Thermoelectric mat for warming waterproofing carpet repair and the device rolled and mastic roofs
(57) Abstract:The invention relates to the field of construction, is used to repair and devices roll and mastic roofs. Thermoelectric Mat contains lower heating and the upper heat insulating elements connected to one another with formation of an expansion joint. The sections of the heating element projecting beyond the edges of the heater-side electrodes, amplifiers have stiffness, attached to the edge of the insulating element by means of detachable connections with one or two automatically operating compensators. The design was applied used inorganic and organic materials with special properties in various combinations, such as heat resistance and corrosion resistance, flexibility at any temperature, outdoor air, impermeability to water, oil and tarry materials and lack of adhesion to the last two, having a high thermal conductivity and heat-reflecting ability, electrical insulating properties or electrical conductivity. These properties allow you to achieve the specific electric power was applied 2-4 kW/m2and extend it with arachnia edge of the heater, parallel to the weft threads, thickened at the expense of lamination and continuous throughout their length. Each bold edge of the heater are steel electrodes separated for flexibility and compression fixedly mounted with a certain interval. Electrode design provides reliable electrical contact with the electric conductive flexible wire bus. To reduce the current load on the electrical bus and to a more uniform distribution of current between electrodes of the parallel bus connected shunt of flexible electrical wires. The size was applied aligned with the distances between the joints of panels of material rolled roof. Effect: ensures uniform temperature of the lower part of the casing heating element within 121-350°C. Replacement of any damaged item was applied potential at the place of production of roofing work through the use of detachable connections. It is possible to use a thermo Mat for warming waterproofing carpet roll and mastic roofs with a rough surface and at any time of the year. The security service was applied is the availability of reliable electricity and thermal insulation 2">The invention relates to the construction, including construction and repair production, namely, devices intended for repair and devices roll and mastic roofs, by heating waterproofing carpet.Known thermomechanical Mat - flexible heating device in the form of heating blankets, containing the heating element of nichrome wire, is threaded into asbestos fabric, insulated with two sides 1-2 layers of fiberglass and covered with insulating layers of wadding, impregnated with flame retardant. All the elements of thermoelectric Mat enclosed in moisture-proofing membrane made of rubberized fabric or heat-resistant rubber (Akhanov B. C. Electrothermics in concrete technology. Makhachkala, Doug. the book, publishing house, 1971).Thermoelectric Mat has the following disadvantages:
not provided with a uniform temperature field over the entire heating surface of the Mat due to the use of the wire heater;
specific electric power of thermoelectric Mat less than 1 kW/m2;
lack of flexibility of the Mat due to the presence of thick (diameter > 3 mm) nichrome wire;
the use of Mat m the effective heat transfer;
does not provide information about the use of the Mat in the repair and installation of roll and mastic roofs;
the complexity of manufacturing the heating element;
the probability output of thermoelectric Mat from damage due to breakage of nichrome wire as a result of frequent bending of the Mat.Known thermoelectric pillow comprising enclosed in a protective sheath of flexible sheets of material having electrically conductive particles uniformly distributed in the plate on two opposite edges of which are attached brackets electrodes grooved form. To the electrodes connected wires to connect thermoelectric pillow to a source of electrical energy (U.S. Patent N 3749886, author Michaelson Dwight C. IPC H 05 B 3/36 "Thermoelectric pillow").The disadvantages of electric pillows include the following. Do not specify the presence or absence of the flexibility of the grooved electrodes affecting the flexibility of thermoelectric pillow in the direction of arrangement of the electrodes. It is impossible to use as a flexible plate material with uniformly located in the volume of conductive particles, for example materials having KGO layer in the pillow to reduce heat loss at the surface warming designs. There is no information about the insulation materials of the pillow. The holes in the flexible plate contribute to uneven heating of the structures. Not indicated the possibility of using thermoelectric pillow in the repair and installation of roll and mastic roofs.The closest in technical essence is a thermoelectric Mat containing the lower heating element, to which is glued equal to the area of the upper heat insulating member. The heating element contains more narrow than himself, the flat rectangular electric heater made of carbon fabric coated with a shell of water-resistant material with heat resistance up to 120oC. Shell bonded to both surfaces of the heater. Two opposite edges medney and tin and act as electrodes. They separated for the flexibility of multiple triangular cutouts on the part soldered and connected to them stranded bus connected to a source of electrical energy. The insulating element of the Mat is made of alternating layers of insulating material and aluminum foil, and coated on the outer side of the Mat by a shell of material similar to the material of the sheath heating element. The Mat has the events during capital repairs of residential buildings / HUM of the RSFSR, Rostov-on-don, 1981, page 47 and 83, 1st paragraph, paragraph, 3rd paragraph from the beginning of the paragraph, page 48).Thermoelectric Mat has the following disadvantages. Possibly a blown heater in the seat formed in the carbon fabric folds in the operation of the Mat due to shrinkage used as sheath and insulating layer of Mat material with a heat resistance of not more than 120oC. the Impossibility of replacement and repair of heating or insulating element without destroying the Mat at the place of production of roofing work. Insufficient for rapid heating waterproofing carpet roll or mastic roofing specific power Mat (not more than 0.5 kW/m2). Triangular cutouts along the edges of the heater are the hub of the mechanical stresses arising when carrying and bending of the Mat, and the most likely site of rupture of carbon fabric. In places gluing sheath heating element to the