An oven with a heating assembly built-in

Abstract

The utility model relates to the technical field of cooking equipment more specifically, relate to a kind of oven with built-in heating assembly, including fixed plate, air circulation component, heating assembly, baffle and cooking cavity, the baffle is arranged in the cooking cavity back, the fixed plate is connected with the baffle, the air circulation component and heating assembly are both located between the fixed plate and the baffle, the heating assembly is arranged in the air circulation component outer periphery or inner periphery, the air circulation component is fixed on the fixed plate.The utility model avoids that user directly contacts heating assembly in cooking cavity, it is convenient to clean cooking cavity, reduces the cleaning dead angle due to the block of heating assembly, eliminates the scald risk when taking out food material, while increase the cooking cavity volume, suitable for multiple layers of food material simultaneous cooking.

Description

Technical Field

[0001] This utility model relates to the technical field of cooking equipment, and more specifically, to an oven with a built-in heating element. Background Technology

[0002] With the improvement of modern living standards, ovens have become an indispensable cooking appliance in both home and commercial settings. They achieve even heating of food through hot air circulation technology and are widely used in baking, grilling, and air frying. Traditional oven heating systems mostly rely on resistance wire or tube heating elements, which transfer heat through radiation or forced convection to bake the food in the cooking cavity.

[0003] In existing technologies, such as Chinese patent CN215533744U, a guide impeller and an air fryer oven using the same are disclosed. The guide impeller includes a turntable; blades, which are segmented blades with several blades arranged at intervals around one end face of the turntable and around the axis of the turntable; the air fryer oven includes a main body with a cooking chamber for holding food, a first air duct on one side of the cooking chamber, and the air duct connecting to the cooking chamber; a heating device disposed in the cooking chamber to provide heat energy for cooking food in the cooking chamber; a guide impeller disposed in the first air duct; and a drive motor disposed outside the air duct, with the drive motor's shaft passing through the first air duct and connected to the guide impeller, the drive motor driving the guide impeller to rotate to guide the airflow. However, in this solution, the heating device is fixed to the top of the cooking chamber, and the external heating device increases the difficulty of cleaning the cooking chamber and also poses a risk of burns. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies where external heating devices affect the cleaning of the cooking cavity and pose a risk of burns. It provides an oven with a built-in heating element, which hides the heating element, facilitates cleaning of the cooking cavity, avoids burns to users, and increases the volume of the cooking cavity.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An oven with a built-in heating element is provided, including a fixed plate, a wind circulation component, a heating element, a partition, and a cooking cavity. The partition is disposed on the back of the cooking cavity, and the fixed plate is connected to the partition. The wind circulation component and the heating element are both disposed between the fixed plate and the partition. The heating element is disposed on the outer or inner periphery of the wind circulation component, and the wind circulation component is fixed on the fixed plate.

[0006] This oven utilizes a mounting plate to provide an installation position for the air circulation component. The air circulation component and heating element are installed between a partition and the mounting plate. The heating element is installed on the outer or inner circumference of the air circulation component, thus concealing it. During cooking, the air circulation component rotates, driving air movement, which, after passing through the heating element, forms hot air circulating into the cooking cavity. The built-in heating element prevents direct contact between the user and the heating element within the cooking cavity, facilitating cleaning and reducing hard-to-clean areas caused by the heating element. It also eliminates the risk of burns when removing food and increases the volume of the cooking cavity, making it suitable for cooking multiple layers of food simultaneously.

[0007] Furthermore, the air circulation assembly includes a fan wheel and a drive motor, with the fan wheel connected to the drive motor. The diameter of the fan wheel is 1 / 2 to 4 / 5 of the length of the partition. By increasing the fan wheel diameter, a larger air volume can be generated at the same rotation speed, increasing the air pressure inside the cooking cavity, accelerating the circulation speed of hot air within the cooking cavity, and shortening the preheating time. At the same time, the high air pressure generated by the large fan wheel structure can penetrate multiple layers of grill racks, ensuring that the food on each layer is heated evenly and avoiding the problem of "burnt on top and raw on the bottom" in traditional ovens.

[0008] Furthermore, the partition has an air inlet at its center and air outlets around its perimeter, forming a circulating airflow path that uses return air to heat the cooking cavity. Hot air flows into the cooking cavity from the air outlets around the partition. Due to the low-pressure zone generated in the center during the rotation of the impeller, hot air flows into the impeller from the air inlet at the center of the partition, forming a complete circulating airflow path. The return air heats the cooking cavity, improving the heating uniformity of various parts of the cooking cavity.

[0009] Furthermore, the air inlet includes multiple sets of first ventilation holes arranged radially and evenly around the center of the air inlet. Airflow enters the impeller through the multiple sets of radially arranged first ventilation holes, which can improve the impeller's suction efficiency and thus increase the hot air circulation pressure.

