Cooking electric appliance exhaust system and cooking device

Abstract

The utility model relates to the technical field of cooking electric appliances, and provides a cooking electric appliance exhaust system and a cooking device.The cooking electric appliance exhaust system comprises a heat insulation plate used for installing a gas guide cover; the air guide cover comprises a fan blade air guide part and an exhaust port air guide part which are communicated with each other, and an airflow channel is formed among the fan blade air guide part, the exhaust port air guide part and the heat insulation plate; and the fan assembly comprises a cooling motor and fan blades, the cooling motor is installed on the outer side of the air inlet of the fan blade air guide part through a fixing support, and the fan blades are located in the fan blade air guide part below the fixing support and can be driven by the cooling motor. According to the exhaust system of the cooking electric appliance, the exhaust efficiency and the heat dissipation performance are remarkably improved, smooth airflow is ensured, noise is reduced, and more efficient, safer, more comfortable and more reliable cooking experience is provided for a user.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliance technology, and in particular to a cooking appliance exhaust system and cooking device. Background Technology

[0002] Cooking appliances are indispensable equipment in modern kitchens, and their performance and structural design directly affect the user's cooking experience and the product's lifespan. Among these, the exhaust system, as a core component of cooking appliances, plays a crucial role in heat dissipation, safety, and overall appearance. However, existing cooking appliance exhaust systems have the following shortcomings:

[0003] First: Most cooking appliances on the market use a traditional installation method for their exhaust system, with the cooling motor installed inside the air duct. This installation method not only increases the difficulty of installation and maintenance, but also often results in the motor's position being unfavorable for heat dissipation, causing the motor temperature to rise and affecting the product's lifespan.

[0004] Second: Traditional exhaust ports are usually made of plastic and are directly exposed on the product surface. This not only makes the product look cheap, but the plastic material is also prone to deformation in high-temperature environments, leading to poor exhaust or air leakage, which may even cause safety hazards in severe cases.

[0005] Third: Existing exhaust structures often lack effective fixing measures, which makes the fan components easy to loosen and rotate, affecting the exhaust effect; at the same time, unreasonable design of the shape and size of the exhaust port can also easily lead to insufficient air intake, affecting the heat dissipation effect.

[0006] Fourth: Most existing cooking appliances lack a failure protection mechanism in their exhaust system. If the cooling motor stops or an abnormally high temperature occurs, the power cannot be cut off in time to protect other electronic components of the machine, thereby increasing the failure rate and maintenance costs of the machine.

[0007] Chinese patent CN110301834A discloses a ventilation system for a cooking appliance. This system, through the inclusion of an exhaust assembly, a power supply air intake, and a cold air inlet, achieves mixed cooling and exhaust of hot air from the power supply and cooking fumes from the appliance's cavity. While this patent improves exhaust efficiency and reduces the temperature of the exhaust gas to some extent, it still has several shortcomings, including inconvenient motor heat dissipation and maintenance, a lack of failure protection measures in case of exhaust system malfunctions, and issues with the exhaust port's appearance design. Therefore, it is necessary to improve and optimize the exhaust structure of cooking appliances to enhance product lifespan, safety, and overall appearance. Utility Model Content

[0008] In view of this, the present invention proposes a cooking appliance exhaust system and cooking device, aiming to solve the technical problems existing in the exhaust system of cooking appliances, such as poor airflow guidance, unstable fan assembly, complex structure and inconvenient installation of exhaust port decorative panel, and poor heat dissipation effect of the overall system.

[0009] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0010] A cooking appliance exhaust system, comprising:

[0011] Heat insulation panels are used to install the air duct cover;

[0012] An air guide cover includes a fan blade air guide section and an exhaust port air guide section that are interconnected, and an airflow channel is formed between the fan blade air guide section, the exhaust port air guide section and the heat insulation plate;

[0013] The fan assembly includes a cooling motor and fan blades. The cooling motor is mounted on the outside of the air inlet of the fan blade air guide section via a fixed bracket. The fan blades are located inside the fan blade air guide section below the fixed bracket and can be driven by the cooling motor.

[0014] Furthermore, multiple first buckles are provided at the location of the air inlet on the air guide cover. The multiple first buckles are arranged concentrically around the air inlet and are used to secure the fixing bracket of the fan assembly.

