CN111207440A - Electric heater - Google Patents
Electric heater Download PDFInfo
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- CN111207440A CN111207440A CN201811395480.0A CN201811395480A CN111207440A CN 111207440 A CN111207440 A CN 111207440A CN 201811395480 A CN201811395480 A CN 201811395480A CN 111207440 A CN111207440 A CN 111207440A
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- Prior art keywords
- silicon carbide
- heating
- electric heater
- carbide ceramic
- boiler
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- 238000010438 heat treatment Methods 0.000 claims abstract description 140
- 239000000919 ceramic Substances 0.000 claims abstract description 78
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011889 copper foil Substances 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims description 10
- 229910010293 ceramic material Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 17
- 229910052796 boron Inorganic materials 0.000 description 17
- 150000001875 compounds Chemical class 0.000 description 17
- 239000002131 composite material Substances 0.000 description 13
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910021538 borax Inorganic materials 0.000 description 8
- 235000010339 sodium tetraborate Nutrition 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 description 6
- 229920002125 Sokalan® Polymers 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000004584 polyacrylic acid Substances 0.000 description 6
- 229920003257 polycarbosilane Polymers 0.000 description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- 229910052810 boron oxide Inorganic materials 0.000 description 5
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000004328 sodium tetraborate Substances 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 229910052580 B4C Inorganic materials 0.000 description 3
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WUUHFRRPHJEEKV-UHFFFAOYSA-N tripotassium borate Chemical compound [K+].[K+].[K+].[O-]B([O-])[O-] WUUHFRRPHJEEKV-UHFFFAOYSA-N 0.000 description 3
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 3
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 125000005619 boric acid group Chemical group 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
Abstract
The invention discloses an electric heater, which comprises a boiler, a radiator, a circulating pump and pipelines, wherein the boiler, the radiator and the circulating pump are sequentially connected, the pipelines are connected with all parts, and a water replenishing tank is connected between the radiator and the circulating pump; the boiler comprises a PTC heating body, the PTC heating body comprises a plurality of silicon carbide ceramic heating pipes, and copper foils are coated on the peripheries of the silicon carbide ceramic heating pipes. The electric heater has the characteristics of energy conservation, environmental protection, corrosion resistance, long service life, water saving, balanced heating, rapid heat conduction, high efficiency, freezing prevention, safety and the like. The boiler of the electric heater can not only provide hot water for the radiator, but also provide hot water for showering and kitchens.
Description
Technical Field
The invention belongs to the technical field of environment-friendly and energy-saving equipment, and particularly relates to an electric heater.
Background
The heaters in the current market are mainly divided into three categories: gas heating stove and electric heater (hot air heating,
Oil-filled heating) and boiler heating. The gas heating stove can hot water, heating dual-purpose, but its installation engineering is complicated (need at the indoor installation heating pipeline, installation radiator), and the installation cost is higher relatively, and later stage maintenance is also very inconvenient. The electric warmer is limited by the electric load, has limited power and low calorific value, cannot meet the warming requirement in cold, and has high power consumption and high running cost. The boiler heating occupies a large land area, and the small boiler has low heat efficiency, and the coal burning causes environmental pollution. With the increasing environmental governance of China, various boilers burning fuels have been removed, and heating devices using other energy sources have been developed. Due to the limitation of the heating equipment, the heating of the stove is still adopted in winter in less developed areas in Yangtze river basin and the north, so that the heating is not safe and sanitary. In order to protect the environment and implement the policy of replacing coal by electricity, the invention provides the heating equipment adopting semiconductor ceramic heating, overcomes the defects of the heating equipment in the current market, and has the characteristics of simple structure, safety, reliability, convenient control, high thermal efficiency, low use cost, convenient installation and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the electric heater which is simple in structure, high in combustion efficiency, safe and environment-friendly.
