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CN-224219952-U - Pot and cooking utensil

CN224219952UCN 224219952 UCN224219952 UCN 224219952UCN-224219952-U

Abstract

The utility model provides a pot liner and a cooking utensil. The containing cavity of the pot liner substrate is provided with a microstructure, the microstructure comprises a plurality of pits which are randomly distributed on part of the inner surface, the occupied area of the pits on the part of the inner surface is S Concave recess , the occupied area of the part of the inner surface is S Inner part ,S Concave recess and 65% S Inner part ~98%S Inner part , the lower concave surface of each pit is a part of a spherical surface, the opening span of each pit on the inner surface is 0.05-0.5 mm in size D Concave recess , and/or the depth H Concave recess of each pit is 0.05-0.5 mm, and the glossiness of the part of the inner surface provided with the microstructure is 20 GU-40 GU. The microstructure that the pot courage set up can effectually reduce the area of contact with rice in the process of cooking, and the concave-convex structure of taking the radian can produce centripetal membrane shrinkage force after pasting at the starch membrane that the in-process produced simultaneously, and the membrane shrinkage force makes starch membrane break away from the substrate surface and reaches the effect that physical is nonstick.

Inventors

  • LI JIANG
  • LV HUA
  • LI ZEYONG

Assignees

  • 浙江苏泊尔家电制造有限公司

Dates

Publication Date
20260512
Application Date
20250328

Claims (10)

  1. 1. A pot liner, which comprises a pot liner, characterized by comprising the following steps: The pot liner comprises a pot liner substrate forming a containing cavity, wherein a microstructure is arranged on at least part of the inner surface of the containing cavity, the microstructure comprises a plurality of pits which are randomly distributed on the part of the inner surface, the area occupied by the pits on the part of the inner surface is S Concave recess , and the area of the part of the inner surface is S Inner part ,S Concave recess and is 65% S Inner part ~98%S Inner part ; The concave surface of each pit is a part of a spherical surface; The dimension D Concave recess of the opening span of the single pit on the inner surface is 0.05-0.5 mm, and/or the depth H Concave recess of the pit is 0.05-0.5 mm; The glossiness of the inner surface of the part provided with the microstructure is 20 GU-40 GU.
  2. 2. The bladder according to claim 1 wherein the bladder base has a geometric central axis, and wherein the cross-sectional profile of the dimple, in a cross-section through the geometric central axis, is a circular arc having a radius of curvature that varies by less than or equal to 10%.
  3. 3. The pot liner according to claim 1, wherein the pot liner base body has a shape of a revolution body having a central axis, and a cross-sectional profile of the pit is a circular arc shape having a variation of a radius of curvature of 10% or less in a cross-section passing through the central axis.
  4. 4. The pot liner according to claim 1, wherein a PVD coating is provided on the part of the inner surface, the PVD coating having a thickness of 0.1 μm to 1.1 μm.
  5. 5. The pot liner of claim 4, wherein the PVD coating satisfies at least one of the following conditions: The PVD coating layer has a Vickers hardness of greater than 1200HV and/or, The PVD coating layer is a metal film or a metal ceramic film.
  6. 6. The pot liner according to claim 4, wherein the glossiness of at least part of the inner surface to which the PVD coating layer is attached is 30 GU-40 GU, and/or, The roughness Ra of at least part of the inner surface to which the PVD coating layer is attached is 2.5 μm to 3.5 μm.
  7. 7. The pot liner according to claim 1, wherein, The material of the pot liner substrate is stainless steel, or The inner surface of the pot liner comprises the first metal layer, the heat conduction layer and the second metal layer which are sequentially connected from inside to outside along the thickness direction of the pot liner, the first metal layer is made of 304 stainless steel or 316 stainless steel.
  8. 8. The pot of any one of claims 1 to 7, wherein the partial inner surface refers to a bottom inner surface and a bottom side junction inner surface of the receiving cavity.
  9. 9. The pot of claim 8, wherein the bottom side junction inner surface refers to the portion of the cooking cavity inner surface having a tangent to the surface at an angle equal to or greater than 30 ° from a vertical plane perpendicular to the horizontal plane.
  10. 10. A cooking appliance, wherein the cooking appliance is provided with a pot liner according to any one of claims 1 to 9.

