阅读说明：本技术 多层复合锅及制作方法 (Multilayer composite pot and manufacturing method ) 是由 程长青 于 2020-05-13 设计创作，主要内容包括：本发明一种多层复合锅包括内锅体,外锅体,导热体,支架。支架通过焊接或烧结固定在内锅体和外锅体之间,导热体在外锅体和内锅体之间的空腔中,外锅体、内锅体、导热体和支架结合构造固定为一体化锅底。一体化锅底具有耐低压和抗高压的性能,一体化锅底提高了锅底的平面承压效能。空腔是一个无氧空间,避免或降低了导热体与锅体不发生显著的化学反应或物理变化。导热体在空腔中的真空或负压下进行固液相变的导热传热,液体状的导热体提高了热能的传热速度,增大了一体化锅底上热量的均热性,一体化锅底中心的受热热量快速扩散,避免一体化锅底的局部锅体出现过热损坏,一体化锅底的外锅体和内锅体受热后不会鼓胀变形。(The invention relates to a multilayer composite pot, which comprises an inner pot body, an outer pot body, a heat conductor and a bracket. The bracket is fixed between the inner pot body and the outer pot body by welding or sintering, the heat conductor is arranged in the cavity between the outer pot body and the inner pot body, and the outer pot body, the inner pot body, the heat conductor and the bracket are combined and fixed into an integrated pot bottom. The integrated pot bottom has the performance of low pressure resistance and high pressure resistance, and the plane pressure-bearing efficiency of the pot bottom is improved. The cavity is an oxygen-free space, so that the phenomenon that the heat conductor and the pot body do not have obvious chemical reaction or physical change is avoided or reduced. The heat conductor conducts heat of solid-liquid phase change under vacuum or negative pressure in the cavity, the liquid heat conductor improves the heat conduction speed of heat energy, the heat uniformity of heat on the integrated bottom of a boiler is improved, the heated heat at the center of the integrated bottom of a boiler is quickly diffused, the local boiler body of the integrated bottom of a boiler is prevented from being damaged by overheating, and the outer boiler body and the inner boiler body of the integrated bottom of a boiler cannot expand and deform after being heated.)

1. A multilayer composite pot comprises an inner pot body (1), an outer pot body (2), a heat conductor (3) and a bracket (4); the method is characterized in that: the inner pot body (1), the outer pot body (2), the heat conductor (3) and the bracket (4) are combined to form an integrated pot bottom (6);

the support (4) is fixed between the inner pot body (1) and the outer pot body (2) through welding, the upper edge of the outer pot body (2) is fixed on the pot body of the inner pot body (1), and a cavity (5) is arranged between the outer pot body (2) and the inner pot body (1);

the heat conductor (3) is arranged in the cavity (5) between the outer pot body (2) and the inner pot body (1), and the volume of the heat conductor (3) accounts for 35-80% of the volume of the cavity (5);

the bracket (4) is an I-shaped metal strip or a metal round pad;

the heat conductor (3) is low-melting-point alloy or soft solder; the heat conductor (3) conducts heat transfer through solid-liquid phase change under vacuum or negative pressure in the cavity (5).

2. The multi-layer composite pan of claim 1, wherein: the height of the I-shaped metal strip is 2-5 mm, and the length is 10-80 mm.

3. The multi-layer composite pan of claim 1, wherein: the thickness of the metal round pad is 2-5 mm, and the diameter is 5-10 mm.

4. The multi-layer composite pan of claim 1, wherein: the adjacent distance between the support (4) and the support (4) is 15-50 mm.

