Electric pizza oven with multi-air channel heat dissipation function

Abstract

An electric pizza oven with multi-channel heat dissipation function includes an outer shell, a rear plate covered at the rear end of the outer shell, and a bottom plate covered at the bottom of the outer shell. The outer shell, rear plate, and bottom plate together form a cavity, in which an inner liner is embedded. An upper air duct, a side air duct, a lower air duct, and a rear air duct are formed between the outer periphery of the inner liner and the inner wall of the cavity. A fan is installed below the rear air duct. The upper, side, lower, and rear air ducts are interconnected. A guide plate is provided above the fan, inclined towards the lower and rear air ducts. The beneficial effects of this invention are: a single fan can ventilate multiple air ducts, achieving all-round heat dissipation and cooling of the electric pizza oven shell, resulting in ideal heat dissipation and improved product safety.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically an electric pizza oven with multi-channel heat dissipation function. Background Technology

[0002] Electric pizza ovens bake pizzas by using heating elements inside a sealed cavity to rapidly raise the cavity temperature. To achieve this high-temperature baking environment, electric pizza ovens typically have high heating power, concentrating heat within the cavity. During operation, the immense heat from the inner cavity inevitably transfers to the outer shell through heat conduction, causing the outer surface temperature to rise. Currently, most electric pizza ovens rely on passive natural cooling through a few ventilation holes on the outer shell, or forced air cooling via a localized fan. This is inefficient for ovens that continuously generate high heat, resulting in significant heat accumulation on the outer shell. This causes a rapid increase in temperature on the top and sides of the outer shell, posing a serious risk of burns to users during daily use. Furthermore, excessively high outer shell temperatures can lead to deformation of the outer shell material or discoloration of the coating after prolonged use, severely impacting the product's lifespan and aesthetics, and reducing the overall user experience.

[0003] Furthermore, in addition to the heating elements, the interior of an electric pizza oven also houses a main control circuit board for control, a rotary motor for driving, and other components. These components are often installed inside the oven cavity. When the electric pizza oven works for a long time, the heat transferred from the inner cavity and the heat generated by the components themselves will continuously accumulate, causing the working environment to rise continuously. The high-temperature working environment accelerates the aging of components, leading to performance degradation and reducing the reliability and service life of the electric pizza oven. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an electric pizza oven with a simple structure, low manufacturing cost, multiple air ducts to achieve all-round heat dissipation and cooling with a single fan, ideal cold air diversion and heat dissipation effect, improved safety, and extended service life.

[0005] The purpose of this utility model is achieved by the following method: an electric pizza oven with multi-channel heat dissipation function, comprising an outer shell, a rear plate covered and installed at the rear end of the outer shell, and a bottom plate covered and installed at the bottom of the outer shell, the outer shell, the rear plate and the bottom plate forming a receiving cavity, an inner liner being embedded in the receiving cavity, an upper air duct, a side air duct, a lower air duct and a rear air duct being formed between the outer periphery of the inner liner and the inner peripheral wall of the receiving cavity, a fan device being installed below the rear air duct; the upper air duct, the side air duct, the lower air duct and the rear air duct being interconnected; a guide plate is provided above the fan device, the guide plate being inclined toward the lower air duct and the rear air duct.

[0006] The outer casing has side air outlets on both sides, and the side air outlets are connected to the side air ducts.

[0007] An upper air outlet is provided on the top of the outer casing, and the upper air outlet is connected to the upper air duct.

[0008] The side and top air outlets are designed with louvers.

[0009] A lower air outlet is provided at the front of the base plate, and the lower air outlet is connected to the lower air duct; an air inlet is provided at the rear of the base plate, and the fan device is located above the air inlet.

[0010] Two guide vanes are symmetrically arranged and are inclined in a V-shape; the guide vanes are connected horizontally above the fan device via mounting bases, and a gap is left between the guide vanes and the fan device.

[0011] The fan device includes a cooling fan and a casing covering the cooling fan, with the upper and lower ends of the casing being open.

[0012] A rotary motor is installed in the downdraft duct, and a main control circuit board is installed in the rear duct.

[0013] A heat insulation board is attached to the outer wall of the inner liner, and the heat insulation board forms one side boundary facing the rear air duct.

