Hot air assembly and cooking utensil

Abstract

The invention provides a hot air assembly and a cooking utensil, and the hot air assembly comprises a hot air cover which is provided with an air inlet hole and an air outlet hole; the heating piece is arranged in the hot air cover; the impeller is arranged in the hot air cover and is used for supplying air to the air outlet holes; and the air guide ring is arranged in the hot air cover, at least one part of the air guide ring is arranged around the impeller in a surrounding mode, and the air guide ring is used for guiding air to the air outlet holes. According to the hot air assembly provided by the invention, at least one part of the air guide ring surrounds the periphery of the impeller, so that when airflow flows through the air guide ring, the air guide ring can change the flowing direction of the airflow, the airflow flows towards the air outlet holes under the action of the air guide ring, the air outlet amount of the hot air assembly is increased, and the heat utilization rate of the hot air assembly is improved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically, to a hot air assembly and a cooking appliance. Background Technology

[0002] Currently, in cooking appliances with hot air cooking functions, the hot air assembly is a crucial component, responsible for delivering hot air into the cooking cavity to rapidly heat the food. However, in related technologies, the hot air blown out by the hot air assembly tends to drift towards the surrounding cavity walls, resulting in less airflow directly reaching the food. This inefficient use of hot air leads to wasted energy. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] Therefore, a first aspect of the present invention provides a hot air assembly.

[0005] A second aspect of the invention also provides a cooking utensil.

[0006] In view of this, a first aspect of the present invention provides a hot air assembly, comprising: a hot air hood having an air inlet and an air outlet; a heating element disposed inside the hot air hood; an impeller disposed inside the hot air hood for supplying air to the air outlet; and a guide ring disposed inside the hot air hood, at least a portion of which surrounds the impeller and is used to guide air to the air outlet.

[0007] The hot air assembly provided by this invention includes a hot air hood, a heating element, an impeller, and an air guide ring. The heating element, impeller, and air guide ring are disposed inside the hot air hood. When the impeller is turned on, it can send air to the air outlet, thereby transferring the heat generated by the heating element to the outside for cooking and other processing. At the same time, external airflow can enter the hot air hood through the air inlet, thereby achieving hot air circulation. At least a portion of the air guide ring surrounds the impeller. Thus, when the airflow passes through the air guide ring, the air guide ring can change the direction of airflow, causing the airflow to flow towards the air outlet under the action of the air guide ring, thereby preventing the airflow from flowing around and allowing the airflow to flow directly to the food in the cooking chamber, increasing the amount of hot air flowing to the food, and thus improving the heat utilization rate of the hot air assembly.

[0008] The hot air assembly provided by the present invention may also have the following additional technical features:

[0009] In some embodiments, the air guide ring may optionally include a first air guide wall surrounding the impeller, wherein, along the axial direction of the impeller, the air outlet is located on the side of the hot air shroud opposite to the impeller, and the first air guide wall is inclined away from the end away from the air outlet to the end near the air outlet in the direction away from the impeller.

[0010] In this embodiment, the air guide ring includes a first air guide wall, which surrounds the impeller. The first air guide wall is inclined away from the impeller relative to the axis of the impeller. That is, the first air guide wall gradually expands outward from the end away from the air inlet to the end closer to the air inlet. In this way, under the guidance of the first air guide wall, the airflow can gradually transition towards the direction of the air outlet, thereby reducing energy loss and reducing airflow noise.

[0011] In some embodiments, the air guide ring may optionally include: a second air guide wall surrounding the impeller, along the axial direction of the impeller, one end of the second air guide wall being connected to the end of the first air guide wall near the air outlet, the other end of the second air guide wall being in contact with the hot air hood, and the angle between the inner wall surface of the second air guide wall and the inner wall surface of the first air guide wall being less than 180°.

