JP3132051U - Film heater - Google Patents

Abstract

An object of the present invention is to improve workability by expanding the width and / or length of a heater.
The heater 1 includes two units 11 and 12 having a common insulating film-like base material 2 and predetermined units in the length direction of the base material 2 for each unit on the base material 2. And a plurality of planar heating elements that generate heat when energized, and planar electrodes that are arranged on both sides in the width direction of the substrate 2 and connect to each planar heating element, and the common substrate 2 A non-conductive portion 13 is formed between the side portions of each of the units 11 and 12 by laminating a sheet heating element and a common insulating film-like covering material 5 polymerized from above the sheet electrodes. Are merged together.
[Selection] Figure 1

Description

  The present invention relates to a film heater used for floor heating.

  Conventionally, this type of film heater has been proposed by the applicant of the present application, and is described in Patent Document 1. In this heater, a plurality of planar heating elements that generate heat when energized, such as copper foil and aluminum foil, are arranged in parallel at predetermined intervals in the length direction of the film on an insulating synthetic resin film. A pair of planar electrodes are arranged on both sides in the width direction of the film, connected to each planar heating element, and an insulating synthetic resin film is laminated thereon. A necessary number of heaters are laid on a plane in accordance with the installation area, and each electrode is connected to a cable and connected to a power source.

JP 2004-220983 A

  By the way, in order to prevent dangers such as electric shock, various electrical devices are always insulated, but the insulation resistance is not infinite, so there is always a small amount of leakage current. appear. For this reason, various safety measures are taken for various electrical devices in order to eliminate the influence of this leakage current. In the case of a film-type heater used in a floor heating system, one unit (one heater) is formed within a certain width and length in order to ensure electrical safety. Incidentally, in the case of a film type heater, as shown in FIG. 3, there are many products in which the width of one unit is about 300 mm. In that case, the thickness of the main body is based on the above-mentioned request for ensuring electrical safety. Is often made thicker or the length is limited to dimensions of up to about 3000 mm.

  Thus, in the case of this type of heater, since one unit is formed within a certain length and width, the flat area of one unit is extremely small compared to the floor area of the construction site. I have to be. For this reason, when constructing a floor heating system, as described above, since it is necessary to lay out the necessary number of heaters according to the installation area, one unit at a time. There is a problem that the operation time is increased and the cost is increased.

  The present invention solves the above problems, and in this type of film heater, while ensuring sufficient safety as an electrical device, the width and / or length of one unit is expanded to improve the workability. The purpose is to improve.

  In order to achieve the above object, a film heater according to the present invention includes at least an insulating film-like substrate and a parallel arrangement at predetermined intervals on the substrate in the length direction of the substrate. A plurality of planar heating elements that generate heat when energized, a pair of planar electrodes that are arranged on both sides in the width direction of the substrate, and are connected to the planar heating elements; and the planar heating element on the substrate And a film-type heater formed of an insulating film-like covering material laminated on the respective planar electrodes, wherein one unit is formed within a certain width and length for electrical safety. Two or more units are formed of a common base material or covering material, or a common base material and covering material, and a non-energized portion between side portions or between end portions of each unit or between side portions and between end portions The main point is that they are merged together. In this case, it is preferable that a shield material having an earth structure is laminated on the entire surface of the current-carrying portion on the surface of the base material and / or the covering material of each unit.

  The film heater according to the present invention has the above-described configuration, and increases the width and / or length of one unit while ensuring sufficient safety as an electric device, thereby improving workability. Can do.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the film heater 1 (hereinafter simply referred to as the heater 1) is composed of two units 11 and 12, and the two units 11 and 12 are arranged side by side between the side portions of the units 11 and 12. Are connected by a non-energized portion 13 made of an insulating material, and are integrally formed.

