CN220442525U - Oven liner and oven - Google Patents

Abstract

The utility model belongs to the technical field of electric appliances, and discloses a liner of a baking oven and the baking oven. The inner container of the baking oven comprises a rear plate and a side plate assembly, wherein the side plate assembly comprises an upper side plate, a left side plate, a lower side plate and a right side plate which are sequentially connected end to end, a first fan is arranged on the outer side of the left side plate, the air quantity of the first fan on the front side and the rear side of a central shaft of the left side plate is different, one side with large air quantity is a first side, one side with small air quantity is a second side, and the open area of the first side is smaller than that of the second side; the second fan is installed in the outside of right side board, and the amount of wind of second fan in the right side board axis front and back both sides is different, and the one side that the amount of wind is big is the third side, and the one side that the amount of wind is little is the fourth side, and the open area of third side is less than the open area of fourth side. The oven liner and the oven can improve the uniformity of the hot air quantity of each part in the liner, thereby ensuring that the maturity of foods at different positions tends to be consistent.

Description

Oven liner and oven

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a liner of a baking box and the baking box.

Background

Baking ovens have become a common commercial and household device for processing baked foods, which are deeply favored by consumers. In general, the uniformity of the baking temperature affects the maturity of the food; therefore, how to improve the uniformity of the baking temperature is a technical problem to be considered in the design process.

Disclosure of Invention

The utility model aims to provide an oven liner, which can improve the uniformity of hot air quantity of each part in the liner, thereby improving the maturity of foods at different positions to be consistent.

Another object of the present utility model is to provide a toaster that can uniformly blow heat generated by a blower into a liner, thereby cooking food having a uniform maturity.

To achieve the purpose, the utility model adopts the following technical scheme:

an oven liner comprising:

a rear plate;

the side plate assembly comprises an upper side plate, a left side plate, a lower side plate and a right side plate which are sequentially connected end to end, and the rear end of the side plate assembly is connected with the rear plate;

a first fan is arranged on the outer side of the left side plate, the air quantity of the first fan is different on the front side and the rear side of the central axis of the left side plate, one side with large air quantity is a first side, one side with small air quantity is a second side, and the open area of the first side is smaller than that of the second side;

and a second fan is arranged on the outer side of the right side plate, the air quantity of the second fan is different on the front side and the rear side of the central axis of the right side plate, one side with large air quantity is a third side, one side with small air quantity is a fourth side, and the open pore area of the third side is smaller than that of the fourth side.

Optionally, the first side is adjacent to the back plate; the left side plate is provided with a plurality of left via hole groups, the left via hole groups comprise a plurality of first via holes, and the left via hole groups close to the first side are far away from the central axis of the left side plate compared with the left via hole groups close to the second side; or (b)

The third side is adjacent to the front end of the side plate assembly; a plurality of right via groups are formed on the right side plate, each right via group includes a plurality of second vias, and the right via group near the third side is separated from the central axis of the right side plate by Kong Zuyuan, compared with the right via group near the fourth side.

Optionally, the number of the first vias on the front side of the left side plate is greater than the number of the first vias on the rear side of the left side plate; or (b)

The third side is adjacent to the front end of the side plate assembly; the right side plate is provided with a plurality of right via hole groups, the right via hole groups comprise a plurality of second via holes, and the number of the second via holes positioned on the rear side of the right side plate is more than that of the second via holes positioned on the front side of the right side plate.

Optionally, the left via group located in the middle of the left side plate is circular and is radially arranged;

the left via hole group positioned at the front upper part of the left side plate is a first left via hole group, and the first left via hole group is arranged in three rows;

the left via hole group positioned in the front middle of the left side plate is a second left via hole group, and the second left via hole group is arranged in two rows.

Optionally, the left via group located at the rear upper part of the left side plate is a third left via group, and the third left via group is arranged in two rows and is flush with the upper two rows of the first left via group;

the left via group positioned in the rear middle of the left side plate is a fourth left via group, and the fourth left via group is arranged in a row Kong Zucheng.

