A magnetic oil-concentrating pot

Abstract

This utility model discloses a magnetically conductive oil-gathering pot, comprising a pot body with a concave oil-gathering bottom. The concave oil-gathering bottom includes a first oil-gathering area in the center of the bottom, a second oil-gathering area surrounding the first oil-gathering area, forming an obtuse angle with the first area, and a third oil-gathering area surrounding the second oil-gathering area. The third oil-gathering area is either a flat surface or an inclined surface sloping towards the center. The outer bottom surface of the pot body is coated from the inside out with a magnetically conductive powder coating, an aluminum powder coating, and a high-temperature resistant coating. This utility model features a multi-structured oil-gathering area design on the bottom, effectively controlling the deformation of the pot bottom during open flame heating and induction cooker heating. The outer bottom eliminates the need for a double-layered magnetic sheet, employing a cold-spraying process, resulting in a stable bottom that is not easily deformed and has high electromagnetic heating efficiency. Anti-slip steps are provided on the bottom of the pot to prevent the convex oil-gathering bottom from slipping and spinning on flat surfaces or on an induction cooker.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensil technology, and in particular to a magnetic oil-concentrating pot. Background Technology

[0002] Existing magnetic oil-concentrating frying pans mostly have a large, concave, rounded bottom structure for oil concentration. To achieve the magnetic function, a magnetically conductive composite bottom sheet is added to the bottom. However, due to the difference in thermal expansion and contraction coefficients between the aluminum pan body and the magnetically conductive composite bottom sheet, the bottom of the pan will bulge outward during heating, and the deformation amount is ≥2.5mm. The deformation will slightly rebound after the pan cools down, but after repeated use, the oil-concentrating effect is often lost.

[0003] To address the issue of oil accumulation due to the large, concave arc and the deformation during heating, a multi-segment recessed structure enhances bottom stability and effectively controls heating deformation. Combined with traditional cold-spraying technology, a magnetically conductive layer is cold-sprayed onto the outer bottom of the pot, enabling its use on induction cooktops. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a magnetic oil-concentrating pot.

[0005] The present invention adopts the following technical solution:

[0006] A magnetic oil-collecting pot includes a pot body with a concave oil-collecting bottom. The concave oil-collecting bottom includes a first oil-collecting region in the middle of the bottom, a second oil-collecting region around the first oil-collecting region, and an obtuse angle between the second and first oil-collecting regions. A third oil-collecting region is located around the second oil-collecting region and is either a plane or an inclined surface sloping towards the center. The outer bottom surface of the pot body is coated with a magnetic powder coating, an aluminum powder coating, and a high-temperature resistant coating from the inside out.

[0007] Preferably, the bottom of the pot body is provided with a non-slip step, and the pot body and the step are integrally formed.

[0008] Preferably, the step height is 3.5-4.5mm, the contact width between the step and the plane is ≥2.5mm, and the step height is greater than the concave depth H4 of the bottom of the pot.

[0009] Preferably, the magnetic powder coating is an iron powder coating with a thickness ≥0.3mm and a particle size of 100-600 mesh.

[0010] Preferably, the thickness of the aluminum powder coating is ≥0.2mm, and the particle size of the aluminum powder is between 300-1000 mesh.

[0011] Preferably, the high-temperature resistant coating is a ceramic coating layer or a high-temperature resistant paint.

[0012] Preferably, the diameter D1 of the first oil-gathering region is 1 / 2 to 2 / 3 of the inner bottom diameter of the pot, and the sinking depth H4 is 1.5-3.5 mm.

[0013] Preferably, the second oil-gathering region is an inclined surface, forming an obtuse angle ≥160° with the first oil-gathering region, and the second oil-gathering region transitions to the first oil-gathering region by an arc, and the third oil-gathering region transitions to the second oil-gathering region by an arc.

[0014] Preferably, the step cross-section is trapezoidal or semi-circular, and the step can be continuous or discontinuous.

