WO2022218155A1 - 三相电热膜 - Google Patents

三相电热膜 Download PDF

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Publication number
WO2022218155A1
WO2022218155A1 PCT/CN2022/083941 CN2022083941W WO2022218155A1 WO 2022218155 A1 WO2022218155 A1 WO 2022218155A1 CN 2022083941 W CN2022083941 W CN 2022083941W WO 2022218155 A1 WO2022218155 A1 WO 2022218155A1
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WO
WIPO (PCT)
Prior art keywords
phase
electrically connected
conductive heating
printing part
printing
Prior art date
Application number
PCT/CN2022/083941
Other languages
English (en)
French (fr)
Inventor
张运宏
周银妹
胡锦骊
陈德兵
栗明
李群力
Original Assignee
常州长青科技股份有限公司
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Publication of WO2022218155A1 publication Critical patent/WO2022218155A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/267—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an organic material, e.g. plastic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0014—Devices wherein the heating current flows through particular resistances
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material

Definitions

  • the invention relates to the technical field of electric heating films, in particular to a three-phase electric heating film.
  • the electric heating film in the electric heating heating system is a film product that can generate heat after being energized. membrane.
  • the heat generated by the electric heating film is sent into the space in the form of radiation, so that the human body can feel warm, and its comprehensive effect is better than the traditional convection heating method.
  • the heating and heating system is usually composed of a power supply, a thermostat, a connector, an insulating layer, an electric heating film and a finishing layer.
  • the power supply is connected to the electric heating film through the wire, and the electric energy is converted into heat energy.
  • Electric heating films are not only widely used in heating and heating systems of civil buildings such as residences, schools, shops, hospitals and office buildings, but also widely used in heating and heating systems of industrial buildings such as factories and warehouses.
  • the purpose of the present invention is to provide a three-phase inventive electric heating film with a simple structure and used in a three-phase power supply system.
  • the basic technical scheme to achieve the purpose of the present invention is: a three-phase electric heating film, the structure of which is characterized in that it includes an upper insulating layer, a heating core layer, a lower insulating layer and an electrical connecting piece assembly.
  • the heating core layer is wrapped between the upper insulating layer and the lower insulating layer.
  • the heating core layer includes a U-phase connection part, a V-phase connection part, a W-phase connection part and three conductive heating strips.
  • the three conductive heating strips are respectively called U-phase conductive heating strips and V-phase conductive heating strips according to the phases they are electrically connected to. strip and W-phase conductive heating strip.
  • the three-phase load of U-phase conductive heating strip, V-phase conductive heating strip and W-phase conductive heating strip and corresponding U-phase connection part, V-phase connection part and W-phase connection part adopts star connection or delta connection.
  • the electrical connecting piece assembly includes a U-phase electrical connecting piece, a V-phase electrical connecting piece and a W-phase electrical connecting piece.
  • the U-phase electrical connecting piece is fixedly connected and electrically connected to the portion of the U-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the V-phase electrical connecting piece is fixedly connected and electrically connected to the portion of the V-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the W-phase electrical connecting piece is fixedly connected and electrically connected to the portion of the W-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • a further technical solution based on the above-mentioned basic technical solution is: the three conductive heating strips are arranged in an S shape, and the distance between the parts parallel to each other in the front-rear direction is reduced from the inside to the outside as a whole.
  • the head end of the U-phase conductive heating strip is electrically connected to the U-phase connection part.
  • the head end of the V-phase conductive heating strip is electrically connected to the V-phase connection part.
  • the head end of the W-phase conductive heating strip is electrically connected to the W-phase connection part.
  • the ends of the U-phase conductive heating strip, the V-phase conductive heating strip, and the W-phase conductive heating strip are electrically connected to each other.
  • a neutral line connection part is also included.
  • the electrical connection piece assembly also includes a neutral electrical connection piece.
  • the ends of the U-phase conductive heating strips, the V-phase conductive heating strips and the W-phase conductive heating strips are all electrically connected to the zero line connection part through the electrical connection heating strips.
  • the neutral line electrical connection piece is fixedly connected and electrically connected to the corresponding parts of the neutral line connection part covered by the upper insulating layer and the lower insulating layer.
  • the lower insulating layer is sequentially provided with a first printing part, a second printing part and a third phase printing part from left to right.
  • the heating core layer also includes electrically connected heating strips. The electrically connected heating strips are arranged around the edges of the first printing part, the second printing part and the third printing part.
  • the first printing part, the second printing part and the third printing part are all provided with a U-phase connection part, a V-phase connection part and a W-phase connection part.
  • the U-phase connection part of the first printing part and the U-phase connection part of the second printing part are electrically connected.
  • the U-phase conductive heating strips are arranged on the front part of the first printing part and the front part of the second printing part in an S-shaped arrangement.
  • One end of the U-phase conductive heating strip of the first printing part is electrically connected to the U-phase connecting part of the first printing part, and the other end is electrically connected to the electric connection heating strip.
  • One end of the U-phase conductive heating strip of the second printing part is electrically connected to the U-phase connecting part of the second printing part, and the other end is electrically connected to the electric connection heating strip.
  • the W-phase connection part of the first printing part and the W-phase connection part of the second printing part are electrically connected.
  • the W-phase conductive heating strips are arranged in an S-shaped arrangement on the rear of the first printing part and the rear of the second printing part, and are symmetrically arranged with the U-phase conductive heating strips of the first printing part and the second printing part. .
  • One end of the W-phase conductive heating strip of the first printing part is electrically connected to the W-phase connecting part of the first printing part, and the other end is electrically connected to the electric connection heating strip.
  • One end of the W-phase conductive heating strip of the second printing part is electrically connected to the W-phase connecting part of the second printing part, and the other end is electrically connected to the electric connection heating strip.
  • V-phase connection part of the first printing part and the V-phase connection part of the second printing part are electrically connected, and the V-phase connection part of the second printing part and the V-phase connection part of the third printing part are electrically connected.
  • the V-phase conductive heating strips are arranged on the third printing part in an S-shaped arrangement, and are arranged symmetrically in the front and rear.
  • One end of the V-phase conductive heating strip located at the front of the third printing part is electrically connected to the V-phase connecting part of the first printing part, and the other end is electrically connected to the electric connection heating strip.
  • One end of the V-phase conductive heating strip located at the rear of the third printing part is electrically connected to the V-phase connecting part of the first printing part, and the other end is electrically connected to the electric connection heating strip.
  • the lower insulating layer is sequentially provided with a U-phase printing part, a V-phase printing part and a W-phase printing part from left to right.
  • the heating core layer also includes electrically connected heating strips. The electrically connected heating strips are continuously arranged along the rear edges of the U-phase printing part, the V-phase printing part and the W-phase printing part.
  • the U-phase printing part, the V-phase printing part, and the W-phase printing part are all provided with a U-phase connection part, a V-phase connection part, and a W-phase connection part.
  • the U-phase conductive heating strips are arranged on the U-phase printing part in an S-shaped arrangement.
  • the head end of the U-phase conductive heating strip is electrically connected to the U-phase connection part of the U-phase printing part, and the end of the U-phase conductive heating strip is electrically connected to the electric connection heating strip located in the phase printing part.
  • the V-phase connection part of the V-phase printing part is electrically connected to the V-phase connection part of the U-phase printing part.
  • the V-phase conductive heating strips are arranged in an S-shape on the V-phase printing part.
  • the head of the V-phase conductive heating strip is connected to the V-phase printing part.
  • the V-phase connection part of the phase printing part is electrically connected, and the end of the V-phase conductive heating strip is electrically connected to the electric connection heating strip located in the V-phase printing part.
  • the W-phase connection part of the V-phase printing part is electrically connected to the W-phase connection part of the U-phase printing part, and the W-phase connection part of the W-phase printing part is electrically connected to the W-phase connection part of the V-phase printing part.
  • the S-shaped arrangement is arranged on the W-phase printing part, the head end of the W-phase conductive heating strip is electrically connected to the W-phase connection part of the W-phase printing part, and the end of the W-phase conductive heating strip is electrically connected to the W-phase printing part.
  • the bars are electrically connected to the electrical connections.
  • a further technical solution based on the above-mentioned corresponding technical solutions is: further comprising a neutral line connection part.
  • the electrical connection piece assembly also includes a neutral electrical connection piece. The ends of the U-phase conductive heating strips, the V-phase conductive heating strips and the W-phase conductive heating strips are all electrically connected to the zero line connection part through the electrical connection heating strips.
  • the neutral line electrical connection piece is fixedly connected and electrically connected to the corresponding parts of the neutral line connection part covered by the upper insulating layer and the lower insulating layer.
  • a further technical solution based on the above basic technical solution is: the three conductive heating strips are arranged in an S shape.
  • One end of the U-phase conductive heating strip is electrically connected to the U-phase connection part, and the other end is electrically connected to the V-phase connection part.
  • One end of the V-phase conductive heating strip is electrically connected to the V-phase connection part, and the other end is electrically connected to the W-phase connection part.
