number of the fans increases the cost investment of the product and increases the equipment volume occupied by a heat dissipation system, so how to improve the heat dissipation effect of the cooking appliance and reduce the equipment volume occupied by the heat dissipation system becomes a problem for technical personnel to study.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an embodiment provides a cooking appliance.

The utility model discloses embodiment's cooking device includes the cavity and sets automatically controlled subassembly, converter subassembly, magnetron subassembly and the fan of cavity bottom, the converter subassembly the magnetron subassembly and the fan all with automatically controlled subassembly electricity is connected, automatically controlled subassembly the converter subassembly magnetron subassembly and the fan intercommunication is formed with the wind channel, the fan is used for forming to flow through automatically controlled subassembly the converter subassembly with magnetron subassembly's air current.

The utility model discloses among embodiment's the cooking device, the fan can directly form flow through automatically controlled subassembly the converter subassembly with thereby the air current of magnetron subassembly dispels the heat. Therefore, the air flow passing through the electric control assembly, the frequency converter assembly and the magnetron assembly can be formed through a single fan, so that the electric control assembly, the frequency converter assembly and the magnetron assembly are simultaneously cooled, a plurality of fans which are not needed to be independently cooled are not needed, and the equipment volume occupied by the cooling system can be reduced while the cooling effect of the cooking appliance is improved.

In some embodiments, the cooking appliance further comprises a bottom plate on which the cavity is mounted, the bottom plate being formed with air inlet holes communicating with the air duct.

In some embodiments, the bottom plate includes a plate portion and a bending portion connected to the plate portion and bending toward a side of the cavity with respect to the plate portion, and the air inlet hole includes a first air inlet hole opened on the plate portion and a second air inlet hole opened on the bending portion.

In some embodiments, the cooking appliance further includes a wind scooper, the wind scooper is communicated with the wind channel and located at a downstream of the wind channel, and the wind scooper is used for guiding the airflow out of the wind channel.

In some embodiments, the cooking appliance further includes a housing, the cavity is disposed in the housing, a wind guide channel is formed between the cavity and the housing, the wind guide channel is communicated with the wind guide cover and the outside of the cooking appliance, and the wind guide channel is used for guiding the airflow flowing out of the wind guide cover to the outside of the cooking appliance.

In some embodiments, the casing includes a top plate, a side plate, and a back plate, the side plate and the back plate are connected to different sides of the top plate, the back plate is provided with an air guide outlet, and the air guide outlet is communicated with the air guide channel.

In some embodiments, the electronic control assembly, the fan, the frequency converter assembly, and the magnetron assembly are arranged in sequence along an axial direction of the air duct.

In some embodiments, the cooking appliance further includes a wind scooper, the wind scooper and the magnetron assembly are arranged at an interval, the wind scooper is used for guiding the airflow out of the air duct, and the frequency converter assembly and the magnetron assembly are arranged at an interval.

In some embodiments, the electric control assembly is formed with a channel, the channel forms part of the air duct, the cooking appliance further comprises a bottom plate, the cavity is mounted on the bottom plate, the bottom plate is provided with an air inlet hole, and the channel is communicated with the air inlet hole.

In some embodiments, the cooking appliance further includes a control panel, and the number of the air outlets of the fan is multiple, wherein at least one of the air outlets communicates with the frequency converter assembly, and at least one of the air outlets communicates with the control panel.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a cooking appliance according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a cooking appliance according to an embodiment of the present invention;

fig. 3 is a further schematic structural diagram of a cooking appliance according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a cooking appliance according to an embodiment of the present invention.

Description of the main element symbols:

cooking electric appliance 100, air duct 101, cavity 10, electronic control assembly 20, channel 21, frequency converter assembly 30, magnetron assembly 40, fan 50, bottom plate 60, air inlet 61, first air inlet 611, second air inlet 612, plate portion 62, bending portion 63, door 70, air guide cover 80, casing 90, air guide channel 91, top plate 92, side plate 93, back plate 94, air guide outlet 941, and waveguide assembly 110.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, a cooking appliance 100 according to an embodiment of the present invention includes a cavity 10, an electronic control assembly 20, a frequency converter assembly 30, a magnetron assembly 40, and a fan 50, wherein the electronic control assembly 20, the frequency converter assembly 30, the magnetron assembly 40, and the fan 50 are all disposed at the bottom of the cavity 10, and the frequency converter assembly 30, the magnetron assembly 40, and the fan 50 are all electrically connected to the electronic control assembly 20. The electronic control assembly 20, the inverter assembly 30, the magnetron assembly 40 and the fan 50 are communicated to form an air channel 101, and the fan 50 is used for forming air flow passing through the electronic control assembly 20, the inverter assembly 30 and the magnetron assembly 40.

