JP2008101790A - Temperature compensation heater for refrigerators - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature compensating heater for a refrigerator or the like, which acquires sufficient bonding strength in joining aluminum foil and a heater wire coated with crosslinked polyethylene. <P>SOLUTION: The aluminum foil 1 and the heater wire 5 coated with crosslinked polyethylene are firmly joined by inserting the heater wire 5 coated with crosslinked polyethylene in a groove 4 in one side of the aluminum foil 1. The heater wire 5 coated with crosslinked polyethylene is thereby fixed, for instance, by holding the heater wire 5 coated with crosslinked polyethylene between two sheets of aluminum foil 1 with an adhesive. The heat of the heater wire 5 is efficiently transmitted to the aluminum foil 1 by the increase of contact area between the heater wire 5 and the aluminum foil 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to adhesion between a temperature compensation heater of a refrigerator and an aluminum foil for heat diffusion.

  Refrigerators are generally devices for cooling food, but depending on how the cold air flows, some of them are overcooled, which may cause problems as product specifications. In such places, temperature compensation heaters are installed and controlled at appropriate temperatures.

  Conventionally, temperature compensation heaters for refrigerators have heater wires coated with vinyl chloride on aluminum foil coated with a heat-sensitive adhesive, and both are heated and pressurized to bond the heater wires to the aluminum foil surface. (For example, refer to Patent Document 1).

  The role of the aluminum foil in this case is uniform diffusion of the heat of the heater wire.

  FIG. 2 is a partial cross-sectional schematic diagram of a conventional temperature compensation heater.

  In the figure, a heat-sensitive adhesive layer 2 is provided on an aluminum foil 1, and a vinyl chloride-coated heater wire 3 is provided thereon. By heating and pressurizing them, the heat-sensitive adhesive layer 2 and the vinyl chloride-coated heater wire 3 partially melted are bonded to each other, and the heat when the heater is energized can be efficiently transmitted to the aluminum foil 1.

In the above configuration, a temperature-compensated heater with good heat conduction can be supplied.
JP 2001-310980 A

  Vinyl chloride, a wire covering material that has been widely used up to now, can generate harmful chlorine-based gases during combustion during product disposal, and can generate more harmful dioxins under certain conditions. For this reason, substitution of vinyl chloride has been widely studied, and crosslinked polyethylene is considered to be the most promising alternative material in terms of cost and performance.

  However, the conventional temperature compensation heater has a problem that sufficient adhesive strength cannot be obtained when the material of the heater wire coating is changed from vinyl chloride to crosslinked polyethylene.

  Crosslinked polyethylene is strengthened by electron beam crosslinking to the same strength as vinyl chloride, but has a high heat resistance temperature, and the surface does not melt even when bonded to the adhesive layer, so that sufficient adhesive strength cannot be obtained.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a temperature compensation heater in which an aluminum foil and a crosslinked polyethylene-coated heater wire are firmly bonded.

  In order to solve the above-described conventional problems, the temperature compensation heater of the present invention has a configuration in which a groove is formed in an aluminum foil and a crosslinked polyethylene-coated heater wire is sandwiched.

  As a result, the aluminum foil and the cross-linked polyethylene-coated heater wire can be firmly bonded.

  The temperature-compensated heater of the present invention can firmly join the aluminum foil and the crosslinked polyethylene-coated heater wire by sandwiching the crosslinked polyethylene heater wire in the groove of the aluminum foil.

  In the first aspect of the invention, the crosslinked polyethylene-coated heater wire is fixed by sandwiching the crosslinked polyethylene-coated heater wire in the groove of the aluminum foil, and the aluminum foil and the crosslinked polyethylene-coated heater wire are firmly bonded. be able to.

  In the invention according to claim 2, the crosslinked polyethylene-coated heater wire is fixed by sandwiching the crosslinked polyethylene-coated heater wire with two aluminum foils with adhesive, and the aluminum foil and the crosslinked polyethylene-coated heater wire are fixed. It can be firmly joined. Since the contact area between the heater wire and the aluminum foil increases, there is also an effect of efficiently transferring the heat of the heater wire to the aluminum foil.