[0012] In this embodiment, the air guide ring further includes a second air guide wall connected to the first air guide wall. The angle between the inner surface of the second air guide wall and the inner surface of the first air guide wall is less than 180°, making the extension direction of the inner surface of the second air guide wall more closely aligned with the impeller's axial direction. Guided by the first air guide wall, the airflow flows to the second air guide wall, and under the guidance of the second air guide wall, the airflow direction approaches the impeller's axial direction, flowing towards the air outlet located on one side of the impeller along the axial direction. This allows the airflow to directly blow onto the food inside the cooking cavity after exiting the air outlet, reducing energy loss and increasing the hot air volume of the hot air assembly. Simultaneously, the other end of the second air guide wall is fitted into the hot air hood, preventing airflow from leaking out through the gap between the second air guide wall and the hot air hood, thus ensuring the airflow volume.

[0013] In some embodiments, the hot air assembly may optionally include: a flow collection structure disposed on the hot air hood or on the impeller; wherein the impeller includes an air inlet and an air outlet, the air inlet and the air outlet being separated within the hot air hood by at least a portion of the flow collection structure, so that the air inlet communicates with the air inlet hole and the air outlet communicates with the air outlet hole.

[0014] In this embodiment, the impeller includes an air inlet and an air outlet. After the impeller is turned on, airflow enters the impeller through the air inlet, then flows out of the impeller through the air outlet, and flows towards the air outlet under the action of the air guide ring. After exchanging heat with the food or other substances, the airflow flows back into the hot air hood through the air inlet, and then enters the air inlet again, realizing the circulation of hot air. The hot air assembly also includes a flow-collecting structure, which is located on the hot air hood or the impeller. At least a portion of the flow-collecting structure can separate the air inlet and the air outlet, preventing the airflow discharged from the air outlet from flowing towards the air inlet instead of the air outlet, thereby preventing a reduction in the airflow volume of the hot air assembly.

[0015] In some embodiments, optionally, when the flow collection structure is provided on the hot air shroud, the flow collection structure includes a forming groove, which is provided on the wall surface of the hot air shroud opposite to the impeller along the axial direction of the impeller and is recessed into the interior of the hot air shroud; an air inlet is provided on the bottom wall of the forming groove and is provided opposite to the air inlet along the axial direction; an air outlet is provided around the forming groove; and the air inlet and air outlet are separated by the side wall of the forming groove.

[0016] In this embodiment, when the airflow collection structure is located within the hot air hood, the airflow collection structure includes a molding groove. The wall surface of the hot air hood and the impeller, which are opposite each other along the axial direction, is recessed into the interior of the hot air hood to form the molding groove. The air inlet is located on the bottom wall of the molding groove and is located opposite to the air inlet of the impeller along the axial direction. The air outlet is located around the molding groove, thereby separating the air inlet and the air outlet from the side wall of the molding groove. This allows the airflow from the air outlet to flow only through the air outlet to the cooking chamber outside the hot air assembly, and the air inlet to communicate only with the cooking chamber outside the hot air assembly through the air inlet. This prevents the airflow from the air outlet of the impeller from being directly sucked into the air inlet of the impeller without flowing through the cooking chamber to cook food, thus preventing the formation of vortices inside the impeller. This improves the hot air delivery volume and hot air cooking efficiency of the technical solution proposed in this application.

[0017] In some embodiments, the forming groove may optionally be fitted to the impeller.

[0018] In this embodiment, the molding groove is fitted to the impeller, which further improves the separation effect of the side wall of the molding groove between the air inlet and the air outlet, thereby improving the air volume and air efficiency of the hot air assembly.

[0019] In some embodiments, the impeller may optionally include a closed impeller.

[0020] In this embodiment, the impeller includes a closed impeller, which has a larger air volume, which is beneficial to increasing the air volume of the hot air assembly and thus improving the heating efficiency of the hot air assembly.

[0021] In some embodiments, optionally, there are multiple air outlets, and the multiple air outlets are arranged in multiple groups along the circumference of the impeller; along the clockwise or counterclockwise direction of the impeller circumference, multiple air outlets in any group are arranged sequentially in a direction away from the axis of the impeller.