  • One end of the W-phase conductive heating strip is electrically connected to the W-phase connection part, and the other end is electrically connected to the U-phase conductive heating strip.
  • the conductive heating strips are always kept parallel to each other.
  • the second basic technical solution to achieve the purpose of the present invention is: a three-phase electric heating film, the structure of which is characterized in that it includes an upper insulating layer, a heating core layer, a lower insulating layer and an electrical connecting piece assembly.
  • the heating core layer is wrapped between the upper insulating layer and the lower insulating layer.
  • the heating core layer includes a U-phase connection part, a V-phase connection part, a W-phase connection part, an R-phase connection part, an S-phase connection part, a T-phase connection part, and three conductive heating strips, and the three conductive heating strips are electrically connected according to the phases.
  • the difference is called U-phase conductive heating strip, V-phase conductive heating strip and W-phase conductive heating strip.
  • the three conductive heating strips are arranged in an S shape.
  • the head end of the U-phase conductive heating strip is electrically connected to the U-phase connection portion, and the end thereof is electrically connected to the R-phase connection portion.
  • the head end of the V-phase conductive heating strip is electrically connected to the V-phase connection part, and the end of the V-phase conductive heating strip is electrically connected to the S-phase connection part.
  • the head end of the W-phase conductive heating strip is electrically connected to the W-phase connection portion, and the end thereof is electrically connected to the T-phase connection portion.
  • the electrical connecting piece assembly includes a U-phase electrical connecting piece, a V-phase electrical connecting piece, a W-phase electrical connecting piece, an R-phase electrical connecting piece, an S-phase electrical connecting piece and a T-phase electrical connecting piece.
  • the U-phase electrical connecting piece is fixedly connected and electrically connected to the portion of the U-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the V-phase electrical connecting piece is fixedly connected and electrically connected to the portion of the V-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the W-phase electrical connecting piece is fixedly connected and electrically connected to the portion of the W-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the R-phase electrical connecting piece is fixedly connected and electrically connected to the corresponding portion of the R-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the S-phase electrical connecting piece is fixedly connected and electrically connected to the corresponding part of the S-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the T-phase electrical connecting piece is fixedly connected and electrically connected to the corresponding portion of the T-phase connecting portion covered by the upper insulating layer and the lower insulating layer.
  • the lower insulating layer is sequentially provided with a U-phase printing part, a V-phase printing part and a W-phase printing part from right to left.
  • the U-phase connection part of the W-phase printing part is electrically connected to the U-phase connection part of the V-phase printing part, and the U-phase connection part of the V-phase printing part is electrically connected to the U-phase connection part of the U-phase printing part.
  • the R-phase connection part of the W-phase printing part is electrically connected to the R-phase connection part of the V-phase printing part, and the R-phase connection part of the V-phase printing part is electrically connected to the R-phase connection part of the U-phase printing part.
  • the U-phase conductive heating strips are arranged in an S-shape on the U-phase printing part.
  • the head end of the U-phase conductive heating strip is electrically connected to the U-phase connecting part of the U-phase printing part.
  • the R-phase connection part of the part is electrically connected.
  • the V-phase connection portion of the W-phase printed portion is electrically connected to the V-phase connection portion of the V-phase printed portion.
  • the S-phase connection portion of the W-phase printed portion is electrically connected to the S-phase connection portion of the V-phase printed portion.
  • the V-phase conductive heating strips are arranged on the V-phase printing part in an S-shaped arrangement, the head end of the V-phase conductive heating strip is electrically connected to the V-phase connecting part of the V-phase printing part, and the end of the V-phase conductive heating strip is The S-phase connection part of the part is electrically connected.
  • the W-phase conductive heating strips are arranged in an S-shape on the W-phase printing part.
  • the head end of the W-phase conductive heating strip is electrically connected to the W-phase connection part of the W-phase printing part.
  • the T-phase connection part of the part is electrically connected.
  • the present invention has the following beneficial effects: (1)
  • the three-phase electric heating film of the present invention has a simple structure, and by integrating the three conductive heating strips corresponding to the three structures through star or delta connection, it becomes a brand-new type of three-phase electric heating film that can adopt three-phase electric heating. Powered electric heating film.
  • the three-phase electric heating film of the present invention is convenient to connect, the difference of three-phase power consumption is small ( ⁇ 1%), and is suitable for occasions with high requirements on three-phase balance, such as the DC inverter three-phase power supply system of rail transit vehicles.
  • the three-phase electric heating film of the present invention also breaks through the traditional method of uniform distribution, adopts a new design concept, and adjusts the power of the electric heating film according to the use environment of the electric heating film and the heat transfer and heat dissipation of the heated surface (floor). Density distribution (by adjusting the spacing and/or the conductive cross-sectional area of the conductive heating strip), when the heat transfer and heat dissipation are fast, the temperature of the heated surface presents a large gradient, the central temperature of the electrothermal film is high, and the surrounding temperature is low.
  • the power density around the electric heating film reduces the power density in the middle of the electric heating film, ensures that the overall temperature distribution of the electric heating film is uniform, prevents the local temperature from being too high, and prolongs the service life and safety of use.
  • the heating core layer is made of metal material, it is purely resistive and the heating efficiency is over 99%.
  • the metal resistivity has a positive temperature coefficient.
  • the temperature of the electric heating film rises to a certain level, the resistance increases and the power decreases, which limits the further rise of the temperature of the electric heating film and quickly reaches the equilibrium state. It has a certain self-limiting temperature characteristic and is safe to use. Sex is greatly improved.
  • Embodiment 1 of the present invention achieves uniform temperature distribution by changing the spacing between adjacent parts of the heating parts that are parallel to each other.
  • the heat can be radiated to the inside to ensure that the middle part reaches the set temperature; the surrounding heat dissipation is fast, the distance between the heating parts is small, and the calorific value is large. temperature.
  • the continuous-stretch three-phase electric heating film of the present invention has a width in the left-right direction corresponding to the floor width of the rail vehicle, which can reduce the workload of construction and improve the laying efficiency; the single-sheet three-phase electric heating film is more flexible. Good, suitable for local laying construction.
  • the heating part of the three-phase electric heating film of the present invention adopts the serpentine S distribution mode, and the current directions of the parallel parts of the adjacent heating strips are opposite. According to the right-hand spiral rule, the magnetic fields generated by the heating strips on the electric heating film will cancel each other out. , reduce the interference to other equipment on the rail vehicle, and further improve the reliability of use.
  • FIG. 1 is a schematic structural diagram of a three-phase three-wire electric heating film according to Embodiment 1 of the present invention when a star connection is adopted.
  • FIG. 2 is a schematic diagram of the layer structure of the three-phase three-wire electrothermal film according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural diagram of the three-phase three-wire electric heating film according to the second embodiment of the present invention when the star connection is adopted.
  • FIG. 4 is a schematic structural diagram of the three-phase three-wire three-continuous electric heating film according to the third embodiment of the present invention when the star connection is adopted.
  • FIG. 5 is a schematic structural diagram of the three-phase, three-wire, three-continuous-span electric heating film according to Embodiment 4 of the present invention when star connection is adopted.
  • FIG. 6 is a schematic structural diagram of the three-phase three-wire electric heating film according to the fifth embodiment of the present invention when the delta connection is adopted.
  • FIG. 7 is a schematic structural diagram of a three-phase four-wire electrothermal film according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic structural diagram of a three-phase four-wire electrothermal film according to Embodiment 7 of the present invention.
  • FIG. 9 is a schematic structural diagram of a three-phase, four-wire, three-continuous electric heating film according to Embodiment 8 of the present invention.
  • FIG. 10 is a schematic structural diagram of a three-phase three-wire electrothermal film according to Embodiment 9 of the present invention.
  • FIG. 11 is a schematic structural diagram of a three-phase, three-wire, three-continuous electric heating film according to Embodiment 10 of the present invention.
  • FIG. 1 The orientation of the present invention is described in accordance with the orientation shown in FIG. 1 , that is, the up, down, left, and right directions shown in FIG. 1 are the described rear, front, left, and right directions, the side facing FIG. 1 is upward, and the side away from FIG. .
  • the terms “installation” and “connection” should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components.
  • installation and “connection” should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components.
  • connection should be understood in a broad sense, for example, it
  • the present embodiment 1 is a three-phase three-wire single-sheet three-phase electric heating film, and the three-phase load is connected in a star shape.
  • the three-phase electric heating film of this embodiment 1 includes an upper insulating layer 1 , a heating core layer 2 , a lower insulating layer 3 and an electrical connection sheet assembly 4 .
  • the materials of the upper insulating layer 1 and the lower insulating layer 3 are the same PET (PET is the abbreviation of Polyethylene terephthalate in English, PET or PETP for short) or PI (PI is the abbreviation of Polyimide in English, PI is commonly known as polyimide in Chinese, and its molecular structure contains acyl It is made of aromatic heterocyclic macromolecule compound of imino chain unit) or epoxy resin material.
