Hot air circulating device and oven

Abstract

The application relates to a hot air circulating device and an oven. The hot air circulating device comprises a shell, a heating component and a power mechanism. The shell has a mounting surface, and a circulating air cavity, an air inlet channel and an air outlet channel communicated with the circulating air cavity are arranged in the shell. The heating component is connected with the shell and is configured to heat the gas in the circulating air cavity. At least part of the power mechanism is arranged in the circulating air cavity, and the power mechanism is configured to provide power to make the gas enter the circulating air cavity along the air inlet channel and make the gas be discharged along the air outlet channel. The air outlet channel is inclined to the mounting surface, so that the hot air in the circulating air cavity is obliquely discharged from the air outlet. The hot air circulating device can effectively circulate and blow hot air into the oven to make the food evenly heated.

Description

Technical Field

[0001] This application relates to the field of kitchenware technology, and in particular to hot air circulation devices and ovens. Background Technology

[0002] Most commercially available electric ovens use hot air circulation technology to heat food. In this technology, the airflow from the hot air circulation vent is typically direct, blowing hot air directly at the food. However, this method has several drawbacks: First, the hot air's flow path inside the oven is relatively simple, making it difficult to evenly cover all parts of the food, resulting in uneven heating. For example, when baking large or irregularly shaped foods, the parts near the air vent are prone to burning, while those further away may remain uncooked. Second, the direct airflow can create localized high and low temperature zones within the oven, preventing even heat distribution and severely impacting baking results, reducing food quality, and failing to meet consumers' demands for high-quality baked goods. Utility Model Content

[0003] The first technical problem solved by this invention is to provide a hot air circulation device that can effectively circulate hot air into the oven to ensure that food is heated evenly.

[0004] The second technical problem solved by this invention is to provide an oven that can effectively bake food evenly.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A hot air circulation device, the hot air circulation device comprising:

[0007] The housing has a mounting surface, and the housing has a circulating air cavity inside as well as an air inlet channel and an air outlet channel communicating with the circulating air cavity. The air outlet channel has an air outlet at one end away from the circulating air cavity.

[0008] A heating element, connected to the housing, configured to heat gas within the circulating air chamber; and

[0009] A power mechanism, at least a portion of which is disposed within the circulating air chamber, is configured to provide power to allow gas to enter the circulating air chamber along the air inlet channel and to allow the gas to exit along the air outlet channel.

[0010] The air outlet channel is inclined to the mounting surface so that the hot air in the circulating air cavity is discharged obliquely from the air outlet.

[0011] The hot air circulation device of this invention offers several advantages over the prior art: It can be mounted on the side of the oven via a mounting surface, thereby supplying hot air into the oven's inner cavity. Furthermore, because the air outlet is inclined to the mounting surface, the hot air in the circulation chamber is guided by the inclined surface of the outlet and blown obliquely into the inner cavity, flowing along the inner wall of the cavity and contacting different parts of the food within. This ensures that the hot air evenly covers all parts of the food, resulting in a more uniform temperature throughout the inner cavity. This leads to more even heating of the food, improving baking performance, effectively preventing a decline in food quality, and achieving high baking efficiency with low energy consumption.

[0012] In one embodiment, the power mechanism includes a first central axis along the Y direction, a second central axis along the Z direction, and a third central axis along the X direction. The air outlet duct has a first air guide and a second air guide to change the discharge direction of the hot air. Along a direction away from the second central axis, the distance between the first air guide and the first central axis gradually decreases. Along a direction away from the third central axis, the distance between the second air guide and the mounting surface gradually decreases. The X direction is perpendicular to the mounting surface, the Y direction is perpendicular to the X direction and parallel to the mounting surface, and the Z direction is perpendicular to both the X and Y directions. By specially designing the tilt angle of the air outlet duct, the hot air within the duct can be discharged at a specific angle, facilitating the supply of swirling hot air to the inner cavity of the oven, thereby ensuring even baking of the food.

[0013] In one embodiment, the housing includes a first outer shell and a second outer shell. A portion of the second outer shell is recessed away from the first outer shell, such that when the first outer shell and the second outer shell are connected, they form the circulating air cavity, the air inlet channel, and the air outlet channel. The second outer shell has a second sidewall, a third sidewall, and a fourth sidewall connected in sequence at the recessed position of the air outlet channel. The third sidewall is disposed opposite to the first outer shell, and the second sidewall and the fourth sidewall are disposed opposite to each other. The distance between the second sidewall and the first central axis is greater than the distance between the fourth sidewall and the first central axis. The third sidewall is inclined to the mounting surface, and the distance between the third sidewall and the first outer shell gradually decreases in the direction away from the third central axis, thereby forming the second air guide portion. The second sidewall is inclined to the XY plane, and the distance between the second sidewall and the fourth sidewall gradually decreases in the direction away from the second central axis, thereby forming the first air guide portion.

