High temperature insulation solution for home appliance industry
Date：2016/8/28 views:939
Brief introduction to home appliances ( hea ) refers mainly to various electrical and electronic appliances used in homes and similar places. In addition to the home environment, can also be used in the company line number or industrial environment.
Application of ceramic fiber series products in household appliances ( generalized classification )
I Muffle furnace
● description of muffle furnace: high temperature muffle furnace is mainly used for sample pretreatment in laboratories of colleges and universities, scientific research institutes, melting test in metallurgical laboratories, heat treatment annealing, quenching, etc.
● refractory insulation material for muffle furnace:
New type of environmental protection thermal insulation material: electric furnace shell steel, built-in all-fiber integral furnace structure, made of high purity alumina fiber material, after molding high temperature sintering molding.
● advantages of muffle furnace ceramic fiber hearth: as the lightweight ceramic fiber hearth material has high compactness and small heat capacity, it has low energy consumption and high thermal efficiency, can meet the requirements of rapid temperature rise and reduction, and has the characteristics of uniform furnace temperature, good heat preservation effect, light weight, high efficiency, environmental protection and energy conservation.
II. sapphire furnace
Overview of sapphire furnace: α - Al2O3 single crystal is also called sapphire, commonly known as corundum, is a simple coordination type oxide crystal. It is made up by proces alumina powder with purity ov 99.99 %, and its growth process is in ultra-high temp. furnace, which is called sapphire furnace according to its application, and is divide into sapphire growth furnace and sapphire annealing furnace according to its use temp., also called crystal growth furnace and crystal annealing furnace. Both that crystal growth furnace and the anneal furnace are small in size.
● high - temperature heat insulation material for sapphire furnace: crystal growth furnace: 2100 ℃ ~ 2250 ℃; zirconia refractory brick + alumina fiberboard backing is used for furnace hearth.
Crystal annealing furnace: 1500 ℃ ~ 1800 ℃, the furnace adopts zirconia plate or alumina plate + zirconium containing ceramic fiber board multilayer composite, and matching binder.
● application of refractory fibreboard in sapphire furnace: advantages after application of fibreboard in sapphire furnace: taking the sapphire annealing furnace with working temperature of 1600 ℃ and volume of 1l as an example, the furnace adopts zirconia fibreboard + alumina fibreboard multilayer composite lightweight fiber material, which reduces the weight by 2 / 3 compared with the traditional sapphire crystal growth and heat treatment furnace; Has the advantages of small volume, light weight, mobile and portable, excellent performance, exquisite and beautiful appearance, heat preservation and energy conservation and the like.
Three, wall furnace
● overview of wall-mounted boiler: the gas wall-mounted boiler uses natural gas, artificial gas or liquefied gas as fuel, and the fuel is output by the burner. after combustion in the combustion chamber, the heat is absorbed by the heat exchanger. when circulating water in the heating system passes through the heat exchanger, it is heated back and forth so as to continuously output heat to the building and provide heat source for the building.
● refractory insulation material for wall-mounted furnace: the combustion chamber of wall-mounted furnace is insulated with 20 mm - 30 mm thick ceramic fiber board, and the heating pipe is wound with ceramic fiber blanket.
● advantages of ceramic fiber board for wall-mounted boiler application: on January 1, 2016, after the implementation of the national ladder gas price, the heating cost of gas-fired wall-mounted boiler heating users increased by about 30 %. in order to reduce daily expenses, wall-mounted boiler heating users must choose energy-saving wall-mounted boiler. After the low thermal conductivity ceramic fiber board is adopted in the heat preservation of the combustion chamber of the wall-mounted furnace, the energy-saving wall-mounted furnace is directly upgraded to the energy-saving wall-mounted furnace, and the unit air consumption is reduced by about 30 % in the residential heating test.
Four, fire door heat insulation
● overview of fire doors: fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time. It is located in the fire compartment, evacuation stairwells, vertical shaft and other fire-resistant partition.
Insulated fire doors ( class a ) can meet the requirements of fire integrity and heat insulation at the same time within the specified time.
Partially insulated fire doors ( class b ) shall meet the requirements of fire integrity and heat insulation within 0.50 h or more specified, and shall meet the requirements of fire integrity within the time specified after 0.50 h or more.
Non - insulated fire doors ( class c ) fire doors that meet the fire integrity requirements within the specified time.