The technical scheme of the invention is as follows: an electric heater comprises a boiler, a radiator, a circulating pump and pipelines for connecting all parts, wherein the boiler, the radiator and the circulating pump are sequentially connected; the boiler comprises a PTC (semiconductor ceramic material) heating body, wherein the PTC heating body comprises a metal substrate, a rare earth thick film dielectric layer and a rare earth thick film circuit, wherein the rare earth thick film dielectric layer and the rare earth thick film circuit are positioned on the metal substrate.
Further, the boiler is provided with a circular hollow cavity and is provided with a current limiter.
Furthermore, a circuitous water channel is arranged in the boiler and is provided with a water outlet and a water inlet.
Furthermore, the boiler is provided with an LCD display, has remote control and manual operation modes, can be used for remote control of a mobile phone, and has the functions of power failure parameter protection, sensor fault prompt, system fault prompt alarm, manual forced operation and the like.
Furthermore, the radiator comprises a plurality of radiators which are connected in parallel, the radiator is provided with a safety valve, and the inner diameter of the radiator is 20-50 mm.
Further, the number of the silicon carbide ceramic heating pipes is 3-8.
Further, the thickness of the copper foil is 30-40 um.
Further, the electric heater is provided with a current limiter. The current limiter is connected to the circuit of the PTC heater.
Further, the preparation method of the silicon carbide ceramic heating tube comprises the following steps:
1) weighing the required components according to the amount, stirring and ball-milling to form pug;
2) extruding and molding the pug, and drying to obtain a silicon carbide ceramic heating tube blank;
3) and charging the silicon carbide ceramic heating tube blank into a furnace for sintering.
The sintering process comprises the steps of charging the silicon carbide ceramic heating tube blank, and heating the silicon carbide ceramic heating tube blank from room temperature to 100-200 ℃ at a speed of less than 3 ℃/min; heating to 500-700 ℃ at a speed of less than 2.5 ℃/min, and preserving heat for 1-5 h; heating to 850-1000 ℃ at the speed of less than 2 ℃/min, and keeping the temperature for 1-5 h; heating to 1100-1300 ℃ at the speed of less than 3 ℃/min, stopping heating, keeping the temperature for 1-3 h, and cooling to room temperature along with the furnace to prepare the required silicon carbide honeycomb ceramic material.
Further, the initial components of the silicon carbide ceramic heating tube comprise:
100 parts of silicon carbide with average grain diameter of 0.1-1 mu m
40-60 parts of polycarbosilane dissolved in tetrahydrofuran liquid
15-25 parts of polyvinyl alcohol, which is dissolved in water
5-10 parts of polyacrylic acid
4-50 parts of ceramic composite material
The ceramic composite material powder comprises 1-15 parts of titanium oxide, 1-20 parts of boron-containing compound and 1-15 parts of metal aluminum powder. The boron-containing compound is one or more of borax, sodium borate, boron carbide, titanium boride, boric acid, potassium borate and boron oxide.
The invention has the beneficial effects that: the electric heater has the characteristics of energy conservation, environmental protection, corrosion resistance, long service life, water saving, balanced heating, rapid heat conduction, high efficiency, freezing prevention, safety and the like. The boiler of the electric heater can not only provide hot water for the radiator, but also provide hot water for showering and kitchens.
The water-saving and energy-saving water heater has the advantages that the heat efficiency is improved by more than 30% compared with the traditional water heater, the water heater can heat in 3 minutes, the heating effect can be achieved in 10 minutes, the heat transfer speed is more than several times of that of water heating, the heat supply energy consumption is greatly reduced, the heating cost and the heating cost are reduced, the water is saved by 90%, and the comprehensive energy saving rate is more than 50%.
The PTC heating body is heated at constant temperature, does not scale, and has high heat conduction speed and high heat conduction efficiency.
By adopting the water-electricity separation technology, the water-electricity separation device has the protection functions of multiple isolation, electric leakage prevention, dry burning prevention, over-temperature prevention, low-temperature freeze prevention and the like, and is long in service life and corrosion resistant. The LCD has remote control and manual operation modes, can be used for remote control of the mobile phone, and has the functions of power-off parameter protection, sensor fault prompt, system fault prompt alarm, manual forced operation and the like.
