WO2024026959A1 - 一种锅体、空气炸锅及空气循环系统 - Google Patents

一种锅体、空气炸锅及空气循环系统 Download PDF

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Publication number
WO2024026959A1
WO2024026959A1 PCT/CN2022/116021 CN2022116021W WO2024026959A1 WO 2024026959 A1 WO2024026959 A1 WO 2024026959A1 CN 2022116021 W CN2022116021 W CN 2022116021W WO 2024026959 A1 WO2024026959 A1 WO 2024026959A1
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WIPO (PCT)
Prior art keywords
air
cavity
flow guide
heat dissipation
pot body
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PCT/CN2022/116021
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English (en)
French (fr)
Inventor
赫鲁什库·伊利亚
张梅
张茜
郑晓峰
Original Assignee
广州斯腾电子实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202210936492.XA external-priority patent/CN115177163A/zh
Priority claimed from CN202222053303.2U external-priority patent/CN218105636U/zh
Priority claimed from CN202222070884.0U external-priority patent/CN219374435U/zh
Application filed by 广州斯腾电子实业有限公司 filed Critical 广州斯腾电子实业有限公司
Publication of WO2024026959A1 publication Critical patent/WO2024026959A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
    • A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
    • A47J37/0641—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements with forced air circulation, e.g. air fryers

Definitions

  • the invention belongs to the technical field of cooking appliances, specifically a pot body, an air fryer and an air circulation system.
  • the air fryer is a household appliance that uses high-speed air circulation technology to cook food. It generates high-temperature air through rapid heating by a baking device, and then uses a fan to blow the high-temperature air into the pot to heat the food, so that the hot air can be heated in a closed space. Circulation, forming a rapidly circulating heat flow inside the food baking pan, using the fat of the food itself to fry the food, thereby dehydrating the food and making the surface golden and crispy, achieving the frying effect. Because its cooking method with less or no oil is healthier and more convenient, it is becoming more and more popular among people.
  • the present invention provides a pot body, an air fryer and an air circulation system.
  • the air fryer combines the requirements of the kitchen environment, food size and other requirements by designing the accommodation cavity into a rectangular parallelepiped shape, so that the air fryer can be air fried.
  • the pot is more space-saving and easier to place food.
  • Comprehensive use shows that the rectangular pot shape of the present application saves more than 40% of space than the circular pot.
  • the heating cavity is The hot air circulates to form an air vortex, achieving high-speed circulation of air, allowing the heat in the heating chamber to evenly spread and smoothly take away the moisture in the food, achieving better cooking results.
  • the first object of the present invention is to provide a pot body, which includes a pot bottom and side walls surrounding the pot bottom.
  • the pot bottom and the side walls form an accommodation cavity.
  • the accommodation cavity has a rectangular structure.
  • the length of the accommodation cavity is a, a ⁇ 80cm.
  • the width is b, b ⁇ 10cm
  • k 2 ⁇ 2.5.
  • the second object of the present invention is to provide an air fryer, which includes any one of the above pot bodies, and also includes a machine body and a flow guide cover arranged in the machine body. After the pot body is put into the machine body, the flow guide cover seals the pot. The upper end opening of the body forms a heating cavity;
  • the inner surface of the air inlet forms a guide curved surface around the air inlet.
  • the air guide surface directs the hot air in the heating cavity from the air inlet. Position guide around the heating chamber.
  • the intersection point between the rotation axis of the lower fan blade and the top surface of the diversion separator is B. Take any point on the inner edge of the diversion septum as A.
  • the line segment AB is a line segment on the diversion curve. Define point A on the line
  • the angle between the tangent direction on segment AB and the horizontal plane is the derived angle ⁇ , and the value range of the derived angle ⁇ is 45° ⁇ 90°.
  • the line segment AB on the diversion surface is a curve or a polyline.
  • the distance between the plane where the highest point of the lower fan blades is located and the top of the inner side of the guide partition is h
  • the value range of h is 0 ⁇ h ⁇ 30.
  • the value range of h is 0 ⁇ h ⁇ 10.
  • the inner side of the guide shroud includes a horizontal plane area in the middle and a flow guide curved surface located on the periphery of the horizontal plane area.
  • the flow guide curved surface gradually slopes downward from the inside to the outside.
  • the air inlet is located in the horizontal plane area, and the rotation of the lower fan blades The area corresponds to the horizontal plane area.
  • the flow guide separator has an integrated structure
  • the flow guide septum has an inverted bowl-shaped structure
  • the flow guide curved surface is located on the inner side of the flow guide septum, and the flow guide curved surface gradually slopes downward from the inside to the outside.
  • the guide cover is a split structure, including an isolation cover that closes the upper opening of the pot body and a guide plate located below the isolation cover.
  • the guide plate has an inverted bowl-shaped structure, the lower fan blade is located below the guide plate, and the guide curved surface Located on the inner side of the guide plate, the flow guide surface gradually slopes downward from the inside to the outside.
  • first heat dissipation cavity and a second heat dissipation cavity arranged in the body and connected with each other.
  • the first heat dissipation cavity is located above the heating cavity, and the second heat dissipation cavity is located below the heating cavity.
  • a heating pipe is provided in the heating cavity. , the heating cavity is connected with the first heat dissipation cavity through the air inlet, and the bottom of the second heat dissipation cavity is provided with heat dissipation holes.
  • a motor is provided above the first heat dissipation cavity.
  • the rotating shaft of the motor penetrates the first heat dissipation cavity and passes through the air guide cover through the air inlet.
  • the upper fan blade and the lower fan blade are coaxially installed on the rotating shaft. It is located in the first heat dissipation cavity, and the lower fan blade is located in the heating cavity.
  • a cold air inlet is provided above the first heat dissipation cavity, the first heat dissipation cavity and the second heat dissipation cavity are connected to form a cold air circulation cavity, the heating cavity forms a hot air circulation cavity, and the cold air circulation cavity wraps the hot air circulation cavity.
  • the third object of the present invention is to provide an air circulation system for an air fryer, including hot air circulation and cold air circulation;
  • the hot air generated by the lower fan blade flows to the surroundings of the heating cavity through the guide surface, and at the same time, a low-pressure area is formed directly below the lower fan blade.
