CN108113455B - Uniform temperature pot with heating coil panel - Google Patents
Uniform temperature pot with heating coil panel Download PDFInfo
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- CN108113455B CN108113455B CN201611086826.XA CN201611086826A CN108113455B CN 108113455 B CN108113455 B CN 108113455B CN 201611086826 A CN201611086826 A CN 201611086826A CN 108113455 B CN108113455 B CN 108113455B
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- pot
- heating coil
- porous foam
- coil panel
- temperature
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/004—Cooking-vessels with integral electrical heating means
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Cookers (AREA)
Abstract
The invention relates to a temperature equalizing pot with a heating coil panel, which comprises an inner pot and an outer pot, wherein a vacuum cavity is formed between the inner pot and the outer pot; the bottom of the vacuum cavity is filled with a liquid phase change working medium; a liquid suction core is arranged in the vacuum cavity; the heating coil disc is positioned on the outer surface of the outer pot, and the lowest end of the liquid suction core is higher than the highest position of the heating coil disc. The bottom of the outer pot can always keep higher temperature under the heating action of the coil disc, so that the temperature of the bottom of the vacuum cavity is always higher, the temperature is basically higher than the phase change temperature of the liquid working medium in the vacuum cavity, the bottom of the liquid suction core is higher than the heated coil disc, and the whole temperature of the pot body at the heating position of the coil disc is higher than the gasification temperature of the liquid phase change working medium, so that the liquid working medium can be gasified rapidly again, and the heat of the liquid working medium is transmitted to the position with relatively lower temperature at the middle and upper parts of the pot body again, so that the heat conduction in the whole pot body can be accelerated, and the long-term good temperature uniformity of the pot body is maintained.
Description
Technical Field
The invention relates to a temperature equalizing pot with a heating coil panel, and belongs to the field of kitchen cooking appliances.
Background
At present, products such as inner containers of electric cookers or pressure cookers are generally made of aluminum alloy, iron, stainless steel or composite boards thereof, and the like, and the non-stick effect of the products in the cooking process is realized mainly by spraying non-stick coatings such as PTFE (Teflon) on the surfaces of inner layers. However, these non-stick coatings have poor wear resistance and are easy to fall off, and after being absorbed by human bodies, hidden danger may be generated to the health of consumers. Therefore, companies such as Dagao electric appliances of Taiwan, shenzhen Tang electric appliances and the like develop healthy non-coating liner pot, and a certain physical non-stick effect is achieved by controlling the uniformity of the temperatures of different positions of the pot body. Because when the temperature distribution uniformity of the inner pot is affected, the bottom of the non-coated pot is heated more intensively, the physical non-stick effect of the bottom of the pot is poor, rice is easy to stick to the bottom of the pot and pasty substances are generated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a temperature equalizing pot with a heating coil panel, and overcomes the defects that the potential safety hazard exists in the non-stick coating and the pot without the coating is easy to stick and stick.
The technical scheme for solving the technical problems is as follows: the utility model provides a samming pot with heating coil dish, includes the same, the different interior pot of volume and outer pot of shape, interior pot cover is established in the outer pot, the top of interior pot with the top seal fixed connection of outer pot, form the vacuum chamber between interior pot and the outer pot; the bottom of the vacuum cavity is filled with a liquid phase-change working medium which can be converted into a gas state from a liquid state when heated; a liquid suction core is arranged in the vacuum cavity; the heating coil panel is positioned on the outer surface of the outer pot, and the lowest end of the liquid suction core is higher than the highest position of the heating coil panel.
In the above technical solution, the vacuum degree of the vacuum chamber is 10 -3 Pa~10 -1 Pa. The phase change temperature of the liquid phase change working medium is reduced, so that the liquid phase change working medium is convenient for circulation vaporization and condensation, the temperature uniformity of the bottom and the upper part of the cooker is further ensured, and the temperature uniformity of all parts of the whole cooker is further ensured.
