JP2002008835A - Heating wire and heating body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily realize a deformation processing of a heating wire corresponding to a shape of an object to be heated. SOLUTION: A heating strand 26 supported by an insulation support 28 having an electrical insulation property is inserted into a hollow heating pipe made of aluminum and lead terminals 22 are electrically connected to both ends of the heating strand 26. Thereby, the heating wire can be easily subjected to deformation-processing corresponding to a shape of an object to be heated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating wire and a heating element, and more particularly to a heating wire supported by an insulating support inserted into a hollow outer tube, and both ends of the heating wire are both ends of the hollow outer tube. A heating wire electrically connected to the lead terminal fixed to the heating wire, and a heating base made of a heat conductor and having a curved heating introduction groove dug in the surface thereof, and pressed into the heating wire introduction groove in close contact with the heating base. And a heating element having a heating wire.

[0002]

2. Description of the Related Art Conventionally, as this kind of heating wire, a heating wire having a square cross section has been proposed (for example,
Japanese Utility Model Laid-Open No. 4-40893, etc.). In this heating wire,
By arranging the cross-sectional shape on the object to be heated as a square, the contact area between the heating wire and the object to be heated is increased to increase the heating efficiency.

[0003]

However, with such a heating wire, it is necessary to deform the heating wire according to the shape of the heating object when arranging the heating wire on the heating object. In some cases, it is difficult to deform the heating wire according to its shape, and as a result, the heating efficiency may be reduced. Further, when the heating wire is deformed by a processing device or the like, there is a problem that the processing cost is increased.

[0004] It is an object of the present invention to provide a heating wire and a heating element which can be easily deformed according to the shape of a heating object on which the heating wire is arranged.

[0005]

Means for Solving the Problems and Actions and Effects Thereof The heating wire and the heating element of the present invention employ the following means to achieve the above object.

In the heating wire of the present invention, a heating wire supported by an insulating support is inserted into a hollow outer tube, and both ends of the heating wire are electrically connected to lead terminals fixed to both ends of the hollow outer tube. In the heating wire connected to the above, the hollow outer tube is made of aluminum in the shape of a rectangular tube, and has a flexibility capable of freely deforming up to a curvature t on the center line when the outer width of the rectangular tube is t. It is characterized by.

In the heating wire of the present invention, when the outer width of the rectangular tube of the hollow outer tube is t, the heating wire has a flexibility that can be freely deformed up to the curvature t on the center line thereof. It can be easily deformed accordingly.

Further, the heating element of the present invention is made of a heat conductor, and has a heating base having a surface into which a bent heating line introducing groove is dug and formed, and a heating wire which is pressed in close contact with the heating line introducing groove. The heating wire has a heating wire supported by an insulating support inserted into the hollow outer tube, and both ends of the heating wire are electrically connected to lead terminals fixed to both ends of the hollow outer tube. A connected heating wire, wherein the hollow outer tube is made of aluminum in the shape of a rectangular tube, and has a flexibility such that when the outer width of the rectangular tube is t, it can be freely deformed to a curvature t on its center line. It is characterized by the following.

In the heating element of the present invention, when the outer width of the rectangular tube of the hollow outer tube is represented by t, the heating wire having flexibility which can be freely deformed up to the curvature t on the center line is formed on the surface of the heating substrate. The heating wire can be easily deformed and pushed in according to the shape of the heating wire introduction groove since the heating wire is pressed into close contact with the formed heating wire introduction groove.

[0010]

Next, an embodiment of the present invention will be described. FIG. 1 is a configuration diagram schematically showing a configuration of a heating wire 20 according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating a cross section of the heating wire 20 according to one embodiment of the present invention. The heating wire 20 of the embodiment is a hollow heating tube 24 that comes into contact with an object to be heated.
And a coil-shaped heating element wire 26 inserted into the heating tube 24 and generating heat by application of a current from a power supply, and supporting the heating element wire 26 made of a material having electrical insulation (eg, magnesium oxide). Insulating support 28 and heating tube 24
And a lead terminal 22 fixed at both ends of the heating element 26 and electrically connected at both ends of the heating element wire 26 by spot welding or the like.

The heating tube 24 is made of aluminum which is flexible and has excellent thermal conductivity. Further, the heating tube 24 has a rectangular tube (for example, a square or a rectangular shape) in cross section in order to increase the contact area when arranging the heating tube 24 on the object to be heated and to improve the heating efficiency.