  • the air that spreads around the heating cavity gathers from the bottom to the middle, and the air spirals upward in the low-pressure area in the middle. After rising to the lower fan blade, it is thrown around to form a hot air circulation;
  • the rotation of the upper fan blade blows the cold air entering the first heat dissipation cavity around and flows to the second heat dissipation cavity, forming a cold air circulation surrounding the heating cavity.
  • the invention limits the shape of the guide partition and the lower fan
  • the above-mentioned limitation of the position of the leaves in the guide partition is conducive to reducing the circulation resistance of the air, making the hot air in the heating cavity circulate more evenly, and achieving better cooking effects.
  • the present invention forms a cold air circulation cavity through the interconnected first heat dissipation cavity and the second heat dissipation cavity.
  • the cold air circulation cavity wraps the heating cavity, which not only plays a heat dissipation role, but also greatly reduces the cost of various components inside the air fryer.
  • the hot air generated by the lower fan blade flows to the surroundings of the hot air circulation cavity through the guide curved surface, especially to both ends of the length direction of the pot.
  • a low-pressure area is formed directly below the lower fan blade.
  • the air that spreads around the hot air circulation cavity gathers from the bottom to the middle.
  • the air spirals up in the low-pressure area in the middle. After rising to the lower fan blade, it is thrown around, forming a high-speed circulation of hot air.
  • Figure 1 is a schematic top view of a circular pot body in the prior art and the pot body of the present invention
  • Figure 2 is a schematic diagram of the circular pot body in the prior art and the pot body of the present invention placed in a corner of the kitchen;
  • Figure 3 is a perspective view of the pot body of the present invention.
  • Figure 4 is a top view of the pot body of the present invention.
  • FIG. 5 is a structural diagram of the air fryer of the present invention.
  • Figure 6 is a cross-sectional view of the air fryer of the present invention.
  • Figure 7 is an enlarged view of the heating cavity structure of the air fryer of the present invention.
  • Figure 8 is a cross-sectional view (1) of the diversion area of the air fryer of the present invention.
  • Figure 9 is a cross-sectional view (2) of the diversion area of the air fryer of the present invention.
  • Figure 10 is a cross-sectional view (3) of the diversion area of the air fryer of the present invention.
  • Figure 11 is a structural diagram of the integrated flow guide cover of the air fryer of the present invention.
  • Figure 12 is an air flow guide diagram (1) in the heating chamber of the air fryer of the present invention.
  • Figure 13 is an air flow guide diagram (2) in the heating cavity of the air fryer of the present invention.
  • Figure 14 is a structural diagram of the split flow guide cover of the air fryer of the present invention.
  • 1-pot body 11-first side wall, 12-second side wall, 13-third side wall, 14-fourth side wall, 15-handle, 2-body, 21-heating pipe, 3- Guide cover, 31-air inlet, 32-air outlet, 33-guide curved surface, 34-guide cut-in area, 36-horizontal area, 37-spacer, 38-guide plate, 4-heating cavity, 5 -Lower fan blade, 6-first heat dissipation cavity, 7-second heat dissipation cavity, 8-motor, 9-shaft, 10-upper fan blade.
  • Figure 2 shows the placement positions of the circular pot body in the prior art and the rectangular pot body of the present invention in a corner of the kitchen.
  • the entry and exit space of the pot body of the air fryer is defined as the working area, so the working area of the pot body of the present invention is The width of the pot is 200mm, and the width of the working area of the circular pot in the prior art is 320mm. From this, it can be seen that the pot of the present utility model can save more than 40% of the space for a pot with the same capacity.
  • the pot body 1 of the present utility model includes a pot bottom and a side wall surrounding the pot bottom.
  • the pot bottom and the side walls form an accommodation cavity.
  • the ratio k of the length a to the width b of the accommodation cavity is 2 to 2.5.
  • the side wall includes a first side wall 11, a second side wall 12, a third side wall 13 and a fourth side wall 14 that are fixedly connected in sequence.
  • the first side wall 11 and the third side wall 13 are relatively arranged, the second side wall 12 and the fourth side wall 14 are arranged oppositely, the intersection of adjacent side walls has a smooth transition, at least part of the first side wall 11 and the third side wall 13 have relatively parallel vertical surfaces, Compared with the fully curved surface design, the volume of the accommodation cavity enclosed by the vertical surface is larger, which is more suitable for the kitchen environment.
  • Comprehensive use shows that the rectangular pot body shape of the present application saves up to 40% more space than the circular pot body.
  • first side wall 11 and the third side wall 13 are side walls in the length direction of the pot body
  • second side wall 12 and the fourth side wall 14 are side walls in the width direction of the pot body.
  • the third side wall is At least part of the side wall 11 and the third side wall 13 are vertical surfaces parallel to each other, while the second side wall 12 and the fourth side wall 14 are not limited, and they can both be arc surfaces or both vertical surfaces. Or one is an arc surface and the other is a vertical surface. Therefore, the shape of the pot body can be rectangular, elliptical, strip, etc.
  • At least part of the second side wall 12 and/or the fourth side wall 14 is a vertical surface.
  • the vertical side wall of a pot with the same capacity saves space compared to the arc side wall.
  • the vertical side wall can make full use of the space and avoid unnecessary waste of available space. Therefore, this
  • at least one of the second side wall 12 and the fourth side wall 14 includes a vertical surface. More preferably, both the second side wall 12 and the fourth side wall 14 are vertical surfaces.
  • a handle 15 is fixed on the outer surface of the second side wall 12, and the pot body 1 can be pulled out or pushed into the air fryer through the handle 15.
  • the present invention also provides an air fryer, including a body 2 and the above-mentioned pot body 1 arranged in the body.
  • the body 2 is provided with a flow guide cover 3, and the pot body 1 is placed in the body 2.
  • the flow guide cover 3 closes the upper opening of the pot body 1 to form a heating cavity 4;
  • the flow guide cover 3 and the pot body 1 both have a rectangular structure, and the heating cavity 4 formed after the flow guide cover 3 seals the pot body 1 is also formed. It is similar to a rectangular structure.
