Cooking utensil exhaust assembly and cooking utensil

Abstract

The utility model discloses a cooking utensil exhaust assembly and cooking utensil, the cooking utensil exhaust assembly comprises a shell and a blade, an exhaust channel is arranged in the shell, the shell is provided with an exhaust hole communicated with the exhaust channel, the blade is located in the exhaust hole and pivotally connected with the shell, and the blade is located in the exhaust hole. The blades can rotate relative to the shell under blowing of airflow in the exhaust channel. The exhaust assembly of the cooking utensil has the advantages that the exhaust speed is adjustable, and cooked food is good in fragrance and taste.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cooking utensils, in particular to a cooking utensil exhaust assembly and a cooking utensil. BACKGROUND

[0002] It is known that the amount and types of aroma-producing substances generated during the roasting of most foods far exceed those of other ripening methods. For example, roasted meat and roasted starch-based food materials, whether in terms of aroma or taste, far exceed steaming and boiling. The air fryer in the related art relies on a heating tube and a fan to simulate traditional roasting, but due to the working principle of such an appliance, the air flow speed is fast during cooking, and most of the aroma-producing substances are discharged through the exhaust port during the roasting process, resulting in a small amount of aroma-producing substances after cooking, which affects the user experience. SUMMARY

[0003] The utility model aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the utility model provides a cooking utensil exhaust assembly, which has the advantages of adjustable exhaust speed, good food aroma and taste after cooking.

[0005] An embodiment of the utility model also provides a cooking utensil and an exhaust control method thereof.

[0006] The cooking utensil exhaust assembly of the embodiment of the utility model comprises a shell and a blade, the shell is provided with an exhaust passage, and the shell is provided with an exhaust hole communicating with the exhaust passage; the blade is located in the exhaust hole and is pivotably connected to the shell, and the blade can rotate relative to the shell under the blowing of the airflow in the exhaust passage.

[0007] According to the cooking utensil exhaust assembly of the embodiment of the utility model, the blade is arranged in the exhaust hole on the shell and is pivotably connected to the shell, when the airflow in the exhaust passage is discharged to the outside through the exhaust hole, the blade will rotate relative to the shell under the blowing of the airflow, so as to change the ventilation area at the exhaust hole, that is, the faster the airflow flow rate in the exhaust passage, the greater the blade swing amplitude, the larger the exposed ventilation area at the exhaust hole, and the more the exhaust amount per unit time. At this time, when cooking food, the wind pressure in the cooking cavity can be reduced at the set stage to reduce the airflow flow rate in the exhaust passage, thereby achieving the purpose of reducing the exhaust amount, effectively preventing most of the aroma-producing components in the cooking cavity from being discharged from the cooking cavity, and improving the aroma and taste of the cooked food and the user satisfaction.

[0008] Optionally, one of the shell and the blade is provided with a rotating shaft, and the other of the shell and the blade is provided with a connecting hole, an axial direction of the rotating shaft is perpendicular to a height direction of the shell, the rotating shaft is clearance-fitted in the connecting hole, and the blade is pivotable relative to the shell about a central axis of the rotating shaft.

[0009] The cooking utensil exhaust assembly provided by the embodiment of the present application is clearance-fitted with the rotating shaft and the connecting hole, so that the blade is more labor-saving when rotating relative to the shell, and the internal hot and humid gas in the cooking cavity is prevented from being discharged slowly to cause the food to be not crisp enough when the air pressure in the cooking cavity is low.

[0010] Optionally, the upper end of the blade is provided with the rotating shaft, the shell is provided with the connecting hole, and the shell is further provided with a notch, the notch extends to an inner circumferential surface of the connecting hole along a radial direction of the connecting hole, a minimum width of the notch is smaller than a diameter of the rotating shaft, and the rotating shaft is adapted to be fitted in the connecting hole through the notch.