Specifically, in the embodiment of the present invention, the cooking appliance 100 includes but is not limited to a microwave oven, an oven or a microwave oven integrating microwave and oven, and the cavity 10 is used for placing an object to be cooked.

It can be understood that, in the related art, in order to solve the heat dissipation problem of the cooking appliance, a plurality of fans are generally adopted to perform separate heat dissipation on different heat generating components, and although the problem of temperature rise of the appliance can be better solved, the increase of the number of fans increases the cost investment of the product, and increases the volume of the equipment occupied by the heat dissipation system.

In the cooking appliance 100 according to the embodiment of the present invention, the fan 50 may directly form an air flow passing through the electronic control assembly 20, the inverter assembly 30 and the magnetron assembly 40 to dissipate heat. In this way, the air flow passing through the electric control assembly 20, the frequency converter assembly 30 and the magnetron assembly 40 can be formed by a single fan 50, so that the electric control assembly 20, the frequency converter assembly 30 and the magnetron assembly 40 can be simultaneously cooled, a plurality of fans 50 are not required to be independently cooled, and the heat dissipation effect of the cooking appliance is improved while the equipment volume occupied by the heat dissipation system can be reduced.

It should be noted that "the electronic control assembly 20, the inverter assembly 30, the magnetron assembly 40, and the fan 50 are communicated to form the air duct 101" may be understood that there is a direct contact connection between the electronic control assembly 20, the inverter assembly 30, the magnetron assembly 40, and the fan 50, or there is an air flow that is arranged two by two at intervals but flows out from the former to directly enter the latter. That is, in the embodiment of the present invention, the air duct 101 may be formed by connecting the electronic control assembly 20, the inverter assembly 30, the magnetron assembly 40, and the fan 50 together continuously or by arranging the electronic control assembly 20, the inverter assembly 30, the magnetron assembly 40, and the fan 50 at intervals or partially at intervals corresponding to each other and enabling air flow interaction, for example, the magnetron assembly 40 and the inverter assembly 30 are arranged at intervals. In some embodiments, the electronic control assembly 20, the inverter assembly 30, the magnetron assembly 40, and the fan 50 form a portion of the air channel, and the entire air channel 101 can be formed by connecting or spacing the corresponding arrangement.

Furthermore, in the embodiment of the present invention, the electronic control assembly 20 may include a control circuit board, which is connected to the inverter assembly 30, the magnetron assembly 40 and the fan 50, so as to control the operating states of the inverter assembly 30, the magnetron assembly 40 and the fan 50. The magnetron assembly 40 is used to generate microwaves.

Referring to fig. 2, in some embodiments, the cooking appliance 100 further includes a bottom plate 60, the cavity 10 is mounted on the bottom plate 60, and the bottom plate 60 is formed with air inlet holes 61 communicated with the air duct 101.

Thus, on the one hand, the bottom plate 60 can carry and support the chamber 10, and on the other hand, when the fan 50 is operated, the external air can enter the air duct 101 through the air inlet holes 61 on the bottom plate 60.

Specifically, when the fan 50 is operated, a negative pressure is generated at the air inlet of the fan 50, so that under the action of the negative pressure, external air enters the bottom plate 60 through the air inlet holes 61 on the bottom plate 60 and then enters the air duct 101.

Further, referring to fig. 2 and 3, in some embodiments, the bottom plate 60 includes a plate portion 62 and a bent portion 63, the bent portion 63 is connected to the plate portion 62 and is bent toward a side of the cavity 10 relative to the plate portion 62, and the air inlet hole 61 includes a first air inlet hole 611 formed in the plate portion 62 and a second air inlet hole 612 formed in the bent portion 63.

