Film heater

FIELD: flat electric heaters of emitting type, in particular, film electric heaters, used as a basis for creating radiation heating systems of industrial, social, cultural and inhabited rooms, and also in systems for heating young animals and birds.

SUBSTANCE: film electric heater contains meander-shaped thin resistive heating and emitting element made of foil in form of continuous ribbon of precision current-conductive material, positioned between two flexible thermo-resistant electro-isolating films and provided with contacts for connection to electric network. The electric heater is provided with emitting element in form of aluminum foil, mounted between external electro-isolation film and resistive heating and emitting element, and separated from resistive heating and emitting element by electro-isolating film, no more than 30 micrometers thick. The distance between adjacent edges of parallel stripes of resistive element equals 20-100 millimeters.

EFFECT: reduced flow of precision material and increased reliability due to reduction of total length of current-conductive section of heater.

2 cl, 1 dwg

 

Patentable invention relates to flat heaters of the radiant type, in particular for film heaters used for heating of domestic and industrial premises.

The famous "Heating and insulation module /see EPO application No. 0146788, MKI NV 3/14, 3/36, 1984/, which is designed to obtain ceilings, providing heating radiation. The module contains a heater formed by heating the film to be fixed to the surface of the insulating layer, which simultaneously performs the function of additional or suspended ceiling. In the working position of the film facing the heated space and its electrical contacts connected to the power bus. In General, the module design is hard, which reduces consumer properties, and the resistive element is made in the form of a conductive layer, almost completely covering the surface of the film. The resistive element is made from tin-lead alloy, which leads to the high cost of the module.

Known Flexible heater"protected A.S. USSR № 377977, MKI NV 3/14, in which the conductive material was used graphite cloth, protected by insulating rubber layer. The heater due to the flexibility of convenient to use the tion, because they can cover not only a flat surface but with fairly complex topography. However, carbon-graphite cloth poorly connected with a rubber membrane, which leads to the formation of air bubbles, considerably reducing technical characteristics of the heater.

Introduction to graphite fabric sulfur to increase the bond strength between the fabric and rubber shell inhibits the production of such a heater, as this requires a refined environment. And most importantly - a positive result was unstable. In addition, the presence of sulfur and rubber insulating layer affect the efficiency of the heater.

From the description to the Japan patent No. 5327496, MKI NV 3/14, 1978 known "Flat electric heating element with radiation from one side of the surface. It consists of a transparent heater insulating film (Teflon, polyester resin), which placed zigzag resistive element, aluminum, and tin foil. "Working side" of the resistive element faced with another film of synthetic transparent heat-resistant resin with a negative temperature coefficient of resistance (polyvinyl chloride, polyamide), in turn, covered with aluminum or steel foil, which acts as a screen./p>

The heater has good heat radiating properties, high efficiency, because the radiation loss is minimized due to the successful combination of materials used. But this heater is more expensive, because, first, the resistive element, almost completely covering the surface of a film made of tin, which also has a low strength, and secondly, because more complex designs, including reflective screens. Their use increases the cost of production, complicates the technology of Assembly and increases the weight of the heater.

Also known "Film heater system for electric heating of buildings in the Federal Republic of Germany patent No. 3038417, MKI NV 3/14, 3/36, 1980

This device is a tape of a resistive element (foil) tin-lead-antimonic alloy, which zigzag is located between two flexible insulating plates, each of which is double-layered. The inner layer adjacent to the resistive element made of plastic film and outside is polyester. The resistive element has landroversnow shape and almost completely covers the surface of the film. Its parallel sections (strips) sequentially interconnected bridges. The heater is supplied with leads for connection to electric the network.

Despite the fact that the heater is made of a composition with a low content of tin (up to 52%) and is cheaper than, for example, "Film heater" at the request of Germany No. 2705472, MKI NV 3/14, which contains 61,5% tin (by weight), the cost remains high.