[0015] Furthermore, a first limiting post is provided at the position of the air inlet on the air guide cover, and a first limiting groove is provided on the first flange of the fixed bracket. The first limiting post and the first limiting groove cooperate to limit and prevent the fan assembly from loosening and rotating.

[0016] Furthermore, a decorative panel mounting part is provided on the side of the exhaust port air guide part away from the fan blade air guide part, and a main exhaust port is provided on the decorative panel mounting part. The decorative panel mounting part is used to install the exhaust port decorative panel, and an air outlet corresponding to the main exhaust port is provided on the exhaust port decorative panel.

[0017] Furthermore, the exhaust port decorative panel includes a first connecting plate, a second connecting plate, and an exterior panel. The exterior panel is disposed between the first connecting plate and the second connecting plate and forms a U-shaped structure. Several air outlets are provided on the exterior panel, and the air outlets are corresponding to the main exhaust port. The exhaust port decorative panel is an integrally formed metal exhaust port decorative panel.

[0018] Furthermore, a spiral exhaust guide groove is formed inside the fan blade air guide section to spirally guide the airflow from the air inlet to the exhaust outlet air guide section under the action of the fan blade.

[0019] Furthermore, a first fixing seat is provided on the air guide cover near the air inlet to support and fix the temperature controller.

[0020] Furthermore, a secondary exhaust port is also provided on the exhaust port guide section. The secondary exhaust port is connected to the upper air guide cover and is used to discharge the high-temperature gas for cooling and heat dissipation of the magnetron and frequency converter through the main exhaust port. The main exhaust port that the secondary exhaust port guides the airflow out of is separated from the main exhaust port that the fan blade guide section guides the airflow out of by a spacer protective rib. The spacer protective rib is provided on the air guide cover.

[0021] A first connecting stud is provided on the side of the air guide cover near the main exhaust port for connecting and fixing the computer board.

[0022] Compared with the prior art, the cooking appliance exhaust system and cooking device of this utility model have the following advantages:

[0023] (1) The exhaust system of the cooking appliance described in this utility model ensures smooth airflow and stability of the fan components by cleverly arranging and optimizing the fixing structure, thereby reducing noise and wear. At the same time, the design of the spiral exhaust guide groove makes the airflow more orderly, improves exhaust efficiency, and provides users with a quiet and comfortable operating environment.

[0024] (2) The exhaust system of the cooking appliance described in this utility model significantly improves the overall performance and appearance of the exhaust system by adding a metal exhaust port decorative plate as the air outlet appearance structure of the exhaust system, ensuring the stability and durability of the exhaust system, and realizing the microwave shielding function on the basis of achieving a more high-end appearance of the product.

[0025] Another objective of this invention is to provide a cooking device, including the cooking appliance exhaust system as described above, wherein the exhaust port decorative panel of the cooking appliance exhaust system is disposed between the panel assembly and the door assembly.

[0026] The advantages of the cooking device and the exhaust system of the aforementioned cooking appliances compared to the prior art are the same, and will not be repeated here. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is a side view of the exhaust system of the cooking appliance described in an embodiment of the present invention.

[0029] Figure 2This is a side view of the exhaust system of the cooking appliance described in this embodiment of the present invention from a second perspective.

[0030] Figure 3 This is an exploded structural diagram of the exhaust system of the cooking appliance described in this embodiment of the present invention;

[0031] Figure 4 This is a first cross-sectional view of the exhaust system of the cooking appliance described in this embodiment of the present invention;

[0032] Figure 5 This is a second cross-sectional view of the exhaust system of the cooking appliance described in this embodiment of the present invention;

[0033] Figure 6 This is a bottom view of the air guide cover and upper air guide cover of the present utility model embodiment for air guiding.