Therefore, when heat is dissipated, air can be fed from the bottom of the bottom plate 60 through the first air inlet holes 612, and air can also be fed from the front side of the bottom plate 60 through the second air inlet holes 612, so that the problem that air cannot be fed or the air inlet is too small due to blockage of one air inlet hole can be solved.

Specifically, in the embodiment, the number of the first air inlet holes 612 is multiple, the number of the second air inlet holes 612 is multiple, and both the first air inlet holes 612 and the second air inlet holes 612 can be circular holes or mesh holes or holes with other shapes, which is not limited in particular.

The utility model discloses an among the embodiment, cooking device 100 still includes door body 70, and door body 70 is connected at cavity 10 and can rotate in order to open or close cavity 10 relative cavity 10, and door body 70 is located cooking device 100's front side, and also cooking device 100 is towards the one side at user place when the user normally puts, and kink 63 also is located cooking device 100's front side.

Referring to fig. 1, in some embodiments, the cooking appliance 100 further includes a wind scooper 80, the wind scooper 80 is connected to the wind channel 101 and located at a downstream of the wind channel 101, and the wind scooper 80 is used for guiding the airflow out of the wind channel 101.

In this way, the airflow passing through the electronic control assembly 20, the frequency converter assembly 30 and the magnetron assembly 40 can be guided out through the wind scoops 80.

Referring to fig. 1, in some embodiments, the electric control assembly 20, the fan 50, the frequency converter assembly 30, and the magnetron assembly 40 are sequentially arranged along the axial direction of the air duct 101.

Thus, when the fan 50 works, the air flow firstly enters the electric control assembly 20 to dissipate heat, then enters the air inlet of the fan 50, and then flows out of the air outlet of the fan 50, so as to sequentially flow through the frequency converter assembly 30 and the magnetron assembly 40 to sequentially dissipate heat of the frequency converter assembly 30 and the magnetron assembly 40.

It should be noted that "the axial direction of the air duct 101" may be understood as the center line direction of the air duct 101, that is, the direction of the airflow, and in the following embodiments, if the same or similar descriptions appear, they may also be understood by referring to the description herein.

That is, in such an embodiment, the air flow enters through the air inlet holes 61 of the bottom plate 60, first enters the electronic control assembly 20, then enters the fan 50, then flows out of the fan 50, flows through the frequency converter assembly 30, and then flows through the magnetron assembly 40, thereby achieving heat dissipation of the electronic control assembly 20, the frequency converter assembly 30, and the magnetron assembly 40 in sequence. The air guiding cover 80 is disposed at the most downstream of the air duct 101, and the air flowing through the frequency converter assembly 30 and the magnetron assembly 40 finally flows into the air guiding cover 80 to guide the air out, wherein the dotted arrows in fig. 1 indicate the flowing path of the air.

Further, in some embodiments, the wind scooper 80 is spaced apart from the magnetron assembly 40, the wind scooper 80 is used for guiding the airflow out of the wind tunnel 101, and the frequency converter assembly 30 is spaced apart from the magnetron assembly 40.

Thus, the air guide cover 80 and the magnetron assembly 40 are spaced apart from each other, so that heat generated from the magnetron assembly 40 is prevented from being directly transferred to the air guide cover 80 to burn out the air guide cover 80. The spaced arrangement of the transducer assembly 30 and the magnetron assembly 40 also prevents heat generated by the magnetron assembly 40 from being transferred directly to the transducer assembly 30.

Specifically, in the present embodiment, the wind scooper 80 may be made of a plastic material, and the wind scooper 80 is spaced apart from the magnetron assembly 40 to prevent heat generated by the magnetron assembly 40 from melting the wind scooper 80. In addition, the housing of the frequency converter assembly 30 is typically also made of a plastic material. The spaced arrangement of the transducer assembly 30 from the magnetron assembly 40 also prevents heat generated by the magnetron assembly 40 from melting the outer jacket of the transducer assembly 30. It is to be understood that "spaced apart" in the present embodiment may be understood as the two being spaced apart, but that air flow interaction may occur between the two.

