CN219331429U - Cooking utensil - Google Patents

Abstract

The present utility model provides a cooking appliance, comprising: the pot body is provided with a cavity; the first stirring blade is rotatably arranged in the cavity and comprises a lower return hook part, and the end part of the lower return hook part extends towards the inside of the cavity; and the second stirring blade is rotatably arranged in the cavity, the end part of the second stirring blade extends towards the outside of the cavity, and the ratio of the distance between the end part of the second stirring blade and the longitudinal center line of the cavity to the radius of the opening part of the pot body is between 0.4 and 0.7. According to the technical scheme, the problem that in the related art, food attached to the side wall of the cooking cavity is difficult to stir so that the cooking effect is poor can be effectively solved.

Description

Cooking utensil

Technical Field

The utility model relates to the technical field of small household appliances, in particular to a cooking utensil.

Background

In the related art, a multifunctional cooking appliance is provided, wherein a stirring blade is arranged in a cooking cavity so as to stir food in the cooking cavity and further realize a stir-frying function, so that the multifunctional cooking appliance is greatly convenient for a user to use.

However, the above arrangement can only stir the food at the bottom of the cooking cavity, and the stirring effect is poor or not enough for the food attached to the side wall of the cooking cavity, so that the cooking effect is poor.

Disclosure of Invention

The main object of the present utility model is to provide a cooking appliance to solve the problem of the related art that it is difficult to stir food attached to the side wall of the cooking cavity so that the cooking effect is poor.

In order to achieve the above object, the present utility model provides a cooking appliance comprising: the pot body is provided with a cavity; the first stirring blade is rotatably arranged in the cavity and comprises a lower return hook part, and the end part of the lower return hook part extends towards the inside of the cavity; and the second stirring blade is rotatably arranged in the cavity, the end part of the second stirring blade extends towards the outside of the cavity, and the ratio of the distance between the end part of the second stirring blade and the longitudinal center line of the cavity to the radius of the opening part of the pot body is between 0.4 and 0.7.

By applying the technical scheme, two stirring blades are arranged in the cavity, wherein the first stirring blade comprises the lower return hook part, the lower return hook part can stir food attached to the side wall of the cavity and food positioned outside the cavity, and the second stirring blade can stir food positioned inside the cavity, so that the food in the cavity can be stirred, and further the stirring effect is ensured. Specifically, the ratio between the distance between the end of the second stirring vane and the longitudinal center line of the cavity and the radius of the mouth of the pan body is between 0.4 and 0.7, so that the two stirring vanes can play a role in stirring food no matter how much food is in the cavity. Therefore, the technical scheme of the application can effectively solve the problem that the food attached to the side wall of the cooking cavity is difficult to stir so that the cooking effect is poor in the related art.

Further, the ratio between the distance between the end of the second stirring vane and the longitudinal centre line of the cavity and the radius of the mouth of the pan body is between 0.5 and 0.6. The ratio is within the above range, and a good stir-frying effect can be achieved even for a scene with less food. Meanwhile, the lower extension hook part is ensured to have enough stirring length, and corresponding stirring function can be realized.

Further, a ratio between a distance between an end of the second stirring vane and a longitudinal center line of the cavity and a dimension of the lower return hook portion in a radial direction of the pan body is between 2/3 and 7/3. The ratio is in the range, so that the second stirring blade and the lower return hook part have enough stirring length, and the respective stirring functions are realized. The stir-frying effect can be better for scenes with fewer foods.

Further, a ratio between a distance between an end of the second stirring vane and a longitudinal center line of the cavity and a dimension of the lower return hook portion in a radial direction of the pan body is between 1 and 1.25. The ratio is in the range, so that the second stirring blade and the lower return hook part have enough stirring length, and the respective stirring functions are realized. The stir-frying effect can be better for scenes with fewer foods.

Further, the rotation axis of the second stirring blade is parallel to or coincides with the rotation axis of the first stirring blade, wherein the rotation direction of the first stirring blade is opposite to the rotation direction of the second stirring blade, or the rotation direction of the first stirring blade is the same as the rotation direction of the second stirring blade, and the rotation speed of the first stirring blade is different from the rotation speed of the second stirring blade. In the cooking process, can meet or stagger between first stirring vane and the second stirring vane, first stirring vane or second stirring vane can change the state of food when meeting between first stirring vane and the second stirring vane for food is holding the intracavity and is overturned, and then can evenly stir food.