[0014] In one embodiment, the angle α between the second sidewall and the XY plane is within the range of 10°-45°; and / or the angle β between the third sidewall and the mounting surface is within the range of 10°-50°; wherein the XY plane is a plane parallel to the X and Y directions. Both the angle α and angle β formed by the air outlet channel are acute angles, thus satisfying the inclined design requirements of the air outlet channel, thereby creating a more reasonable flow path for the hot air in the oven, further facilitating the formation of a vortex of hot air. Furthermore, within the aforementioned suitable angle range, the hot air discharged from the air outlet channel is more stable, and the hot air can flow over the food surface at an appropriate speed and angle. This avoids uneven heating caused by hot air blowing directly onto the food surface, and also avoids the problem of insufficient heating due to the hot air being too far from the food, ensuring the baking effect.

[0015] In one embodiment, the first housing has the mounting surface, and at least a portion of the space of the circulating air cavity forms a mounting cavity. The mounting cavity is formed by the first housing protruding away from the second housing and by the second housing recessing away from the first housing. The mounting cavity is configured to accommodate the heating component and / or the power mechanism. Thus, the mounting cavity is formed by the first and second housings. When installing the heating component and the power mechanism, the heating component is first fixed in a specific position within the mounting cavity, and then the drive and rotating components of the power mechanism are installed. This ensures a stable connection between the components and good fit with the circulating air cavity, air inlet channel, and air outlet channel, guaranteeing the stability and reliability of the hot air circulation.

[0016] In one embodiment, the side wall of the first housing is provided with a notch that mates with the air outlet channel, and the notch and the third side wall together form the air outlet.

[0017] In one embodiment, the first outer shell is provided with an air inlet, the projection of the air inlet in the X direction coincides with the mounting cavity, so that the cold air in the inner liner cavity can quickly enter the mounting cavity through the air inlet channel, and be heated by the heating component located in the mounting cavity to form hot air. At the same time, the hot air is quickly discharged into the inner liner cavity through the air outlet channel, thereby improving the hot air circulation efficiency.

[0018] In one embodiment, the sidewall of the circulating air cavity is volute-shaped and connected to the second sidewall to form an Archimedean spiral. Thus, the gas entering from the air inlet channel can flow rapidly and be heated to form hot air under the guidance of the volute-shaped circulating air cavity, allowing the hot air to be blown more powerfully onto the food in the oven, improving the utilization efficiency of the hot air and the baking effect.

[0019] In one embodiment, the power mechanism includes a rotating component and a driving component; the rotating component is disposed within the circulating air cavity; the driving component is connected to the housing and the rotating component, and is configured to drive the rotating component to rotate, thereby providing driving gas to enter the circulating air cavity along the air inlet channel and exit along the air outlet channel. In actual operation, by adjusting the output power of the driving component, thereby adjusting the rotational speed of the rotating component, the speed and air volume of the hot air circulation can be controlled to adapt to the baking requirements of different foods.

[0020] The second technical problem mentioned above is solved by the following technical solution:

[0021] An oven, the oven comprising:

[0022] Multiple inner liner sidewalls; and

[0023] In any of the above-mentioned hot air circulation devices, the shell of the hot air circulation device is fixedly connected to the side walls of the plurality of inner liner to form an inner liner chamber.

[0024] The oven described in this utility model has the following advantages compared with the prior art: The oven includes a hot air circulation device. By adopting an optimized hot air circulation device, the oven can bake various types of food during use, and ensure that the food is heated evenly, effectively avoiding the reduction of food quality, improving the baking effect, and meeting the user's baking quality requirements. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the oven and hot air circulation device according to an embodiment of this application.

[0026] Figure 2 This is an exploded structural diagram of the oven and hot air circulation device according to an embodiment of this application.

[0027] Figure 3 for Figure 1 The diagram shows a front view of the oven and the hot air circulation device.

[0028] Figure 4 for Figure 3 The diagram shows the front view of the oven and hot air circulation device after the first outer shell is hidden.

[0029] Figure 5 for Figure 4 A schematic diagram of the internal structure of the medium-temperature air circulation device.

[0030] Figure 6 for Figure 1 The diagram shows a top view of the oven and hot air circulation device.

[0031] Figure 7for Figure 6 A magnified structural diagram of section M.

[0032] Figure 8 for Figure 6 A cross-sectional view of the hot air circulation device.