  • the rectangular structure referred to in the present invention is any regular shape with length and width (such as rectangular, oval, strip, etc.).
  • the pot body is designed into a rectangular structure so that it can hold Put food of a certain length, such as a whole fish, kebabs of a certain length, long strips of bread, etc., to ensure the integrity of the food, and the overall size of the air fryer is more suitable for the kitchen environment.
  • the air inlet 31 is provided in the middle of the air inlet 3, and the lower fan blade 5 is provided below the air inlet 31.
  • the inner surface of the air inlet 3 is surrounded by the air inlet. 31 forms a guide curved surface 33, which is used to guide the hot air generated by the operation of the lower fan blade 5 to the surroundings of the heating cavity 4 to achieve uniform heat circulation; in the present invention, the plane and the plane where the lowest point of the lower fan blade 5 is located are defined.
  • the area enclosed by the plane at the highest point and the guide cover 3 is the guide cut-in area 34 (that is, the area surrounded by A'O'B' in Figure 8).
  • This area is mainly caused by the centrifugal force of the air on the lower fan blade 5
  • the air deceleration resistance of the air guide cut-in area 34 is larger than that of other areas.
  • the size of the air guide cut-in area 34 directly affects the air circulation in the heating chamber 4. Effect.
  • the intersection point of the rotation axis of the lower fan blade 5 and the top surface of the guide cover 3 is defined as B in the present invention.
  • Take any point on the lower edge of the inner side of the guide cover 3. is A
  • the line segment AB is the line segment on the inner surface of the diversion cover 3.
  • the angle between the tangent direction of the point A on the line segment AB and the horizontal plane is defined as the derived angle ⁇ .
  • the value range of the derived angle is 45° ⁇ 90°
  • the resistance to air circulation is smaller, and the closer the lead-out angle is to 90°, the better the air circulation effect in the pot body 2.
  • the intersection point of the horizontal plane passing through point A and the rotation axis of the lower blade 5 is defined as O, and the air guide separator 3 is cut through the plane passing through three points AOB to obtain the simplified surface AOBC as shown in Figure 8, where Point C is the vertical intersection passing through points A and B.
  • Line BO is the rotation axis of the lower fan blade 5.
  • the area surrounded by the three points ABO is the diversion area.
  • the diversion area includes the diversion cut-in area A' mentioned above. O'B'.
  • the line segment AB on the inner surface of the flow guide cover 3 is a curve or a polyline.
  • the line segment AB is composed of polylines.
  • line segment AB is composed of curves. It has been verified through calculation that the closer the line segment AB is to a smooth curve, the better the air circulation in the heating chamber 4 is.
  • line segment AB is selected as the curve, and the lead-out angle ⁇ is 90°, and the diversion cuts into the area A'O'B'
  • the AB line segment is the optimal curve at this time, and the curve AB is closer to the ellipse with AO and BO as the semi-axes.
  • the diversion area AOB occupies the cross-section AOBC
  • the area is 70%-90%; when the diversion area AOB accounts for 78%-80% of the area of the cross-section AOBC, the air circulation effect is the best and the cooking effect is the best.
  • the distance between the plane where the highest point of the lower fan blade 5 is located and the top of the inner side of the guide cover 3 is h, and h increases.
  • h the distance between the plane where the highest point of the lower fan blade 5 is located and the top of the inner side of the guide cover 3
  • h increases.
  • the diversion cut-in area 34 also increases, and the deceleration of the air also increases.
  • the value range of h is 0 ⁇ h ⁇ 30, the air circulation effect is better.
  • the value range of h is 0 ⁇ h ⁇ 10.
  • the thermal circulation effect of the air in the heating chamber 4 is the best.
  • the present invention limits the shape of the guide shroud and limits the position of the lower fan blade in the guide direction.
  • the above-mentioned restrictions on the position in the flow separator cover are beneficial to reducing the circulation resistance of the air, making the hot air circulation in the heating chamber more uniform, and achieving better cooking results.
  • the flow guide cover is an integrally formed part, and the flow guide cover 3 has an inverted bowl-shaped structure.
  • the inner side of the flow guide cover 3 includes a horizontal plane area 36 in the middle and a horizontal plane area 36 in the middle.
  • the flow guide surface 33 on the periphery of the area 36 gradually slopes downward from the inside to the outside, thereby gradually guiding the hot air to both ends of the length direction of the heating chamber 4.
  • the air inlet 31 is located in the horizontal area 36, and the rotation of the lower fan blade 5
  • the area is adapted to the horizontal plane area 36, which can be understood as the horizontal plane area 36 is a circular area, and the area of the circular area is the same as the area of the lower fan blade 5 rotation area.
  • the air guide cover 3 is also provided with an air outlet 32 , which is connected with the outside of the body 2 .
  • the air outlet 32 is used to discharge the food moisture in the pot body 2 .
  • the vertical distance between the plane where the highest point of the lower fan blade 5 is located and the horizontal plane area 36 is h.
  • h is The value range is 0 ⁇ h ⁇ 10. When h is within this value range, the thermal circulation effect of the air in the heating chamber 4 is better.
  • the flow guide cover 3 in the present invention has two functions, one is the shield function, and the other is the flow guide function. Based on the above two functions, the flow guide cover 3 can also be designed to be split.
  • the structure, as shown in Figure 14, the flow guide cover 3 can be split into two parts: the cover 37 and the guide plate 38.
  • the cover 37 is closed on the upper opening of the pot body 2 to form a closed heating cavity 4, and the flow guide is
  • the plate 38 is arranged below the partition 37, and the lower fan blade 5 is arranged below the deflector 38.
  • the deflector 38 plays a role in guiding the flow.
  • the inner surface of the deflector 38 forms a deflection curved surface 33.
  • the lower fan blade 5 The flow guide cut-in area 34 is enclosed between the lowest point, the highest point and the guide plate 38.
  • the structure of the flow guide cut-in area can be referred to the integrated flow guide cover, which will not be described again.
  • the body 2 of the air fryer of the present invention is provided with a first heat dissipation chamber 6 and a second heat dissipation chamber 7 that communicate with each other.
