CN111836413A - Metal heating body and metal heating device - Google Patents
Metal heating body and metal heating device Download PDFInfo
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- CN111836413A CN111836413A CN202010830356.3A CN202010830356A CN111836413A CN 111836413 A CN111836413 A CN 111836413A CN 202010830356 A CN202010830356 A CN 202010830356A CN 111836413 A CN111836413 A CN 111836413A
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- heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 209
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 78
- 239000002184 metal Substances 0.000 title claims abstract description 78
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 96
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000000463 material Substances 0.000 claims abstract description 76
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005485 electric heating Methods 0.000 claims abstract description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010408 film Substances 0.000 claims description 43
- 229910044991 metal oxide Inorganic materials 0.000 claims description 35
- 239000000758 substrate Substances 0.000 claims description 35
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 230000004927 fusion Effects 0.000 claims description 13
- 150000004706 metal oxides Chemical class 0.000 claims description 12
- 239000010409 thin film Substances 0.000 claims description 11
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 239000013500 performance material Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000007743 anodising Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 5
- 239000002086 nanomaterial Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- -1 ZnO metal oxide Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
Landscapes
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a metal heating body and a metal heating device, which comprise an aluminum base material and an electric heating layer, wherein the electric heating layer is fixed with the aluminum base material and comprises an aluminum oxide film region and a heating region in the direction away from the aluminum base material, the heating region and the aluminum base material are isolated by the aluminum oxide film region, the aluminum oxide film region and the heating region are of an integral structure, the metal heating body is also provided with two electrode layers, one part of the aluminum oxide film region is positioned between the electrode layers and the aluminum base material, at least one part of one electrode layer is electrically connected with one end of the heating region, and at least one part of the other electrode layer is electrically connected with the other end of the heating region. The electric heating layer of the metal heating body is provided with a heating area and an alumina film area, and has stable structure, so that the metal heating body is not easy to fall off and crack under high and low temperature impact and has stable performance.
Description
Technical Field
The invention relates to the field of electric heating, in particular to a metal heating body and a metal heating device.
Background
Common electric heating products adopt a resistance wire heating mode or a film heating mode. The heating component using resistance wire as heating mode is sealed and filled in the aluminium tube by magnesium powder, etc., and the fluid is heated by heating tube. The heating component adopting the film heating mode is characterized in that a metal resistance film is printed on the heating component, an insulating layer needs to be printed before the metal resistance film is printed, the metal resistance film needs to be printed and sintered for multiple times, and a multi-layer printing structure is easy to crack and peel after multiple times of cold and heat impact.
Disclosure of Invention
The invention aims to provide a metal heating body and a metal heating device which are resistant to high and low temperature impact and have a stable structure.
In order to realize the purpose, the following technical scheme is adopted: a metal heating body comprises an aluminum base material and an electric heating layer, wherein the electric heating layer is fixed with the aluminum base material and is far away from the aluminum base material, the electric heating layer comprises an aluminum oxide film region and a heating region, the heating region and the aluminum base material are isolated by the aluminum oxide film region, the aluminum oxide film region and the heating region are of an integrated structure, the metal heating body is further provided with two electrode layers, one part of the aluminum oxide film region is located between the electrode layers and the aluminum base material, at least one part of one electrode layer is electrically connected with one end of the heating region, and at least one part of the other electrode layer is electrically connected with the other end of the heating region.
The material of the aluminum oxide film area is different from that of the heating area, the aluminum oxide film area comprises a fusion area, and the same material as that of the heating area is fused in the fusion area.
The aluminum base material comprises an aluminum pipe or an aluminum plate, and the thickness of the aluminum base material is 0.05-5 mm; the continuous and uninterrupted surface of the electric heating layer covers the aluminum base material, and the continuous and uninterrupted surface of the heating zone covers the aluminum base material.
The resistance coefficient of the heating area of the metal heating body is 85-115%, and the resistance coefficient refers to the ratio of the working resistance to the normal temperature resistance.
The aluminum substrate is an aluminum pipe, the diameter of the aluminum pipe is 6-80mm, the heating power of the aluminum pipe is 10-3000W, and the power density of a heating area of the aluminum pipe is 1-100W/cm2。
The thickness of the fusion zone is in the range of 0.1-10 μm, the thickness of the heating zone is in the range of 1-20 μm, and the thickness of the alumina film zone is in the range of 3-40 μm.