[0015] Preferably, the inner side of the bottom of the pot body is a flat surface or a textured surface.

[0016] The beneficial effects of this utility model are: (1) The pot bottom is designed with a multi-structure oil-collecting area, which can effectively control the deformation of the pot bottom during open flame heating and induction cooker heating; (2) The outer bottom of the pot eliminates the re-coating of the magnetic sheet and adopts the cold melt spraying process to cold spray the magnetic powder coating + aluminum powder coating + high temperature resistant coating on the outer bottom of the pot. The cold spray bottom is stable and not easily deformed, and has a high electromagnetic heating efficiency. After the outer coating is covered, the pot is easy to clean and has good corrosion resistance; (3) Anti-slip steps are set on the bottom of the pot to prevent the oil-collecting convex bottom from slipping and spinning on the flat surface or induction cooker. Attached Figure Description

[0017] Figure 1 This is an exploded view of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] Figure 3 yes Figure 2 An enlarged view of point A in the middle;

[0020] In the picture: 1. Pot body, 2. Magnetic powder coating, 3. Aluminum powder coating, 4. High temperature resistant coating. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0022] Example: Figures 1-3As shown, a magnetic oil-collecting pot includes a pot body 1. The bottom of the pot body is provided with a concave oil-collecting bottom. The concave oil-collecting bottom includes a first oil-collecting area in the middle of the bottom of the pot body, a second oil-collecting area around the first oil-collecting area, and an obtuse angle between the second oil-collecting area and the first area. A third oil-collecting area is provided around the second oil-collecting area. The third oil-collecting area is a plane or an inclined surface sloping towards the center. The outer bottom surface of the pot body is coated with a magnetic powder coating 2, an aluminum powder coating 3, and a high-temperature resistant coating 4 from the inside to the outside.

[0023] The pot bottom features a multi-layered oil-gathering design. First, a sunken oil-gathering area is located in the center of the bottom, with a height H4 of 1.5-3.5mm and a diameter of 1 / 2 to 2 / 3 of the pot's bottom diameter. A second oil-gathering area surrounds the first, forming an angle ≥160° with the first area. A third oil-gathering area surrounds the second, and this third area is either flat or slightly sloping towards the center. Rounded corners are provided between each area to ensure a smooth transition to the bottom. This design effectively controls bottom deformation during both open flame and induction cooker heating.

[0024] The magnetic strip on the bottom of the pot is removed because its shape is fixed. Due to the difference in thermal expansion and contraction coefficients after bonding with the aluminum pot body, the bottom will bulge upwards during open flame heating, causing oil to spread outwards. The bottom of the pot is coated with a layer of magnetic powder (iron powder) using a spraying process. The iron powder has a particle size of 100-600 mesh and a coating thickness ≥0.3mm. After cold spraying, the pot is placed on a standard induction cooker with an induction power of no less than 1300W and an induction frequency of no less than 25Hz. A layer of aluminum powder is then sprayed on top of the cold-sprayed magnetic powder to prevent oxidation or rusting from prolonged exposure to air. The aluminum powder has a thickness ≥0.2mm and a particle size between 300-1000 mesh. An easy-to-clean, high-temperature resistant coating, such as a ceramic coating, is then applied over the aluminum powder. In heating tests, the cold-sprayed bottom is stable, not easily deformed, and has high electromagnetic heating efficiency. The outer coating makes the pot easy to clean and provides good corrosion resistance.

[0025] An anti-slip step is integrated into the bottom of the cookware, preventing the bulging bottom from slipping and spinning on flat surfaces or induction cookers. The bottom of the cookware has a uniform thickness, while the sidewall thickness gradually changes, with the aluminum material at the thinner section of the sidewall being extruded to form the anti-slip step. The height H of the anti-slip step is 3.5-4.5mm, where H≧H3>H2>H1 and H>H4. If the step height is too high, it will affect the cookware's electromagnetic induction; if the step height is too low, it will affect the oil-collecting effect. The width of the anti-slip step in contact with the flat surface is ≥2.5mm.

