Air fryer with high cooking efficiency

Abstract

The air fryer with the high cooking efficiency comprises a machine body, a cooking cavity formed in the machine body and a heating assembly arranged in the cooking cavity, an air duct plate is arranged on the rear portion of the cooking cavity, and an air guide plate with an air suction opening in the middle is arranged on the front side of the air duct plate; a flow guide channel communicated with the cooking cavity is formed between the air guide plate and the air duct plate, a centrifugal fan corresponding to the air suction opening is arranged in the flow guide channel, and the flow guide channel comprises a left flow guide channel body and a right flow guide channel body which extend towards the two sides. The left flow guide channel and the right flow guide channel are of a center line symmetrical structure, the left flow guide channel comprises an upper left flow guide channel body and a lower left flow guide channel body located below the upper left flow guide channel body, and the width of the upper left flow guide channel body is smaller than or larger than that of the lower left flow guide channel body. The air outlet direction of the centrifugal fan can be better corresponding, so that the air outlet efficiency and the cooking efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of air fryers, and more particularly to an air fryer with high cooking efficiency. Background Technology

[0002] As society develops and people's lives improve, the usage rate of air fryers is also increasing. In most existing air fryers, the heat exchange fan is located at the top of the cooking chamber. This often results in uneven heating of food, requiring frequent flipping, leading to poor cooking efficiency and results, and a poor user experience. To meet user needs, a new type of air fryer with a side-mounted heat exchange fan has emerged. While this allows for side airflow and simultaneous heating of the food, most of these air fryers use centrifugal fans. The spiral airflow creates turbulence and uneven heat distribution, further contributing to poor cooking efficiency and results, and a less than ideal user experience. Summary of the Invention

[0003] This application provides an air fryer with high cooking efficiency to solve the technical problems of slow cooking speed and poor user experience of existing air fryers.

[0004] To address the aforementioned technical problems, this invention provides an air fryer with high cooking efficiency, comprising a body and a cooking chamber disposed within the body. A duct plate is located at the rear of the cooking chamber, and a guide plate is located at the front of the duct plate. A flow channel is provided between the guide plate and the duct plate, and a centrifugal fan is disposed within the flow channel. The flow channel includes a left flow channel and a right flow channel extending to both sides and connecting to the cooking chamber. The left and right flow channels have a symmetrical structure along the centerline. The left flow channel includes an upper left flow channel and a lower left flow channel located below the upper left flow channel. The width of the upper left flow channel is less than or greater than the width of the lower left flow channel. An air intake is located in the center of the guide plate, corresponding to the centrifugal fan. A heating element is disposed within the cooking chamber and / or the flow channel. The air fryer features lateral airflow channels extending from the rear of the cooking chamber, within which a centrifugal fan is installed. This allows air heated by the heating element within the cooking chamber to be drawn into the channels from the air intake in the center of the air guide plate and blown out through the channels on either side of the air guide plate. This creates a laterally flowing, circulating hot airflow within the cooking chamber, effectively heating the food from both sides and improving cooking results. Furthermore, because the centrifugal fan generates a spiral airflow, the left airflow channel is designed with unequal widths at the top and bottom. Specifically, the width of the upper left airflow channel is determined according to... The centrifugal fan is set to operate at a width that is either less than or greater than the width of the lower left guide channel. This allows more horizontally flowing air to pass through the left guide channel, promoting the lateral flow of circulating heat, while reducing vertical airflow through the left guide channel to minimize turbulence within the cooking chamber. This effectively improves airflow efficiency and heat circulation efficiency. Furthermore, since the airflow directions from the left and right guide channels are symmetrical along the central axis of the centrifugal fan, setting the right guide channel to also be symmetrical about its width along the central axis with the left guide channel can effectively improve airflow efficiency and heat circulation efficiency, thereby enhancing the cooking efficiency and effect of the air fryer.

[0005] In an optional embodiment, the airflow channel further includes a mounting cavity formed by a recess in the air duct plate away from the air guide plate. The bottom surface of the mounting cavity is planar, and the centrifugal fan is disposed in the mounting cavity. Both the left and right airflow channels communicate with the mounting cavity. By providing a mounting cavity with a planar bottom surface that is recessed away from the air guide plate on the air duct plate, and placing the centrifugal fan in the mounting cavity, the internal space within the airflow channel can be increased. Simultaneously, aligning one side of the centrifugal fan with the bottom plane is more conducive to better driving airflow circulation, thereby effectively improving the heat circulation efficiency and cooking efficiency within the air fryer.