The heating zone comprises ZO metal oxide nano heating material and In2O3Metallic oxide nano heating material, ZnO metallic oxide nano heating material, and LiO metallic oxide nano heating materialRice heating material, SnO2Metal oxide nano heating material, Ca2InO4At least one of a metal oxide nano heating material, a graphene nano heating material and a nano silver heating material. The electric heating layer is covered by the electric insulating layer;
the metal heating body further comprises a sintered coating, the sintered coating is made of negative temperature coefficient resistance performance materials, the sintered coating is located on the electric insulation layer, and the sintered coating of the negative temperature coefficient resistance performance materials is an NTC performance sintered coating.
The aluminum oxide thin film layer is formed by anodizing an aluminum base material.
In order to realize the purpose, the following technical scheme is adopted: the metal heating device comprises a fixing frame and the metal heating body according to the technical scheme, wherein the metal heating body is an aluminum pipe, the metal heating body is fixed on the fixing frame, the metal heating device is provided with an inlet and an outlet, and the inlet and the outlet are communicated with the inner cavity of the aluminum pipe.
The metal heating body comprises an aluminum base material and an electric heating layer, the electric heating layer is fixed with the aluminum base material, the electric heating layer is provided with a heating area and an aluminum oxide film area, and the aluminum oxide film area and the heating area are of an integrated structure and are stable in structure, so that the metal heating body can be impacted at high and low temperatures, is not easy to fall off and crack, and is stable in performance.
Drawings
Fig. 1 is a schematic structural view of one embodiment of the metal heating body of the present invention;
fig. 2 is a schematic cross-sectional view of one embodiment of the metal heating body of the present invention;
fig. 3 is a schematic sectional view of another embodiment of the metal heating body of the present invention;
fig. 4 is a schematic sectional view of yet another embodiment of the metal heating body of the present invention;
FIG. 5 is a schematic structural diagram of a conventional film heating tube;
FIG. 6 is a schematic diagram of a prior art film heater chip;
FIG. 7 is a schematic view of a metal heating apparatus according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1-4, fig. 1 illustrates a schematic structural diagram of a metal heating body, the metal heating body includes an aluminum substrate 1 and an electric heating layer 2, the electric heating layer 2 is fixed to the aluminum substrate 1, and the fixing of the two layers means that the electric heating layer does not fall off after being attached to the aluminum substrate 1 and maintains the two layers as an integral structure.
In the direction away from the aluminum substrate, the electric heating layer 2 has an aluminum oxide film region 21 and a heating region 23, the aluminum oxide film region 21 and the heating region 23 are integrated, the aluminum oxide film region 21 isolates the heating region 23 from the aluminum substrate 1, and the integrated structure of the aluminum oxide film region 21 and the heating region 23 refers to the structure that the aluminum oxide film region 21 and the heating region 23 are in the same layer. The direction away from the aluminum substrate means a direction radiating outward from the aluminum substrate.
Herein, the aluminum substrate includes aluminum, aluminum alloy, and the like.
The metal heater further has two electrode layers 3, and a part of the alumina thin film region 21 is located between the electrode layers 3 and the aluminum substrate 1, wherein at least a part of one electrode layer 3 is electrically connected to one end of the heating zone 23, and at least a part of the other electrode layer 3 is electrically connected to the other end of the heating zone. Of course, when the metal heating body is made of a metal plate or a metal sheet, and the heating region 23 is in a circular, square or other irregular structure, one end of the heating region represents one part of the circular, square or other irregular structure, and the other end of the heating region represents another part of the circular, square or other irregular structure, that is, one end and the other end herein are more likely to be ends when current flows, and the number of the electrode layers 3 may also be 3 or more.
The alumina membrane 21 is of a different material from the heating zone 23, and the alumina membrane 21 includes a fused zone 22, in which the fused zone 22 is fused with the same material as the heating zone 23.
The aluminum oxide film area 21 is formed by subjecting an aluminum substrate to anodic oxidation treatment to form an aluminum oxide film on the surface of the aluminum substrate, the aluminum oxide film is dense and continuous, and then the nano material is covered on the aluminum oxide film by vacuum evaporation or vapor deposition or ion sputtering or plasma plating, so as to form the electric heating layer 2, and the electric heating layer includes the aluminum oxide film area 21 and the heating area. The aluminum oxide film area 21 covers the aluminum substrate with a one-piece continuous surface, and because of the high hardness of aluminum oxide, the aluminum oxide film area 21 plays an electric insulation role among the aluminum substrate, the fusion area and the heating area in the metal heating body structure, so that the power utilization safety of the metal heating body is ensured.