[0033] Icon labels:

[0034] 10. Oven;

[0035] 100. Hot air circulation device; 110. Housing; 111. First outer shell; 111a. Mounting surface; 111b. Notch; 112. Second outer shell; 113. Circulating air cavity; 113a. Air inlet section; 113b. Air outlet section; 113c. First side; 113d. Second side; 113e. Mounting cavity; 114. Air inlet channel; 114a. Air inlet; 115. Air outlet channel; 115a. Air outlet; 1152. Second side wall; 1152a. First air guide section; 1153. Third side wall; 1153a. Second air guide section; 1154. Fourth side wall; 120. Heating component; 121. Heating tube; 130. Power mechanism; 131. Rotating component; 132. Driving component; 133. Mounting bracket;

[0036] 200. Inner liner body; 210. Inner liner sidewall; 220. Inner liner chamber. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0043] See Figures 1 to 8The diagram shows a schematic representation of an oven 10 according to one embodiment of this application. The oven 10 provided in this embodiment includes multiple inner cavity sidewalls 210 and a hot air circulation device 100. The housing 110 of the hot air circulation device 100 is fixedly connected to the multiple inner cavity sidewalls 210 to enclose an inner cavity chamber 220. Based on the structural design of the hot air circulation device 100, the oven 10 can achieve uniform baking of food, ensuring even heating and improving baking effect. Exemplarily, in some embodiments, the oven 10 can be an electric oven, and the corresponding oven 10 may also include existing components such as an oven door and a control panel, which will not be described in detail here.

[0044] Specifically, multiple inner cavity sidewalls 210 are connected to form an inner cavity body 200, which serves as the main body of the oven 10 and provides a space for heating and baking food. The multiple inner cavity sidewalls 210 together form an inner cavity chamber 220 for containing food to be baked. Exemplarily, the inner cavity body 200 is configured as a generally cuboid structure, comprising six inner cavity sidewalls 210, all of which together enclose the cuboid-shaped inner cavity chamber 220. Figure 1 As shown, the X-axis represents the front-to-back direction of the inner liner body 200, the Y-axis represents the left-to-right direction of the inner liner body 200, and the Z-axis represents the up-and-down direction of the inner liner body 200. The X, Y, and Z axes are perpendicular to each other. The front of the inner liner body 200 is designed as an open opening to allow food to enter and exit the inner liner chamber 220. It should be noted that in this document, the descriptions of the X, Y, and Z axes can be understood with reference to the definitions provided here.

[0045] The hot air circulation device 100 is used to blow hot air into the inner chamber 220 of the inner liner body 200, thereby heating and baking the food inside the inner chamber 220. The housing 110 of the hot air circulation device 100 is formed by connecting the inner side wall 210 of the inner liner body 200 to the first outer shell 111, which is the second outer shell 112 mentioned later. The first outer shell 111 has a mounting surface 111a parallel to the inner side wall 210 of the inner liner body 200. The first outer shell 111 is located inside the inner chamber 220 and is connected to the inner side wall 210 of the inner liner body 200 through the mounting surface 111a. The connection between the first outer shell 111 and the inner side wall 210 of the inner liner body 200 forms a circulation air chamber 113, an air inlet channel 114, and an air outlet channel 115. Both the air inlet channel 114 and the air outlet channel 115 communicate with the inner chamber 220. For example, in this embodiment, the housing 110 of the hot air circulation device 100 is formed by connecting the inner liner sidewall 210 on the rear side of the inner liner body 200 to the first outer shell 111. Specifically, the mounting surface 111a of the first outer shell 111 is tightly connected to the inner liner sidewall 210 on the rear side of the inner liner body 200 by means of screws or clips. Furthermore, the mounting surface 111a is parallel to the inner liner sidewall 210 on the rear side of the inner liner body 200, that is, the mounting surface 111a is perpendicular to the X-direction.

[0046] With the above structural design, when baking in the oven 10, the food to be baked is placed in the inner cavity 220, and the hot air circulation device 100 is activated. At this time, the cold air in the inner cavity 220 enters the circulation chamber 113 through the air inlet channel 114 and is heated to form hot air. The hot air exits the circulation chamber 113 through the air outlet channel 115 and returns to the inner cavity 220. Based on the structural design of the hot air circulation device 100, after being guided by the inclined surface of the air outlet channel 115, the hot air blows obliquely towards the inner cavity 220 and flows along the inner wall of the inner cavity 220, thus contacting different parts of the food in the inner cavity 220. As a result, the hot air can evenly cover all parts of the food, allowing the food to be heated evenly, and the baking effect is significantly improved. For example, when baking a multi-layer cake, each layer of the cake can be baked to an ideal state, with very uniform color, texture, and expansion, effectively improving the baking effect.

[0047] It should be understood that in other alternative embodiments, the housing 110 of the hot air circulation device 100 may also be formed by connecting other inner liner sidewalls 210 of the inner liner body 200 to the first outer shell 111, for example, by connecting the inner liner sidewalls 210 of the top, left, right or bottom side of the inner liner body 200 to the first outer shell 111. Accordingly, hot air is blown into the inner liner chamber 220 from the top, left, right or bottom side of the inner liner body 200, which can also ensure the baking effect of the food in the inner liner chamber 220.