[0006] In an optional embodiment, the sidewall of the mounting cavity is a funnel-shaped structure extending from the bottom of the mounting cavity to the opening of the mounting cavity, and the left and right sidewalls of the mounting cavity are adapted to form the left guide channel and the right guide channel, respectively. By setting the sidewall of the mounting cavity to a funnel-shaped structure extending from the bottom to the opening, the heat flow ejected by the centrifugal fan can be better guided, allowing the heat flow to be better directed into the cooking cavity, thereby heating the food in the cooking cavity and effectively improving cooking efficiency. At the same time, setting the sidewall of the mounting cavity to a funnel-shaped structure extending from the bottom to the opening also allows the heat flow in the mounting cavity to be diffused more evenly into the cooking cavity, thereby heating the food in the cooking cavity and effectively improving the cooking effect.

[0007] In one optional embodiment, the centrifugal fan rotates counterclockwise. The width of the upper left guide channel is greater than the width of the lower left guide channel. The width of the left guide channel gradually increases from top to bottom, then remains constant to form the upper left guide channel; finally, it gradually decreases to form the lower left guide channel. When the centrifugal fan rotates counterclockwise, the upper left guide channel is a high-pressure zone, and the lower left guide channel is a low-pressure zone. Setting the width of the upper left guide channel to be greater than that of the lower left guide channel allows more horizontally flowing air to pass through the upper left guide channel to promote the horizontal flow of circulating heat, while less vertical airflow passes through the lower left guide channel to reduce turbulence in the cooking cavity, effectively improving the heat circulation efficiency and cooking efficiency within the cooking cavity.

[0008] In one optional embodiment, the centrifugal fan rotates clockwise. The width of the upper left guide channel is smaller than the width of the lower left guide channel. The width of the left guide channel gradually increases from bottom to top, then remains constant to form the lower left guide channel; finally, it gradually decreases to form the upper left guide channel. When the centrifugal fan rotates clockwise, the upper left guide channel is a low-pressure area, and the lower left guide channel is a high-pressure area. Setting the width of the upper left guide channel to be smaller than the width of the lower left guide channel allows more horizontally flowing air to pass through the lower left guide channel to promote the horizontal flow of circulating heat, while less vertical airflow passes through the upper left guide channel to reduce turbulence in the cooking cavity, effectively improving the heat circulation efficiency and cooking efficiency in the cooking cavity.

[0009] In an optional embodiment, the centrifugal fan has a first tangent in its rotation direction, the first tangent passing through the junction of the upper left guide channel and the lower left guide channel, and the first tangent intersecting with the left side of the air duct plate. In the air fryer, since the air generated by the centrifugal fan is spiral-shaped, meaning the air is thrown out along the tangential direction of the fan blades, the first tangent in the rotation direction of the centrifugal fan is set to pass through the intersection point of the upper left guide channel and the lower left guide channel, and intersect with the left side of the air duct plate. This allows the airflow on one side of the first tangent to be mainly a horizontally flowing airflow, while the airflow on the other side is mainly a vertically flowing airflow. By using the wider of the upper left guide channel and the lower left guide channel to guide the horizontal airflow thrown out by the centrifugal fan, and the narrower one to guide the vertical airflow thrown out by the centrifugal fan, more of the horizontally flowing airflow can be introduced into the cooking cavity to promote the horizontal circulation of the circulating heat flow in the cooking cavity, while less of the vertically flowing airflow can be introduced into the cooking cavity to reduce turbulence, thereby effectively improving the cooking efficiency of the air fryer.

[0010] In an optional embodiment, the lateral cross-section of both the left and right guide channels is an arc extending from the bottom of the mounting cavity to the opening of the mounting cavity. By setting the left and right guide channels to an arc shape, not only can the resistance encountered by the heat flow in the guide channels be effectively reduced, but the heat flow ejected by the centrifugal fan can also be better guided, allowing the heat flow to be better directed into the cooking cavity, thereby heating the food in the cooking cavity. This effectively improves the heat circulation efficiency and cooking efficiency within the air fryer.