Optionally, the right via group located in the middle of the right side plate is circular and is radially arranged;

the right via hole group positioned at the rear upper part of the right side plate is a first right via hole group, and the first right via hole group is arranged in three rows;

the right via hole group positioned in the rear middle of the right side plate is a second right via hole group, and the second right via hole group is arranged in two rows.

Optionally, the right via group located at the front upper part of the right side plate is a third right via group, and a plurality of second vias in the third right via group are arranged in a row and the number of the second vias is smaller than that of the second vias in the first right via group;

the right via group located in the front middle of the right side plate is a fourth right via group, and the second vias of the fourth right via group are arranged in a row and have a number smaller than that of the second vias in the second right via group.

Optionally, a plurality of first supporting protrusions are arranged on the left side plate in an inward protruding mode at intervals along the vertical direction, a plurality of second supporting protrusions are arranged on the right side plate in an inward protruding mode at intervals along the vertical direction, the first supporting protrusions and the second supporting protrusions are arranged in a one-to-one correspondence mode, and the first supporting protrusions and the second supporting protrusions are used for placing baking trays.

Optionally, N first supporting protrusions divide the left side plate into n+1 regions along a vertical direction, an opening area of an uppermost region is a, a sum of opening areas of two lowermost regions is B, B/a=c, and 0.8-1.5;

n second supporting bulges divide the right side plate into N+1 areas along the vertical direction, the open pore area of the uppermost area is D, the sum of the open pore areas of the two lowermost areas is E, E/F=G, and G is more than or equal to 0.8 and less than or equal to 1.5.

The baking box comprises the baking box liner and the transparent cover door, wherein the transparent cover door is arranged on the front side cover of the side plate assembly, and the opening area of the right side plate is larger than that of the left side plate.

Optionally, the baking box further comprises a first fan and a second fan, the first fan and the second fan are respectively installed on the outer sides of the left side plate and the right side plate, the left side plate and the outer sides of the right side plate are identical in structure, the baking box further comprises a fan cover and a heating tube, the first fan is installed on one side, deviating from the left side plate, of the fan cover, the fan cover is fixedly connected to the left side plate in a sealing mode, a heating tube is arranged between the first fan and the left side plate, and the heating tube is installed on one side, facing the left side plate, of the fan cover.

Optionally, the baking box further comprises a heat shield, the heat shield is buckled on one side of the fan shield, which is away from the left side plate, and heat insulation cotton is arranged between the heat shield and the fan shield.

The utility model has the beneficial effects that:

the utility model provides a baking box liner, which is characterized in that the front and rear air output of two side plates of the whole baking box liner are balanced by arranging different opening areas on the front and rear sides of a central shaft of a left side plate and arranging different opening areas on the front and rear sides of the central shaft of a right side plate, wherein the opening area on the side with large air output is smaller than the opening area on the front and rear sides of the central shaft of the right side plate, so that the maturity of foods at different positions can be promoted to be consistent when foods are baked.

The utility model also provides a baking box, by adopting the inner container of the baking box, the heat generated by the fan can be uniformly blown into the inner container, and foods with consistent maturity can be cooked.

Drawings

FIG. 1 is a schematic view of a liner of a toaster provided by an embodiment of the present utility model;

FIG. 2 is an exploded view of a partial oven according to an embodiment of the present utility model;

fig. 3 is an assembly structure diagram of an outer part of the liner according to the embodiment of the present utility model.