The radiator can be arranged on the wall, and the occupied room space is small.
Drawings
Fig. 1 is a schematic structural diagram of the electric heater of the present invention.
Detailed Description
For a further understanding of the contents, features and effects of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
Referring to fig. 1, an electric heater includes a boiler, a radiator, a circulation pump, and pipelines connecting the components, wherein a water replenishing tank is connected between the radiator and the circulation pump; the boiler comprises a PTC heating body, the PTC heating body comprises a plurality of silicon carbide ceramic heating pipes, and copper foils are coated on the peripheries of the silicon carbide ceramic heating pipes.
Further, the boiler is provided with a circular hollow cavity and is provided with a current limiter. The current limiter is connected to the circuit of the PTC heating body, and can limit current and prevent super-strong current from passing through the silicon carbide ceramic heating pipe, so that the heating pipe is prevented from being burnt out and the service life of the heating pipe is prevented from being influenced.
Furthermore, a circuitous water channel is arranged in the boiler and is provided with a water outlet and a water inlet.
Furthermore, the boiler is provided with an LCD display, has remote control and manual operation modes, can be used for remote control of a mobile phone, and has the functions of power failure parameter protection, sensor fault prompt, system fault prompt alarm, manual forced operation and the like.
Furthermore, the radiator comprises a plurality of radiators which are connected in parallel, the radiator is provided with a safety valve, and the inner diameter of the radiator is 20-50 mm.
Further, the number of the silicon carbide ceramic heating pipes is 3-8.
Further, the thickness of the copper foil is 30-40 um.
Further, the electric heater is provided with a current limiter. The current limiter is connected to the circuit of the PTC heater.
The silicon carbide ceramic heating pipe is prepared by the following steps:
1) weighing the required components according to the amount, stirring and ball-milling to form pug;
2) extruding and molding the pug, and drying to obtain a silicon carbide ceramic heating tube blank;
3) charging and sintering the silicon carbide ceramic heating tube blank;
the sintering process comprises the steps of charging the silicon carbide ceramic heating tube blank, and heating the silicon carbide ceramic heating tube blank from room temperature to 100-200 ℃ at a speed of less than 3 ℃/min; heating to 500-700 ℃ at a speed of less than 2.5 ℃/min, and preserving heat for 1-5 h; heating to 850-1000 ℃ at the speed of less than 2 ℃/min, and keeping the temperature for 1-5 h; heating to 1100-1300 ℃ at the speed of less than 3 ℃/min, stopping heating, keeping the temperature for 1-3 h, and cooling to room temperature along with the furnace to prepare the required silicon carbide honeycomb ceramic material.
The silicon carbide ceramic heating tube comprises the following initial components:
100 parts of silicon carbide with average grain diameter of 0.1-1 mu m
40-60 parts of polycarbosilane dissolved in tetrahydrofuran liquid
15-25 parts of polyvinyl alcohol, which is dissolved in water
5-10 parts of polyacrylic acid
4-50 parts of ceramic composite material
The ceramic composite material powder comprises 1-15 parts of titanium oxide, 1-20 parts of boron-containing compound and 1-15 parts of metal aluminum powder; the boron-containing compound is one or more of borax, sodium borate, boron carbide, titanium boride, boric acid, potassium borate and boron oxide.
When the electric heater is used, the temperature is increased by more than 30% compared with the traditional water heater, the heating can be carried out in 3 minutes, the heating effect can be achieved in 10 minutes, the heat transfer speed is more than several times of that of water heating, the heat supply energy consumption is greatly reduced, the heating cost and the heating cost are reduced, the water is saved by 90%, and the comprehensive energy saving rate is more than 50%.