[0011] In one optional embodiment, the vertical cross-sectional shape of the mounting cavity sidewall is the same as that of the air guide plate, and at least a portion of the cross-sectional dimension is larger than that of the air guide plate. By setting the shape of the air guide plate to be the same as the vertical cross-sectional shape of the mounting cavity sidewall, not only can the air guide plate better cooperate with the air duct plate, thereby improving the overall aesthetics of the air fryer, but it can also reduce the mutual influence between the air intake in the center of the air guide plate and the surrounding air outlet, effectively improving the heat flow circulation efficiency within the air fryer. At the same time, by setting at least a portion of the vertical cross-sectional dimension of the mounting cavity sidewall to be larger than that of the air guide plate, the outlet size of the airflow channel can be guaranteed, avoiding the situation where the air guide plate blocks the outlet of the airflow channel, thereby ensuring that the heat flow within the airflow channel can flow out smoothly, and thus ensuring the heat flow circulation efficiency and cooking efficiency of the air fryer.

[0012] In an optional embodiment, the air guide plate and the mounting cavity opening are located on the same vertical plane, or the air guide plate is located in front of the vertical plane where the mounting cavity opening is located. By setting the air guide plate at or in front of the mounting cavity opening, the centrifugal fan can draw hot air from the cooking cavity into the airflow channel in a more orderly manner through the air intake in the middle of the air guide plate, thereby achieving non-interference between air intake and exhaust, effectively reducing turbulence, and improving the heat circulation efficiency and cooking efficiency of the air fryer.

[0013] In one optional embodiment, the centrifugal fan is located within the projection area of ​​the air guide plate on the bottom surface of the mounting cavity, and the air intake corresponds to the air inlet in the middle of the centrifugal fan. By placing the centrifugal fan within the projection area of ​​the air guide plate on the bottom surface of the mounting cavity, not only can the centrifugal fan be hidden, thereby improving the overall aesthetics of the air fryer, but the mutual influence between the air intake in the middle of the air guide plate and the surrounding air outlet can also be better reduced, thereby improving the air intake efficiency and air outlet efficiency, and thus improving the heat flow circulation efficiency and cooking efficiency of the air fryer. At the same time, by setting the air intake to correspond to the air inlet in the middle of the centrifugal fan, the air intake efficiency can be effectively improved, thereby improving the heat flow circulation efficiency and cooking efficiency within the air fryer.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] This application, by providing a flow guide channel extending to both sides at the rear of the cooking cavity and installing a centrifugal fan within the flow guide channel, enables the air heated by the heating component within the cooking cavity to be drawn into the flow guide channel from the air intake in the middle of the air guide plate and blown out from the flow guide channels on both sides of the air guide plate. This creates a laterally flowing circulating hot airflow within the cooking cavity, thereby better heating the top and bottom surfaces of the food within the cooking cavity and effectively improving the cooking effect. Simultaneously, in the air fryer, since the airflow generated when the centrifugal fan rotates is spiral-shaped, the left flow guide channel is designed with an unequal width structure, specifically, the width of the upper left flow guide channel is determined according to the centrifugal fan's... The centrifugal fan's operating mode is set to be less than or greater than the width of the lower left guide channel. This allows more horizontally flowing air to pass through the left guide channel, promoting lateral heat flow, while reducing vertical airflow through the left guide channel to minimize turbulence within the cooking chamber. This effectively improves airflow efficiency and heat circulation efficiency. Furthermore, since the airflow directions from the left and right guide channels are symmetrical along the central axis of the centrifugal fan, setting the right guide channel to also have an unequal width, symmetrical to the left guide channel along its central axis, effectively improves airflow efficiency and heat circulation efficiency, thereby enhancing the air fryer's cooking efficiency and results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the inner cavity of a first embodiment of an air fryer with high cooking efficiency according to the present invention.

[0017] Figure 2 This is an exploded view of the internal cavity structure of a first embodiment of an air fryer with high cooking efficiency according to the present invention.

[0018] Figure 3 This is an overall sectional view of the inner cavity of a first embodiment of an air fryer with high cooking efficiency according to the present invention.

[0019] Figure 4 This is a schematic diagram of the air outlet of the centrifugal fan in the first embodiment of an air fryer with high cooking efficiency according to the present invention.