Further, a distance between the end of the first stirring blade and the end of the second stirring blade is between 0 and 10 mm. The distance can effectively scatter food in the range, so that the food can be ensured to have better cooking effect. In addition, first stirring vane and second stirring vane have covered almost all areas of cavity diapire, guarantee that food in the cavity can all be stirred, and then guarantee the culinary art effect.

Further, a distance between the end of the first stirring blade and the end of the second stirring blade is between 4mm and 6mm. The distance can effectively scatter food in the range, so that the food can be ensured to have better cooking effect.

Further, the cooking appliance further comprises a rotating shaft part rotatably arranged in the cavity, and the first stirring blade further comprises a connecting arm connected between the rotating shaft part and the lower return hook part. The connecting arm is connected between the lower extension hook part and the rotating shaft part and can transmit power, so that the lower extension hook part can rotate under the driving of the rotating shaft part, and the stirring function is further realized.

Further, the lower extension hook part comprises a turning section and a stirring section, the turning section is positioned between the connecting arm and the stirring section, and the stirring section comprises a bottom surface, a first food material contact surface and a second food material contact surface, wherein the first food material contact surface and the second food material contact surface are arranged on two sides of the bottom surface. The both sides of bottom surface set up first food material contact surface and second food material contact surface respectively for first stirring vane can just can the reversal again, and the culinary art is selected more various.

Further, the first food material contact surface and the bottom surface are arranged at an acute angle, and an included angle between the second food material contact surface and the bottom surface is larger than an included angle between the first food material contact surface and the bottom surface, or the first food material contact surface and the second food material contact surface are symmetrically arranged. The first food material contact surface and the bottom surface are arranged at an acute angle, so that food can fall down after moving upwards for a certain distance along the first food material contact surface, and the food can be overturned. When the included angle between the second food material contact surface and the bottom surface is larger, the food can be pushed to move forward. When the second food material contact surface and the first food material contact surface are symmetrically arranged, the effect of stirring food can be achieved.

Further, the pan body comprises a side wall and a bottom wall, the side wall extends along the vertical direction, the bottom wall comprises an arc-shaped section, and the ratio between the size of the arc-shaped section along the radial direction of the pan body and the radius of the side wall is between 0.55 and 0.7. In the cooking process, the food positioned on the arc-shaped section is easy to roll to the middle position of the container along the arc-shaped section, namely, the food is gathered.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a cooking appliance according to the present utility model;

fig. 2 shows a side sectional view of the cooking appliance of fig. 1;

fig. 3 shows an enlarged view at a of the cooking appliance of fig. 2;

fig. 4 shows a lateral cross-sectional view of the cooking appliance of fig. 1;

fig. 5 shows an enlarged view at B of the cooking appliance of fig. 4; and

fig. 6 shows a schematic perspective view of a first stirring vane of the cooking appliance of fig. 1.

Wherein the above figures include the following reference numerals:

10. a pot body; 11. a cavity; 12. a sidewall; 13. a bottom wall; 131. an arc section; 20. a first stirring blade; 21. a lower extension hook part; 211. a turning section; 212. a stirring section; 2121. a bottom surface; 2122. a first food material contact surface; 2123. a second food material contact surface; 22. a connecting arm; 30. a second stirring blade; 40. a rotating shaft portion;

l1, the distance between the end of the second stirring vane and the longitudinal centre line of the cavity;

l2, the dimension of the lower extension hook part along the radial direction of the pot body;

l3, the distance between the end of the first stirring blade and the end of the second stirring blade;

l4, the dimension of the arc section along the radial direction of the pot body;

r1, radius of the opening of the pot body;

r2, radius of the sidewall;

a1, forming an included angle between the contact surface and the bottom surface of the second food material;

a2, forming an included angle between the first food material contact surface and the bottom surface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1 to 6, the cooking appliance of the present embodiment includes: the pan body 10, the first stirring vane 20 and the second stirring vane 30. Wherein, the pan body 10 is provided with a cavity 11; the first stirring blade 20 is rotatably provided in the cavity 11, the first stirring blade 20 includes a lower return hook portion 21, and an end portion of the lower return hook portion 21 extends toward the inside of the cavity 11; the second stirring vane 30 is rotatably provided in the cavity 11, and an end of the second stirring vane 30 extends toward the outside of the cavity 11, and a ratio between a distance L1 between the end of the second stirring vane 30 and a longitudinal center line of the cavity 11 and a radius R1 of the mouth of the pan body 10 is between 0.4 and 0.7.