  • Corresponding parts of the upper insulating layer 1 are fixed on the lower insulating layer 3 by hot-melt adhesive thermocompression bonding from top to bottom, and the heating core layer 2 is wrapped between the upper insulating layer 1 and the lower insulating layer 3 .
  • the upper insulating layer 1 and the lower insulating layer 3 have the same shape and size.
  • the heating core layer 2 includes a U-phase connection part 21-1, a V-phase connection part 22-1, a W-phase connection part 23-1 and three conductive heating strips.
  • the U-phase connection part 21-1, the V-phase connection part 22-1, the W-phase connection part 23-1 and the three conductive heating strips are all made of conductive heating paint (conductive heating paint is the prior art) printed on the lower insulation by screen printing method
  • the upper side of the layer 3 or the conductive heating strip is made of metal foil glued on the upper side of the lower insulating layer 3 by printing and etching.
  • the conductive heating strip in this embodiment is glued and composited on the upper side of the lower insulating layer 3
  • the aluminum foil on the top is made by printing and etching method, and the three conductive heating strips are arranged in an S shape. In the parts parallel to each other in the front and rear directions, the overall spacing is reduced from the inside to the outside.
  • the heat Q is proportional to the electric power P, proportional to the time, and inversely proportional to the square of the radius.
  • the coefficient k of the formula is related to the heat dissipation conditions, and the range of k is 0-1.
  • adjust the power density distribution of the electric heating film by adjusting the spacing and/or the conductive cross-sectional area of the conductive heating strips, this embodiment is achieved by adjusting the distance between each other.
  • the temperature of the heated surface presents a large gradient
  • the central temperature of the electrothermal film is high
  • the peripheral temperature is low.
  • the heated surface temperature is more uniform.
  • the head end of the U-phase conductive heating strip 21 is electrically connected to the U-phase connection portion 21-1.
  • the head end of the V-phase conductive heating strip 22 is electrically connected to the V-phase connection portion 22-1.
  • the head end of the W-phase conductive heating strip 23 is electrically connected to the W-phase connection portion 23-1.
  • the ends of the U-phase conductive heating strip 21 , the V-phase conductive heating strip 22 and the W-phase conductive heating strip 23 are electrically connected to each other.
  • the electrical connecting piece assembly 4 includes a U-phase electrical connecting piece 4-1, a V-phase electrical connecting piece 4-2 and a W-phase electrical connecting piece 4-3.
  • the U-phase electrical connecting piece 4-1, the V-phase electrical connecting piece 4-2 and the W-phase electrical connecting piece 4-3 are all made of copper material.
  • the U-phase electrical connecting piece 4-1 is fixedly connected by piercing and crimping, and is electrically connected to the portion of the U-phase connecting portion 21-1 covered by the upper insulating layer 1 and the lower insulating layer 3, and pierces the lower insulating layer 3 downward. Form a riveted fixed connection.
  • the V-phase electrical connecting piece 4-2 is fixedly connected by piercing and crimping, and is electrically connected to the portion of the V-phase connecting portion 22-1 covered by the upper insulating layer 1 and the lower insulating layer 3, and pierces the lower insulating layer 3 downward. Form a riveted fixed connection.
  • the W-phase electrical connecting piece 4-3 is fixedly connected by piercing and crimping, and is electrically connected to the part of the W-phase connecting portion 23-1 covered by the upper insulating layer 1 and the lower insulating layer 3, and pierces the lower insulating layer 3 downward. Form a riveted fixed connection.
  • the electric heating film of the present invention can be installed in the corresponding floor or wallboard, and the U-phase electrical connecting piece 4-1, the V-phase electrical connecting piece 4-2 and the W-phase electrical connecting piece 4-3 pass through corresponding wires respectively. It is electrically connected with the U-phase, V-phase and W-phase of the three-phase power supply.
  • the electrical connection piece 4-3 and the electrical connection parts of the corresponding wires are all sealed with waterproof sealant.
  • the second embodiment is a three-phase three-wire single-sheet three-phase electric heating film.
  • the remaining parts of this embodiment are the same as those of Embodiment 1, except that the parts of the U-phase conductive heating strips 21, V-phase conductive heating strips 22 and W-phase conductive heating strips 23 located in the middle of the electric heating film are parallel to each other. The spacing between them is always consistent, and the spacing between the parts located on the left and right sides that are parallel to each other decreases from the inside to the outside.
  • the third embodiment is a three-phase three-wire continuous tension type three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 1, except that the lower insulating layer 3 is provided with a U-phase printed part 3-1, a V-phase printed part 3-2 and a W-phase printed part 3- from left to right in sequence.
  • the heating core layer 2 also includes an electrically connected heating strip 25 .
  • the electrical connection heating strips 25 are continuously arranged along the rear edges of the U-phase printed portion 3-1, the V-phase printed portion 3-2, and the W-phase printed portion 3-3.
  • the U-phase printing part 3-1, the V-phase printing part 3-2, and the W-phase printing part 3-3 are all provided with a U-phase connection part 21-1, a V-phase connection part 22-1, and a W-phase connection part 23-1.
  • the U-phase conductive heating strips 21 are arranged on the U-phase printing part 3-1 in an S-shaped arrangement.
  • the head end of the U-phase conductive heating strip 21 is electrically connected to the U-phase connecting part 21-1 of the U-phase printing part 3-1, and the end of the U-phase conductive heating strip 21 is electrically connected to the heating strip located in the U-phase printing part 3-1. 25 electrical connections.
  • the V-phase connection part 22-1 of the V-phase printing part 3-2 is electrically connected to the V-phase connection part 22-1 of the U-phase printing part 3-1, and the V-phase conductive heating strips 22 are arranged in an S-shape and arranged on the V-phase printing part 22-1.
  • the head end of the V-phase conductive heating strip 22 is electrically connected to the V-phase connection part 22-1 of the V-phase printing part 3-2, and the end of the V-phase conductive heating strip 22 is connected to the V-phase printing part 3-2.
  • the electrical connection of 2 The heating strip 25 is electrically connected.
  • the W-phase connection part 23-1 of the V-phase printing part 3-2 is electrically connected to the W-phase connection part 23-1 of the U-phase printing part 3-1, and the W-phase connection part 23-1 of the W-phase printing part 3-3 is electrically connected to the W-phase connection part 23-1 of the U-phase printing part 3-1.
  • the W-phase connecting part 23-1 of the V-phase printing part 3-2 is electrically connected, and the W-phase conductive heating strips 23 are arranged in an S-shape on the W-phase printing part 3-3.
  • the head end of the W-phase conductive heating strip 23 is connected to the The W-phase connection part 23-1 of the W-phase printed part 3-3 is electrically connected, and the end of the W-phase conductive heating strip 23 is electrically connected to the electrically connected heating strip 25 located in the W-phase printed part 3-3.
  • the fourth embodiment is a three-phase three-wire continuous tension type three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 1, except that the lower insulating layer 3 is sequentially provided with a first printing part 3a, a second printing part 3b and a third phase printing part 3c from left to right.
  • the heating core layer 2 also includes an electrically connected heating strip 25 .
  • the electrical connection heating strips 25 are arranged around the edges of the first printed part 3a, the second printed part 3b and the third printed part 3c.
  • the first printing part 3a, the second printing part 3b, and the third printing part 3c are all provided with a U-phase connection part 21-1, a V-phase connection part 22-1, and a W-phase connection part 23-1.
  • the U-phase connection part 21-1 of the first printing part 3a is electrically connected to the U-phase connection part 21-1 of the second printing part 3b; the U-phase conductive heating strips 21 are arranged in an S-shape before the first printing part 3a. part and the front part of the second printing part 3b.
  • One end of the U-phase conductive heating strip 21 of the first printing part 3a is electrically connected to the U-phase connecting part 21-1 of the first printing part 3a, and the other end is electrically connected to the electric connection heating strip 25;
  • One end of the conductive heating bar 21 is electrically connected to the U-phase connecting portion 21 - 1 of the second printing portion 3 b , and the other end is electrically connected to the electrically connected heating bar 25 .
  • the W-phase connection part 23-1 of the first printing part 3a and the W-phase connection part 23-1 of the second printing part 3b are electrically connected; On the rear part of the first printing part 3a and the second printing part 3b, and symmetrically arranged with the U-phase conductive heating strips 21 of the first printing part 3a and the second printing part 3b; the W-phase conductive heating strips 23 of the first printing part 3a One end is electrically connected to the W-phase connection part 23-1 of the first printing part 3a, and the other end is electrically connected to the electric connection heating strip 25; one end of the W-phase conductive heating strip 23 of the second printing part 3b is electrically connected to the second printing part 3b.
  • the W-phase connection portion 23 - 1 is electrically connected, and the other end is electrically connected to the electrical connection heating strip 25 .
  • the V-phase connection part 22-1 of the first printing part 3a and the V-phase connection part 22-1 of the second printing part 3b are electrically connected, and the V-phase connection part 22-1 of the second printing part 3b and the third printing part 3c are electrically connected.
