Electric frying pan uniform in heat conduction

Abstract

The utility model discloses an electric frying pan capable of conducting heat uniformly. The electric frying pan comprises a heating base with a heating disc and a pan body capable of being placed on the heating base. The pot body comprises a pot bottom, a pot body part and a transition part which is in transition connection between the pot bottom and the pot body part, and the transition part is a spherical surface with the central axis of the pot body part as the axis; the heating disc comprises a heat gathering part corresponding to the bottom of the pot and a heat transfer part corresponding to the transition part; the heat transfer part is a spherical surface which can be attached to the transition part; the diameter r1 of the pot bottom is larger than the diameter r2 of the heat collecting part, so that a reserved gap with the maximum axial height S is formed between the pot bottom and the heat collecting part when the pot body is placed on the heating base. Reliable thermal contact can be kept between the pot body and the heating disc, heat conduction is uniform, and the pot has good cooking and frying performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of household appliances, especially to a uniform heat conduction electric frying pan. BACKGROUND

[0002] The electric frying pan is a kind of pan that meets the needs of small frying cooking, which comprises a heating seat with a heating disc and a pan body that can be placed on the heating seat, and the pan body is characterized by a large opening at the top and a round bottom structure, usually designed with a handle to facilitate the throwing and frying.

[0003] The electric frying pan is prone to thermal deformation during long-term use, resulting in poor contact between the pan body and the heating disc, which is not conducive to the rapid conduction of heat from the heating disc to the pan body. Therefore, the prior art usually adopts the following means for optimization design: one is to thicken the size of the bottom, which increases the strength of the bottom to reduce the size of thermal deformation of the pan body after heating, but it not only increases the cost of the pan body, but also makes the pan body significantly heavier, which increases the difficulty of use for the user and is not conducive to the user's use; the second is to pre-deform the bottom into a concave shape, which causes the cooking oil in the pan body to flow from the center to the periphery during small frying, making it difficult for the cooking oil in the center to stay and prone to overheating, and thus prone to the phenomenon of bottom burning or sticking. SUMMARY

[0004] The utility model provides a kind of electric frying pan of uniform heat conduction, to solve the technical problems that pan body is prone to thermal deformation in prior art and causes poor contact with heating seat.

[0005] The utility model provides a kind of electric frying pan of uniform heat conduction, comprising a heating seat 1 with a heating disc 2 and a pan body 3 that can be placed on the heating seat 1;The pan body 3 includes a bottom part 31, a body part 33 and a transition part 32 connected between the bottom part 31 and the body part 33, and the transition part 32 is a spherical surface with the center axis of the body part 33 as the axis;The heating disc 2 includes a heat collecting part 21 corresponding to the bottom part 31 and a heat transfer part 22 corresponding to the transition part 32;The heat transfer part 22 is a spherical surface that can be attached to the transition part 32;The diameter r1 of the bottom part 31 is greater than the diameter r2 of the heat collecting part 21, so that there is a reserved gap 4 with the maximum axial height S between the bottom part 31 and the heat collecting part 21 when the pan body 3 is placed on the heating seat 1.

[0006] In some preferred embodiments, 0.5mm≤S≤2.5mm.

[0007] In some preferred embodiments, the caliber R of the body part 33 and the diameter r1 of the bottom part 31 satisfy the proportional relationship: 0.1≤r1 / R≤0.5.

[0008] In some preferred embodiments, the spherical radius SR of the transition part 32 is 200mm≤SR≤500mm.

[0009] In some preferred embodiments, the bottom part 31 of the pot is spherical, the height difference C between the highest point of the bottom part 31 and the lowest point of the bottom part 31 is 0.5 mm≤C≤1.0 mm.

[0010] In some preferred embodiments, the angle α between the line connecting the highest point and the lowest point of the transition part 32 and the plane where the lowest point of the bottom part 31 is located is α≥10°.

[0011] In some preferred embodiments, the straight-line distance between the highest point and the lowest point of the transition part 32 is L1, and the straight-line distance between the highest point and the lowest point of the heat transfer part 22 is L2, L1≥L2.

[0012] In some preferred embodiments, 15 mm≤L1≤25 mm.

[0013] In some preferred embodiments, the highest point of the transition part 32 extends outward by a length s1 of the highest point of the heat transfer part 22, s1≥0.2 mm.

[0014] In some preferred embodiments, the heating disc 2 comprises an electric heating element 23 arranged on the bottom side of the heat transfer part 22.

[0015] Compared with the prior art, the electric frying pan has the following beneficial effects:

[0016] The electric frying pan disclosed by the utility model has the following beneficial effects:

[0017] Meanwhile, by forming the reserved gap 4 between the bottom part 31 of the pot body 3 and the heat gathering part 21 of the heating disc 2, the reserved gap 4 provides a deformation space for the heat deformation of the bottom part 31 and the heat gathering part 21 caused by repeated heating to different degrees, so that the electric frying pan can still maintain good contact between the pot body 3 and the heating disc 2 after a certain degree of heat deformation caused by long-time use, ensure uniform heat conduction, and make the pot body 3 have high-efficiency cooking performance. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure diagram of the pot body of the electric frying pan which can be separated from the heating seat.