[0014] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0015] 2. A single fan can ventilate multiple air ducts, enabling all-round heat dissipation and cooling of the electric pizza oven's outer shell. The heat dissipation effect is ideal, improving the product's safety.

[0016] 3. The deflector plate is located above the fan unit to effectively divert cold air and improve heat dissipation efficiency.

[0017] 4. The main control circuit board and rotary motor are installed in the air duct, where cold air can continuously dissipate heat and cool them down, reducing product costs and improving the reliability and service life of components.

[0018] 5. The heat insulation plate forms the boundary of the rear air duct, effectively blocking the heat of the inner tank and optimizing the heat dissipation effect, further enhancing the protection of the main control circuit board and other components. Attached Figure Description

[0019] Figure 1 This is a rendering of the final assembly of this utility model.

[0020] Figure 2 This is a schematic diagram of the wind direction and flow state in this utility model.

[0021] Figure 3 This is a schematic diagram of the wind direction and flow state in this utility model.

[0022] Figure 4 This is a schematic diagram of the outer shell of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the base plate in this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the guide plate in this utility model. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings. An electric pizza oven with multi-channel heat dissipation function includes a shell 1, a rear plate 2 covering the rear end of the shell 1, and a bottom plate 3 covering the bottom of the shell 1. The shell 1, rear plate 2, and bottom plate 3 enclose a receiving cavity, in which an inner liner 4 is embedded. An upper air duct 61, a side air duct 62, a lower air duct 63, and a rear air duct 64 are formed between the outer periphery of the inner liner 4 and the inner peripheral wall of the receiving cavity. A fan device 5 is installed below the rear air duct 64. The upper air duct 61, side air duct 62, lower air duct 63, and rear air duct 64 are interconnected. A guide plate 7 is provided above the fan device 5, and the guide plate 7 is inclined towards the lower air duct 63 and the rear air duct 64.

[0026] like Figure 1 , Figure 2 , Figure 3As shown: In the structure of the electric pizza oven in this case, a cavity is formed by the enclosure of the outer shell, the rear plate, and the bottom plate. An upper air duct, a side air duct, a lower air duct, and a rear air duct are formed between the outer peripheral wall of the inner liner and the inner peripheral wall of the cavity. When the fan device located in the rear air duct is activated, cold air from the outside passes through the bottom plate into the rear air duct and continues to be blown upwards. It is then diverted by a guide plate located above the fan device. Because the guide plate is inclined towards the lower and rear air ducts, the cold air is efficiently distributed to them. Since the upper, side, lower, and rear air ducts are interconnected, the cold air circulates throughout the space between the inner liner and the outer shell, forming a continuously flowing forced-air cooling layer surrounding the high-temperature inner liner. Unlike traditional point-to-point air-cooling paths with a single upward flow path, this multi-channel design provides comprehensive and continuous cooling to the entire inner liner. This ensures that cold air reaches the area flowing inside the outer shell, avoiding uneven heat dissipation and localized high temperatures common in existing technologies. This results in high heat dissipation efficiency and improved safety for the electric pizza oven. Furthermore, the flow-diverting design of the baffles ensures that airflow passively reaches the areas most in need of cooling, effectively dissipating heat and cooling the entire electric pizza oven.

[0027] Side air outlets 11 are provided on both sides of the outer casing 1, and the side air outlets 11 are connected to the side air ducts 62. An upper air outlet 12 is provided on the top of the outer casing 1, and the upper air outlet 12 is connected to the upper air duct 61.

[0028] like Figure 4 As shown: Side air vents are provided on both sides of the outer shell, and the side air vents are connected to the side air ducts; an upper air vent is provided on the top of the outer shell, and the upper air vent is connected to the upper air duct. When the fan is started, it drives cold air through the side air ducts and the upper air duct to absorb the heat of the inner liner and the outer shell. This air carrying heat is then smoothly discharged from the side air vents and the upper air vent to the outside of the electric pizza oven, providing an exhaust channel for the side and top air, ensuring that the internal air can continuously flow and be renewed, avoiding the accumulation of hot air inside, thereby significantly improving the cooling effect on the sides and top of the outer shell, effectively reducing the temperature, and improving the safety of product use.