  • the V-phase connection part 22-1 is electrically connected;
  • the V-phase conductive heating strips 22 are arranged on the third printing portion 3c in an S-shaped arrangement, and are arranged symmetrically in the front and rear.
  • One end of the V-phase conductive heating strip 22 located at the front of the third printing part 3c is electrically connected to the V-phase connecting part 22-1 of the first printing part 3a, and the other end is electrically connected to the electric connection heating strip 25.
  • One end of the V-phase conductive heating strip 22 located at the rear of the third printing part 3c is electrically connected to the V-phase connecting part 22-1 of the first printing part 3a, and the other end is electrically connected to the electric connection heating strip 25.
  • the fifth embodiment is a three-phase three-wire single-sheet three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 3, and the difference is that the three-phase load in this embodiment is connected in a delta.
  • One end of the U-phase conductive heating strip 21 is electrically connected to the U-phase connection part 21-1, and the other end is electrically connected to the V-phase connection part 22-1;
  • one end of the V-phase conductive heating strip 22 is electrically connected to the V-phase connection part 22-1 , the other end is electrically connected to the W-phase connection part 23-1;
  • one end of the W-phase conductive heating strip 23 is electrically connected to the W-phase connection part 23-1, and the other end is electrically connected to the U-phase conductive heating strip 21.
  • the conductive heating strips are always kept parallel to each other.
  • this embodiment 6 is a three-phase four-wire single-sheet three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 1, and the difference lies in that the neutral line connecting part 24 is also included.
  • the neutral line connection portion 24 is electrically connected to the electrical connection heating strip 25 .
  • the electrical connection piece assembly 4 also includes a neutral line electrical connection piece 4-5. The ends of the U-phase conductive heating strip 21 , the V-phase conductive heating strip 22 and the W-phase conductive heating strip 23 are all electrically connected to the neutral line connecting portion 24 through the electrical connection heating strip 25 .
  • the neutral line electrical connection piece 4-5 is fixedly connected by puncture and crimping and is electrically connected to the corresponding part of the neutral line connection part 24 covered by the upper insulating layer 1 and the lower insulating layer 3, and is formed by piercing the lower insulating layer 3 downward. Riveted fixed connection.
  • the seventh embodiment is a three-phase four-wire single-sheet three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 2, and the difference lies in that it also includes a neutral line connecting part 24 .
  • the neutral line connection portion 24 is electrically connected to the electrical connection heating strip 25 .
  • the electrical connection piece assembly 4 also includes a neutral line electrical connection piece 4-5. The ends of the U-phase conductive heating strip 21 , the V-phase conductive heating strip 22 and the W-phase conductive heating strip 23 are all electrically connected to the neutral line connecting portion 24 through the electrical connection heating strip 25 .
  • the neutral line electrical connection piece 4-5 is fixedly connected by puncture and crimping and is electrically connected to the corresponding part of the neutral line connection part 24 covered by the upper insulating layer 1 and the lower insulating layer 3, and is formed by piercing the lower insulating layer 3 downward. Riveted fixed connection.
  • this embodiment 8 is a three-phase four-wire continuous tension type three-phase electric heating film.
  • the rest of the present embodiment is the same as that of the third embodiment, and the difference lies in that the neutral line connecting part 24 is also included.
  • the neutral line connection portion 24 is electrically connected to the electrical connection heating strip 25 .
  • the electrical connection piece assembly 4 also includes a neutral line electrical connection piece 4-5.
  • the neutral line electrical connection piece 4-5 is fixedly connected by puncture and crimping and is electrically connected to the corresponding part of the neutral line connection part 24 covered by the upper insulating layer 1 and the lower insulating layer 3, and is formed by piercing the lower insulating layer 3 downward. Riveted fixed connection.
  • the neutral line connecting portion 24 is continuously provided on the U-phase printing portion 3-1, the V-phase printing portion 3-2, and the W-phase printing portion 3-3.
  • the end of the U-phase conductive heating strip 21 is electrically connected to the electrical connection heating strip 25 located in the U-phase printed part 3-1.
  • the ends of the V-phase conductive heating strips 22 are electrically connected to the electrically connected heating strips 25 located in the V-phase printed part 3-2.
  • the ends of the W-phase conductive heating strips 23 are electrically connected to the electrically connected heating strips 25 located in the W-phase printed part 3-3.
  • this embodiment 9 is an externally connected single-sheet type three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 1, except that the heating core layer 2 further includes an R-phase connection part 21-2, an S-phase connection part 22-2 and a T-phase connection part 23-2.
  • the electrical connecting piece assembly 4 further includes an R-phase electrical connecting piece 4-6, an S-phase electrical connecting piece 4-7 and a T-phase electrical connecting piece 4-8.
  • the R-phase electrical connecting piece 4-6 is fixedly connected by piercing and crimping, and is electrically connected to the corresponding part of the R-phase connecting portion 21-2 covered by the upper insulating layer 1 and the lower insulating layer 3, and pierces the lower insulating layer downward. 3 to form a riveted fixed connection.
  • the S-phase electrical connecting piece 4-7 is fixedly connected by piercing and crimping, and is electrically connected to the corresponding part of the S-phase connecting portion 22-2 covered by the upper insulating layer 1 and the lower insulating layer 3, and pierces the lower insulating layer downward. 3 to form a riveted fixed connection.
  • the T-phase electrical connecting pieces 4-8 are fixedly connected by piercing and crimping, and are electrically connected to the corresponding parts of the T-phase connecting portion 23-2 covered by the upper insulating layer 1 and the lower insulating layer 3, and pierce the lower insulating layer downward. 3 to form a riveted fixed connection.
  • the end of the U-phase conductive heating strip 21 is electrically connected to the R-phase connection portion 21-2.
  • the end of the V-phase conductive heating strip 22 is electrically connected to the S-phase connection portion 22-2.
  • the end of the W-phase conductive heating strip 23 is electrically connected to the T-phase connection portion 23-2.
  • this embodiment 10 is an externally connected continuous tension type three-phase electric heating film.
  • the rest of this embodiment is the same as that of Embodiment 3, except that the lower insulating layer 3 is provided with a U-phase printing part 3-1, a V-phase printing part 3-2 and a W-phase printing part 3-1 in sequence from right to left 3.
  • the heating core layer 2 further includes an R-phase connection part 21-2, an S-phase connection part 22-2 and a T-phase connection part 23-2.
  • the U-phase printing part 3-1, the V-phase printing part 3-2, and the W-phase printing part 3-3 are all provided with an R-phase connection part 21-2, an S-phase connection part 22-2, and a T-phase connection part 23-2.
  • the electrical connecting piece assembly 4 further includes an R-phase electrical connecting piece 4-6, an S-phase electrical connecting piece 4-7 and a T-phase electrical connecting piece 4-8.
  • the R-phase electrical connecting piece 4-6 is fixedly connected by piercing and crimping and is electrically connected to the corresponding part of the R-phase connecting part 21-2 covered by the upper insulating layer 1 and the lower insulating layer 3 of the W-phase printed part 3-3 , and pierce the lower insulating layer 3 downward to form a riveted fixed connection.
  • the S-phase electrical connecting piece 4-7 is fixedly connected by piercing and crimping and is electrically connected to the corresponding part of the S-phase connecting part 22-2 covered by the upper insulating layer 1 and the lower insulating layer 3 of the W-phase printed part 3-3 , and pierce the lower insulating layer 3 downward to form a riveted fixed connection.
  • the T-phase electrical connecting pieces 4-8 are fixedly connected by piercing and crimping and are electrically connected to the corresponding parts of the T-phase connecting portion 23-2 covered by the upper insulating layer 1 and the lower insulating layer 3 located on the W-phase printed portion 3-3. , and pierce the lower insulating layer 3 downward to form a riveted fixed connection.
  • the U-phase connection part 21-1 of the W-phase printing part 3-3 is electrically connected to the U-phase connection part 21-1 of the V-phase printing part 3-2, and the U-phase connection part 21-1 of the V-phase printing part 3-2 is electrically connected to the U-phase connection part 21-1 of the V-phase printing part 3-2.
  • the U-phase connection portion 21-1 of the U-phase printed portion 3-1 is electrically connected.
  • the R-phase connecting portion 21-2 of the W-phase printed portion 3-3 is electrically connected to the R-phase connecting portion 21-2 of the V-phase printed portion 3-2, and the R-phase connecting portion 21-2 of the V-phase printed portion 3-2 is electrically connected to the R-phase connecting portion 21-2 of the V-phase printed portion 3-2.
  • the R-phase connection portion 21-2 of the U-phase printed portion 3-1 is electrically connected.
  • the U-phase conductive heating strips 21 are arranged on the U-phase printing part 3-1 in an S-shape, and the head end of the U-phase conductive heating strips 21 is electrically connected to the U-phase connecting part 21-1 of the U-phase printing part 3-1.