  As shown in FIGS. 1 and 2, the heater 1 includes a first insulating unit 11, a second unit 12, a common insulating film-like substrate 2, and each unit 11, 12 on the substrate 2. Separately, a plurality of planar heating elements 3 that are arranged in parallel at predetermined intervals in the length direction of the base material 2 and generate heat when energized, and are arranged on both sides of the base material 2 in the width direction, A pair of planar electrodes 4 connected to the body 3, and a common insulating film-like covering material that is polymerized on the common substrate 2 from above each other planar heating element 3 and each planar electrode 4 5 are laminated. In this case, the insulating film-like substrate 2 is a rectangular film sheet having an area of 2 units 11 and 12 minutes (side-by-side) formed of PEТ (polyethylene terephthalate). A non-energized portion 13 extending in the length direction is provided at the center of the width direction on the film sheet to be the substrate 2, and carbon (carbon paste) is provided on each of the half surfaces 21 and 22 with the non-energized portion 13 as a boundary. ) Is printed and formed in a substantially strip shape with a constant thickness at regular intervals in the length direction of the base material 2, and a flat cable (conductor) is adopted for each of the pair of planar electrodes 4. Are installed on both sides in the width direction (that is, on both the left and right sides of each half surface 21, 22). The insulating film-like covering material 5 is a rectangular film sheet having an area of 12 minutes (side-by-side) 2 units 11 formed side by side as in the case of the base material 2. It is crimped onto the film sheet from above the carbon and flat cable via an adhesive. In this way, the two units 11 and 12 are formed of the common base material 2 and the covering material 5 and are integrally merged with the non-electrically conductive portion 13 interposed between the side portions of the units 11 and 12. . In addition, a shield material 6 having a ground structure is laminated on the entire surface of the energized portion on the surface of the base material 2 and the covering material 5. This shield material 6 is formed by spreading an aluminum foil on the entire surface of a rectangular film sheet corresponding to the range of the energized portions of the units 11 and 12 formed by PEТ. 2 and the covering material 5 are pressure-bonded onto each film sheet via an adhesive. This shielding material 6 has a ground structure in which a ground wire is connected to a film sheet of aluminum specification on the entire surface, and has a safety structure that cuts off an electric circuit by an earth leakage breaker and stops energization even if an electric leakage occurs. .

  In this way, the heater 1 has the two units 11 and 12 merged side by side, so that the dimension in the width direction is doubled and the plane area is doubled compared to the conventional heater. Can do. That is, the heater 1 can be a wide type having a width of 606 mm and a maximum length of 3030 mm, compared to a conventional heater having a width of 303 mm and a maximum length of 3030 mm. Moreover, since the non-energized portion 13 is provided between the two units 11 and 12, the electrical safety of the units 11 and 12 can be ensured as in the conventional case. Therefore, this one heater is equivalent to two units of the conventional heater, and when installing the floor heating system, in the laying work to lay the required number of heaters according to the area of the installation destination The work time required for installation can be reduced by half compared to the conventional method, and the work time can be greatly reduced. With this, the materials required for laying the heater can be greatly reduced, and the overall cost can be greatly reduced. The practical effect is extremely large.

  In the above embodiment, the two units 11 and 12 are arranged side by side, and the non-energized portions 13 are interposed between the side portions of the units 11 and 12 so as to be integrated together. Units can be merged in the same way. It is also possible to arrange two or more units vertically and merge them together with a non-energized portion interposed between the end portions of each unit. Further, two or more units can be arranged horizontally and vertically, and can be merged integrally with a non-energized portion interposed between the side portions and between the end portions of each unit. By connecting multiple heaters in the width direction, length direction, or both directions in this way, variations in the size and shape of the heater can be expanded and applied to floors of various sizes and shapes in various buildings. At the same time, the labor for installing the heater can be greatly reduced, and the construction can be performed easily.

  Moreover, in the said embodiment, although the two units 11 and 12 were united integrally by the common base material 2 and the coating | covering material 5, only one of a base material or a coating | covering material is made common, and two or more units are combined. May be formed on a common base material, and each unit may be applied together by coating each unit with a different covering material. Conversely, two or more units may be separately provided. The units may be integrated together by forming a common covering material on the base material.

The top view of the film type heater in one embodiment of the present invention Side sectional view of the heater Plan view showing the width and length of a conventional film heater

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Film type heater 11, 12 unit 13 Non-current-carrying part 2 Insulating film-like base material 21, 22 Half face 3 Planar heating element 4 Planar electrode 5 Insulating film-like coating material 6 Shielding material

Claims (2)

At least an insulating film-like base material, a plurality of planar heating elements that are arranged in parallel at predetermined intervals on the base material in the length direction of the base material, and generate heat when energized, and the base material A pair of planar electrodes connected to the respective planar heating elements, and an insulating film laminated on the substrate from above the planar heating element and each planar electrode In the film heater, which is formed of a uniform covering material and is formed within a certain width and length in terms of electrical safety,
Two or more units are formed of a common base material or covering material, or a common base material and covering material, and each unit has a non-current-carrying portion between side portions or between end portions or between side portions and between end portions. A film heater characterized by being interposed and integrally merged.   The film-type heater according to claim 1, wherein a shield material having a ground structure is laminated on the entire surface of the energized portion on the surface of the base material and / or the covering material of each unit.

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