  • the first heat dissipation chamber 6 is located above the heating chamber 4, and the second heat dissipation chamber 7 is located above the heating chamber 4.
  • the cavity 7 is located below the heating cavity 4.
  • the heating cavity 4 is provided with a heating pipe 21.
  • the heating cavity 4 is connected to the first heat dissipation cavity 6 through the air inlet 31.
  • the bottom of the second heat dissipation cavity 7 is provided with heat dissipation holes.
  • a cold air inlet is provided above the first heat dissipation cavity 6.
  • the first heat dissipation cavity 6 and the second heat dissipation cavity 7 are connected to form a cold air circulation cavity.
  • a heating pipe 21 is provided in the heating cavity 4 to form a hot air circulation cavity.
  • the cold air circulation cavity Wrapping the hot air circulation cavity not only plays a heat dissipation role, but also greatly reduces the temperature rise of the components inside the air fryer and the surface of the machine.
  • a motor 8 is provided above the first heat dissipation cavity 6.
  • the rotating shaft 9 of the motor 8 penetrates the first heat dissipating cavity 6 and passes through the air guide cover 3 through the air inlet 31.
  • the rotating shaft 9 has a total of An upper fan blade 10 and a lower fan blade 5 are installed on the shaft.
  • the upper fan blade 10 is located in the first heat dissipation cavity 6, and the lower fan blade 5 is located in the heating cavity 4.
  • the upper fan blade 10 is used to circulate the air in the cold air circulation cavity.
  • the lower fan blade 5 is used to circulate the air in the hot air circulation cavity.
  • the present invention also provides an air circulation system, including hot air circulation and cold air circulation.
  • the hot air generated by the lower fan blade 5 flows to the surroundings of the hot air circulation cavity through the diversion area 34.
  • a low-pressure area is formed just below the fan blade 5.
  • the air that spreads around the hot air circulation cavity gathers from the bottom to the middle.
  • High-speed circulation; the rotation of the upper fan blade 10 will blow the cold air entering the first heat dissipation cavity 6 around and flow to the second heat dissipation cavity 7, forming a high-speed circulation of the cold air surrounding the heating cavity.
  • the working principle of the air circulation system of the present invention is: cold air circulates mainly in the first heat dissipation cavity 6 and the second heat dissipation cavity 7, and the upper fan blade 10 controls the air flow circulation in the first heat dissipation cavity 6.
  • the cold air enters the first heat dissipation cavity 6 from the cold air inlet at the top of the upper shell of the body 2, spreads around under the action of the upper fan blades 10 and flows to the second heat dissipation cavity 7, and finally the cold air flows from the bottom of the second heat dissipation cavity 7
