阅读说明：本技术 风扇座、风道组件及烹饪器具 (Fan base, air duct assembly and cooking utensil ) 是由 胡杰 张乐东 刘存 于 2021-08-18 设计创作，主要内容包括：本发明公开了风扇座、风道组件及烹饪器具,风道组件包括风扇座,风扇座具有座体,座体的一侧设置有风轮腔,座体的一端设置有连通风轮腔的第一风道,座体的另一端设置有连通风轮腔的第二风道,第二风道具有至少两个输出口,座体的另一侧设置有安装腔,安装腔连通至少一个输出口,风轮腔的底部设置有通孔,通孔中布置有电机支架；风轮腔中设置有风轮,风轮连接有固定于电机支架的电机。电机驱动风轮旋转以产生散热气流,第一风道输出的散热气流能够对烹饪器具的至少一个部件散热,而第二风道能够对烹饪器具的至少两个部件散热,满足同时对多个部件进行散热,提高散热效率,减少风扇数量,有助于简化烹饪器具的结构,降低制造成本。(The invention discloses a fan seat, an air duct assembly and a cooking appliance, wherein the air duct assembly comprises a fan seat, the fan seat is provided with a seat body, one side of the seat body is provided with an air wheel cavity, one end of the seat body is provided with a first air duct connected with the air wheel cavity, the other end of the seat body is provided with a second air duct connected with the air wheel cavity, the second air duct is provided with at least two output ports, the other side of the seat body is provided with an installation cavity, the installation cavity is communicated with at least one output port, the bottom of the air wheel cavity is provided with a through hole, and a motor support is arranged in the through hole; the wind wheel is arranged in the wind wheel cavity and is connected with a motor fixed on the motor bracket. The motor drive wind wheel is rotatory in order to produce the heat dissipation air current, and the heat dissipation air current of first wind channel output can dispel the heat to cooking utensil's at least one part, and the second wind channel can dispel the heat to cooking utensil's two at least parts, satisfies to dispel the heat to a plurality of parts simultaneously, improves the radiating efficiency, reduces fan quantity, helps simplifying cooking utensil's structure, reduces manufacturing cost.)

1. Fan seat, its characterized in that includes:

the base body is provided with a wind wheel cavity, one end of the base body is provided with a first air duct communicated with the wind wheel cavity, the other end of the base body is provided with a second air duct communicated with the wind wheel cavity, and the second air duct is provided with at least two output ports;

and the motor support is arranged in the through hole at the bottom of the wind wheel cavity.

2. The fan tray according to claim 1, wherein the tray body is provided with a first air guide plate located in the first air duct, the first air guide plate dividing the first air duct into two passages.

3. The fan tray according to claim 1, wherein the tray body is provided with a second flow guide plate located in the second air duct, the second flow guide plate being two and dividing the second air duct into three passages.

4. The fan base according to any one of claims 1 to 3, wherein the wind wheel cavity is located on one side of the base body, and a mounting cavity is provided on the other side of the base body, and the mounting cavity communicates with at least one of the output ports.

5. Air duct assembly, its characterized in that includes:

the fan seat is provided with a seat body, one side of the seat body is provided with a wind wheel cavity, one end of the seat body is provided with a first air duct communicated with the wind wheel cavity, the other end of the seat body is provided with a second air duct communicated with the wind wheel cavity, the second air duct is provided with at least two output ports, the other side of the seat body is provided with an installation cavity, the installation cavity is communicated with at least one output port, the bottom of the wind wheel cavity is provided with a through hole, and a motor support is arranged in the through hole;

the wind wheel is arranged in the wind wheel cavity and is connected with a motor fixed on the motor support.

6. The air duct assembly according to claim 5, wherein the base is provided with a second air guide plate located in the second air duct, the second air guide plate is two and divides the second air duct into a first air guide channel, a second air guide channel and a third air guide channel, the fan base is connected with a first air guide cover and a third air guide cover, the first air guide channel is communicated with the first air guide cover, the second air guide channel is communicated with the mounting cavity, and the third air guide channel is communicated with the third air guide cover.

7. The air duct assembly according to claim 6, wherein the fan base is connected with a second air guiding cover, and a gap communicated with the second air guiding cover is formed in a side wall of the mounting cavity.