Another disadvantage is the low mechanical reliability of the device element, due to the properties of the materials used for its manufacture. Foil based on tin and lead with an additive antimony has a yield stress at break of less than 20 kPa/mm2when the thickness of the foil to 0.45 mm. in Addition, the alloy is very brittle and when it bends easily destroyed. Therefore, to prevent from damage resistive element is necessary to apply a fairly thick insulating sheath.

The low mechanical strength of the known foil is reflected in the operational characteristics of the heater, in particular, to provide operating power, adopted by the industry 150...300 watts when the thickness of the foil 7...25 μm, the heater module is available with the emission area of not less than 1 m2a series connection of resistive elements. Reduction of the overall dimensions of the module heater necessitates increasing the thickness of the foil to maintain the required power, therefore, to waste expensive material is s.

Also known "Film heater" RF patent No. 2088047, IPC NV 3/18, 3/36, 1997

In this device in order to provide increased strength and reduce the cost of the resistive element is made of an amorphous alloy of metals, or transition metals and metalloids. This heater is more durable and a bit cheaper than the heater on the basis of tin and lead with an additive antimony. Here also, as in the previous heater resistive material completely covers the surface of the film.

As a prototype by the applicant accepted "Film heater", RF patent No. 57070, IPC NV 3/18, 3/36 priority 03.01.2006,

This device contains the common features of the previously described heater. In particular, it is a flat heater having a planar resistive element foil meander shape.

Also, as in the previously described heater, radiant element is itself a resistive element that performs both the role of the heating element.

The advantage of this heater is that:

parallel strips of a resistive element connected without jumpers, i.e. the resistive element from a continuous ribbon;

foil made of precision conductive materials based on iron, which provides mechanical strength and performance over the possibility;

- an additional advantage is the availability of this material and its cost is much lower than the other.

The disadvantage of this heater is that for the formation of the required area and the radiation flux of the parallel bars should be positioned so that the distance between adjacent sides of the strips was not more than 2 mm, This leads to a large consumption of expensive precision material that constitutes about 50% of the cost of the heater.

The aim of the present invention is to improve reliability and reduce costs of precise material used in the heater as a resistive heating element.

This objective is achieved in that the emitter of the heater is made of two-element.

As the first main radiating element is a thin metal, in particular aluminum, foil, installed between the insulating film and the resistive element and separated from it by an insulating film, a thickness of not more than 30 μm.

As the second element applies a resistive heating and radiating element meander shape of the foil in the form of a continuous ribbon of precision conductive material located between two flexible heat-resistant insulating films and sleep the right leads for connection to the electrical network. The second element (resistive heating element) by passing through it an electric current heats the metal (aluminum) foil (first element), which becomes the main radiator heat flux. The resistive element performs a primary function as a means of heating the metal foil, and as a means of radiation is only optional. The distance between adjacent edges of parallel strips of a resistive heating element is 20-100 mm, This distance is optimal because it provides a valid temperature non-uniformity on the surface of the emitter in 1-1,5°C. Distance less than 20 mm and above 100 - increases the non-uniformity of temperature over 1.5°C.

Through the use of this distance reduces the number of parallel strips and the total length of the conductive portion of the heater, which is 3-5 times reduces the precision of the material and increases the reliability of the conductive part by reducing its total length.

The applicant believes that the patented invention fully meets the criteria of novelty and inventive step, because in the study of the level of equipment available to the applicant together patent and scientific and technical information found no device with two-element IP is anoniem, where the main radiator is aluminum foil. The use of aluminum foil will significantly reduce the consumption of expensive precision metal.

The applicant believes that the properties allocated to them of the distinctive features of the invention are not derived explicitly from a combination of technical and technological information. The applicant has found their experiential way.

The drawing shows - a - General view of the proposed heater; b - type heater according to section a-a; b - view of the film heater on the arrow B side of a resistive heating element.