[0019] Figure 2 is a sectional structure diagram of the electric frying pan.

[0020] Figure 3is a sectional structure schematic diagram of the pot body.

[0021] Figure 4 is a sectional structure schematic diagram of the heating disc of the heating seat.

[0022] Figure 5 is a schematic diagram of the installation structure of the pot body relative to the heating disc.

[0023] Figure 6 is Figure 5 is an enlarged view of the partial A. DETAILED DESCRIPTION

[0024] To further clarify the technical means and effects taken by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects thereof according to the present application are described in detail below in combination with the drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0025] In combination with Figures 1-6 As shown in the drawings, the utility model discloses a heat conduction even electric frying pan, including with heating disc 2's heating seat 1 and can place on the heating seat 1 on the pot body 3, when the pot body 3 places in the heating seat 1 on the state of use, the heat generated by heating disc 2 is transferred to the pot body 3 and can be heated.

[0026] Heating disc 2 includes the disc body that is adapted with pot body 3 and is set on the electric heating element 23 of disc body. Disc body and pot body 3 between have greater contact area, and the heat generated by electric heating element 23 is quickly transferred to pot body 3 through disc body. Therefore, keep the larger area of the adhesion between pot body 3 and heating disc 2, it is favorable to ensure that pot body 3 each part is heated evenly and has higher thermal efficiency.

[0027] Pot body 3 includes pot bottom part 31, pot body part 33 and transition part 32 that is connected between pot bottom part 31 and pot body part 33, and transition part 32 is the spherical surface with the center axis of pot body part 33 as the axis.

[0028] For example, the spherical radius SR of transition part 32, 200mm≤SR≤500mm.

[0029] Generally speaking, the caliber R of pot body part 33 and the diameter r1 of pot bottom part 31 satisfy the proportional relationship: 0.1≤r1 / R≤0.5.

[0030] Pot bottom part 31 can be set as flat bottom. Pot bottom part 31 usually considers the influence of thermal deformation factor, and is usually set as convex spherical surface.

[0031] And, when the bottom 31 adopts a spherical surface, the height difference C between the highest point of the bottom 31 and the lowest point of the bottom 31 is 0.5 mm≤C≤1.0 mm.

[0032] The line between the lowest point and the highest point of the transition portion 32 forms an angle a with the plane where the lowest point of the bottom 31 is located, and a≥10°.

[0033] The heating disc 2 comprises a heat collecting portion 21 corresponding to the bottom 31 and a heat transferring portion 22 corresponding to the transition portion 32, and the heat transferring portion 22 is a spherical surface capable of being attached to the transition portion 32. Therefore, the spherical radius of the heat transferring portion 22 is theoretically the same as the spherical radius SR of the transition portion 32, and in practice, the spherical radius of the heat transferring portion 22 is slightly larger than the spherical radius of the transition portion 32 by 0.1-0.5 mm.

[0034] The disc body of the heating disc 2 comprises a heat collecting portion 21 corresponding to the bottom 31 and a heat transferring portion 22 corresponding to the transition portion 32, and the electric heating element 23 is arranged on the bottom side of the heat transferring portion 22. The electric heating element 23 is usually an electric heating tube which is embedded in the bottom side of the heat transferring portion 22, facilitating the processing and manufacturing.

[0035] And, the diameter r2 of the heat collecting portion 21 is smaller than the diameter r1 of the bottom 31. Since the spherical radius of the transition portion 32 of the pot body 3 is the same as the spherical radius of the heat transferring portion 22 of the heating disc 2, the heat transferring portion 22 can be attached to the transition portion 32 when the pot body 3 is placed on the heating seat 1. At the same time, since the diameter r2 of the heat collecting portion 21 is smaller than the diameter r1 of the bottom 31, a reserved gap 4 is formed between the bottom 31 and the heat collecting portion 21.

[0036] By forming the reserved gap 4 between the bottom 31 of the pot body 3 and the heat collecting portion 21 of the heating disc 2, the reserved gap 4 provides a deformation space for the bottom 31 and the heat collecting portion 21 to deform to different degrees due to repeated heating, so that the pot body 3 and the heating disc 2 can still maintain good contact after the electric frying pan has a certain degree of thermal deformation after long-term use, ensuring uniform heat conduction and enabling the pot body 3 to have high-efficiency cooking performance.

[0037] At the same time, since the heat collecting portion 21 is surrounded by the electric heating element 23, the temperature of the heat collecting portion 21 is relatively concentrated. By forming the reserved gap 4 between the bottom 31 of the pot body 3 and the heat collecting portion 21 of the heating disc 2, the direct contact between the heat collecting portion 21 and the bottom 31 is reduced or even avoided through the reserved gap 4, and the heat is mainly conducted through the air in the reserved gap 4, which can avoid the phenomenon that the temperature of the bottom 31 is too high due to the heat gathering in the bottom 31 during cooking, causing the bottom 31 to be burnt or stuck, and the heat of the heat collecting portion 21 is quickly transferred to the transition portion 32 of the pot body 3 through the heat transferring portion 22, which is conducive to improving the uniform heat conduction performance of the pot body 3.