Description

Pot and cooking utensil Technical Field The utility model relates to the technical field of cooking appliances, in particular to a pot liner and a cooking appliance. Background In the functional surface treatment for the pot liner of the cooking utensil, the wear resistance, non-tackiness and service life of the product are directly affected by the substrate surface microstructure design and the suitability of the coating process. In the prior art, the surface of the substrate is often formed into a micro-scale pit structure by chemical etching or mechanical sandblasting to reduce the adhesion of food. Most of pits formed by chemical etching are polygonal structures, and sharp edges of the pits are easy to embed food residues, so that the pits need to be flushed forcefully during cleaning and are difficult to thoroughly clean. The pit profile formed by mechanical sand blasting has large curvature fluctuation and high surface roughness. Such pits increase the difficulty of coating, and the peeling of the film layer can be accelerated after coating. Accordingly, there is a need to provide a pot and a cooking appliance that at least partially solve the above-mentioned problems. Disclosure of utility model In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. To at least partially solve the above problems, a first aspect of the present utility model provides a pot liner for a cooking appliance, including: The pot liner comprises a pot liner substrate forming a containing cavity, wherein a microstructure is arranged on at least part of the inner surface of the containing cavity, the microstructure comprises a plurality of pits which are randomly distributed on the part of the inner surface, the area occupied by the pits on the part of the inner surface is S Concave recess , and the area of the part of the inner surface is S Inner part ,S Concave recess and is 65% S Inner part ~98%S Inner part ; The concave surface of each pit is a part of a spherical surface; The dimension D Concave recess of the opening span of the single pit on the inner surface is 0.05-0.5 mm, and/or the depth H Concave recess of the pit is 0.05-0.5 mm; The glossiness of the inner surface of the part provided with the microstructure is 20 GU-40 GU. The micro-structure is arranged on at least part of the inner surface of the pot liner, and is randomly and overlapped on the inner surface of the pot liner at a concentration of 70% -95% by the micron-sized concave spherical surface, and the glossiness of at least part of the inner surface is set to 20 GU-40 GU. Optionally, the pot liner substrate is provided with a geometric central axis, and on a section passing through the geometric central axis, the section profile of the pit is in a circular arc shape with the variation of the curvature radius less than or equal to 10%. Optionally, the pot liner substrate is in a shape of a revolution body with a central axis, and on a section passing through the central axis, the section profile of the pit is in a circular arc shape with the variation of the curvature radius less than or equal to 10%. According to the scheme, the pit is smooth and flat, the arc degree is good, the pit section profile is approximately an ideal arc, uniform deposition is facilitated, the adhesion force of the PVD coating layer is optimized, and the wear resistance and the spalling resistance are improved. Optionally, a PVD coating layer is disposed on the part of the inner surface, and the thickness of the PVD coating layer is 0.1 μm to 1.1 μm. According to the scheme, the PVD coating layer is ensured to be wear-resistant enough, the surface microstructure characteristics are not affected, the pit structure is uniformly covered, the adhesive force and durability are enhanced, and the peeling risk is reduced. Optionally, the PVD coating layer comprises titanium atoms and nickel atoms, the rest is mainly chromium nitride, the mass ratio of the titanium atoms is 3% -10%, and/or the mass ratio of the nickel atoms is 5% -8%. According to the scheme, the PVD coating layer reduces the surface energy by regulating the mass ratio of titanium atoms and/or nickel atoms to the synergistic ratio of chromium nitride, and the non-sticking performance of the pot liner is remarkably improved. Optionally, the vickers hardness of the PVD coating is greater than 1200HV. According to the scheme, the PVD coating layer has extremely high hardness and high wear resistance, and can be used for a long time without being scratched or peeled off easily. Optionally, the PVD coating layer is a metal film or a cermet film. According to the scheme, the PVD coating layer can protect the bas