CN107019438B - electric oven - Google Patents

Abstract

The application provides an electric oven, comprising: the cooking cavity, install heating tube in the cooking cavity and install hot air subassembly on the cooking cavity external surface, the back plate of cooking cavity includes interior back plate, interior back plate includes the first subplate that extends from back to preceding upward slope, both ends are equipped with first air vent and second air vent respectively about the first subplate, hot air subassembly is installed on the surface of first subplate, in this scheme, hot air subassembly is installed on the first subplate of slope, make hot air get into the cooking cavity with the direction of motion of downward front slope, receive opposite side air vent negative pressure influence, hot air can gradually to negative pressure air vent direction skew, simultaneously, hot air can rise gradually according to aerodynamic characteristics, so, hot air in the cooking cavity all has the motion component in three direction from back to forth, control, all there are the motion component in upper and lower direction, make hot air circulation can compromise the whole space in the cooking cavity, thereby make the heat distribution in the cooking cavity more even.

Description

electric oven

Technical field

The present invention relates to the field of kitchen appliances, and more specifically, to an electric oven.

Background technique

Existing electric ovens usually have an air inlet and an air outlet on the cooking cavity, and hot air components are installed at corresponding positions on the outer surface of the cooking cavity to form a hot air circulation system. The hot air components usually include fan blades, motors and internal molded components. The air guide hood of the air duct sucks the hot air in the cooking cavity into the air guide hood from the air inlet side through the rotation of the fan blades, and then sends the hot air from the air outlet to the other side of the cooking cavity through the air duct, forming a Hot air circulates to distribute heat evenly. At present, the hot air circulation system generally adopts the following four settings: A. The hot air component is installed on the left or right side panel of the cooking cavity. The air inlet and air outlet are respectively located at the rear and front ends of the side panels. The hot air circulates in and out the horizontal direction, but the heat in the upper and lower parts of the cooking cavity is uneven; B. The air component is installed on the left or right side panel of the cooking cavity, and the air inlet and outlet are respectively located. At the top and bottom of the side panel, the air flows in and out vertically, and the hot air circulates in the vertical direction, but the heat at the front and rear ends of the cooking cavity is not uniform; C. The air component is installed on the back panel of the cooking cavity , the air inlet and air outlet are respectively located at the left and right ends of the rear panel, the air comes in and out horizontally, and the hot air circulates in the horizontal direction, but the heat in the upper and lower parts of the cooking cavity is not uniform; D. The air assembly is installed in the cooking cavity On the rear panel of the body, the air inlet and outlet are respectively located at the top and bottom of the rear panel. The air comes in and out vertically, and the hot air circulates in the vertical direction, but the heat at the left and right ends of the cooking cavity is not uniform. It can be seen that the hot air circulation system of the existing electric oven cannot take into account the entire space in the cooking cavity, resulting in uneven heat distribution in the cooking cavity.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, an object of the present invention is to provide an electric oven with uniform heat distribution in the cooking cavity.

In order to achieve the above object, an embodiment of the present invention provides an electric oven, including: a cooking cavity, a heating pipe installed in the cooking cavity, and a hot air component installed on the outer surface of the cooking cavity. The cavity includes a top panel, a bottom panel, a left panel, a right panel and a rear panel. The rear panel includes an inner rear panel, and the edges of the inner rear panel are respectively connected with the top panel, the bottom panel, the left panel, and the left panel. The right side panel is connected, and the inner rear panel includes a first sub-panel extending obliquely upward from back to front. The front edge of the first sub-panel is connected to the top panel, and the first sub-panel is close to the left and right sides. A first vent hole and a second vent hole are respectively provided at the end positions, and the hot air component is installed on the outer surface of the first sub-board for injecting air into the first vent hole and the second vent hole. One supplies air, and the other of the first ventilation hole and the second ventilation hole inhales air, so that hot air circulation is formed in the cooking cavity.