By applying the technical scheme of the embodiment, two stirring blades (the first stirring blade 20 and the second stirring blade 30) are arranged in the cavity 11, wherein the first stirring blade 20 comprises a lower return hook portion 21, the lower return hook portion 21 can stir food attached to the side wall of the cavity 11 and food located outside the cavity 11, and the second stirring blade 30 can stir food located inside the cavity 11, so that the food in the cavity 11 can be stirred, and the stirring effect is guaranteed. Specifically, the ratio between the distance L1 between the end of the second stirring vane 30 and the longitudinal center line of the cavity 11 and the radius R1 of the mouth of the pot 10 is between 0.4 and 0.7, so that both stirring vanes can play a role in stirring food regardless of the amount of food in the cavity 11. Therefore, the technical solution of the present embodiment can effectively solve the problem that the food attached to the side wall of the cooking cavity is difficult to stir so that the cooking effect is poor in the related art.

Specifically, when cooking is performed, the first and second stirring vanes 20 and 30 may push food to move along the circumferential direction of the cavity 11, wherein the food material located in the middle of the cavity 11 may be thrown out along the second stirring vane 30 by centrifugal force, so that the food material may move to the junction of the first and second stirring vanes 20 and 30.

It should be noted that, the "inside and outside of the cavity 11" are both located in the space formed by the cavity walls of the cavity 11, where "inside" refers to a position close to the center of the cavity 11, and "outside" refers to a position away from the center of the cavity 11.

As shown in fig. 2, in the present embodiment, the pan body 10 includes a side wall 12 and a bottom wall 13, the side wall 12 extends in the vertical direction, the bottom wall 13 includes an arc-shaped section 131, and the ratio between the dimension L4 of the arc-shaped section 131 in the radial direction of the pan body 10 and the radius R2 of the side wall 12 is between 0.55 and 0.7. I.e., the radial dimension of the arc-shaped segment 131 is larger, when the amount of food is small, the food in the arc-shaped segment 131 easily rolls to the middle position of the pot body 10 along the arc-shaped segment 131, i.e., the food is gathered. Preferably, the above ratio may be 0.55, 0.6, 0.65 or 0.7.

Wherein the ratio between the distance L1 between the end of the second stirring vane 30 and the longitudinal center line of the cavity 11 and the radius R1 of the mouth of the pan body 10 is between 0.4 and 0.7, i.e. the radial dimension of the second stirring vane 30 is large. Through the cooperation between second stirring vane 30 and the arc section 131 for food has to gather together to the middle part of pot body 10, can remove to the intersection of first stirring vane 20 and second stirring vane 30 again simultaneously under the guiding action of second stirring vane 30, makes two stirring vanes homoenergetic play the effect of stirring food.

Specifically, the inventors conducted a cooking experiment with respect to the value of the ratio between the distance L1 between the end of the second stirring vane 30 and the longitudinal center line of the cavity 11 and the radius R1 of the mouth of the pan body 10, the experiment being recorded as follows:

specifically, the above-mentioned "disturbance action" refers to pushing the food forward by the second stirring blade 30, and the above-mentioned "break-up" refers to breaking up and dispersing the block structure formed by the small-particle food materials into a plurality of small-particle food materials or breaking up the food materials which can be solidified after heating the eggs and the like to a liquid state at normal temperature into a plurality of small-particle solid state structures.

From the above experimental record, it is found that L1/R1 can exert a good stir-frying effect even in a scene with less food (for example, shredded meat or one egg within 100 g). While ensuring that the lower return hook 21 has a sufficient stirring length, and a corresponding stirring function can be achieved.

Preferably, in the present embodiment, the ratio between the distance L1 between the end of the second stirring vane 30 and the longitudinal center line of the cavity 11 and the radius R1 of the mouth of the pan body 10 is between 0.5 and 0.6. Specifically, L1/R1 may be 0.5, 0.55, or 0.6.

In the present embodiment, the ratio between the distance L1 between the end of the second stirring vane 30 and the longitudinal center line of the cavity 11 and the dimension L2 of the lower return hook 21 in the radial direction of the pan body 10 is between 2/3 and 7/3. The ratio of L1 to L2 is in the above range, ensuring that both the second stirring blade 30 and the lower return hook 21 have sufficient stirring lengths to achieve respective stirring functions. The stir-frying device can also play a good role in stir-frying for the scene with less food (such as shredded pork or an egg within 100 g).

Preferably, in the present embodiment, the ratio between the distance L1 between the end of the second stirring vane 30 and the longitudinal center line of the cavity 11 and the dimension L2 of the lower return hook 21 in the radial direction of the pan body 10 is between 1 and 1.25. Specifically, L1/L2 may be 1, 1.1, 1.2 or 1.25.