● fire door insulation scheme: heat insulation fire doors ( class a ) are divided into class a, class b and class c. According to GB 12955 - 2008 " fire door", the technical department specifies the core plate of class c fire door: fire resistance and heat insulation ≥ 0.50 h and fire integrity ≥ 0.50 h; 10 mm ceramic fiber board is used. Class b fire door core plate: fire resistance and heat insulation property ≥ 1.00 h, fire integrity ≥ 1.00 h; A 20 mm ceramic fiber board was used. Class a fire door core plate: fire resistance and heat insulation property ≥ 1.50 h, fire integrity ≥ 1.50 h; A 30 mm ceramic fiber board was used.
At present, some fire door manufacturers adopt ceramic fiber board + ceramic fiber blanket composite as the core plate of the fire door, which not only meets the requirements of fire resistance and heat insulation, but also reduces the production cost. 2, the fire door in use process, under the influence of years of gravity will have different degrees of sag. A customer of dragon hot ceramic adopts ceramic fiber board 10 mm + ceramic fiber blanket 10 mm composite as the core plate of fire door. fire door fire resistance, flame resistance, heat insulation and heat insulation successfully pass the corresponding fire resistance, heat insulation and fire integrity test.
● advantages of ceramic fiber insulation for fire doors: ceramic fiber board and ceramic fiber blanket for fire doors shall be tested according to GB 8624 - 2006 to meet the requirements of grade a1. Ceramic fiber board is a rigid material, durable, as fire door core 30 years without deformation.
Five, automobile engine, muffler automobile engine with ceramic fiber blanket filling heat insulation, protection of automobile other electronic zero device. Mufflers are filled with ceramic fiber blankets to reduce noise pollution.
Six, fire shutter
Fire shutter adopts a new type of inorganic fireproof material composite structure, can replace the firewall, without water curtain protection, fire deformation, maintain high temperature strength and other functions.
Fire shutter to implement GB 14102 - 2005 " fire shutter" standard, grade 1, fire resistance time of 1.5 h, grade 2, fire resistance time of 2.0 H..
Fireproof roller blind adopts fireproof cloth / fireproof heat radiation cloth + fireproof cotton felt + fireproof cloth / fireproof heat radiation cloth three-layer structure, and is sewed by fireproof sewing thread. The fireproof felt and cloth with different materials and different thicknesses can be selected according to the actual use requirements.
Not only for large-scale supermarkets, hospitals, stations, airports and other places to provide fire shutter, at the same time for the fire equipment manufacturing industry to provide refractory raw materials.
Application of ceramic fiber series products in household appliances ( narrow classification )
I refrigeration appliances
Include a domestic refrigerator, a cold drink machine, etc.
Low refrigerator, cold drink machine shell heat insulation layer: nano aerogel composite insulation board 10 mm, or 10 mm VIP vacuum insulation board, not only heat insulation and cold preservation, and noise reduction.
● energy saving: 10 % - 30 % energy saving. Compare with other heat preservation materials, that pow saving is about 0.1 degrees per day.
● space saving: increase effective volume by 20 % - 30 %. By adopting the nano composite heat insulation board hlgx - 864, the cold preservation is guaranteed, the cold preservation wall is thinner, and the space is saved; compared with the house price of tens of thousands of yuan per flat, the space is saved.
● fire protection is safer: the composite insulation board can resist temperature up to 1000 ℃.
Although the price of the nano aerogel composite insulation board is still high, the electricity cost saved by using the refrigerator for 7 to 10 years is equivalent to the increased cost of using the nano aerogel composite insulation board in the refrigerator. In addition to the economic significance, the nano aerogel plate has the advantages of light weight and small volume of the refrigerator. The upper door of refrigerator door and freezer requires light weight and thin wall. it is of great technical and economic significance to adopt aerogel composite insulation board to insulate heat.
II Air conditioning
Comprise a room air conditioner, an electric fan, a ventilating fan, a cold and hot air device, an air dehumidify and that like.
● insulation cotton for air conditioning compressor: a layer of insulation cotton is wrapped outside to protect the compressor and effectively reduce noise. Insulation cotton for air conditioning mainly plays a role in noise reduction, and plays a role in absorption and damping of noise generated by compressor operation. At the same time, it can play a heat preservation effect in winter, also can reduce noise, more than 3p air conditioning will also be installed in the compressed root a heating wire, used in winter is low, prevent compression can't start heating.