In this solution, a space for cooking food is formed between the inner rear panel, the top panel, the bottom panel, the left side panel, and the right side panel. The inner rear panel includes an inclined first sub-board, and the left and right ends of the first sub-board are respectively There are a first vent hole and a second vent hole. The hot air component is installed on the first sub-board. When the hot air component works, a negative pressure is generated at the position of the first vent hole or the second vent hole, and the hot air in the cooking cavity is released from the first vent hole. The vent hole inhales the air duct, and then transports the hot air along the air duct to the position of the other vent hole, so that the hot air enters the cooking cavity in a downward and forward inclined direction. Affected by the negative pressure of the vent hole on the other side, the hot air will gradually move towards the negative pressure. The direction of the vent hole is offset. At the same time, according to the aerodynamic characteristics, the hot air will gradually rise. In this way, the hot air in the cooking cavity has movement components in the front and rear, left and right, and up and down directions, so that the hot air circulation can take into account the cooking cavity. the entire space within the body, resulting in a more even distribution of heat within the cooking cavity. In addition, compared with the previous solution of installing the hot air component vertically on the back panel of the cooking cavity, the hot air component is installed on the inclined first sub-board, so that the hot air component is designed to occupy less space in the depth direction of the cooking cavity. Thus, the body size of the electric oven can be reduced. In addition, the first sub-plate is tilted upward from the back to the front. This design is conducive to reflecting the heat radiation in the cooking cavity to the location of the food, thereby improving the heating efficiency.

In the above technical solution, preferably, the inner rear panel further includes a second sub-panel extending downward from the rear edge of the first sub-panel.

In the above technical solution, preferably, the inner rear panel further includes a third sub-panel, the third sub-panel extends downwardly from the back to the front, and the rear edge of the third sub-panel is in contact with the second sub-panel. The lower edge of the board is connected, and the front edge of the third sub-board is connected with the bottom plate.

In this solution, the third sub-board is tilted downward from back to front. This design is conducive to reflecting the heat radiation in the cooking cavity toward the location of the food, thereby improving heating efficiency.

In the above technical solution, preferably, the inner rear panel further includes: a fourth sub-panel, the fourth sub-panel extends obliquely from the back to the front, and the rear edge of the fourth sub-panel is in contact with the second sub-panel. The left edge of the sub-board is connected, the front edge of the fourth sub-board is connected to the left side board, the upper edge of the fourth sub-board is connected to the left edge of the first sub-board, and the fourth sub-board is connected to the left edge of the fourth sub-board. The lower edge of the board is connected to the left edge of the third sub-board; the fifth sub-board extends obliquely from back to front to the right, and the rear edge of the fifth sub-board is connected to the second sub-board. The right edge of the board is connected, the front edge of the fifth sub-board is connected to the right side board, the upper edge of the fifth sub-board is connected to the right edge of the first sub-board, and the fifth sub-board The lower edge is connected to the right edge of the third sub-board.

In this solution, the inner and rear panels include five sub-panels, which form a tapered structure with a wide front and narrow back to more effectively reflect the heat radiation in the cooking cavity to the location of the food, thus improving the heating efficiency of the electric oven. .

In the above technical solution, preferably, the first sub-board, the second sub-board, the third sub-board, the fourth sub-board and the fifth sub-board are of an integrated structure, and the The connection part between the first sub-board and the second sub-board, the connection part between the third sub-board and the second sub-board, the connection part between the fourth sub-board and the second sub-board, all The connecting parts of the fifth sub-board and the second sub-board are respectively folds formed by bending.

In this plan, the five sub-boards are an integrated structure, formed by punching and bending one plate, so that the production process of designing the inner and rear panels is simple.

In the above technical solution, preferably, the first sub-board, the third sub-board, the fourth sub-board and the fifth sub-board are jointly connected through a snap-in structure respectively.

In this solution, the four sub-boards located around the second sub-board are equipped with snap-in structures and are connected through the snap-in structures. This design makes the connection structure between the sub-boards simple and helps improve the efficiency of processing and forming the inner and rear panels. Specifically, one of the two adjacent sub-boards may be provided with a protruding portion for engaging, and the other may be provided with a matching engaging slot.

In the above technical solution, preferably, the first sub-board, the second sub-board, the third sub-board, the fourth sub-board and the fifth sub-board are welded.

In the above technical solution, preferably, the hot air assembly includes a motor, a heating fan blade and an air guide hood. The air guide hood includes a top wall and side walls extending downward from the edge of the top wall. The top wall A connection hole is provided on the wall, the bottom of the side wall is fixedly connected to the first sub-board and the first ventilation hole and the second ventilation hole cover are provided inside, and the heating fan blade is installed on the Inside the air guide hood and opposite to the first ventilation hole or the second ventilation hole, the motor is fixedly installed on the outer surface of the top wall, and the motor shaft of the motor passes through the connecting hole and is connected to the second ventilation hole. The heating fan blades are fixedly connected and used to drive the heating fan blades to rotate around the axis.

