Air fryer with high cooking efficiency

Abstract

The utility model relates to an air fryer with high cooking efficiency, which comprises a machine body, a cooking cavity arranged in the machine body and a heating component arranged in the cooking cavity, an air duct plate is arranged at the rear part of the cooking cavity, and an air deflector with an air suction port 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] The utility model relates to the field of air fryers, in particular to an air fryer with high cooking efficiency. Background Art

[0002] With the development of society, people's lives are getting better and better, and the usage rate of air fryers is getting higher and higher. In the existing air fryers, the heat circulation fans of most air fryers are arranged on the top of the cooking cavity. When cooking food, it is easy to cause uneven heating of the upper and lower sides of the food, and it is necessary to turn the food over, resulting in poor cooking efficiency and cooking effect, and poor user experience. In order to meet user needs, a type of air fryer with a side heat circulation fan has appeared on the market. This type of air fryer arranges the heat circulation fan at the rear side of the cooking cavity. Although side blowing can be achieved, thereby heating the upper and lower sides of the food in the cooking cavity at the same time, the heat circulation fan of this type of air fryer mostly adopts centrifugal fans. The wind blown out is spiral-shaped when blowing. When cooking, not only turbulence is prone to occur, but also uneven heat flow distribution in the upper and lower regions is prone to occur, cooking efficiency and cooking effect are poor, and user experience is not good. Utility Model Content

[0003] The present 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] In order to solve the above technical problems, the utility model provides an air fryer with high cooking efficiency, comprising a body and a cooking cavity arranged in the body, a duct plate is arranged at the rear of the cooking cavity, a wind guide plate is arranged at the front side of the duct plate, a guide channel is arranged between the wind guide plate and the duct plate, a centrifugal fan is arranged in the guide channel, the guide channel comprises a left guide channel and a right guide channel extending in both sides and connecting the cooking cavity, the left guide channel and the right guide channel are midline symmetrical structures, the left guide channel comprises an upper left guide channel and a lower left guide channel located below the upper left guide channel, the width of the upper left guide channel is less than or greater than the width of the lower left guide channel, an air suction port is arranged in the middle of the air guide plate, the air suction port corresponds to the centrifugal fan, and a heating component is arranged in the cooking cavity and / or the guide channel. The air fryer is provided with the guide channel extending in both directions at the rear part of the cooking cavity, and the centrifugal fan is provided in the guide channel, so that the air heated by the heating component in the cooking cavity is sucked into the guide channel from the air inlet in the middle part of the air guide plate, and is blown out from the guide channels on both sides of the air guide plate, so as to form a circulating heat flow with transverse flow in the cooking cavity, thereby better heating the upper and lower surfaces of the food in the cooking cavity, and effectively improving the cooking effect; at the same time, in the air fryer, since the wind generated by the centrifugal fan when rotating is spiral-shaped, the left guide channel is designed to have an unequal width structure at the top and bottom, specifically, the width of the upper left guide channel is adjusted according to the width of the upper left guide channel. The working condition of the centrifugal fan is set to be less than or greater than the width of the lower left guide channel, so that the lateral outflowing airflow can be blown out more through the left guide channel to promote the lateral flow of the circulating heat flow, and at the same time, the vertical airflow can be blown out through the left guide channel less to reduce the turbulence formed in the cooking cavity, thereby effectively improving the air outlet efficiency and the heat flow circulation efficiency; in addition, since the air flow directions flowing out from the left guide channel and the right guide channel are symmetrical along the central axis of the centrifugal fan, the right guide channel is also set to an unequal width structure symmetrical with the left guide channel along the center line, the air outlet efficiency and the heat flow circulation efficiency can be effectively improved, thereby improving the cooking efficiency and cooking effect of the air fryer.

[0005] In an optional embodiment, the guide channel also includes an installation cavity formed by the air duct plate being recessed in a direction away from the air duct plate, the bottom surface of the installation cavity is a planar structure, the centrifugal fan is arranged in the installation cavity, and the left guide channel and the right guide channel are both connected to the installation cavity. By providing the installation cavity with a planar structure whose bottom surface is recessed in a direction away from the air duct plate and the centrifugal fan is arranged in the installation cavity, the internal space in the guide channel can be increased, and at the same time, making one side of the centrifugal fan correspond to the bottom plane is relatively conducive to better driving airflow circulation, thereby effectively improving the heat flow circulation efficiency and cooking efficiency in the air fryer.