● central air conditioning duct: aluminum foil covered ceramic fiber blanket ( according to GB 8624 - 2012 detection, can reach the national a1 flame retardant standard ) or aluminum foil covered glass wool blanket for heat preservation and sound insulation. Because the service life of the home central air conditioner main machine is generally 15 - 20 years, the service life of the aluminum foil coated ceramic fiber blanket is about 20 years, which is consistent with the main machine and can ensure that the thermal insulation and sound insulation materials are not replaced during the service life of the central air conditioner.
III. Cleaning appliances
Include a washing machine, a clothes dry, an electric iron, a vacuum cleaner, a floor polisher, and that like.
● electric iron and electric hair dryer: 6mm ceramic fiber blanket or ceramic fiber paper thermal insulation gasket is used inside.
Iv. kitchen appliances
Comprises an electric cooker, a microwave oven, an electromagnetic cooker, an electric oven, an electric cooker, a dish washer, an electric water heater, a food processing machine and the like.
● electric stove, gas stove, microwave oven, electromagnetic stove, electric oven, electric cooker, electric water heater: internal insulation layer, with ceramic fiber board or ceramic fiber blanket insulation, generally 10 ~ 20 mm thick can meet the requirements.
V Audio - visual appliances
Include mini-projector, televisions, radio, tape recorders, video recorders, video cameras, combination sound, and mobile phones.
● electrical insulation protection: electrical appliances will heat up after long-term use, using 1 mm ceramic fiber paper film as insulation pad, protect internal electronic parts.
● application advantages of electrical insulation pad: after using the insulation pad, the service performance of the electrical appliance is improved and the service life of the electrical appliance is prolonged.
Vi. other electrical appliances
Such as e-cigarettes and the like.
● replacement of electronic cigarette heat insulation mat: the internal temperature is about 400 ℃; after 8 mm ceramic fiber blanket is used for heat insulation, the cold side is 45 ℃; after 5 mm thick nano aerogel heat insulation blanket is used for heat insulation, the surface of electronic cigarette is not hot, and the cold side temperature is controlled below 40 ℃.
● the advantage of using aerogel composite insulation mat instead of electronic cigarette insulation mat: with nano aerogel insulation mat, the insulation thickness is reduced, the electronic cigarette is more lifelike, the hand feeling is improved, the electronic cigarette is more slender and beautiful, and the sales volume is increased.
Advantage of new high temperature insulation materials for household appliance
I aerogel products
The ceramic fiber composite thermal insulation material developed by our company in 2011 is prepared by using aerogel thermal insulation material with excellent performance and functional material with heat shielding function, adhesive and various inorganic elements, and high temperature resistant ceramic fiber material as reinforcing material through special process. The nano mesh structure of that material effectively reduce the solid-state heat conduction of the material, has extremely low heat conductivity and is 1 / 5 to 1 / 3 of that of the traditional heat insulation material. Because of its fine nanostructures, the thermal conductivity of the materials is very low and the specific surface area is very large. the scattering of light and sound is much smaller than that of the traditional porous materials.
● Advantages:
1. the special structure of aerogel and its waterproof and compressive properties make its service life up to 20 years, much higher than traditional materials.
2. the unique nano three-dimensional network structure provides superior high temperature stability and constant and lasting heat insulation performance.
3. has excellent overall waterproof performance, won't be affected with damp be affected with damp, absorb water corrosion pipeline, ensure long-term effective heat insulation performance, is the ideal choice of home appliance heat preservation material.
4. the nano aerogel composite thermal insulation felt has good flexibility, tensile strength and compressive strength, can resist brutal construction, long-term use without settlement and deformation. The phenomenon of deformation accumulation and sharp decrease of heat preservation performance of other heat preservation materials caused by long-term high temperature or vibration is avoided.
5. green environmental protection, ensure staff health, environmental quality and equipment safety.
6. light and convenient, easy installation, save transportation and construction costs.
Second, VIP ultra-thin vacuum insulation board
Vip ultra-thin vacuum insulation board is a new and efficient thermal insulation material, and it is also the best thermal insulation material at present. Based on the vacuum insulation principle, the high-efficiency heat insulation is realized by furthest improving the vacuum degree in the board and filling the core layer heat insulation material, and the high-efficiency heat insulation has the excellent performances of low heat conductivity, ultrathin, light weight, fireproof and incombustible, green environment protection, energy conservation and the like.