In the figure:

100. an inner container of the baking oven;

10. a rear plate;

20. a side panel assembly; 21. an upper side plate;

22. a left side plate; 221. a first left via group; 222. a second left via group; 223. a third left via group; 224. a fourth left via group; 225. a first via; 226. a first supporting protrusion;

23. a lower side plate;

24. a right side plate; 241. a first right set of vias; 242. a second right set of vias; 243. a third right set of vias; 244. a fourth right set of vias; 245. a second via; 246. a second supporting protrusion;

200. a first fan; 300. a transparent cover door; 400. a fan cover; 500. a heating tube; 600. a seal ring; 700. a heat shield; 800. and (5) heat insulation cotton.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a baking oven liner 100, which can improve the uniformity of hot air quantity of each part in the liner, and further ensure that the maturity of foods at different positions tends to be consistent. As shown in fig. 1 and 2, the inner container 100 of the oven comprises a rear plate 10 and a side plate assembly 20, wherein the side plate assembly 20 comprises an upper side plate 21, a left side plate 22, a lower side plate 23 and a right side plate 24 which are connected end to end in sequence, and the rear end of the side plate assembly 20 is connected with the rear plate 10; the first fan 200 is arranged on the outer side of the left side plate 22, the air quantity of the first fan 200 on the front side and the rear side of the central axis of the left side plate 22 is different, the side with large air quantity is a first side, the side with small air quantity is a second side, and the open area of the first side is smaller than that of the second side; the second fan is installed in the outside of right side board 24, and the amount of wind of second fan in the front and back both sides of right side board 24 axis is different, and the one side that the amount of wind is big is the third side, and the one side that the amount of wind is little is the fourth side, and the open pore area of third side is less than the open pore area of fourth side.

This toast case inner bag 100 is in the difference of the trompil area setting of both sides around the axis of left side board 22, and the big one side trompil area of amount of wind is less than the little one side of amount of wind, the difference of the trompil area setting of both sides around the axis of right side board 24, and the big one side trompil area of amount of wind is less than the little one side of amount of wind for the front and back of the play amount of wind of two curb plates of whole toast case inner bag 100 are all comparatively balanced, and then improve the homogeneity of each partial hot amount of wind in the inner bag, when making toasted food, can promote the ripeness degree of the food of different positions and tend to be unanimous.

Specifically, as shown in fig. 1 and 2, the first side is adjacent to the rear plate 10, the left side plate 22 is provided with a plurality of left via hole groups, each left via hole group includes a plurality of first via holes 225, and the left via hole group located at the rear side of the left side plate 22 is far from the central axis of the left side plate 22 compared with the left via hole group located at the front side of the left side plate 22; or, the third side is adjacent the front end of the side panel assembly 20; the right side plate 24 is provided with a plurality of right via groups, the right via groups include a plurality of second vias 245, and the right via groups close to the third side are far away from the central axis of the right side plate 24 compared with the right via groups close to the fourth side.

By forming a plurality of left via hole groups on the left side plate 22, each left via hole group comprises a plurality of first via holes 225, and the left via hole group positioned at the rear side of the left side plate 22 is far away from the central axis of the left side plate 22 compared with the left via hole group positioned at the front side of the left side plate 22, so that wind at the front side of the left side plate 22 is blown out from a position close to the front end of the left side plate 22, and the wind quantity of the left side plate 22 is balanced; similarly, by providing the right side plate 24 with a plurality of right via hole groups, each right via hole includes a plurality of second via holes 245, and the right via hole group located on the front side of the right side plate 24 is far away from the central axis of the right side plate 24 compared with the right via hole group located on the rear side of the right side plate 24, so that wind on the rear side of the right side plate 24 is blown out from a position close to the rear end of the right side plate 24, and the wind quantity of the right side plate 24 is balanced.

Alternatively, the number of first vias 225 located on the front side of the left side plate 22 is greater than the number of first vias 225 located on the rear side of the left side plate 22; or, the third side is adjacent the front end of the side panel assembly 20; the right side plate 24 is provided with a plurality of right via hole groups, the right via hole groups comprise a plurality of second via holes 245, and the number of the second via holes 245 positioned at the rear side of the right side plate 24 is greater than that of the second via holes 245 positioned at the front side of the right side plate 24.