[0006] In an optional embodiment, the side wall of the installation cavity is a trumpet-shaped structure extending from the bottom surface of the installation cavity to the opening of the installation cavity, and the left and right side walls of the installation cavity are suitable for forming the left guide channel and the right guide channel respectively. By setting the side wall of the installation cavity as a trumpet-shaped structure extending from the bottom surface to the opening direction, the heat flow thrown out by the centrifugal fan can be better guided, so that the heat flow can be better diverted into the cooking cavity, thereby heating the food in the cooking cavity, which can effectively improve the cooking efficiency; at the same time, setting the side wall of the installation cavity as a trumpet-shaped structure extending from the bottom surface to the opening direction can also achieve a more uniform diffusion of the heat flow in the installation cavity into the cooking cavity, thereby heating the food in the cooking cavity, which can effectively improve the cooking effect.

[0007] In an 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, and then the width remains unchanged to form the upper left guide channel; and finally gradually decreases to form the lower left guide channel. When the centrifugal fan rotates counterclockwise, the upper left guide channel is a high pressure area, and the lower left guide channel is a low pressure area. The width of the upper left guide channel is set to be greater than the width of the lower left guide channel, so that the horizontal outflow airflow can be blown out more through the upper left guide channel to promote the horizontal flow of the circulating heat flow, and at the same time, the vertical airflow can be blown out less through the lower left guide channel to reduce the turbulence formed in the cooking cavity, effectively improving the heat flow circulation efficiency and cooking efficiency in the cooking cavity.

[0008] In an 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, and then the width remains unchanged 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. The width of the upper left guide channel is set to be smaller than the width of the lower left guide channel, so that the horizontal outflow airflow can be blown out more through the lower left guide channel to promote the horizontal flow of the circulating heat flow, and at the same time, the vertical airflow can be blown out less through the upper left guide channel to reduce the formation of turbulence in the cooking cavity, effectively improving the heat flow circulation efficiency and cooking efficiency in the cooking cavity.

[0009] In an optional embodiment, the centrifugal fan has a first tangent in the rotation direction, the first tangent passes through the end intersection point of the upper left guide channel and the lower left guide channel, and the first tangent has an intersection with the left side of the air duct plate. In the air fryer, since the wind generated when the centrifugal fan rotates is spiral, that is, the wind is thrown out along the tangent direction of the fan blades, the first tangent in the rotation direction of the centrifugal fan is set to pass through the end intersection point of the upper left guide channel and the lower left guide channel, and have an intersection with the left side of the air duct plate, so that the airflow on one side of the first tangent is mainly the horizontal airflow flowing out horizontally, and the airflow on the other side is mainly the vertical airflow flowing out vertically. By using the larger width 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 smaller width to guide the vertical airflow thrown out by the centrifugal fan, it can be achieved that the horizontally flowing airflow can be introduced more into the cooking cavity to promote the horizontal circulation flow of the circulating heat flow in the cooking cavity, and at the same time, the vertically flowing airflow can be introduced less into the cooking cavity to reduce the formation of turbulence, thereby effectively improving the cooking efficiency of the air fryer.

[0010] In an optional embodiment, the transverse cross-sections of the left guide channel and the right guide channel are both arc-shaped extending from the bottom surface of the installation cavity to the opening of the installation cavity. By setting the left guide channel and the right guide channel to be arc-shaped, it is not only possible to effectively reduce the resistance encountered by the heat flow when flowing in the guide channel, but also to better guide the heat flow thrown out by the centrifugal fan, so that the heat flow can be better diverted into the cooking cavity, thereby heating the food in the cooking cavity, which can effectively improve the heat flow circulation efficiency and cooking efficiency in the air fryer.

[0011] In an optional embodiment, the vertical cross-sectional shape of the side wall of the installation cavity is the same as that of the air guide plate, and the size of at least part of the cross-sectional shape 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 side wall of the installation cavity, not only can the air guide plate be better matched with the air duct plate, thereby improving the overall aesthetics of the air fryer, but also the mutual influence between the air suction in the middle of the air guide plate and the surrounding air discharge can be reduced, effectively improving the heat flow circulation efficiency in the air fryer; at the same time, by setting the vertical cross-sectional size of at least part of the side wall of the installation cavity to be larger than the size of the air guide plate, the outlet size of the guide channel can be guaranteed, avoiding the situation where the air guide plate blocks the outlet of the guide channel, thereby ensuring that the heat flow in the guide channel can flow out smoothly, thereby ensuring the heat flow circulation efficiency and cooking efficiency of the air fryer.