[0020] Figure 5 This is a schematic diagram of the air outlet of the air guide channel in the first embodiment of an air fryer with high cooking efficiency according to the present invention.

[0021] Figure 6 This is a schematic diagram of the internal heat flow circulation of a first embodiment of an air fryer with high cooking efficiency according to the present invention.

[0022] Figure 7This is an overall sectional view of the inner cavity of a second embodiment of an air fryer with high cooking efficiency according to the present invention.

[0023] Figure 8 This is a schematic diagram of the air outlet of the centrifugal fan in a second embodiment of an air fryer with high cooking efficiency according to the present invention. Detailed Implementation

[0024] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," and "above" are used here to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] Furthermore, it should be noted that the term "a" should be understood as "at least one" or "one or more," meaning that in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be one or more. The term "a" should not be construed as a limitation on the quantity. The use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as a limitation on the scope of protection of this invention.

[0030] Example 1:

[0031] Appendix Figure 1 To be continued Figure 6The diagram shown is a schematic of a first embodiment of an air fryer with high cooking efficiency provided by the present invention. The air fryer includes a body 10 and a cooking chamber 11 disposed within the body 10 for cooking. A detachable frying basket is provided within the cooking chamber 11, and the frying basket is suitable for holding food to be cooked. An air duct plate 12 is provided at the rear of the cooking chamber 11, and a guide plate 13 is provided at the front of the air duct plate 12. A guide channel 14 is provided between the guide plate 13 and the air duct plate 12, connecting the cooking chamber 11 and extending to both sides of the cooking chamber 11. A centrifugal fan 15 for driving airflow is provided within the guide channel 14. An air intake 131 corresponding to the centrifugal fan 15 is provided in the middle of the guide plate 13. A heating assembly 20 is provided within the cooking chamber 11. The air fryer, by providing a guide channel 14 extending to both sides at the rear of the cooking chamber 11 and installing a centrifugal fan 15 within the guide channel 14, can draw hot air heated by the heating component 20 into the guide channel 14 from the air intake 131 in the middle of the air guide plate 13, and blow it out from the guide channel 14 on both sides of the air guide plate 13, thereby forming a horizontally flowing circulating hot air in the cooking chamber 11. This better heats the top and bottom surfaces of the food in the cooking chamber 11, effectively improving the cooking effect.

[0032] In the air fryer, the airflow channel 14 is adapted to include a left airflow channel 141 and a right airflow channel 142 extending to both sides and communicating with the cooking cavity 11. The left airflow channel 141 and the right airflow channel 142 are adapted to have a center-line symmetrical structure. The left airflow channel 141 includes an upper left airflow channel 1411 and a lower left airflow channel 1412 located below the upper left airflow channel 1411. The right airflow channel 142 includes an upper right airflow channel 1421 and a lower right airflow channel 1422 located below the upper right airflow channel 1421. The width of the upper left guide channel 1411 is adapted to be greater than or less than the width of the lower left guide channel 1412, and the width of the upper right guide channel 1421 is adapted to be less than or greater than the width of the lower left guide channel 1412; the body 10 is provided with a drive system 30, the drive system 30 includes a drive motor 31 with variable direction, the shaft of the drive motor 31 is adapted to extend and connect to the centrifugal fan 15, the drive motor 31 is adapted to drive the centrifugal fan 15 to rotate, thereby driving the hot air in the cooking cavity 11 to flow, so as to form a circulating hot airflow. In the air fryer, since the airflow generated by the centrifugal fan 15 is spiral-shaped when it rotates, the left guide channel 141 is designed with an unequal width structure. Specifically, the width of the upper left guide channel 1411 is set to be less than or greater than the width of the lower left guide channel 1412, depending on the operating conditions of the centrifugal fan 15. This allows more horizontally flowing airflow to pass through the left guide channel 141 to promote the horizontal flow of circulating heat, while reducing the vertical airflow from passing through the left guide channel 141 to decrease turbulence within the cooking cavity 11. This effectively improves airflow efficiency and heat circulation efficiency. Furthermore, since the airflow directions from the left guide channel 141 and the right guide channel 142 are symmetrical along the central axis of the centrifugal fan 15, the right guide channel 142 is also designed with an unequal width structure, symmetrical to the left guide channel 141 along the central axis. This effectively improves airflow efficiency and heat circulation efficiency, thereby enhancing the cooking efficiency and cooking effect of the air fryer.