[0010] Furthermore, the air inlet has a circular outer perimeter, and its outer diameter is the same as that of the impeller. When the air inlet is designed to be circular and its outer diameter is the same as that of the impeller, the cross-sectional area of ​​the airflow during entry perfectly matches the suction area required for the impeller's rotation, avoiding sudden changes in flow velocity or energy loss due to size mismatch.

[0011] Furthermore, the air outlet includes multiple sets of evenly arranged second ventilation holes, which are rectangular holes. These multiple sets of evenly distributed second ventilation holes around the partition ensure that the airflow generated by the impeller can flow out evenly from all sides. The rectangular holes allow the hot air to diffuse evenly in a laminar flow state, avoiding the generation of local eddies. By smoothly dispersing the airflow, the uniformity of the airflow velocity passing through the second ventilation holes is improved, increasing the uniformity of the airflow's heat distribution.

[0012] Furthermore, the second ventilation holes located at the bottom and top of the partition are rectangular holes with a length greater than their height, while the second ventilation holes located on both sides of the partition are rectangular holes with a length less than their height. The length refers to the horizontal length of the second ventilation hole, and the height refers to the vertical length of the second ventilation hole. During the rotation of the impeller, the airflow moves tangentially. By controlling the shape of the rectangular holes, the second ventilation holes do not affect the direction of the airflow passing through them, ensuring that the airflow at all positions of the partition remains consistent and improving the temperature uniformity within the cooking cavity.

[0013] Furthermore, the area of ​​the air outlet is 1 / 2 to 4 / 5 of the area of ​​the air inlet. By controlling the area of ​​the air outlet to be 1 / 2 to 4 / 5 of the area of ​​the air inlet, air is drawn in through the air inlet occupying most of the area of ​​the partition, and air is discharged through the air outlet occupying a small portion of the area around the partition. This ensures that the airflow flowing out of the air outlet is a high-speed, high-temperature airflow, which increases the wind pressure during the hot air circulation process and can reduce the cooking time by more than 30%.

[0014] Furthermore, the heating element is a spiral heating tube sleeved on the outer circumference of the impeller, and the spiral heating tube is fixed to the fixing plate. Compared with traditional straight tube or plate heating elements, the spiral structure can increase the surface area within the same volume, allowing air to fully contact the heating tube when it flows through, thus improving heat exchange efficiency. At the same time, the layout of the spiral tube surrounding the outer circumference of the impeller can save installation space.

[0015] Furthermore, the oven also includes a cooling fan, a cooling duct, and an exhaust vent. The cooling fan is positioned between the impeller and the drive motor, and the exhaust vent is located on the top of the fixed plate. The cooling duct connects the cooling fan and the exhaust vent. As the drive motor rotates the impeller, it simultaneously drives the cooling fan. The airflow generated by the cooling fan moves along the cooling duct to the top exhaust vent, thereby dissipating excess heat from the back of the impeller and the heat generated during the operation of the drive components, reducing the operating temperature of the internal components and extending the oven's lifespan.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. It avoids direct contact between the user and the heating element in the cooking cavity, making it easier to clean the cooking cavity. It reduces cleaning dead spots caused by the heating element and eliminates the risk of burns when taking out food. At the same time, it increases the volume of the cooking cavity, making it suitable for cooking multiple layers of food at the same time. 2. It achieves uniform heating in all parts of the oven, reduces the temperature difference between the upper and lower layers, and avoids localized over-burning or undercooking. 3. Avoid overheating and damage to the drive components, which helps extend service life and improve safety. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an oven with a built-in heating element; Figure 2 This is a schematic diagram of the partition structure; Figure 3 This is a partial structural diagram of the oven; Figure 4 This is a schematic diagram of the heat dissipation system.

[0018] In the attached diagram: 100, fixing plate; 200, air circulation assembly; 210, impeller; 220, drive motor; 300, heating element; 400, partition; 410, air inlet; 420, air outlet; 500, cooking cavity; 610, cooling fan; 620, cooling duct; 630, exhaust channel. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Example 1 This embodiment is a first embodiment of an oven with a built-in heating element, including a fixing plate 100, a wind circulation component 200, a heating element 300, a partition 400, and a cooking cavity 500. The partition 400 is disposed on the back of the cooking cavity 500. The fixing plate 100 is connected to the partition 400. The wind circulation component 200 and the heating element 300 are both disposed between the fixing plate 100 and the partition 400. The heating element 300 is disposed on the outer or inner periphery of the wind circulation component 200. The wind circulation component 200 is fixed on the fixing plate 100.