Film heater contains two sheets of flexible heat-resistant insulating film 1, which can be used polyethylenterephtalate film on THE 6-495761783-334-90 thickness of 75 μm or more, which is placed between the resistive heating element 3 from the tape precision conductive material and a radiating element of metal, in particular aluminum foil 4, and the heating and radiating elements separates the thin film 5 of a thickness of not more than 30 μm from the same material as the insulating film.

The resistive heating element 3 has a plan meander shape in the form of strips, wound from a tape precision material continuously without the use of jumpers. is astonia between adjacent parallel edges of the strips m (drawing) is 20-100 mm Element 3 provided with pins 2 to connect to the connecting wires (drawing a), which have a free end for connection to an external electrical network. The ends of the heater should be patched with tape.

Prototype electric heater in terms of size 330×5000 mm and a thickness of about 220 μm was formed from 2 sheets of the above-mentioned film thickness of 75 microns, with a resistive heating element in the form of foil tape with a thickness of 10 μm radiating element of aluminum foil 15 μm, the thin film separating the resistive element and aluminum foil. The heater has a radiant power in the range of 125 to 150 W/m2the surface temperature in the range of 40-50°With, the specific weight of about 300 g/m2if the mass of the resistive element about 50 grams.

A comparative analysis of the patentability of the heater with the prototype shows that the radiating surface is formed of a resistive heating element 3 and the radiating element of aluminum foil, which is placed between two heat-resistant film 1, and the distance m between two adjacent strips in the prototype is not more than 2 mm, and patented the electric heater can be from 20 to 100 mm, This leads to reduce the precision of the material in 3-5 times, depending on the concrete implementation of electric heater

The heater works as follows: when connecting the findings to the mains resistive element heats up and heats the aluminum foil. In stationary mode, the entire surface of the heater is almost uniformly preheated to a temperature of 40-45°C. Under the action of the temperature with the heater surface is radiated into the air space uniform thermal infrared flux soft longwave spectrum.

Such a heater may be the basis for the creation of radiant heating systems productivity, socio-cultural and residential premises, as well as for heating systems of young animals and birds.

1. Film heater containing a flat meander shaped resistive heating and a radiating element of the foil in the form of a continuous ribbon of precision conductive material located between two flexible heat-resistant insulating film and is provided with leads for connection to the electrical network, characterized in that it is provided with a radiating element in the form of aluminum foil that is installed between the outer insulating film and the resistive heating and radiating element and separated from the resistive heating and the radiating element further introduced electrosol the respective film thickness of not more than 30 μm.

2. Film heater according to claim 1, characterized in that the distance between adjacent parallel edges of the strips of resistive heating and the radiating element is 20-100 mm



 

Same patents:

FIELD: medicine.

SUBSTANCE: method of cure includes mode of magneto-therapeutic influence by single-directed magnetic field and/or mode of simultaneous influence of hyperthermia and magnetic therapy at values of magnetic induction of 30-50 mT and temperature of 40-55°C while temperature alternately changes within 40-55°C at temperature gradient of 0,1-1°C per second. Device has two plates for therapeutic influence. Plates are connected together by elastic connecting member and provided with cases made of plastic mass. Plastic mass tightly embraces magnetic filed sources, disposed in it, and heating wires. Heating wires are connected with electric power unit through current input member. Electric supply unit is made for periodical interruption of voltage supply onto heating wires made of Ni-Cr alloy. Magnetic field sources have to be permanent magnets embraced with turns of heating wires. Electric supply unit has voltage converter. First output of converter is connected with input of processor; output of converter is connected with first input of switch. Voltage converter has its second output connected with second input of switch; output of switch has to be output of electric supply unit for connecting to heating wires.

EFFECT: simplified design; improved efficiency of cure.

9 cl, 4 dwg

Thermoelectric mat // 2304368

FIELD: electrical engineering; thermoelectric mats for heating concrete, soil, fillers, and the like.