5. A manufacturing method of a multilayer composite pot is characterized in that: the multilayer composite pot comprises an inner pot body (1), an outer pot body (2), a heat conductor (3) and a bracket (4);

the manufacturing method of the multilayer composite pot comprises the following steps:

firstly, fixing a support (4) on an outer pot body (2), wherein the adjacent distance between the support (4) and the support (4) is 15-50 mm;

secondly, installing a heat conductor (3) in a gap between the upper supports (4) of the outer pot body (2), wherein the volume of the heat conductor (3) accounts for 35-80% of the volume of the cavity (5);

thirdly, the inner pot body (1) is placed on the outer pot body (2), and the bottom of the inner pot body (1) is fixed at the other end of the bracket (4); a cavity (5) is formed between the outer pot body (2) and the inner pot body (1) after the upper edge of the outer pot body (2) and the inner pot body (1) are welded;

fourthly, the inside of the cavity (5) with the heat conductor (3) is in a vacuum or negative pressure state;

and step five, cleaning, polishing and surface treatment are carried out on the outer pot body (2) and the inner pot body (1).

Technical Field

The invention relates to a pot, in particular to a multilayer composite pot.

Background

The food is cooked on the pot bottom, and due to the fact that the temperature difference of all parts of the pot body is large due to heating factors, the contact temperature difference of the food at different positions of the pot body is large, the problem that the food at the pot bottom is burnt and the food at other positions in the pot is not cooked easily occurs, and the appearance, the taste and the nutritional value of food are influenced.

In order to improve the soaking heat transfer of the pot bottom, the pot bottom adopts a multi-layer solid composite material pot bottom which is composed of an inner pot body made of a stainless steel plate, an intermediate layer made of an aluminum material layer or a copper material layer and an outer pot body made of a stainless steel layer. However, the heat conduction ranges of the solid metal copper plate and the solid metal aluminum plate are locally present, and further improvement is needed to improve the soaking heat transfer effect of the pot bottom.

Disclosure of Invention

The invention aims to solve the technical problem of uneven heat transfer of the pot bottom of the pot in the existing market and provides a multilayer composite pot. Other accessories such as handles, pot covers and the like on the multilayer composite pot belong to the conventional configuration in the application, and are not shown and stated in the attached drawings in the application document.

In order to achieve the purpose, the invention is realized by the following technical scheme: a multi-layer composite pot comprises an inner pot body, an outer pot body, a heat conductor and a bracket.

The inner pot body and the outer pot body are made of metal plates, and the metal plates are stainless steel plates, or aluminum plates, or metal material plates according to requirements. The thickness of the pot body is set as required, the outer pot body is a stainless steel plate with the thickness of 1-3 mm, and the inner pot body is a stainless steel plate with the thickness of 0.5-3 mm. The metal plate is pressed into the outer pot body and the inner pot body through the die, the diameter specifications of the outer pot body and the inner pot body are correspondingly matched, the height of the inner pot body is 90-380 mm, and the height of the outer pot body is 20-60 mm. The technology of stamping the pot body is the existing mature technology, and the detailed description of the application is omitted.

The pot bottom of the multilayer composite pot is an integrated pot bottom. The outer pot body, the inner pot body, the heat conductor and the support are combined and fixed into an integrated pot bottom.

The support is fixed between the inner pot body and the outer pot body by welding, one end of the support is fixed on the inner surface of the outer pot body, the outer surface of the inner pot body is fixed on the other end of the support, and the upper edge of the outer pot body is fixed on the pot body of the inner pot body by welding. A cavity is arranged between the outer pot body and the inner pot body, and an inner communicated cavity is arranged between the inner pot body and the outer pot body which are fixedly supported by the bracket.

The support is an I-shaped metal strip or a metal round pad. The manufacturing materials of the bracket and the outer pot body and the inner pot body are the same or similar. The same or similar materials are convenient for fixed connection, and the expansion with heat and the contraction with cold are synchronous and consistent.

The height of the I-shaped metal strip is 2-5 mm, and the length of the I-shaped metal strip is 10-80 mm; the thickness of the metal round pad is 2-5 mm, and the diameter is 5-10 mm.

The connection area between the two end surfaces of the I-shaped metal strip and the inner pot body and between the two end surfaces of the I-shaped metal strip and the outer pot body is large, the welding area is enlarged, the welding and the fixing are convenient, and the connection firmness of the I-shaped metal strip and the inner pot body and the outer pot body is enhanced. The middle position of the I-shaped metal strip is small, and the I-shaped metal strip reduces the flowing viscous resistance of the liquid metal and facilitates the flowing of the liquid metal.