electric heater is partially impregnated carbon fabric glue, which degrades the electrical contact between the individual fibers in the yarns of the fabric, and therefore, there is a rapid overheating in the area of their contact and burnout. In addition, the specified glue the STI and uneven heating waterproofing carpet area of their contact, as well as local overheating of a heating element with its destruction. Similar overheating possible for loose laying the Mat on the roof surface with potholes, grooves near the water intake of craters, valleys, adjacency to vertical surfaces, where an air gap is created between the heat element of the Mat and the surface of the roof. The electrical connection to the bus and the electric heater through electrodes made by plating and obluceniem edges of the heater is not reliable and is an obstacle to increase the share of electric power Mat more than 0.5 kW/m2for the following reasons: the small thickness of the electrodes; insufficient strength and heat resistance used in the manufacture of materials (copper and tin); not considered the presence of a chemical interaction between the carbon cloth and copper electrode corrosion of the latter. The use of non-ferrous metals and complex process for the galvanic deposition or spraying them on the edge of the carbon fabric increases the cost of the entire Mat.When heated copper electrical bus, located in the hot zone of the Mat around the heater (if it is connected to a source of electrical energy), elek what about them temperature field on the heated surface. In addition, the bus quickly breaks down due to oxidation of copper. The material of the lower part of the casing heating element does not possess chemical resistance against are contained in the roof petroleum products and Degteva materials and prevents their penetration, and water in carbon cloth with her impregnation, resulting in poor electrical contact between the fibers in the yarns of the cloth heater and reduces the electrical power of the Mat, as in the case of impregnating it with glue. In addition, the heater of the carbon fabric, impregnated with bitumen or tar materials, if they are freezing after switching off the Mat from the source of electrical energy, loses flexibility and becomes brittle. Not specified, the materials of the lower part of the casing heating element have chemical resistance to petroleum products and Degteva materials. Stick materials of the roof on the contacting surface of the lower part of the casing heating element, which can lead after cooling to stick the Mat to the roof or to the deterioration of its flexibility, and in the process of heating of the roof to increase thermal resistance in the contact zone with her.The dimensions of the Mat are not linked with the distance between stickneys without opening the release of cavities warping out of the water, steam and air as well as the levelling of the deformed panels rolled materials, which in turn leads to lower productivity and quality of roofing work. Not ensured continuity warm-up roof if necessary stacking two or more mats next to each other in view of the fact that the Mat on the perimeter is the cold zone, which does not cover the heater, as the last edge does not coincide with the edges of the Mat. The absence of handles at the Mat creates a disadvantage when it moves in a heated state, because of the danger of scalding the hands of the staff. Do not specify the purpose of the layers of the foil heating element.Object of the invention is the improvement of thermoelectric Mat, which may be short and uniform heating of the plots waterproofing carpet repair and re-arrange the roll and mastic roofs to the flowable state of the organic binder contained therein, at any time of the year.Proposed to achieve the technical result is to create an improved design of thermoelectric Mat with specific electric capacity of 2-4 kW/m2having ravlery and preserving the flexibility of the Mat. The Mat should be suitable for heating waterproofing carpet roll and mastic roofs with a rough surface, ensuring safe operation and to provide for replacement of any damaged item at the place of production of roofing work, and his parts in the Studio. The size of the Mat should be linked with the distances between the joints of panels of material rolled roof.The technical result is achieved in that thermoelectric Mat for warming waterproofing carpet repair and the device rolled and mastic roofing contains the lower heating element is attached to the upper heat insulating element, the heating element has a flat rectangular electric heater made of carbon fabric covered termoplastici shell, the lower part of which is intended for installation on heat design on two opposite edges of the heater are metal electrodes separated for flexibility on the part of United electric wire bus connected to a source of electrical energy, a heat insulating element made of insulating material and aluminum foil and covered darmowego is Strogov, have amplifiers rigidity attached to the shell with internal or external side to the amplifiers rigidity is attached through one or two automatically operating joints with the help of detachable joints edge of the insulating element to form between him and the heating element of an expansion joint, the longitudinal edges of the heater parallel to the warp threads of the fabric and fit inside the Mata 0.1-70,0 mm from the edge, lateral edges of the heater parallel to the weft threads are thickening the width of 8-50 mm due to the layering and made continuous along the entire length, each bold edge of the heater still with an interval of 1-30 mm fixed part of the steel electrode, between them thickened edge interval 7-30 mm compacted firmware layers of carbon fabric, part of the electrode consists of two jaws thickened edge parallel strips with thickness of 0.5-4.0 mm, equal in length (30-400 mm), but different or the same width, strips, wider than a thicker edge that is attached parallel to it at a distance of 2-40 mm from the heater electrical bus connecting portion of the electrode, moreover, when the length of each electrode 300-2000 mm parallel them prisoedineniu shell or on the lower part of the casing of heat-insulating element stacked heat storage layer of a thickness of 2-10 mm of flexible heat-resistant insulating material with heat conductivity and heat capacity, close to the material warms waterproofing carpet, shelter heat insulating element under the insulating heat-conducting material is placed a layer thickness of 0.02-0.5 mm of aluminum foil, the upper and lower part of the casing heating element bonded firmware by its edges with the fixation of the inner