JPH09152256A - Draining pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a draining pipe, contriving the improvement of workability and avoiding troubles such as the disconnection of a cord heater and the like. SOLUTION: A draining pipe 1 is provided with an inner pipe 52, a heating device 2, provided with both-surface adhesive sheets 3, 4, whose one side is adhered to the surface of the inner pipe and the other side is adhered to a meandering cord heater 5 with a space, and a heat resistant sheet 6, adhered to the other side of both-surface adhesive sheet so as to cover the cord heater, and a covering member 54, covering the heating device, to simplify the bonding work of the heating device 2 to the inner pipe 52 and avoid the disconnection and the like of the cord heater 5 by supporting the cord heater by the both- surface adhesive sheets 3, 4 and the heat resistant sheet 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pipe for flowing drainage from a cooler or the like.

[0002]

2. Description of the Related Art For example, Japanese Utility Model Publication No. 1-23718 discloses a thin heat-conductive member adhered to the surface over substantially the entire length thereof, a flexible tube adhered over substantially the entire length of the heat-conductive member, A drainage pipe (hereinafter referred to as a first conventional technique) including a freeze prevention heater that is passed through a tube is described.

FIG. 6 is a top view of a conventional drainage pipe (hereinafter referred to as a second prior art), and FIG. 7 is a side view of the drainage pipe shown in FIG. 6. The drainage pipe 50 is made of rubber, for example. A substantially L-shaped inner pipe 52 having a bent portion 51, and the inner pipe 52
A cord heater 53 spirally wound on the surface of the cord heater 53 so as not to contact each other, and a coating member 54 made of, for example, rubber that coats the surfaces of the cord heater 53 and the inner pipe 52.

[0004]

In the first prior art described above, in addition to the work of bonding the tube to the heat conductive member, the work of passing the antifreezing heater through the tube is required, and the work of manufacturing the drainage pipe is The problem of becoming complicated occurs. Further, the adhesion area between the heat conductive member and the tube is small, and for example, there is a risk that the tube may come off the heat conductive member at a part thereof and the heating of the drainage pipe may be reduced.

Further, in the second conventional technique, the length of the cord heater 53 is determined, and it is necessary to wind the cord heater 53 with care so that there is no excess or shortage after the winding around the inner pipe 52. There is a problem that the work becomes extremely complicated. Further, when the cord heater 53 is wound, it is necessary to wind the cord heater 53 so as not to loosen the cord heater 53, and the winding work becomes more complicated, and when the cord heater 53 is wound too hard to prevent loosening, The heater 53 may be broken.

The present invention is intended to solve the above problems, and it is an object of the present invention to improve the workability and to provide a drainage pipe which avoids a failure such as disconnection of a cord heater.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention according to claim 1 provides an inner tube, one surface of which is attached to the surface of the inner tube, and the other surface of which is spaced apart. A heating device having a double-sided adhesive sheet which is meandering and has a code heater attached thereto, and a heat-resistant sheet which is attached and covers the code heater on the other surface of the double-sided adhesive sheet, and the heating device. A drainage pipe having a covering member is provided.

Further, the invention of claim 2 is such that a flexible inner tube having a bent portion, a heating device attached to the surface of the inner tube, and a covering member for covering the heating device and the inner tube. And a heating device comprising a first and a second double-sided adhesive sheet in which one surface is adhered to the inner tube with a space corresponding to the bent portion and one surface is attached, and a first and a second double-sided adhesive sheet. A cord heater that meanders on the other surface with a space therebetween and is attached to the first and second double-sided adhesive sheets, and a double-sided adhesive sheet and the code heater attached to the double-sided adhesive sheet. Provided is a drainage pipe having a heat-resistant sheet for covering.

Further, according to the invention of claim 3, a flexible inner pipe having a bent portion, a heating device attached to the surface of the inner pipe, and a covering member for covering the heating device and the inner pipe. With and
The heating device includes first and second double-sided adhesive sheets, one surface of which is attached to the inner tube with an interval corresponding to the bent portion,
The second double-sided adhesive sheet is attached to the other surface in a meandering manner with a gap, and a plurality of the first and second double-sided adhesive sheets are provided with a gap and the length of the passed portion is Provided is a drainage pipe having a code heater having a different height depending on the bent portion of the inner pipe, and a heat-resistant sheet that covers the double-sided adhesive sheet and the code heater attached to the double-sided adhesive sheet. is there.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the drainage pipe of the invention according to claims 1 and 2 of the present application will be described below in detail with reference to the drawings. In the following invention, the same components as those of the conventional drainage pipe described with reference to FIGS. 5 and 6 are designated by the same reference numerals, and detailed description thereof will be omitted. 1 is a top view of the drain pipe, FIG. 2 is a side view of the drain pipe, FIG. 3 is a top view of the heating device,
FIG. 4 is a partial cross-sectional view of the heating device.