The beneficial effects of the invention are as follows: the bottom of the outer pot can always keep higher temperature under the heating action of the coil panel, so that the temperature of the bottom of the vacuum cavity is always higher, the temperature is basically higher than the phase change temperature of the liquid working medium in the vacuum cavity, the bottom position of the liquid suction core is higher than the heated coil panel, and the whole temperature of the pot body at the heating position of the coil panel is higher and higher than the gasification temperature of the liquid phase change working medium, so that the liquid working medium can be gasified rapidly again and the heat of the liquid working medium is transmitted to the position of the middle upper part of the pot body relatively lower. The structure shortens the circulation path of the phase change working medium from liquid state to gas state to liquid state, so that the reciprocating circulation can accelerate the heat conduction in the whole pot body, ensure that the inner surface of the inner pot body can reach smaller temperature difference faster, and keep the long-term good temperature uniformity of the pot body.
On the basis of the technical scheme, the invention can be improved as follows.
The invention relates to a temperature equalizing pot with a heating coil plate, which is characterized in that the liquid absorbing core is more than two porous foam metal strips, the porous foam metal strips are matched with the shape of the inner pot or the outer pot, two sides of the porous foam metal strips are connected with the outer side of the inner pot and the inner side of the outer pot, and the vacuum cavity is arranged between the porous foam metal strips. In the above-described aspect, it is preferable that the width of the porous metal foam strips is 5 to 15 mm and the interval between the porous metal foam strips is 3 to 10 mm.
In the above scheme, preferably, the porous foam metal strip may be a porous foam copper strip, a porous foam aluminum strip or a porous foam nickel strip.
The adoption of the method has the further beneficial effects that: the gaseous phase-change working medium is upwards and smoothly transferred to the upper end of the vacuum cavity, namely the condensation end, in the process, heat is effectively transferred to the inner pot, so that the whole pot body is heated, the phase-change working medium is condensed at the condensation end and is converted into liquid again, the liquid is adsorbed in pores in the porous foam metal strips, flows to the bottom of the vacuum cavity along the porous foam metal strips under the action of gravity, and is evaporated after being heated again, and the heating and condensing process is continuously and circularly repeated, thereby ensuring that the temperature field of each part of the whole pot is basically consistent after heating for a plurality of minutes (such as the temperature difference can be controlled to be +/-4 ℃).
The invention relates to a temperature equalizing pot with a heating coil panel, which is characterized in that more than two porous foam metal strips are uniformly arranged along the annular direction of a vacuum cavity, and the length direction of the porous foam metal strips is arranged along the height direction of the vacuum cavity. The structure is favorable for uniform upward transmission of air flow and improves heat conduction uniformity.
The invention relates to a temperature equalizing pot with a heating coil plate, which is characterized in that the liquid absorbing core is a porous foam metal layer, and the porous foam metal layer is arranged on the outer side of the inner pot or the inner side of the outer pot.
The invention relates to a temperature equalizing pot with a heating coil plate, which is characterized in that the average pore diameter of the porous foam metal strip or the porous foam metal layer is 0.1-10 mm, the porosity is 70-80%, and the thickness is 1-5 mm. The width of the vacuum cavity is larger than the thickness of the porous foam metal layer, and the range of the vacuum cavity can be 1.5 mm-6 mm.
The invention relates to a temperature equalizing pot with a heating coil plate, which further has the width range of 1.5 mm-4 mm. In the scheme, the width is the width of a gap formed between the outer wall surface of the inner pot and the inner wall surface of the outer pot.
The temperature equalizing pot with the heating coil panel has the advantages that the distance between the inner pot and the outer pot is 2-3 mm; the thickness of the inner pot and the outer pot is 0.5 mm-1.5 mm.
The invention relates to a temperature equalizing pot with a heating coil plate, which is characterized in that the porous foam metal strip is a porous foam copper strip, a porous foam aluminum strip or a porous foam nickel strip; the porous foam metal layer is a porous foam copper layer, a porous foam aluminum layer or a porous foam nickel layer.
The invention relates to a temperature equalizing pot with a heating coil plate, which is characterized in that a hollow tube communicated with the vacuum cavity is arranged at the upper part of the outer pot.
The invention relates to a temperature equalizing pot with a heating coil plate, further, the lowest end of the liquid suction core is 0.5-8 mm higher than the highest position of the heating coil plate. In the above-mentioned aspect, preferably, the lowest end of the wick is 0.5 to 5mm higher than the highest position of the heating coil panel.