8. The air duct assembly according to claim 5, wherein a fourth air guiding cover is connected to the fan base, the fourth air guiding cover is communicated with the first air duct, and a mounting position is arranged inside the fourth air guiding cover.

9. Cooking appliance, characterized in that it comprises a duct assembly according to any one of claims 5 to 8.

10. The cooking appliance of claim 9, further comprising a base plate covering the air duct assembly, the base plate being provided with a plurality of air inlet openings.

Technical Field

The invention relates to the technical field of microwave ovens, in particular to a fan seat, an air duct assembly and a cooking appliance.

Background

In the related art, a cooking appliance, such as a micro-steaming and baking integrated machine or a microwave oven, has a plurality of heating components, and a fan assembly for cooling the microwave oven usually only can singly dissipate heat of a certain unitary component, so that the cooling pertinence is weak, the heat dissipation efficiency is low, a plurality of groups of fan assemblies are usually required to meet the heat dissipation requirements of the plurality of components, and the microwave oven has a complex structure and high manufacturing cost.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a fan base which can radiate a plurality of components at the same time and improve the radiating efficiency.

The invention also provides an air duct assembly comprising the fan base.

The invention also provides a cooking appliance comprising the air duct assembly.

The fan base comprises a base body, wherein the base body is provided with a wind wheel cavity, one end of the base body is provided with a first air duct communicated with the wind wheel cavity, the other end of the base body is provided with a second air duct communicated with the wind wheel cavity, and the second air duct is provided with at least two output ports; and the motor support is arranged in the through hole at the bottom of the wind wheel cavity.

The fan base according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the heat dissipation airflow is output from the wind wheel cavity to the first air channel and the second air channel, the first air channel can dissipate heat of at least one part of the microwave oven, the second air channel is provided with at least two output ports which can dissipate heat of at least two parts of the microwave oven, multi-path output is achieved, a plurality of parts can be dissipated simultaneously, heat dissipation efficiency is improved, the number of fans is reduced, the structure of a cooking appliance is facilitated to be simplified, and manufacturing cost is reduced.

According to some embodiments of the first aspect of the present invention, the housing is provided with a first baffle plate located inside the first air duct, the first baffle plate dividing the first air duct into two channels.

According to some embodiments of the first aspect of the present invention, the seat is provided with a second air guide plate located in the second air duct, the second air guide plate is two and divides the second air duct into three channels.

According to some embodiments of the first aspect of the present invention, the wind wheel cavity is located on one side of the seat body, and the other side of the seat body is provided with a mounting cavity, and the mounting cavity is communicated with at least one of the output ports.

The air duct assembly comprises a fan seat, wherein the fan seat is provided with a seat body, one side of the seat body is provided with an air wheel cavity, one end of the seat body is provided with a first air duct communicated with the air wheel cavity, the other end of the seat body is provided with a second air duct communicated with the air wheel cavity, the second air duct is provided with at least two output ports, the other side of the seat body is provided with an installation cavity, the installation cavity is communicated with at least one output port, the bottom of the air wheel cavity is provided with a through hole, and a motor support is arranged in the through hole; the wind wheel cavity is internally provided with a wind wheel, and the wind wheel is connected with a motor fixed on the motor bracket.

The air duct assembly according to the embodiment of the second aspect of the invention has at least the following advantages: the motor drive wind wheel is rotatory in order to produce the heat dissipation air current, the heat dissipation air current is exported from first wind channel and second wind channel, the heat dissipation air current of first wind channel output can dispel the heat to at least one part of microwave oven, and the second wind channel has at least two delivery outlets and can dispel the heat to two at least parts of microwave oven, part heat dissipation air current gets into the installation cavity and dispels the heat in order to the part in the installation cavity, can dispel the heat to a plurality of parts simultaneously, the heat dissipation efficiency is improved, the number of fans is reduced, help simplifying cooking utensil's structure, and the manufacturing cost is reduced.

According to some embodiments of the second aspect of the present invention, the base is provided with two second air deflectors located in the second air duct, the two second air deflectors divide the second air duct into a first air guiding channel, a second air guiding channel and a third air guiding channel, the fan base is connected with a first air guiding cover and a third air guiding cover, the first air guiding channel is communicated with the first air guiding cover, the second air guiding channel is communicated with the installation cavity, and the third air guiding channel is communicated with the third air guiding cover.