The heat conductor is arranged in the cavity between the outer pot body and the inner pot body. The inner part of the cavity filled with the heat conductor is in a vacuum or negative pressure state. The volume of the heat conductor is calculated according to the volume of the cavity between the outer pot body and the inner pot body, and the volume of the filled heat conductor accounts for 35-80% of the volume of the cavity. The heat conductor has 35% -80% space occupation in the cavity, and 20% -65% reserved space in the cavity guarantees that the integrated pot bottom can not be expanded due to the fact that the solid heat conductor is heated and then melted into the liquid heat conductor.

The heat conductor is low-melting-point alloy or soft solder. The low melting point alloy is a metal having a melting point of 300 ℃ or lower and an alloy thereof, and is usually composed of a low melting point metal element such as Bi, Sn, Pb, In, or the like. The solder is a brazing material having a melting point of 450 ℃ or lower. The multilayer composite pot selects the applicable heat conductor according to different application scenes and required temperature. The heat conductor was selected to have the following characteristics: 1. having a suitable melting point. 2. Elements in the material which are not harmful to human bodies. 3. Compatibility of the heat conductor with the pot body and the bracket. The heat conductor in the cavity does not undergo significant chemical reaction or physical change with the pot body, or changes but is not enough to affect the working performance of the heat conductor.

The heat conductor is made of materials with different melting point temperatures, such as a heat conductor with a melting point of 80 ℃, or a heat conductor with a melting point of 100 ℃, or a heat conductor with a melting point of 120 ℃.

The manufacturing method of the multilayer composite pot comprises the following steps:

step one, the bracket is fixed on the outer pot body. One end of the bracket is fixed on the inner surface of the outer pot body by a fixed welding technology, and the outer pot body and the bracket are fixedly connected into a whole; the support is fixed on the outer pot body, and the adjacent distance between the support and the support is 15-50 mm.

And step two, filling a heat conductor. The heat conductor is arranged in the gap between the upper brackets of the outer pot body. The solid heat conductor is in the form of powder, granule, or strip.

And step three, fixing the inner pot body on the bracket. The inner pot body is placed on the outer pot body, and the bottom of the inner pot body is attached to the bracket on the outer pot body. The bottom pot body of the inner pot body is fixed on the other end of the bracket by welding technology.

And step four, the outer pot body and the inner pot body are fixed into a whole. The upper edge of the outer pot body is fixed on the pot body of the inner pot body by welding. An exhaust pipe for vacuumizing is arranged between the upper edge of the outer pot body and the inner pot body in advance, one end of the exhaust pipe is communicated with a cavity between the outer pot body and the inner pot body, and the other end of the exhaust pipe extends out of the upper edge of the pot edge. Note: the exhaust pipe is not shown in the drawings attached to the present specification.

And step five, the interior of the cavity is in a vacuum or negative pressure state. A sealed cavity is formed between the outer pot body and the inner pot body after the upper edge of the outer pot body and the inner pot body are welded, and the inner part of the cavity is communicated up and down. After air in the cavity is pumped and exhausted by an external vacuum device through the exhaust pipe, the exhaust pipe is plugged in a welding mode, and the inside of the cavity with the heat conductor after plugging of the exhaust pipe is in a vacuum or negative pressure state.

And step six, processing the surfaces of the outer pot body and the inner pot body. The outer pot body and the inner pot body are cleaned, polished and processed.

And step seven, assembling the product. The outer pot body is provided with other accessories such as a handle and the like.

And step eight, checking. And packaging the qualified finished product of the pot to finish production.

The heat transfer method of the multilayer composite pot and the advantages are as follows:

1. the outer pot body of the integrated pot bottom is a heated end, the heat conductor conducts heat and conducts heat in a solid-liquid phase change mode under vacuum or negative pressure in the cavity, and the liquid heat conductor carries heat to be transferred from the outer pot body of the integrated pot bottom to food materials, oil or water in the pot of the inner pot body.