[0048] See Figure 1 and Figure 2 As shown, in a specific oven application scenario, the hot air circulation device 100 is located at the rear of the oven 10. The hot air circulation device 100 includes a housing 110, a heating element 120, and a power mechanism 130. This hot air circulation device 100 can evenly distribute hot air in the oven 10, baking the food from all directions and greatly improving the baking effect.

[0049] The housing 110 has a mounting surface 111a for mounting the housing 110 on a side wall 210 of the inner liner body 200. Exemplarily, the housing 110 is made of high-temperature resistant stainless steel and has a flat mounting surface 111a, which is parallel to the corresponding side wall 210 of the inner liner body 200 for a secure connection with the oven 10. The housing 110 internally comprises a circulating air chamber 113, an air inlet channel 114, and an air outlet channel 115. An air outlet 115a is located at the end of the air outlet channel 115 away from the circulating air chamber 113. The air inlet channel 114 and the air outlet channel 115 are respectively connected to the circulating air chamber 113. The air inlet channel 114 is used to supply cold air into the circulating air chamber 113, and the air outlet channel 115 is used to supply hot air out of the circulating air chamber 113. The air outlet duct 115 extends away from the circulating air chamber 113 and is inclined to the mounting surface 111a, so that the hot air in the circulating air chamber 113 is discharged obliquely from the air outlet 115a into the inner liner chamber 220. The inclination means that the extension direction of the air outlet 115 is neither parallel nor perpendicular to the mounting surface 111a.

[0050] The heating element 120 is used to heat the cold air entering the circulating air chamber 113, thereby forming hot air. Specifically, the heating element 120 is connected to the housing 110 and is configured to heat the gas inside the circulating air chamber 113. Exemplarily, the heating element 120 may be a quartz heating tube 121, which is capable of rapid heating, thereby quickly heating the gas inside the circulating air chamber 113 to a set temperature to improve baking efficiency.

[0051] At least a portion of the power mechanism 130 is disposed within the circulating air chamber 113. The power mechanism 130 is configured to provide power to allow gas to enter the circulating air chamber 113 along the air inlet channel 114 and to discharge the gas along the air outlet channel 115. Specifically, when hot air is required, the power mechanism 130 draws cold air from the inner chamber 220 into the air inlet channel 114, allowing the cold air to enter the circulating air chamber 113 through the air inlet channel 114. The cold air is then heated by the heating element 120 to form hot air within the circulating air chamber 113. The hot air is then discharged into the inner chamber 220 through the air outlet channel 115 and the air outlet 115a via the power mechanism 130, thus providing circulating hot air into the inner chamber 220.

[0052] The hot air circulation device 100 of this embodiment is mounted to the inner wall 210 of the oven 10 via the mounting surface 111a, thereby providing circulating hot air into the inner cavity 220 of the oven 10. Furthermore, since the air outlet duct 115 is inclined to the mounting surface 111a, the hot air in the circulating air chamber 113 is guided by the inclined surface of the air outlet duct 115 and blows obliquely into the inner cavity 220, flowing along the inner wall of the inner cavity 220 and contacting different parts of the food within the inner cavity 220. Thus, the hot air can evenly cover all parts of the food, and the temperature throughout the inner cavity 220 is relatively uniform, resulting in even heating of the food, improved baking effect, effective prevention of food quality degradation, high baking efficiency, and low energy consumption.

[0053] To improve the guiding effect of the air outlet duct 115 on hot air, the tilt direction of the air outlet duct 115 can be optimized. (See reference...) Figures 3 to 8 As shown, in some embodiments, the power mechanism 130 includes a first central axis L1 along the Y direction, a second central axis L2 along the Z direction, and a third central axis L3 along the X direction, with the first central axis L1, the second central axis L2, and the third central axis L3 being perpendicular to each other. The air outlet duct 115 has a first air guide 1152a and a second air guide 1153a that change the direction of hot air discharge. Figure 4 and Figure 5 As shown, the distance between the first air guide 1152a and the first central axis L1 gradually decreases along the direction away from the second central axis L2. Figures 6 to 8As shown, the distance between the second air guide 1153a and the mounting surface 111a gradually decreases along the direction away from the third central axis L3. Specifically, the X-direction is perpendicular to the mounting surface 111a, the Y-direction is perpendicular to the X-direction and parallel to the mounting surface 111a, and the Z-direction is perpendicular to both the X and Y directions. By cooperating with the first air guide 1152a and the second air guide 1153a, the air outlet 115 is inclined, allowing hot air within the air outlet 115 to be discharged at a specific angle. This facilitates the supply of swirling hot air to the inner cavity 220 of the oven 10, thereby ensuring even baking of the food.