[0011] The cooking utensil exhaust assembly provided by the embodiment of the present application is clearance-fitted with the rotating shaft and the connecting hole, so that the blade is more labor-saving when rotating relative to the shell, and the internal hot and humid gas in the cooking cavity is prevented from being discharged slowly to cause the food to be not crisp enough when the air pressure in the cooking cavity is low.

[0012] Optionally, the exhaust hole is provided with a connecting plate extending along the height direction of the shell, the connecting plate is located at a central position of the exhaust hole in a width direction of the shell, and the connecting hole is arranged on the connecting plate; an upper end surface of the blade is provided with a mounting groove, the mounting groove penetrates the blade along a thickness direction of the blade, a width of the mounting groove is greater than a thickness of the connecting plate, and the rotating shaft is arranged in the mounting groove.

[0013] The cooking utensil exhaust assembly provided by the embodiment of the present application is clearance-fitted with the rotating shaft and the connecting hole, so that the blade is more labor-saving when rotating relative to the shell, and the internal hot and humid gas in the cooking cavity is prevented from being discharged slowly to cause the food to be not crisp enough when the air pressure in the cooking cavity is low.

[0014] Optionally, the inner circumferential surface of the connecting hole is provided with a plurality of first protrusions, or the outer circumferential surface of the rotating shaft is provided with a plurality of second protrusions.

[0015] The cooking utensil exhaust assembly of the embodiment of the utility model, the setting of the first protrusion and / or the second protrusion effectively reduces the contact area between the rotating shaft and the shell, the sliding friction between the two is lower, the blade rotates more smoothly, and the exhaust of the humid and hot gas in the cooking cavity is more beneficial.

[0016] Optionally, the blade is multiple and arranged in sequence along the height direction of the shell; and / or the blade is an arc-shaped plate which is bent towards the direction away from the exhaust passage in the middle part.

[0017] The cooking utensil exhaust assembly of the embodiment of the utility model, by setting multiple blades, on the basis of the cross-sectional area of the exhaust hole being certain, the size of a single blade is smaller, the weight is lighter, and it is easier to rotate a larger angle to ensure that the humid and hot gas in the cooking cavity is smoothly exhausted.

[0018] Optionally, the blade extends along the width direction of the shell, the width of the blade is L, and the thickness of the blade is K, wherein 10mm≤L≤50mm, and / or 1mm≤K≤5mm.

[0019] The cooking utensil exhaust assembly of the embodiment of the utility model, by setting the width of the blade to be greater than or equal to 10mm and the thickness to be greater than or equal to 1mm, the blade is effectively prevented from being too light to play a good sealing effect. By setting the width of the blade to be less than or equal to 50mm and the thickness to be less than or equal to 5mm, the blade is effectively prevented from being too heavy to meet the exhaust requirement when the wind speed is low.

[0020] Optionally, a plurality of through holes are arranged on the blade, and / or the blade is spaced apart from part of the inner wall surface of the exhaust hole.

[0021] The cooking utensil exhaust assembly of the embodiment of the utility model, by arranging a plurality of through holes on the blade and / or setting the blade to be spaced apart from part of the inner wall surface of the exhaust hole, when the airflow velocity in the exhaust passage is low, the airflow can always be exhausted to the outside through the through holes and / or the gap between the blade and the inner wall surface of the exhaust hole, and the smooth exhaust of the humid and hot gas in the cooking cavity is effectively ensured.

[0022] Optionally, on the projection plane perpendicular to the extension direction of the exhaust hole, the area of the projection outer contour of the exhaust hole is S1, and the area of the projection of the blade when not subjected to external force is S2, wherein 60%≤S2 / S1≤85%.

[0023] The cooking utensil exhaust assembly provided by the embodiment of the utility model, by setting S2 / S1 is greater than or equal to 60%, avoid the blade not to be blown by the airflow and the ventilation area at the exhaust hole is too large to cause the excessive loss of food aroma substances, effectively guarantee the user experience. By setting S2 / S1 is less than or equal to 85%, effectively avoid the blade area ratio is too large, and then effectively prevent the blade from being completely closed and unable to open, and the internal pressure of the cooking cavity is increased to cause danger.