2. When the outer pot body of the integrated pot bottom is heated by external heat sources such as liquefied gas, an induction cooker, a carbon fire and the like, the solid heat conductor in the cavity of the integrated pot bottom melts liquid and is changed into a liquid heat conductor, the liquid heat conductor conducts heat in a flowing mode in the cavity, the liquid heat conductor conducts heat to the pot body of the inner pot body in a mode of carrying a large amount of heat energy, and the heat energy is conducted to food materials, oil or water in the pot through the inner pot body.

3. The heat conductor conducts heat of solid-liquid phase change under vacuum or negative pressure in the cavity, the liquid heat conductor improves the heat conduction speed of heat energy, the heat uniformity of heat on the integrated pot bottom is improved, the heated heat at the center of the integrated pot bottom is quickly diffused, and overheating damage of a local pot body of the integrated pot bottom is avoided.

4. The integrated bottom of the inner pot body and the outer pot body fixedly supported by the bracket has low pressure resistance and high pressure resistance, the plane pressure-bearing efficiency of the integrated bottom is improved, and the outer pot body and the inner pot body of the integrated bottom cannot expand and deform after being heated.

5. The interior of the cavity is in a vacuum or negative pressure state or filled with inert gas. The cavity is an oxygen-free space, so that the phenomenon that the heat conductor and the pot body do not have obvious chemical reaction or physical change is avoided or reduced.

6. The interior of the cavity is in a vacuum or negative pressure state; when the heat conductor is subjected to solid-liquid phase change, the liquid heat conductor with the increased volume cannot cause bulging deformation of the integrated pot bottom.

Compared with the prior pan, the invention has the following beneficial effects: a multi-layer composite pot comprises an inner pot body, an outer pot body, a heat conductor and a bracket. The bracket is fixed between the inner pot body and the outer pot body by welding, the heat conductor is arranged in the cavity between the outer pot body and the inner pot body, and the outer pot body, the inner pot body, the heat conductor and the bracket are combined and fixed into an integrated pot bottom. The integrated pot bottom has the performance of low pressure resistance and high pressure resistance, and the plane pressure-bearing efficiency of the pot bottom is improved. The cavity is an oxygen-free space, so that the phenomenon that the heat conductor and the pot body do not have obvious chemical reaction or physical change is avoided or reduced. The heat conductor conducts heat of solid-liquid phase change under vacuum or negative pressure in the cavity, the liquid heat conductor improves the heat conduction speed of heat energy, the heat uniformity of heat on the integrated bottom of a boiler is improved, the heated heat at the center of the integrated bottom of a boiler is quickly diffused, the local boiler body of the integrated bottom of a boiler is prevented from being damaged by overheating, and the outer boiler body and the inner boiler body of the integrated bottom of a boiler cannot expand and deform after being heated.

Description of the drawings:

FIG. 1 is a schematic structural view of a multi-layer composite pan of the present invention;

FIG. 2 is a schematic structural view of an integrated pan bottom of the multilayer composite pan of the present invention;

fig. 3 is a schematic view of the installation of the support of the multi-layer composite pan of the invention.

In the figure: 1. the pot comprises an inner pot body, 2 an outer pot body, 3 a heat conductor, 4 a support, 5 a cavity, 6 and an integrated pot bottom.

The specific implementation mode is as follows:

the invention is further described below with reference to the accompanying drawings and examples.

Example (b):

as shown in figure 1 and figure 2, the multilayer composite pot comprises an inner pot body 1, an outer pot body 2, a heat conductor 3 and a bracket 4.

The outer pot body 2 is a stainless steel plate with the thickness of 1.5mm, and the inner pot body 1 is a stainless steel plate with the thickness of 1.2 mm. The diameter specifications of the outer pot body 2 and the inner pot body 1 are matched correspondingly, the height of the inner pot body 1 is 180mm, and the height of the outer pot body 2 is 30 mm.

An integrated pot bottom 6 is arranged on the multilayer composite pot. The inner pot body 1, the outer pot body 2, the heat conductor 3 and the bracket 4 are combined and fixed into an integrated pot bottom 6.