Example 1
The inside diameter of the safety valve of the radiator in the electric heater is 20mm, the PTC heating body comprises 3 silicon carbide ceramic heating pipes, the periphery of each silicon carbide ceramic heating pipe is coated with a copper foil, and the thickness of each silicon carbide ceramic heating pipe is 40 microns. The silicon carbide ceramic heating pipe is prepared by the following steps:
1) weighing the required components according to the amount, stirring and ball-milling to form pug;
2) extruding and molding the pug, and drying to obtain a silicon carbide ceramic heating tube blank;
3) charging and sintering the silicon carbide ceramic heating tube blank;
the sintering process comprises the steps of charging the silicon carbide ceramic heating tube blank, and heating the silicon carbide ceramic heating tube blank from room temperature to 200 ℃ at a speed of less than 3 ℃/min; heating to 500 ℃ at a speed of less than 2.5 ℃/min, and keeping the temperature for 5 hours; heating to 1000 ℃ at the speed of less than 2 ℃/min, and keeping the temperature for 1 h; heating to 1300 ℃ at the speed of less than 3 ℃/min, stopping heating, keeping the temperature for 1h, and cooling to room temperature along with the furnace to prepare the required silicon carbide honeycomb ceramic material.
The silicon carbide ceramic heating tube comprises the following initial components:
100 parts of silicon carbide with average grain diameter of 0.1 mu m
40 parts of polycarbosilane dissolved in tetrahydrofuran liquid
25 parts of polyvinyl alcohol dissolved in water
Polyacrylic acid 10 parts
50 parts of ceramic composite material
The ceramic composite material powder comprises 15 parts of titanium oxide, 20 parts of boron-containing compound and 15 parts of metal aluminum powder; the boron-containing compound is borax.
Example 2
Similar to example 1, wherein the safety valve has an inner diameter of 50mm, the PTC heating body comprises 6 silicon carbide ceramic heating tubes, and the outer circumference of the silicon carbide ceramic heating tubes is coated with a copper foil and has a thickness of 35 um. The sintering process comprises the steps of charging the silicon carbide ceramic heating tube blank, and heating the silicon carbide ceramic heating tube blank from room temperature to 100 ℃ at a speed of less than 3 ℃/min; heating to 700 ℃ at the speed of less than 2.5 ℃/min, and keeping the temperature for 1 h; heating to 850 ℃ at the speed of less than 2 ℃/min, and keeping the temperature for 5 hours; heating to 1100 ℃ at the speed of less than 3 ℃/min, stopping heating, keeping the temperature for 3h, and cooling to room temperature along with the furnace to prepare the required silicon carbide honeycomb ceramic material.
Example 3
Similar to example 1, wherein the safety valve had an inner diameter of 35mm, the PTC heater consisted of 8 silicon carbide ceramic heating tubes, the outer circumference of which was coated with copper foil and had a thickness of 30 um. Similar to example 1, wherein the safety valve has an inner diameter of 50mm, the PTC heating body comprises 6 silicon carbide ceramic heating tubes, and the outer circumference of the silicon carbide ceramic heating tubes is coated with a copper foil and has a thickness of 35 um. The sintering process comprises the steps of charging the silicon carbide ceramic heating tube blank, and heating the silicon carbide ceramic heating tube blank from room temperature to 150 ℃ at a speed of less than 3 ℃/min; heating to 600 ℃ at the speed of less than 2.5 ℃/min, and keeping the temperature for 4 hours; heating to 900 ℃ at the speed of less than 2 ℃/min, and preserving heat for 3 h; heating to 1200 ℃ at the speed of less than 3 ℃/min, stopping heating, keeping the temperature for 2 hours, and cooling to room temperature along with the furnace to prepare the required silicon carbide honeycomb ceramic material.
Example 4
Similar to example 2, wherein the safety valve has an inner diameter of 35mm, the PTC heating body comprises 3 silicon carbide ceramic heating tubes, and the outer circumference of each silicon carbide ceramic heating tube is coated with a copper foil and has a thickness of 40 um.