layers, sheath heating element made of insulating material, the material of the bottom, in addition, is impervious to water, oil and tar and chemically resistant to the last two, and also has anti-adhesive properties, sheath heating element and adjacent the lower part of the shell of the heat insulating element have a heat resistance of 121-350oC. the Dimensions of the longitudinal and transverse edges of the heater or one of them is a multiple of the distance between the joints of panels of material in repairable or have roll roofing. The amplifiers stiffness heating element attached handles for carrying the Mat in a heated state.Design improvement of thermoelectric Mat (hereinafter "was applied"), aimed at increasing its power density and temperature increase in the area of contact with the surface of the heated water is placed between the heating and insulating elements. Seam provides the possibility of relative displacement of the elements of the Mat relative to each other in the plane of their contact. The connection elements by means of one or two automatically operating compensators makes it movable within emerging in thermo Mat temperature deformations and bending deformations, but it prevents you from moving relative to each other, a heating and heat insulating elements beyond the Mat.In addition, the presence of an expansion joint and the joints between the heat and insulating elements prevents the formation of folds carbon fiber electric heater with non-uniform shrinkage and elongation of non-metallic parts heating and insulating elements (shells, heat-insulating and heat-retaining layer, an electric heater) which are exposed during operation Mata different value of temperature and mechanical stress.Thus, the temperature of the heating element substantially above the temperature of the heat insulating element; when carrying the Mat, accompanied by its deflection, the heating element occur tensile forces, and shelter heat insulating compressive.Folds in carbon fabric electr formed along the weft threads, not across the width of fabric, when the warp threads in the crease to form a loop, causing the base circuit and, as a consequence, rapid heating to a temperature exceeding 350oC, in which there is intense oxidation of carbon and blown filaments.The presence of folds leads to the reduction of the electrical resistance of the warp due to their shortening (due to loops) and the transmission power larger than in the parallel threads outside of the folds. Next to the crease due to the potential difference of the electric current is flowing from warp to weft threads and then moving in parallel to the warp threads within the folds. In addition, in the crease is electronicAsia at the bases of the loops already in loose contact of the filaments with the possible formation of microelectrodes.The presence of amplifiers rigidity of the heating element on its parts protruding beyond the edges of the heater-side electrodes, it is necessary to prevent rupture of the membranes heating element fixing thereto handles for carrying the Mat, expansion joints and wiring. Amplifiers rigidity of the heating element provide the position of the electrodes, in which accoste electric heater with the formation of transverse folds in the carbon cloth heater as well as the longitudinal stretching and compression of the electrode with a gap or with a crushing electric bus and thickened edges, resulting in burnout of the Mat. While retaining the necessary flexibility of the electrode in the plane perpendicular to the heating element, since the flexibility of the plates provides the ability to turn parts of the electrode relative to each other in a specified plane.The amplifiers rigidity attached with screw connections (through one or two automatically operating compensators) the edges of the insulating element. Detachable connections necessary for the purpose of replacement of any damaged item without destroying the Mat directly on the place of production of roofing work.The longitudinal edges of the heater must be parallel to the warp threads of carbon fabric. This requirement is due to the peculiarity weave fabric in which the warp threads in the fabric structure is more upright (and, hence, shorter and have a lower electrical resistance) in comparison with the weft threads. Moreover, the cross-sectional area of the warp threads (per 1 cm width) greater than that of the weft threads (1 cm length of the blade). In this image the one ends of the warp threads, that is, the transverse edges of the heater. Thus, the transmission power for the warp is preferable, since the power of the heater per unit area will be greater.Parallel transverse edges of the heater to the weft yarns of carbon fabric required to create a uniform temperature field across the entire width of the heater between the electrodes. If there is no such parallelism of the ends of each of the weft threads are at different distances from the electrode, and thus acquire a different value of the electric potential, resulting in part of the current passing through the heater gradually flows from one end to the other (in the direction of a smaller electric potential), where the currents duck and bases are formed and allocated a greater amount of heat than other parts of the heater.The transverse edge of the heater are thickening the width of 8-50 mm, continuous along the entire length due to the multi-layer, for dense and uniform compression of their straps parts of the electrodes. This provides a fairly reliable electrical contact of the electrode with the electric heater.Every bold to the water stronger than electrodes made of nonferrous metals (for example, of copper) and have more than them, the heat resistance and lower cost. The conductivity of steel is less than the non-ferrous metals, but this is compensated by the increase in the thickness of the electrodes.Part of the electrode consists of two parallel steel bars of equal length (30-400 mm), but different or the same width. In the first case, the width of one of the strips is composed of the following dimensions: the width of the thickened edge of the heater; plus the maximum cross-sectional dimension of the electrical bus; plus the distance at which it is removed from the thickened edge (2-40 mm). The width of the other strips in this case must be at least equal to the width of the thickened edge of the heater. In the second case, the width of both strips includes sizes wider strips of the first case.In the proposed invention the mechanical connection of the parts of the electrodes. It is more technologically advanced and economically. When the compression straps beaded edges of the heater