In this solution, the hot air component includes a motor, a heating fan blade and an air guide cover. The bottom of the side wall of the air guide cover is fixedly connected to the first sub-board and the first vent hole and the second vent cover are set inside, so that the air guide cover An air duct is formed between the electric oven and the first sub-board, and the hot fan blades are installed in the air guide hood. When the electric oven is working, the motor drives the hot fan blades to rotate, causing negative pressure to be generated at the position of the first vent hole or the second vent hole, and the cooking cavity is The hot air in the body is sucked into the air duct through the vent hole, and then the hot air is transported along the air duct to the position of another vent hole, so that the hot air enters the cooking cavity in a downward and forward oblique movement direction, thereby forming a hot air circulation in the cooking cavity.

Specifically, the hot air assembly also includes a motor bracket, and the motor is fixed on the upper surface of the top wall of the air guide hood through the motor bracket.

In the above technical solution, preferably, the hot air component also has a heat dissipation fan blade, which is fixedly connected to the motor shaft and located outside the air guide hood for being driven by the motor shaft to the desired direction. The motor blows air.

In this solution, the hot air component also includes a cooling fan blade. When the hot air component is working, the cooling fan blade moves under the drive of the motor shaft, blows air to the motor, and dissipates heat for the motor and the installation space where the motor is located.

In any of the above technical solutions, preferably, the rear panel further includes a rear panel outer cover, the rear panel outer cover is provided behind the inner rear panel, and the hot air component is located between the inner rear panel and the inner rear panel. Between the rear panel covers.

In this solution, a rear panel outer cover is installed behind the inner rear panel, and the rear panel outer cover covers the hot air component inside to protect the hot air component.

Additional aspects and advantages of the invention will be apparent from the description which follows, or may be learned by practice of the invention.

Description of the drawings

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

Figure 1 is a schematic cross-sectional structural view of an electric oven according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of the electric oven shown in Figure 1 after the rear panel outer cover is removed;

Figure 3 is a schematic front structural view of the electric oven shown in Figure 1 after the door body is removed;

Figure 4 is a schematic structural diagram of the inner rear panel shown in Figure 1;

Figure 5 is a structural schematic diagram of the inner rear panel shown in Figure 4 from another angle;

Figure 6 is a schematic rear structural view of the inner rear panel shown in Figure 4;

Figure 7 is a schematic structural diagram of the inner rear panel shown in Figure 6, viewed from above;

Fig. 8 is a schematic left structural diagram of the inner rear panel shown in Fig. 4.

Among them, the curved arrow in Figure 1 represents the hot air circulation direction, and the corresponding relationship between the reference signs and component names in Figures 1 to 8 is:

1 top panel, 2 bottom panel, 3 left panel, 4 right panel, 5 inner rear panel, 51 first sub-panel, 511 first vent, 512 second vent, 52 second sub-panel, 53 third sub-panel , 54 fourth sub-board, 55 fifth sub-board, 6 hot air components, 61 motor, 62 heating fan blades, 63 air guide hood, 64 cooling fan blades, 7 rear panel outer cover, 8 oven door, 9 baking pan.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited to the specific implementation disclosed below. Example limitations.

As shown in Figures 1 to 8, an embodiment of the present invention provides an electric oven, including: a cooking cavity, a heating pipe installed in the cooking cavity, and a hot air component 6 installed on the outer surface of the cooking cavity. The body includes a top panel 1, a bottom panel 2, a left panel 3, a right panel 4 and a rear panel. Usually, heating pipes are installed below the top panel 1 and above the bottom panel 2. The rear panel includes an inner rear panel 5, and the inner rear panel 5 The edges are respectively connected to the top panel 1, the bottom panel 2, the left panel 3, and the right panel 4. The inner rear panel 5 includes a first sub-panel 51 that extends obliquely upward from back to front. The front edge of the first sub-panel 51 is connected to the top panel 1 connection, the first sub-board 51 is provided with a first ventilation hole 511 and a second ventilation hole 512 near the left and right ends respectively. The hot air component 6 is installed on the outer surface of the first sub-board 51 for supplying air to the first ventilation hole 511 Air is supplied from one of the first vent hole 511 and the second vent hole 512, and air is sucked from the other one of the first vent hole 511 and the second vent hole 512, so that hot air circulation is formed in the cooking cavity.