[0033] Specifically, such as Figure 4 and Figure 5As shown, in an optional embodiment, when the centrifugal fan 15 rotates clockwise, the width of the upper left guide channel 1411 is adapted to be smaller than the width of the lower left guide channel 1412, and the width of the upper right guide channel 1421 is adapted to be larger than the width of the lower right guide channel 1422. The width of the left guide channel 141 is adapted to gradually increase from bottom to top, then maintain a constant width to form the lower left guide channel 1412, and finally gradually decrease to form the upper left guide channel 1411. The width of the right guide channel 142 is adapted to gradually increase from top to bottom, then maintain a constant width to form the upper right guide channel 1421, and finally gradually decrease to form the lower right guide channel 1422. When the centrifugal fan 15 rotates clockwise, the upper left guide channel 1411 is a low-pressure zone, the lower left guide channel 1412 is a high-pressure zone, the upper right guide channel 1421 is a high-pressure zone, and the lower right guide channel 1422 is a low-pressure zone. Setting the width of the upper left guide channel 1411 to be smaller than the width of the lower left guide channel 1412, and setting the width of the upper right guide channel 1421 to be larger than the width of the lower right guide channel 1422, allows more horizontally flowing air to be blown out through the lower left guide channel 1412 and the upper right guide channel 1424 to promote the horizontal flow of circulating heat. At the same time, less vertical airflow is blown out through the upper left guide channel 1411 and the lower left guide channel 1422 to reduce turbulence in the cooking cavity 11, effectively improving the heat circulation efficiency and cooking efficiency in the cooking cavity 11.

[0034] like Figure 3 and Figure 6 As shown, in an optional embodiment, the airflow channel 14 further includes a mounting cavity 143 formed by the recess of the air duct plate 12 in a direction away from the air guide plate 13. The bottom surface of the mounting cavity 143 is planar. The centrifugal fan 15 is disposed in the mounting cavity 143, and both the left airflow channel 141 and the right airflow channel 142 are connected to the mounting cavity 143. By providing a mounting cavity 143 with a planar bottom surface that is recessed in a direction away from the air guide plate 13 on the air duct plate 12, and placing the centrifugal fan 15 in the mounting cavity 143, the internal space within the airflow channel 14 can be increased, thereby improving air intake and effectively enhancing the heat circulation efficiency and cooking efficiency within the air fryer.

[0035] like Figure 3 and Figure 6As shown, in an optional embodiment, the sidewall of the mounting cavity 143 is adapted to be a funnel-shaped structure extending from the bottom of the mounting cavity 143 towards the opening of the mounting cavity 143. The left and right sidewalls of the mounting cavity 143 are adapted to form the left guide channel 141 and the right guide channel 142, respectively. By setting the sidewall of the mounting cavity 142 to a funnel-shaped structure extending from the bottom towards the opening, the air fryer can better guide the heat flow ejected by the centrifugal fan 15, so that the heat flow can be better directed into the cooking cavity 11, thereby heating the food in the cooking cavity 11 and effectively improving cooking efficiency. At the same time, setting the sidewall of the mounting cavity 143 to a funnel-shaped structure extending from the bottom towards the opening can also achieve a more uniform diffusion of the heat flow in the mounting cavity 143 into the cooking cavity 11, thereby heating the food in the cooking cavity 11 and effectively improving the cooking effect.

