CN215305137U - Cooking appliance door body assembly and cooking appliance - Google Patents

Abstract

The utility model discloses a cooking appliance door body assembly and a cooking appliance, wherein the cooking appliance door body assembly comprises a door frame, and outer glass, middle glass and inner glass which are sequentially fixed on the door frame at intervals, wherein the inner glass faces towards a cavity of the cooking appliance, and the inner glass is fixed with the door frame in a sealing manner; the inner glass can be sealed with the door frame of the cooking appliance to seal the cavity of the cooking appliance, wherein the gap between the outer glass and the middle glass is 1.8-2.5 times that between the middle glass and the inner glass. Interior glass among the cooking appliance door body group spare is that the cooking appliance cavity is airtight with the door frame seal, because glass heat conductivity is relatively poor, can hinder the heat in the cooking appliance cavity excessive, simultaneously, interior glass is sealed fixed with the door frame, further hinders the heat in the cooking appliance cavity excessive to effectively reduce door body group spare and install the temperature and the temperature rise of handle above that.

Description

Cooking appliance door body assembly and cooking appliance

Technical Field

The utility model relates to the field of kitchen appliances, in particular to a cooking appliance door body assembly and a cooking appliance.

Background

At present, the distance between the handle of the existing steaming and baking integrated machine and the outer glass in the domestic market is generally larger than 25mm in order to avoid the requirement of temperature rise of the handle on safety regulations, as shown in figure 1, after the distance A between the handle and the outer glass is larger than or equal to 25mm, the temperature rise of the handle can not be required, and only the temperature rise limit value of the outer glass is required, but the distance limitation can make some design models unable to be used. At present, the distance between the inner surface of the handle and the outer glass is about 40mm, and the handle is basically formed by a single model such as a C shape. The temperature rise value of the outer glass is executed according to the surface temperature rise limit value, the working condition is not the most severe working condition, the temperature rise requirement of the outer glass is low, and when the working condition is the most severe working condition, the temperature rise of the outer glass can not strictly meet the requirement of the temperature rise limit value.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the first purpose of the utility model is to provide a cooking appliance door body assembly, which can realize that the temperature rise of the door body outer glass and a handle is smaller than the temperature rise limit value when the distance between the handle and the outer glass is smaller than 25 mm.

The utility model provides a door body assembly of a cooking appliance, which comprises a door plate frame, and outer glass, middle glass and inner glass which are sequentially fixed on the door plate frame at intervals, wherein the inner glass faces towards a cavity of the cooking appliance, and the inner glass and the door plate frame are fixed in a sealing manner; the inner glass can be sealed with a door frame of the cooking appliance to seal the cavity of the cooking appliance, wherein the gap between the outer glass and the middle glass is 1.8-2.5 times that between the middle glass and the inner glass.

Furthermore, an inner glass fixing groove is formed in one side, close to the cavity, of the door plate frame, a supporting rib used for supporting the middle glass is arranged on the other side of the door plate frame, and the thickness of the supporting rib is 1/3 of the thickness of the door plate frame.

Further, a heat dissipation opening is formed in the edge of the top of the door panel frame between the middle glass and the outer glass; and a cold air inlet is arranged at the bottom of the door panel frame between the middle glass and the outer glass.

Further, a heat radiation reflection film is attached to the side face of the inner glass close to the cavity or/and the side face far away from the cavity.

Furthermore, the cooking appliance door body assembly further comprises a handle fixed on the surface of the outer glass, one side, close to the outer glass, of the handle is provided with a plurality of fixing hole columns, the handle further comprises a separation blade, the separation blade is arranged between the handle and the outer glass, and the edge of the separation blade does not exceed the edge of the handle.

Furthermore, a plurality of supporting ribs are arranged on the blocking piece close to the outer glass side, and a certain distance is reserved between the edges of the supporting ribs and the edges of the blocking piece;

and a gluing groove is formed in the outer side of the handle far away from the outer glass side and is used for adhering a glass plate.

Furthermore, the side, close to the outer glass, corresponding to the glue applying groove is provided with a plurality of heat insulation grooves, and the heat insulation grooves are provided with communication holes communicated with the glue applying groove.