According to some embodiments of the second aspect of the present invention, the fan base is connected to a second wind scooper, and a notch communicated with the second wind scooper is disposed on a side wall of the mounting cavity.

According to some embodiments of the second aspect of the present invention, a fourth wind scooper is connected to the fan base, the fourth wind scooper communicates with the first air duct, and an inverter installation position is disposed inside the fourth wind scooper.

The cooking appliance according to the third aspect of the present invention includes the air duct assembly according to the second aspect of the present invention, and has all technical effects of the air duct assembly, which are not described again.

According to some embodiments of the third aspect of the present invention, the cooking appliance further comprises a bottom plate covering the air duct assembly, the bottom plate being provided with a plurality of air inlet holes.

Additional aspects and advantages 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 the invention.

Drawings

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 first schematic structural diagram of a fan base according to an embodiment of the first aspect of the present invention;

fig. 2 is a second schematic structural diagram of a fan base according to an embodiment of the first aspect of the present invention;

FIG. 3 is a schematic structural diagram of a fan assembly according to a second embodiment of the present invention

FIG. 4 is a schematic structural view of an air duct assembly according to an embodiment of the second aspect of the present invention;

FIG. 5 is a first exploded view of a first duct assembly according to an embodiment of the second aspect of the present invention;

FIG. 6 is a second exploded view of the air duct assembly in accordance with an embodiment of the second aspect of the present invention;

fig. 7 is an exploded schematic view of a cooking appliance according to an embodiment of the third aspect of the present invention;

FIG. 8 is a partially exploded view of the cooking appliance of FIG. 7;

FIG. 9 is a second partially exploded view of the cooking appliance of FIG. 7;

FIG. 10 is a schematic view of the connection between the fourth wind scooper and the magnetron in the third embodiment of the present invention;

fig. 11 is an exploded view of the fourth wind scooper and the magnetron of fig. 10.

The reference numbers are as follows:

the magnetron 101, the inverter component 102, the transformer 1021, the heat sink 1022, the power board component 103, the filter component 104, the hot air component 105, the infrared sensor component 106, the bottom plate 110, the air inlet 111 and the back plate 120;

a cavity 200;

the fan assembly 300, the fan base 310, the mounting cavity 311, the notch 3111, the wind wheel cavity 312, the motor support 313, the through hole 314, the first air duct 315, the second air duct 316, the output port 3161, the first air guide channel 3162, the second air guide channel 3163, the third air guide channel 3164, the first guide plate 317, the second guide plate 318, the wind wheel 320 and the motor 330;

the air guide system comprises a first air guide cover 410, an air guide plate 4101, a second air guide cover 420, a third air guide cover 430, a fourth air guide cover 440, an auxiliary guide plate 4401 and a guide plate 4402.

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 or similar 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 illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

At present, the types of cooking appliances used in a kitchen are rich, wherein the use of a microwave oven and a micro steaming and baking integrated machine with the function of the microwave oven and other cooking appliances is more and more extensive, and the microwave oven is a modern cooking appliance for heating food by utilizing microwaves. The microwave oven consists of power supply, magnetron, control circuit, cooking cavity and other parts. The power supply provides about 4000 volts of high voltage to the magnetron, which, under the excitation of the power supply, continuously generates microwaves, which are coupled into the cooking chamber through the waveguide system. A rotatable stirrer is arranged at the inlet of the cooking cavity, and the stirrer is made of fan-shaped metal and reflects microwaves in all directions after rotating, so that microwave energy can be uniformly dispersed into the cooking cavity, and food can be heated.

Microwave ovens are cooking appliances that heat themselves by absorbing microwave energy in a microwave field. Microwave generated by microwave generator of microwave oven creates microwave electric field in microwave oven cavity, and adopts certain measures to make the microwave electric field be uniformly distributed in the oven cavity as far as possible, and the food can be placed in the microwave electric field, and the control centre can be used for controlling cooking time and microwave electric field intensity so as to implement various cooking processes. The heating principle of the microwave oven is as follows: the microwave generated by the magnetron is an electromagnetic wave, the microwave turns twenty hundred million circles per second, water and other polar molecules are driven by the microwave to rotate at the same speed, and the high frequency rotates and rubs, so that the temperature of the water and other polar molecules is rapidly increased in a short time, and the food is heated.