  • the end of the U-phase conductive heating strip 21 is electrically connected to the R-phase connection portion 21-2 of the U-phase printed portion 3-1.
  • the V-phase connection portion 22-1 of the W-phase printed portion 3-3 is electrically connected to the V-phase connection portion 22-1 of the V-phase printed portion 3-2.
  • the S-phase connection portion 22-2 of the W-phase printed portion 3-3 is electrically connected to the S-phase connection portion 22-2 of the V-phase printed portion 3-2.
  • the V-phase conductive heating strips 22 are arranged in an S-shape on the V-phase printing part 3-2, and the head end of the V-phase conductive heating strip 22 is electrically connected to the V-phase connecting part 22-1 of the V-phase printing part 3-2, The end of the V-phase conductive heating strip 22 is electrically connected to the S-phase connection portion 22-2 of the V-phase printed portion 3-2.
  • the W-phase conductive heating strips 23 are arranged in an S-shape on the W-phase printing part 3-3, and the head end of the W-phase conductive heating strip 23 is electrically connected to the W-phase connecting part 23-1 of the W-phase printing part 3-3, The distal end of the W-phase conductive heating strip 23 is electrically connected to the T-phase connection portion 23-2 of the W-phase printed portion 3-3.

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  • Resistance Heating (AREA)

Abstract

一种三相电热膜，包括上绝缘层（1）、发热芯层（2）、下绝缘层（3）和电连接片组件（4）。发热芯层（2）被包覆于上绝缘层（1）和下绝缘层（3）之间。通过把3个结构相应的导电发热条（21，22，23）通过星形或三角形连接集成在一起，成为一种能采用三相供电的电热膜。三相电热膜连接方便、三相功耗差异小，适用于对三相平衡要求较高的场合，如轨道交通车辆直流逆变三相供电系统。

Description

三相电热膜 技术领域
本发明涉及电热膜技术领域，具体是一种三相电热膜。
背景技术
电加热取暖系统中的电热膜是一种通电后能发热的膜类产品，由可导电的导电涂料、金属载流条经加工、热压在绝缘聚酯薄膜间制成,属于低温辐射的电热膜。电热膜产生热量以辐射的形式送入空间，使人体和感受到温暖，其综合效果优于传统的对流供暖方式。加热取暖系统通常由电源、温控器、连接件、绝缘层、电热膜及饰面层构成。电源经导线连通电热膜,将电能转化为热能。电热膜不仅广泛应用于住宅、学校、商店、医院和办公楼等民用建筑的加热取暖系统，而且还广泛应用于工厂厂房和仓储等工业建筑的加热取暖系统中。现在还应用到了轨道车辆的加热取暖系统中以及道路融雪等领域，电热膜具有广阔的用前景。但是普通的家庭用的电热膜是用的220V的单相电，有些场合(如工厂、轨道车辆等)使用的是三相电，220V的单相电的电热膜会影响三相平衡。
发明内容
本发明的目的是提供一种结构简单，在三相供电系统场合下使用的三相发明电热膜。
实现本发明目的的基本技术方案是：一种三相电热膜，其结构特点是：包括上绝缘层、发热芯层、下绝缘层和电连接片组件。发热芯层被包覆于上绝缘层和下绝缘层之间。
发热芯层包括U相连接部、V相连接部、W相连接部和三条导电发热条，三条导电发热条按其所电连接的相位的不同分别称为U相导电发热条、V相导电发热条和W相导电发热条。U相导电发热条、V相导电发热条和W相导电发热条与相应的U相连接部、V相连接部和W相连接部的三相负载采用星形连接或三角形连接。电连接片组件包括U相电连接片、V相电连接片和W相电连接片。U相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的U相连接部的部位上。V相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的V相连接部的部位上。W相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的W相连接部的部位上。
以上述基本技术方案为基础的进一步技术方案是：三条导电发热条呈S形设置，在前后方向上相互平行的部分，整体上间距有内至外呈减小设置。U相导电发热条的 首端与U相连接部电连接。V相导电发热条的首端与V相连接部电连接。W相导电发热条的首端与W相连接部电连接。U相导电发热条、V相导电发热条和W相导电发热条的末端相互电连接。
以上述进一步技术方案为基础的技术方案是：还包括零线连接部。电连接片组件还包括零线电连接片。U相导电发热条、V相导电发热条和W相导电发热条的末端均通过电连接发热条与零线连接部电连接。零线电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的零线连接部的相应部位上。
以上述进一步技术方案为基础的技术方案是：下绝缘层从左至右依次设有第一印刷部、第二印刷部和第三相印刷部。发热芯层还包括电连接发热条。电连接发热条围绕第一印刷部、第二印刷部和第三印刷部的边沿设置。
第一印刷部、第二印刷部和第三印刷部均设有U相连接部、V相连接部和W相连接部。
第一印刷部的U相连接部和第二印刷部的U相连接部电连接。U相导电发热条呈S型排布设置在第一印刷部的前部和第二印刷部的前部上。第一印刷部的U相导电发热条的一端与第一印刷部的U相连接部电连接，另一端与电连接发热条电连接。第二印刷部的U相导电发热条的一端与第二印刷部的U相连接部电连接，另一端与电连接发热条电连接。
第一印刷部的W相连接部和第二印刷部的W相连接部电连接。W相导电发热条呈S型排布设置在第一印刷部的后部和第二印刷部的后部上，且与第一印刷部和第二印刷部的U相导电发热条呈前后对称设置。第一印刷部的W相导电发热条的一端与第一印刷部的W相连接部电连接，另一端与电连接发热条电连接。第二印刷部的W相导电发热条的一端与第二印刷部的W相连接部电连接，另一端与电连接发热条电连接。
第一印刷部的V相连接部和第二印刷部的V相连接部电连接，第二印刷部的V相连接部和第三印刷部的V相连接部和电连接。
V相导电发热条呈S型排布设置在第三印刷部上，呈前后对称设置。位于第三印刷部的前部的V相导电发热条的一端与第一印刷部的V相连接部电连接，另一端与电连接发热条电连接。位于第三印刷部的后部的V相导电发热条的一端与第一印刷部的V相连接部电连接，另一端与电连接发热条电连接。
以上述进一步技术方案为基础的技术方案是：下绝缘层从左至右依次设有U相印刷部、V相印刷部和W相印刷部。发热芯层还包括电连接发热条。电连接发热条沿U相印刷部、V相印刷部和W相印刷部的后边沿连续设置。U相印刷部、V相印刷部和W 相印刷部均设有U相连接部、V相连接部和W相连接部。
U相导电发热条呈S型排布设置在U相印刷部上。U相导电发热条的首端与U相印刷部的U相连接部电连接，U相导电发热条的末端与位于相印刷部的电连接发热条电连接。
V相印刷部的V相连接部与U相印刷部的V相连接部电连接，V相导电发热条呈S型排布设置在V相印刷部上，V相导电发热条的首端与V相印刷部的V相连接部电连接，V相导电发热条的末端与位于V相印刷部的电连接发热条电连接。
V相印刷部的W相连接部与U相印刷部的W相连接部电连接，W相印刷部的W相连接部与V相印刷部的W相连接部电连接，W相导电发热条呈S型排布设置在W相印刷部上，W相导电发热条的首端与W相印刷部的W相连接部电连接，W相导电发热条的末端与位于W相印刷部的电连接发热条电连接电连接。
以上述相应技术方案为基础的进一步技术方案是：还包括零线连接部。电连接片组件还包括零线电连接片。U相导电发热条、V相导电发热条和W相导电发热条的末端均通过电连接发热条与零线连接部电连接。零线电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的零线连接部的相应部位上。
以上述基本技术方案为基础的进一步技术方案是：三条导电发热条呈S形设置。U相导电发热条的一端与U相连接部电连接，另一端与V相连接部电连接。V相导电发热条的一端与V相连接部电连接，另一端与W相连接部电连接。W相导电发热条的一端与W相连接部电连接，另一端与U相导电发热条电连接。各导电发热条相互之间始终保持相互平行设置。
实现本发明目的的第二基本技术方案是：一种三相电热膜，其结构特点是：包括上绝缘层、发热芯层、下绝缘层和电连接片组件。发热芯层被包覆于上绝缘层和下绝缘层之间。
