JP2013216155A - Heater apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater apparatus that can be properly used for heating the inside of an electric car and others.SOLUTION: A heater apparatus A is formed by laminating a synthetic resin layer 4 containing heat conductive particles on a heater 1. The heat in the heater 1 is emitted to the outside through the synthetic resin layer 4 having high heat radiation performance. The heater apparatus A has excellent heating performance. The heater 1 is covered with the synthetic resin layer 4, to prevent direct contact with the heater 1, thereby preventing a user from being burned.

Description

  The present invention relates to a heater device.

  In recent years, various vehicle heating devices have been provided in order to make the interior space of automobiles more comfortable in winter. Patent Document 1 discloses a vehicle heating device, and this vehicle heating device supplies engine cooling water of a vehicle to a radiation radiator installed on the back surface of a front seat.

  On the other hand, from the viewpoint of protecting the global environment, a shift from conventional gasoline vehicles using gasoline as fuel to electric vehicles is being made. Since an electric vehicle uses an electric motor, there is a demand for a heating device that cannot use engine cooling water and can be used in an electric vehicle, unlike the above vehicle heating device.

JP 2008-254665 A

  The present invention provides a heater device that can be suitably used for heating in an electric vehicle and other heating applications.

  The heater device of the present invention is characterized in that a synthetic resin layer containing thermally conductive particles is laminated on a heater.

  The said heater apparatus WHEREIN: The uneven | corrugated | grooved part is formed in the outer surface of a synthetic resin layer, It is characterized by the above-mentioned.

  In the above heater device, the heater is a planar heater.

  In the heater device, a synthetic resin layer is laminated on the heater via a metal sheet.

  The heater device of the present invention is formed by laminating a synthetic resin layer containing thermally conductive particles on the heater, and radiates the heat of the heater to the outside through a synthetic resin layer having high thermal radiation. In addition to having performance, the heater is covered with a synthetic resin layer, so it does not come into direct contact with the heater and there is almost no risk of burns.

  Furthermore, since the synthetic resin layer contains thermally conductive particles, the heat of the heater can be smoothly conducted into the synthetic resin layer and efficiently radiated to the outside through the synthetic resin layer. According to this heater device, the heat of the heater can be efficiently radiated from the outer surface of the synthetic resin layer.

  Further, the synthetic resin constituting the synthetic resin layer has a low thermal conductivity and a small heat capacity. Therefore, when it comes into contact with the synthetic resin layer, the amount of heat accumulated in the synthetic resin layer is small, the heat transfer rate from the heater is relatively slow, and the heat transfer from the heater is not performed quickly. On the other hand, since the synthetic resin layer contains thermally conductive particles and has appropriate thermal conductivity, the amount of heat taken away from the synthetic resin layer is reduced from the heater to the synthetic resin layer within a short time. The heat dissipation can be continued again from the outer surface of the synthetic resin layer.

  In the above heater device, when the rugged portion is formed on the outer surface of the synthetic resin layer, the surface area of the synthetic resin layer can be increased, so that the heat radiation from the synthetic resin layer is more efficiently performed. be able to.

  Furthermore, since the concave and convex portions are formed on the outer surface of the synthetic resin layer, the contact area to the synthetic resin layer can be reduced when the synthetic resin layer comes into contact with the synthetic resin layer. be able to.

  In the above heater device, when the heater is a planar heater, the heater device can be thinned, and the heater device can be easily disposed and used at a desired location.

  In the above heater device, when the synthetic resin layer is laminated on the heater via the metal sheet, the metal sheet is heated by the heater and the heat of the heater is uniformly diffused over the entire surface of the metal sheet. The heat of the metal sheet can be radiated to the outside through the synthetic resin layer having higher radiation. Therefore, the heater device has better heating performance, and the metal sheet is covered with the synthetic resin layer. Therefore, there is almost no risk of burns without direct contact with the metal sheet.