Among the correlation technique, microwave oven has a plurality of components and parts that generate heat such as magnetron, dc-to-ac converter subassembly, power supply module, filter subassembly, adopts the forced air cooling dispersion to dispel the heat usually, because fan assembly can only dispel the heat to single components and parts, the radiating efficiency is low, in order to satisfy the heat dissipation demand, microwave oven need set up a plurality of fan assembly, the structure that leads to microwave oven is complicated, bulky, be unfavorable for microwave oven's miniaturization, also be favorable to arranging intelligent subassembly, manufacturing cost is high, await the improvement.

The present invention provides a cooking appliance for solving the above problems, and the cooking appliance is described by taking a micro steaming and baking integrated machine as an example.

Referring to fig. 6, an embodiment of the invention provides a micro-steaming and baking all-in-one machine, which includes a housing and a cavity 200 inside the housing, the housing includes a bottom plate 110 and a back plate 120, a cooking cavity for placing food materials is formed inside the cavity 200, an inner wall cavity is defined between the housing and the cavity 200, and components of the micro-steaming and baking all-in-one machine are arranged in the inner wall cavity.

As shown in fig. 8, it can be understood that the components of the micro-steaming and baking integrated machine include a magnetron 101, an inverter assembly 102, a power board assembly 103, a filter assembly 104, a hot air assembly 105, an infrared sensor assembly 106, a fan assembly 300, and the like, the magnetron 101, the inverter assembly 102, the power board assembly 103, and the fan assembly 300 are disposed on the bottom surface of the cavity 200, the hot air assembly 105 is disposed on the back surface of the cavity 200 (the front surface where the oven door is located), and the infrared sensor assembly 106 is disposed on the side surface of the cavity 200.

As shown in fig. 8, a fan base 310 of the fan assembly 300 is provided with a mounting cavity 311, the filter assembly 104 is mounted in the mounting cavity 311, the base plate 110 covers the magnetron 101, the inverter assembly 102, the power board assembly 103 and the fan assembly 300, a plurality of air inlet holes 111 are formed in the base plate 110 for supplying air, a plurality of air inlet holes 111 are also formed in the back plate 120, when the fan assembly 300 operates, air outside the micro-steaming and baking integrated machine is sucked from the plurality of air inlet holes 111, the distribution positions of the air inlet holes 111 on the base plate 110 correspond to the positions of the magnetron 101, the inverter assembly 102 and the power board assembly 103, and the sucked air flows through the positions of the magnetron 101, the inverter assembly 102 and the power board assembly 103 to help heat dissipation.

Referring to fig. 1 and 2, it can be understood that the fan base 310 is a base of the fan assembly 300 and is also a structure of the fan assembly 300 connected to the cavity 200, a wind wheel cavity 312 for accommodating the wind wheel 320 is provided at one side of the fan base 310, a motor bracket 313 for mounting the motor 330 is provided at a bottom of the wind wheel cavity, a through hole 314 is provided at a bottom of the wind wheel cavity 312 for air circulation in consideration of an intake airflow when the wind wheel 320 operates, the motor bracket 313 is in the through hole 314 and does not close the through hole 314, and the wind wheel 320 and the motor 330 are respectively disposed at two sides of the motor bracket 313.

One end of the fan seat 310 is provided with a first air duct 315, the other end of the fan seat 310 is provided with a second air duct 316, the first air duct 315 and the second air duct 316 are both located at the side of the wind wheel cavity 312 and connected with the wind wheel cavity 312, the wind wheel 320 adopts a centrifugal wind wheel, therefore, the first air duct 315 and the second air duct 316 are at least partially arranged along the tangent line of the wind wheel cavity 312, the heat dissipation air flow output by the wind wheel 320 is matched, the flow resistance is reduced, the flow speed is favorably improved, and the heat dissipation is accelerated. The second air duct 316 is provided with two or more output ports 3161 to dissipate heat of a plurality of components.