The silicon carbide ceramic heating tube comprises the following initial components:
100 parts of silicon carbide with an average particle size of 1 μm
60 parts of polycarbosilane dissolved in tetrahydrofuran liquid
20 portions of polyvinyl alcohol dissolved in water
Polyacrylic acid 7 parts
30 parts of ceramic composite material
The ceramic composite material powder comprises 10 parts of titanium oxide, 10 parts of boron-containing compound and 10 parts of metal aluminum powder; the boron-containing compound is borax and sodium borate.
Example 5
Similar to example 1, wherein the safety valve had an inner diameter of 35mm, the PTC heater consisted of 8 silicon carbide ceramic heating tubes, the outer circumference of which was coated with copper foil and had a thickness of 30 um.
The silicon carbide ceramic heating tube comprises the following initial components:
100 parts of silicon carbide with average grain diameter of 0.5 mu m
50 parts of polycarbosilane dissolved in tetrahydrofuran liquid
15 parts of polyvinyl alcohol dissolved in water
Polyacrylic acid 5 parts
4 parts of ceramic composite material
The ceramic composite material powder comprises 1 part of titanium oxide, 1 part of boron-containing compound and 2 parts of metal aluminum powder; the boron-containing compound is boron carbide and titanium boride.
Example 6
Similar to example 1, wherein the safety valve has an inner diameter of 30mm, the PTC heating body comprises 6 silicon carbide ceramic heating tubes, and the outer circumference of the silicon carbide ceramic heating tubes is coated with a copper foil and has a thickness of 35 um. The silicon carbide ceramic heating tube comprises the following initial components:
100 parts of silicon carbide with average grain diameter of 0.8 mu m
45 parts of polycarbosilane dissolved in tetrahydrofuran liquid
20 portions of polyvinyl alcohol dissolved in water
Polyacrylic acid 8 parts
40 parts of ceramic composite material
The ceramic composite material powder comprises 10 parts of titanium oxide, 20 parts of boron-containing compound and 10 parts of metal aluminum powder; the boron-containing compound is borax.
Example 7
Similar to example 1, wherein the safety valve has an inner diameter of 30mm, the PTC heating body comprises 8 silicon carbide ceramic heating tubes, and the outer circumference of the silicon carbide ceramic heating tubes is coated with copper foil and has a thickness of 30 um. In the initial components of the silicon carbide ceramic heating tube, the ceramic composite material powder comprises 10 parts of titanium oxide, 20 parts of boron-containing compound and 10 parts of metal aluminum powder; the boron-containing compound is potassium borate and boron oxide.
Example 8
Similar to example 6, wherein the safety valve has an inner diameter of 50mm, the PTC heating body comprises 3 silicon carbide ceramic heating tubes, and the outer circumference of the silicon carbide ceramic heating tubes is coated with copper foil and has a thickness of 40 um. The boron-containing compound in the initial components of the silicon carbide ceramic heating tube is boric acid and boron oxide.
Example 9
Similar to example 2, the inside diameter of the safety valve was 40mm, and the PTC heater consisted of 3 silicon carbide ceramic heating tubes, the outer circumference of which was coated with copper foil to a thickness of 40 um. The boron-containing compound in the initial components of the silicon carbide ceramic heating pipe is boric acid and titanium boride.
Example 10
Similar to example 4, wherein the safety valve has an inner diameter of 50mm, the PTC heating body comprises 5 silicon carbide ceramic heating tubes, and the outer circumference of the silicon carbide ceramic heating tubes is coated with copper foil and has a thickness of 30 um. The boron-containing compound in the initial components of the silicon carbide ceramic heating tube is boron oxide.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that variations may be made by those skilled in the art without departing from the scope of the invention, and therefore the structure contained in the foregoing description and shown in the accompanying drawings should be considered as illustrative and not limiting the scope of the invention.