In this solution, a space for cooking food is formed between the inner rear panel 5, the top panel 1, the bottom panel 2, the left side panel 3 and the right side panel 4. The inner rear panel 5 includes a first sub-board 51 arranged at an angle. The left and right ends of the board 51 are respectively provided with first ventilation holes 511 and second ventilation holes 512. The hot air assembly 6 is installed on the first sub-board 51. When the hot air assembly 6 works, the first ventilation hole 511 or the second ventilation hole The negative pressure is generated at position 512, and the hot air in the cooking cavity is sucked into the air duct through the vent hole, and then the hot air is transported along the air duct to the other vent position, so that the hot air enters the cooking cavity in a downward and forward oblique movement direction, and is affected by Affected by the negative pressure of the vent hole on the other side, the direction of hot air movement will gradually shift toward the direction of the negative pressure vent hole. At the same time, according to the aerodynamic characteristics, the direction of hot air movement will gradually rise. In this way, the hot air in the cooking cavity moves forward, backward, and forward. There are motion components in the left and right, up and down directions, so that the hot air circulation can take into account the entire space in the cooking cavity, thereby making the heat distribution in the cooking cavity more even. In addition, compared with the previous solution of installing the hot air assembly vertically on the back panel of the cooking cavity, the hot air assembly 6 is installed on the inclined first sub-board 51, so that the space occupied by the hot air assembly 6 in the depth direction of the cooking cavity is designed. Less, thereby reducing the body size of the electric oven. In addition, the first sub-plate 51 is inclined upward from the back to the front. This design is conducive to reflecting the heat radiation in the cooking cavity to the location of the food, thereby improving the heating efficiency.

Specifically, the oven door 8 is hinged at the front end of the cooking cavity of the electric oven, and the opening of the cooking cavity is closed by the oven door 8 to form a sealed cooking space. A baking pan 9 for carrying food is installed in the cooking cavity. A number of through holes are evenly opened on the bottom wall of the baking pan 9. This design facilitates the hot air to penetrate the baking pan 9 to form circular convection in the cooking cavity, and also allows the food to more fully interact with the cooking cavity. The hot air flow contacts, thus improving the uniformity of heating.

As shown in FIGS. 4 to 8 , in the above technical solution, preferably, the inner rear panel 5 further includes a second sub-panel 52 , and the second sub-panel 52 extends downward from the rear edge of the first sub-panel 51 .

In the above technical solution, preferably, the inner rear panel 5 also includes a third sub-panel 53 , the third sub-panel 53 extends downwardly from the back to the front, and the rear edge of the third sub-panel 53 is in contact with the second sub-panel 52 The lower edge of the third sub-board 53 is connected to the bottom plate 2 .

In this solution, the third sub-plate 53 is inclined downward from the back to the front. This design is conducive to reflecting the heat radiation in the cooking cavity to the location of the food, thereby improving the heating efficiency.

In the above technical solution, preferably, the inner rear panel 5 further includes: a fourth sub-panel 54 , the fourth sub-panel 54 extends obliquely from the back to the front, and the rear edge of the fourth sub-panel 54 is in contact with the second sub-panel. 52 is connected to the left edge, the front edge of the fourth sub-board 54 is connected to the left side panel 3, the upper edge of the fourth sub-board 54 is connected to the left edge of the first sub-board 51, and the lower edge of the fourth sub-board 54 is connected to the left edge of the first sub-board 51. The left edge of the third sub-board 53 is connected; the fifth sub-board 55 extends obliquely to the right from back to front, and the rear edge of the fifth sub-board 55 is connected to the right edge of the second sub-board 52. The front edge of the fifth sub-board 55 is connected to the right side panel 4, the upper edge of the fifth sub-board 55 is connected to the right edge of the first sub-board 51, and the lower edge of the fifth sub-board 55 is connected to the right edge of the third sub-board 53. connect.