[0036] like Figure 4 As shown, in an optional embodiment, the centrifugal fan 15 has a first tangent 151 in its rotation direction. The first tangent 151 passes through the intersection point of the upper left guide channel 1411 and the lower left guide channel 1412, and intersects with the left side of the air duct plate 12. In the air fryer, since the wind generated by the centrifugal fan 15 when it rotates is spiral-shaped, that is, the wind is thrown out along the tangential direction of the fan blades, and the guide channel 14 extends to both sides, under the guiding effect of the guide channel 14, the airflow flowing out of the guide channel 14 is mostly a horizontally flowing airflow, and a few are vertically flowing airflows. By setting the first tangent 151 in the rotation direction of the centrifugal fan 15 to pass through the intersection point of the upper left guide channel 1411 and the lower left guide channel 1412, and to intersect with the left side of the air duct plate 12, the first tangent 151 can be made to... The airflow on one side is mainly horizontal, while the airflow on the other side is mainly vertical. By using the wider of the upper left guide channel 1411 and the lower left guide channel 1412 to guide the horizontal airflow thrown out by the centrifugal fan 15, and the narrower one to guide the vertical airflow thrown out by the centrifugal fan 15, more of the horizontally flowing airflow can be introduced into the cooking cavity 11 to promote the horizontal circulation of the circulating heat flow within the cooking cavity 11. At the same time, less of the vertically flowing airflow can be introduced into the cooking cavity 11 to reduce turbulence, thereby effectively improving the cooking efficiency of the air fryer.

[0037] like Figure 4As shown, the centrifugal fan 15 also has a second tangent 152 in its rotation direction. This second tangent 152 is adapted to pass through the intersection point of the upper right guide channel 1421 and the lower right guide channel 1422, and also intersects with the right side of the duct plate 12. Since the wind generated when the centrifugal fan 15 rotates is spiral-shaped, meaning the wind is thrown out along the tangential direction of the fan blades, setting the second tangent 152 in the rotation direction of the centrifugal fan 15 to pass through the intersection point of the upper right guide channel 1421 and the lower right guide channel 1422, and to intersect with the right side of the duct plate 12, also allows the centrifugal fan 15 to... The airflow on one side of the second tangent 152 is mainly a horizontally flowing airflow, while the airflow on the other side is mainly a vertically flowing airflow. By using the wider of the upper right guide channel 1421 and the lower right guide channel 1422 to guide the horizontal airflow thrown out by the centrifugal fan 15, and the narrower one to guide the vertical airflow thrown out by the centrifugal fan 15, more of the horizontally flowing airflow can be introduced into the cooking cavity 11 to promote the horizontal circulation of the circulating heat flow in the cooking cavity 11. At the same time, less of the vertically flowing airflow can be introduced into the cooking cavity 11 to reduce the formation of turbulence, thereby effectively improving the cooking efficiency of the air fryer.

[0038] like Figure 6 As shown, in an optional embodiment, the lateral cross-sections of the left guide channel 141 and the right guide channel 142 are both arc-shaped, extending from the bottom of the mounting cavity 143 to the opening of the mounting cavity. By setting the left guide channel 141 and the right guide channel 142 to arc shapes, the air fryer can not only effectively reduce the resistance encountered by the heat flow in the guide channels 14, but also better guide the heat flow ejected by the centrifugal fan 15, so that the heat flow can be better directed into the cooking cavity 11, thereby heating the food in the cooking cavity 11, which can effectively improve the heat flow circulation efficiency and cooking efficiency in the air fryer.

[0039] like Figure 5As shown, in an optional embodiment, the vertical cross-sectional shape of the sidewall of the mounting cavity 143 is the same as that of the air guide plate 13, and at least a portion of the cross-sectional dimensions are larger than those of the air guide plate 13. By setting the shape of the air guide plate 13 to be the same as the vertical cross-sectional shape of the sidewall of the mounting cavity 143, not only can the air guide plate 13 better cooperate with the air duct plate 12, thereby improving the overall aesthetics of the air fryer, but it can also reduce the mutual influence between the central air intake and the surrounding air outlet of the air guide plate 13, effectively improving the heat flow circulation efficiency within the air fryer. At the same time, by setting at least a portion of the vertical cross-sectional dimensions of the sidewall of the mounting cavity 143 to be larger than the dimensions of the air guide plate 13, the outlet size of the air guide channel 14 can be guaranteed, avoiding the situation where the air guide plate 13 blocks the outlet of the air guide channel 14, thereby ensuring that the heat flow within the air guide channel 14 can flow out smoothly, and thus ensuring the heat flow circulation efficiency and cooking efficiency of the air fryer.