The beneficial effects of adopting the further scheme are as follows: the relative positions of the liquid suction core and the heating coil disc on the outer surface of the pot body are controlled within the range, so that the position of the bottom of the liquid suction core is higher than the highest position of the electromagnetic heating coil disc on the outer surface of the pot body, the circulation path of liquid phase change working medium from liquid state to gas state to liquid state in the heating process is shortened, the conduction rate of heat at the middle upper part of the pot body can be accelerated, the soaking effect (about 40 s) is realized quickly, different positions of the inner pot body have good temperature distribution uniformity in the whole heating process, the temperature difference of each part of the inner pot body can be within +/-4 ℃, and good physical non-sticky effect of food in the pot body is realized in the heating process.
The invention relates to a temperature equalizing pot with a heating coil panel, and further relates to a liquid phase change working medium which is water, ammonia gas or n-hexane. The liquid phase change working medium can also be other liquid phase change working media.
Drawings
FIG. 1 is a schematic view showing a longitudinal sectional structure of a temperature uniformity pot with a heating coil panel according to the present invention;
fig. 2 is a schematic cross-sectional view in the direction of fig. 1 A-A.
In the drawings, the list of components represented by the various numbers is as follows:
1. the inner pot 2, the outer pot 3, the hollow tube 4, the liquid suction core 5, the heating coil disc 6, the porous foam metal strip 7 and the vacuum cavity.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, a temperature equalizing pot with a heating coil disc according to an embodiment of the invention comprises an inner pot 1 and an outer pot 2 which are identical in shape and different in volume, wherein the inner pot 1 is sleeved in the outer pot 2, the top end of the inner pot 1 is fixedly connected with the top end of the outer pot 2 in a sealing manner, and a vacuum cavity 7 is formed between the inner pot 1 and the outer pot 2; the bottom of the vacuum cavity 7 is filled with a liquid phase-change working medium which can be converted into a gas state from a liquid state when heated; a liquid suction core 4 is arranged in the vacuum cavity 7; the heating coil panel 5 is positioned on the outer surface of the outer pot 2, and the lowest end of the liquid suction core 4 is higher than the highest position of the heating coil panel 5. In the above technical solution, the vacuum degree of the vacuum chamber 7 may be 10 -3 Pa～10 -1 Pa. The phase change temperature of the liquid phase change working medium is reduced, so that the liquid phase change working medium is convenient for circulation vaporization and condensation, the temperature uniformity of the bottom and the upper part of the cooker is further ensured, and the temperature uniformity of all parts of the whole cooker is further ensured.
The width of the vacuum chamber 7 is preferably in the range of 1.5mm to 4mm in the above embodiment. The width is the gap width formed between the outer wall surface of the inner pot 1 and the inner wall surface of the outer pot 2.
In the above embodiment, preferably, the distance between the inner pot 1 and the outer pot 2 is 2 mm-3 mm; the thickness of the inner pot 1 and the outer pot 2 is 0.5 mm-1.5 mm.
The temperature equalizing pot with the heating coil disc provided by the embodiment of the invention, specifically, the liquid absorbing cores 4 are more than two porous foam metal strips 6, can be 6 to 20, and have the shape matched with the shapes of the inner pot 1 and the outer pot 2; the porous foam metal strips 6 are matched with the inner pot 1 or the outer pot 2 in shape, two sides of the porous foam metal strips are connected with the outer side of the inner pot 1 and the inner side of the outer pot 2, and the vacuum cavity is arranged between the porous foam metal strips 6. In this solution, the porous foam metal strip 6 may be selected from a porous foam copper strip, a porous foam aluminum strip or a porous foam nickel strip, preferably, the average pore diameter of the porous foam metal strip is 0.1-10 mm, the porosity is 70% -80%, and the thickness is 1-5 mm. The structure of the embodiment realizes that the gaseous phase-change working medium is smoothly transferred upwards along the vacuum cavity between the porous foam metal strips and is transferred to the upper end of the vacuum cavity, namely the condensation end, heat is effectively transferred to the inner pot in the process, so that the whole pot body is heated, the phase-change working medium is condensed at the condensation end and is converted into liquid again, the liquid is adsorbed in the pores in the porous foam metal strips, flows to the bottom of the vacuum cavity along the porous foam metal strips under the action of gravity and is evaporated after being heated again, and the heating and condensing process is continuously and circularly repeated, thereby ensuring that the temperature field of each part of the whole pot is basically consistent after heating for a plurality of minutes (such as the temperature difference can be controlled to be +/-4 ℃).