Claims (10)
1. An electric heater is characterized by comprising a boiler, a radiator, a circulating pump and pipelines for connecting all parts, wherein the boiler, the radiator and the circulating pump are sequentially connected; the boiler comprises a PTC heating body, the PTC heating body comprises a plurality of silicon carbide ceramic heating pipes, and copper foils are coated on the peripheries of the silicon carbide ceramic heating pipes.
2. The electric heater according to claim 1, characterized in that the boiler has a circular hollow cavity and is equipped with a current limiter.
3. The electric heater according to claim 1, wherein the boiler is provided with a circuitous water channel inside, and is provided with a water outlet and a water inlet.
4. The electric heater according to claim 1, wherein the boiler has LCD liquid crystal display, has remote control and manual operation modes, can be used for remote control of mobile phone, and has functions of power-off parameter protection, sensor fault prompt, system fault prompt alarm, and manual forced operation.
5. The electric heater according to claim 1, wherein the radiator comprises a plurality of radiators connected in parallel, the radiator being provided with a safety valve, the inner diameter being 20-50 mm.
6. The electric heater according to claim 1, wherein the number of the silicon carbide ceramic heating tubes is 3-8.
7. The electric heater of claim 1, wherein the copper foil has a thickness of 30-40 um.
8. The electric heater according to claim 1, wherein the electric heater is configured with a current limiter.
9. The current limiter is connected to the circuit of the PTC heater.
10. The electric heater according to claim 1, wherein the silicon carbide ceramic heating tube is prepared by the following steps:
1) weighing the required components according to the amount, stirring and ball-milling to form pug;
2) extruding and molding the pug, and drying to obtain a silicon carbide ceramic heating tube blank;
3) charging and sintering the silicon carbide ceramic heating tube blank;
the sintering process comprises the steps of charging the silicon carbide ceramic heating tube blank, and heating the silicon carbide ceramic heating tube blank from room temperature to 100-200 ℃ at a speed of less than 3 ℃/min; heating to 500-700 ℃ at a speed of less than 2.5 ℃/min, and preserving heat for 1-5 h; heating to 850-1000 ℃ at the speed of less than 2 ℃/min, and keeping the temperature for 1-5 h; heating to 1100-1300 ℃ at the speed of less than 3 ℃/min, stopping heating, keeping the temperature for 1-3 h, and cooling to room temperature along with the furnace to prepare the required silicon carbide honeycomb ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395480.0A CN111207440A (en) | 2018-11-22 | 2018-11-22 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395480.0A CN111207440A (en) | 2018-11-22 | 2018-11-22 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111207440A true CN111207440A (en) | 2020-05-29 |
Family
ID=70785229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811395480.0A Pending CN111207440A (en) | 2018-11-22 | 2018-11-22 | Electric heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN111207440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780211A (en) * | 2020-07-10 | 2020-10-16 | 马鞍山盛泰特种设备检测有限公司 | But remote control's hot-water heating equipment of family |
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|---|---|---|---|---|
| CN103086721A (en) * | 2012-09-26 | 2013-05-08 | 江苏盈天化学有限公司 | Method for preparing silicon carbide ceramic from silicon carbide solid waste |
| US20130323152A1 (en) * | 2011-03-08 | 2013-12-05 | Shin-Etsu Chemical Co., Ltd. | Readily sinterable silicon carbide powder and silicon carbide ceramic sintered body |
| CN104791893A (en) * | 2015-05-04 | 2015-07-22 | 国网冀北节能服务有限公司 | PTC ceramic electric heating device and integrated heating system |
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| US20130323152A1 (en) * | 2011-03-08 | 2013-12-05 | Shin-Etsu Chemical Co., Ltd. | Readily sinterable silicon carbide powder and silicon carbide ceramic sintered body |
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| CN111780211A (en) * | 2020-07-10 | 2020-10-16 | 马鞍山盛泰特种设备检测有限公司 | But remote control's hot-water heating equipment of family |
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