[0024] Optionally, the shell comprises a connected upper cover body and lower cover body, the upper cover body and the lower cover body surround the exhaust passage, the upper cover body is provided with the exhaust hole, and the lower cover body is provided with an air outlet hole communicating the exhaust passage and the cooking cavity.

[0025] The cooking utensil exhaust assembly provided by the embodiment of the utility model, the gas in the cooking cavity enters the exhaust passage through the air outlet hole, and then is discharged to the outside through the exhaust hole. And the shell is divided into the upper cover body and the lower cover body, the exhaust passage is conveniently formed around between the two, the heat dissipation fan is conveniently installed in the exhaust passage, the motor is conveniently heat dissipated, and the structure of the cooking equipment is compact.

[0026] The cooking utensil provided by the embodiment of the utility model comprises a motor, a hot air fan, a cooking cavity and the cooking utensil exhaust assembly according to any one of the above embodiments, the body of the motor is installed on the side of the shell away from the cooking cavity, and the hot air fan is located in the cooking cavity and is coaxially connected with the motor shaft of the motor.

[0027] The technical advantages of the cooking utensil provided by the embodiment of the utility model are the same as those of the cooking utensil exhaust assembly of the above embodiment, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a sectional view of the cooking utensil according to the embodiment of the utility model.

[0029] Figure 2 It is a schematic view of the cooking utensil exhaust assembly according to the embodiment of the utility model.

[0030] Figure 3 It is a side view of the cooking utensil exhaust assembly according to the embodiment of the utility model.

[0031] Figure 4 It is a sectional view of the cooking utensil exhaust assembly according to the embodiment of the utility model.

[0032] Figure 5 It is Figure 4 It is an enlarged view of A in the figure.

[0033] Figure 6is a front view of the cooking utensil exhaust assembly according to an embodiment of the present utility model, wherein the blade is in a fully closed position.

[0034] Figure 7 is another front view of the cooking utensil exhaust assembly according to an embodiment of the present utility model, wherein the blade is in an open position.

[0035] Figure 8 is an exploded view of the cooking utensil exhaust assembly according to an embodiment of the present utility model.

[0036] Figure 9 is another exploded view of the cooking utensil exhaust assembly according to an embodiment of the present utility model.

[0037] Figure 10 is a schematic view of the blade in the cooking utensil exhaust assembly according to an embodiment of the present utility model.

[0038] Reference signs:

[0039] 1, shell; 11, upper cover body; 111, exhaust hole; 112, connecting plate; 113, connecting hole; 114, notch; 115, first protrusion; 12, lower cover body; 121, air outlet hole; 13, exhaust passage; 2, blade; 21, rotating shaft; 22, mounting groove; 23, through hole; 3, motor; 4, hot air fan; 5, cooling fan; 6, cooking cavity. DETAILED DESCRIPTION

[0040] The embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and cannot be understood as a limitation of the present utility model.

[0041] The cooking utensil exhaust assembly according to an embodiment of the present utility model is described below in combination with Figures 1-10

[0042] The cooking utensil exhaust assembly according to an embodiment of the present utility model comprises a shell 1 and a blade 2. The shell 1 is provided with an exhaust passage 13, and the shell 1 is provided with an exhaust hole 111 in communication with the exhaust passage 13. The blade 2 is located in the exhaust hole 111 and is pivotably connected to the shell 1, and the blade 2 can rotate relative to the shell 1 under the blowing of airflow in the exhaust passage 13.