In the above embodiment of the present invention, preferably, two or more porous foam metal strips are uniformly arranged along the annular direction of the vacuum chamber 7, i.e. are radially distributed along the center of the pot body. The length direction of the porous metal foam strips is arranged along the height direction of the vacuum chamber 7. The structure is favorable for uniform upward transmission of air flow and improves heat conduction uniformity.
In another embodiment of the present invention, the wick 4 is a porous metal foam layer, which is disposed outside the inner pan 1 or inside the outer pan 2, in this embodiment, a porous copper foam layer, a porous aluminum foam layer, or a porous nickel foam layer. Preferably, the average pore diameter of the porous foam metal layer is 0.1-10 mm, the porosity is 70-80%, and the thickness is 1-5 mm. The porous copper foam layer may be a porous copper foam mesh.
In one example of the invention, a hollow pipe communicated with the vacuum cavity is arranged at the upper part of the outer pot. Namely, a connecting port is formed at the position of the outer pot close to the upper part of the outer pot, the hollow pipe 3 which is communicated with the vacuum cavity in a sealing way is arranged at the connecting port, the hollow pipe 3 is used for injecting the liquid phase change working medium to the bottom of the vacuum cavity 7, and air in the vacuum cavity 7 is discharged through the hollow pipe 3; the hollow tube 3 may be a metal hollow tube or a hollow tube made of other materials which are resistant to high temperatures.
In some embodiments, the lowest end of the wick 4 is 0.5-8 mm higher than the highest position of the heating coil panel 5; in the above-mentioned aspect, preferably, the lowest end of the wick 4 is higher than the highest position of the heating coil panel by 0.5 to 5mm. According to the scheme, the relative positions of the liquid suction core 4 and the heating coil panel 5 of the outer surface of the pot body are controlled within the range, so that the position of the bottom of the liquid suction core 4 is higher than the highest position of the heating coil panel 5 of the outer surface of the pot body, the circulation path of liquid phase change working medium from liquid state to gas state to liquid state in the heating process is shortened, the conduction rate of heat at the middle upper part of the pot body can be accelerated, the soaking effect (within about 40 seconds) is realized quickly, different positions of the pot body of the inner layer have good temperature distribution uniformity in the whole heating process, and the temperature difference of each part of the pot of the inner layer can be within +/-4 ℃, so that good physical non-sticky effect of food in the pot can be realized in the heating process.
In the above embodiment of the present invention, the liquid phase-change working medium is water, ammonia gas or n-hexane. The liquid phase change working medium can also be other liquid phase change working media.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The temperature equalizing pot with the heating coil disc is characterized by comprising an inner pot and an outer pot which are identical in shape and different in volume, wherein the inner pot is sleeved in the outer pot, the top end of the inner pot and the top end of the outer pot are outwards extended to form a flanging, the two flanging are fixedly connected in a sealing manner, and a vacuum cavity is formed between the inner pot and the outer pot; the bottom of the vacuum cavity is filled with a liquid phase-change working medium which can be converted into a gas state from a liquid state when heated; a liquid suction core is arranged in the vacuum cavity; the heating coil disc is positioned on the outer surface of the outer pot, and the lowest end of the liquid suction core is higher than the highest position of the heating coil disc; the lowest end of the liquid suction core is 0.5-8 mm higher than the highest position of the heating coil panel.
2. The temperature equalizing pot with the heating coil panel according to claim 1, wherein the liquid absorbing core is more than two porous foam metal strips, the porous foam metal strips are matched with the shapes of the inner pot and the outer pot, two sides of the porous foam metal strips are connected with the outer side of the inner pot and the inner side of the outer pot, and the vacuum cavity is arranged between the porous foam metal strips.