[0034] Figure 7 This is an exploded structural diagram of the cooling motor, fixed bracket, and fan blade assembly structure described in an embodiment of this utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the cooking device described in an embodiment of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Cooking apparatus; 1. Heat insulation plate; 2. Exhaust vent decorative plate; 201. First connecting plate; 202. Second connecting plate; 203. Exterior panel; 204. Air outlet; 3. Air guide cover; 301. Fan blade air guide part; 302. Exhaust vent air guide part; 303. Decorative plate mounting part; 4. Cooling motor; 5. Computer board; 6. Upper air guide cover; 7. Thermostat; 8. Fixing bracket; 801. Bracket body; 802. First limiting groove; 80 3. First flange; 804. Cross rib; 805. Clearance opening; 9. Fan blade; 10. Air inlet; 11. First buckle; 12. First limiting post; 13. First fixing seat; 14. Air inlet connector; 15. First connecting stud; 16. Glue groove; 17. Notch; 18. Second connecting stud; 19. Spiral exhaust guide groove; 20. Main exhaust port; 21. Spacing protective rib; 22. Secondary exhaust port; 23. Panel assembly; 24. Door assembly. Detailed Implementation

[0038] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0039] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] like Figures 1-8 As shown, this application discloses a cooking appliance exhaust system, comprising:

[0043] Insulation board 1,

[0044] The air guide cover 3 is installed on the heat insulation plate 1 and includes a fan blade air guide part 301 and an exhaust port air guide part 302 that are connected to each other.

[0045] The fan assembly includes a cooling motor 4 and a fan blade 9. The cooling motor 4 is mounted on the outside of the air inlet 10 of the fan blade air guide 301 via a fixed bracket 8. The fan blade 9 is located inside the fan blade air guide 301 below the fixed bracket 8 and can be driven by the cooling motor 4.

[0046] This application discloses a cooking appliance exhaust system, including a heat insulation plate 1, an air guide cover 3, and a fan assembly. The fan assembly includes a cooling motor 4 and fan blades 9 that can be driven by it. The air guide cover 3 includes a fan blade air guide section 301 and an exhaust port air guide section 302 that are interconnected, forming an airflow channel. An air inlet 10 is provided on the side of the fan blade air guide section 301 away from the heat insulation plate 1. Multiple first buckles 11 are provided on the air guide cover 3 at the location of the air inlet 10, arranged concentrically around the air inlet 10, for engaging and fixing a fixing bracket 8 of the fan assembly. Preferably, the first buckles 11 are L-shaped buckles. The fixing bracket 8 includes a bracket plate 801, with a clearance opening 805 corresponding to the air inlet 10 at the center of the bracket plate 801. A cross-shaped pressure rib 804 is provided, with both ends of the cross-shaped pressure rib 804 integrally formed or fixedly connected to the support plate 801. A first flange 803 is provided on the outer circumference of the support plate 801. Multiple first buckles 11 are snapped onto the first flange 803 and tightened to ensure strength, prevent deformation during installation, and prevent loosening under vibration. The cooling motor 4 is mounted upside down on the fixed bracket 8 and positioned above the air inlet 10. The cooling motor 4 passes through the central hole of the cross-shaped pressure rib 804 and is connected to the fan blade 9 for transmission. The fan blade 9 is located in the fan blade air guide section 301 below the air inlet 10. When the cooling motor 4 is started, it drives the fan blade 9 to rotate, drawing in external air and discharging it through the fan blade air guide section 301 to the exhaust port air guide section 302, and finally discharging it through the exhaust port of the exhaust port air guide section 302, thus achieving effective heat dissipation and exhaust of the cooking appliance.

[0047] The exhaust system for cooking appliances described in this application has the cooling motor 4 installed upside down and positioned above the air inlet 10. This layout not only avoids the influence of the cooling motor 4 on the air intake volume, but also keeps the cooling motor 4 in a relatively low temperature environment, effectively reducing the temperature rise of the motor and extending its service life. At the same time, the tight fit between the clips and the flange simplifies the assembly process, making the installation and maintenance of the fan assembly more convenient, ensuring that the fan assembly will not loosen under vibration, and reducing the difficulty of operation and time costs.

[0048] As a preferred example of this application, a first limiting post 12 is provided at the position of the air inlet 10 on the air guide cover 3. Correspondingly, a first limiting groove 802 is provided on the first flange 803 of the fixed bracket 8. The first limiting post 12 and the first limiting groove 802 cooperate to limit and prevent the fan assembly from loosening and rotating. Preferably, the first limiting groove 802 is arc-shaped. In the example of this application, the cross rib 804 provided at the clearance opening 805 on the fixed bracket 8 cooperates with the first flange 803, resulting in extremely high overall strength and firm installation. The cross rib 804 and the clearance opening 805 form a four-quadrant opening to ensure the air intake of the duct. At the same time, when the fan assembly is installed, the first limiting post 12 is precisely inserted into the first limiting groove 802, effectively preventing the fan assembly from loosening or rotating due to vibration or external force during use, reducing noise and wear caused by vibration, and extending service life.