[0012] In an optional embodiment, the air guide plate and the installation cavity opening are located on the same vertical plane, or the air guide plate is located in front of the vertical plane where the installation cavity opening is located. By arranging the air guide plate at the installation cavity opening or in front of the installation cavity opening, the centrifugal fan can draw the hot air in the cooking cavity into the guide channel in a relatively orderly manner through the air suction port in the middle of the air guide plate, thereby achieving non-interference between air inlet and air outlet, effectively reducing the occurrence of turbulence, and improving the heat flow circulation efficiency and cooking efficiency of the air fryer.

[0013] In an optional embodiment, the centrifugal fan is located in the projection area of ​​the bottom surface of the installation cavity by the air guide plate, and the air suction port corresponds to the air inlet in the middle of the centrifugal fan. By arranging the centrifugal fan in the projection area of ​​the bottom surface of the installation cavity by the air guide plate, not only can the centrifugal fan be hidden, thereby improving the overall aesthetics of the air fryer, but also the mutual influence between the air suction in the middle of the air guide plate and the surrounding air outlet can be better reduced, thereby improving the air suction efficiency and the air outlet efficiency, and then improving the heat flow circulation efficiency and cooking efficiency of the air fryer; at the same time, by arranging the air suction port to correspond to the air inlet in the middle of the centrifugal fan, the air suction efficiency can be effectively improved, thereby improving the heat flow circulation efficiency and cooking efficiency in the air fryer.

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

[0015] The present application provides the guide channel extending in both directions at the rear part of the cooking cavity, and provides the centrifugal fan in the guide channel, so that the air heated by the heating component in the cooking cavity is sucked into the guide channel from the air suction port in the middle part of the air guide plate, and is blown out from the guide channels on both sides of the air guide plate, so as to form a circulating heat flow with transverse flow in the cooking cavity, thereby better heating the upper and lower surfaces of the food in the cooking cavity, and effectively improving the cooking effect; at the same time, in the air fryer, since the wind generated by the centrifugal fan when rotating is spiral-shaped, the left guide channel is designed to have unequal width at the top and bottom, specifically, the width of the upper left guide channel is adjusted according to the centrifugal fan. The working condition of the centrifugal fan is set to be smaller than or larger than the width of the lower left guide channel, so that the horizontal outflowing air can be blown out more through the left guide channel to promote the horizontal flow of the circulating heat flow, and at the same time, the vertical airflow can be blown out through the left guide channel less to reduce the turbulence formed in the cooking cavity, thereby effectively improving the air outlet efficiency and the heat flow circulation efficiency; in addition, since the air flow directions flowing out from the left guide channel and the right guide channel are symmetrical along the central axis of the centrifugal fan, the right guide channel is also set to an unequal width structure symmetrical with the left guide channel along the midline, the air outlet efficiency and the heat flow circulation efficiency can be effectively improved, thereby improving the cooking efficiency and cooking effect of the air fryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the inner cavity of a first embodiment of an air fryer with high cooking efficiency of the utility model.

[0017] Figure 2 It is a schematic diagram of the inner cavity structure decomposition of a first embodiment of an air fryer with high cooking efficiency of the utility model.

[0018] Figure 3 It is an overall cross-sectional view of the inner cavity of a first embodiment of an air fryer with high cooking efficiency according to the utility model.

[0019] Figure 4 The utility model is a schematic diagram of the air outlet of a centrifugal fan of a first embodiment of an air fryer with high cooking efficiency.

[0020] Figure 5 It is a schematic diagram of the air outlet of the guide channel of the first embodiment of an air fryer with high cooking efficiency of the utility model.

[0021] Figure 6 It is a schematic diagram of the inner cavity heat flow circulation of the first embodiment of an air fryer with high cooking efficiency of the utility model.

[0022] Figure 7It is an overall cross-sectional view of the inner cavity of a second embodiment of an air fryer with high cooking efficiency according to the utility model.