The cooking electric appliance door body assembly has the beneficial effects that:

interior glass among the cooking appliance door body group spare makes the cooking appliance cavity airtight with the door frame is sealed, because glass heat conductivity is relatively poor, can hinder the heat in the cooking appliance cavity excessive, simultaneously, interior glass is sealed fixed with the door frame, further hinders the heat in the cooking appliance cavity excessive to effectively reduce door body group spare and install the temperature and the temperature rise of handle above that.

The second purpose of the utility model is to provide an electric cooking appliance, so as to reduce the temperature rise of the door body assembly and the handle.

The cooking appliance comprises a cooking appliance body and the cooking appliance door body assembly, wherein the inner glass in the cooking appliance door body assembly can be sealed with a door frame of the cooking appliance body, so that a cavity of the cooking appliance is closed.

Further, the cooking appliance further includes: the fan cover plate is arranged at the top or the rear part of the cooking appliance cavity, and the heating component and the circulating fan are arranged in the fan cover plate; the fan cover plate comprises a fixed plate positioned at the edge, a main air plate positioned at the middle part and a transition plate connecting the fixed plate and the main air plate, wherein an air inlet hole is formed in the middle part of the main air plate, air outlet holes are formed in the edge of the main air plate and the transition plate, and the transition plate adjacent to the cooking appliance door body assembly is not provided with the air outlet hole; the circulating fan is used for blowing hot air around the heating component to the outside of the fan cover plate;

and at the position of airflow rotation in the cavity of the cooking appliance, the air outlet hole is not formed in the main air plate.

The cooking electric appliance has the beneficial effects that:

by installing the door body assembly of the cooking appliance, the cooking appliance can achieve the effect which can be achieved by the door body assembly of the cooking appliance, and the temperature rise of the door body assembly and a handle arranged on the door body assembly are effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced and only the oven will be taken as a representative for illustration.

FIG. 1 is a schematic view of a handle structure disposed on a door panel of a cooking appliance in the prior art;

fig. 2 is a schematic cross-sectional view of a cooking appliance according to an embodiment of the present invention;

fig. 3 is a schematic front view of a cooking appliance according to an embodiment of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure A-A of FIG. 3;

FIG. 5 is a schematic front view of the door assembly of FIG. 2 with the handle attached;

FIG. 6 is a left side schematic view of the door body assembly of FIG. 2 with the pull handle installed;

FIG. 7 is a cross-sectional structural view of the door body assembly of FIG. 2 with the pull handle installed;

FIG. 8 is a schematic view of a disassembled structure of the door assembly of FIG. 2;

FIG. 9 is a schematic structural view of the door panel frame of FIG. 7;

FIG. 10 is a schematic view of the pull handle of FIG. 2;

FIG. 11 is a front view of the pull handle of FIG. 2;

FIG. 12 is a schematic view of the cross-sectional structure B-B of FIG. 10;

FIG. 13 is a schematic view of the cross-sectional structure C-C of FIG. 10;

icon:

1-a fan cover plate; 1-a fixed plate; 1-2-transition plate; 1-3-main air plate; 1-3-1-air inlet; 1-4-air outlet;

2-a heat-generating component;

3-circulating fan;

4-door body assembly; 4-1-a door panel frame; 4-1-supporting ribs; 4-1-2-heat dissipation ports; 4-1-3-cold air inlet; 4-2-inner glass; 4-3-medium glass; 4-outer glass; 4-5-cushion pad; 4-6-fixed block; 4-7-gaps;

5, a handle; 5-1-fixed pore column; 5-2-sleeve; 5-3-a baffle plate; 5-4-support ribs; 5-heat insulation groove; 5-5-1-intercommunicating pore; and 5-6-gluing a glue groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 2 to 13, the present embodiment provides a cooking appliance, which includes a cooking appliance body and a cooking appliance door assembly 4, wherein an inner glass 4-2 in the cooking appliance door assembly 4 can be sealed with a door frame of the cooking appliance body, so that a cavity of the cooking appliance is sealed.