[0022] like Figure 1 , Figure 3 As shown, in this embodiment of the oven, the mounting plate 100 provides an installation position for the air circulation component 200. The air circulation component 200 and the heating component 300 are installed between the partition plate 400 and the mounting plate 100. The heating component 300 is installed on the outer or inner periphery of the air circulation component 200, thus concealing the heating component 300. During cooking, the air circulation component 200 rotates, driving air movement, which forms hot air circulation after passing through the heating component 300 and enters the cooking cavity 500. The built-in heating component 300 avoids direct contact between the user and the heating component 300 in the cooking cavity 500, facilitating cleaning of the cooking cavity 500, reducing cleaning dead corners caused by the heating component 300, eliminating the risk of burns when removing food, and increasing the volume of the cooking cavity 500, making it suitable for cooking multiple layers of food simultaneously.

[0023] The air circulation assembly 200 includes a fan wheel 210 and a drive motor 220. The fan wheel 210 is connected to the drive motor 220, and its diameter is 1 / 2 to 4 / 5 of the length of the partition 400. By increasing the diameter of the fan wheel 210, a larger air volume can be generated at the same rotation speed, increasing the air pressure inside the cooking cavity 500 and accelerating the circulation speed of hot air within the cooking cavity 500, thus shortening the preheating time. At the same time, the high air pressure generated by the large fan wheel 210 structure can penetrate multiple layers of grill racks, ensuring that the food on each layer is heated evenly and avoiding the problem of "burnt on top and raw on the bottom" in traditional ovens.

[0024] The partition 400 has an air inlet 410 at its center and air outlets 420 around its perimeter. The air inlet 410 and air outlets 420 form a circulating air path that uses return air to heat the cooking cavity 500. Hot air flows into the cooking cavity 500 from the air outlets 420 around the partition 400. Due to the low-pressure zone generated in the center of the impeller 210 during rotation, hot air flows into the impeller 210 from the air inlet 410 at the center of the partition 400, forming a complete circulating air path. This return air heats the cooking cavity 500, improving the heating uniformity of all parts of the cooking cavity 500.

[0025] The area of ​​the air outlet 420 is 1 / 2 to 4 / 5 of the area of ​​the air inlet 410. By controlling the area of ​​the air outlet 420 to be 1 / 2 to 4 / 5 of the area of ​​the air inlet 410, air is drawn in through the air inlet 410, which occupies most of the area of ​​the partition 400, and air is discharged through the air outlet 420, which occupies a small area around the partition 400. This ensures that the airflow flowing out of the air outlet 420 is a high-speed, high-temperature airflow, which increases the wind pressure during the hot air circulation process and reduces the time required for the cooking process.

[0026] Example 2 This embodiment is a second embodiment of an oven with a built-in heating element. This embodiment is similar to the first embodiment, except that, as shown in the example... Figure 2As shown, the air inlet 410 includes multiple sets of first ventilation holes arranged radially and evenly around the center of the air inlet 410. Airflow enters the impeller 210 through the multiple sets of radially arranged first ventilation holes, which can improve the air intake efficiency of the impeller 210, thereby increasing the hot air circulation pressure.

[0027] The air inlet 410 has a circular outer circumference, and its outer diameter is the same as that of the impeller 210. When the air inlet 410 is designed to be circular and its outer diameter is the same as that of the impeller 210, the cross-sectional area of ​​the airflow when it enters is perfectly matched with the suction area required for the impeller 210 to rotate, thus avoiding sudden changes in flow velocity or energy loss due to size mismatch.

[0028] Example 3 This embodiment is the third embodiment of an oven with a built-in heating element. This embodiment is similar to Embodiment 1, except that the air outlet 420 includes multiple sets of evenly arranged second ventilation holes, which are rectangular holes. These multiple sets of evenly distributed second ventilation holes around the partition 400 ensure that the airflow generated by the impeller 210 can flow out evenly from all sides. Figure 2 As shown, the rectangular holes in this embodiment are rounded around all four sides, which allows the hot air to diffuse evenly in a laminar flow state, avoids the generation of local eddies, and disperses the airflow through a smooth transition, thereby improving the consistency of the airflow velocity passing through the second ventilation hole and increasing the uniformity of the heat distribution of the airflow.

[0029] The second ventilation holes located at the bottom and top of the partition 400 are rectangular holes with a length greater than their height. The second ventilation holes located on both sides of the partition 400 are rectangular holes with a length less than their height. The length refers to the horizontal length of the second ventilation hole, and the height refers to the vertical length of the second ventilation hole. During the rotation of the impeller 210, the airflow moves tangentially. By controlling the shape of the rectangular holes, the second ventilation holes do not affect the direction of the airflow passing through them, ensuring that the airflow at all positions of the partition 400 is consistent and improving the temperature uniformity within the cooking cavity 500.