发热芯层包括U相连接部、V相连接部、W相连接部、R相连接部、S相连接部和T相连接部和三条导电发热条，三条导电发热条按其所电连接的相位的不同分别称为U相导电发热条、V相导电发热条和W相导电发热条。三条导电发热条呈S形设置。U相导电发热条的首端与U相连接部电连接，其末端与R相连接部电连接。V相导电发热条的首端与V相连接部电连接，其末端与S相连接部电连接。W相导电发热条的首端与W相连接部电连接，其末端与T相连接部电连接。
电连接片组件包括U相电连接片、V相电连接片、W相电连接片、R相电连接片、S相电连接片和T相电连接片。U相电连接片固定连接且电连接在上绝缘层和下绝缘 层包覆的U相连接部的部位上。V相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的V相连接部的部位上。W相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的W相连接部的部位上。R相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的R相连接部的相应部位上。S相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的S相连接部的相应部位上。T相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的T相连接部的相应部位上。
实现上述第二基本技术方案为基础的进一步技术方案是：下绝缘层从右至左依次设有U相印刷部、V相印刷部和W相印刷部。
W相印刷部的U相连接部与V相印刷部的U相连接部电连接，V相印刷部的U相连接部与U相印刷部的U相连接部电连接。
W相印刷部的R相连接部与V相印刷部的R相连接部电连接，V相印刷部的R相连接部与U相印刷部的R相连接部电连接。
U相导电发热条呈S型排布设置在U相印刷部上，U相导电发热条的首端与U相印刷部的U相连接部电连接，U相导电发热条的末端与U相印刷部的R相连接部电连接。
W相印刷部的V相连接部与V相印刷部的V相连接部电连接。W相印刷部的S相连接部与V相印刷部的S相连接部电连接。
V相导电发热条呈S型排布设置在V相印刷部上，V相导电发热条的首端与V相印刷部的V相连接部电连接，V相导电发热条的末端与V相印刷部的S相连接部电连接。
W相导电发热条呈S型排布设置在W相印刷部上，W相导电发热条的首端与W相印刷部的W相连接部电连接，W相导电发热条的末端与W相印刷部的T相连接部电连接。
本发明具有以下的有益效果：(1)本发明的三相电热膜结构简单，通过把3个结构相应的导电发热条通过星形或三角形连接集成在一起，成为一种全新的能采用三相供电的电热膜。本发明的三相电热膜连接方便、三相功耗差异小(<1％)，适用于对三相平衡要求较高场合，如轨道交通车辆直流逆变三相供电系统。
(2)本发明的三相电热膜还突破了传统的均匀分布设置的方式，采用了全新的设计理念，根据电热膜使用环境及被加热面(地板)传热和散热情况，调整电热膜功率密度分布(通过调整间距和/或导电发热条的导电截面积)，当传热和散热较快的场合，被加热表面温度呈现较大的梯度，电热膜中心温度高，周边温度低，通过提高电 热膜周边功率密度，减小电热膜中间的功率密度，保证电热膜整体温度分布均匀，防止局部温度过高，延长使用寿命和使用安全性。当发热芯层采用金属材料时，靠金属电阻通电发热，是纯电阻性的，发热效率99％以上。而且金属电阻率是正温度系数的，当电热膜温度升高到一定程度，电阻变大，功率减小，限制电热膜温度进一步上升，很快达到平衡状态，具有一定的自限温特性，使用安全性大大提高。
(3)本发明的实施例1所述的三相电热膜通过改变发热部相互平行的相邻部分之间的间距实现温度的均匀分布，中部散热慢，发热部间距大，发热量小，外侧热量可以向内侧辐射，保证中部达到设定的温度；周围散热快，发热部间距小，发热量大，一部分热量向内侧辐射，保证内侧温度，一部分热量向外周辐射，从而保证外周达到设定的温度。
(4)本发明的连张型三相电热膜，在左右方向上的宽度与轨道车辆的地板宽度相对应，能减少施工的工作量，提高铺设效率；单张型三相电热膜灵活性更好，适合局部铺设施工。
(5)本发明的三相电热膜的发热部采用了蛇形的S分布方式，相邻的发热条平行部分的电流方向相反，根据右手螺旋法则，电热膜上发热条产生的磁场会相互抵消，减少对轨道车辆上其他设备的干扰，使用可靠性进一步提高。
附图说明
图1为本发明的实施例1的三相三线的电热膜采用星形连接时的结构示意图。
图2为本发明的实施例1的三相三线的电热膜的层结构示意图。
图3为本发明的实施例2的三相三线的电热膜采用星形连接时的结构示意图。
图4为本发明的实施例3的三相三线三连张的电热膜采用星形连接时的结构示意图。
图5为本发明的实施例4的三相三线三连张的电热膜采用星形连接时的结构示意图。
图6为本发明的实施例5的三相三线的电热膜的采用三角形连接时结构示意图。
图7为本发明的实施例6的三相四线的电热膜的结构示意图。
图8为本发明的实施例7的三相四线的电热膜的结构示意图。
图9为本发明的实施例8的三相四线三连张的电热膜的结构示意图。
图10为本发明的实施例9的三相三线的电热膜的结构示意图。
图11为本发明的实施例10的三相三线三连张的电热膜的结构示意图。
附图中的标号为：
上绝缘层1，
发热芯层2，
U相导电发热条21，
V相导电发热条22，
W相导电发热条23，
零线连接部24，
电连接发热条25，
U相连接部21-1，V相连接部22-1，W相连接部23-1，R相连接部21-2，S相连接部22-2，T相连接部23-2，
下绝缘层3，U相印刷部3-1，V相印刷部3-2，W相印刷部3-3，
第一印刷部3a，第二印刷部3b，第三印刷部3c，
电连接片组件4，U相电连接片4-1，V相电连接片4-2，W相电连接片4-3，零线电连接片4-4，零线电连接片4-5。
具体实施方式
为了使本发明的内容更容易被清楚地理解，下面根据具体实施例并结合附图，对本发明作进一步详细的说明。本发明的方位的描述按照图1所示的方位进行，也即图1所示的上下左右方向即为描述的后前左右方向，图1所朝的一方为上方，背离图1的一方为下方。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。同时，在本发明的描述中，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
需要理解的是，术语“上”、“下”、“内”、“外”等指示方位或位置关系是基于附图所述的位置关系，仅是为了便于描述本发明或简化描述，而不是指示必须具有的特定的方位。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
(实施例1)
见图1和图2，本实施例1为三相三线单张型三相电热膜，三相负载星形连接。本实施例1的三相电热膜包括上绝缘层1、发热芯层2、下绝缘层3和电连接片组件4。上绝缘层1和下绝缘层3的材料相同PET(PET是英文Polyethylene terephthalate的缩写，简称PET或PETP)或PI(PI是英文Polyimide的简称，PI中文俗称聚酰亚胺，是分子结构含有酰亚胺基链节的芳杂环高分子化合物)或环氧树脂材料制成。上绝缘层1的相应部位从上向下通过热熔胶热压粘结固定在下绝缘层3上，发热芯层2被包覆于上绝缘层1和下绝缘层3之间。上绝缘层1和下绝缘层3的形状大小相同。
发热芯层2包括U相连接部21-1、V相连接部22-1、W相连接部23-1和三条导电发热条，三条导电发热条按其所电连接的相位的不同分别称为U相导电发热条21、V相导电发热条22和W相导电发热条23。U相连接部21-1、V相连接部22-1、W相连接部23-1和三条导电发热条均由导电发热涂料(导电发热涂料为现有技术)通过丝网印刷方法印刷在下绝缘层3的上侧上或导电发热条由胶粘复合在下绝缘层3的上侧上的金属箔通过印刷蚀刻方法制成，本实施例的导电发热条由胶粘复合在下绝缘层3的上侧上的铝箔通过印刷蚀刻方法制成，三条导电发热条呈S形设置，在前后方向上相互平行的部分，整体上间距有内至外呈减小设置，具体设置方法如下：根据公式P＝I 2R，串联状态电流相同，导电发热条导电截面积越小电阻越大，功率也越大；
Figure PCTCN2022083941-appb-000001
热量Q与电功率P成正比，与时间成正比，与半径平方成反比，公式的系数k与散热条件有关，k的范围为0-1。根据电热膜使用环境及被加热面(地板)传热和散热情况，调整电热膜功率密度分布(通过调整间距和/或导电发热条的导电截面积，本实施例通过调整相互之间的距离实现)，当传热和散热较快的场合，被加热表面温度呈现较大的梯度，电热膜中心温度高，周边温度低，通过提高电热膜周边功率密度，减小电热膜中间的功率密度，使被加热表面温度更加均匀。U相导电发热条21的首端与U相连接部21-1电连接。V相导电发热条22的首端与V相连接部22-1电连接。W相导电发热条23的首端与W相连接部23-1电连接。U相导电发热条21、V相导电发热条22和W相导电发热条23的末端相互电连接。电连接片组件4包括U相电连接片4-1、V相电连接片4-2和W相电连接片4-3。U相电连接片4-1、V相电连接片4-2和W相电连接片4-3均为铜材料制成。U相电连接片4-1采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的U相连接部21-1的部位上，且向下刺穿下绝缘层3形成铆接固定连接。V相电连接片4-2采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的V相连接部22-1的部位上，且向 下刺穿下绝缘层3形成铆接固定连接。W相电连接片4-3采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的W相连接部23-1的部位上，且向下刺穿下绝缘层3形成铆接固定连接。
本发明的电加热膜使用时可以设置在相应的地板或墙板中，U相电连接片4-1、V相电连接片4-2和W相电连接片4-3分别通过相应的导线与三相电源的U相、V相和W相电连接，U相电连接片4-1和相应导线电连接的部分、V相电连接片4-2和相应导线电连接的部分及W相电连接片4-3和相应导线电连接的部分均通过防水密封胶进行密封处理。