Referring to fig. 1 to 4, in some embodiments, the cooking electrical appliance 100 further includes a casing 90, the cavity 10 is disposed in the casing 90, an air guide channel 91 is formed between the cavity 10 and the casing 90, the air guide channel 91 is communicated with the air guide cover 80 and the outside of the cooking electrical appliance 100, and the air guide channel 91 is used for guiding the air flow flowing out of the air guide cover 80 to the outside of the cooking electrical appliance 100.

In this way, the air guiding channel 91 can guide the hot air with heat in the air guiding cover 80 out of the cooking appliance 100.

Specifically, in such an embodiment, the cavity 10 is disposed in the casing 90, a gap is formed between the cavity 10 and the casing 90, the gap forms the air guide channel 91, and the air flow flowing out of the air guide cover 80 enters the air guide channel 91 and then flows out of the cooking appliance 100. It is understood that the air guide channel 91 may be formed by a space between the housing 90 and the cavity 10. Of course, in some embodiments, the air guiding channel 91 may also be directly formed on the housing 90 or installed on the housing 90 by installing an additional air duct 101, which is not limited in particular.

Referring to fig. 1, fig. 2 and fig. 4, in some embodiments, the housing 90 includes a top plate 92, a side plate 93 and a back plate 94, the side plate 93 and the back plate 94 are connected to different sides of the top plate 92, the back plate 94 is provided with an air guiding outlet 941, and the air guiding outlet 941 is communicated with the air guiding channel 91.

It is understood that in such an embodiment, the top plate 92 is located at the top of the chamber 10, the side plates 93 are located at both sides of the top plate 92, and the back plate 94 is located at the back of the chamber 10, that is, the back plate 94 is opposite to the door body 70.

In this way, after dissipating heat from the electronic control assembly 20, the inverter assembly 30 and the magnetron assembly 40, the airflow enters the air guiding channel 91 and then flows out from the air guiding outlet 941 on the back plate 94. In this way, the airflow with heat flows out from the back of the cooking appliance 100, which does not affect the user and improves the user experience.

Referring to fig. 1, in some embodiments, the electronic control assembly 20 is formed with a channel 21, the channel 21 forms part of the air duct or the channel 21 is part of the air duct 101, and the channel 21 is communicated with the air inlet 61 of the bottom plate 60.

Thus, the air flow entering from the air inlet hole 61 directly enters the electric control assembly 20 through the channel 21 on the electric control assembly 20 to dissipate heat of the electric control assembly 20, and then dissipates heat of the frequency converter assembly 30 and the magnetron assembly 40.

It is understood that the channel 21 may be a partition board disposed on the circuit board of the electronic control assembly 20, the partition board forming the channel 21 therebetween, and the air inlet of the channel 21 corresponds to the second air inlet 612 of the board portion 62. Of course, in some embodiments, the electrical control assembly 20 may also include an electrical control box for receiving electrical control components, such as a circuit board, and the electrical control box is formed with a through hole extending through an outer wall of the electrical control box to form the channel 21.

Furthermore, in the illustrated embodiment, the electric control assembly 20, the fan 50, the frequency converter assembly 30 and the magnetron assembly 40 are arranged in sequence along the axial direction of the air duct 101, and the flow path of the air flow is as follows: the electronic control assembly 20, the fan 50, the frequency converter assembly 30, the magnetron assembly 40 and the wind scooper 80. Like this, because the heat that converter subassembly 30 produced is great, 50 air outlets of fan blow the air current to converter subassembly 30, and 50 air outlets of fan are close with converter subassembly 30 distance, and here wind speed is very fast, can better take away the heat that the converter produced.

It is understood that in other embodiments, the electronic control assembly 20, the fan 50, the inverter assembly 30 and the magnetron assembly 40 may be arranged in other manners, for example, the air flow path may be: the electric control assembly 20-the frequency converter assembly 30-the fan 50-the magnetron-the wind scooper 80; or the fan 50, the electronic control assembly 20, the frequency converter assembly 30, the magnetron, and the wind scooper 80, and the specific arrangement thereof is limited.

Furthermore, it can be understood that, in the embodiment of the present invention, the number of the air inlets and the air outlets of the fan 50 may be one or more, and in case that there are a plurality of air inlets in the fan 50, one of the air inlets may communicate with the electronic control assembly 20, and the other air inlets are directly connected to the air inlet holes 61 on the bottom plate 60.