SUBSTANCE: proposed thermoelectric mat has layer-by-layer arranged external moisture-proof insulating coating contacting surface being heated in the course of mat operation, heating element made of at least two parallel strips of flexible nonmetal current-conducting material separated by insulating inserts and provided with electrodes at edges, internal insulating layer, heat-insulating layer, and moisture-proof coating; thickness of external moisture-proof insulating coating where h is thickness of external moisture-proof insulating coating; K1 = 0.01 - 0.03 is factor depending on kind of material being heated; K2 = 0.01 - 0.06 is factor characterizing strength of external moisture-proof insulating coating material; S is thermoelectric mat surface area; internal insulating layer is disposed under elastic conducting strips at distance of minimum 1 mm therefrom.

EFFECT: enlarged service life of thermoelectric mat.

1 cl, 2 dwg

FIELD: electrothermy, electric heaters such as fiber-plastic ones for medicine, agriculture, liquid and gaseous media heating devices for various industries.

SUBSTANCE: proposed woven resistor unit has electricity conducting and heat liberating threads disposed in parallel with power electrodes made of tinsel threads and separated from them by insulating threads; uniformly distributed perpendicular to electricity conducting and heat liberating threads and tinsel threads of power electrodes throughout resistor unit length are additional and current-distributing electrodes made of tinsel threads. Manufacture of woven resistor unit involves cutting of resistor unit blank of desired geometry from current-conducting fabric followed by cutting peripheral zones of all current distributing electrodes and some of peripheral zones of additional electrodes in pack of insulating threads contacting power electrodes on one end and pack of electricity conducting and heat liberating threads, on other end; peripheral zones of additional electrodes are cut out of alternating sides of pack of electricity conducting and heat liberating threads for switching circuit of desired resistor unit; terminal current conductors made, for instance, from copper foil run over with tin and provided with power cord are attached to edges of power and additional electrodes of resistor unit.

EFFECT: enhanced electric safety and reliability of woven resistor unit.

2 cl, 7 dwg

FIELD: electric engineering, in particular, electrothermics, concerns engineering of electro-heating fabric, which can be used in heating devices for home and industrial use, and also concerns method for producing electro-conductive resistive thread for said fabric.

SUBSTANCE: electro-heating fabric is a cloth formed of intertwined threads, consisting of main non-electro-conductive threads, having first direction, and electro-conductive resistive threads, having second direction, perpendicular to the first one, each one of which consists of central fiber with cover of polymer resistive material, containing carbon filler, consisting of technical carbon and graphite, and provided with conductive threads, main non-electro-conductive threads and electro-conductive resistive threads are intertwined in form of mesh, forming cells, value of step h between electro-conductive resistive threads is determined from mathematical expression. Technical result is also achieved, because method for producing electro-conductive resistive thread, including production of solution of polymer resistive material by diluting polymer binding agent in solvent and mixing of resulting solution with carbon filler, then applying of produced mixture in form of cover onto central fiber by drawing it through solution and draw plate, removing solvent from resistive cover by drying the thread in a flow of hot air, while as polymer binding agent, polyurethane resin is utilized, as central fiber, a thread of polyacrylnitrile fiber is utilized or combined fiber of basalt and polyester fibers, draw plate is mounted in vertical position with possible rotation around its axis and with possible inclination of its vertical position, while lower aperture of draw plate is dipped in solution of polymer carbon-containing resistive material and has larger diameter, than upper aperture, while drying of thread is performed at temperature 150-160°. Angle of inclination of draw plate from vertical position is 10-20°.

EFFECT: stable electrical resistance along whole length of product being produced, reliable electrical contact, method for producing electro-conductive resistive thread also provides for lower costs of product due to creation of continuous process.

2 cl, 4 dwg, 1 tbl

Thermal fabric // 2278190

FIELD: production of fabrics which generate heat by means of power source and may be used for manufacture of clothing, seats, quilts, etc.

SUBSTANCE: thermal fabric comprises non-conductive thread, heating thread with positive temperature coefficient, and two current-conductive terminals. Heating thread comprises core, enclosure made from matrix including embedded current-conductive particles, and isolating sheath.