[0022] In this embodiment, multiple air outlets are arranged in multiple groups along the circumference of the impeller, and multiple air outlets in any group are arranged sequentially in a clockwise or counterclockwise direction away from the axis of the impeller, so that multiple air outlets can be distributed in a shape along the rotation direction of the impeller, thereby allowing hot air to be blown toward the food along a predetermined trajectory, thereby improving the efficiency of hot air.

[0023] In some embodiments, optionally, multiple air outlets in any group of air outlets are arranged in an arc shape from one end near the axis of the impeller to the other end away from the axis of the impeller.

[0024] In this embodiment, multiple air outlets in any group of air outlets are arranged in an arc shape from one end close to the axis of the impeller to the other end away from the axis of the impeller. This makes the shape of each group of air outlets more compatible with the air outlet shape of the impeller, so that hot air is sprayed onto the food surface in a vortex shape, reducing the energy loss of the airflow.

[0025] In some embodiments, the heating element may optionally include any one of a metal heating element, a graphite heating element, and a graphene heating element.

[0026] In this embodiment, the heating element includes any one of a metal heating tube, a graphite heating tube, and a graphene heating tube. When the heating element includes a metal heating tube or a graphite heating tube, the manufacturing cost is low and the heating temperature rises rapidly. When the heating element includes a graphene heating tube, the heating element has excellent electrical, thermal, mechanical, and optical properties. Furthermore, due to the light-emitting and heat-generating characteristics of the graphene heating tube, the heating of the heating element is more visible, allowing the user to observe the situation inside the cooking cavity.

[0027] In some embodiments, the heating element may optionally surround the impeller.

[0028] In this embodiment, the heating element is arranged around the impeller, which increases the heating area of ​​the heating element. The airflow blown out by the impeller can directly pass through the heating element, carrying away the heat of the heating element, realizing the cooking of food, and improving the hot air output efficiency of the hot air assembly.

[0029] According to a second aspect of the invention, a cooking appliance is also provided, comprising: a hot air assembly as described in any of the above embodiments.

[0030] The cooking appliance provided in the second aspect of the present invention, having included the hot air assembly proposed in any of the above embodiments, has all the beneficial effects of the hot air assembly.

[0031] In some embodiments, the cooking appliance may optionally include: a housing, a hot air assembly disposed within the housing for supplying hot air into the housing, and an air inlet and an air outlet both communicating with the housing.

[0032] In this embodiment, the cooking appliance also includes a housing, within which a hot air assembly is disposed and capable of supplying hot air to the housing for cooking the food inside. Simultaneously, both the air inlet and outlet are connected to the housing, enabling hot air circulation within the housing, reducing energy loss, and improving cooking efficiency.

[0033] In some embodiments, the air guide ring is optionally part of the housing.

[0034] In this embodiment, the air guide ring is part of the housing, making the air guide ring and the housing an integrally formed structure. This eliminates the need for a separate air guide ring design, reducing assembly steps and manufacturing costs.

[0035] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 One of the structural schematic diagrams of a cooking appliance according to an embodiment of the present invention is shown;

[0038] Figure 2 A second schematic diagram of the structure of a cooking appliance according to an embodiment of the present invention is shown;

[0039] Figure 3 It shows Figure 2 A partial structural schematic diagram of the cooking appliance in the illustrated embodiment;

[0040] Figure 4 The third schematic diagram shows the structure of a cooking appliance according to an embodiment of the present invention;

[0041] Figure 5 The fourth schematic diagram shows the structure of a cooking appliance according to an embodiment of the present invention.

[0042] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 1. Hot air hood, 10. Air inlet, 12. Air outlet, 2. Heating element, 3. Impeller, 30. Air inlet, 32. Air outlet, 4. Air guide ring, 40. First air guide wall, 42. Second air guide wall, 5. Collecting structure, 50. Molding groove, 6. Housing. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0046] The following reference Figures 1 to 5 The present invention describes a hot air assembly and a cooking appliance according to some embodiments thereof.