Wind wheel 320 drives the air current and exports to first wind channel 315 and second wind channel 316 from wind wheel chamber 312, the heat dissipation air current of first wind channel 315 output can evaporate roast all-in-one a little at least one components and parts heat dissipation, and second wind channel 316 can evaporate roast all-in-one a little at least two components and parts heat dissipation through two at least delivery outlets 3161, possess the multiplexed output, can dispel the heat to a plurality of components and parts simultaneously, the radiating efficiency is improved, help simplifying the structure of evaporating roast all-in-one a little, the assembly of being convenient for, and the manufacturing cost is reduced.

It is understood that the mounting cavity 311 is located at a side where the motor 330 is located, a partition is provided between the mounting cavity 311 and the second air duct 316, the two are communicated through one or more output ports 3161, and the heat dissipation air flows through the output port 3161 into the mounting cavity 311 to dissipate heat of the filter assembly 104 in the mounting cavity 311.

Referring to fig. 4, it can be understood that the outlet of the first air duct 315 is connected to the fourth air guiding cover 440, as shown in fig. 8, the inverter assembly 102 is installed inside the fourth air guiding cover 440, and the heat dissipating air flow flows through the fourth air guiding cover 440 to dissipate the heat of the inverter assembly 102. As shown in fig. 10, the outlet of the fourth wind scooper 440 is connected to the magnetron 101, and the output heat dissipation airflow is used to dissipate heat of the magnetron 101, so as to reduce the temperature of the magnetron 101 and ensure stable operation of the magnetron 101.

Referring to fig. 10 and 11, it can be understood that the inverter assembly 102 has a transformer 1021 and a heat sink 1022, and the heat dissipation airflow output from the first air duct 315 can be divided into two for the transformer 1021 and the heat sink 1022. As shown in fig. 1, the fan base 310 is provided with a first flow guiding plate 317, the first flow guiding plate 317 is located in the first air duct 315 and is arranged along the airflow direction, the first flow guiding plate 317 divides the heat dissipation airflow into two paths, and the two paths of heat dissipation airflow are respectively blown to the transformer 1021 and the heat dissipation fin 1022.

Referring to fig. 10 and 11, correspondingly, the fourth air guiding cover 440 is provided with a mounting location inside to mount the inverter assembly 102, the fourth air guiding cover 440 is further provided with an auxiliary air guiding plate 4401 matching with the first air guiding plate 317, and the auxiliary air guiding plate 4401 is located between the transformer 1021 and the heat dissipation fin 1022 to separate heat dissipation airflow. In addition, because the inner space of the fourth wind scooper 440 is large, the transformer 1021 is located in the middle of the inner space of the fourth wind scooper 440, an inclined guide plate 4402 is arranged at an inlet of the fourth wind scooper 440, and the guide plate 4402 guides the heat dissipation airflow to the transformer 1021, so that the heat dissipation effect is improved.

As shown in fig. 10, the magnetron 101 substantially covers the outlet of the fourth wind scoops 440, and the heat dissipating air flows entirely through the inside of the magnetron 101 to take away the heat of the magnetron 101.

Referring to fig. 1, it can be understood that the fan base 310 is further provided with two second air deflectors 318, the two second air deflectors 318 are arranged in the second air duct 316 to divide the second air duct 316 into a first air guiding channel 3162, a second air guiding channel 3163 and a third air guiding channel 3164, and the number of corresponding output ports 3161 is three.

Referring to fig. 6 and 9, the first air guiding channel 3162 is connected to the first air guiding cover 410, the infrared sensor assembly 106 is mounted on the first air guiding cover 410, the first air guiding channel 3162 and the first air guiding cover 410 guide the heat dissipating air flow to the infrared sensor assembly 106 for heat dissipation, and an air guiding plate 4101 is arranged in the first air guiding cover 410 to limit the heat dissipating air flow and accurately guide the heat dissipating air flow to the infrared sensor assembly 106; the second wind guide channel 3163 is communicated with the mounting cavity 311 through an output port 3161, and introduces the heat dissipation airflow into the mounting cavity 311 to dissipate heat of the filter assembly 104 in the mounting cavity 311; the third wind guiding channel 3164 is connected to the third wind guiding cover 430, the third wind guiding cover 430 is connected to the hot wind assembly 105, the third wind guiding cover 430 is attached to the cavity 200, and guides part of the airflow to the hot wind assembly 105, it can be understood that the function of the hot wind assembly 105 is to prepare hot wind to bake the food materials in the cooking cavity.