EFFECT: provision for creating fabric free of wires and possessing the function of self-regulating heating.

29 cl, 5 dwg

FIELD: furniture, particularly heated furniture piece that may be used in home, possibly for medical-prophylactic purposes.

SUBSTANCE: furniture object includes support for engaging with user having on surface layer of mineral material selected from group containing ceramics and natural stone. Support is provided at least with one electric heating device mounted at least on part of its surface turned to user and placed under layer of mineral material. Said device is in the form of panel electric heater irradiating heat for heating layer of mineral material along its thickness in temperature range 30-50°C in order to generate in said layer elastic acoustic waves in ultrasound and hyper-sound bands. Support is provided with unit for controlling temperature of heating layer of mineral material under which respective panel of electric heater is arranged.

EFFECT: enhanced comfort, intensified process of metabolism of user, keeping healthy state of user and providing prophylaxis of diseases due to heat action upon organism of user.

9 cl, 2 dwg

The invention relates to electrothermal, namely the temperature control of complex geometric shapes, and can be used in such industries as rocket science for heating the various elements of rocket design, as well as in everyday life, medicine, celosamente and other industries

The invention relates to the field elektroobogrevatelnye technology and is designed for panel heating vehicles, in particular aircraft, as well as for local heating of passenger seats and pasture space

The invention relates to the field of electrical engineering for the design of the electric heating fabric, intended to supply a controlled amount of heat to the surface

The invention relates to an electric heater designed to heat molded foam pillows, for example, car seats or mattresses

FIELD: furniture, particularly heated furniture piece that may be used in home, possibly for medical-prophylactic purposes.

SUBSTANCE: furniture object includes support for engaging with user having on surface layer of mineral material selected from group containing ceramics and natural stone. Support is provided at least with one electric heating device mounted at least on part of its surface turned to user and placed under layer of mineral material. Said device is in the form of panel electric heater irradiating heat for heating layer of mineral material along its thickness in temperature range 30-50°C in order to generate in said layer elastic acoustic waves in ultrasound and hyper-sound bands. Support is provided with unit for controlling temperature of heating layer of mineral material under which respective panel of electric heater is arranged.

EFFECT: enhanced comfort, intensified process of metabolism of user, keeping healthy state of user and providing prophylaxis of diseases due to heat action upon organism of user.

9 cl, 2 dwg

Thermal fabric // 2278190

FIELD: production of fabrics which generate heat by means of power source and may be used for manufacture of clothing, seats, quilts, etc.

SUBSTANCE: thermal fabric comprises non-conductive thread, heating thread with positive temperature coefficient, and two current-conductive terminals. Heating thread comprises core, enclosure made from matrix including embedded current-conductive particles, and isolating sheath.

EFFECT: provision for creating fabric free of wires and possessing the function of self-regulating heating.

29 cl, 5 dwg

FIELD: electric engineering, in particular, electrothermics, concerns engineering of electro-heating fabric, which can be used in heating devices for home and industrial use, and also concerns method for producing electro-conductive resistive thread for said fabric.

SUBSTANCE: electro-heating fabric is a cloth formed of intertwined threads, consisting of main non-electro-conductive threads, having first direction, and electro-conductive resistive threads, having second direction, perpendicular to the first one, each one of which consists of central fiber with cover of polymer resistive material, containing carbon filler, consisting of technical carbon and graphite, and provided with conductive threads, main non-electro-conductive threads and electro-conductive resistive threads are intertwined in form of mesh, forming cells, value of step h between electro-conductive resistive threads is determined from mathematical expression. Technical result is also achieved, because method for producing electro-conductive resistive thread, including production of solution of polymer resistive material by diluting polymer binding agent in solvent and mixing of resulting solution with carbon filler, then applying of produced mixture in form of cover onto central fiber by drawing it through solution and draw plate, removing solvent from resistive cover by drying the thread in a flow of hot air, while as polymer binding agent, polyurethane resin is utilized, as central fiber, a thread of polyacrylnitrile fiber is utilized or combined fiber of basalt and polyester fibers, draw plate is mounted in vertical position with possible rotation around its axis and with possible inclination of its vertical position, while lower aperture of draw plate is dipped in solution of polymer carbon-containing resistive material and has larger diameter, than upper aperture, while drying of thread is performed at temperature 150-160°. Angle of inclination of draw plate from vertical position is 10-20°.