[0049] As a preferred example of this application, a notch 17 is provided at the location of the air inlet 10 on the air guide cover 3, and the notch 17 is located below the snap head of the first snap 11. Preferably, multiple notches 17 are provided and are in the shape of square gears. By positioning them below the snap position, it is convenient to demold smoothly without the need for a slanted ejector during mold manufacturing, which simplifies the mold structure and improves the convenience and reliability of manufacturing. At the same time, the square gear-shaped notch 17 of the air inlet 10 is not only aesthetically pleasing, but also enhances the structural strength of the air inlet 10 and optimizes the airflow path.

[0050] As a preferred example of this application, a decorative panel mounting portion 303 is provided on the side of the exhaust port air guide portion 302 away from the fan blade air guide portion 301. A main exhaust port 20 is provided on the decorative panel mounting portion 303. The decorative panel mounting portion 303 is used to install the exhaust port decorative panel 2. An air outlet 204 corresponding to the main exhaust port 20 is provided on the exhaust port decorative panel 2. In this example of the application, the exhaust port decorative panel 2 includes a first connecting plate 201, a second connecting plate 202, and an outer panel 203. The outer panel 203 is disposed between the first connecting plate 201 and the second connecting plate 202 and forms a U-shaped structure. A plurality of air outlets 204 are provided on the outer panel 203. The air outlets 204 are correspondingly provided to the main exhaust port 20. The exhaust port decorative panel 2 is an integrally formed metal exhaust port decorative panel. In this example of the application, the air outlet 204 is a waist-shaped flanged exhaust hole, which has high component strength and ensures that the plastic air guide cover 3 does not bend or deform. By adopting a metal exhaust vent decorative panel 2, the overall performance and appearance of the exhaust system are significantly improved. The high strength of the metal exhaust vent decorative panel effectively prevents bending and deformation caused by excessively long plastic air guide covers, ensuring the stability and durability of the exhaust system. In addition, the introduction of metal not only gives the product a more upscale appearance but also provides microwave shielding, which is unmatched by plastic materials. In applications such as microwave ovens, the metal exhaust vent decorative panel can effectively block abnormal microwave leakage from the door, avoiding interference with the computer board, thereby reducing machine malfunctions caused by microwave leakage and improving the safety and reliability of the product.

[0051] As a preferred example of this application, a spiral exhaust guide groove 19 is formed inside the fan blade guide section 301 to spirally guide the airflow from the air inlet 10 to the exhaust outlet guide section 302 under the action of the fan blades 9. When the air inlet 10 draws in airflow, the fan blades 9 not only provide power to the airflow but also guide the airflow along the path of the spiral exhaust guide groove 19 through their unique shape and arrangement. In this process, the airflow is effectively organized and accelerated, forming a spiral airflow pattern, and is finally smoothly guided to the exhaust outlet guide section 302. This design ensures that the airflow path within the guide section is both efficient and orderly, enabling the airflow to reach the predetermined position faster and more accurately, reducing energy loss and noise generation during the airflow guidance process, and providing users with a quieter and more comfortable operating environment.

[0052] As a preferred example of this application, a first fixing seat 13 is provided next to the air inlet 10 on the air guide cover 3 to support and fix the thermostat 7. By setting a thermostat monitoring point next to the air inlet 10 of the air guide cover 3 and fixing the thermostat 7 with a raised cylindrical fixing method, the fluid in the air duct is smoother, avoiding the influence of airflow turbulence on the monitoring effect of the thermostat. The thermostat 7 is stably installed on the air guide cover 3 by the first fixing seat 13, and the air inlet connector 14 is the input port for introducing high-temperature steam or hot air into the spiral exhaust duct 19. During operation, the monitoring port of the thermostat 7 is located at the inlet front of the air inlet connector 14. The water vapor and high-temperature hot air discharged during the operation of the electrical components will not affect the reliability of the thermostat 7, preventing rust and corrosion and ensuring its service life, thus ensuring the accuracy and timeliness of monitoring. By setting a preset threshold, such as setting the monitoring temperature to 85 degrees, when the temperature reaches the preset threshold of 85 degrees, if the motor stops due to a fault, causing the steam to rapidly increase the temperature around the air inlet, the thermostat 7 will respond quickly, cut off the main circuit, and stop the machine from working. This prevents abnormal temperature rise caused by motor failure, thereby effectively protecting other electronic components of the machine and ensuring user safety and stable machine operation.