In the case that the fan 50 has a plurality of air outlets, at least one of the air outlets may be communicated with subsequent components, such as the frequency converter assembly 30, at least one of the air outlets is communicated with other components of the cooking appliance 100, such as a control panel (not shown) of the cooking appliance 100 through an additional ventilation duct, so as to dissipate heat from the control panel, the control panel may be configured to receive an input instruction from a user to control an operation state of the cooking appliance 100, such as turning on, turning off, setting cooking time, and the like, and the control panel may include at least one of a button, a knob, and a touch display screen. In this way, the fan 50 can simultaneously dissipate heat from the control panel of the cooking appliance 100 without providing an additional heat dissipation fan.

Referring to fig. 1, in some embodiments, the cooking appliance 100 further includes a waveguide assembly 110, and the waveguide assembly 110 is connected to the magnetron assembly 40.

In this manner, the microwave generated from the magnetron assembly 40 may be introduced into the cavity 10 through the waveguide assembly 110 to heat the contents of the cavity 10.

In addition, in the illustrated embodiment, the air intake holes 61 on the bottom plate 60 are formed on the plate portion 62 and the bent portion 63, and it is understood that in other embodiments, the air intake holes 61 may be formed on other positions of the bottom plate 60, for example, on the back or side of the bottom plate 60, and are not limited herein.

In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and variations may be made therein by those of ordinary skill in the art without departing from the scope of the present invention, which is defined by the claims and their equivalents.

Claims

1. An electric cooking appliance, characterized in that it comprises:

a cavity;

the cavity comprises an electric control assembly, a frequency converter assembly, a magnetron assembly and a fan, wherein the electric control assembly, the frequency converter assembly, the magnetron assembly and the fan are all electrically connected with the electric control assembly, an air channel is formed by the electric control assembly, the frequency converter assembly, the magnetron assembly and the fan in a communicated mode, and the fan is used for forming air flow passing through the electric control assembly, the frequency converter assembly and the magnetron assembly.

2. The cooking appliance according to claim 1, further comprising a bottom plate on which the cavity is mounted, the bottom plate being formed with air inlet holes communicating with the air duct.

3. The electrical cooking appliance according to claim 2, wherein the bottom plate comprises a plate portion and a bending portion connected to the plate portion, the bending portion is bent toward a side of the cavity with respect to the plate portion, and the air inlet holes comprise a first air inlet hole formed in the plate portion and a second air inlet hole formed in the bending portion.

4. The cooking appliance according to claim 1, further comprising a wind scooper in communication with the wind tunnel and located downstream of the wind tunnel, the wind scooper configured to direct airflow out of the wind tunnel.

5. The cooking appliance according to claim 4, wherein the cooking appliance further comprises a housing, the cavity is disposed in the housing, a wind guide channel is formed between the cavity and the housing, the wind guide channel is communicated with the wind guide cover and the outside of the cooking appliance, and the wind guide channel is used for guiding the airflow flowing out of the wind guide cover to the outside of the cooking appliance.

6. The cooking appliance according to claim 5, wherein the housing includes a top plate, a side plate and a back plate, the side plate and the back plate are connected to different sides of the top plate, the back plate is provided with a wind guide outlet, and the wind guide outlet is communicated with the wind guide channel.

7. The electrical cooking appliance according to claim 1, wherein the electrical control assembly, the fan, the inverter assembly and the magnetron assembly are arranged in sequence along an axial direction of the air duct.

8. The cooking appliance according to claim 7, further comprising a wind scooper spaced apart from the magnetron assembly for directing airflow out of the air duct, the frequency converter assembly being spaced apart from the magnetron assembly.

9. The electrical cooking appliance according to claim 7, wherein the electrical control assembly forms a channel, the channel forms part of the air duct, the electrical cooking appliance further comprises a bottom plate, the cavity is mounted on the bottom plate, the bottom plate is provided with air inlet holes, and the channel is communicated with the air inlet holes.

10. The cooking appliance according to claim 7, further comprising a control panel, wherein the number of the air outlets of the fan is plural, at least one of the air outlets communicates with the frequency converter assembly, and at least one of the air outlets communicates with the control panel.