EFFECT: stable electrical resistance along whole length of product being produced, reliable electrical contact, method for producing electro-conductive resistive thread also provides for lower costs of product due to creation of continuous process.

2 cl, 4 dwg, 1 tbl

FIELD: electrothermy, electric heaters such as fiber-plastic ones for medicine, agriculture, liquid and gaseous media heating devices for various industries.

SUBSTANCE: proposed woven resistor unit has electricity conducting and heat liberating threads disposed in parallel with power electrodes made of tinsel threads and separated from them by insulating threads; uniformly distributed perpendicular to electricity conducting and heat liberating threads and tinsel threads of power electrodes throughout resistor unit length are additional and current-distributing electrodes made of tinsel threads. Manufacture of woven resistor unit involves cutting of resistor unit blank of desired geometry from current-conducting fabric followed by cutting peripheral zones of all current distributing electrodes and some of peripheral zones of additional electrodes in pack of insulating threads contacting power electrodes on one end and pack of electricity conducting and heat liberating threads, on other end; peripheral zones of additional electrodes are cut out of alternating sides of pack of electricity conducting and heat liberating threads for switching circuit of desired resistor unit; terminal current conductors made, for instance, from copper foil run over with tin and provided with power cord are attached to edges of power and additional electrodes of resistor unit.

EFFECT: enhanced electric safety and reliability of woven resistor unit.

2 cl, 7 dwg

Thermoelectric mat // 2304368

FIELD: electrical engineering; thermoelectric mats for heating concrete, soil, fillers, and the like.

SUBSTANCE: proposed thermoelectric mat has layer-by-layer arranged external moisture-proof insulating coating contacting surface being heated in the course of mat operation, heating element made of at least two parallel strips of flexible nonmetal current-conducting material separated by insulating inserts and provided with electrodes at edges, internal insulating layer, heat-insulating layer, and moisture-proof coating; thickness of external moisture-proof insulating coating where h is thickness of external moisture-proof insulating coating; K1 = 0.01 - 0.03 is factor depending on kind of material being heated; K2 = 0.01 - 0.06 is factor characterizing strength of external moisture-proof insulating coating material; S is thermoelectric mat surface area; internal insulating layer is disposed under elastic conducting strips at distance of minimum 1 mm therefrom.

EFFECT: enlarged service life of thermoelectric mat.

1 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: method of cure includes mode of magneto-therapeutic influence by single-directed magnetic field and/or mode of simultaneous influence of hyperthermia and magnetic therapy at values of magnetic induction of 30-50 mT and temperature of 40-55°C while temperature alternately changes within 40-55°C at temperature gradient of 0,1-1°C per second. Device has two plates for therapeutic influence. Plates are connected together by elastic connecting member and provided with cases made of plastic mass. Plastic mass tightly embraces magnetic filed sources, disposed in it, and heating wires. Heating wires are connected with electric power unit through current input member. Electric supply unit is made for periodical interruption of voltage supply onto heating wires made of Ni-Cr alloy. Magnetic field sources have to be permanent magnets embraced with turns of heating wires. Electric supply unit has voltage converter. First output of converter is connected with input of processor; output of converter is connected with first input of switch. Voltage converter has its second output connected with second input of switch; output of switch has to be output of electric supply unit for connecting to heating wires.

EFFECT: simplified design; improved efficiency of cure.