[0047] like Figure 1 , Figure 2 and Figure 3 As shown, according to an embodiment of the present invention, a hot air assembly is provided, comprising: a hot air hood 1, the hot air hood 1 having an air inlet 10 and an air outlet 12; a heating element 2 disposed inside the hot air hood 1; an impeller 3 disposed inside the hot air hood 1, the impeller 3 being used to deliver air to the air outlet 12; and a guide ring 4 disposed inside the hot air hood 1, at least a portion of the guide ring 4 surrounding the impeller 3, the guide ring 4 being used to guide air to the air outlet 12.

[0048] The hot air assembly provided by this invention includes a hot air hood 1, a heating element 2, an impeller 3, and an air guide ring 4. The heating element 2, impeller 3, and air guide ring 4 are disposed inside the hot air hood 1. When the impeller 3 is turned on, it can send air to the air outlet 12, thereby conveying the heat generated by the heating element 2 to the outside for cooking and other processing. At the same time, external airflow can enter the hot air hood 1 through the air inlet 10, thereby realizing the circulation of hot air. At least a portion of the air guide ring 4 surrounds the impeller 3. Thus, when the airflow passes through the air guide ring 4, the air guide ring 4 can change the direction of airflow, causing the airflow to flow towards the air outlet 12 under the action of the air guide ring 4, thereby preventing the airflow from flowing around and allowing the airflow to flow directly to the food in the cooking chamber, increasing the amount of hot air flowing to the food, and thus improving the heat utilization rate of the hot air assembly.

[0049] Understandably, the air guide ring 4 is arranged around the impeller 3. When the airflow blown out by the impeller 3 has a radial flow along the impeller 3, the air guide ring 4 can change the flow direction of this airflow, so that all the airflow flows to the air outlet 12, and then blows directly onto the food through the air outlet 12, avoiding the airflow from blowing onto the cavity wall of the cooking cavity, so that the heat is absorbed by the cavity wall. At the same time, it can also ensure the air volume of the hot air component.

[0050] Specifically, such as Figure 2 and Figure 3 As shown, after setting the air guide ring 4, the airflow flows in the direction indicated by the arrow, which prevents the airflow from flowing towards the cavity wall, increases the amount of hot air flowing towards the food, and improves the hot air utilization rate of the hot air component.

[0051] like Figure 3 As shown, in some embodiments, optionally, the air guide ring 4 includes a first air guide wall 40 surrounding the impeller 3, wherein, along the axial direction of the impeller 3, the air outlet 12 is provided on the side of the hot air shroud 1 opposite to the impeller 3, and the first air guide wall 40 is inclined in the direction away from the impeller 3 from the end away from the air outlet 12 to the end near the air outlet 12.

[0052] In this embodiment, the air guide ring 4 includes a first air guide wall 40, which surrounds the impeller 3. The first air guide wall 40 is inclined away from the impeller 3 relative to the axis of the impeller 3. That is, the first air guide wall 40 gradually expands outward from the end away from the air inlet 10 to the end close to the air inlet 10. In this way, under the guidance of the first air guide wall 40, the airflow can gradually transition towards the direction of the air outlet 12, thereby reducing energy loss and reducing airflow noise.

[0053] like Figure 3 As shown, in some embodiments, optionally, the air guide ring 4 further includes: a second air guide wall 42, which surrounds the impeller 3. Along the axial direction of the impeller 3, one end of the second air guide wall 42 is connected to the end of the first air guide wall 40 near the air outlet 12, and the other end of the second air guide wall 42 is attached to the hot air hood 1. The angle between the inner wall surface of the second air guide wall 42 and the inner wall surface of the first air guide wall 40 is less than 180°.

[0054] In this embodiment, the air guide ring 4 further includes a second air guide wall 42, which is connected to the first air guide wall 40. The angle between the inner wall surface of the second air guide wall 42 and the inner wall surface of the first air guide wall 40 is less than 180°, making the extension direction of the inner wall surface of the second air guide wall 42 closer to the axial direction of the impeller 3. Guided by the first air guide wall 40, the airflow flows to the second air guide wall 42. Under the guidance of the second air guide wall 42, the airflow direction approaches the axial direction of the impeller 3, and then flows into the air outlet 12 located on one side of the impeller 3 along the axial direction. This allows the airflow to directly blow onto the food inside the cooking cavity after exiting the air outlet 12, reducing energy loss and increasing the hot air volume of the hot air assembly. Simultaneously, the other end of the second air guide wall 42 is fitted to the hot air hood 1, preventing airflow from leaking out through the gap between the second air guide wall 42 and the hot air hood 1, thus ensuring the airflow volume.