[0023] Figure 8 It is a schematic diagram of the air outlet of a centrifugal fan of a second embodiment of an air fryer with high cooking efficiency of the utility model. DETAILED DESCRIPTION

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

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

[0029] In addition, it should be noted that the term "one" should be understood as "at least one" or "one or more", that is, 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, and the term "one" cannot be understood as a limitation on the number. The use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as a limitation on the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] Attached Figure 1 To Attachment Figure 6As shown, it is a schematic diagram of a first embodiment of an air fryer with high cooking efficiency provided by the utility model, the air fryer comprises a body 10 and a cooking cavity 11 for cooking arranged in the body 10, a frying basket whose inner cavity is connected to the cooking cavity 11 is detachably provided in the cooking cavity 11, and the frying basket is suitable for containing food to be cooked; an air duct plate 12 is provided at the rear of the cooking cavity 11, an air guide plate 13 is provided at the front side of the air duct plate 12, a guide channel 14 is provided between the air guide plate 13 and the air duct plate 12, the guide channel 14 is connected to the cooking cavity 11 and extends to both sides of the cooking cavity 11, a centrifugal fan 15 for driving air flow is provided in the guide channel 14, an air inlet 131 corresponding to the centrifugal fan 15 is provided in the middle of the air guide plate 13, and a heating component 20 is provided in the cooking cavity 11. The air fryer is provided with the guide channel 14 extending in both sides at the rear part of the cooking cavity 11, and the centrifugal fan 15 is provided in the guide channel 14, so that the hot air heated by the heating component 20 in the cooking cavity 11 can be sucked into the guide channel 14 from the air suction port 131 in the middle part of the air guide plate 13, and blown out from the guide channels 14 on both sides of the air guide plate 13, so as to form a circulating heat flow with transverse flow in the cooking cavity 11, so as to better heat the upper and lower surfaces of the food in the cooking cavity 11, and effectively improve the cooking effect.

[0032] In the air fryer, the guide channel 14 is suitable for including a left guide channel 141 and a right guide channel 142 extending in both directions and connecting to the cooking cavity 11, and the left guide channel 141 and the right guide channel 142 are suitable for a midline symmetrical structure, the left guide channel 141 includes an upper left guide channel 1411 and a lower left guide channel 1412 located below the upper left guide channel 1411, the right guide channel 142 includes an upper right guide channel 1421 and a lower right guide channel 1422 located below the upper right guide channel 1421, the The width of the upper left guide channel 1411 is suitable to be larger than or smaller than the width of the lower left guide channel 1412, and the width of the upper right guide channel 1421 is suitable to be smaller than or larger than the width of the lower left guide channel 1412; a drive system 30 is provided in the body 10, and the drive system 30 includes a drive motor 31 with variable direction, and the rotating shaft of the drive motor 31 is suitable to be extended and connected to the centrifugal fan 15, and the drive motor 31 is suitable to drive the centrifugal fan 15 to rotate, thereby driving the hot air in the cooking cavity 11 to flow to form a circulating heat flow. In the air fryer, since the wind generated when the centrifugal fan 15 rotates is spiral, the left guide channel 141 is designed to have unequal widths up and down, specifically, the width of the upper left guide channel 1411 is set to be smaller than or larger than the width of the lower left guide channel 1412 according to the working condition of the centrifugal fan 15, so that the transverse outflow airflow can be blown out more through the left guide channel 141 to promote the transverse flow of the circulating heat flow, and the vertical airflow can be blown out less through the left guide channel 141 to reduce the turbulence formed in the cooking cavity 11, thereby effectively improving the air outlet efficiency and the heat flow circulation efficiency; at the same time, since the airflow directions flowing out 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 set to have an unequal width structure up and down that is symmetrical with the left guide channel 141 along the midline, the air outlet efficiency and the heat flow circulation efficiency can be effectively improved, thereby improving the cooking efficiency and cooking effect of the air fryer.

[0033] Specifically, Figure 4 and Figure 5As shown, in an optional embodiment, when the centrifugal fan 15 rotates in a clockwise direction, the width of the upper left guide channel 1411 is suitable for being set to be smaller than the width of the lower left guide channel 1412, and the width of the upper right guide channel 1421 is suitable for being set to be larger than the width of the lower right guide channel 1422, and the width of the left guide channel 141 is suitable for first gradually increasing from bottom to top, and then the width remains unchanged to form the lower left guide channel 1412, and finally gradually decreasing to form the upper left guide channel 1411; and the width of the right guide channel 142 is suitable for first gradually increasing from top to bottom, and then the width remains unchanged to form the upper right guide channel 1421, and finally gradually decreasing 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 area, the lower left guide channel 1412 is a high pressure area, the upper right guide channel 1421 is a high pressure area, and the lower right guide channel 1422 is a low pressure area. The width of the upper left guide channel 1411 is set to be smaller than the width of the lower left guide channel 1412, and the width of the upper right guide channel 1421 is set to be larger than the width of the lower right guide channel 1422. This allows the lateral outflowing airflow to be blown out more through the lower left guide channel 1412 and the upper right guide channel 1424 to promote the lateral flow of the circulating heat flow. At the same time, the vertical airflow can be blown out less through the upper left guide channel 1411 and the lower left guide channel 1422 to reduce the turbulence formed in the cooking cavity 11, thereby effectively improving the heat flow circulation efficiency and cooking efficiency in the cooking cavity 11.