[0043] ​According to the cooking utensil exhaust assembly provided by the embodiment of the present application, the vane 2 is arranged in the exhaust hole 111 on the shell 1 and pivotally connected with the shell 1, when the airflow in the exhaust passage 13 is discharged to the outside through the exhaust hole 111, the vane 2 will rotate relative to the shell 1 under the blowing of the airflow, so as to change the ventilation area at the exhaust hole 111, that is, the faster the airflow speed in the exhaust passage 13, the greater the swing range of the vane 2, the greater the exposed ventilation area at the exhaust hole 111, and the more the exhaust amount per unit time. At this time, when cooking food, the air pressure in the cooking cavity 6 can be reduced at the setting stage, so as to reduce the airflow speed in the exhaust passage 13, and then the purpose of reducing the exhaust amount is achieved, most of the aroma components in the cooking cavity 6 are effectively prevented from being discharged out of the cooking cavity 6, the food after cooking has higher aroma and taste, and the user has higher satisfaction.

[0044] It should be noted that, taking the air fryer as an example, the air fryer increases the rotation speed of the hot air fan 4 by increasing the rotation speed of the motor 3, so as to achieve the purpose of increasing the air pressure in the cooking cavity 6.

[0045] In some embodiments, one of the shell 1 and the vane 2 is provided with a rotating shaft 21, the other of the shell 1 and the vane 2 is provided with a connecting hole 113, the axial direction of the rotating shaft 21 is perpendicular to the height direction of the shell 1 (the up-down direction in the figure), the rotating shaft 21 is clearance-fitted in the connecting hole 113, and the vane 2 is pivotable relative to the shell 1 about the central axis of the rotating shaft 21. Figure 2

[0046] By clearance-fitting the rotating shaft 21 and the connecting hole 113, the rotation of the vane 2 relative to the shell 1 is more labor-saving, and the internal hot and humid gas in the cooking cavity 6 is prevented from being discharged in an unsmooth manner when the air pressure in the cooking cavity 6 is small, so that the food is not crisp enough. Meanwhile, by setting the axial direction of the rotating shaft 21 as a horizontal direction perpendicular to the height direction of the shell 1, the vane 2 can keep a vertical state under the action of gravity, so as to achieve the maximum range of shielding of the exhaust hole 111.

[0047] Specifically, the axial direction of the rotating shaft 21 is consistent with the width direction of the shell 1, and the projection area of the vane 2 when not blown by the airflow is the largest on a projection plane perpendicular to the extension direction of the exhaust hole 111 (the front-rear direction in the figure). Figure 2

[0048] In some embodiments, as shown in Figure 5 , Figure 8 and Figure 9 , the upper end of the vane 2 is provided with the rotating shaft 21, the shell 1 is provided with the connecting hole 113, the shell 1 is further provided with a notch 114, the notch 114 extends to the inner circumferential surface of the connecting hole 113 along the radial direction of the connecting hole 113, the minimum width of the notch 114 is smaller than the diameter of the rotating shaft 21, and the rotating shaft 21 is adapted to be fitted in the connecting hole 113 through the notch 114.

[0049] ​​By providing a notch 114 on the housing 1 that communicates with the connecting hole 113, the rotating shaft 21 is adapted to deform the housing 1 when passing through the notch 114 so as to smoothly enter the connecting hole 113, thus completing the pivotal connection between the blade 2 and the housing 1. The blade 2 is easy and quick to install and remove from the housing 1. In addition, by setting the rotating shaft 21 at the upper end of the blade 2, it effectively prevents the blade 2 from failing to return to its original position when the rotation angle is too large under the blowing of airflow.

[0050] Specifically, such as Figure 5 As shown, the notch 114 is provided above the connecting hole 113. The width of the notch 114 gradually increases outward along the radial direction of the connecting hole 113. The maximum width of the notch 114 can be greater than the diameter of the rotating shaft 21, thereby further improving the assembly efficiency of the blade 2 on the housing 1.

[0051] In some embodiments, such as Figures 8-10 As shown, a connecting plate 112 extending along the height direction of the housing 1 is provided inside the exhaust port 111. The connecting plate 112 is located in the width direction of the housing 1 of the exhaust port 111. Figure 2 The connecting plate 112 has a connecting hole 113 located at the center of the left-right direction. The upper end face of the blade 2 has a mounting groove 22, which extends through the blade 2 along its thickness direction. The width of the mounting groove 22 is greater than the thickness of the connecting plate 112. The rotating shaft 21 is located inside the mounting groove 22.