In this solution, the inner and rear panels 5 include five sub-panels, which form a tapered structure with a wide front and narrow back to more effectively reflect the heat radiation in the cooking cavity to the location of the food, thereby improving the heating of the electric oven. efficiency.

In the above technical solution, preferably, the first sub-board 51 , the second sub-board 52 , the third sub-board 53 , the fourth sub-board 54 and the fifth sub-board 55 are of an integrated structure. The connection part of the second sub-board 52, the connection part of the third sub-board 53 and the second sub-board 52, the connection part of the fourth sub-board 54 and the second sub-board 52, the connection part of the fifth sub-board 55 and the second sub-board 52 The connecting parts are creases formed by bending.

In this solution, the five sub-boards have an integrated structure, formed by punching and bending one plate, so that the production process of the inner and rear boards 5 is simple.

In the above technical solution, preferably, the first sub-board 51 , the third sub-board 53 , the fourth sub-board 54 , and the fifth sub-board 55 are respectively connected through snap-in structures.

In this solution, the four sub-boards located around the second sub-board 52 are provided with snap-in structures and are connected through the snap-in structures. This design makes the connection structure between the sub-boards simple and is conducive to improving the processing efficiency of the inner and rear panels 5. efficiency. Specifically, one of the two adjacent sub-boards may be provided with a protruding portion for engaging, and the other may be provided with a matching engaging slot.

In the above technical solution, preferably, the first sub-board 51 , the second sub-board 52 , the third sub-board 53 , the fourth sub-board 54 and the fifth sub-board 55 are welded.

As shown in Figures 1 and 2, in the above technical solution, preferably, the hot air assembly includes a motor 61, a heating fan blade 62 and an air guide 63. The air guide 63 includes a top wall and extends downward from the edge of the top wall. The side wall and the top wall are provided with connection holes. The bottom of the side wall is fixedly connected to the first sub-board 51 and the first ventilation hole 511 and the second ventilation hole 512 are covered inside. The heating fan blade 62 is installed on the air guide cover. 63 and opposite to the first ventilation hole 511 or the second ventilation hole, the motor 61 is fixedly installed on the outer surface of the top wall, and the motor shaft of the motor 61 passes through the connecting hole and is fixedly connected to the heating fan blade 62 for driving the heating fan. The leaves 62 rotate around the axis.

In this solution, the hot air assembly 6 includes a motor 61, a heating fan blade 62 and an air guide 63. The bottom of the side wall of the air guide 63 is fixedly connected to the first sub-board 51 and covers the first ventilation hole 511 and the second ventilation hole 512. Located inside, an air duct is formed between the air guide cover 63 and the first sub-board 51. The heating fan blade 62 is installed in the air guide cover 63. When the electric oven is working, the motor 61 drives the heat fan blade 62 to rotate, so that the first ventilation fan blade 62 rotates. Negative pressure is generated at the position of the air hole 511 or the second air hole 512, and the hot air in the cooking cavity is sucked into the air duct through the air hole, and then the hot air is transported along the air duct to the position of another air hole, causing the hot air to move downward and forward. direction into the cooking cavity, thereby forming hot air circulation in the cooking cavity.

Specifically, the hot air assembly 6 also includes a motor bracket, and the motor 61 is fixed on the upper surface of the top wall of the air guide 63 through the motor bracket.

In the above technical solution, preferably, the hot air assembly 6 also has cooling fan blades 64 which are fixedly connected to the motor shaft and located outside the air guide 63 for blowing air to the motor 61 driven by the motor shaft.

In this solution, the hot air assembly 6 also includes a cooling fan blade 64. When the hot air assembly 6 is working, the cooling fan blade 64 moves under the drive of the motor shaft, blows air to the motor 61, and dissipates heat for the motor 61 and the installation space where the motor 61 is located.

In any of the above technical solutions, preferably, the rear panel further includes a rear panel outer cover 7 , the rear panel outer cover 7 is located behind the inner rear panel 5 , and the hot air component 6 is located between the inner rear panel 5 and the rear panel outer cover 7 .

In this solution, a rear panel outer cover 7 is installed behind the inner rear panel 5. The rear panel outer cover 7 covers the hot air component 6 inside to protect the hot air component 6.