[0055] Optionally, the first air guide wall 40 and the second air guide wall 42 are an integral structure.

[0056] Optionally, the first guide wall 40 and the second guide wall 42 have a smooth transition to reduce energy loss and airflow noise.

[0057] Optionally, the inner wall of the second air guide wall 42 extends along the axis of the impeller 3 from the end away from the air outlet 12 to the end near the air outlet 12.

[0058] Optionally, the second guide wall 42 is annular, and the axis of the second guide wall 42 coincides with or is parallel to the axis of the impeller 3.

[0059] like Figure 1 and Figure 3As shown, in some embodiments, the hot air assembly may optionally include: a flow collection structure 5 disposed on the hot air hood 1 or on the impeller 3; wherein the impeller 3 includes an air inlet 30 and an air outlet 32, the air inlet 30 and the air outlet 32 ​​being separated within the hot air hood 1 by at least a portion of the flow collection structure 5, so that the air inlet 30 is connected to the air inlet hole 10 and the air outlet 32 ​​is connected to the air outlet hole 12.

[0060] In this embodiment, the impeller 3 includes an air inlet 30 and an air outlet 32. After the impeller 3 is turned on, the airflow enters the impeller 3 through the air inlet 30, then flows out of the impeller 3 through the air outlet 32, and flows to the air outlet 12 under the action of the air guide ring 4. After exchanging heat with the food or other substances, the airflow flows back into the hot air hood 1 through the air inlet 10, and then enters the air inlet 30, realizing the circulation of hot air. The hot air assembly also includes a flow collection structure 5, which is disposed on the hot air hood 1 or the impeller 3. At least a part of the flow collection structure 5 can separate the air inlet 30 and the air outlet 32, preventing the airflow discharged from the air outlet 32 ​​from flowing to the air inlet 30 instead of the air outlet 12, thereby preventing the airflow of the hot air assembly from decreasing.

[0061] It is understandable that, such as Figure 5 As shown, without the airflow collection structure 5, a portion of the airflow exiting the impeller 3's outlet 32 ​​will flow directly into the air inlet 30 within the hot air shroud 1 (e.g., Figure 5 (As indicated by the middle arrow) Air cannot enter the cooking chamber to heat food, causing impeller 3 to form its own vortex, thus reducing the airflow of impeller 3. For example... Figure 3 As shown, this application adds a flow collection structure 5, which separates the air inlet 30 and the air outlet 32, thereby preventing the airflow from the air outlet 32 ​​from flowing directly to the air inlet 30, and thus increasing the air volume of the hot air assembly.

[0062] like Figure 3 As shown, in some embodiments, optionally, when the flow collection structure 5 is provided on the hot air hood 1, the flow collection structure 5 includes a forming groove 50, which is provided on the wall surface of the hot air hood 1 opposite to the impeller 3 along the axial direction of the impeller 3, and is recessed into the interior of the hot air hood 1; the air inlet 10 is provided on the bottom wall of the forming groove 50 and is provided opposite to the air inlet 30 along the axial direction; the air outlet 12 is arranged around the forming groove 50; and the air inlet 30 and the air outlet 32 ​​are separated by the side wall of the forming groove 50.