[0054] In some embodiments, the housing 110 includes a first outer shell 111 and a second outer shell 112. A portion of the second outer shell 112 is recessed away from the first outer shell 111, so that after the first outer shell 111 and the second outer shell 112 are connected, a circulating air chamber 113, an air inlet channel 114, and an air outlet channel 115 are formed. For example, when the hot air circulation device 100 is installed on the rear side of the oven 10, the housing 110 can be connected to the first outer shell 111 via the inner liner sidewall 210 on the rear side of the inner liner body 200. Specifically, a plurality of through holes are provided through the first outer shell 111 as air inlet channels 114, and one side of the first outer shell 111 has a flat mounting surface 111a to facilitate connection with the second outer shell 112. Simultaneously, the inner liner sidewall 210 on the rear side of the inner liner body 200 is used as the second outer shell 112. Thus, by installing the first outer shell 111 on the side of the second outer shell 112 near the inner liner chamber 220, the first outer shell 111 and the second outer shell 112 can be connected to form a circulating air chamber 113 and an air outlet channel 115 that can deliver hot air to the inner liner chamber 220. This facilitates the assembly and use of the hot air circulation device 100 of this embodiment with the inner liner structure of an existing oven. It should be understood that when the first outer shell 111 is used as the first outer shell 111, the structural form of the first outer shell 111 only needs to satisfy the requirement of being able to connect with the second outer shell 112 and form a circulating air chamber 113, an air inlet channel 114, and an air outlet channel 115. This embodiment does not limit the specific form of the first outer shell 111.

[0055] The second outer casing 112 has a second sidewall 1152, a third sidewall 1153, and a fourth sidewall 1154 connected in sequence at a recessed position in the air outlet 115. The third sidewall 1153 is arranged opposite to the first outer casing 111 along the X direction, and the second sidewall 1152 and the fourth sidewall 1154 are arranged opposite to each other along the Z direction. The distance between the second sidewall 1152 and the first central axis L1 is greater than the distance between the fourth sidewall 1154 and the first central axis L1. The third sidewall 1153 is inclined to the mounting surface 111a, and the distance between the third sidewall 1153 and the first outer casing 111 gradually decreases in the direction away from the third central axis L3, that is, the distance between the third sidewall 1153 and the first outer casing 111 along the X direction gradually decreases towards the air outlet 115a, so as to form a second air guide 1153a. Furthermore, the second sidewall 1152 is inclined to the XY plane, and the distance between the second sidewall 1152 and the fourth sidewall 1154 gradually decreases in the direction away from the second central axis L2, that is, the distance between the second sidewall 1152 and the fourth sidewall 1154 along the Z direction gradually decreases towards the air outlet 115a, thus forming the first air guide 1152a. Guided by the first air guide 1152a and the second air guide 1153a, the hot air in the air outlet duct 115 is gathered at the air outlet 115a and discharged. The XY plane is a plane parallel to the X and Y directions.

[0056] Therefore, see Figures 4 to 5 As shown, when the second sidewall 1152 of the air outlet duct 115 is inclined to the XY plane and the distance between the second sidewall 1152 and the fourth sidewall 1154 gradually decreases in the direction away from the second central axis L2, the hot air discharged from the air outlet duct 115 can rotate clockwise or counterclockwise. (See also...) Figures 6 to 8 As shown, because the third sidewall 1153 of the air outlet duct 115 is inclined to the mounting surface 111a and the distance between the third sidewall 1153 and the first outer shell 111 gradually decreases in the direction away from the third central axis L3, the hot air discharged from the air outlet duct 115 can flow towards the center of the inner chamber 220, thus generating vortex hot air. Figure 1 As shown, by optimizing the flow path of hot air in the inner chamber 220, the hot air swirls within the inner chamber 220, allowing the hot air to cover all parts of the food more evenly, further facilitating the uniform baking of the food within the inner chamber 220.

[0057] Optionally, in some embodiments, see [reference] Figures 4 to 5 As shown, the air outlet duct 115 extends in a direction away from the circulating air chamber 113, and the angle α between the second sidewall 1152 of the air outlet duct 115 and the XY plane satisfies the condition that α is within the range of 10°-45°. For example, the angle α can be any value between 10°, 15°, 16°, 20°, 25°, 30°, 35°, 40°, 45°, or 10°-45°. (See reference...) Figures 6 to 8As shown, the angle β between the third sidewall 1153 of the air outlet duct 115 and the mounting surface 111a satisfies the condition that β is within the range of 10°-50°. For example, the angle β can be any value between 10°, 15°, 20°, 25°, 30°, 35°, 36°, 40°, 45°, 50°, or 10°-50°. This inclined design of the air outlet duct 115 allows hot air to form a more reasonable flow path within the oven 10, thereby creating a vortex of hot air and effectively improving the baking effect of the food.