The operation of the heating wire 20 of the embodiment constructed as described above, in particular, the deformation processing of the heating wire 20 will be described. When arranging the heating wire 20 on the object to be heated, the heating wire 20
Needs to be deformed in accordance with the shape of the object to be heated. However, since the heating tube 24 is made of aluminum as described above, it can be bent and deformed freely. In the embodiment, as shown in FIG. 3, when the outer width of the heating tube 24 is t, the heating wire 20 can be deformed freely up to the curvature t on the center line of the heating tube 24. Therefore, the heating wire 20 can be freely deformed according to the shape of the object to be heated within the range of the curvature t.
FIG. 4 shows an example of the deformation processing of the heating wire 20. The heating wire 20 deformed according to the shape of the object to be heated is arranged on the object to be heated, and the heating wire 26 generates heat by applying a current to the lead terminals 22 of the heating wire 20.
The object to be heated can be heated by the heat transfer via 4.

In the heating wire 20 of the embodiment described above, when the outer width of the heating tube 24 is t, the heating wire 20 has flexibility on the center line so that it can be freely deformed up to the curvature t. Deformation processing can be easily performed according to the shape of the object to be heated, and the heating efficiency can be improved. Moreover, since no processing equipment is required for deformation processing,
Processing costs can also be reduced.

Next, a description will be given of a heating element 30 according to a second embodiment of the present invention. FIG. 5 is a configuration diagram schematically showing the configuration of the heating element 30 of the second embodiment. Heating body 30 of second embodiment
Includes the heating wire 20 of the first embodiment and a heating base 32 into which the heating wire 20 is pushed. Therefore,
The heating wire 2 of the first embodiment among the heating elements 30 of the second embodiment
The same components as those of 0 are denoted by the same reference numerals, and description thereof is omitted.

A heating base 32 constituting a part of the heating body 30
Is made of a material having thermal conductivity (for example, silver, copper, aluminum, or the like), and has a heating wire 2
The heating wire introduction groove 34 into which 0 can be pushed is bent and dug. Therefore, the heating wire 20 deformed freely according to the shape of the heating wire introduction groove 34 is pushed in, and a current is applied to the lead terminals 22 of the heating wire 20 to cause the heating wire 20 to generate heat. Thus, the object to be heated is heated. The heating wire introduction groove 34 may have any bent shape as long as the heating wire 20 can be deformed.

In the heating element 30 of the second embodiment described above, the heating wire 20 is adapted to the bent shape of the heating wire introduction groove 34.
Can be freely deformed and pressed into the heating wire introduction groove 34, so that the heating efficiency can be improved.

The embodiments of the present invention have been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various embodiments may be made without departing from the gist of the present invention. Of course, it can be carried out.

[Brief description of the drawings]

FIG. 1 is a configuration diagram schematically illustrating a configuration of a heating wire 20 according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a section of a heating wire 20 according to an embodiment of the present invention.

FIG. 3 is a view showing an example of deformation processing of a heating wire 20;

FIG. 4 is a diagram illustrating an example of a heating wire 20 that has been deformed.

FIG. 5 is a configuration diagram schematically showing a configuration of a heating body 30 according to a second embodiment of the present invention.

[Explanation of symbols]

20 heating wire, 22 lead terminal, 24 heating tube, 26
Heating wire, 28 Insulating support, 30 Heating body, 32
Heating substrate, 34 heating wire introduction groove.

Claims (2)

[Claims] 1. A heating wire supported by an insulating support is inserted into a hollow outer tube, and both ends of the heating wire are electrically connected to lead terminals fixed to both ends of the hollow outer tube. In the heating wire, the hollow outer tube is made of aluminum in the shape of a rectangular cylinder, and has a flexibility such that the outer width of the rectangular cylinder can be freely changed to a curvature t on the center line when the outer width of the rectangular tube is t. line. 2. A heating base made of a heat conductor and having a curved heating line introduction groove dug in the surface thereof, and a heating wire pressed closely into the heating line introduction groove, The wire is a heating wire in which a heating wire supported by an insulating support is inserted into a hollow outer tube, and both ends of the heating wire are electrically connected to lead terminals fixed to both ends of the hollow outer tube. The heating element is characterized in that the hollow outer tube is made of aluminum in the shape of a rectangular cylinder, and has a flexibility capable of freely deforming up to a curvature t on a center line thereof when an outer width of the rectangular cylinder is t. .