  The invention according to claim 3 is that the heat-shrinkable film shrinks by heating the whole by sandwiching the aluminum foil and the crosslinked polyethylene-coated heater wire with the heat-shrinkable film, and the crosslinked polyethylene-coated heater wire is fixed. Thus, the aluminum foil and the crosslinked polyethylene-coated heater wire can be firmly bonded. Since the heat-shrinkable film shrinks by heating, there is an effect that the productivity of the temperature compensation heater is high.

  The invention according to claim 4 is to fix the cross-linked polyethylene-coated heater wire by joining the aluminum foil and the cross-linked polyethylene-coated heater wire with a hot melt adhesive. It can be firmly joined. Since the hot melt adhesive is cured by a decrease in temperature, the apparatus can be automated.

  In the invention according to claim 5, by joining the aluminum foil and the crosslinked polyethylene-coated heater wire with an adhesive, the crosslinked polyethylene-coated heater wire is fixed, and the aluminum foil and the crosslinked polyethylene-coated heater wire are strengthened. Can be joined. Since the adhesive always has adhesiveness, there is an effect that the heater wire can be reattached.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a partial cross-sectional schematic view of a temperature compensation heater according to Embodiment 1 of the present invention.

  In FIG. 1, the groove | channel 4 is arrange | positioned in the single side | surface of the aluminum foil 1, the bridge | crosslinking polyethylene covering heater wire 5 is inserted in the groove | channel 4, and a bridge | crosslinking polyethylene covering heater wire is fixed.

  With this structure, the aluminum foil 1 and the crosslinked polyethylene-coated heater wire 5 can be firmly bonded.

  Moreover, the crosslinked polyethylene-coated heater wire 5 is fixed by sandwiching the crosslinked polyethylene-coated heater wire 5 with two aluminum foils with adhesive. Since the contact area between the heater wire and the aluminum foil is increased, the heat of the heater wire is efficiently transferred to the aluminum foil.

  Further, by enveloping the aluminum foil 1 and the cross-linked polyethylene-coated heater wire 5 with a heat-shrinkable film, the heat-shrinkable film shrinks by heating the whole, and the cross-linked polyethylene-coated heater wire 5 is fixed. Since the heat shrinkable film shrinks by heating, the temperature-compensated heater is highly productive and has a feature that mass production is easy.

  Moreover, the crosslinked polyethylene-coated heater wire 5 is fixed by joining the aluminum foil 1 and the crosslinked polyethylene-coated heater wire 5 with a hot melt adhesive. Since the hot melt adhesive is cured when the temperature is lowered, the apparatus can be automated.

  Moreover, the crosslinked polyethylene-coated heater wire 5 is fixed by joining the aluminum foil 1 and the crosslinked polyethylene-coated heater wire 5 with an adhesive. Since the adhesive is always sticky, the heater wire can be reattached.

  As described above, since the temperature compensation heater according to the present invention can firmly join the aluminum foil and the crosslinked polyethylene-coated heater, it can be applied to other crosslinked polyethylene processed products.

The partial cross section schematic diagram of the temperature compensation heater in Embodiment 1 of this invention Partial cross-sectional schematic diagram of a conventional temperature compensation heater

Explanation of symbols

1 Aluminum foil 4 Groove 5 Crosslinked polyethylene covered heater wire

Claims (5)

  A temperature-compensated heater for a refrigerator or the like, characterized in that a cross-linked polyethylene-coated heater wire is sandwiched in an aluminum foil groove.   A temperature-compensated heater for a refrigerator or the like, characterized in that a crosslinked polyethylene-coated heater wire is sandwiched between two aluminum foils with adhesive.   A temperature-compensated heater for a refrigerator or the like, in which an aluminum foil and a crosslinked polyethylene-coated heater wire are encased in a heat-shrink film.   A temperature-compensated heater for a refrigerator or the like, wherein an aluminum foil and a crosslinked polyethylene-coated heater wire are joined with a hot melt adhesive.   A temperature-compensated heater for a refrigerator or the like, wherein an aluminum foil and a crosslinked polyethylene-coated heater wire are joined with an adhesive.

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