[0058] Furthermore, if the included angle α or β is too large, the hot air discharged from the air outlet 115 may become turbulent, especially when the wind speed is high, making it difficult to form a vortex of hot air. If the included angle α or β is too small, the hot air discharged from the air outlet 115 will quickly flow over the food surface, potentially leading to untimely heating and affecting the baking effect. Based on the above considerations, within the aforementioned suitable angle range, the hot air circulation device 100 of this embodiment can ensure that the hot air discharged from the air outlet 115 circulates in a more ideal vortex manner within the inner chamber 220, ensuring that the food is heated evenly during baking, effectively preventing localized burning or undercooking of the food surface, and improving the baking effect.

[0059] Optionally, in some embodiments, there are multiple air outlet ducts 115, which are arranged along a circumference. For example, see [reference needed]. Figures 4 to 8 As shown, this illustration depicts a configuration with two identical air outlet channels 115 arranged along a circumference to ensure consistent dimensions and tilt angles. Exhausting air through both channels 115 together facilitates the formation of a vortex of hot air, resulting in a more even distribution of hot air within the inner chamber 220. This also improves exhaust efficiency and heating effect, further enhancing the baking performance of the food. It should be understood that in other alternative embodiments, the number of air outlet channels 115 may be three, four, or more.

[0060] In some embodiments, the sidewall of the circulating air chamber 113 is volute-shaped, and the sidewall of the circulating air chamber 113 is connected to the second sidewall 1152 to form an Archimedean spiral. The circulating air chamber 113 is configured such that the gas inside flows along the Archimedean spiral, which allows the gas to fully contact the heating element 120 during circulation, improving heating efficiency, and making the distribution of hot air in the inner chamber 220 more uniform.

[0061] Optionally, see Figure 4 and Figure 5As shown, in some embodiments, the circulating air chamber 113 includes an air inlet section 113a and an air outlet section 113b. The air inlet section 113a communicates with the air inlet channel 114, and the air outlet section 113b communicates between the air inlet section 113a and the air outlet channel 115. The sidewall of the air inlet section 113a adopts a volute-shaped design. This shape can better guide the gas into the circulating air chamber 113 and make the gas flow along the Archimedean spiral, while providing suitable installation space for the power mechanism 130 and the heating component 120. Under the action of the power mechanism 130, cold air enters the air inlet section 113a through the air inlet channel 114, is heated by the heating component 120 to form hot air, and is sent to the air outlet channel 115 through the air outlet section 113b, and finally discharged through the air outlet channel 115. The exhaust section 113b forms a transition between the air inlet section 113a and the air outlet duct 115, which can prevent cold air from being sent to the air outlet duct 115 before it is fully heated, thus avoiding a reduction in heating efficiency and affecting the baking effect. At the same time, since the exhaust section 113b is provided, the air outlet duct 115 can be extended on the exhaust section 113b, which facilitates the installation and shaping of the air outlet duct 115.

[0062] Specifically, the first side 113c of the exhaust section 113b extends tangentially to the sidewall of the inlet section 113a and connects to the sidewall of the outlet duct 115. The sidewall of the outlet duct 115 extends obliquely toward the side of the first side 113c closest to the inlet section 113a. The second side 113d of the exhaust section 113b connects the sidewall of the inlet section 113a and the sidewall of the outlet duct 115. The second side 113d is oblique to the first side 113c so that the cross-sectional area of ​​the exhaust section 113b gradually decreases toward the outlet duct 115. The first side 113c and the second side 113d are arranged opposite each other. Figure 5 As shown in the diagram, arrows indicate the gas flow direction at the connection between the air inlet section 113a and the exhaust section 113b. It can be seen that the gas in the air inlet section 113a can flow along the first side 113c of the exhaust section 113b to increase the air velocity. Furthermore, the gas can continue to flow along the side wall of the exhaust channel 115 to create an inclined guide for the hot air, ensuring that the hot air is blown obliquely towards the inner chamber 220. Simultaneously, since the cross-sectional area of ​​the exhaust section 113b gradually decreases towards the exhaust channel 115, the air velocity in the exhaust channel 115 can be further increased. This results in a gradual increase in gas velocity during exhaust, allowing for a more powerful blow to the food inside the inner chamber 220, improving the utilization efficiency of the hot air and the baking effect. Furthermore, since the second side 113d of the exhaust section 113b will block the airflow, some of the gas will be blocked by the second side 113d and flow back to the intake section 113a along the side wall of the intake section 113a. This can circulate and heat the gas, increase the hot air temperature, and thus improve the baking effect.