By arranging a plurality of right via hole groups on the right rear side plate, each right via hole group comprises a plurality of second via holes 245, and the number of the second via holes 245 positioned on the rear side of the right side plate 24 is greater than that of the second via holes 245 positioned on the front side of the right side plate 24, more hot air can be blown out from one side of the right side plate 24 close to the rear plate 10, the air quantity on one side of the right side plate 24 is balanced, and the uniformity of the hot air quantity of each part in the liner is further improved; similarly, the different numbers of the first through holes 225 on the front and rear sides of the left side plate 22 can balance the air quantity on the front and rear sides of the left side plate 22. Optionally, the left via group located in the middle of the left side plate 22 is circular and radially disposed; the left through hole group is used for allowing most air quantity of the side air blower to pass through.

Alternatively, as shown in fig. 1, the left via group located at the front upper portion of the left side plate 22 is a first left via group 221 (outlined in dotted line), and the first left via group 221 is arranged in three rows. Specifically, the first plurality of vias 225 of the second row are disposed closer to the front side of the left side plate 22 than the first plurality of vias 225 of the first row, and the first plurality of vias 225 of the third row are disposed closer to the front side of the left side plate 22 than the first plurality of vias 225 of the second row. The first via holes 225 of the first left via hole group 221 can be arranged as close to the front side of the left side plate 22 as possible under the condition that the punching position allows, so that the hot air quantity of the front side of the left side plate 22 is increased, and the hot air quantity of the front side and the rear side of the left side plate 22 is balanced.

Optionally, the left via group located at the rear upper portion of the left side plate 22 is a third left via group 223, and the third left via group 223 is disposed in two rows and is flush with the upper two rows of the first left via group 221. Compared with the first left via hole group 221, the arrangement of one row of first via holes 225 is reduced in the longitudinal direction, so that the hot air volume of the third left via hole group 223 can be more prone to the forward and backward hot air delivery, and further the hot air is evenly distributed to the front side more, and the hot air volume of the front and rear sides of the left side plate 22 can be balanced by matching with the first left via hole group 221.

Optionally, the left via group located in the front middle of the left side plate 22 is a second left via group 222, and the second left via group 222 is arranged in two rows. Specifically, the first row of the second left via group 222 has four first vias 225 and the second row has three first vias 225. The punching area in the longitudinal direction at this position is made larger, and the hot air quantity at the front side of the left side plate 22 is increased.

Optionally, the left via group located in the rear middle of the left side plate 22 is a fourth left via group 224, and the fourth left via group 224 is disposed in a row. Compared with the second left via hole group 222, the arrangement of one row of the first via holes 225 is reduced in the longitudinal direction, so that the hot air volume of the fourth left via hole group 224 can be more prone to the forward and backward hot air delivery, and further the hot air is evenly distributed to the front side more, and the hot air volume of the front and rear sides of the left side plate 22 can be balanced by matching with the second left via hole group 222.

Specifically, the right via group located in the middle of the right side plate 24 is circular and is radially arranged; the right through hole group is used for allowing most air quantity of the side air blower to pass through.

Optionally, the right via group located at the rear upper portion of the right side plate 24 is a first right via group 241, and the first right via group 241 is arranged in three rows. Specifically, the plurality of second vias 245 of the second row are disposed closer to the rear plate 10 than the plurality of second vias 245 of the first row, and the plurality of second vias 245 of the third row are disposed closer to the front side of the right side plate 24 than the plurality of second vias 245 of the second row. The second via holes 245 of the first right via hole group 241 can be arranged as close to the rear side of the right side plate 24 as possible under the premise of allowing the punching position, so that the hot air quantity of the rear side of the right side plate 24 is improved, and the hot air quantity of the front side and the rear side of the right side plate 24 is balanced.

Specifically, the right via group located in the rear middle of the right side plate 24 is a second right via group 242, and the second right via group 242 is arranged in two rows. Specifically, the first row of the second right via group 242 has four second vias 245, and the second row has four second vias 245. The punching area at the position in the longitudinal direction is larger, and the hot air quantity at the rear side of the right side plate 24 is improved.