The alumina thin film area 21 is provided with the fusion area 22, and as the nanometer material in the fusion area 22 is fused with alumina, the alumina thin film area 21 and the heating area 23 form a compact structure with stable structure, so that the alumina thin film area can not easily fall off and crack under high and low temperature impact, and has stable performance.
The aluminum substrate 1 can be an aluminum pipe, an aluminum plate, an aluminum sheet or the like, and the thickness of the aluminum substrate 1 is 0.05-5 mm; the heating zone 23 covers the aluminum substrate 1 with a one-piece continuous uninterrupted face. Herein, one-piece means that the heating regions 23 are not divided and are in a one-piece form. Since the heating area 23 covers the aluminum substrate 1 in one piece, when the metal heater is powered on, the entire heating area 23 is rapidly heated, so that the aluminum substrate 1 covered by the entire heating area 23 has almost the same temperature, on one hand, the aluminum substrate 1 can uniformly heat the fluid to be heated, and on the other hand, the uniformly heated heating area 23 has relatively uniform stress on the aluminum substrate 1, which is helpful for crack resistance and deformation prevention of the aluminum substrate 1.
Specifically, when the aluminum substrate 1 is an aluminum tube, the heating zone 23 may continuously and uninterruptedly cover the periphery of the aluminum tube, the heating zone 23 is located in the middle region of the aluminum tube, and the covering region of the heating zone 23 occupies 60 to 90% of the surface area of the aluminum tube. When the heating zone 23 is positioned on the inner surface of the aluminum tube, the coating area of the heating zone 23 accounts for 60-90% of the inner surface area of the aluminum tube, and when the electric heating layer 2 is positioned on the outer surface of the aluminum tube, the coating area of the heating zone 23 accounts for 60-90% of the outer surface area of the aluminum tube.
When the aluminum substrate 1 is an aluminum plate or an aluminum sheet, the heating area 23 can continuously cover the aluminum plate or the aluminum sheet, the electrothermal layer 2 is positioned in the middle area of the aluminum plate or the aluminum sheet, and the covering area of the heating area 23 accounts for 60-90% of the surface area of the aluminum plate or the aluminum sheet.
The resistance coefficient of the heating area of the metal heating body is 85-115%, wherein the resistance coefficient refers to the ratio of the working resistance to the normal temperature resistance. For example, when the metal heater is not operated, the resistance is R1, and when the metal heater is heated by energization, the operating resistance is R2, and the resistivity is R2/R1, and the resistivity of the metal heater is close to 1, so that the heating efficiency of the metal heater during heating can be high, and the temperature control of the metal heater can be facilitated since the resistance change of the metal heater during operation and at room temperature is not large.
The power density of the metal heating body can be 1-150w/cm2Within this range, watt density refers to the ratio of power to the area of the heated zone. The power density range is wide, and the method is suitable for more products. When the aluminum substrate 1 is an aluminum tube, the diameter of the aluminum tube is 6-80mm, the heating power of the aluminum tube can be 10-3000W, and the power density of the heating zone of the aluminum tube is 1-100W/cm2. The power density is higher for can realize the high power under the less condition of zone of heating area, can realize under the higher power satisfies the required condition of using, very little that metal heating body overall structure can be done, the structure is small and exquisite. Since the metal heater has an aluminum substrate on which an electrothermal layer having an alumina thin film region and a heating region is fixed, the power density of the heating region can be very small, for example, 1 to 10w/cm2In this case, the driving may be performed by a battery or the like.
The thickness of the fusion zone 22 of the metal heating body is in the range of 0.1-10 μm, the thickness of the heating zone 23 is in the range of 1-20 μm, and the thickness of the alumina thin film zone 21 is in the range of 3-40 μm. Although the thickness of the heating zone 23 is in the range of 1-20 μm and the thickness is very small, the alumina membrane 21 has a fusion zone 22, and the thickness of the fusion zone 22 is in the range of 0.1-10 μm, so that the connection between the heating zone 23 and the alumina membrane 21 is strongly ensured, and the heating zone has a stable structure and is not easy to fall off or break. In addition, because the aluminum oxide film area 21 is formed by anodizing the aluminum substrate, the thickness can be very small, and meanwhile, because of the existence of the fusion area 22, the nano material in the fusion area 22 is fused with the aluminum oxide, so that the metal thermal conductivity of the aluminum oxide film area is improved, further, the thickness of the aluminum oxide film area 21 is smaller and is within the range of 3-40 μm, and thus, the thickness of the electric heating layer 2 is very thin, which is also beneficial to the uniformity of the electric heating layer 2.