(实施例2)
见图3，本实施例2为三相三线单张型三相电热膜。本实施例其余部分与实施例1相同，其不同之处在于：U相导电发热条21、V相导电发热条22和W相导电发热条23的位于电热膜中部的部分中相互平行的部分之间的间距始终保持一致，位于左右两侧的部分相互平行的部分之间的间距由内向外呈减小设置。
(实施例3)
见图4，本实施例3为三相三线连张型三相电热膜。本实施例其余部分与实施例1相同，其不同之处在于：下绝缘层3从左至右依次设有U相印刷部3-1、V相印刷部3-2和W相印刷部3-3。发热芯层2还包括电连接发热条25。电连接发热条25沿U相印刷部3-1、V相印刷部3-2和W相印刷部3-3的后边沿连续设置。
U相印刷部3-1、V相印刷部3-2和W相印刷部3-3均设有U相连接部21-1、V相连接部22-1和W相连接部23-1。
U相导电发热条21呈S型排布设置在U相印刷部3-1上。U相导电发热条21的首端与U相印刷部3-1的U相连接部21-1电连接，U相导电发热条21的末端与位于U相印刷部3-1的电连接发热条25电连接。
V相印刷部3-2的V相连接部22-1与U相印刷部3-1的V相连接部22-1电连接，V相导电发热条22呈S型排布设置在V相印刷部3-2上，V相导电发热条22的首端与V相印刷部3-2的V相连接部22-1电连接，V相导电发热条22的末端与位于V相印刷部3-2的电连接发热条25电连接。
V相印刷部3-2的W相连接部23-1与U相印刷部3-1的W相连接部23-1电连接，W相印刷部3-3的W相连接部23-1与V相印刷部3-2的W相连接部23-1电连接，W相导电发热条23呈S型排布设置在W相印刷部3-3上，W相导电发热条23的首端与W相印刷部3-3的W相连接部23-1电连接，W相导电发热条23的末端与位于W相印 刷部3-3的电连接发热条25电连接电连接。
(实施例4)
见图5，本实施例4为三相三线连张型三相电热膜。本实施例其余部分与实施例1相同，其不同之处在于：下绝缘层3从左至右依次设有第一印刷部3a、第二印刷部3b和第三相印刷部3c。发热芯层2还包括电连接发热条25。电连接发热条25围绕第一印刷部3a、第二印刷部3b和第三印刷部3c的边沿设置。
第一印刷部3a、第二印刷部3b和第三印刷部3c均设有U相连接部21-1、V相连接部22-1和W相连接部23-1。
第一印刷部3a的U相连接部21-1和第二印刷部3b的U相连接部21-1电连接；U相导电发热条21呈S型排布设置在第一印刷部3a的前部和第二印刷部3b的前部上。第一印刷部3a的U相导电发热条21的一端与第一印刷部3a的U相连接部21-1电连接，另一端与电连接发热条25电连接；第二印刷部3b的U相导电发热条21的一端与第二印刷部3b的U相连接部21-1电连接，另一端与电连接发热条25电连接。
第一印刷部3a的W相连接部23-1和第二印刷部3b的W相连接部23-1电连接；W相导电发热条23呈S型排布设置在第一印刷部3a的后部和第二印刷部3b的后部上，且与第一印刷部3a和第二印刷部3b的U相导电发热条21呈前后对称设置；第一印刷部3a的W相导电发热条23的一端与第一印刷部3a的W相连接部23-1电连接，另一端与电连接发热条25电连接；第二印刷部3b的W相导电发热条23的一端与第二印刷部3b的W相连接部23-1电连接，另一端与电连接发热条25电连接。
第一印刷部3a的V相连接部22-1和第二印刷部3b的V相连接部22-1电连接，第二印刷部3b的V相连接部22-1和第三印刷部3c的V相连接部22-1和电连接；
V相导电发热条22呈S型排布设置在第三印刷部3c上，呈前后对称设置。位于第三印刷部3c的前部的V相导电发热条22的一端与第一印刷部3a的V相连接部22-1电连接，另一端与电连接发热条25电连接。位于第三印刷部3c的后部的V相导电发热条22的一端与第一印刷部3a的V相连接部22-1电连接，另一端与电连接发热条25电连接。
(实施例5)
见图6，本实施例5为三相三线单张型三相电热膜。本实施例其余部分与实施例3相同，其不同之处在于：本实施例三相负载为三角形连接。U相导电发热条21的一端与U相连接部21-1电连接，另一端与V相连接部22-1电连接；V相导电发热条22的一端与V相连接部22-1电连接，另一端与W相连接部23-1电连接；W相导电发热 条23的一端与W相连接部23-1电连接，另一端与U相导电发热条21电连接。各导电发热条相互之间始终保持相互平行设置。
(实施例6)
见图7，本实施例6为三相四线单张型三相电热膜。本实施例其余部分与实施例1相同，其不同之处在于：还包括零线连接部24。零线连接部24与电连接发热条25电连接。电连接片组件4还包括零线电连接片4-5。U相导电发热条21、V相导电发热条22和W相导电发热条23的末端均通过电连接发热条25与零线连接部24电连接。
零线电连接片4-5采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的零线连接部24的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
(实施例7)
见图8，本实施例7为三相四线单张型三相电热膜。本实施例其余部分与实施例2相同，其不同之处在于：还包括零线连接部24。零线连接部24与电连接发热条25电连接。电连接片组件4还包括零线电连接片4-5。U相导电发热条21、V相导电发热条22和W相导电发热条23的末端均通过电连接发热条25与零线连接部24电连接。
零线电连接片4-5采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的零线连接部24的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
(实施例8)
见图9，本实施例8为三相四线连张型三相电热膜。本实施例其余部分与实施例3相同，其不同之处在于：还包括零线连接部24。零线连接部24与电连接发热条25电连接。电连接片组件4还包括零线电连接片4-5。零线电连接片4-5采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的零线连接部24的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。零线连接部24连续设置在U相印刷部3-1、V相印刷部3-2和W相印刷部3-3上。
U相导电发热条21的末端与位于U相印刷部3-1的电连接发热条25电连接。
V相导电发热条22的末端与位于V相印刷部3-2的电连接发热条25电连接。
W相导电发热条23的末端与位于W相印刷部3-3的电连接发热条25电连接。
(实施例9)
见图10，本实施例9为外部连接单张型三相电热膜。本实施例其余部分与实施例1相同，其不同之处在于：发热芯层2还包括R相连接部21-2、S相连接部22-2和T相连接部23-2。
电连接片组件4还包括R相电连接片4-6、S相电连接片4-7和T相电连接片4-8。 R相电连接片4-6采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的R相连接部21-2的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
S相电连接片4-7采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的S相连接部22-2的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
T相电连接片4-8采用穿刺压接固定连接且电连接在上绝缘层1和下绝缘层3包覆的T相连接部23-2的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
U相导电发热条21的末端与R相连接部21-2电连接。
V相导电发热条22的末端与S相连接部22-2电连接。
W相导电发热条23的末端与T相连接部23-2电连接。
(实施例10)
见图11，本实施例10为外部连接连张型三相电热膜。本实施例其余部分与实施例3相同，其不同之处在于：下绝缘层3从右至左依次设有U相印刷部3-1、V相印刷部3-2和W相印刷部3-3。
发热芯层2还包括R相连接部21-2、S相连接部22-2和T相连接部23-2。U相印刷部3-1、V相印刷部3-2和W相印刷部3-3均设有R相连接部21-2、S相连接部22-2和T相连接部23-2。
电连接片组件4还包括R相电连接片4-6、S相电连接片4-7和T相电连接片4-8。R相电连接片4-6采用穿刺压接固定连接且电连接在位于W相印刷部3-3的上绝缘层1和下绝缘层3包覆的R相连接部21-2的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
S相电连接片4-7采用穿刺压接固定连接且电连接在位于W相印刷部3-3的上绝缘层1和下绝缘层3包覆的S相连接部22-2的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
T相电连接片4-8采用穿刺压接固定连接且电连接在位于W相印刷部3-3的上绝缘层1和下绝缘层3包覆的T相连接部23-2的相应部位上，且向下刺穿下绝缘层3形成铆接固定连接。
W相印刷部3-3的U相连接部21-1与V相印刷部3-2的U相连接部21-1电连接，V相印刷部3-2的U相连接部21-1与U相印刷部3-1的U相连接部21-1电连接。
W相印刷部3-3的R相连接部21-2与V相印刷部3-2的R相连接部21-2电连接，V相印刷部3-2的R相连接部21-2与U相印刷部3-1的R相连接部21-2电连接。
U相导电发热条21呈S型排布设置在U相印刷部3-1上，U相导电发热条21的 首端与U相印刷部3-1的U相连接部21-1电连接，U相导电发热条21的末端与U相印刷部3-1的R相连接部21-2电连接。
W相印刷部3-3的V相连接部22-1与V相印刷部3-2的V相连接部22-1电连接。