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

[0035] like Figure 3 and Figure 6As shown, in an optional embodiment, the side wall of the installation cavity 143 is adapted to be a trumpet-shaped structure extending from the bottom surface of the installation cavity 143 to the opening of the installation cavity 143, and the left and right side walls of the installation cavity 143 are adapted to respectively form the left guide channel 141 and the right guide channel 142. The air fryer can better guide the heat flow thrown out by the centrifugal fan 15 by setting the side wall of the installation cavity 142 as a trumpet-shaped structure extending from the bottom surface to the opening direction, so that the heat flow can be better diverted into the cooking cavity 11, thereby heating the food in the cooking cavity 11, which can effectively improve the cooking efficiency; at the same time, setting the side wall of the installation cavity 143 as a trumpet-shaped structure extending from the bottom surface to the opening direction can also achieve a more uniform diffusion and introduction of the heat flow in the installation cavity 143 into the cooking cavity 11, thereby heating the food in the cooking cavity 11, which can effectively improve the cooking effect.

[0036] like Figure 4 As shown, in an optional embodiment, the centrifugal fan 15 has a first tangent 151 in the direction of rotation, and the first tangent 151 passes through the terminal intersection of the upper left guide channel 1411 and the lower left guide channel 1412, and the first tangent 151 has an intersection with the left side of the air duct plate 12. In the air fryer, since the wind generated by the centrifugal fan 15 when rotating is spiral, that is, the wind is thrown out along the tangent direction of the fan blade, and the guide channel 14 extends in both directions, under the guiding effect of the guide channel 14, the airflow flowing out of the guide channel 14 is mostly horizontal airflow flowing horizontally, and a small number is vertical airflow flowing vertically. By setting the first tangent 151 in the direction of rotation of the centrifugal fan 15 to pass through the terminal intersection of the upper left guide channel 1411 and the lower left guide channel 1412, and having an intersection with the left side of the air duct plate 12, the first tangent 151 can be made to pass through the terminal intersection of the upper left guide channel 1411 and the lower left guide channel 1412, and have an intersection with the left side of the air duct plate 12. The airflow on one side is mainly the horizontal airflow flowing out laterally, and the airflow on the other side is mainly the vertical airflow flowing out vertically. By utilizing the larger one 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 smaller one to guide the vertical airflow thrown out by the centrifugal fan 15, it is possible to enable the horizontal airflow flowing out laterally to be more introduced into the cooking cavity 11 to promote the horizontal circulation flow of the circulating heat flow in the cooking cavity 11, and at the same time, the vertical airflow flowing out can be less introduced into the cooking cavity 11 to reduce the formation of 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 the rotation direction, and the second tangent 152 is suitable for passing through the terminal intersection of the upper right guide channel 1421 and the lower right guide channel 1422, and the second tangent 152 has an intersection with the right side of the air duct plate 12. Since the wind generated by the centrifugal fan 15 when it rotates is spiral, that is, the wind is thrown out along the tangent direction of the fan blades, the second tangent 152 in the rotation direction of the centrifugal fan 15 is set to pass through the terminal intersection of the upper right guide channel 1421 and the lower right guide channel 1422, and has an intersection with the right side of the air duct plate 12, so that the The airflow on one side of the second tangent 152 is mainly the horizontal airflow flowing out laterally, and the airflow on the other side is mainly the vertical airflow flowing out vertically. By utilizing the larger width 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 smaller width to guide the vertical airflow thrown out by the centrifugal fan 15, it is also possible to enable the horizontally flowing airflow to be more introduced into the cooking cavity 11 to promote the horizontal circulation flow of the circulating heat flow in the cooking cavity 11, and at the same time, the vertically flowing airflow can be less 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 transverse cross-sections of the left guide channel 141 and the right guide channel 142 are both arc-shaped extending from the bottom surface 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 in an arc shape, the air fryer can not only effectively reduce the resistance encountered by the heat flow when flowing in the guide channel 14, but also better guide the heat flow thrown out by the centrifugal fan 15, so that the heat flow can be better diverted into the cooking cavity 11, thereby heating the food in the cooking cavity 11, and effectively improving 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 side wall of the installation cavity 143 is the same as that of the air guide plate 13, and the size of at least part of the cross-sectional shape is larger than that 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 side wall of the installation cavity 143, not only can the air guide plate 13 be better matched with the air duct plate 12, thereby improving the overall aesthetics of the air fryer, but also can reduce the mutual influence between the air suction in the middle of the air guide plate 13 and the surrounding air discharge, effectively improving the heat flow circulation efficiency in the air fryer; at the same time, by setting the vertical cross-sectional size of at least part of the side wall of the installation cavity 143 to be larger than that of the air guide plate 13, it is possible to ensure the outlet size of the guide channel 14, avoid the situation where the air guide plate 13 blocks the outlet of the guide channel 14, thereby ensuring that the heat flow in the guide channel 14 can flow out smoothly, thereby 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 installation cavity 143, or the air guide plate 13 is located in front of the vertical plane where the opening of the installation cavity 143 is located. By arranging the air guide plate 13 at the opening of the installation cavity 143 or in front of the opening of the installation cavity 143, the centrifugal fan 15 can draw the hot air in the cooking cavity 11 into the guide channel 14 in a relatively orderly manner through the air suction port 131 in the middle of the air guide plate 13, thereby achieving non-interference between air inlet and air outlet, effectively reducing the occurrence of turbulence, and improving the heat flow circulation efficiency and cooking efficiency of the air fryer.