[0053] As a preferred example of this application, the exhaust port guide section 302 is further provided with a secondary exhaust port 22, which is connected to the upper guide cover 6 and is used to discharge the high-temperature gas for cooling and heat dissipation of the magnetron and frequency converter through the main exhaust port 20.

[0054] By adding a secondary exhaust port 22 to the exhaust port guide section 302, the exhaust structure becomes a dual exhaust system. Under normal operating conditions, the high-temperature steam and hot air generated in the cooking cavity are smoothly discharged through the main exhaust port 20 corresponding to the fan blade guide section 301, while the high-temperature gas generated by the cooling and heat dissipation of components such as the magnetron and inverter board is discharged outward through the upper guide cover, the secondary exhaust port 22, and then through the main exhaust port 20 connected to the secondary exhaust port 22. This clearly defined dual exhaust design ensures that high-temperature gases from different sources can each follow their own path, avoiding mixing and mutual interference, and improving exhaust efficiency and heat dissipation.

[0055] Preferably, the main exhaust port 20, from which the secondary exhaust port 22 guides the airflow, is separated from the main exhaust port 20, from which the fan blade air guide 301 guides the airflow, by a spacer rib 21, which is installed on the air guide cover 3. This arrangement mainly takes into account special circumstances such as abnormal machine stoppage or forced power failure. By setting a protective rib between the secondary exhaust port and the main exhaust port, an effective physical barrier is formed, reducing safety hazards such as short circuits caused by water vapor backflow, and improving the overall safety and reliability of the machine.

[0056] As a preferred example of this application, an adhesive groove 16 is provided on the edge of the air guide cover 3 for adhesive sealing between the air guide cover 3 and the heat insulation plate 1. Preferably, the adhesive groove 16 is a U-shaped groove, located around the edge of the air guide cover 3. In actual operation, by filling the adhesive groove 16 with an appropriate amount of glue, the air guide cover 3 and the heat insulation plate 1 can be tightly connected, thereby forming a sealed air duct structure. This sealing method is not only simple and easy to implement, but also highly effective, ensuring that the airflow inside the air duct is not disturbed by the outside world, while preventing moisture from leaking out from the gaps, thus ensuring the normal operation of the cooking equipment and the stability of the internal environment.

[0057] As a preferred example of this application, the edge of the air guide cover 3 is provided with second connecting studs 18 for screw-locking and fixing with the heat insulation plate 1. This arrangement achieves a fixed connection between the two by introducing second connecting studs 18 along the edge of the air guide cover 3, which match the corresponding holes on the heat insulation plate 1 and are locked with screws. A U-shaped adhesive groove 16 is also designed around the edge of the air guide cover 3 for filling with adhesive to form a sealing layer. During installation, adhesive is first injected into the U-shaped adhesive groove 16, and then the air guide cover 3 is locked to the heat insulation plate 1 with screws. After the adhesive is applied, there is no need to wait for the silicone to cure before use, thus shortening the production cycle and improving production efficiency. Furthermore, the dual fixing of screws and adhesive enhances the durability and reliability of the product, enabling the cooking equipment to maintain a stable working state during long-term use.

[0058] As a preferred example of this application, a first connecting stud 15 is provided on the side of the air guide cover 3 near the main exhaust port 20 for connecting and fixing the computer board 5. With this design, the computer board 5 can be directly installed in the upper middle position of the air guide cover 3 without the need for an additional computer board bracket. During installation, simply align the computer board 5 with the first connecting stud 15 on the air guide cover 3 and tighten it with screws, achieving a stable connection between the computer board 5 and the air guide cover 3.