Referring to fig. 5-9, the door assembly 4 of the cooking appliance in the embodiment comprises a door frame 4-1, and an outer glass 4-4, a middle glass 4-3 and an inner glass 4-2 which are sequentially fixed on the door frame 4-1 at intervals; the inner glass 4-2 faces the cavity of the cooking appliance, the inner glass 4-2 is fixed with the door frame 4-1 in a sealing mode, and the gap between the outer glass 4-4 and the middle glass 4-3 is 1.8-2.5 times that between the middle glass 4-3 and the inner glass 4-2.

The inner glass 4-2 and the door frame in the door body assembly 4 of the cooking appliance are sealed to seal the cavity of the cooking appliance, the heat in the cavity of the cooking appliance can be prevented from overflowing due to poor heat conduction performance of the glass, and meanwhile, the inner glass 4-2 and the door frame 4-1 are sealed and fixed to further prevent the heat in the cavity of the cooking appliance from overflowing, so that the temperature and the temperature rise of the door body assembly 4 and the handle 5 arranged on the door body assembly 4 are effectively reduced. By setting the relationship between the gap between the outer glass 4-4 and the middle glass 4-3 and the gap between the middle glass 4-3 and the inner glass 4-2, the outer glass 4-4 is far away from the inner glass 4-2 and the middle glass 4-3 with higher relative heat as far as possible, and meanwhile, the overall design size of the cooking appliance needs to be considered, and the gap between the outer glass 4-4 and the middle glass 4-3 is determined to be 1.8-2.5 times of the gap between the middle glass 4-3 and the inner glass 4-2.

In this embodiment, a heat radiation reflecting film is attached to the side surface of the inner glass 4-2 near the cavity.

Through the setting of heat radiation reflection film, can reflect the heat that the hot-air in the cavity transmitted, reduce the heat of transmitting to door body group spare 4 inside through interior glass 4-2.

In the embodiment, one side of the door plate frame 4-1, which is close to the cavity, is provided with an inner glass fixing groove, and the other side of the door plate frame 4-1 is provided with a supporting rib 4-1-1 for supporting the middle glass 4-3.

Specifically, the silicone adhesive can be injected into the inner glass fixing groove, the silicone adhesive plays a role in adhering and fixing the inner glass 4-2 and also plays a role in sealing, so that hot air in the cavity cannot directly permeate into the door body assembly 4 through a gap between the inner glass 4-2 and the door frame 4-1. The supporting ribs 4-1-1 are sequentially connected from top to bottom, from left to right to form a closed loop. The thickness of the supporting rib is preferably 3-4mm, and the supporting rib occupies 1/3 of the thickness of the door frame 4-1, so that the ratio of the distance between the inner glass 4-2 and the middle glass 4-3 to the distance between the outer glass 4-4 and the middle glass 4-3 is 1:2, the close distance between the inner glass 4-2 and the middle glass 4-3 is beneficial to reflecting heat to the inside of the cavity, and the heat transferred to the outer side of the door body can be reduced.

Referring to fig. 6, a gap 4-7 is left between the outer glass 4-4 and the door panel frame 4-1. Preferably, the gap 4-7 is D (designed to be 2 mm) in width and E (designed to be 200 mm) in height, penetrates through the gap from left to right, hot air between the middle glass 4-3 and the outer glass 4-4 can be rapidly diffused out of the gap 4-7, and the temperature of the outer glass 4-4 and the temperature of the handle 5 are reduced.

In this embodiment, the top edge of the door frame 4-1 between the middle glass 4-3 and the outer glass 4-4 is provided with a heat sink 4-1-2.

The middle position of the top of the door frame 4-1 is not provided with the heat dissipation hole 4-1-2, so that steam coming out of a steam outlet of the cooking appliance is prevented from being blown into the door body assembly 4, the lower temperature in the door body assembly 4 is ensured, and the light transmission deviation of the glass caused by the formation of water mist liquid drops between the middle glass 4-3 and the outer glass 4-4 is prevented, thereby influencing the food cooking effect of a user in the cooking process.