  • the heat dissipation holes are discharged, and the cold air forms a cold air circulation surrounding the heating cavity in the first heat dissipation cavity 6 and the second heat dissipation cavity 7, which plays a heat dissipation role and greatly reduces the damage to the internal components and surfaces of the air fryer. temperature;
  • Hot air circulates in the heating chamber 4 for cooking.
  • the lower fan blade 5 rotates and uses centrifugal force to spread the air entering from the air inlet 31 to the surroundings.
  • the hot air is directed to the surroundings and At both ends of the heating cavity 4 in the length direction, due to the air being thrown away at this time, a low-pressure area will be formed just below the lower fan blade 5.
  • the air that spreads to the surroundings and both ends in the length direction of the heating cavity is gathered from the bottom to the middle, so that at The air circulation shown in Figure 6, Figure 12 and Figure 13 is formed inside the heating cavity.

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Abstract

一种锅体、空气炸锅及空气循环系统，空气炸锅包括机体（2）和锅体（1），锅体（1）呈长方形结构，锅体（1）长度与宽度的比值为k，k＝1.5～5，机体（2）内设有导流隔罩（3），锅体（1）放入机体（2）后，导流隔罩（3）封闭锅体（1）的上端开口形成加热腔（4）；导流隔罩（3）的中间位置设有进风口（31）和下扇叶（5），下扇叶（5）的旋转轴与导流隔罩（3）顶面的交点为B，取导流隔罩（3）内侧面边缘上的任意一点为A，AB为导流隔罩（3）内侧面上的线段，定义A点在线段AB上的切线方向与水平面夹角为导出角α，导出角的取值范围为45°≤α≤90°。通过锅体（1）结构及导流隔罩（3）的结构设计使空气炸锅可容纳大部分的食物，保证食物的完整性，同时空气在加热腔内形成高速旋转的漩涡，解决了长方形结构锅体热均匀的问题。

Description

一种锅体、空气炸锅及空气循环系统
本公开基于申请号为202222070884.0，申请日为2022年08月05日，申请号为202222053303.2，申请日为2022年08月05日以及申请号为202210936492.X，申请日为2022年08月05日的三篇中国专利申请提出，并要求该三篇中国专利申请的优先权，该三篇中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明属于烹饪器具技术领域，具体为一种锅体、空气炸锅及空气循环系统。
背景技术
空气炸锅是利用高速空气循环技术来烹饪食物的一种家用电器，其通过烘烤装置快速加热产生高温空气，然后用风机将高温空气吹到锅内加热食物，使热空气在封闭的空间内循环，在食物烤锅内部形成急速循环的热流，利用食物本身的油脂煎炸食物，从而使食物脱水，表面变得金黄酥脆，达到煎炸的效果。由于其少油或不用油的烹饪方式更健康和便捷、正越来越受人们的欢迎。
要实现空气的高速循环，一种较为简单的方法是利用风机给空气一定角速度，在一个圆形或类圆形的空间里，在圆形或类圆形壁面的作用下会形成的气体旋涡，从而实现空气高速循环。现有的市面上的空气炸锅大多数利用这种原理，这就要求空气炸锅必须要设计成圆形或类圆形的。这一局限性使得很多情况下不能很好的适应厨房环境、食物的形状大小。比如一整条鱼、烤肉串、并排的面包等等在圆形烤锅里不好摆放，往往都要将食物切开或将烤锅体积做的很大，很占空间不便于厨房的摆放，整体的影响了厨房环境与人的交互，不便于使用。
发明内容
为解决上述背景技术中的问题，本发明提供一种锅体、空气炸锅及空气循环系统，该空气炸锅结合厨房环境、食物尺寸等要求，通过将容纳腔设计成长方体形状，使空气炸锅更省空间和更便于摆放食物，经综合使用显示，本申请 的长方形锅体形状比圆形锅体节省空间高达40％以上，且通过导流隔罩的结构优化设计，使加热腔内的热空气循环形成空气漩涡，实现了空气的高速循环，让加热腔内的热量能均匀散播并顺利带走食物中的水分，取得较好的煮食效果。
本发明的第一个目的是提供一种锅体，包括锅底以及环绕锅底的侧壁，锅底与侧壁形成容纳腔，容纳腔呈长方形结构，容纳腔的长度为a，a≤80cm,宽度为b,b≥10cm,容纳腔的长度a与宽度b的比值为k,k＝1.5～5。
优选的，k＝2～2.5。
优选的，容纳腔的宽度b＝10～50cm。
本发明的第二个目的是提供一种空气炸锅，包括上述任意一项锅体，还包括机体和设置在机体内的导流隔罩，锅体放入机体后，导流隔罩封闭锅体的上端开口形成加热腔；
导流隔罩的中间位置设有进风口，进风口的下方设置有下扇叶，导流隔罩的内侧面上围绕进风口形成导流曲面，导流曲面将加热腔内的热风由进风口位置导向加热腔的四周。
进一步的，下扇叶的旋转轴与导流隔罩顶面的交点为B，取导流隔罩内侧面边缘上的任意一点为A，线段AB为导流曲面上的线段，定义A点在线段AB上的切线方向与水平面夹角为导出角α，导出角α的取值范围为45°≤α≤90°。