[0063] In some embodiments, the first housing 111 has a mounting surface 111a, and at least a portion of the space of the circulating air cavity 113 forms a mounting cavity 113e. The mounting cavity 113e is formed by the first housing 111 protruding in a direction away from the second housing 112 and by the second housing 112 being recessed in a direction away from the first housing 111. The mounting cavity 113e is configured to accommodate the heating element 120 and / or the power mechanism 130. The first housing 111 and the second housing 112 together form the mounting cavity 113e to increase the space of the mounting cavity 113e, facilitating the accommodation of a larger volume heating element 120 and power mechanism 130.

[0064] Furthermore, in some embodiments, the sidewall of the first outer casing 111 is provided with a notch 111b that mates with the air outlet channel 115, and the notch 111b and the third sidewall 1153 form an air outlet 115a. An air inlet 114a is provided on the side of the air inlet channel 114 away from the circulating air chamber 113, and the air inlet 114a is formed by the first outer casing 111. The air outlet 115a of the air outlet channel 115 and the air inlet 114a of the air inlet channel 114 are located on the same side of the circulating air chamber 113. Specifically, see [reference needed]. Figures 6 to 8 As shown, the air outlet 115a of the air outlet channel 115 faces into the inner liner chamber 220, and the air inlet 114a of the air inlet channel 114 also faces into the inner liner chamber 220. This allows the gas to form a more reasonable circulation path between the inner liner chamber 220 and the circulating air chamber 113, making it easier for the cold air in the inner liner chamber 220 to quickly enter the circulating air chamber 113 through the air inlet channel 114, while the hot air in the circulating air chamber 113 is quickly discharged into the inner liner chamber 220 through the air outlet channel 115, thus improving the hot air circulation efficiency.

[0065] Furthermore, in some embodiments, the first outer casing 111 is provided with an air inlet 114a, the projection of which in the X direction coincides with the mounting cavity 113e. This allows cold air to directly enter the mounting cavity 113e through the air inlet 114a and the air inlet channel 114, so that the heating element 120 located in the mounting cavity 113e can heat the air to form hot air. Simultaneously, the power mechanism 130 delivers the hot air, improving the hot air circulation effect. Moreover, the air inlet channel 114 extends in a direction perpendicular to the mounting surface 111a, i.e., it extends in the Z direction. This design allows gas to enter the circulation chamber 113 more smoothly along the air inlet channel 114, reducing resistance during gas entry and improving the efficiency of hot air circulation.

[0066] See Figure 2 and Figure 8As shown, in some embodiments, the power mechanism 130 includes a rotating member 131 and a driving member 132. The rotating member 131 is disposed within the circulating air chamber 113, and the driving member 132 is connected to the housing 110 and the rotating member 131 to drive the rotating member 131 to rotate. Exemplarily, the rotating member 131 can be configured as a fan blade, which can more efficiently draw gas into the circulating air chamber 113 when rotating. The driving member 132 can be a motor, the power of which is selected according to the specifications of the oven and the requirements of the hot air circulation device 100. The driving member 132 is mounted outside the housing 110 via a mounting bracket 133, and the output shaft of the driving member 132 passes through the housing 110, extends into the circulating air chamber 113, and connects to the rotating member 131. At this time, the third central axis L3 coincides with the center line of the output shaft of the driving member 132, and the first central axis L1 and the second central axis L2 are both perpendicular to the center line of the output shaft of the driving member 132. When the drive unit 132 is activated, it drives the rotating unit 131 to rotate, thereby generating a strong suction force. This forces the gas to enter the circulating air chamber 113 along the air inlet channel 114, where it is heated by the heating element 120 and then discharged through the air outlet channel 115. In actual operation, the speed and volume of hot air circulation can be controlled by adjusting the rotation speed of the drive unit 132 to adapt to the baking needs of different foods. For example, when baking larger foods, increasing the rotation speed of the drive unit 132 increases the volume of hot air circulation, allowing the food to be heated more quickly and evenly; when baking smaller foods, decreasing the rotation speed of the drive unit 132 prevents the food from burning due to excessive heating.

[0067] In some embodiments, at least a portion of the structure of the heating element 120 is disposed within the circulating air chamber 113. Exemplarily, in some embodiments, the heating element 120 includes a heating tube 121 disposed around the circulating air chamber 113, which enables the heating element 120 to heat the circulating gas more directly, thereby improving the heating speed and efficiency.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A hot air circulation device (100), characterized in that, The hot air circulation device (100) includes: The housing (110) has a mounting surface (111a). The housing (110) has a circulating air chamber (113) inside and an air inlet channel (114) and an air outlet channel (115) connected to the circulating air chamber (113). The air outlet channel (115) has an air outlet (115a) at one end away from the circulating air chamber (113). A heating element (120) connected to the housing (110), the heating element (120) being configured to heat the gas within the circulating air chamber (113); and A power mechanism (130) having at least a portion of its structure disposed within the circulating air chamber (113) is configured to provide power to allow gas to enter the circulating air chamber (113) along the air inlet passage (114) and to allow gas to exit along the air outlet passage (115). The air outlet channel (115) is inclined to the mounting surface (111a) so that the hot air in the circulating air cavity (113) is discharged obliquely from the air outlet (115a).