Specifically, 4 heat dissipation holes 4-1-2 which are bilaterally symmetrical are formed in the edge of the top of the door panel frame 4-1, the heat dissipation holes 4-1-2 are long holes, the size of each heat dissipation hole is 4mm wide and 50mm long, the heat dissipation holes 4-1-2 can reduce the temperature rise of a handle 5 on the outer glass 4-4 by 15K, and the effect of reducing the temperature rise is obvious.

In this embodiment, a cool air inlet 4-1-3 is provided at the bottom of the door panel frame 4-1 between the middle glass 4-3 and the outer glass 4-4.

Preferably, the number of the cold air inlets 4-1-3 is more than that of the heat dissipation holes 4-1-2, and the cold air can smoothly enter the door body assembly 4 through the cold air inlets 4-1-3 to form convection with the heat dissipation holes 4-1-2 at the top and the gaps 4-7 on the side surfaces, so that the cooling effect of the outer glass 4-4 and the handles 5 installed on the outer glass 4-4 is improved.

Referring to fig. 5-13, the cooking appliance of the embodiment further includes a handle 5, wherein a plurality of fixing hole pillars 5-1 are arranged on one side of the handle 5 close to the outer glass 4-4, a sleeve 5-2 is arranged on the periphery of the fixing hole pillar 5-1, and the fixing hole pillar 5-1 is connected with the sleeve 5-2 through a reinforcing rib.

Referring to fig. 5-13, in the present embodiment, the handle 5 traverses the left and right sides of the door body and is aligned with the left and right sides of the outer glass 4-4, and the shortest distance C between the handle of the handle 5 and the outer glass 4-4 is less than 25mm, in this embodiment, C =16mm is taken, and according to the safety requirements, it is required that the temperature rise at each point of the handle 5 does not exceed the limit value.

Specifically, fixed orifices post 5-1 is the screw post, see fig. 10, set up 4 screw posts in this embodiment, in order to prevent that the user from touching the screw post, because of the inside screw heat conductivity of screw post is good, can be with the heat conduction of the internal portion of door to the screw post, the temperature of screw post can be than higher, touch and to have the scald risk, sleeve 5-2 has been designed in the periphery of screw post, screw post and sleeve 5-2 pass through the strengthening rib and connect, the strengthening rib plays the effect of strengthening sleeve 5-2 intensity, can promote the intensity of screw post simultaneously, beat the skew fracture with the screw post when preventing to beat the screw.

In the embodiment, the handle 5 further comprises a baffle 5-3, the baffle 5-3 is arranged between the handle 5 and the outer glass 4-4, and the edge of the baffle 5-3 does not exceed the edge of the handle 5.

Specifically, the thickness of the baffle 5-3 can be 1mm, and the material of the baffle 5-3 can be plastic. Referring to fig. 13, the distance between the baffle 5-3 and the outer glass 4-4 is F (designed to be 2 mm), and the larger the F value is, the better the heat insulation effect is.

In the design, the influence of the shape is considered, the edge of the baffle 5-3 does not exceed the edge of the handle 5, in the embodiment, the fastening hand of the handle 5 is installed downwards, and the lower edge of the baffle 5-3 does not exceed the lower edge of the lowest point of the handle 5.

In some embodiments of the present application, the gripping tab of the handle 5 may also be mounted facing upwards.

In the application, a plurality of supporting ribs 5-4 are arranged on the blocking piece 5 close to the side of the outer glass 4-4, and a certain distance is reserved between the edge of the supporting rib 5-4 and the edge of the blocking piece 5-3.

When the handle 5 is installed on the outer glass 4-4, the support rib 5-3 is attached to the outer glass 4-4. In this embodiment, the edge of the support rib 5-4 is higher than the edge of the blocking piece 5-3 by a distance H (3 mm in design), and the distance H can ensure that the lower edge of the blocking piece 5-3 does not contact with the outer glass 4-4, thereby effectively preventing the fingers of the user from touching the outer glass 4-4.

In the embodiment, the glue applying grooves 5-6 are formed in the outer sides of the handles 5 far away from the outer glass 4-4, and the glue applying grooves 5-6 are used for adhering glass plates.