[0030] Example 4 This embodiment is the fourth embodiment of an oven with a built-in heating element. This embodiment is similar to Embodiment 1, except that, as... Figure 1 , Figure 3 As shown, the heating element 300 is a spiral heating tube sleeved on the outer periphery of the impeller 210, and the spiral heating tube is fixed on the fixing plate 100. Compared with traditional straight tube or plate heating elements, the spiral structure can increase the surface area in the same volume, allowing the air to fully contact the heating tube when it flows through, thereby improving the heat exchange efficiency. At the same time, the layout of the spiral tube surrounding the outer periphery of the impeller 210 can save installation space.

[0031] If the gap between adjacent coils of the spiral heating element is too small, it will increase airflow resistance, leading to increased power consumption of the impeller 210; if the gap is too large, the contact time between the airflow and the heating element will be insufficient. In actual assembly, the gap between the spiral heating elements can be selected according to the heating efficiency requirements to balance airflow resistance and heat conduction needs, ensuring that it is neither too dense and obstructed, nor too wide and unable to heat sufficiently. A uniformly distributed spiral heating element ensures that the airflow is heated evenly between the spiral elements, improving the uniformity of the outlet air temperature, making it particularly suitable for simultaneous baking of multiple layers of food.

[0032] Example 5 This embodiment is the fifth embodiment of an oven with a built-in heating element. This embodiment is similar to Embodiment 1, except that the oven further includes a cooling fan 610, a cooling duct 620, and an exhaust duct 630. The cooling fan 610 is disposed between the impeller 210 and the drive motor 220, the exhaust duct 630 is disposed on the top of the fixing plate 100, and the cooling duct 620 connects the cooling fan 610 and the exhaust duct 630. Figure 4 As shown, in this embodiment, the heat dissipation duct 620 is shaped like a centrifugal duct and is mounted on the fixed plate 100. The cooling fan 610 is fixed at the center of the heat dissipation duct 620. During the rotation of the impeller 210 driven by the drive motor 220, the cooling fan 610 is simultaneously driven to rotate. The airflow generated by the cooling fan 610 moves along the heat dissipation duct 620 to the top exhaust slot 630, thereby dissipating excess heat from the back of the impeller 210 and the heat generated during the operation of the drive components, reducing the operating temperature of the internal components and extending the service life of the oven.

[0033] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An oven with a built-in heating element, characterized in that, The device includes a fixed plate (100), a wind circulation assembly (200), a heating assembly (300), a partition (400), and a cooking cavity (500). The partition (400) is disposed on the back of the cooking cavity (500). The fixed plate (100) is connected to the partition (400). The wind circulation assembly (200) and the heating assembly (300) are both disposed between the fixed plate (100) and the partition (400). The heating assembly (300) is disposed on the outer or inner periphery of the wind circulation assembly (200). The wind circulation assembly (200) is fixed on the fixed plate (100).

2. The oven with a built-in heating element according to claim 1, characterized in that, The air circulation assembly (200) includes a wind turbine (210) and a drive motor (220). The wind turbine (210) is connected to the drive motor (220), and the diameter of the wind turbine (210) is 1 / 2 to 4 / 5 of the width of the partition (400).

3. The oven with a built-in heating element according to claim 2, characterized in that, The partition (400) has an air inlet (410) at its center and an air outlet (420) around its perimeter. The air inlet (410) and the air outlet (420) form a circulating air path that uses return air to heat the cooking cavity (500).

4. The oven with a built-in heating element according to claim 3, characterized in that, The air inlet (410) includes multiple sets of first ventilation holes arranged radially and uniformly around the center of the air inlet (410).

5. The oven with a built-in heating element according to claim 4, characterized in that, The air inlet (410) has a circular outer circumference, and the outer diameter of the air inlet (410) is the same as the diameter of the impeller (210).

6. The oven with a built-in heating element according to claim 3, characterized in that, The air outlet (420) includes multiple sets of second ventilation holes evenly arranged around the partition (400), and the second ventilation holes are rectangular holes.

7. The oven with a built-in heating element according to claim 6, characterized in that, The second ventilation holes at the bottom and top of the partition (400) are rectangular holes with a length greater than their height, while the second ventilation holes on both sides of the partition (400) are rectangular holes with a length less than their height.

8. The oven with a built-in heating element according to claim 3, characterized in that, The area of ​​the air outlet (420) is 1 / 2 to 4 / 5 of the area of ​​the air inlet (410).

9. The oven with a built-in heating element according to claim 2, characterized in that, The heating element (300) is a spiral heating tube sleeved on the outer periphery of the impeller (210), and the spiral heating tube is fixed on the fixing plate (100).

10. The oven with a built-in heating element according to any one of claims 2 to 9, characterized in that, The oven also includes a cooling fan (610), a cooling duct (620), and an exhaust duct (630). The cooling fan (610) is disposed between the impeller (210) and the drive motor (220). The exhaust duct (630) is disposed on the top of the fixed plate (100). The cooling duct (620) connects the cooling fan (610) and the exhaust duct (630).

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