Optionally, the right via group located at the front upper portion of the right side plate 24 is a third right via group 243, and the plurality of second vias 245 in the third right via group 243 are arranged in a row and the number of the second vias 245 is smaller than the number of the second vias 245 in the first right via group 241. Compared with the first right via hole group 241, the arrangement of two rows of the first via holes 225 is reduced in the longitudinal direction, so that the hot air volume of the third right via hole group 243 is more prone to the forward and backward hot air delivery, and the hot air is evenly distributed to the rear side more, and the hot air volume of the left side plate 22 is also balanced by matching with the first right via hole group 241.

Optionally, the right via group located in the front middle of the right side plate 24 is a fourth right via group 244, and the plurality of second vias 245 of the fourth right via group 244 are arranged in a row and the number of the second vias 245 is smaller than the number of the second vias 245 in the second right via group 242. The punching area at the position in the longitudinal direction is larger, and the hot air quantity at the rear side of the right side plate 24 is improved.

It should be noted that, as shown in fig. 1, a plurality of first supporting protrusions 226 are disposed on the left side plate 22 and disposed at intervals along the vertical direction, a plurality of second supporting protrusions 246 are disposed on the right side plate 24 and disposed at intervals along the vertical direction, the first supporting protrusions 226 and the second supporting protrusions 246 are disposed in one-to-one correspondence, and each of the first supporting protrusions 226 and the corresponding second supporting protrusions 246 is used for placing a baking tray.

Each left via group is disposed in a plane area between two adjacent first supporting protrusions 226, and besides the first left via group 221, the second left via group 222, the third left via group 223 and the fourth left via group 224 described above, the left side plate 22 is also disposed with a left via group at a suitable position at the lower portion, which is not described herein.

Each right via group is disposed in a plane area between two adjacent second supporting protrusions 246, and besides the first right via group 241, the second right via group 242, the third right via group 243 and the fourth right via group 244 described above, the right side plate 24 is also disposed with a right via group at a suitable position at the lower portion, which is not described herein.

Because the first supporting protrusions 226 and the corresponding second supporting protrusions 246 are used for supporting the baking tray, the baking tray can be placed to cause uneven heating of the upper surface and the lower surface of food, and the upper side of the baking tray is not heated due to shielding of the tray bottom, so that the heating effect is good, and the maturity of the two surfaces of the food is different.

In order to solve the above-described problems, it is preferable that, as shown in fig. 1, N first supporting protrusions 226 divide the left side plate 22 into n+1 regions in the vertical direction, the opening area of the uppermost region is a, the sum of the opening areas of the two lowermost regions is B, B/a=c, and 0.8+.c+.1.5; the N second supporting protrusions 246 divide the right side plate 24 into n+1 regions in the vertical direction, the opening area of the uppermost region is D, the sum of the opening areas of the two lowermost regions is E, E/f=g, and 0.8+.g+.1.5. Through above-mentioned setting, the area of opening of two regions below increases, has increased the heating of food lower part, and then makes the food both sides be heated and tends to even, guarantees that food both sides maturity area is unanimous. However, due to practical limitations, the lower two areas are not so large due to the interference problems of assembly and design of the grid, so the lower limit is set to 0.8.

In this embodiment, four first supporting protrusions 226 and four second supporting protrusions 246 are provided, that is, N is 5, and in other embodiments, the number of the first supporting protrusions 226 and the second supporting protrusions 246 may be adaptively adjusted according to the size of the oven, and may be one, two, three or more, which is not limited herein.

The embodiment also provides a baking oven, which further comprises a first fan 200 and a second fan, wherein the first fan 200 and the second fan are respectively installed on the outer sides of the left side plate 22 and the right side plate 24, and heat generated by the fans can be uniformly blown into the inner container by adopting the baking oven inner container 100.