they are compacted, resulting in increased conductivity in the zone of contact of the strips with thickened edges of the heater, due to improvements in electric eliminates the additional heating surface area.The fastening parts of the steel electrode is performed as detachable and non-detachable connections. The location of the electrode on the bold edge is made with an interval of 1-30 mm to impart flexibility to the electrodes.Divide the electrode into pieces the size of 30-400 mm due to the size of the roughness of the processed surface of the roof and provides a snug fit to them was applied.Intervals thickened edges between the parts of the steel electrode perform the role of flexible parts, through which there is a more uniform distribution of electric current along the width of the heater near the electrodes while maintaining their flexibility. In addition, thickening of the transverse edges serves to prevent rupture of the carbon cloth heater between the parts of the electrodes during operation was applied.When the distance 7-30 mm between the parts of the electrode gaps thickened edge of the heater between them must be sealed firmware to ensure a reliable electrical contact between the layers of carbon fabric.To laths parts of the electrodes which is wider than a thicker edge that is attached parallel to it at a distance of 2-40 mm from electroline to miss a significant amount of current and to have flexibility, that is to have a small cross-section. But the reduction of the cross section causes an increase of resistance of the tires, increasing operations in the hot zone was applied around the heater. By passing the specified current and high resistance in the tire heat.The result presented is the voltage drop between the electrode and the uneven distribution of the electric current between them, which reduces the specific power was applied and creates an uneven temperature field in the heater, reducing the service life of a thermo Mat and worsen the quality of heat, increasing its duration.To reduce current loads attributable to the electrical bus, and prevent these consequences part of the current flow through the shunt in parallel to the bypass bus. The presence of the shunt prevents failure of the heater in case of a break or burn out of the electric bus. The shunt is made of flexible cords that do not violate the flexibility of thermoelectric Mat. There are several options for connecting the shunt to the bus (Fig. 2 and 4)
In the heating element between the heater and the upper part of the shell or the config of flexible heat insulating material with a thermal conductivity and heat capacity, close to the material roll and mastic roofs. The foregoing provides the best combination of heating rate heating element in the initial period of operation after connection to a source of electrical energy) and thermal inertia, eliminating overheating of the carbon cloth heater, leading to burnout, in the temporary absence of contact of the heating element (for example, when a loose fit) to preheat the plot waterproofing carpet roofing and maintaining a uniform area of the bottom surface of constant temperature heating element from the beginning to the end of the warm-up area waterproofing carpet.In shelter heat insulating element between the bottom shell and a layer of insulating material placed equal in area reflective and simultaneously heat-conductive flexible layer with a thickness of 0.02-0.5 mm of aluminum foil. The maximum value of thickness is achieved by layering. This layer reflects a part of the heat flux emitted by a heater (heating element), and sends it towards the heated area waterproofing carpet roof. In addition, this layer prevents overheating of the plots of the electron the gap, creating additional thermal resistance), for example, in areas of the roof with a rough surface. When this happens conductive heat transfer between sections of the heating element in the space, with different temperatures, through a layer of aluminum foil, a material having high thermal conductivity.To isolate the heater heating element Mat has a shell of insulating material. The connection of the heater and shell spend the stitching thread of the electroconductive material. The specified connection allows you to keep the same specific resistance of the carbon cloth over the entire area of the heater and to provide the specific power to 2-4 kW/m2and also to create a more uniform temperature field over the entire area of the heater, resulting in simultaneous and uniform heating of the material waterproofing carpet over the entire area of the heater. Using the connection of the heater and shell stitching provides the desired flexibility of the heating element was applied, and therefore, the required density of its contact with the uneven surface of the roof. Also join the stitching sosho element and adjacent the lower part of the shell of the heat insulating element have a heat resistance of 121-350oC, because they are in close proximity to the heater with the same temperature.Use as the shell of the heating element (lower part) of a material not permeable to water, oil and tarry materials are generally provided in the heat waterproofing carpet roll or mastic roof, prevents their penetration inside the heating element and the impregnation their carbon fabric that could degrade the electrical contact between the fibers in the yarns of the fabric of the heater and its electrical conductivity, and hence to reduce the electric power Mat. Water is getting inside the heating element, in addition, may cause a short circuit of the electric heater in heat-conductive and reflective layer of foil, and corrosion of steel electrodes.In the presence of the permeability of the lower part of the casing heating element in case of contact with the softened bitumen and tarry materials inside the heating element and hardening when disconnected from the source of electrical energy (heating element) loses flexibility and becomes brittle. Chemical resistance of the material of the lower part of the casing heating element to vosene.The proof of the lower part of the casing heating element for water, oil and tarry materials, as well as chemical resistance to them, the presence of an expansion joint and joints, eliminates the appearance of wrinkles carbon cloth heater, contribute to the increase of life was applied.The lower part of the shell heating element having antiadhesive properties, prevents sticking to the surface of the softened material waterproofing carpet roll or mastic roof, which in turn eliminates the adhesion of the Mat to the roof, the deterioration of its flexibility during cooling in the de-energized