The support 4 is fixed between the inner pot body 1 and the outer pot body 2 by welding, and the upper edge of the outer pot body 2 is fixed on the pot body of the inner pot body 1. A cavity 5 is arranged between the outer pot body 2 and the inner pot body 1.

As shown in fig. 2, the bracket 4 shown in fig. 3 is an i-shaped metal strip, the height of which is 3mm and the length of which is 12 mm.

The heat conductor 3 is arranged in the cavity 5 between the outer pot body 2 and the inner pot body 1, and the inside of the cavity 5 filled with the heat conductor 3 is in a negative pressure state.

The heat conductor 3 is a low melting point alloy, and the heat conductor 3 is a heat conductor with a melting point of 80 ℃.

The manufacturing method of the multilayer composite pot comprises the following steps:

step one, the bracket 4 is fixed on the outer pot body 2, and the adjacent distance between the bracket 4 and the bracket 4 is 15-50 mm.

And step two, the heat conductor 3 is arranged in a gap between the upper brackets 4 of the outer pot body 2, and the volume of the heat conductor 3 accounts for 60 percent of the volume of the cavity 5. The solid heat conductor 3 is granular.

Thirdly, the inner pot body 1 is placed on the outer pot body 2, and the bottom of the inner pot body 1 is attached to the bracket 4 on the outer pot body 2; the bottom pot body of the inner pot body 1 is fixed on the other end of the bracket 4 by welding technology.

Fourthly, a sealed cavity 5 is formed between the outer pot body 2 and the inner pot body 1 after the upper edge of the outer pot body 2 and the inner pot body 1 are welded, and the inside of the cavity 5 with the heat conductor 3 is in a vacuum state.

And step five, cleaning, polishing and surface treatment are carried out on the outer pot body 2 and the inner pot body 1.

The heat transfer method of the multilayer composite pot and the advantages are as follows:

1. the outer pot body 2 of the integrated pot bottom 6 is a heated end, the heat conductor 3 conducts heat of solid-liquid phase change under vacuum in the cavity 5, and the liquid heat conductor 3 carries heat to be transferred from the outer pot body 2 of the integrated pot bottom 6 to food materials or oil or water in the pot of the inner pot body 1.

2. When the outer pot body 2 of the integrated pot bottom 6 is heated by external heat sources such as liquefied gas, an induction cooker or a carbon fire, the solid heat conductor 3 in the cavity 5 of the integrated pot bottom 6 melts liquid into the liquid heat conductor 3, the liquid heat conductor 3 conducts heat in the cavity 5 in a flowing mode, the liquid heat conductor 3 conducts heat to the pot body of the inner pot body 1 in a mode of carrying a large amount of heat energy, and the heat energy is conducted to food materials or oil or water in the pot through the inner pot body 1.

3. The heat conductor 3 conducts heat of solid-liquid phase change under vacuum in the cavity 5, the liquid heat conductor 3 improves the heat conduction speed of heat energy, the heat uniformity of the heat on the integrated bottom 6 is increased, the heated heat at the center of the integrated bottom 6 is quickly diffused, and overheating damage of a local pot body of the integrated bottom 6 is avoided.

4. The integrated pot bottom 6 of the inner pot body 1 and the outer pot body 2 fixedly supported by the bracket 4 has low pressure resistance and high pressure resistance, the integrated pot bottom 6 improves the plane pressure-bearing efficiency of the pot bottom, and the outer pot body 2 and the inner pot body 1 of the integrated pot bottom 6 cannot bulge and deform after being heated.

5. The cavity 5 is an oxygen-free space, which avoids or reduces the phenomenon that the heat conductor 3 and the pan body do not have obvious chemical reaction or physical change.

6. The inside of the cavity 5 is in a negative vacuum state, and when the heat conductor 3 changes solid phase and liquid phase, the liquid heat conductor 3 with the increased volume cannot cause the bulging deformation of the integrated pot bottom 6.

The above embodiments are only used to help understand the manufacturing method and the core concept of the present invention, and the specific implementation is not limited to the above specific embodiments, and those skilled in the art can make changes without creative efforts from the above concepts, which all fall within the protection scope of the present invention.