The structures of the outer sides of the left side plate 22 and the right side plate 24 are the same, and the structure of the outer side of the left side plate 22 is used for illustration, as shown in fig. 2, the baking oven further comprises a fan cover 400 and a heating tube 500, the first fan 200 is mounted on one side of the fan cover 400, which is away from the left side plate 22, the fan cover 400 is sealed and buckled on the left side plate 22, a heating tube 500 is arranged between the first fan 200 and the left side plate 22, and the heating tube 500 is mounted on one side of the fan cover 400, which is facing the left side plate 22. Can ensure that the wind blown out by the fan is heated before entering the inner container, and ensure the heating effect of food.

Preferably, as shown in fig. 2 and 3, a sealing ring 600 is provided between the fan housing 400 and the left side plate 22. The sealing performance of the fan can be improved, and the air blown out by the fan is prevented from overflowing.

Preferably, the baking box further comprises a heat shield 700, the heat shield 700 is buckled on one side of the fan cover 400, which faces away from the left side plate 22, and heat insulation cotton 800 is arranged between the heat shield 700 and the fan cover 400. Through above-mentioned setting, can prevent that heat from diffusing to outside, cause heat loss, simultaneously, prevent that the user from being scalded.

Preferably, as shown in fig. 2, the oven further includes a transparent cover door 300, the front side cover of the side plate assembly 20 is provided with the transparent cover door 300, and because the materials of the rear plate 10 and the transparent cover door 300 are different, hot air on one side of the transparent cover door 300 inevitably generates more heat exchange with the outside, so that the temperature of hot air on one side of the transparent cover door 300 drops faster, and the temperature difference of hot air before and after the inner container is larger.

In order to solve the above problem, the open area of the right side plate 24 is larger than that of the left side plate 22, and by the above arrangement, the amount of hot air entering the right side plate 24 is larger, and even if more heat exchange is generated between the transparent cover plate and the outside, the temperature difference between the front side and the rear side of the inner container is not large, so that the food heating temperature uniformity between the front side and the rear side is ensured. Specifically, the number of second vias 245 is greater than the number of first vias 225.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (12)

1. The oven inner bag, its characterized in that includes:

a rear plate (10);

the side plate assembly (20) comprises an upper side plate (21), a left side plate (22), a lower side plate (23) and a right side plate (24) which are connected end to end in sequence, and the rear end of the side plate assembly (20) is connected with the rear plate (10);

a first fan (200) is arranged on the outer side of the left side plate (22), the air volumes of the first fan (200) on the front side and the rear side of the central axis of the left side plate (22) are different, one side with large air volume is a first side, one side with small air volume is a second side, and the open area of the first side is smaller than that of the second side;

the second fans are arranged on the outer side of the right side plate (24), the air volumes of the second fans are different on the front side and the rear side of the central axis of the right side plate (24), one side with large air volume is a third side, one side with small air volume is a fourth side, and the open pore area of the third side is smaller than that of the fourth side.

2. The oven liner according to claim 1, characterized in that the first side is adjacent to the back plate (10); the left side plate (22) is provided with a plurality of left via hole groups, the left via hole groups comprise a plurality of first via holes (225), and the left via hole groups close to the first side are far away from the central axis of the left side plate (22) compared with the left via hole groups close to the second side; or (b)

The third side being adjacent a front end of the side plate assembly (20); a plurality of right via hole groups are formed in the right side plate (24), the right via hole groups comprise a plurality of second via holes (245), and the right via hole groups close to the third side are separated from the central axis of the right side plate (24) by Kong Zuyuan compared with the right via holes close to the fourth side.

3. The oven liner of claim 2, characterized in that the number of said first vias (225) located on the front side of said left side plate (22) is greater than the number of said first vias (225) located on the rear side of said left side plate (22); or (b)

The third side being adjacent a front end of the side plate assembly (20); a plurality of right via hole groups are formed in the right side plate (24), the right via hole groups comprise a plurality of second via holes (245), and the number of the second via holes (245) located on the rear side of the right side plate (24) is more than that of the second via holes (245) located on the front side of the right side plate (24).