state, and when heating waterproofing carpet - increase thermal resistance in the zone of contact with the roof.The dimensions of the longitudinal and transverse edges of the heater or one of them is a multiple of the distance between joints of the panels of the roll of material in roll roofing. The multiplicity of dimensions required for the implementation of heat waterproofing carpet simultaneously across the entire width of each of the panels of the roll of material in the upper layer of the roof for later unhindered removal of accumulations of water and steam, available in cavities crosstie specified multiplicity is missing due to the lack of joints.The handle is made of an elastic material with a low thermal conductivity. The presence of the handles of the Mat creates convenience for carrying and prevents mechanical damage to the coating of the Mat when folded, rolled for transportation and the danger of scalding the hands of the staff, and fastening the handles to the amplifiers rigidity of the heating element provides the tension to carry the Mat and the possibility of returning to the original expanded position (no creases) when laying on the surface of the repaired roof without folds.Justification of the selected limits is the following.The offset of the longitudinal edges of the heater inside the Mat by an amount greater than 70 mm, it is not economically feasible, as it would lead to undue his appreciation in the manufacture and offset at a distance of less than 0.1 mm, it is technically impossible due to the lack of materials shell heating element smaller thickness.If the width of the thickened edge of the heater more than 50 mm sharp increase in consumption of materials in the manufacture of thermo Mat (steel electrodes, carbon fabric, fasteners) that causes it to rise, and without improvement technogy electrical contact strips parts of the electrode is so small, what not reliable fastening strips on the bold edge, and by passing an electrical current is overheating.The interval between the parts of the steel electrode is less than 1 mm impairs its flexibility.The specified interval of more than 30 mm leads to an uneven distribution of electric current along the width of the heater near the electrodes and uneven heating of the bottom part of the casing heating element was applied regardless of whether the seal firmware gaps thickened edges between the parts of the electrodes.In the seal firmware thickened edges between the parts of the electrode in the range of less than 7 mm is not necessary, since the current flowing through alastname edge in the given period, is quite small. In this case, the firmware thickened edge will only complicate the manufacture of the Mat, and thus will increase its value.Seal firmware thickened edge at the interval of more than 30 mm is impossible, since such an interval is not included in the construction of the Mat.When the thickness of the strips of the electrode is less than 0.5 mm is not ensured uniform compression beaded edges of the heater and reliable electrical contact is by consumption of steel in their manufacture. Not provided the necessary intimate contact of carbon fabric heater lower part of the shell of the heating element near the electrode due to the resulting scarp caused by excessive thickening of the strap.The size of the bar, parallel alastname edge of the heater, less than 30 mm increases the complexity of manufacturing the strips and the electrode Assembly.When the size of the specified side exceeding 400 mm not provided the necessary flexibility of the electrode.The distance between the bus and the transverse edge of the heater is less than 2 mm may lead to their contact, resulting due to loose electrical contact with the edge of the heater, the tire will overheat. The bus is located at a distance of less than 2 mm from the edge of the heater that is in the hot zone of the Mat, will also overheat. Thus the electrical resistance of the tire is increased, which leads to loss of power Mat and unevenness resulting temperature field on the heated surface. In addition, the bus will quickly fail due to oxidation of the metal wires.The specified distance of more than 40 mm will lead to a voltage drop in the parts of the electrodes from which snasti heater was applied. In addition, the weighting of the electrodes and the cost was applied.The heat storage layer of thickness less than 2 mm in the heat or shelter heat insulating element was applied will not provide enough thermal inertia, which will lead to overheating of the carbon cloth heater with its subsequent failure in the absence of contact of the heating element with the surface waterproofing carpet roll or mastic roof. If the specified thickness is also not achieved by maintaining a stable and uniform temperature area lower surface of the heating element from the beginning to the end of the warm-up waterproofing carpet warms the area of the roof.When the thickness of the heat storage layer is greater than 10 mm due to the considerable thermal inertia increases the time to reach the temperature required to soften the organic binder from the moment of connection to a source of electrical energy. There is also a weighting was applied and its appreciation.Reflective and conductive layer (metal foil) with a thickness of less than 0.02 mm is not able to provide heat transfer between parts of the heating element having a different temperature.In addition, the layer t is The layer thickness of more than 0.5 mm prevents the flexible insulating element was applied. There is also the cost was applied.Heat resistance of sheath heating element and adjacent the lower part of the casing of heat-insulating element less than 121oC leads to rapid destruction during operation was applied. Use the shell material with higher heat resistance 350oC will lead to a significant price increase was applied.The claimed invention meets the requirement of "novelty", as in the prior art unknown technical solution to the same destination with the declared set of essential features.A device for gluing roll materials - patent of Russian Federation N 2059776, the authors Ten Century. And., Limin, A. C., Edelsky A. B.The specified device contains a frame on which is installed through the ribs at the height of 150-170 mm from the lower edge of the frame - heating elements made in the form of a quartz tube with a spiral filament, which is a source of infrared radiation, as well as screen-reflector with built-in handles and slots to remove fumes. Quartz tube attached the invention advanced thermoelectric Mat designed to heat water shutoff carpet roll and mastic roofs using conductive heat transfer consists