[0052] By providing a connecting plate 112 at the center of the exhaust port 111 in the width direction of the housing 1, the blade 2 can be pivotally connected to the connecting plate 112, which better reduces the probability of the blade 2 contacting the inner wall surface of the exhaust port 111, and the rotation of the blade 2 is smoother.

[0053] Specifically, the thickness direction of the connecting plate 112 is consistent with the width direction of the housing 1, and a protruding plate extends from the rear end of the connecting plate 112. The protruding plate has a connecting hole 113 and a notch 114. When there are multiple blades 2 and they are arranged along the height direction of the housing 1, there are correspondingly multiple protruding plates and they are spaced apart along the height direction of the housing 1.

[0054] In some embodiments, the inner peripheral surface of the connecting hole 113 is provided with a plurality of first protrusions 115, or the outer peripheral surface of the rotating shaft 21 is provided with a plurality of second protrusions.

[0055] The setting of the first protrusion 115 and / or the second protrusion effectively reduces the contact area between the rotating shaft 21 and the housing 1, resulting in lower sliding friction between the two, smoother rotation of the blade 2, and better exhaust of hot and humid gas in the cooking cavity 6.

[0056] like Figure 5As shown, the inner circumferential surface of the connecting hole 113 is provided with a plurality of first protrusions 115, which are uniformly distributed on the inner circumferential surface of the connecting hole 113. The first protrusions 115 are semispherical protrusions, and the outer surfaces thereof are spherical surfaces.

[0057] In some embodiments, the plurality of blades 2 are arranged in the height direction of the shell 1. In addition, the blades 2 are arc-shaped plates that are bent away from the exhaust passage 13 at the middle portions.

[0058] By arranging the plurality of blades 2, the size of each blade 2 is smaller and the weight of each blade 2 is lighter, so that each blade 2 can be rotated by a larger angle to ensure that the humid hot gas in the cooking cavity 6 is smoothly discharged. In addition, by arranging the blades 2 as the arc-shaped plates, the windward area of each blade 2 is larger, so that the rotation sensitivity of each blade 2 is higher at the same wind speed.

[0059] Specifically, as shown in Figs. 1 and 2, the number of the blades 2 is three, and the sizes of the three blades 2 are the same. In addition, the blades 2 are rectangular plates. Figures 1-4 and Figure 8 As shown in Figs. 1 and 2, the windward surfaces of the blades 2 are arc surfaces, and the extension direction of the central axis of the circumferential surface where the arc surfaces are located is consistent with the height direction of the shell 1. Figure 9 and Figure 10 As shown in Figs. 1 and 2, the windward surfaces of the blades 2 are arc surfaces, and the extension direction of the central axis of the circumferential surface where the arc surfaces are located is consistent with the height direction of the shell 1.

[0060] In some embodiments, the blades 2 extend in the width direction of the shell 1. The width of each blade 2 is L, and the thickness of each blade 2 is K, where 10mm≤L≤50mm and / or 1mm≤K≤5mm.

[0061] By arranging the width of each blade 2 to be greater than or equal to 10mm and the thickness of each blade 2 to be greater than or equal to 1mm, the blades 2 are not too light to effectively close the exhaust hole 111. By arranging the width of each blade 2 to be less than or equal to 50mm and the thickness of each blade 2 to be less than or equal to 5mm, the blades 2 are not too heavy to meet the exhaust requirement when the wind speed is low.

[0062] Specifically, as shown in Figs. 1 and 2, the blades 2 are rectangular plates. The width direction of each blade 2 is consistent with the height direction of the shell 1. The width of each blade 2 can be 10mm, 30mm or 50mm. The thickness of each blade 2 can be 1mm, 3mm or 5mm. Figure 8 In some embodiments, a plurality of through holes 23 are arranged on each blade 2. In addition, each blade 2 is spaced apart from part of the inner wall surface of the exhaust hole 111.