[0063] In this embodiment, when the airflow collection structure 5 is provided on the hot air hood 1, the airflow collection structure 5 includes a molding groove 50. The walls of the hot air hood 1 and the impeller 3, which are opposite each other along the axial direction, are recessed into the interior of the hot air hood 1 to form the molding groove 50. The air inlet 10 is provided on the bottom wall of the molding groove 50 and is provided opposite to the air inlet 30 of the impeller 3 along the axial direction. The air outlet 12 is provided around the molding groove 50, so that the side wall of the molding groove 50 separates the air inlet 30 and the air outlet 32. This allows the airflow from the air outlet 32 ​​to flow only through the air outlet 12 to the cooking chamber outside the hot air assembly, and the air inlet 30 is only connected to the cooking chamber outside the hot air assembly through the air inlet 10. This prevents the airflow from the air outlet 32 ​​of the impeller 3 from being directly sucked into the air inlet 30 of the impeller 3 without flowing through the cooking chamber to cook food, thus preventing the impeller 3 from generating vortices inside. This improves the hot air delivery volume and hot air cooking efficiency of the embodiment proposed in this application.

[0064] Optionally, the airflow collection structure 5 is made of the hot air shroud 1 by a molding process.

[0065] In some embodiments, the forming groove 50 may optionally be fitted with the impeller 3.

[0066] In this embodiment, the molding groove 50 is fitted with the impeller 3, which further improves the separation effect of the side wall of the molding groove 50 between the air inlet 30 and the air outlet 32, thereby improving the air volume and air efficiency of the hot air assembly.

[0067] In some embodiments, the impeller 3 may optionally include a closed impeller.

[0068] In this embodiment, the impeller 3 includes a closed impeller, which has a larger air volume, which is beneficial to increasing the air volume of the hot air assembly and thus improving the heating efficiency of the hot air assembly.

[0069] Specifically, the closed impeller includes multiple blades, which are circumferentially spaced along the axis. Adjacent blades enclose an air outlet channel. The air outlet 32 ​​is located at the end of the air outlet channel away from the axis of the impeller 3, and the air inlet 30 is connected to the end of the air inlet channel near the axis of the impeller 3.

[0070] Optionally, the closed impeller includes two cover plates spaced apart along the axial direction, a plurality of impellers 3 are disposed within the two cover plates, and the two ends of the blades along the axial direction are respectively connected to the two cover plates.

[0071] like Figure 4 As shown, in some embodiments, optionally, there are multiple air outlet holes 12, and the multiple air outlet holes 12 are arranged in multiple groups along the circumference of the impeller 3; along the clockwise or counterclockwise direction of the circumference of the impeller 3, the multiple air outlet holes 12 in any group are arranged in sequence in a direction away from the axis of the impeller 3.

[0072] In this embodiment, multiple air outlets 12 are arranged in multiple groups along the circumference of the impeller 3, and multiple air outlets 12 in any group are arranged sequentially in a clockwise or counterclockwise direction away from the axis of the impeller 3, so that multiple air outlets 12 can be distributed in a shape along the rotation direction of the impeller 3, thereby allowing hot air to be blown toward the food along a predetermined trajectory, thereby improving the efficiency of hot air.

[0073] Specifically, such as Figure 4 As shown, multiple air outlets 12 in any group of air outlets 12 are successively moved away from the axis of the impeller 3 in a counterclockwise direction along the circumference of the impeller 3.

[0074] Optionally, multiple air outlets 12 in any group of air outlets 12 are arranged in a direction away from the axis of the impeller 3 along the rotation direction of the impeller 3.

[0075] In some embodiments, optionally, a plurality of air outlets 12 in any group of air outlets 12 are arranged in an arc shape from one end near the axis of the impeller 3 to the other end away from the axis of the impeller 3.

[0076] In this embodiment, from one end near the axis of the impeller 3 to the other end away from the axis of the impeller 3, multiple air outlets 12 in any group of air outlets 12 are arranged in an arc shape, so that the shape of each group of air outlets 12 is more compatible with the air outlet shape of the impeller 3, so that hot air is sprayed onto the food surface in a vortex shape, reducing the energy loss of the airflow.

[0077] In some embodiments, the heating element 2 may optionally include any one of a metal heating tube, a graphite heating tube, and a graphene heating tube.