[0040] like Figure 3 and Figure 6 As shown, in an optional embodiment, the air guide plate 13 is preferably located on the same vertical plane as the opening of the mounting cavity 143, or the air guide plate 13 is located in front of the vertical plane where the opening of the mounting cavity 143 is located. By setting the air guide plate 13 at or in front of the opening of the mounting cavity 143, the centrifugal fan 15 can draw the hot air in the cooking cavity 11 into the airflow channel 14 in a more orderly manner through the air intake 131 in the middle of the air guide plate 13, thereby achieving that the air intake and exhaust do not interfere with each other, effectively reducing the occurrence of turbulence, and improving the heat circulation efficiency and cooking efficiency of the air fryer.

[0041] like Figure 5 As shown, in an optional embodiment, the centrifugal fan 15 is adapted to be located within the projection area of ​​the air guide plate 13 on the bottom surface of the mounting cavity 143, and the air intake 131 corresponds to the air inlet in the middle of the centrifugal fan 15. By placing the centrifugal fan 15 within the projection area of ​​the air guide plate 13 on the bottom surface of the mounting cavity 143, the air fryer can not only conceal the centrifugal fan 15, thereby improving the overall aesthetics of the air fryer, but also better reduce the mutual influence between the air intake in the middle of the air guide plate 13 and the surrounding air outlet, thereby improving the air intake efficiency and air outlet efficiency, and thus improving the heat circulation efficiency and cooking efficiency of the air fryer. Simultaneously, by setting the air intake 131 to correspond to the air inlet in the middle of the centrifugal fan 15, the air intake efficiency can be effectively improved, thereby improving the heat circulation efficiency and cooking efficiency within the air fryer.

[0042] Example 2:

[0043] Appendix Figure 7 To be continued Figure 8 The diagram shown is a schematic diagram of a second embodiment of an air fryer with high cooking efficiency provided by the present invention. The air fryer in the second embodiment is identical in some structures and functions to the air fryer in the first embodiment, and will not be described again here. The air fryer in the second embodiment differs from the air fryer in the first embodiment in that the position of the heating component 20, the rotation direction of the drive motor 31, and the structure of the guide channel 14 are different.

[0044] like Figure 7 As shown, the air fryer includes a body 10A and a cooking chamber 11A disposed within the body 10A for cooking. A detachable frying basket is provided within the cooking chamber 11A, and the frying basket is suitable for holding food to be cooked. An air duct plate 12A is provided at the rear of the cooking chamber 11A, and a guide plate 13A is provided at the front of the air duct plate 12A. A guide channel 14A is provided between the guide plate 13A and the air duct plate 12A, connecting to the cooking chamber 11A and extending to both sides of the cooking chamber 11A. A centrifugal fan 15A for driving airflow and a heating component 20A for heating air are provided within the guide channel 14A. The heating component 20A is adapted to be disposed in front of the centrifugal fan 15A. An air intake 131A corresponding to the centrifugal fan 15 is provided in the middle of the guide plate 13A, and the heating component 20A at least partially corresponds to the air intake 131A of the guide plate 13A. The air fryer, by placing the heating component 20A in front of the centrifugal fan 15A and at least partially corresponding to the air intake 131A, can not only directly heat the air entering the guide channel 14A through the air intake 131A, effectively improving heating efficiency, but also reheat the circulating heat flow entering the guide channel 14A through the air intake 131A, thereby compensating for the heat loss of the circulating heat flow during the circulation process, and thus effectively improving cooking efficiency.

[0045] like Figure 8As shown, in the air fryer of the second embodiment, the drive system 30A includes a variable-direction drive motor 31A. The drive motor 31A is adapted to drive the centrifugal fan 15A to rotate counterclockwise. The width of the upper left guide channel 1411A is adapted to be greater than the width of the lower left guide channel 1412A, and the width of the upper right guide channel 1421A is adapted to be less than the width of the lower right guide channel 1422A. The width of the left guide channel 141A is adapted to gradually increase from top to bottom, then remain constant to form the upper left guide channel 1411A, and finally gradually decrease to form the lower left guide channel 1412A. The width of the right guide channel 142A is adapted to gradually increase from bottom to top, then remain constant to form the lower right guide channel 1422A, and finally gradually decrease to form the upper right guide channel 1421A. In the air fryer, because the airflow generated by the centrifugal fan 15A is spiral-shaped, when the centrifugal fan 15A rotates counterclockwise, the upper left guide channel 1411A is a high-pressure zone, the lower left guide channel 1412A is a low-pressure zone, the upper right guide channel 1421A is a low-pressure zone, and the lower right guide channel 1422A is a high-pressure zone. The width of the upper left guide channel 1411A is set to be greater than the width of the lower left guide channel 1412A, and the width of the upper right guide channel 1422A is also set to be greater than the width of the lower left guide channel 1412A. The width of 421A is set to be smaller than the width of the lower right guide channel 1422A, which allows more horizontally flowing air to be blown out through the upper left guide channel 1411A and the lower right guide channel 1422A to promote the horizontal flow of circulating heat. At the same time, less vertical airflow can be blown out through the lower left guide channel 1412A and the upper right guide channel 1421A to reduce turbulence in the cooking cavity 11A, thereby effectively improving the heat flow circulation efficiency and cooking efficiency in the cooking cavity 11A.