It is the longitudinal cross-sectional view which showed the heater apparatus of this invention. It is the partially broken top view which showed the planar heater. It is the longitudinal cross-sectional view which showed another example of the planar heater. It is the longitudinal cross-sectional view which showed another example of the heater apparatus of this invention.

  An example of the heater device of the present invention will be described with reference to the drawings. In the heater device A, as shown in FIG. 1, a synthetic resin layer 3 is laminated on a planar heater 1 via a metal sheet 2.

  It does not specifically limit as the planar heater 1 used for the heater apparatus A, A well-known thing is used. Specifically, as the planar heater 1, as shown in FIG. 2, a planar shape is formed by sandwiching and integrating heater wires 12 in a meandering manner between a pair of electrically insulating sheets 11, 11. There is a heater, and the heater wire 12 generates heat when a direct current is applied to the heater wire 12.

  In addition, as shown in FIG. 3, the planar heater 1 has a PTC element body 14 sandwiched and integrated between a pair of electrically insulating sheets 13 and 13, and electrodes are integrally provided on the PTC element body 14. A PTC planar heater may be used. The PTC element body 14 is, for example, mainly composed of ceramics and added with a powder such as barium titanate. When the PTC element body 14 is energized, the temperature of the PTC element body 14 rises and exceeds a predetermined temperature. As a result, the electric resistance value of the PTC element body 14 is increased, the current supplied to the PTC element body 14 is decreased, and the temperature of the PTC element body 14 is lowered to perform self-temperature adjustment.

  The planar heater 1 may be a planar heater in which a conductive layer 14 is sandwiched and integrated between a pair of electrically insulating sheets 13 and 13 and electrodes are integrally provided on the conductive layer 14. The conductive layer 14 is a layer containing a general-purpose adhesive as a binder and containing conductive particles such as carbon particles. The conductive layer 14 is configured to generate heat when a direct current is applied to the conductive layer 14. Yes.

  In addition, it does not specifically limit as an electrically insulating sheet | seat which comprises the said planar heater 1, For example, synthetic resin sheets, such as a polyethylene terephthalate sheet, etc. are mentioned.

  A metal sheet 2 is laminated and integrated on the entire surface of the sheet heater 1 so as to be in close contact with the entire surface. Since the metal sheet 2 is heated by the planar heater 1, it does not have to be altered by the heat of the planar heater 1, and examples of the material of the metal sheet 2 include aluminum, iron, copper, and alloys. The metal sheet 2 may be used as a single metal sheet or may be a laminated sheet obtained by laminating and integrating two metal sheets.

  The heat of the planar heater 1 can be diffused over the entire surface of the metal sheet 2 by laminating and integrating the metal sheet 2 on one surface of the planar heater 1. On the other hand, the heat insulating material 3 is laminated and integrated on the entire other surface of the planar heater 1 so that the heat of the planar heater 1 does not escape from the other surface side. In addition, as the heat insulating material 3, a foam sheet is mentioned, for example.

  Furthermore, in the heater device A of the present invention, the synthetic resin layer 4 is laminated and integrated on the metal sheet 2 so as to be in close contact with the entire surface. In the heater device A of FIG. 3, the synthetic resin layer 4 also covers the side surfaces of the planar heater 1 and the metal sheet 2, and the planar heater 1 and the metal sheet 2 are entirely covered with the synthetic resin layer 4. It has become.

  The synthetic resin constituting the synthetic resin layer 4 is not particularly limited as long as it is not deteriorated by the heat of the planar heater 1 and the metal sheet 2. For example, polyolefin resin such as polypropylene resin, ABS resin, etc. , Polycarbonate resin, polyamide resin, polyester resin such as polyethylene terephthalate, polyphenylene sulfide resin, liquid crystal polymer, and the like.

  An uneven portion 41 is formed on the outer surface of the synthetic resin layer 4. The surface area of the synthetic resin layer 4 is increased by forming the uneven portions 41 on the outer surface of the synthetic resin layer 4, so that heat can be efficiently radiated from the outer surface of the synthetic resin layer 4.