[0078] In this embodiment, the heating element 2 includes any one of a metal heating tube, a graphite heating tube, and a graphene heating tube. When the heating element 2 includes a metal heating tube or a graphite heating tube, the manufacturing cost is low and the heating temperature rises rapidly. When the heating element 2 includes a graphene heating tube, the heating element 2 has excellent electrical, thermal, mechanical, and optical properties. Furthermore, due to the light-emitting and heat-generating characteristics of the graphene heating tube, the heat generation of the heating element 2 is more visible, allowing the user to observe the situation inside the cooking cavity.

[0079] In some embodiments, the heating element 2 is optionally disposed around the impeller 3.

[0080] In this embodiment, the heating element 2 is arranged around the impeller 3, which increases the heating area of ​​the heating element 2, and the airflow blown out by the impeller 3 can directly pass through the heating element 2, carrying away the heat of the heating element 2, realizing the cooking of food, and improving the hot air output efficiency of the hot air assembly.

[0081] According to one embodiment of the present invention, a cooking appliance is also provided, comprising: a hot air assembly as described in any of the above embodiments.

[0082] The cooking appliance provided by the present invention, having included the hot air assembly proposed in any of the above embodiments, has all the beneficial effects of the hot air assembly.

[0083] In some embodiments, the cooking appliance may optionally include: a housing 6, a hot air assembly disposed within the housing 6 for supplying hot air into the housing 6, and an air inlet 10 and an air outlet 12 both communicating with the housing 6.

[0084] In this embodiment, the cooking appliance also includes a housing 6, and a hot air assembly is disposed inside the housing 6, capable of delivering hot air into the housing 6 to cook the food inside the housing 6. Simultaneously, the air inlet 10 and the air outlet 12 are both connected to the housing 6, enabling hot air circulation within the housing 6, reducing energy loss, and improving cooking efficiency.

[0085] In some embodiments, the air guide ring 4 is optionally part of the housing 6.

[0086] In this embodiment, the air guide ring 4 is part of the housing 6, making the air guide ring 4 and the housing 6 an integrally formed structure. Therefore, there is no need to design the air guide ring 4 separately, which reduces assembly processes and manufacturing costs.

[0087] Alternatively, cooking appliances include air fryers, steam ovens, microwave ovens, etc.

[0088] In practical applications, this application proposes a hot air assembly that can improve the hot air efficiency of a steam oven. The hot air assembly includes an air guide ring 4, a closed impeller, a graphene heating element, a hot air hood 1, and a collector structure (e.g., a collector structure 5). When the hot air mode is activated, the motor drives the closed impeller to rotate, which, in conjunction with the graphene heating element, generates hot air. The closed impeller's rotation is divided into an intake area and an exhaust area. When the airflow from the exhaust port 32 passes through the air guide ring 4, the airflow is guided by the air guide ring 4, changing the trajectory of the hot air from moving towards the surrounding cavity walls to blowing directly onto the food on the baking tray. After passing over the food, the hot air is then transferred through the collector structure of the hot air hood 1 to the air inlet 30 of the closed impeller, thus achieving hot air circulation within the cavity. The heat source is a graphene heating element, and the air guide ring 4 is made of stainless steel, which is more conducive to guiding heat transfer to the food to be cooked, thereby preventing heat from being absorbed by the enamel cavity wall and wasting heat.

[0089] The collector structure of the hot air hood 1 is designed by tightly attaching the air inlet 10 to the air inlet 30 of the impeller 3. This, through compression molding, blocks the air outlet and intake areas of the closed impeller, preventing the airflow from the impeller 3 from bypassing the food to be cooked within the cavity and being directly sucked into the air inlet 30 of the impeller 3, thus avoiding airflow loss. (Comparison) Figure 3and Figure 5 Without a collector for molding (e.g., collector structure 5), some hot air will not be blown into the cavity but will be directly sucked into the air inlet 30 of the impeller 3, forming an airflow vortex within the impeller 3 itself, resulting in airflow loss. When a collector is used for molding, the air inlet 30 and the air outlet 32 ​​of the impeller 3 are forcibly isolated, and the air inlet 30 is only connected to the space inside the cavity, thus ensuring that hot air can only be blown into the cavity and improving hot air efficiency.