4. A baking oven liner according to claim 3, characterized in that the left via group located in the middle of the left side plate (22) is circular and arranged radially;

the left via hole group positioned at the front upper part of the left side plate (22) is a first left via hole group (221), and the first left via hole group (221) is arranged in three rows;

the left via hole group positioned in the front middle of the left side plate (22) is a second left via hole group (222), and the second left via hole group (222) is arranged in two rows.

5. The oven liner according to claim 4, characterized in that the left via group located at the rear upper part of the left side plate (22) is a third left via group (223), the third left via group (223) is arranged in two rows and is flush with the upper two rows of the first left via group (221);

the left via hole group positioned in the rear middle of the left side plate (22) is a fourth left via hole group (224), and the fourth left via hole group (224) is arranged in a row.

6. A baking oven liner according to claim 3, characterized in that the right set of vias in the middle of the right side plate (24) is circular and radially arranged;

the right via hole group positioned at the rear upper part of the right side plate (24) is a first right via hole group (241), and the first right via hole group (241) is arranged in three rows;

the right via hole group positioned in the rear middle of the right side plate (24) is a second right via hole group (242), and the second right via hole group (242) is arranged in two rows.

7. The oven liner according to claim 6, wherein the right via group located at the front upper portion of the right side plate (24) is a third right via group (243), the second vias (245) in the third right via group (243) being arranged in a row and being smaller in number than the second vias (245) in the first right via group (241);

the right via hole group located in the front middle of the right side plate (24) is a fourth right via hole group (244), and a plurality of second via holes (245) of the fourth right via hole group (244) are arranged in a row and are smaller than the second via holes (245) in the second right via hole group (242).

8. The oven liner according to any one of claims 1 to 7, wherein a plurality of first supporting protrusions (226) are provided on the left side plate (22) in an inward protruding manner at intervals in a vertical direction, a plurality of second supporting protrusions (246) are provided on the right side plate (24) in an inward protruding manner at intervals in a vertical direction, the first supporting protrusions (226) and the second supporting protrusions (246) are provided in a one-to-one correspondence manner, and the first supporting protrusions (226) and the second supporting protrusions (246) are used for placing baking trays.

9. The oven liner according to claim 8, wherein N first support protrusions (226) divide the left side plate (22) into n+1 areas in the vertical direction, the uppermost area has an open area a, the sum of the open areas of the two lowermost areas is B, B/a=c, and 0.8C is 1.5;

n second supporting bulges (246) divide the right side plate (24) into N+1 areas along the vertical direction, the open pore area of the uppermost area is D, the sum of the open pore areas of the two lowermost areas is E, E/F=G, and G is more than or equal to 0.8 and less than or equal to 1.5.

10. Oven, characterized in that it comprises an oven liner according to any one of claims 1-9 and a transparent cover door (300), wherein the transparent cover door (300) is provided on the front side cover of the side plate assembly (20), and the open area of the right side plate (24) is larger than the open area of the left side plate (22).

11. The oven according to claim 10, further comprising a first fan (200) and a second fan, wherein the first fan (200) and the second fan are respectively mounted on the outer sides of the left side plate (22) and the right side plate (24), the left side plate (22) and the right side plate (24) are identical in structure, the oven further comprises a fan cover (400) and a heating tube (500), the first fan (200) is mounted on one side of the fan cover (400) facing away from the left side plate (22), the fan cover (400) is fixedly connected to the left side plate (22) in a sealing manner, a heating tube (500) is arranged between the first fan (200) and the left side plate (22), and the heating tube (500) is mounted on one side of the fan cover (400) facing the left side plate (22).

12. The oven according to claim 11, characterized in, that the oven further comprises a heat shield (700), said heat shield (700) being fastened to a side of said fan shield (400) facing away from said left side plate (22), said heat shield (700) and said fan shield (400) being provided with heat insulating cotton (800) therebetween.