Specifically, the glass plate is pasted on the outer side surface of the handle 5 by pasting glue into the glue pasting grooves 5-6, and after the glass plate is pasted, the temperature and the temperature rise of the glass plate on the outer side surface of the handle 5 are lower than those of the handle 5, so that the temperature of the outer surface of the handle 5 is ensured to be lower. The glass plate may cover the entire outer surface of the handle 5, so that the cooling effect of the glass plate is fully exerted, or the glass plate may cover only a part of the outer surface of the handle 5.

In the embodiment, a plurality of heat insulation grooves 5-5 are formed in the side handle 5 close to the outer glass corresponding to the glue applying grooves 5-6, and communication holes 5-7 communicated with the glue applying grooves 5-6 are formed in the heat insulation grooves 5-5.

Because the heat transfer speed of the air is relatively low, the heat insulation groove 5-5 can ensure that the temperature of the upper surface of the handle 5 is not too high, and the safety protection effect is achieved. Referring to fig. 10, the bottom wall of the heat insulation groove 5-5 is provided with communication holes 5-7 communicated with the glue applying groove 5-6, and the adjacent communication holes 5-7 are separated by ribs. The communicating holes 5-7 can prevent glue from overflowing the gluing grooves 5-6 to affect the gluing quality of the glass plate outside the handle 5, and a small amount of redundant glue can flow into the heat insulation grooves 5-5 through the communicating holes 5-7.

The cooking appliance in this embodiment further includes: the fan cover plate 1 is provided with a heating component 2 and a circulating fan 3 inside the fan cover plate 1; the circulating fan 3 is used for blowing hot air around the heating pipe to the outside of the fan cover plate 1;

the fan cover plate 1 comprises a fixed plate 1-1 positioned at the edge, a main air plate 1-3 positioned at the middle part and a transition plate 1-2 connecting the fixed plate 1-1 and the main air plate 1-3, wherein the middle part of the main air plate 1-3 is provided with an air inlet 1-3-1, the edge of the main air plate 1-3 and the transition plate 1-2 are both provided with air outlets 1-4, and the transition plate 1-2 adjacent to the door body is not provided with the air outlets 1-4.

In this embodiment, the air outlet 1-4 provided on the transition plate 1-2 of the cooking appliance can guide the hot air blown out by the circulating fan 3 to determine the flow direction of the hot air, and the air outlet 1-4 is not provided on the transition plate 1-2 adjacent to the door body, so that the hot air is blown into the cavity, the high-temperature hot air is not directly blown onto the door body, and the high temperature rise of the door body assembly 4 and the handle 5 is avoided.

It should be noted that, referring to fig. 3 to 4, the heat generating component 2, the circulating fan 3 and the fan cover 1 in the present embodiment are all disposed on the top of the cooking appliance. In some embodiments of the present application, the fixing plate 1-1 is used to fix the fan cover plate 1, the main wind plate 1-3 may protrude outward, the transition plate 1-2 is connected to the main wind plate 1-3 and the fixing plate 1-1 in an inclined state, and the included angles between the transition plate 1-2 and the main wind plate 1-3 and the fixing plate 1-1 are obtuse angles.

In some embodiments of the present application, the blower cover plate 1 may be formed by integral press molding.

In some embodiments of the present application, the heat generating component 2, the circulating fan 3 and the fan cover 1 may also be disposed at the rear of the cooking appliance.

In the embodiment, the main air plate 1-3 at the rotating position of the air flow in the cavity of the cooking appliance is not provided with the air outlet 1-4.

The air flow flowing out of the air outlet holes 1-4 of the main air plates 1-3 is prevented from influencing the heating of the food by the rotation of the air flow. The design mode of the air outlet holes 1-4 can be adjusted according to the rotation direction of the circulating fan 2, in the embodiment, the rotation direction of the circulating fan 2 is clockwise direction shown in fig. 4, therefore, the air outlet holes 1-4 are not arranged on the left edge of the main air plate 1-3 in the figure.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The door body assembly of the cooking appliance is characterized by comprising a door frame (4-1), and outer glass (4-4), middle glass (4-3) and inner glass (4-2) which are sequentially fixed on the door frame (4-1) at intervals, wherein the inner glass (4-2) faces towards a cavity of the cooking appliance, and the inner glass (4-2) and the door frame (4-1) are fixed in a sealing manner; the inner glass (4-2) can be sealed with a door frame of a cooking appliance to seal a cavity of the cooking appliance, wherein the gap between the outer glass (4-4) and the middle glass (4-3) is 1.8-2.5 times that between the middle glass (4-3) and the inner glass (4-2).