of two flexible - lower heating and the upper insulating elements, connected with the formation of an expansion joint. The sections of the heating element projecting beyond the edges of the heater-side electrodes are amplifiers stiffness. The amplifiers rigidity of the attachment of the edges of the insulating element by means of detachable connections with one or two automatically operating compensators.Required for short-term heating of the organic binder contained in waterproofing the carpet roll and mastic roofs, the specific power (2-4 kW/m2) and increased service life achieved was applied by the use of inorganic and organic, heat-resistant, flexible at any temperature outdoor air materials, their optimal combination, and arrangement in different temperature zones, as well as the bond between a firmware. The material of the lower part of the casing heating element has antiadhesion">The longitudinal edges of the heater of the carbon cloth, placed in a heating element, parallel to the warp threads of this fabric. The transverse edge of the heater parallel to the weft threads are thickening due to layering and made continuous along the entire length. Each bold edge of the heater still with a certain interval fixed part of the steel electrode of an improved design that provides reliable electrical contact with the heater wire electrical bus connecting portion of the electrode, capable of flowing through the heater sufficient amount of electric current without increasing the voltage of the power source.To reduce the current load on the electrical bus and to a more uniform distribution of current between electrodes of the parallel bus connected shunt of flexible electrical wires.At the place of production of roofing work it is possible to replace any damaged item Mata (heating and insulating elements, handles) through the use of detachable joints, and parts of the damaged items replaced was applied in the workshop.The size was applied ovate at any time of the year, as applied materials, which are brittle transition temperature of not higher than minus 35oC.The application was applied at low ambient temperatures is also provided the use of effective insulation and supply electric power. Possible use of the proposed was applied to heat waterproofing carpet roll and mastic roofs with a rough surface due to the flexibility and system of internal heat, which used thermal storage, as well as reflective and conductive layers was applied for uniform temperature distribution on the bottom of the shell, a heating element within 121-350oC.The use of low voltage and electrical insulating materials for sheath heating element provides electrical maintenance personnel, and the availability of pens was applied in the protection of personnel from thermal burns.The claimed invention meets inventive step, as in the prior art is not identified solutions with signs consistent with its hallmarks.The possibility of carrying out the invention is confirmed by the following.When the apostrophes HH mm. Thermomat consists of the lower heating element 1 and of the upper, shorter, but equal to the width of the insulating element 2, are separated by expansion seam 3 over the entire area of contact, as well as two expansion joints 4, two connecting wires 5 and the four knobs 6 for carrying the Mat.In Fig. 2 depicts the layered arrangement of the parts was applied. The lower heating element includes a flat rectangular electric heater 7 carbon fabric RTG-2, covered on two sides of thermo-resistant shell. The upper part of the casing 8 is made of fiberglass EZ-250-FRI, and the bottom 9 of steklopaketami f-4D-E. Between the heater and the upper part of the sheath heating element is the heat-accumulating layer 10 of asbestos cloth at-2. The heater, the heat storage layer, the lower and upper part of the casing heating element bonded between a flashing steklosetkami 11 brand BS-HH by its edges.On the upper and lower part of the casing of each of the two sections of heating element protruding beyond the edges of the heater-side electrodes attached two bent double rubber oil-petrol-plate thickness of 2 mm (THE 3801.4920-03-91) role is around end-to-end firmware protruding sections of heating element (Fig. 2 is not shown).The size of the heater 1800 x 540 mm the size of the longitudinal edges of the heater adopted a multiple of the distance between the joints of panels of roofing material (width 1000 mm and the normalized overlap in the roof of 70-100 mm). Carbon fabric is cut so that the warp threads are parallel to the longitudinal edges of the heater and weft threads parallel transverse edges, with the longitudinal edges of the heater coincide with the edges of the Mat.The transverse edge of the heater have thickening of three layers of carbon fabric the same width (25 mm) by double bending (Fig. 3).Each bold edge of the heater still with an interval of 5 mm fixed five equal parts steel electrode 13, each having a length of 120 mm Thick edges of the heater 23 between the parts of the electrodes is sealed with flashing steklosetkami 11.Each part of the electrode in the scan is of the form
similar to the letter "H" and consists of two identical parallel steel strips 24 which is wider than a thicker edge, and a thickness of 1 mm, connected by a jumper from the same material and folded in half so that the two parallel strips races the axle holes. Jumper in place of a bend is made in the form of a yoke 26, tightly squeezing the phase electrical bus 14.Thus, all parts of the electrode, as shown in Fig. 2, connected to a common electrical bus 14. Two extreme parts of each electrode is additionally connected between an electrical shunt 15, is laid along the transverse edge of the heater at a distance of 60 mm from it. Bus and shunt made of flexible copper stranded wire cross-sectional area of 10 mm2. The bus is made of bare (uninsulated) wire and shunt - from isolated.For connectivity was applied to a source of electrical energy to each tire attached single-flexible insulated electric wire 5, the cross-sectional area of 10 mm2and a length of 300 mmA heat insulating element consists of the top 16 and bottom 17 of the parts of the shell from fiberglass. Inside the shell layers placed reflective (conductive) layer 18 of aluminum foil, of a thickness of 0.1 mm and the insulation 19 of the eight layers steklomashevskogo canvas brand PSC-450. These layers and the membrane bonded between a flashing steklosetkami (Fig. the one edge of these elements are connected by two flexible joints 4 of the plate is oil and petrol resistant rubber with a thickness of 2 mm (THE 3801.4920-03-91). One edge of each plate sewn steklosetkami to the heat insulating element with the formation of the seam 11 so that the length of the insulating element with a sewn joints 20 mm greater than the length of the heating element for the formation of folds in the case of heat shrinkage of the insulating material element.The opposite edge of each plate is attached to the heating element by means of eight screws 20 (with nuts 21 and washers 22), with which it was applied also attached four of the handle 6 of the rubber cord rectangular h mm (GOST 6467-79) for carrying.Thermomat works in the following way:
A. If the repair roll and mastic roofs of bituminous materials by RF patent N 2085675 when the outside temperature is 10oC and the average wind speed 10 m/s to clean from snow and debris from the surface of damaged roof stack of thermoelectric Mat heating element down, avoiding the loose contact of the heating element warms the roof. If the roof surface ice cover its short warm up for 1-2 minutes before loosening ice (avoiding puddles), clean off the ice with a shovel.In the case of a repair roll is time, to the transverse edge of its heater coincided with the lowest placed of the overlapped joints. The transverse edge of the heater is determined by the thickening of the heating element to the touch.The location of the transverse edges of the heater can also be seen visually in his match with edge amplifier stiffness, facing the heater.This styling was applied necessary for the smooth removal of accumulations of water and steam present in the cavities of the roof, through unstuck joints of panels of the roll of material.In mastic roofs these joints are missing and thermomat placed arbitrarily.Thermomat connected with two flexible single-core cables with cross sectional area of 10 mm2to the secondary winding of the welding transformer brand TDM 401-U2 connected to an electrical AC voltage 380 CenturyThe electrodes of the heater was applied electrical current of 50 a and a voltage of 60 V is uniformly distributed between parts of the electrodes by means of an electrical tires and shunts. The current passing is heated in heater ISI the roof is transmitted primarily due to the conductive transfer.Heating of the heating element was applied to the softening temperature of the bitumen (t = 95oC) occurs in 7 minutes. A further rise of the temperature exceeding the softening temperature of the bitumen in 2 times (patent RF N 2085675) occurs in 12 minutes. At the same time is heated bitumen roofing materials. Bitumen under running was applied when the outside temperature is minus 10oC for 19 minutes softens in the roof to a depth of 10 mmThen thermomat carry by the handles on the adjacent area of the roof. When raising was applied together for four handles for transfer to another location is the deflection was applied as a result of his sagging under the force of gravity. When this heating element perceives tensile forces, and a heat insulating element is a compressive force.To minimize compressive efforts in shelter heat insulating element is an expansion joint 3 between the heat and the insulating elements (Fig. 1). Prevent any movement of the heat insulating element beyond the heating element flexible joints.The duration of subsequent cycles of heating of the roof is 17 minutes (instead of 19 min), since the heating element is already in Priya to 10 m/s, change the duration of heating is shown in the table.Final manufacturing operations to restore the water resistance of the roof (levelling and heating the softened material) is described in the patent of Russian Federation N 2085675.B. If the device only roll roofing using fused materials before laying was applied to the base of the roof is rolled, for example, surfaced roofing material, placing it down thickened epithelial layer of bitumen and with the necessary overlap of adjacent panels. As well as in the repair of roofs, thermomat stack with respect to the location of the joints of panels of roofing material.Warm-up have roof exercise to a depth of 5-7 mm, depending on the thickness surfaced roll roofing material. When the outdoor temperature +10oC and wind speed of 5 m/s heating of the rolled material and the surface of the roof, treated with a primer, to a temperature, two times higher than the softening temperature of roofing bitumen is carried out for 12 minutes After warm-up and removal was applied cloth surfaced roofing material rolled down to the base of the device for rolling on the patent of Russian Federation N 20186+5oC and wind speed of 5 m/s with the use of bitumen-water emulsions and pastes included thermomat placed on the freshly applied mastic layer 3 mm thick, reinforced with glass fiber or fiberglass, and heat it until the end of the evaporation of water from the mastic that is determined visually to stop steam from under thermo Mat that occurs within 3-5 minutes. While containing bitumen phase emulsion or paste fully impregnate strands of reinforcing material.Example 2. In Fig. 4 shows a General view was applied electric power of 3.0 kW and dimensions HH mm, different from thermo Mat shown in Fig. 1 and 2 the size and shape of the individual parts. Below are the main difference in design.Thermomat consists of the same width of the lower heater 1 and the upper insulating 2 elements.On the layered image was applied (Fig. 5) shows that one of the amplifiers stiffness 12 is attached by means of bolts 27 and nuts 21 with washers 22 (together with handles 6) equal in size to the edge of the insulating element, and another amplifier rigidity similarly attached only to the edge of the shell of the heat insulating element 28, which is the dominant element performs the role of flexible expansion joint with transverse fold 29, formed due to the difference in length of heating and insulating elements. In contrast was applied as described in example 1, thermomat depicted in Fig. 4 and 5, contains the heat-accumulating layer 10 of asbestos cloth AT-1, located between the lower part of the shell 17 of insulating element and the foil 18.The size of the heater h mm Last size can be obtained adjacent stacking two sheets of carbon cloth width of each 540 mmThe size of the edge of the heater 900 mm equal to the average distance between the joints of panels of roofing material. Also, there are differences in the design of parts of the steel electrodes. Each part of the electrode consists of two separate parallel steel strips 24 with a thickness of 1 mm, but not connected by a jumper. One of the bars (top) of equal width alastname edge of the heater (25 mm) and the width of the other equal to 65 mm wider strap one end with parallel narrow strap compresses the thickened edge of the heater, and at the other