Specifically, as an embodiment, the heating zone 23 comprises SnO2The metal oxide nanomaterial, alumina film region 21, comprises a non-metallic sinter-curable glass body or organic coating material.
As another embodiment, the heating region 23 comprises graphene nanomaterials, and the alumina membrane region 21 comprises a non-metallic sinter-curable vitreous body or organic coating material.
As other embodiments, the heating zone 23 may include a ZO metal oxide nano heating material, In2O3Metallic oxide nano heating material, ZnO metallic oxide nano heating material, LiO metallic oxide nano heating material, SnO2Metal oxide nano heating material, Ca2InO4At least one of a metal oxide nano heating material, a graphene nano heating material and a nano silver heating material. For example, the heating zone 23 includes a ZO metal oxide nano heating material, In2O3Metallic oxide nano heating material, ZnO metallic oxide nano heating material, LiO metallic oxide nano heating material, SnO2Metal oxide nano heating material, Ca2InO4More than two of the metal oxide nanometer heating material, the graphene nanometer heating material and the nanometer silver heating material enable the electrical conductivity of the heating area to be stronger. For example, ZO metal oxide nano heating material and Ca2InO4Metal oxide nano-heating material, ZnO metal oxide nano-heating material and In2O3Metal oxide nano-heating material, ZO metal oxide nano-heating material and LiO metal oxide nano-heating material, SnO2Metal oxide nano heating material, Ca2InO4Metallic oxide nano heating material and nano silver heating material, SnO2Metal oxide nano heating material, Ca2InO4Metal oxide nano heating material and grapheneNano heating materials, etc.
The electrode layer 3 of the electric heating layer 2 is fixed on the electric heating layer by screen printing and sintering silver paste, and the sintering temperature is 120-500 ℃. Referring to fig. 3, the electrode layer 3 may partially cover the heating region 23, so that the electrode layer 3 is preferably electrically connected to the heating region 23. Referring to fig. 2, the electrode layer 3 may be closely attached to the heating region 23, and power may be supplied to the heating region 23 through the electrode layer 3. The distance between the electrode layer 3 and the metal conductive part is far away from the distance between the aluminum oxide film area 21 and the metal conductive part, so that the electrical safety distance is ensured.
Referring to fig. 4, the metal heating body may further include an electrical insulating layer 4, the electrical insulating layer 4 covering the electrode layer 3 and the heating region 23. The electrically insulating layer 4 is formed by fixing an insulating material to the heating region 23 by screen printing sintering.
The metal heating body further comprises a sintered coating 5, the sintered coating 5 is made of a negative temperature coefficient resistance performance material, the sintered coating 5 is located on the electric insulation layer 4, and the sintered coating 5 made of the negative temperature coefficient resistance performance material is the sintered coating 5 with NTC performance.
In contrast, fig. 5 and 6 are structural views of a conventional thick film type heating film, and the heating means illustrated in fig. 5 and 6 includes a substrate 1 ', a heating film 2', and electrodes 3 ', and the heating films 2' in fig. 5 and 6 are spaced apart from each other. The heating temperature is high in the region where the metal film is provided, and is low in the region where the metal film is not provided, so that the substrate is easily broken, and the uniformity of fluid heating is also poor.
Referring to fig. 7, fig. 7 is a schematic structural view of a metal heating apparatus. The metal heating device comprises a metal heating body 10 and a fixing frame 13, wherein the metal heating body 10 is an aluminum pipe, the metal heating body 10 is fixed on the fixing frame 13, the metal heating device is provided with an inlet 11 and an outlet 12, and the inlet 11 and the outlet 12 are communicated with the inner cavity of the aluminum pipe. The metal heating device can be applied to heating places with various instant heating requirements.
It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.