[0041] like Figure 5 As shown, in an optional embodiment, the centrifugal fan 15 is suitable for being located in the projection area of ​​the bottom surface of the installation cavity 143 of the air guide plate 13, and the air suction port 131 corresponds to the air inlet in the middle of the centrifugal fan 15. By arranging the centrifugal fan 15 in the projection area of ​​the bottom surface of the installation cavity 143 of the air guide plate 13, the air fryer can not only hide the centrifugal fan 15, thereby improving the overall aesthetics of the air fryer, but also better reduce the mutual influence between the air suction in the middle of the air guide plate 13 and the surrounding air outlet, thereby improving the air suction efficiency and the air outlet efficiency, and then improving the heat flow circulation efficiency and cooking efficiency of the air fryer; at the same time, by arranging the air suction port 131 to correspond to the air inlet in the middle of the centrifugal fan 15, the air suction efficiency can be effectively improved, thereby improving the heat flow circulation efficiency and cooking efficiency in the air fryer.

[0042] Embodiment 2:

[0043] Attached Figure 7 To Attachment Figure 8 As shown, it is a schematic diagram of a second embodiment of an air fryer with high cooking efficiency provided by the utility model. Compared with the air fryer in the first embodiment, the air fryer in the second embodiment has some identical structures and functions, which will not be repeated here. Compared with the air fryer in the first embodiment, the air fryer in the second embodiment is different 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 cavity 11A for cooking arranged in the body 10A, the cooking cavity 11A is detachably provided with a frying basket whose inner cavity is connected to the cooking cavity 11A, and the frying basket is suitable for containing food to be cooked; an air duct plate 12A is provided at the rear of the cooking cavity 11A, and an air guide plate 13A is provided at the front side of the air duct plate 12A, and a guide channel 14A is provided between the air guide plate 13A and the air duct plate 12A, which is connected to the cooking cavity 11A and extends to both sides of the cooking cavity 11A, a centrifugal fan 15A for driving air flow and a heating component 20A for heating air are provided in the guide channel 14, and the heating component 20A is suitable for being arranged in front of the centrifugal fan 15A, and an air suction port 131A corresponding to the centrifugal fan 15 is provided in the middle of the air guide plate 13, and the heating component 20A at least partially corresponds to the air suction port 131A of the air guide plate 13A. The air fryer arranges the heating component 20A in front of the centrifugal fan 15A and at least partially corresponds to the air intake port 131A. This not only can directly heat the air entering the guide channel 14A through the air intake port 131A, effectively improving the heating efficiency, but also can reheat the circulating heat flow entering the guide channel 14A through the air intake port 131A, thereby compensating for the heat loss of the circulating heat flow during the circulation process, thereby effectively improving the cooking efficiency.