As shown in fig. 1 to 5, the rotation axis of the second stirring blade 30 is parallel to or coincides with the rotation axis of the first stirring blade 20, wherein the rotation direction of the first stirring blade 20 is opposite to the rotation direction of the second stirring blade 30. In the cooking process, when the end part of the first stirring blade 20 and the end part of the second stirring blade 30 meet, the end part and the end part respectively apply acting forces in opposite directions to food, so that the food can be overturned in the cavity 11, and further, the food can be uniformly stirred, and the cooking effect is ensured.

Of course, in other possible embodiments, the rotation direction of the first stirring blade may be the same as the rotation direction of the second stirring blade, and the rotation speed of the first stirring blade may be different from the rotation speed of the second stirring blade. Thus, the speed difference is formed between the first stirring blade and the second stirring blade, and food can be effectively overturned when the first stirring blade and the second stirring blade meet.

Specifically, in order to realize the reverse rotation of the first stirring blade and the second stirring blade or the same-direction differential rotation of the first stirring blade and the second stirring blade, two motors can be provided to drive the first stirring blade and the second stirring blade respectively, and the first stirring blade and the second stirring blade can be driven simultaneously by one motor and the gear set through the cooperation of one motor and the gear set.

As shown in fig. 2 and 3, a distance L3 between the end of the first stirring vane 20 and the end of the second stirring vane 30 is between 0 and 10mm (here, the distance refers to a distance in the radial direction of the pot 10 when the two meet). The end of the first stirring vane 20 and the end of the second stirring vane 30 have a small gap therebetween, and the end of the first stirring vane 20 and the end of the second stirring vane 30 can squeeze food, especially for small-granularity food such as shredded meat, minced meat, etc., and can effectively break up food. At the same time, the occurrence of a jam between the ends of the first stirring vane 20 and the second stirring vane 30 when they meet can be avoided. When the first stirring vane 20 and the second stirring vane 30 are both made of rubber, the distance L3 may be set to 0, and at this time, the end portions of the first stirring vane 20 and the second stirring vane 30 meet to be in transition fit.

Specifically, the inventors conducted a cooking experiment with respect to the value of the distance L3 between the end of the first stirring blade 20 and the end of the second stirring blade 30, the experiment being recorded as follows:

from the experimental record, the distance L3 can effectively scatter food in the range of 0 to 10mm, so that the food can be well cooked. In addition, the first stirring vane 20 and the second stirring vane 30 cover almost all areas of the bottom wall of the cavity 11, ensuring that food in the cavity 11 can be stirred, thereby ensuring a cooking effect.

Preferably, in the present embodiment, the distance L3 between the end of the first stirring blade 20 and the end of the second stirring blade 30 is between 4mm and 6mm. Specifically, the distance L3 may be 4mm, 5mm or 6mm.

As shown in fig. 1 to 6, the cooking appliance further includes a rotation shaft portion 40, the rotation shaft portion 40 being rotatably disposed in the cavity 11, and the first stirring vane 20 further includes a connection arm 22, the connection arm 22 being connected between the rotation shaft portion 40 and the lower return hook portion 21. The connection arm 22 is connected between the lower return hook portion 21 and the rotating shaft portion 40 to enable power transmission, so that the lower return hook portion 21 can rotate under the drive of the rotating shaft portion 40, thereby realizing a stirring function.

As shown in fig. 4 to 6, the lower return hook 21 includes a turning section 211 and a stirring section 212, the turning section 211 is located between the connecting arm 22 and the stirring section 212, and the stirring section 212 includes a bottom surface 2121, and a first food material contact surface 2122 and a second food material contact surface 2123 provided on both sides of the bottom surface 2121. The first food material contact surface 2122 and the second food material contact surface 2123 are respectively provided on both sides of the bottom surface 2121, so that the first stirring vane 20 can be rotated forward and backward, and cooking options are more various.

Specifically, as shown in fig. 4 to 6, the first food material contact surface 2122 is disposed at an acute angle to the bottom surface 2121, and an angle A1 between the second food material contact surface 2123 and the bottom surface 2121 is larger than an angle A2 between the first food material contact surface 2122 and the bottom surface 2121. The first food material contact surface 2122 and the bottom surface 2121 are disposed at an acute angle, so that the food can move up a distance along the first food material contact surface 2122 and then fall down (specifically, the food falls down to the rear of the stirring section 212 beyond the upper end of the stirring section 212, and of course, some food may fall down to the front of the stirring section 212), so as to realize the overturning of the food. The second food material contact surface 2123 has a larger included angle with the bottom surface 2121, so that the food can be pushed to move forward.