W相印刷部3-3的S相连接部22-2与V相印刷部3-2的S相连接部22-2电连接。
V相导电发热条22呈S型排布设置在V相印刷部3-2上，V相导电发热条22的首端与V相印刷部3-2的V相连接部22-1电连接，V相导电发热条22的末端与V相印刷部3-2的S相连接部22-2电连接。
W相导电发热条23呈S型排布设置在W相印刷部3-3上，W相导电发热条23的首端与W相印刷部3-3的W相连接部23-1电连接，W相导电发热条23的末端与W相印刷部3-3的T相连接部23-2电连接。
以上所述的具体实施例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种三相电热膜，其特征在于：包括上绝缘层、发热芯层、下绝缘层和电连接片组件；发热芯层被包覆于上绝缘层和下绝缘层之间；
    发热芯层包括U相连接部、V相连接部、W相连接部和三条导电发热条，三条导电发热条按其所电连接的相位的不同分别称为U相导电发热条、V相导电发热条和W相导电发热条；U相导电发热条、V相导电发热条和W相导电发热条与相应的U相连接部、V相连接部和W相连接部的三相负载采用星形连接或三角形连接；电连接片组件包括U相电连接片、V相电连接片和W相电连接片；U相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的U相连接部的部位上；V相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的V相连接部的部位上；W相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的W相连接部的部位上。
  2. 根据权利要求1所述的三相电热膜，其特征在于：三条导电发热条呈S形设置，在前后方向上相互平行的部分，整体上间距有内至外呈减小设置；U相导电发热条的首端与U相连接部电连接；V相导电发热条的首端与V相连接部电连接；W相导电发热条的首端与W相连接部电连接；U相导电发热条、V相导电发热条和W相导电发热条的末端相互电连接。
  3. 根据权利要求2所述的三相电热膜，其特征在于：还包括零线连接部；电连接片组件还包括零线电连接片；U相导电发热条、V相导电发热条和W相导电发热条的末端均通过电连接发热条与零线连接部电连接；零线电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的零线连接部的相应部位上。
  4. 根据权利要求2所述的三相电热膜，其特征在于：下绝缘层从左至右依次设有第一印刷部、第二印刷部和第三相印刷部；发热芯层还包括电连接发热条；电连接发热条围绕第一印刷部、第二印刷部和第三印刷部的边沿设置；
    第一印刷部、第二印刷部和第三印刷部均设有U相连接部、V相连接部和W相连接部；
    第一印刷部的U相连接部和第二印刷部的U相连接部电连接；U相导电发热条呈S型排布设置在第一印刷部的前部和第二印刷部的前部上；第一印刷部的U相导电发热条的一端与第一印刷部的U相连接部电连接，另一端与电连接发热条电连接；第二印刷部的U相导电发热条的一端与第二印刷部的U相连接部电连接，另一端与电连接发热条电连接；
    第一印刷部的W相连接部和第二印刷部的W相连接部电连接；W相导电发热条呈S型排布设置在第一印刷部的后部和第二印刷部的后部上，且与第一印刷部和第二印刷部的U相导电发热条呈前后对称设置；第一印刷部的W相导电发热条 的一端与第一印刷部的W相连接部电连接，另一端与电连接发热条电连接；第二印刷部的W相导电发热条的一端与第二印刷部的W相连接部电连接，另一端与电连接发热条电连接；
    第一印刷部的V相连接部和第二印刷部的V相连接部电连接，第二印刷部的V相连接部和第三印刷部的V相连接部和电连接；
    V相导电发热条呈S型排布设置在第三印刷部上，呈前后对称设置；位于第三印刷部的前部的V相导电发热条的一端与第一印刷部的V相连接部电连接，另一端与电连接发热条电连接；位于第三印刷部的后部的V相导电发热条的一端与第一印刷部的V相连接部电连接，另一端与电连接发热条电连接。
  5. 根据权利要求2所述的三相电热膜，其特征在于：下绝缘层从左至右依次设有U相印刷部、V相印刷部和W相印刷部；发热芯层还包括电连接发热条；电连接发热条沿U相印刷部、V相印刷部和W相印刷部的后边沿连续设置；U相印刷部、V相印刷部和W相印刷部均设有U相连接部、V相连接部和W相连接部；
    U相导电发热条呈S型排布设置在U相印刷部上；U相导电发热条的首端与U相印刷部的U相连接部电连接，U相导电发热条的末端与位于相印刷部的电连接发热条电连接；
    V相印刷部的V相连接部与U相印刷部的V相连接部电连接，V相导电发热条呈S型排布设置在V相印刷部上，V相导电发热条的首端与V相印刷部的V相连接部电连接，V相导电发热条的末端与位于V相印刷部的电连接发热条电连接；
    V相印刷部的W相连接部与U相印刷部的W相连接部电连接，W相印刷部的W相连接部与V相印刷部的W相连接部电连接，W相导电发热条呈S型排布设置在W相印刷部上，W相导电发热条的首端与W相印刷部的W相连接部电连接，W相导电发热条的末端与位于W相印刷部的电连接发热条电连接电连接。
  6. 根据权利要求5所述的三相电热膜，其特征在于：还包括零线连接部；电连接片组件还包括零线电连接片；U相导电发热条、V相导电发热条和W相导电发热条的末端均通过电连接发热条与零线连接部电连接；零线电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的零线连接部的相应部位上。
  7. 根据权利要求1所述的三相电热膜，其特征在于：三条导电发热条呈S形设置；U相导电发热条的一端与U相连接部电连接，另一端与V相连接部电连接；V相导电发热条的一端与V相连接部电连接，另一端与W相连接部电连接；W相导电发热条的一端与W相连接部电连接，另一端与U相导电发热条电连接；各导电发热条相互之间始终保持相互平行设置。
  8. 一种三相电热膜，其特征在于：包括上绝缘层、发热芯层、下绝缘层和电连接片组件；发热芯层被包覆于上绝缘层和下绝缘层之间；
    发热芯层包括U相连接部、V相连接部、W相连接部、R相连接部、S相连接部和T相连接部和三条导电发热条，三条导电发热条按其所电连接的相位的不同分别称为U相导电发热条、V相导电发热条和W相导电发热条；三条导电发热条呈S形设置；U相导电发热条的首端与U相连接部电连接，其末端与R相连接部电连接；V相导电发热条的首端与V相连接部电连接，其末端与S相连接部电连接；W相导电发热条的首端与W相连接部电连接，其末端与T相连接部电连接；
    电连接片组件包括U相电连接片、V相电连接片、W相电连接片、R相电连接片、S相电连接片和T相电连接片；U相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的U相连接部的部位上；V相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的V相连接部的部位上；W相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的W相连接部的部位上；R相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的R相连接部的相应部位上；S相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的S相连接部的相应部位上；T相电连接片固定连接且电连接在上绝缘层和下绝缘层包覆的T相连接部的相应部位上。
  9. 根据权利要求8所述的三相电热膜，其特征在于：下绝缘层从右至左依次设有U相印刷部、V相印刷部和W相印刷部；
    W相印刷部的U相连接部与V相印刷部的U相连接部电连接，V相印刷部的U相连接部与U相印刷部的U相连接部电连接；
    W相印刷部的R相连接部与V相印刷部的R相连接部电连接，V相印刷部的R相连接部与U相印刷部的R相连接部电连接；
    U相导电发热条呈S型排布设置在U相印刷部上，U相导电发热条的首端与U相印刷部的U相连接部电连接，U相导电发热条的末端与U相印刷部的R相连接部电连接；
    W相印刷部的V相连接部与V相印刷部的V相连接部电连接；W相印刷部的S相连接部与V相印刷部的S相连接部电连接；
    V相导电发热条呈S型排布设置在V相印刷部上，V相导电发热条的首端与V相印刷部的V相连接部电连接，V相导电发热条的末端与V相印刷部的S相连接部电连接；
    W相导电发热条呈S型排布设置在W相印刷部上，W相导电发热条的首端与W相印刷部的W相连接部电连接，W相导电发热条的末端与W相印刷部的T相连接部电连接。
PCT/CN2022/083941 2021-04-17 2022-03-30 三相电热膜 WO2022218155A1 (zh)

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US5597502A (en) * 1993-12-20 1997-01-28 Sakaguchi Dennetsu Kabushiki Kaisha Single phase/three phase heater element circuit for a ceramic fiber heater
CN201167775Y (zh) * 2008-02-25 2008-12-24 于爱文 双温的电热毯
WO2012045930A1 (fr) * 2010-10-08 2012-04-12 Ilo Technology Sas Film chauffant avec un raccordement électrique alimenté en courant triphasé
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CN112969249A (zh) * 2021-04-17 2021-06-15 常州长青科技股份有限公司 三相电热膜

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