Referring to fig. 5 and 8, the fan base 310 is connected to the second air guiding cover 420, a notch 3111 communicated with the second air guiding cover 420 is formed in a side wall of the mounting cavity 311, the power board assembly 103 is mounted inside the second air guiding cover 420, the heat dissipation airflow flowing through the mounting cavity 311 enters the second air guiding cover 420 to dissipate heat of the power board assembly 103, the second air guiding cover 420 completely wraps the power board assembly 103, and an air outlet is formed in one side of the second air guiding cover 420, which is away from the third air guiding channel 3164, so that the heat dissipation airflow can be discharged. Still be equipped with thermovent 3112 on the lateral wall of installation cavity 311, thermovent 3112 and breach 3111 are arranged relatively, and motor 330 drive wind wheel 320 rotates, inhales the air from thermovent 3112, can carry out the heat dissipation to filtering component 104 for the first time.

Referring to fig. 4, a second aspect of the present invention provides an air duct assembly, including a fan base 310, a first air guiding cover 410, a second air guiding cover 420, a third air guiding cover 430, and a fourth air guiding cover 440, where the fan base 310 has a wind wheel cavity 312, a first air duct 315, and a second air duct 316, a wind wheel 320 is disposed in the wind wheel cavity 312, the wind wheel 320 is connected to a motor 330, the first air duct 315 and the second air duct 316 are both located at a side of the wind wheel cavity 312 and connected to the wind wheel cavity 312, the wind wheel 320 employs a centrifugal wind wheel, and the first air duct 315 and the second air duct 316 are at least partially arranged along a tangent line of the wind wheel cavity 312.

As shown in fig. 8 and 10, the outlet of the first air duct 315 is connected to the fourth air guiding cover 440, and the inverter assembly 102 can be installed inside the fourth air guiding cover 440, and the heat dissipation air flow flows through the fourth air guiding cover 440 to dissipate heat of the inverter assembly 102. The outlet of the fourth wind scooper 440 may also dissipate heat of another component, such as the magnetron 101, and the output heat dissipation airflow is used to dissipate heat of the magnetron 101, so as to reduce the temperature of the magnetron 101.

The fan base 310 further has two second air deflectors 318 disposed in the second air duct 316, where the two second air deflectors 318 divide the second air duct 316 into a first air guiding channel 3162, a second air guiding channel 3163, and a third air guiding channel 3164, and the number of corresponding output ports 3161 is three.

Referring to fig. 6 and 9, the first air guiding channel 3162 is connected to the first air guiding cover 410, the infrared sensor assembly 106 is mounted on the first air guiding cover 410, the first air guiding channel 3162 and the first air guiding cover 410 guide the heat dissipating air flow to the infrared sensor assembly 106 for heat dissipation, and an air guiding plate 4101 is arranged in the first air guiding cover 410 to limit the heat dissipating air flow and accurately guide the heat dissipating air flow to the infrared sensor assembly 106; the second wind guide channel 3163 is communicated with the mounting cavity 311, and introduces the heat dissipation airflow into the mounting cavity 311 to dissipate heat of the filter assembly 104 in the mounting cavity 311; the third wind guiding channel 3164 is connected to the third wind guiding cover 430, the third wind guiding cover 430 is connected to the hot wind assembly 105, the third wind guiding cover 430 is attached to the cavity 200, and guides part of the airflow to the hot wind assembly 105, it can be understood that the function of the hot wind assembly 105 is to prepare hot wind to heat food materials in the cooking cavity.

Referring to fig. 5 and 8, the fan base 310 is connected to the second air guiding cover 420, a notch 3111 communicating with the second air guiding cover 420 is formed in a side wall of the mounting cavity 311, the power board assembly 103 is mounted inside the second air guiding cover 420, the heat dissipation airflow flowing through the mounting cavity 311 enters the second air guiding cover 420 to dissipate heat of the power board assembly 103, the second air guiding cover 420 completely wraps the power board assembly 103, and an air outlet is formed in a side of the second air guiding cover 420 away from the third air guiding channel 3164 to allow the heat dissipation airflow to be discharged.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.