end, bent in the form of a yoke 26, compresses the plot electric bus edge (Fig. 6).All ten parts of each electrode (as shown in Fig. 5) attached to General electric is and with the middle part of the electrical shunt 15 (with the same cross-section), laid along the electrode at a distance of 60 mm from it outside of the heater.To connect was applied to a source of electrical energy to each tire attached single core flexible insulated wire 5 a cross-section of 20 mm2and a length of 3 meters.Thermomat according to example 2 is similar to thermo Mat of example 1 with the difference in the parameters of the electric current flowing through the heater in a thermo Mat. When the connection was applied to the electric circuit DC voltage of 30 V across the heater to an electric current of 100 A.Proof of compliance of the claimed invention the requirement of industrial applicability is as follows.The invention in its implementation is intended for use in the repair and installation of roll and mastic roofs.The possibility of the device is reflected by the information section of the application, confirming the possibility of carrying out the invention.The invention in its implementation is able to achieve a technical result, which is expressed in the improvement thermoelectromagnetic plots roll and mastic roofs to the flowable state of the organic binder, contained in them, at any time of the year. Thermomat has the specific power 2-4 kW/m2. thermo Mat saved flexibility, it is suitable for heating waterproofing carpet roll and mastic roofs with a rough surface. Thermomat has an increased service life, safe operation, it is possible to replace any damaged item (heating or insulating and pens) at the place of production of roofing work, and his parts in the Studio. The size was applied aligned with the distances between the joints of panels of material rolled roof.Thus, the claimed invention meets the requirement of industrial applicability. 1. Thermoelectric Mat for warming waterproofing carpet repair and the device rolled and mastic roofs, containing the lower heating element is attached to the upper heat insulating element, the heating element has a flat rectangular electric heater made of carbon fabric covered termoplastici shell, the lower part of which is intended for installation on heat design on two opposite edges of the heater are metal electrodes, razdelnyaysky energy, the insulating element is made of insulating material and aluminum foil and covered termoplastici shell, characterized in that the sections of the heating element projecting beyond the edges of the heater-side electrodes are amplifiers rigidity attached to the shell with internal or external side to the amplifiers rigidity is attached through one or two automatically operating joints with the help of detachable joints edge of the insulating element to form between him and the heating element of an expansion joint, the longitudinal edges of the heater parallel to the warp threads of the fabric and fit inside the Mata 0.1 - 70,0 mm from the edge, lateral edges of the heater parallel to the weft threads, have thickening width 8 - 50 mm due to the layering and
made continuous along the entire length, each bold edge of the heater still at intervals of 1 to 30 mm fixed part of the steel electrode, between which a thicker edge at the interval of 7 to 30 mm compacted firmware layers of carbon fabric, part of the electrode consists of two jaws thickened edge parallel strips with thickness of 0.5 - 4.0 mm, equal length (30 - 400 mm), but different or Odinak is from the heater electric bus, connecting portion of the electrode, and when the length of each electrode 300 - 2000 mm parallel them attached electrical shunts of the flexible electrical wiring, heating element between the heater and the upper part of the shell or on the lower part of the casing of heat-insulating element stacked heat storage layer with a thickness of 2 to 10 mm from a flexible heat-resistant insulating material with heat conductivity and heat capacity similar to that of the materials is heated waterproofing carpet, shelter heat insulating element under the insulating heat-conducting material is placed a layer thickness of 0.02 - 0.5 mm of aluminum foil, the upper and lower part of the casing heating element bonded firmware by its edges with the fixation of the inner layers, sheath heating element made of insulating material, the material of the bottom, in addition, is impervious to water, oil and tar and chemically resistant to the last two, and also has anti-adhesive properties, sheath heating element and adjacent the lower part of the shell of the heat insulating element have a heat resistance of 121 - 350oC.2. Thermoelectric Mat under item 1, characterized in that resortis material repairable or have roll roofing.3. Thermoelectric Mat under item 1, characterized in that the amplifiers stiffness heating element attached handles for carrying the Mat in a heated state.
FIELD: building, particularly for forming roof of flexible materials and for producing wall and cladding structures, for building agricultural product and equipment storage facilities, for erecting garages, hangars and repair stations.
SUBSTANCE: plant is installed on rotary platform mounted on truck chassis and has protective body with predetermined dimensions and adapted to shield plant from atmospheric precipitations. The body has closure with tip-up central part defined in longitudinal closure direction. The body is installed so that the body may rotate through 180° relative the chassis. The body has unwinding device adapted to unwind roll sheet material supplied by guiding rolls to mill having 9 pairs of shaping rolls arranged on rigid frame. Rigid frame is pivotally connected to rotary platform from unwinding device side to rotate frame with shaping mill up to 0-45° angle with the use of hydraulic drive. Roller conveyer is mounted on frame at ready building unit outlet and is used as lifting boom. Roller conveyer is formed as a number of girders composed of sections. Each girder section is made of thin-walled tubes. Total roller conveyer length is 15 m or more to deliver ready building members made as profiled strips at angle of 45° directly to roof of building having height up to 25 m without lifting mechanism usage. Steel guy ropes are used to increase roller conveyer fixation rigidity. Central body closure part is pivotally connected to hoisting boom to provide free lifting thereof through 0-45° angle.
EFFECT: reduced size, possibility to deliver building material strip directly to roof of the building and cut the strip into building members of predetermined length on the roof.
3 cl, 5 dwg