进一步的，导流曲面上的线段AB为曲线或多段线。
进一步的，下扇叶的型号及大小固定时，下扇叶的最高点所在的平面与导流隔罩的内侧面顶部的距离为h，h的取值范围为0＜h＜30。
优选的，h的取值范围为0＜h＜10。
进一步的，导流隔罩的内侧面包括位于中间的水平面区域和位于水平面区域外围的导流曲面，导流曲面由内到外逐渐向下倾斜，进风口位于水平面区域内，下扇叶的转动区域与水平面区域相适应。
进一步的，导流隔罩为一体式结构，导流隔罩呈倒碗状结构，导流曲面位于导流隔罩的内侧面上，导流曲面由内到外逐渐向下倾斜。
进一步的，导流隔罩为分体式结构，包括封闭锅体上端开口的隔离罩和位于隔离罩下方的导向板，导向板呈倒碗状结构，下扇叶位于导向板的下方，导流曲面位于导向板的内侧面上，导流曲面由内到外逐渐向下倾斜。
进一步的，还包括设置在机体内且相互连通的第一散热腔和第二散热腔，第一散热腔位于加热腔的上方，第二散热腔位于加热腔的下方，加热腔内设有发热管，加热腔通过进风口与第一散热腔连通，第二散热腔的底部设有散热孔。
进一步的，第一散热腔的上方设有电机，电机的转轴贯穿第一散热腔，并经进风口穿过导流隔罩，转轴上共轴安装有上扇叶和下扇叶，上扇叶位于第一散热腔内，下扇叶位于加热腔内。
进一步的，第一散热腔的上方设有冷风进口，第一散热腔和第二散热腔连通形成冷空气循环腔，加热腔形成热空气循环腔，冷空气循环腔包裹热空气循环腔。
本发明的第三个目的是提供一种空气炸锅的空气循环系统，包括热空气循环和冷空气循环；
下扇叶产生的热风经导流曲面流向加热腔的四周，同时在下扇叶的正下方形成低压区域，散开到加热腔四周的空气从底部向中间收拢，空气在中间的低压区域螺旋上升，上升至下扇叶后被甩向四周，形成热空气循环；
上扇叶旋转将进入第一散热腔内部的冷空气向四周吹散，并流向第二散热腔，形成包裹加热腔的冷空气循环。
与现有技术相比，本发明的有益效果为：
(1)本发明通过将锅体设计成长方形结构，使空气炸锅更适合厨房的尺寸和环境，且将容纳腔的长宽比设计成k＝1.5～5，可容纳大部分的食物,满足用户的正常需求；长方形结构的锅体相对于现有技术中的圆形锅体更节省厨房的空间，且可适应多种食物的尺寸，保证食物的完整性。
(2)本发明通过设置导出角α的取值范围为：45°≤α≤90°，h的取值范围为0＜h＜30，限制了导流隔罩的形状，并限定了下扇叶在导流隔罩内的位置，上述限定有利于降低空气的循环阻力，使加热腔内的热空气循环更均匀，取得较佳的煮食效果。
(3)本发明通过相互连通的第一散热腔和第二散热腔形成冷空气循环腔，冷空气循环腔包裹加热腔，起到散热作用的同时极大降低了空气炸锅内部各元器件和机体表面的温升。
(4)本发明工作时下扇叶产生的热风经导流曲面流向热空气循环腔的四周， 尤其流向锅体长度方向的两头，同时由于空气被甩开，在下扇叶的正下方形成低压区域，散开到热空气循环腔四周的空气从底部向中间收拢，空气在中间的低压区域螺旋上升，上升至下扇叶后被甩向四周，形成热空气的高速循环，在此空气循环的作用下能将发热管产生的热量均匀的散开到整个锅体内，并将食物产生的水分从出风口排出，最终实现加热腔内空气的高速循环，取得煮食均匀、外焦里嫩的较好的煮食效果。
附图说明
为了更清楚的说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单的介绍，显而易见的，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它附图。
图1为现有技术中圆形锅体和本发明的锅体俯视示意图；
图2为现有技术中的圆形锅体和本发明的锅体厨房一角摆放的示意图；
图3为本发明锅体的立体图；
图4为本发明锅体的俯视图；
图5为本发明空气炸锅组成结构图；
图6为本发明空气炸锅的剖面图；
图7为本发明空气炸锅的加热腔结构放大图；
图8为本发明空气炸锅的导流区域截面图(一)；
图9为本发明空气炸锅的导流区域截面图(二)；
图10为本发明空气炸锅的导流区域截面图(三)；
图11为本发明空气炸锅的一体式导流隔罩结构图；
图12为本发明空气炸锅加热腔内的气流导向图(一)；
图13为本发明空气炸锅加热腔内的气流导向图(二)；
图14为本发明空气炸锅的分体式导流隔罩结构图；
其中：1-锅体，11-第一侧壁，12-第二侧壁，13-第三侧壁，14-第四侧壁，15-把手，2-机体，21-发热管，3-导流隔罩，31-进风口，32-出风口，33-导流曲面，34-导流切入区域，36-水平面区域，37-隔罩，38-导流板，4-加热腔，5-下扇叶，6-第一散热腔，7-第二散热腔，8-电机，9-转轴，10-上扇叶。
具体实施方式
下面将结合本发明中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通的技术人员在没有做出创造性劳动的前提下所获得的所有其它实施例，都属于本发明的保护范围。
下面结合附图1至附图14以及具体实施例详细论述本发明。
如图1所示为现有技术中的圆形结构锅体和本发明中的长方形结构锅体的对比示意图，假设本发明的长方形锅体的尺寸为400*200mm,现有技术中的圆形锅体的尺寸为φ＝320mm，如果两者的高度相同，经计算两者的容量是一样的。图2所示为现有技术中的圆形锅体和本实用新型的长方形锅体在厨房一角的放置位置，定义空气炸锅的锅体进出空间为工作区域，则本发明锅体的工作区域的宽度为200mm,现有技术中圆形锅体的工作区域的宽度为320mm，由此可知，同样容量的锅体，本实用新型的锅体可节省40％以上的空间。
具体的，如图3-4所示，本实用新型的锅体1包括锅底以及环绕所述锅底的侧壁，锅底与侧壁形成容纳腔，容纳腔呈长方形结构，容纳腔的长度为a，a≤80cm,宽度为b,b≥10cm,容纳腔的长度a与宽度b的比值为k,k＝1.5～5。
优选的，容纳腔的长度a与宽度b的比值k＝2～2.5。
优选的，容纳腔的宽度b＝10～50cm。
下面以面包食物为例对上述长方形锅体的尺寸进行说明，一般一个面包的宽度在10～15cm之间，若取最大宽度15cm，并排放置三个面包的话，总宽度为45cm,而一般的家庭橱柜深度为55～80cm之间，由此可知，将容纳腔的长宽比设计成k＝1.5～5，可容纳大部分的食物，如宽度设计成45cm，则长度可设计成68-80cm的范围,如宽度设计成15cm，则长度可设计成23-75cm的范围，实际设计过程中根据食物的尺寸去合理的布置锅体长度和宽度的尺寸，使锅体可满足大部分用户的正常需求；经煮食效果、使用体验等综合考虑，k＝2～2.5最为理想；以面包并排数量为参考，则b取值范围10～50cm较为理想；且该尺寸的锅体可适应绝大多数圆形锅体不能摆下的食物，比如该尺寸的锅体可摆下一整条鱼、具有一定长度的烤肉串、一整个鸡鸭等食物，保证了食物的完整性，美观度和口感均较好。