In the description of the present invention, the terms "upper", "lower", "top", "bottom", "front", "back", "left", "right", etc. indicate an orientation or positional relationship based on the drawings. The orientation or positional relationship shown is only to facilitate the description of the present invention and simplify the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of the present invention. limits.

In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in the invention. in at least one embodiment or example. In this specification, schematic representations 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 any one or more embodiments or examples.

In the description of the present invention, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. Unless otherwise explicitly stipulated and limited; the terms "connection", "installation", "fixing", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; It can be directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. An electric oven, comprising: a cooking cavity, a heating pipe installed in the cooking cavity, and a hot air component installed on the outer surface of the cooking cavity. The cooking cavity includes a top plate, a bottom plate, and a left side plate. , right side panel and rear panel, characterized in that, The rear panel includes an inner rear panel, and the edges of the inner rear panel are respectively connected to the top panel, the bottom panel, the left side panel, and the right side panel. The first sub-board extends obliquely. The front edge of the first sub-board is connected to the top board. The first sub-board is provided with first ventilation holes and second ventilation holes near the left and right ends respectively. The hot air A component is installed on the outer surface of the first sub-board for supplying air to one of the first vent hole and the second vent hole, and is used for supplying air to one of the first vent hole and the second vent hole. The other air hole inhales air to form hot air circulation in the cooking cavity; The inner rear panel further includes a second sub-panel extending downward from the rear edge of the first sub-panel; The inner rear panel also includes a third sub-panel, the third sub-panel extends downwardly from the back to the front, and the rear edge of the third sub-panel is connected to the lower edge of the second sub-panel. The front edges of the three sub-boards are connected to the base plate. 2. The electric oven according to claim 1, wherein the inner rear panel further includes: The fourth sub-board extends obliquely to the left from back to front, and the rear edge of the fourth sub-board is connected to the left edge of the second sub-board, and the front edge of the fourth sub-board is connected to the left edge of the fourth sub-board. The left side panel is connected, the upper edge of the fourth sub-board is connected to the left edge of the first sub-board, and the lower edge of the fourth sub-board is connected to the left edge of the third sub-board; The fifth sub-board extends obliquely to the right from back to front, and the rear edge of the fifth sub-board is connected to the right edge of the second sub-board, and the front edge of the fifth sub-board is connected to the right edge of the fifth sub-board. The right side board is connected, the upper edge of the fifth sub-board is connected to the right edge of the first sub-board, and the lower edge of the fifth sub-board is connected to the right edge of the third sub-board. 3. The electric oven according to claim 2, characterized in that, The first sub-board, the second sub-board, the third sub-board, the fourth sub-board and the fifth sub-board are of an integrated structure, and the first sub-board and the second sub-board are The connection part of the sub-board, the connection part of the third sub-board and the second sub-board, the connection part of the fourth sub-board and the second sub-board, the fifth sub-board and the third sub-board The connection parts of the two sub-boards are creases formed by bending. 4. The electric oven according to claim 3, characterized in that, The first sub-board, the third sub-board, the fourth sub-board, and the fifth sub-board are respectively connected through a snap-in structure. 5. The electric oven according to claim 2, characterized in that, The first sub-board, the second sub-board, the third sub-board, the fourth sub-board and the fifth sub-board are welded. 6. The electric oven according to claim 1, characterized in that, The hot air assembly includes a motor, a heating fan blade and an air guide hood. The air guide hood includes a top wall and side walls extending downward from the edge of the top wall. The top wall is provided with a connection hole, and the The bottom of the side wall is fixedly connected to the first sub-board and has the first ventilation hole and the second ventilation hole cover inside. The heating fan blade is installed in the air guide cover and connected with the third ventilation hole. A ventilation hole or the second ventilation hole is opposite, the motor is fixedly installed on the outer surface of the top wall, and the motor shaft of the motor passes through the connection hole and is fixedly connected to the heating fan blade. To drive the heat fan blade to rotate around the axis. 7. The electric oven according to claim 6, characterized in that, The hot air assembly also has cooling fan blades, which are fixedly connected to the motor shaft and located outside the air guide hood, and are used to blow air to the motor driven by the motor shaft. 8. The electric oven according to any one of claims 1 to 7, characterized in that, The rear panel also includes a rear panel outer cover, the rear panel outer cover is located behind the inner rear panel, and the hot air component is located between the inner rear panel and the rear panel outer cover.