[0063] In some embodiments, a plurality of through holes 23 are arranged on each blade 2. In addition, each blade 2 is spaced apart from part of the inner wall surface of the exhaust hole 111.

[0064] By arranging the plurality of through holes 23 on the blade 2, and / or, arranging the blade 2 to be spaced apart from the inner wall surface of the part of the exhaust hole 111, when the airflow velocity in the exhaust passage 13 is low, the airflow can always be discharged to the outside through the through holes 23 and / or the gap between the blade 2 and the inner wall surface of the exhaust hole 111, effectively ensuring the smooth discharge of the humid hot gas in the cooking cavity 6.

[0065] Specifically, as shown in Figure 6 and Figure 7 , the blade 2 is spaced apart from the inner wall surface of the exhaust hole 111, as shown in Figure 10 , the blade 2 is provided with a plurality of through holes 23, and the plurality of through holes 23 are discretely arranged on the blade 2.

[0066] In some embodiments, in the projection plane perpendicular to the extension direction of the exhaust hole 111, the projected outer contour of the exhaust hole 111 has an area S1, and the projected area of the blade 2 when not subjected to an external force has an area S2, wherein 60%≤S2 / S1≤85%.

[0067] By arranging S2 / S1 to be greater than or equal to 60%, the problem of excessive loss of food aroma substances caused by excessive ventilation area of the blade 2 when not subjected to airflow blowing at the exhaust hole 111 is avoided, effectively ensuring the user experience. By arranging S2 / S1 to be less than or equal to 85%, the problem of excessive area ratio of the blade 2 is effectively avoided, thereby effectively preventing the risk of increased internal pressure of the cooking cavity 6 when the blade 2 is completely closed and cannot be opened.

[0068] Specifically, as shown in Figure 6 , when the blade 2 is not subjected to an external force, the blade 2 is arranged to be generally upright, and the shielding area of the blade 2 to the exhaust hole 111 is the largest, and the ratio of the total shielding area of the three blades 2 to the projected outer contour area of the exhaust hole 111 can be 60%, 70%, and 85%.

[0069] In some embodiments, the shell 1 comprises a connected upper cover body 11 and a lower cover body 12, the upper cover body 11 and the lower cover body 12 surround the formed exhaust passage 13, the upper cover body 11 is provided with the exhaust hole 111, and the side of the lower cover body 12 facing away from the upper cover body 11 surrounds the part of the cooking cavity 6, and the lower cover body 12 is provided with the air outlet hole 121 communicating the exhaust passage 13 and the cooking cavity 6.

[0070] The gas in the cooking cavity 6 enters the exhaust passage 13 through the air outlet hole 121, and then is discharged to the outside through the exhaust hole 111. And the shell 1 is divided into the upper cover body 11 and the lower cover body 12, which facilitates the installation of the heat dissipation fan 5 in the exhaust passage 13 formed therebetween, facilitates the heat dissipation of the motor 3, and at the same time, the structure of the cooking device is compact.

[0071] As shown in Figure 1As shown, the upper cover body 11 is connected above the lower cover body 12, a motor 3 is installed above the upper cover body 11, a motor shaft of the motor 3 passes through the upper cover body 11 and the lower cover body 12 in sequence and is coaxially connected with a hot air fan 4 located in a cooking cavity 6, a part of the motor shaft located in an exhaust passage 13 is connected with a cooling fan 5, and the upper cover body 11 is further provided with cooling holes between the body of the motor 3 and the cooling fan 5.

[0072] The cooking utensil according to the embodiment of the utility model comprises a motor 3, a hot air fan 4, a cooking cavity 6 and the cooking utensil exhaust assembly of any one of the above embodiments, the body of the motor 3 is installed on the side of the shell 1 away from the cooking cavity 6, and the hot air fan 4 is located in the cooking cavity 6 and is coaxially connected with the motor shaft of the motor 3.

[0073] The technical advantages of the cooking utensil according to the embodiment of the utility model are the same as those of the cooking utensil exhaust assembly according to the above embodiments, and details are not repeated here.