  Furthermore, the synthetic resin layer 4 contains thermally conductive particles. Such heat conductive particles are not particularly limited as long as the particles have a conductivity higher than that of the synthetic resin. It does not specifically limit as a form of heat conductive particle, For example, fibrous form, needle shape, scale shape, spherical shape etc. are mentioned. Examples of the thermally conductive particles include aluminum nitride, boron nitride, silicon nitride, silicon carbide, alumina, bariums, magnesiums, calciums, golds, silver, copper, steel, titanium oxide, aluminum, tin, zinc, Examples thereof include metal particles such as zirconium, duralumin, molybdenum, and beryllium, mineral particles such as talc, and carbon fillers (carbon nanotubes, carbon nanofibers, fillers, graphene, and graphite).

  If the content of the heat conductive particles is small, the heat conductivity of the synthetic resin layer is lowered, and the heating performance of the heater device may be lowered. If the content is large, the mechanical strength of the synthetic resin layer is lowered. Therefore, 3 to 80 parts by weight is preferable with respect to 100 parts by weight of the synthetic resin.

  Next, how to use the heater device A of the present invention will be described. The heater device A of the present invention can be used in any place where a power source can be secured. For example, the heater device A can be suitably used in an automobile, particularly an electric automobile. FIG. 1 shows a case where the heater device A is fixed on a fixing member B such as a body of an automobile.

  In order to use the heater device A, the planar heater 1 may be heated by passing an electric current through the planar heater 1. When the sheet heater 1 of the heater device A generates heat, the metal sheet 2 is heated by this heat generation. Since the metal sheet 2 has high thermal conductivity, the metal sheet 2 is heated almost uniformly over the entire surface.

  The synthetic resin layer 4 in contact with the metal sheet 2 is heated by the heating of the metal sheet 2. Since the synthetic resin layer 4 contains thermally conductive particles, the synthetic resin layer 4 has excellent thermal conductivity, and the synthetic resin layer 4 smoothly and entirely by heating with the metal sheet 2. The heat is radiated from the outer surface of the synthetic resin layer 4 and the surroundings can be warmed by this heat.

  The synthetic resin layer 4 has excellent heat radiation, and the synthetic resin layer 4 contains heat conductive particles. Since the synthetic resin layer 4 has high thermal conductivity, the heat of the metal sheet 2 is synthesized. Heat can be efficiently radiated through the resin layer 4, and the heater device A has excellent heating performance. Since the planar heater 1 and the metal sheet 2 are entirely covered with the synthetic resin layer 4, there is no possibility of direct contact with the planar heater 1 and the metal sheet 2, and an unexpected situation such as a burn occurs. do not do.

  In the heater device A, the case where a planar heater is used as the heater has been described. However, the heater device A does not have to be a planar heater, has a shape according to the location where the heater device A is disposed, and has shape followability. A general-purpose heater such as a flexible heater, a coil heater, a sheath heater, or a cartridge heater embedded in metal may be used. Further, a structure in which a heater wire is integrally provided on the inner surface of the synthetic resin layer 4 as a heater may be employed.

  Further, in the heater device A, the case where the synthetic resin layer is laminated on the planar heater 1 via the metal sheet has been described. However, as shown in FIG. The synthetic resin layer 4 may be laminated. Also in this case, a general-purpose heater other than the planar heater may be used as the heater.

1 Heater (Surface heater)
2 Metal sheet 3 Synthetic resin layer 3 Thermal insulation material 4 Synthetic resin layer
11 Electrical insulation sheet
12 Heater wire
13 Electrical insulating sheet
14 Element body, conductive layer
41 Concavity and convexity A Heater device

Claims (4)

A heater device, wherein a synthetic resin layer containing thermally conductive particles is laminated on a heater. The heater device according to claim 1, wherein an uneven portion is formed on an outer surface of the synthetic resin layer. The heater device according to claim 1 or 2, wherein the heater is a planar heater. The heater device according to any one of claims 1 to 3, wherein a synthetic resin layer is laminated on the heater via a metal sheet.

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