具体的，如图3所示，侧壁包括依次固定连接的第一侧壁11、第二侧壁12、第三侧壁13和第四侧壁14，第一侧壁11与第三侧壁13相对设置，第二侧壁12和第四侧壁14相对设置，相邻侧壁的相交处圆滑过渡，第一侧壁11和第三侧壁13上至少部分具有相对平行的竖直面，相对于全曲面设计，竖直面围成的容纳腔的体积更大，更适合厨房环境，经综合使用显示，本申请的长方形结构的锅体形状比圆形锅体节省空间高达40％以上。
需要说明的是，第一侧壁11和第三侧壁13是锅体长度方向的侧壁，第二侧壁12和第四侧壁14是锅体宽度方向的侧壁，为了节省空间，第一侧壁11和第三侧壁13上至少部分是相互平行的竖直面，而对第二侧壁12和第四侧壁14不做限定，可都为圆弧面或都为竖直面或一个为圆弧面，另一个竖直面，由此，该锅体的形状可为长方形、类椭圆形、条形等形状。
优选的，第二侧壁12和/或第四侧壁14上至少部分为竖直面。经验可知，同样容量的锅体侧壁为竖直面比侧壁为圆弧面等节省空间，或者说侧壁为竖直面更能充分利用空间，避免不必要的浪费可用空间，因此，本实施例中的第二侧壁12和第四侧壁14中至少有一个包含竖直面。更优选的，第二侧壁12和第四侧壁14均为竖直面。
具体的，第二侧壁12的外侧面固定有把手15，通过把手15将锅体1抽出或推进空气炸锅整机内。
如图5-14所示，本发明还提供一种空气炸锅，包括机体2以及设置于机体内的上述锅体1，机体2内设有导流隔罩3，锅体1放入机体2后，导流隔罩3封闭锅体1的上端开口形成加热腔4；导流隔罩3和锅体1均呈长方形结构，导流隔罩3将锅体1封闭后形成的加热腔4也为类似长方形结构，本发明中所指的长方形结构为具有长度和宽度的任何规则的形状(如长方圆形、椭圆形、条形等)，将锅体设计成长方形结构，使之可以盛放具有一定长度的食物，比如一整条鱼、具有一定长度的烤肉串、长条形的面包等，保证食物的完整性，且空气炸锅的整体尺寸更适配厨房的环境。
如图6、图11、图12所示，导流隔罩3的中间位置设有进风口31，进风口31的下方设有下扇叶5，导流隔罩3的内侧面上围绕进风口31形成导流曲面33，导流曲面33用于将下扇叶5工作产生的热风导向加热腔4的四周，实现热的均 匀循环；本发明中定义下扇叶5的最低点所在的平面和最高点所在的平面与导流隔罩3围成的区域为导流切入区域34(即图8中的A’O’B’围成的区域)，此区域主要是空气在下扇叶5的离心力作用下被甩出后第一次接触导流隔罩3的区域，导流切入区域34对空气的减速阻力相对其他区域较大，导流切入区域34的大小直接影响加热腔4内空气循环的效果。为了减小加热腔4内空气流通的阻力，本发明中定义下扇叶5的旋转轴与导流隔罩3顶面的交点为B，取导流隔罩3内侧面下边缘上的任意一点为A，线段AB为导流隔罩3内侧面上的线段，定义A点在线段AB上的切线方向与水平面夹角为导出角α，导出角的取值范围为45°≤α≤90°时对空气流通的阻力较小，且导出角越接近90°，锅体2内空气的循环效果越好。
具体的，定义经过A点的水平面与下扇叶5的旋转轴的交点为O，以经过AOB三点的平面为截面剖切导流隔罩3得到如图8所示的简化面AOBC，其中C点为经过A点和B点的垂直交点，直线BO为下扇叶5的旋转轴，ABO三点围成的区域为导流区域，导流区域包括上述所说的导流切入区域A’O’B’。
可选的，导流隔罩3内侧面上的线段AB为曲线或多段线，如图9所示，线段AB由多段线组成。如图8和图10所示，线段AB由曲线组成。通过计算验证，线段AB越接近平滑的曲线，加热腔4内的空气循环越好。
优选的，在截面AOBC、风扇尺寸等相同的情况下，导流切入区域A’O’B’的面积越小，空气循环的效果越佳。
更优选的，如图10所示，在锅体尺寸、风扇尺寸、风扇转速一定的情况下，选取线段AB为曲线，且使导出角α为90°，导流切入区域A’O’B’的面积和导流区域AOB的面积达到最小时，此时AB线段为最佳曲线，且曲线AB较为接近以AO和BO为半轴的椭圆，最优的情况下，导流区域AOB占截面AOBC的面积为70％-90％；当导流区域AOB占截面AOBC的面积为78％-80％时，空气循环效果最好，煮食效果最佳。
优选的，如图7所示，保持下扇叶5的型号及大小固定不变，则下扇叶5的最高点所在的平面与导流隔罩3的内侧面顶部的距离为h，h增大时，导流切入区域34也随之增大，对空气的减速也增大,h越大越不利于热空气的循环，h的取值范围为0＜h＜30时空气循环的效果较佳。优选的，经过加热效果的验证， h的取值范围为0＜h＜10，h在该取值范围内时，加热腔4内空气的热循环效果最好。
本发明通过设置导出角α的取值范围为：45°≤α≤90°，h的取值范围为0＜h＜30，限制了导流隔罩的形状，并限定了下扇叶在导流隔罩内的位置，上述限定有利于降低空气的循环阻力，使加热腔内的热空气循环更均匀，取得较佳的煮食效果。
具体的，如图11所示，导流隔罩为一体成型的一个部件，且导流隔罩3呈倒碗状结构，导流隔罩3的内侧面包括位于中间的水平面区域36和位于水平面区域36外围的导流曲面33，导流曲面33由内到外逐渐向下倾斜，进而将热风逐渐导向加热腔4长度方向的两头，进风口31位于水平面区域36内，下扇叶5的转动区域与水平面区域36相适应，可以理解为水平面区域36为圆形区域，圆形区域的面积与下扇叶5转动区域的面积相同。同时，导流隔罩3上还设有出风口32，出风口32与机体2的外部连通，出风口32用于将锅体2内的食物水分排出。
优选的，当下扇叶5的型号及大小固定时，下扇叶5的最高点所在的平面与水平面区域36的垂直距离为h，h越大越不利于热空气的循环，优选的，h的取值范围为0＜h＜10，h在该取值范围内时，加热腔4内空气的热循环效果较好。
需要说明的是，本发明中的导流隔罩3有两方面的作用，一为隔罩作用，二为导流作用，基于上述两方面的作用，导流隔罩3也可以设计成拆分的结构，如图14所示，导流隔罩3可拆分为隔罩37和导流板38两部分，隔罩37盖合在锅体2的上端开口形成封闭的加热腔4，导流板38设置在隔罩37的下方，下扇叶5设置在导流板38的下方，导流板38起导流作用，导流板38内侧面面形成导流曲面33，下扇叶5的最低点和最高点与导流板38之间围成导流切入区域34，导流切入区域的结构可参考一体式导流隔罩，不再赘述。
具体的，如图6所示，本发明空气炸锅的机体2内设有相互连通的第一散热腔6和第二散热腔7，第一散热腔6位于加热腔4的上方，第二散热腔7位于加热腔4的下方，加热腔4内设有发热管21，加热腔4通过进风口31与第一散热腔6连通，第二散热腔7的底部设有散热孔。第一散热腔6的腔的上方设有 冷风进口，第一散热腔6和第二散热腔7连通形成冷空气循环腔，加热腔4内设置发热管21形成热空气循环腔，冷空气循环腔包裹热空气循环腔，起到散热作用的同时极大的降低了空气炸锅内部各元器件和机器表面的温升。