[0029] The side air outlet 11 and the upper air outlet 12 are designed in a louvered manner. Figure 4As shown, the side and top air vents are designed in a louvered shape. This allows air to flow freely between the louvers and guides the direction of the exhaust air, preventing it from blowing directly onto the user and optimizing airflow. Secondly, the louvers are typically slanted slats with small gaps, effectively preventing accidental extension of the user or the ingress of foreign objects, thus protecting user safety and preventing damage to internal components, improving safety. Furthermore, compared to conventional simple perforated slot designs, the louvered structure is more aesthetically pleasing and enhances the product's overall appearance.

[0030] A lower air outlet 31 is provided at the front of the base plate 3, and the lower air outlet 31 is connected to the lower air duct 63; an air inlet 32 ​​is provided at the rear of the base plate 3, and the fan device 5 is located above the air inlet 32.

[0031] like Figure 5 As shown: the lower air outlet is located at the front of the base plate, and the air inlet is located at the rear of the base plate. The fan is installed above the air inlet. The fan directly draws in cold air from the air inlet. The cold air is distributed to the lower air duct by the guide plate. The rear-in, front-out airflow path can continuously draw in cold air from the rear of the equipment and exhaust it from the front, ensuring that the bottom of the electric pizza oven is fully cooled and completing the closed loop of airflow circulation.

[0032] Two guide vanes 7 are symmetrically arranged, and the two guide vanes 7 are inclined in a V-shape; the guide vanes 7 are connected horizontally above the fan device 5 via mounting bases 71, and a gap is left between the guide vanes 7 and the fan device 5. Figure 6 As shown: The guide vanes are V-shaped and symmetrically arranged facing the lower and rear air ducts, with a certain gap between them and the fan unit. When the cold air drawn in by the fan unit generates a vertical airflow, the V-shaped guide vanes will evenly and symmetrically distribute the airflow. Compared with a single inclined vane, the V-shaped guide vane has a more stable and efficient airflow distribution effect, achieving a multi-purpose cooling effect. Furthermore, the guide vanes are assembled using mounting brackets, resulting in a simple structure, low manufacturing cost, and easy and quick installation.

[0033] The fan device 5 includes a cooling fan 51 and a fan casing 52 covering the cooling fan 51, with the upper and lower ends of the fan casing 52 being open.

[0034] The structure of the fan unit includes a cooling fan and a casing covering the cooling fan. The casing has openings at both the top and bottom. The lower opening of the casing is connected to the air inlet, and the upper opening is connected to the air duct. The casing serves to gather and guide cold air, improve the working efficiency of the cooling fan, and generate airflow with higher wind speed and stronger wind pressure. This makes the entire air-cooling system more powerful and the heat dissipation effect more ideal.

[0035] A rotary motor 8 is installed in the lower air duct 63, and a main control circuit board 9 is installed in the rear air duct 64. The rotary motor and the main control circuit board are respectively installed in the lower air duct and the rear air duct, which are located in the necessary path of the cooling airflow. The cold air will continuously dissipate heat and cool the rotary motor and the main control circuit board, eliminating the need to set up separate cooling fans for these components, significantly saving material costs and assembly operations, and improving the working stability and lifespan of the above core components in high-temperature environments.

[0036] A heat insulation plate 41 is attached to the outer wall of the inner liner 4, forming a boundary on one side facing the rear air duct 64. The heat insulation plate, acting as a thermal barrier, directly prevents heat generated by the inner liner from entering the rear air duct through thermal radiation and conduction, reducing the burden on the cold air and thus maintaining a lower air temperature. This significantly reduces the temperature of the main control circuit board located in the rear air duct, further ensuring the safe operation of the main control circuit board.

[0037] In summary: In the structure of an electric pizza oven, the outer shell, rear plate, and bottom plate form a cavity. Between the outer wall of the inner liner and the inner wall of the cavity, there are upper, side, lower, and rear air ducts. The fan located in the rear air duct is activated.