2. The door body assembly of the cooking appliance according to claim 1, wherein one side of the door frame (4-1) close to the cavity is provided with an inner glass fixing groove, the other side of the door frame (4-1) is provided with a supporting rib (4-1-1) for supporting the middle glass (4-3), and the thickness of the supporting rib is 1/3 of the thickness of the door frame.

3. The electric cooking appliance door body assembly according to claim 1, wherein a heat dissipation port (4-1-2) is formed in the top edge of the door frame (4-1) between the middle glass (4-3) and the outer glass (4-4); and a cold air inlet (4-1-3) is arranged at the bottom of the door plate frame (4-1) between the middle glass (4-3) and the outer glass (4-4).

4. The door body assembly of the electric cooking appliance according to claim 1, wherein a heat radiation reflecting film is attached to the side of the inner glass (4-2) close to the cavity or/and the side far from the cavity.

5. The door body assembly of the cooking appliance according to claim 1, further comprising a handle (5) fixed on the surface of the outer glass (4-4), wherein the handle (5) further comprises a blocking piece (5-3), the blocking piece (5-3) is arranged between the handle (5) and the outer glass (4-4), and the edge of the blocking piece (5-3) does not exceed the edge of the handle (5).

6. The door body assembly of the cooking appliance according to claim 5, wherein a plurality of fixing hole columns (5-1) are arranged on one side, close to the outer glass (4-4), of the handle (5), sleeves (5-2) are arranged on the peripheries of the fixing hole columns (5-1), and the fixing hole columns (5-1) are connected with the sleeves (5-2) through reinforcing ribs.

7. The door body assembly of the cooking appliance according to claim 5 or 6, wherein a plurality of supporting ribs (5-4) are arranged on the blocking piece (5-3) close to the outer glass (4-4), and the edges of the supporting ribs (5-4) are spaced from the edges of the blocking piece (5-3);

and a gluing groove (5-6) is formed in the outer side of the handle (5) far away from the outer glass (4-4), and the gluing groove (5-6) is used for adhering a glass plate.

8. The door body assembly of the cooking appliance according to claim 7, wherein the handle (5) corresponding to the glue applying grooves (5-6) and close to the outer glass (4-4) is further provided with a plurality of heat insulation grooves (5-5), and the heat insulation grooves (5-5) are provided with communication holes (5-5-1) communicated with the glue applying grooves (5-6).

9. A cooking appliance, characterized by comprising a cooking appliance body and the cooking appliance door body assembly (4) according to any one of claims 1 to 8, wherein the inner glass (4-2) in the cooking appliance door body assembly (4) can be sealed with a door frame of the cooking appliance body to seal the cavity of the cooking appliance.

10. The cooking appliance of claim 9, further comprising: the cooking appliance comprises a fan cover plate (1) arranged at the top or the rear part of a cavity of the cooking appliance, and a heating component (2) and a circulating fan (3) which are arranged in the fan cover plate (1); the fan cover plate (1) comprises a fixing plate (1-1) positioned at the edge, a main air plate (1-3) positioned at the middle part and a transition plate (1-2) connecting the fixing plate (1-1) and the main air plate (1-3), the middle part of the main air plate (1-3) is provided with an air inlet (1-3-1), the edge of the main air plate (1-3) and the transition plate (1-2) are both provided with air outlet holes (1-4), and the transition plate (1-2) adjacent to the cooking appliance door body assembly (4) is not provided with the air outlet holes (1-4); the circulating fan (3) is used for blowing hot air around the heat generating components to the outside of the fan cover plate (1);

and at the position of airflow rotation in the cavity of the cooking appliance, the air outlet holes (1-4) are not formed in the main air plate (1-3).

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