[0046] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention, and the objectives of the present invention have been fully and effectively achieved. Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the scope of the invention. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection defined by the claims submitted herein.

Claims

1. An air fryer with high cooking efficiency, comprising a body and a cooking chamber disposed within the body, characterized in that, The cooking cavity is provided with an air duct plate at the rear and an air guide plate at the front. A flow channel is provided between the air guide plate and the air duct plate. A centrifugal fan is provided in the flow channel. The flow channel includes a left flow channel and a right flow channel extending to both sides and connecting the cooking cavity. The left flow channel and the right flow channel have a center-line symmetrical structure. The left flow channel includes an upper left flow channel and a lower left flow channel located below the upper left flow channel. The width of the upper left flow channel is less than or greater than the width of the lower left flow channel. An air intake is provided in the middle of the air guide plate, and the air intake corresponds to the centrifugal fan. A heating component is provided in the cooking cavity and / or the flow channel.

2. The air fryer with high cooking efficiency according to claim 1, characterized in that, The airflow channel also includes an installation cavity formed by the recess of the air duct plate in the direction away from the air guide plate. The bottom surface of the installation cavity is a planar structure. The centrifugal fan is disposed in the installation cavity. The left airflow channel and the right airflow channel are both connected to the installation cavity.

3. The air fryer with high cooking efficiency according to claim 2, characterized in that, The sidewall of the mounting cavity is a funnel-shaped structure extending from the bottom of the mounting cavity to the opening of the mounting cavity, and the left and right sidewalls of the mounting cavity are adapted to form the left guide channel and the right guide channel, respectively.

4. The air fryer with high cooking efficiency according to claim 3, characterized in that, The centrifugal fan rotates counterclockwise, the width of the upper left guide channel is greater than the width of the lower left guide channel, and the width of the left guide channel gradually increases from top to bottom, and then the width remains unchanged to form the upper left guide channel; Finally, it gradually decreases to form the lower left guide channel.

5. An air fryer with high cooking efficiency according to claim 3, characterized in that, The centrifugal fan rotates clockwise, the width of the upper left guide channel is smaller than the width of the lower left guide channel, and the width of the left guide channel gradually increases from bottom to top, and then the width remains unchanged to form the lower left guide channel; Finally, it gradually decreases to form the upper left guide channel.

6. An air fryer with high cooking efficiency according to claim 4 or 5, characterized in that, The centrifugal fan has a first tangent in its rotation direction. The first tangent passes through the junction of the upper left guide channel and the lower left guide channel, and the first tangent intersects with the left side of the air duct plate.

7. An air fryer with high cooking efficiency according to claim 3, characterized in that, The transverse cross-section of both the left and right guide channels is an arc extending from the bottom of the mounting cavity to the opening of the mounting cavity.

8. An air fryer with high cooking efficiency according to claim 3, characterized in that, The vertical cross-sectional shape of the sidewall of the mounting cavity is the same as that of the air guide plate, and at least part of the cross-sectional dimensions are larger than those of the air guide plate.

9. An air fryer with high cooking efficiency according to claim 8, characterized in that, The air guide plate and the mounting cavity opening are located on the same vertical plane, or the air guide plate is located in front of the vertical plane where the mounting cavity opening is located.

10. An air fryer with high cooking efficiency according to claim 2, characterized in that, The centrifugal fan is located within the projection area of ​​the air guide plate on the bottom surface of the mounting cavity, and the air intake corresponds to the air inlet in the middle of the centrifugal fan.

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