[0038] Outside cold air passes through the bottom plate into the rear air duct and continues to be blown upwards. It is then divided by a guide plate positioned above the fan unit. Because this guide plate is V-shaped and angled towards the lower and rear air ducts, the vertically rising cold air is efficiently distributed to these ducts. Since the upper, side, lower, and rear air ducts are interconnected, the cold air circulates throughout the space between the inner and outer shells, forming a continuously flowing forced-air cooling layer surrounding the high-temperature inner shell. The core component, the rotary motor, is installed in the lower air duct, while the main control circuit board is installed in the rear air duct. The cold air continuously dissipates heat from the core component and continues to flow, absorbing heat transferred from the inner shell in all directions, thus cooling the entire outer shell. The air that has absorbed heat is discharged through the air outlets distributed in various air ducts. The hot air at the top is discharged through the upper air outlet, the hot air on both sides is discharged through the side air outlets, and the hot air at the bottom is discharged through the lower air outlet, thus completing a complete heat dissipation and cooling cycle.

[0039] Unlike traditional point-to-point air-cooling paths with a single upward flow path, this multi-channel design provides comprehensive and continuous cooling to the entire inner liner. This ensures that cold air reaches the area flowing inside the outer shell, avoiding uneven heat dissipation and localized high temperatures common in existing technologies. This results in high heat dissipation efficiency and improved safety for the electric pizza oven. Furthermore, the flow-diverting design of the baffles ensures that airflow passively reaches the areas most in need of cooling, effectively dissipating heat and cooling the entire electric pizza oven.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An electric pizza oven with multi-channel heat dissipation function, characterized in that: It includes an outer shell (1), a rear plate (2) is installed on the rear end of the outer shell (1), and a bottom plate (3) is installed on the bottom of the outer shell (1). The outer shell (1), the rear plate (2) and the bottom plate (3) enclose a cavity. An inner liner (4) is embedded in the cavity. An upper air duct (61), a side air duct (62), a lower air duct (63) and a rear air duct (64) are formed between the outer periphery of the inner liner (4) and the inner peripheral wall of the cavity. A fan device (5) is installed below the rear air duct (64). The upper air duct (61), the side air duct (62), the lower air duct (63) and the rear air duct (64) are interconnected. A guide plate (7) is provided above the fan device (5), and the guide plate (7) is inclined toward the downdraft duct (63) and the rear duct (64).

2. The electric pizza oven with multi-channel heat dissipation function according to claim 1, characterized in that: The outer casing (1) is provided with side air outlets (11) on both sides, and the side air outlets (11) are connected to the side air duct (62).

3. An electric pizza oven with multi-channel heat dissipation function according to claim 2, characterized in that: An upper air outlet (12) is provided on the upper part of the outer casing (1), and the upper air outlet (12) is connected to the upper air duct (61).

4. An electric pizza oven with multi-channel heat dissipation function according to claim 3, characterized in that: The side air outlet (11) and the top air outlet (12) are designed in the shape of louvers.

5. An electric pizza oven with multi-channel heat dissipation function according to claim 1, characterized in that: The bottom plate (3) is provided with a lower air outlet (31) at the front, and the lower air outlet (31) is connected to the lower air duct (63); the bottom plate (3) is provided with an air inlet (32) at the rear, and the fan device (5) is located above the air inlet (32).

6. An electric pizza oven with multi-channel heat dissipation function according to claim 1, characterized in that: Two guide plates (7) are symmetrically arranged, and the two guide plates (7) are inclined in a V shape; the guide plates (7) are connected across the top of the fan device (5) through the mounting base (71), and the guide plates (7) and the fan device (5) are left empty.

7. An electric pizza oven with multi-channel heat dissipation function according to claim 1, characterized in that: The fan device (5) includes a cooling fan (51) and a casing (52) covering the cooling fan (51), with the upper and lower ends of the casing (52) being open.

8. An electric pizza oven with multi-channel heat dissipation function according to claim 1, characterized in that: A rotary motor (8) is installed in the downdraft duct (63), and a main control circuit board (9) is installed in the rear duct (64).

9. An electric pizza oven with multi-channel heat dissipation function according to claim 1, characterized in that: A heat insulation plate (41) is attached to the outer wall of the inner liner (4), and the heat insulation plate (41) forms a side boundary facing the rear air duct (64).

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