2. The hot air circulation device (100) according to claim 1, characterized in that, The power mechanism (130) has a first central axis (L1) along the Y direction, a second central axis (L2) along the Z direction, and a third central axis (L3) along the X direction. The air outlet channel (115) has a first air guide (1152a) and a second air guide (1153a) to change the discharge direction of the hot air. Along a direction away from the second central axis (L2), the distance between the first air guide (1152a) and the first central axis (L1) is gradually reduced; The distance between the second air guide (1153a) and the mounting surface (111a) gradually decreases along a direction away from the third central axis (L3). Wherein, the X direction is perpendicular to the mounting surface (111a), the Y direction is perpendicular to the X direction and parallel to the mounting surface (111a), and the Z direction is perpendicular to both the X direction and the Y direction.

3. The hot air circulation device (100) according to claim 2, characterized in that, The housing (110) includes a first outer shell (111) and a second outer shell (112). A portion of the second outer shell (112) is recessed away from the first outer shell (111) so that after the first outer shell (111) and the second outer shell (112) are connected, the circulating air cavity (113), the air inlet channel (114) and the air outlet channel (115) are formed. The second outer casing (112) has a second side wall (1152), a third side wall (1153) and a fourth side wall (1154) connected in sequence at the recessed position of the air outlet duct (115). The third sidewall (1153) is disposed opposite to the first outer shell (111), the second sidewall (1152) and the fourth sidewall (1154) are disposed opposite to each other, and the distance between the second sidewall (1152) and the first central axis (L1) is greater than the distance between the fourth sidewall (1154) and the first central axis (L1); The third sidewall (1153) is inclined to the mounting surface (111a) and the distance between the third sidewall (1153) and the first outer shell (111) gradually decreases in the direction away from the third central axis (L3) to form the second air guide (1153a). The second sidewall (1152) is inclined to the XY plane and the distance between the second sidewall (1152) and the fourth sidewall (1154) gradually decreases in the direction away from the second central axis (L2) to form the first air guide (1152a).

4. The hot air circulation device (100) according to claim 3, characterized in that, The angle α between the second sidewall (1152) and the XY plane satisfies that α is in the range of 10°-45°; and / or The angle β between the third sidewall (1153) and the mounting surface (111a) satisfies that β is within the range of 10°-50°; The XY plane is a plane parallel to the X and Y directions.

5. The hot air circulation device (100) according to claim 3, characterized in that, The first housing (111) has the mounting surface (111a), and at least a portion of the space of the circulating air cavity (113) forms a mounting cavity (113e), which is formed by the first housing (111) protruding in a direction away from the second housing (112) and by the second housing (112) being recessed in a direction away from the first housing (111), and the mounting cavity (113e) is configured to accommodate the heating element (120) and / or the power mechanism (130).

6. The hot air circulation device (100) according to claim 5, characterized in that, The side wall of the first outer shell (111) is provided with a notch (111b) that cooperates with the air outlet channel (115), and the notch (111b) and the third side wall (1153) form the air outlet (115a).

7. The hot air circulation device (100) according to claim 5, characterized in that, The first housing (111) is provided with an air inlet (114a), the projection of the air inlet (114a) in the X direction coincides with the mounting cavity (113e).

8. The hot air circulation device (100) according to claim 3, characterized in that, The sidewall of the circulating air cavity (113) is volute-shaped, and the sidewall of the circulating air cavity (113) is connected to the second sidewall (1152) to form an Archimedean spiral.

9. The hot air circulation device (100) according to claim 1, characterized in that, The power mechanism (130) includes a rotating component (131) and a driving component (132). The rotating component (131) is disposed inside the circulating air cavity (113); The drive member (132) is connected to the housing (110) and the rotating member (131). The drive member (132) is configured to drive the rotating member (131) to rotate, thereby providing drive gas to enter the circulating air chamber (113) along the air inlet channel (114) and to be discharged along the air outlet channel (115).

10. An oven, characterized in that, The oven includes: Multiple inner liner sidewalls (210); and The hot air circulation device (100) according to any one of claims 1-9, wherein the periphery of the housing (110) of the hot air circulation device (100) is fixedly connected to the plurality of inner liner sidewalls (210) to enclose an inner liner chamber (220).

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