[0059] This design reduces the overall cost of the product and improves its cost-effectiveness. Simultaneously, the placement of the computer board 5 next to the main exhaust port 20 allows for better heat dissipation of electronic components during operation, resulting in lower temperature rise and extending their lifespan, thus improving product reliability. Furthermore, the design of the first connecting stud 15 on the air guide cover 3 ensures compatibility with computer boards of various sizes, enhancing the product's flexibility and applicability.

[0060] This application also discloses a cooking device 100, including a cooking appliance exhaust system as described in the above embodiments, wherein the exhaust port decorative panel 2 of the cooking appliance exhaust system is disposed between the panel assembly 23 and the door assembly 24.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooking appliance exhaust system, characterized in that, include: Heat insulation plate (1) is used to install air guide cover (3); The air guide cover (3) includes a fan blade air guide part (301) and an exhaust port air guide part (302) that are interconnected. An airflow channel is formed between the fan blade air guide part (301), the exhaust port air guide part (302) and the heat insulation plate (1). The fan assembly includes a cooling motor (4) and a fan blade (9). The cooling motor (4) is mounted on the outside of the air inlet (10) of the fan blade air guide (301) via a fixed bracket (8). The fan blade (9) is located inside the fan blade air guide (301) below the fixed bracket (8) and can be driven by the cooling motor (4).

2. The exhaust system for cooking appliances according to claim 1, characterized in that, Multiple first buckles (11) are provided at the position of the air inlet (10) on the air guide cover (3). The multiple first buckles (11) are arranged concentrically around the air inlet (10) and are used to fasten and fix the fixing bracket (8) of the fan assembly.

3. The exhaust system for cooking appliances according to claim 2, characterized in that, A first limiting post (12) is provided at the position of the air inlet (10) on the air guide cover (3). Correspondingly, a first limiting groove (802) is provided on the first flange (803) of the fixed bracket (8). The first limiting post (12) and the first limiting groove (802) cooperate to limit and prevent the fan assembly from loosening and rotating.

4. The exhaust system for cooking appliances according to claim 3, characterized in that, A decorative panel mounting part (303) is provided on the side of the exhaust port air guide part (302) away from the fan blade air guide part (301). A main exhaust port (20) is provided on the decorative panel mounting part (303). The decorative panel mounting part (303) is used to install the exhaust port decorative panel (2). An air outlet (204) corresponding to the main exhaust port (20) is provided on the exhaust port decorative panel (2).

5. The exhaust system for cooking appliances according to claim 4, characterized in that, The exhaust port decorative panel (2) includes a first connecting plate (201), a second connecting plate (202), and an exterior panel (203). The exterior panel (203) is disposed between the first connecting plate (201) and the second connecting plate (202) and forms a U-shaped structure. Several air outlets (204) are provided on the exterior panel (203). The air outlets (204) are correspondingly disposed with the main exhaust port (20). The exhaust port decorative panel (2) is an integrally formed metal exhaust port decorative panel.

6. The exhaust system for cooking appliances according to claim 1, characterized in that, The fan blade air guide section (301) forms a spiral exhaust guide groove (19) inside, which is used to spirally guide the airflow from the air inlet (10) to the exhaust outlet air guide section (302) under the action of the fan blade (9).

7. The exhaust system for cooking appliances according to claim 1, characterized in that, A first fixing seat (13) is provided on the air guide cover (3) near the air inlet (10) to support and fix the temperature controller (7).

8. The exhaust system for cooking appliances according to claim 4, characterized in that, The exhaust port guide section (302) is also provided with a secondary exhaust port (22), which is connected to the upper air guide cover (6) and is used to discharge the high-temperature gas of the magnetron and frequency converter cooling heat dissipation through the main exhaust port (20). The main exhaust port (20) guided by the secondary exhaust port (22) and the main exhaust port (20) guided by the fan blade guide section (301) are separated by a spacer rib (21), which is provided on the air guide cover (3).

9. The exhaust system for a cooking appliance according to claim 4, characterized in that, A first connecting stud (15) is provided on the side of the air guide cover (3) near the main exhaust port (20) for connecting and fixing the computer board (5).

10. A cooking apparatus, characterized in that, The cooking appliance exhaust system as described in any one of claims 1 to 9 is provided with an exhaust port decorative panel (2) disposed between the panel assembly (23) and the door assembly (24).

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