[0026] This embodiment of the product is a cold-spray bottom oil-gathering frying pan. The bottom, after cold spraying, has excellent magnetic conductivity. Because it uses iron powder for the cold spray bottom, rather than a fixed-shape composite bottom sheet, the product maintains stable performance and is not easily deformed during heating. The inner bottom of the product features a central first oil-gathering area, a second oil-gathering area, and a third oil-gathering area to block oil. When cooking oil is poured into the center of the inner bottom, the temperature in the center of the pan is highest during heating, causing the central area to gradually bulge. If the pan bottom were a completely concave arc surface, after heating with an open flame, the bottom would gradually bulge upwards. The existing design's concave arc surface would become an upward-convex arc surface, causing the cooking oil to flow to the periphery, failing to achieve the oil-gathering effect. Furthermore, due to the rapid heating speed in the first 30 seconds on an induction cooker (on a typical induction cooker at 1500W, the pan can rise from room temperature to 150℃ in 30 seconds), the sudden temperature increase of the pan bottom would cause it to concave downwards, easily leading to the product spinning and becoming unstable on the induction cooker. The multi-segment oil-gathering structure design effectively controls the deformation of the bottom when heated. The increased oil-gathering structure of the inner bottom ensures that the center of the pot, which is at its hottest point, remains moist with cooking oil even when the pot is deformed by heat. This prevents food from burning, allowing for the cooking of delicious food that is also healthier.

[0027] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A magnetic conductive oil collecting pot comprising a pot body, the bottom of the pot body is provided with a concave oil collecting bottom, characterized in that, The concave oil-gathering bottom includes a first oil-gathering area set in the middle of the bottom of the pot, a second oil-gathering area set around the outer edge of the first oil-gathering area, the second oil-gathering area and the first area forming an obtuse angle, and a third oil-gathering area set around the outer edge of the second oil-gathering area. The third oil-gathering area is a plane or an inclined surface sloping towards the center. The outer bottom surface of the pot body is coated with a magnetic powder coating, an aluminum powder coating and a high-temperature resistant coating from the inside to the outside.

2. The magnetic flux guiding oil pot according to claim 1, wherein The bottom of the pot body is provided with a non-slip step, and the pot body and the step are integrally formed.

3. The magnetic flux guiding oil pot according to claim 2, wherein The step height is 3.5-4.5mm, the contact width between the step and the plane is ≥2.5mm, and the step height is greater than the concave depth H4 of the bottom of the pot.

4. The magnetic flux guiding oil pot according to claim 1, wherein The magnetic powder coating is an iron powder coating with a thickness ≥0.3mm and a particle size of 100-600 mesh.

5. The magnetic flux guiding oil pot according to claim 1, wherein The thickness of the aluminum powder coating is ≥0.2mm, and the particle size of the aluminum powder is between 300-1000 mesh.

6. The magnetic flux guiding oil pot according to claim 1, wherein The high-temperature resistant coating is a ceramic coating layer or a high-temperature resistant paint.

7. The magnetic flux guiding oil pot according to claim 1, wherein The diameter D1 of the first oil-gathering area is 1 / 2 to 2 / 3 of the inner bottom diameter of the pot, and the sinking depth H4 is 1.5-3.5 mm.

8. The magnetic flux guiding oil pot according to claim 1, wherein The second oil-gathering region is an inclined surface, forming an obtuse angle ≥160° with the first oil-gathering region. The second oil-gathering region transitions to the first oil-gathering region with an arc, and the third oil-gathering region transitions to the second oil-gathering region with an arc.

9. The magnetic flux guiding oil pot according to claim 2, wherein The step has a trapezoidal or semi-circular cross-section, and the step can be continuous or discontinuous.

10. The magnetic flux guiding oil pot according to claim 1, wherein The inner side of the bottom of the pot body is either flat or has a textured surface.

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