Of course, in other possible embodiments, the first food material contact surface and the second food material contact surface may be symmetrically disposed, that is, the first food material contact surface and the second food material contact surface may both have the effect of stirring food.

In this embodiment, the cooking appliance is a multifunctional cooking appliance with a stir-frying function. Of course, in the embodiment not shown in the drawings, the cooking appliance may also be a product such as an electric cooker, a pressure cooker, a low-pressure rice cooker, a soymilk machine, a cooking machine, a dish frying machine, an electric stewpot, a multifunctional pot, etc.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (11)

1. A cooking appliance, comprising:

a pan body (10) provided with a cavity (11);

a first stirring blade (20) rotatably disposed within the cavity (11), the first stirring blade (20) including a lower return hook (21), an end of the lower return hook (21) extending toward an interior of the cavity (11);

the second stirring blade (30) is rotatably arranged in the cavity (11), the end part of the second stirring blade (30) extends towards the outside of the cavity (11), and the ratio of the distance (L1) between the end part of the second stirring blade (30) and the longitudinal center line of the cavity (11) to the radius (R1) of the opening part of the pot body (10) is between 0.4 and 0.7.

2. Cooking appliance according to claim 1, characterized in that the ratio between the distance (L1) between the end of the second stirring blade (30) and the longitudinal centre line of the cavity (11) and the radius (R1) of the mouth of the pan (10) is between 0.5 and 0.6.

3. Cooking appliance according to claim 1, characterized in that the ratio between the distance (L1) between the end of the second stirring blade (30) and the longitudinal centre line of the cavity (11) and the dimension (L2) of the lower return hook (21) in the radial direction of the pan (10) is between 2/3 and 7/3.

4. A cooking appliance according to claim 3, wherein the ratio between the distance (L1) between the end of the second stirring blade (30) and the longitudinal centre line of the cavity (11) and the dimension (L2) of the lower return hook (21) in the radial direction of the pan (10) is between 1 and 1.25.

5. Cooking appliance according to claim 2, characterized in that the axis of rotation of the second stirring blade (30) is parallel or coincides with the axis of rotation of the first stirring blade (20), wherein the direction of rotation of the first stirring blade (20) is opposite to the direction of rotation of the second stirring blade (30), or the direction of rotation of the first stirring blade (20) is the same as the direction of rotation of the second stirring blade (30), the rotational speed of the first stirring blade (20) being different from the rotational speed of the second stirring blade (30).

6. Cooking appliance according to any one of claims 1 to 5, characterized in that the distance (L3) between the end of the first stirring blade (20) and the end of the second stirring blade (30) is between 0 and 10 mm.

7. Cooking appliance according to claim 6, characterized in that the distance (L3) between the end of the first stirring blade (20) and the end of the second stirring blade (30) is between 4mm and 6mm.

8. The cooking appliance according to any one of claims 1 to 5, further comprising a rotating shaft portion (40), the rotating shaft portion (40) being rotatably arranged within the cavity (11), the first stirring blade (20) further comprising a connecting arm (22), the connecting arm (22) being connected between the rotating shaft portion (40) and the lower return hook portion (21).

9. The cooking appliance according to claim 8, wherein the lower return hook (21) comprises a turning section (211) and a stirring section (212), the turning section (211) being located between the connecting arm (22) and the stirring section (212), the stirring section (212) comprising a bottom surface (2121) and a first food contact surface (2122) and a second food contact surface (2123) arranged on both sides of the bottom surface (2121).

10. The cooking appliance according to claim 9, wherein the first food material contact surface (2122) is disposed at an acute angle to the bottom surface (2121), and the angle (A1) between the second food material contact surface (2123) and the bottom surface (2121) is larger than the angle (A2) between the first food material contact surface (2122) and the bottom surface (2121), or the first food material contact surface (2122) and the second food material contact surface (2123) are symmetrically disposed.

11. Cooking appliance according to any one of claims 1 to 5, wherein the pan body (10) comprises a side wall (12) and a bottom wall (13), the side wall (12) extending in a vertical direction, the bottom wall (13) comprising an arc-shaped section (131), the ratio between the dimension (L4) of the arc-shaped section (131) in the radial direction of the pan body (10) and the radius (R2) of the side wall (12) being between 0.55 and 0.7.

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