具体的，如图7所示，第一散热腔6的上方设有电机8，电机8的转轴9贯穿第一散热腔6，并经进风口31穿过导流隔罩3，转轴9上共轴安装有上扇叶10和下扇叶5，上扇叶10位于第一散热腔6内，下扇叶5位于加热腔4内，上扇叶10用于使冷空气循环腔内的空气循环，下扇叶5用于使热空气循环腔内空气循环。
如图12、图13所示，本发明还提供一种空气循环系统，包括热空气循环和冷空气循环，下扇叶5产生的热风经导流切入区域34流向热空气循环腔的四周，下扇叶5的正下方形成低压区域，散开到热空气循环腔四周的空气从底部向中间收拢，空气在中间的低压区域螺旋上升，上升至下扇叶5后被甩向四周，形成热空气的高速循环；上扇叶10旋转将进入第一散热腔6内部的冷空气向四周吹散，并流向第二散热腔7，形成包裹加热腔的冷空气的高速循环。经过上述空气循环系统实现了长方形结构锅体内食物的煮食均匀、外焦里嫩、酥脆的煮食效果。
本发明的空气循环系统的工作原理为：冷空气循环主要在第一散热腔6和第二散热腔7内，上扇叶10在第一散热腔6内控制第一散热腔6内的气流循环，冷空气从机体2上壳顶部的冷风进口进入第一散热腔6，在上扇叶10的作用下向四周散开并流向第二散热腔7，最终冷空气由第二散热腔7底部的散热孔排出，冷空气在第一散热腔6和第二散热腔7内形成一股包裹着加热腔的冷空气循环，起散热作用，极大的降低了空气炸锅内部各元器件和表面的温度；
热空气循环在加热腔4内，起煮食作用，煮食时，下扇叶5旋转利用离心力将由进风口31进入的空气向四周散开，在导流曲面33的作用下热风被导向四周和加热腔4长度方向的两头，而此时由于空气被甩开，在下扇叶5正下方会形成低压区域，散开到四周及加热腔长度方向的两头的空气又从底部向中间收拢，从而在加热腔内部形成如图6、图12和图13所示的空气循环，在空气循环的作用下将热量均匀的散开到整个锅体，同时还将食物中的水分从出风口排出，最终实现空气炸锅内空气的高速循环，达到煮食均匀、外焦里嫩、酥脆的 煮食效果。
以上借助具体实施例对本发明做了进一步描述，但是应该理解的是，这里具体的描述，不应理解为对本发明的实质和范围的限定，本领域内的普通技术人员在阅读本说明书后对上述实施例做出的各种修改，都属于本发明所保护的范围。

Claims (15)

  1. 一种锅体，其特征在于，包括锅底以及环绕所述锅底的侧壁，所述锅底与所述侧壁形成容纳腔，所述容纳腔呈长方形结构，所述容纳腔的长度为a，a≤80cm,宽度为b,b≥10cm,所述容纳腔的长度a与宽度b的比值为k,k＝1.5～5。
  2. 根据权利要求1所述的锅体，其特征在于，k＝2～2.5。
  3. 根据权利要求1所述的锅体，其特征在于，所述容纳腔的宽度b＝10～50cm。
  4. 一种空气炸锅，包括权利要求1-3中任意一项所述的锅体，其特征在于，还包括机体和设置在所述机体内的导流隔罩，所述锅体放入所述机体后，所述导流隔罩封闭所述锅体的上端开口形成加热腔；
    所述导流隔罩的中间位置设有进风口，所述进风口的下方设置有下扇叶，所述导流隔罩的内侧面上围绕所述进风口形成导流曲面，所述导流曲面将所述加热腔内的热风由所述进风口位置导向所述加热腔的四周。
  5. 根据权利要求4所述的空气炸锅，其特征在于，所述下扇叶的旋转轴与所述导流隔罩顶面的交点为B，取所述导流隔罩内侧面边缘上的任意一点为A，线段AB为所述导流曲面上的线段，定义A点在线段AB上的切线方向与水平面夹角为导出角α，所述导出角α的取值范围为45°≤α≤90°。
  6. 根据权利要求5所述的空气炸锅，其特征在于，所述导流曲面上的线段AB为曲线或多段线。
  7. 根据权利要求4所述的空气炸锅，其特征在于，所述下扇叶的型号及大小固定时，所述下扇叶的最高点所在的平面与所述导流隔罩的内侧面顶部的距离为h，h的取值范围为0＜h＜30。
  8. 根据权利要求7所述的空气炸锅，其特征在于，所述h的取值范围为0＜h＜10。
  9. 根据权利要求4所述的空气炸锅，其特征在于，所述导流隔罩的内侧面包括位于中间的水平面区域和位于所述水平面区域外围的所述导流曲面，所述导流曲面由内到外逐渐向下倾斜，所述进风口位于所述水平面区域内，所述下扇叶的转动区域与所述水平面区域相适应。
  10. 根据权利要求4所述的空气炸锅，其特征在于，所述导流隔罩为一体式结构，所述导流隔罩呈倒碗状结构，所述导流曲面位于所述导流隔罩的内侧面 上，所述导流曲面由内到外逐渐向下倾斜。
  11. 根据权利要求4所述的空气炸锅，其特征在于，所述导流隔罩为分体式结构，包括封闭所述锅体上端开口的隔离罩和位于所述隔离罩下方的导向板，所述导向板呈倒碗状结构，所述下扇叶位于所述导向板的下方，所述导流曲面位于所述导向板的内侧面上，所述导流曲面由内到外逐渐向下倾斜。
  12. 根据权利要求4所述的空气炸锅，其特征在于，还包括设置在所述机体内且相互连通的第一散热腔和第二散热腔，所述第一散热腔位于所述加热腔的上方，所述第二散热腔位于所述加热腔的下方，所述加热腔内设有发热管，所述加热腔通过所述进风口与所述第一散热腔连通，所述第二散热腔的底部设有散热孔。
  13. 根据权利要求12所述的空气炸锅，其特征在于，所述第一散热腔的上方设有电机，所述电机的转轴贯穿所述第一散热腔，并经所述进风口穿过所述导流隔罩，所述转轴上共轴安装有上扇叶和所述下扇叶，所述上扇叶位于所述第一散热腔内，所述下扇叶位于所述加热腔内。
  14. 根据权利要求13所述的空气炸锅，其特征在于，所述第一散热腔的上方设有冷风进口，所述第一散热腔和第二散热腔连通形成冷空气循环腔，所述加热腔形成热空气循环腔，所述冷空气循环腔包裹所述热空气循环腔。
  15. 一种基于权利要求12-14中任意一项所述的空气炸锅的空气循环系统，其特征在于，包括热空气循环和冷空气循环；
    所述下扇叶产生的热风经所述导流曲面流向所述加热腔的四周，同时在所述下扇叶的正下方形成低压区域，散开到所述加热腔四周的空气从底部向中间收拢，空气在中间的所述低压区域螺旋上升，上升至下扇叶后被甩向四周，形成所述热空气循环；
    所述上扇叶旋转将进入所述第一散热腔内部的冷空气向四周吹散，并流向第二散热腔，形成包裹所述加热腔的所述冷空气循环。
PCT/CN2022/116021 2022-08-05 2022-08-31 一种锅体、空气炸锅及空气循环系统 WO2024026959A1 (zh)

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