[0074] The exhaust control method of the cooking utensil according to the embodiment of the utility model comprises the following steps:

[0075] The motor 3 is started, and the rotating speed of the motor 3 is controlled to be n1 before the temperature in the cooking cavity 6 reaches a first target temperature.

[0076] When the temperature in the cooking cavity 6 reaches a second target temperature, the rotating speed of the motor 3 is controlled to be n2, wherein the second target temperature is greater than or equal to the first target temperature, and n2≤n1-100rpm.

[0077] The exhaust control method of the cooking utensil according to the embodiment of the utility model has the same technical advantages as those of the cooking utensil according to the above embodiments, and details are not repeated here.

[0078] Specifically, taking the cooking utensil as an air fryer as an example, the food is divided into a preheating / dampness removal stage and a temperature maintenance / aroma enhancement stage when being cooked in the cooking cavity 6, wherein the preheating / dampness removal stage is a preheating stage, the cooking cavity 6 gradually heats up from room temperature to the first target temperature, and the internal temperature of the food also gradually heats up, so the water in the food continuously evaporates, and a large amount of hot and humid gas is formed, so the dampness removal speed of the food needs to be improved to lay a foundation for the crispness and coloring of the food in the next stage. At this time, the rotating speed of the motor 3 is n1, and the blades 2 at the exhaust hole 111 are widely opened or completely opened, which is beneficial to dampness removal.

[0079] During the flavoring stage, the temperature of the cooking cavity 6 is further increased to a second target temperature, at which a large amount of sugar, starch, protein and oil in the food ingredients undergoes dehydration, oxidation, ring formation, cracking and other complex steps at high temperature to generate a large amount of flavor substances through Maillard reaction and caramelization reaction. At this time, the rotation speed is reduced to n2, and the exhaust hole 111 needs to reduce the exhaust area to reduce the exhaust volume, so that most of the flavoring ingredients are retained in the cooking cavity 6, thereby improving the flavor of the cooked food. In the above scheme, n1 is greater than or equal to n2+100rpm, the first target temperature is less than or equal to the second target temperature, and the exhaust hole 111 area is reduced to reduce the exhaust volume. Since the exhaust hole 111 is not a completely closed structure, it always maintains a certain exhaust volume to ensure continuous moisture removal and ensure a crisp texture. At the same time, the smaller area of the exhaust hole 111 can keep the food crisp while ensuring that the taste is not too dry, achieving a crisp outside and tender inside.

[0080] It should be noted that the opening angle a of the blade 2 is affected by the airflow velocity in the exhaust passage 13, and the airflow velocity is affected by the rotation speed of the motor 3. Therefore, under the same structure of the cooling fan 5 and the air duct, the faster the rotation speed of the motor 3, the larger the opening angle a of the blade 2. According to actual verification, the relationship between the rotation speed and a is approximately as shown in the following table:

[0081] Rotational speed / rpm ≤1500 1500～2000 2000～2500 2500～3000 ≥3000 Angle a ≤20° 20°～40° 40°-60° 60°-80° ≥80°

[0082] The above table data only shows the relationship between the rotation speed of the motor 3 and the opening angle a of the blade 2 in the structure of the embodiment. When the structure weight of the blade 2 or the motor 3, the cooling fan 5, the air duct and other related structures changes, the corresponding relationship also changes, but the positive proportional relationship between the larger rotation speed of the motor 3 and the larger opening angle of the blade 2 remains unchanged.

[0083] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0084] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, a feature defined with "first", "second" or "third" can include, explicitly or implicitly, at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0085] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited.

[0086] For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0087] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0088] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0089] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the changes, modifications, replacements and modifications of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A cooking appliance exhaust assembly, comprising: The utility model provides a kind of exhaust fan, comprising: Shell (1), exhaust passage (13) is equipped in the shell (1), and exhaust hole (111) is equipped on the shell (1) and is communicated with exhaust passage (13); Blade (2), the blade (2) is located in the exhaust hole (111) and is pivotally connected with the shell (1), and the blade (2) can be rotated relative to the shell (1) under the blowing of airflow in the exhaust passage (13).