[0038] The reserved gap 4 is not too large in size. Generally, the maximum axial height S of the reserved gap 4 satisfies 0.5mm≤S≤2.5mm. When the bottom part 31 is a spherical surface, the maximum axial height S of the reserved gap 4 refers to the axial distance from the highest position of the bottom part 31 to the surface of the heat gathering part 21.

[0039] In addition, the linear distance between the highest point f and the lowest point e of the transition part 32 of the pot body 3 is L1, and the linear distance between the highest point d and the lowest point c of the heat transfer part 22 of the heating disc 2 is L2, and L1≥L2. Herein, 15mm≤L1≤25mm.

[0040] Since the diameter r1 of the bottom part 31 is greater than the diameter r2 of the heat gathering part 21, the reserved gap 4 is formed between the bottom part 31 and the heat gathering part 21, and thus the lowest point e of the transition part 32 of the pot body 3 is located obliquely above the lowest point c of the heat transfer part 22.

[0041] In addition, the highest point f of the transition part 32 extends outwardly beyond the highest point d of the heat transfer part 22, and thus the highest point f of the transition part 32 is located obliquely above the highest point d of the heat transfer part 22. Specifically, the highest point f of the transition part 32 extends outwardly beyond the highest point d of the heat transfer part 22 by a length s1, and s1≥0.2mm. In this way, when the pot body 3 is slightly tilted relative to the heating disc 2 during use, the pot body 3 can still ensure that the maximum area of thermal contact is maintained between the transition part 32 and the heat transfer part 22 of the heating disc 2.

[0042] In summary, the electric frying pan disclosed in the present application has the following advantages. The heat transfer part 22 of the heating disc 2 and the transition part 32 of the pot body 3 are designed as spherical surfaces that are in close contact with each other, which not only ensures that the two have a large heat conduction area, but also enables the heat of the heating disc 2 to be more evenly and efficiently transferred to the pot body 3 through spherical surface contact. In addition, the spherical surface cooperation can effectively prevent the pot body 3 from being in poor contact with the heating disc 2 during use. Furthermore, the reserved gap 4 is formed between the bottom part 31 of the pot body 3 and the heat gathering part 21 of the heating disc 2, which provides a deformation space for the bottom part 31 and the heat gathering part 21 to deform to different degrees due to repeated heating. Therefore, even if the electric frying pan is deformed to a certain degree due to long-term use, the pot body 3 and the heating disc 2 can still maintain good contact, ensuring uniform heat conduction and enabling the pot body 3 to have high-efficiency frying performance.

[0043] The above merely provides the preferred embodiments of the present application, but should not be used to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A uniform heat-conducting electric frying pan, comprising a heating base (1) with a heating disc (2) and a pan body (3) which can be placed on the heating base (1); the pan body (3) comprises a pan bottom part (31), a pan body part (33) and a transition part (32) which is connected between the pan bottom part (31) and the pan body part (33), and the transition part (32) is a spherical surface with the central axis of the pan body part (33) as the axis; the heating disc (2) comprises a heat gathering part (21) corresponding to the pan bottom part (31) and a heat transferring part (22) corresponding to the transition part (32); characterized in that, The heat transfer part (22) is a spherical surface capable of being attached to the transition part (32); the diameter r1 of the bottom part (31) is greater than the diameter r2 of the heat collecting part (21), so as to have a reserved gap (4) with a maximum axial height S between the bottom part (31) and the heat collecting part (21) when the pot body (3) is placed on the heating seat (1).

2. The electric frying pan according to claim 1, characterized in that 0.5mm≤S≤2.5mm.

3. The electric frying pan according to claim 1, wherein The caliber R of the pot body part (33) and the diameter r1 of the bottom part (31) satisfy the proportional relationship: 0.1≤r1 / R≤0.

5.

4. The electric frying pan according to claim 1, wherein The spherical radius SR of the transition part (32) is 200mm≤SR≤500mm.

5. The electric frying pan according to claim 1, characterized in that The bottom part (31) is a spherical surface, and the height difference C between the highest point of the bottom part (31) and the lowest point of the bottom part (31) is 0.5mm≤C≤1.0mm.

6. The electric frying pan according to claim 1, wherein The line between the highest point and the lowest point of the transition part (32) forms an angle α with the plane where the lowest point of the bottom part (31) is located, and α≥10°.

7. The electric frying pan according to claim 1, wherein The straight line distance between the highest point and the lowest point of the transition part (32) is L1, and the straight line distance between the highest point and the lowest point of the heat transfer part (22) is L2, and L2≥L1.

8. The electric frying pan according to claim 7, characterized in that 15mm≤L1≤25mm.

9. The electric frying pan according to claim 1, characterized in that The highest point of the transition part (32) extends outward beyond the highest point of the heat transfer part (22) by a length s1, and s1≥0.2mm.

10. The electric frying pan according to claim 9, characterized in that The heating disc (2) comprises an electric heating element (23), and the electric heating element (23) is arranged on the bottom side of the heat transfer part (22).

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