Claims (10)
1. The metal heating body is characterized by comprising an aluminum base material and an electric heating layer, wherein the electric heating layer is fixed with the aluminum base material and is far away from the aluminum base material, the electric heating layer comprises an aluminum oxide film region and a heating region, the heating region and the aluminum base material are isolated by the aluminum oxide film region, the aluminum oxide film region and the heating region are of an integrated structure, the metal heating body is further provided with two electrode layers, one part of the aluminum oxide film region is located between the electrode layers and the aluminum base material, at least one part of one electrode layer is electrically connected with one end of the heating region, and at least one part of the other electrode layer is electrically connected with the other end of the heating region.
2. The metallic heating body according to claim 1, wherein the alumina thin film region is different from the material of the heating zone, and the alumina thin film region includes a fusion zone in which the same material as the material of the heating zone is fused.
3. Metal heating body according to claim 1 or 2, characterized in that said aluminium substrate comprises an aluminium tube or plate, said aluminium substrate having a thickness comprised between 0.05 and 5 mm; the electric heating layer covers the aluminum substrate with a continuous surface, and the heating zone covers the aluminum substrate with a continuous surface.
4. The metallic heater according to claim 1 or 2, characterized in that the heating zone of the metallic heater has a resistivity ranging from 85% to 115%, said resistivity being the ratio of the working resistance to the resistance at room temperature.
5. The metal heater as claimed in claim 1 or 2, wherein the aluminum substrate is an aluminum pipe having a pipe diameter of 6 to 80mm, the heating power of the aluminum pipe is 10 to 5000W, and the power density of the heating zone of the aluminum pipe is 1 to 100W/cm2。
6. The metallic heating body according to claim 2, wherein the fusion zone thickness is in the range of 0.1-10 μm, the heating zone thickness is in the range of 1-20 μm, and the alumina thin film region thickness is in the range of 3-40 μm.
7. The metal heating body according to claim 1, 2 or 6, wherein the heating zone comprises a ZO metal oxide nano heating material, In2O3Metallic oxide nano heating material, ZnO metallic oxide nano heating material, LiO metallic oxide nano heating material, SnO2Metal oxide nano heating material, Ca2InO4At least one of a metal oxide nano heating material, a graphene nano heating material and a nano silver heating material.
8. The metallic heating body according to claim 1, 2 or 6, further comprising an electrically insulating layer covering the electrothermal layer;
the metal heating body further comprises a sintered coating, the sintered coating is made of negative temperature coefficient resistance performance materials, the sintered coating is located on the electric insulation layer, and the sintered coating of the negative temperature coefficient resistance performance materials is an NTC performance sintered coating.
9. The metal heating body according to claim 1, 2 or 6, wherein the aluminum oxide thin film layer is formed by anodizing an aluminum substrate.
10. A metal heating device, comprising a fixing frame and the metal heating body according to any one of claims 1 to 9, wherein the metal heating body is an aluminum tube, the metal heating body is fixed on the fixing frame, the metal heating device is provided with an inlet and an outlet, and the inlet and the outlet are communicated with the inner cavity of the aluminum tube.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010830356.3A CN111836413A (en) | 2020-08-18 | 2020-08-18 | Metal heating body and metal heating device |
| CN202180050338.6A CN116195365A (en) | 2020-08-18 | 2021-08-18 | Metal heating body, metal heating device and manufacturing method of metal heating body |
| US18/021,122 US20230328846A1 (en) | 2020-08-18 | 2021-08-18 | Metal heating body, metal heating device, and metal heating body manufacturing method |
| EP21857697.3A EP4181625A1 (en) | 2020-08-18 | 2021-08-18 | Metal heating body, metal heating device, and metal heating body manufacturing method |
| PCT/CN2021/113228 WO2022037605A1 (en) | 2020-08-18 | 2021-08-18 | Metal heating body, metal heating device, and metal heating body manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010830356.3A CN111836413A (en) | 2020-08-18 | 2020-08-18 | Metal heating body and metal heating device |
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| CN111836413A true CN111836413A (en) | 2020-10-27 |
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| CN202010830356.3A Pending CN111836413A (en) | 2020-08-18 | 2020-08-18 | Metal heating body and metal heating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022037605A1 (en) * | 2020-08-18 | 2022-02-24 | 芜湖艾尔达科技有限责任公司 | Metal heating body, metal heating device, and metal heating body manufacturing method |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022037605A1 (en) * | 2020-08-18 | 2022-02-24 | 芜湖艾尔达科技有限责任公司 | Metal heating body, metal heating device, and metal heating body manufacturing method |
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