3. The samming pot with a heating coil panel according to claim 2, wherein two or more porous metal foam strips are uniformly arranged along the annular direction of the vacuum chamber, and the length direction of the porous metal foam strips is arranged along the height direction of the vacuum chamber.
4. The samming pot with a heating coil panel according to claim 1, wherein the wick is a porous metal foam layer disposed on the outside of the inner pot or on the inside of the outer pot.
5. The temperature equalizing pot with heating coil panel according to any one of claims 2 to 4, wherein the average pore diameter of the porous foam metal strip or the porous foam metal layer is 0.2 to 10mm, the porosity is 70 to 80%, and the thickness is 1 to 5mm.
6. A temperature equalizing kettle with a heating coil panel according to any one of claims 1 to 4, wherein the vacuum chamber has a width in the range of 1.5mm to 4mm.
7. The temperature equalizing kettle with a heating coil panel according to any one of claims 1 to 4, wherein the distance between the inner kettle and the outer kettle is 2 mm-3 mm; the thickness of the inner pot and the outer pot is 0.5 mm-1.5 mm.
8. The samming pot with a heating coil panel according to any one of claims 2-4, wherein the porous foam metal strip is a porous foam copper strip, a porous foam aluminum strip or a porous foam nickel strip; the porous foam metal layer is a porous foam copper layer, a porous foam aluminum layer or a porous foam nickel layer.
9. The samming pot with a heating coil panel according to any one of claims 1 to 4, wherein a hollow tube communicating with the vacuum chamber is provided at an upper portion of the outer pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086826.XA CN108113455B (en) | 2016-11-30 | 2016-11-30 | Uniform temperature pot with heating coil panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611086826.XA CN108113455B (en) | 2016-11-30 | 2016-11-30 | Uniform temperature pot with heating coil panel |
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| Publication Number | Publication Date |
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| CN108113455A CN108113455A (en) | 2018-06-05 |
| CN108113455B true CN108113455B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611086826.XA Active CN108113455B (en) | 2016-11-30 | 2016-11-30 | Uniform temperature pot with heating coil panel |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110973445A (en) * | 2019-12-05 | 2020-04-10 | 广州大学 | Quick thawing apparatus of phase transition |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB530061A (en) * | 1938-11-21 | 1940-12-04 | Nils Erland Af Kleen | Improvements in or relating to refrigerating apparatus |
| CH582858A5 (en) * | 1975-02-19 | 1976-12-15 | Doebeli Otto | Multi-fuel central heating boiler - has vertical ring of smoke tubes between double walls with cleaning holes above |
| CN105078212A (en) * | 2015-09-10 | 2015-11-25 | 北京无极合一新能源科技有限公司 | Uniform-temperature pot body and manufacturing method thereof |
| CN105795888A (en) * | 2016-05-20 | 2016-07-27 | 佛山市顺德区美的电热电器制造有限公司 | Cookware and manufacturing method of cookware |
| CN206612538U (en) * | 2016-11-30 | 2017-11-07 | 佛山市顺德区美的电热电器制造有限公司 | A kind of samming pot with heater coil disc |
-
2016
- 2016-11-30 CN CN201611086826.XA patent/CN108113455B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB530061A (en) * | 1938-11-21 | 1940-12-04 | Nils Erland Af Kleen | Improvements in or relating to refrigerating apparatus |
| CH582858A5 (en) * | 1975-02-19 | 1976-12-15 | Doebeli Otto | Multi-fuel central heating boiler - has vertical ring of smoke tubes between double walls with cleaning holes above |
| CN105078212A (en) * | 2015-09-10 | 2015-11-25 | 北京无极合一新能源科技有限公司 | Uniform-temperature pot body and manufacturing method thereof |
| CN105795888A (en) * | 2016-05-20 | 2016-07-27 | 佛山市顺德区美的电热电器制造有限公司 | Cookware and manufacturing method of cookware |
| CN206612538U (en) * | 2016-11-30 | 2017-11-07 | 佛山市顺德区美的电热电器制造有限公司 | A kind of samming pot with heater coil disc |
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| CN108113455A (en) | 2018-06-05 |
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