2. The cooking appliance exhaust assembly of claim 1, wherein, One of the shell (1) and the blade (2) is provided with a rotating shaft (21), the other of the shell (1) and the blade (2) is provided with a connecting hole (113), the axial direction of the rotating shaft (21) is perpendicular to the height direction of the shell (1), the rotating shaft (21) is clearance fit in the connecting hole (113), and the blade (2) is pivotable relative to the shell (1) around the central axis of the rotating shaft (21).

3. The cooking appliance exhaust assembly of claim 2, wherein, The upper end of the blade (2) is provided with the rotating shaft (21), the shell (1) is provided with the connecting hole (113), and the shell (1) is further provided with a notch (114), the notch (114) extends to the inner circumferential surface of the connecting hole (113) along the radial direction of the connecting hole (113), the minimum width of the notch (114) is smaller than the diameter of the rotating shaft (21), and the rotating shaft (21) is adapted to be fit in the connecting hole (113) through the notch (114).

4. The cooking appliance exhaust assembly of claim 3, wherein, The connecting plate (112) extending along the height direction of the shell (1) is arranged in the exhaust hole (111), the connecting plate (112) is located at the central position of the exhaust hole (111) in the width direction of the shell (1), and the connecting plate (112) is provided with the connecting hole (113); The upper end surface of the blade (2) is provided with a mounting groove (22), the mounting groove (22) penetrates the blade (2) along the thickness direction of the blade (2), the width of the mounting groove (22) is greater than the thickness of the connecting plate (112), and the rotating shaft (21) is arranged in the mounting groove (22).

5. The cooking appliance exhaust assembly of claim 2, wherein, The inner circumferential surface of the connecting hole (113) is provided with a plurality of first protrusions (115), or the outer circumferential surface of the rotating shaft (21) is provided with a plurality of second protrusions.

6. The cooking appliance exhaust assembly of claim 1, wherein, The blade (2) has a plurality of blades arranged in sequence along the height direction of the shell (1); And / or, the blade (2) is an arc-shaped plate with the middle part being bent away from the exhaust passage (13).

7. The cooking appliance exhaust assembly of claim 1, wherein, The blade (2) extends along the width direction of the shell (1), the width of the blade (2) is L, and the thickness of the blade (2) is K, wherein 10mm≤L≤50mm, and / or 1mm≤K≤5mm.

8. The cooking appliance vent assembly of any one of claims 1-7, wherein, A plurality of through holes (23) are arranged on the blade (2), and / or the blade (2) is spaced apart from part of the inner wall surface of the exhaust hole (111).

9. The cooking appliance exhaust assembly of claim 8, wherein, In the projection plane perpendicular to the extension direction of the exhaust hole (111), the area of the projected outer contour of the exhaust hole (111) is S1, and the area of the projection of the blade (2) when not subjected to external force is S2, wherein 60%≤S2 / S1≤85%.

10. The cooking appliance exhaust assembly of claim 1, wherein, The shell (1) comprises an upper cover body (11) and a lower cover body (12) connected together, the upper cover body (11) and the lower cover body (12) surround a formed exhaust passage (13), the upper cover body (11) is provided with the exhaust hole (111), the lower cover body (12) is provided with an air outlet hole (121) on the side away from the upper cover body (11) and surrounding a formed part cooking cavity (6), the air outlet hole (121) communicates the exhaust passage (13) and the cooking cavity (6).

11. A cooking appliance characterized by, The cooking utensil exhaust assembly comprises a motor (3), a hot air fan (4), a cooking cavity (6) and the cooking utensil exhaust assembly according to any one of claims 1-10, the motor body of the motor (3) is mounted on the side of the shell (1) away from the cooking cavity (6), and the hot air fan (4) is located in the cooking cavity (6) and connected coaxially with the motor shaft of the motor (3).

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