9 cl, 4 dwg

Film heater // 2321188

FIELD: flat electric heaters of emitting type, in particular, film electric heaters, used as a basis for creating radiation heating systems of industrial, social, cultural and inhabited rooms, and also in systems for heating young animals and birds.

SUBSTANCE: film electric heater contains meander-shaped thin resistive heating and emitting element made of foil in form of continuous ribbon of precision current-conductive material, positioned between two flexible thermo-resistant electro-isolating films and provided with contacts for connection to electric network. The electric heater is provided with emitting element in form of aluminum foil, mounted between external electro-isolation film and resistive heating and emitting element, and separated from resistive heating and emitting element by electro-isolating film, no more than 30 micrometers thick. The distance between adjacent edges of parallel stripes of resistive element equals 20-100 millimeters.

EFFECT: reduced flow of precision material and increased reliability due to reduction of total length of current-conductive section of heater.

2 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: invention is attributed to electric engineering, in particular to multilayer thermostatic pack for temperature control of complex geometric configuration products which contain outer and inner protective layers between which there are mated heat-insulation inserts and strips of current-conducting material with dielectric layers. Multilayer pack follows the geometry of temperature-controlled product. The case is made of separate sections whose layers are formed by dust-proof-and-moisture-proof fabric with textile fasteners interconnected along conjugation lines at joints of heat-insulating inserts which are additionally fixed by mechanical clamps. In this multilayer pack its top part consists of tapered portion and cylindrical portion made of separate sections in the form of a book consisting of two or more mechanically interconnected components where terminating component is fitted with apron with through holes in fabric. In this multilayer pack, resistive components in peripheral zone of current distributing electrodes are located in the array of insulating fibers with interlacing, are cut through alternately on one and on the other side of electric-conducting fiber band. Resistive components together with power electrodes form switching comb of specified resistive component. On tips of power and current-distributing electrodes, tinned foil copper tinned is soldered. Power cords are passed through multilayer pack mass. Each of separate sections along product generatrix are interconnected in series and in parallel by electric connectors.

EFFECT: improvement of operability and operation reliability of multilayer pack for temperature control of complex geometric configuration products.

3 cl, 11 dwg

FIELD: air transport.

SUBSTANCE: device contains thermal mat made of flexible woven electric heater closed by protective electric insulating material. Water repellent material and double layer of heat insulation and water repellent are placed at internal and external surfaces of protective electric insulating material. There is DC power supply source. Thermal mat is divided into number of sections, each having its heating area. Sections of flexible woven electric heater are divided into number of units with different power defined by preset length and width of flexible woven electric heater. Thermal mat is fixed at horizontal surface of aircraft by tapes or fast-type fixing.

EFFECT: enhancement of efficiency in snow and ice removal from lateral surfaces of the aircraft; ecologic cleanliness of maintenance with use of safety power supply at optimal regulation of power consumption and simplification of structure.

3 cl, 4 dwg

FIELD: heating.

SUBSTANCE: invention can be used for heating domestic and industrial rooms, as well as for manufacturing such electric heaters. Ceiling film electric heater includes resistive radiating element having in plan view a meander shape and arranged between two layers of electric insulating films. Resistive radiating element is equipped with outputs to be connected to electric mains. Parallel strips of resistive radiating element are connected in series by means of their L-shaped bending towards the next strip transversely on one and the other side. Edges of upper and lower electric insulating layers are connected be means of tape with self-adhesive base. According to invention, room heating system includes heat insulator representing a foam heat-insulating material with reflecting layer. Outputs of resistive radiating element of ceiling film electric heater are connected via control and protection devices to power network. Device for manufacturing the bed of ceiling film electric heater includes uncoiler for strips of resistive radiating element, uncoilers of upper and lower layers of electric insulating films, device for supply of tape with self-adhesive base, laminating machine with thermal shafts and winding shafts of the ready bed, which are installed in one process line.

EFFECT: low production cost and possible use in large-scale production.

16 cl, 9 dwg

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