[0090] This hot air component can achieve a hot air vortex effect, such as... Figure 4 As shown, hot air is sprayed along the vortex nozzle (e.g., air outlet 12) onto the food to be cooked inside the furnace core, achieving high wind speed and high heat in the furnace core, thereby effectively improving the browning and crispness of the food during hot air cooking. Alternatively, the collector can be molded onto the impeller 3, and the air guide ring 4 can also be formed by cavity molding. The hot air hood 1 can also adopt a contoured design to restrict the direction of hot air flow, thereby allowing the hot air to blow onto the food along a predetermined trajectory, improving the hot air efficiency.

[0091] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installed," "connected," "linked," and "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0092] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hot air assembly, characterized in that The hot air assembly comprises: a hot air cover provided with an air inlet hole and an air outlet hole; a heating element arranged in the hot air cover; an impeller arranged in the hot air cover, the impeller being configured to send air to the air outlet hole; a wind guide ring arranged in the hot air cover, at least a part of the wind guide ring being arranged around the impeller, the wind guide ring being configured to guide air to the air outlet hole.

2. The hot air assembly of claim 1, wherein, The wind guide ring comprises: a first wind guide wall arranged around the impeller, wherein, along the axis direction of the impeller, the air outlet hole is arranged on the side of the hot air cover opposite to the impeller, and the first wind guide wall is arranged to be inclined away from the impeller from the end far away from the air outlet hole to the end close to the air outlet hole.

3. The hot air assembly of claim 2, wherein, The wind guide ring further comprises: a second wind guide wall arranged around the impeller, along the axis direction of the impeller, one end of the second wind guide wall is connected to the end of the first wind guide wall close to the air outlet hole, and the other end of the second wind guide wall is attached to the hot air cover, the included angle between the inner wall surface of the second wind guide wall and the inner wall surface of the first wind guide wall is less than 180°.

4. Hot air assembly according to any one of claims 1 to 3, characterized in that Further comprising: a flow collecting structure arranged in the hot air cover or arranged in the impeller; wherein the impeller comprises an air inlet and an air outlet, the air inlet and the air outlet are separated by at least a part of the flow collecting structure in the hot air cover, so that the air inlet communicates with the air inlet hole, and the air outlet communicates with the air outlet hole.

5. The hot air assembly of claim 4, wherein, In the case that the flow collecting structure is arranged in the hot air cover, the flow collecting structure comprises a profiled groove arranged on the wall surface of the hot air cover opposite to the impeller along the axis direction of the impeller and recessed to the inside of the hot air cover; the air inlet hole is arranged on the bottom wall of the profiled groove and is arranged opposite to the air inlet along the axis direction, the air outlet hole is arranged around the profiled groove, and the air inlet and the air outlet are separated by the side wall of the profiled groove.

6. The hot air assembly of claim 5, wherein, The profiled groove is attached to the impeller.

7. Hot air assembly according to any one of claims 1 to 3, characterized in that The impeller comprises a closed impeller.

8. Hot air assembly according to any one of claims 1 to 3, characterized in that The number of air outlet holes is multiple, and multiple air outlet holes are arranged in multiple groups along the circumferential direction of the impeller; along the clockwise or counterclockwise direction of the circumferential direction of the impeller, multiple air outlet holes in any group of air outlet holes are arranged in sequence away from the axis of the impeller.

9. The hot air assembly of claim 8, wherein, from one end close to the axis of the impeller to one end away from the axis of the impeller, multiple air outlet holes in any group of air outlet holes are arranged in an arc shape.

10. Hot air assembly according to any one of claims 1 to 3, characterized in that The heating element comprises any one of a metal heating tube, a graphite heating tube and a graphene heating tube; and / or The heating element is arranged around the impeller.

11. A cooking appliance characterized by, The hot air assembly comprises: The hot air assembly according to any one of claims 1 to 10.

12. The cooking appliance of claim 11, wherein, Further comprising: a housing, the hot air assembly is arranged in the housing, configured to deliver hot air into the housing, the air inlet hole and the air outlet hole both communicate with the housing.

13. The cooking appliance of claim 12, wherein, The wind guide ring is part of the housing.

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