[0045] like Figure 8As shown, in the air fryer of the second embodiment, the driving system 30A includes a driving motor 31A with variable direction, and the driving motor 31A is suitable for driving the centrifugal fan 15A to drive the centrifugal fan 15A to rotate in a counterclockwise direction. The width of the upper left guide channel 1411A is suitable for being set to be greater than the width of the lower left guide channel 1412A, and the width of the upper right guide channel 1421A is suitable for being set to be less than the width of the lower right guide channel 1422A, and the width of the left guide channel 141A is suitable for gradually increasing from top to bottom, and then the width remains unchanged to form the upper left guide channel 1411A, and finally gradually decreases to form the lower left guide channel 1412A; and the width of the right guide channel 142A is suitable for gradually increasing from bottom to top, and then the width remains unchanged to form the lower right guide channel 1422A, and finally gradually decreases to form the upper right guide channel 1421A. In the air fryer, since the wind generated by the centrifugal fan 15A is spiral, when the centrifugal fan 15A rotates counterclockwise, the upper left guide channel 1411A is a high pressure area, the lower left guide channel 1412A is a low pressure area, the upper right guide channel 1421A is a low pressure area, and the lower right guide channel 1422A is a high pressure area. 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 upper right guide channel 1412A is 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, so that the lateral outflow airflow can be blown out more through the upper left guide channel 1411A and the lower right guide channel 1422A to promote the lateral flow of the circulating heat flow. At the same time, the vertical airflow can be blown out less through the lower left guide channel 1412A and the upper right guide channel 1421A to reduce the turbulence formed in the cooking cavity 11A, thereby effectively improving the heat flow circulation efficiency and cooking efficiency in the cooking cavity 11A.

[0046] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and the purpose of the utility model has been fully and effectively achieved. Those skilled in the art should understand that the embodiments of the utility model described above and shown in the accompanying drawings are only examples and do not limit the utility model. For ordinary technicians in the technical field to which the utility model belongs, several simple deductions or substitutions can be made without departing from the utility model, which should be regarded as belonging to the scope of patent protection determined by the claims submitted for the utility model.

Claims

1. An air fryer with high cooking efficiency, comprising a body and a cooking cavity arranged in the body, characterized in that: An air duct plate is provided at the rear of the cooking cavity, an air guide plate is provided at the front side of the air duct plate, a guide channel is provided between the air guide plate and the air duct plate, a centrifugal fan is provided in the guide channel, the guide channel includes a left guide channel and a right guide channel extending in both sides and connected to the cooking cavity, the left guide channel and the right guide channel are of midline symmetrical structure, the left guide channel includes an upper left guide channel and a lower left guide channel located below the upper left guide channel, the width of the upper left guide channel is less than or greater than the width of the lower left guide channel, an air suction port is provided in the middle of the air guide plate, the air suction port corresponds to the centrifugal fan, and a heating component is provided in the cooking cavity and / or the guide channel.

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

3. The air fryer with high cooking efficiency according to claim 2, characterized in that: The side wall of the installation cavity is a trumpet-shaped structure extending from the bottom surface of the installation cavity to the opening of the installation cavity, and the left and right side walls of the installation cavity are suitable for forming 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 remains unchanged to form the upper left guide channel; Finally, it gradually decreases to form the lower left guide channel.

5. The 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, 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 the rotation direction, the first tangent passes through the end intersection point of the upper left guide channel and the lower left guide channel, and the first tangent has an intersection point with the left side of the air duct plate.

7. The air fryer with high cooking efficiency according to claim 3, characterized in that: The transverse cross-sections of the left guide channel and the right guide channel are both arc-shaped extending from the bottom surface of the installation cavity to the opening of the installation cavity.

8. The air fryer with high cooking efficiency according to claim 3, characterized in that: The vertical cross-sectional shape of the side wall of the installation cavity is the same as that of the air guide plate, and the size of at least part of the cross-sectional area is larger than that of the air guide plate.

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

10. The air fryer with high cooking efficiency according to claim 2, characterized in that: The centrifugal fan is located in the projection area of ​​the bottom surface of the installation cavity by the air guide plate, and the air suction port corresponds to the air inlet in the middle of the centrifugal fan.

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