Reference numeral 1 is a drainage pipe according to the inventions of the first and second claims of the present application, and this drainage pipe 1 is connected to a cooling device of a prefabricated freezer or a refrigerator, for example. Further, the drainage pipe 1 has a bent portion 51, and the inner pipe 52 and the inner pipe 52
The heating device 2 is attached to the surface of the inner tube 52, and the inner tube 52 and the covering member 54 that covers the heating device. The heating device 2 has first and second double-sided adhesive sheets 3 and 4 each having an adhesive (not shown) provided on both sides, and one surface of which is attached to the surface of the inner pipe 52, and the first and second of these. A code heater 5 such as a sheathed heater attached to the other surface of the second double-sided adhesive sheets 3 and 4, and a cord heater 5 attached to the other surface of the first and second double-sided adhesive sheets 3 and 4. It is composed of a heat-resistant sheet 6 such as a non-woven fabric that covers the surface and the cord heater 5. The first and second double-sided adhesive sheets 3 and 4 are provided at intervals 21 corresponding to the bent portion 51 of the drainage pipe 1. In addition, the cord heaters 5 are respectively the first and second
The double-sided adhesive sheets 3 and 4 are indicated by broken lines in FIG.
Adhering part heaters 7, 8, 9 which are meanderingly adhered as shown by the dotted line, and a pair of connecting part heaters 10 passed between the first and second double-sided adhesive sheets 3, 4. It consists of

Further, 11 and 12 are molds which are respectively provided on the first double-sided adhesive sheet 3 and which are the connecting portions between the heaters 7 and 8 for the attaching portions and the power cords 13 and 14. When the heating device 2 configured as described above is provided on the surface of the inner pipe 52, the connecting portion heater 10 of the cord heater 5 is made to correspond to the bent portion 51, and the first and second double-sided adhesive sheets 3, 4 are provided. One surface is attached to the surface of the inner pipe 52.

According to the above embodiment, when the code heater 5 is provided on the inner pipe 52, the first and second double-sided adhesive sheets 3, 4 of the heating device 2 to which the code heater 5 is attached in advance.
It suffices that one surface of the heating device 2 be attached to the surface of the inner pipe 52, and the work of attaching the heating device 2 to the inner pipe 52, that is, the work of attaching the cord heater 5 to the inner pipe 52 can be simplified. The code heater 5 is adhered to the first and second double-sided adhesive sheets 3 and 4, and is supported by the heat-resistant sheet 6 to avoid disconnection of the heaters 7, 8 and 9 of the cord heater 5, especially the adhered portions. can do.

Further, the attachment portion heater 7 of the code heater 5 is
Since 8 and 9 are adhered to the first and second double-sided adhesive sheets 3 and 4, and are covered and supported by the heat-resistant sheet 6, the adhered portion heaters 7, 8, 9 are attached when the heating device 2 is attached.
The deviation can be avoided, the predetermined interval of the heater can be maintained, and as a result, the drain pipe 1 can be heated uniformly.

Further, since the heating device 2 is divided into the first double-sided adhesive sheet 3 and the second double-sided adhesive sheet 4 with the gap 21 and is connected by the joint heater 10, the gap 21 and the joint heater 10 are connected. It suffices to provide the drain pipe 1 corresponding to the bent portion 51 of the drain pipe 1, and the drain pipe 1 including the bent portion 51
Also, the heating device 2 can be easily provided, and the bent portion 51 can be heated by the connecting portion heater 10.

An embodiment of the invention according to claim 3 of the present application will be described below with reference to FIG. In this embodiment, the configuration other than the code heater of the heating device is the same as that of the above-mentioned embodiment, and the same reference numerals as those in FIG. 3 are given and the detailed description thereof is omitted. As shown in FIG.
The code heater 5 is wired as indicated by the one-dot chain line in FIG. 1, and a plurality of, for example, six connecting portion heaters 31 of the code heater 5 are provided in the space 21 between the first and second double-sided adhesive sheets 3, 4. To 36, the lengths of the connecting portion heaters 33 and 34 located in the outermost vicinity of the bent portion 51 of the drainage pipe 1 among these connecting portion heaters are the same as those of the other connecting portion heaters 31 and 3.
The connecting portion heaters 32 and 35, which are longer than the connecting portion heaters 31 and 36, are longer than the connecting portion heaters 31 and 36, and are longer than the connecting portion heaters 31 and 36.
The connecting portion heaters 31 and 36, which are shorter than the connecting portion heaters 3 and 34 and located in the vicinity of the innermost portion of the bent portion 51, are the other connecting portion heaters 3.
The wiring is shorter than 2, 33, 34, and 35.

Therefore, when the code heater 5 is provided in the inner pipe 52 as in the above embodiment, the code heater 5 is previously prepared.
One side of the first and second double-sided adhesive sheets 3 and 4 of the heating device 2 to which is attached may be attached to the surface of the inner pipe 52,
Attaching the heating device 2, that is, the inner tube 52 of the cord heater 5.
It is possible to simplify the attachment work to the cord heater 5 and avoid breaking the cord heater 5.

Further, the attachment heaters 7, 8, 9 can be prevented from being displaced when the heating device 2 is attached, and a predetermined heater interval can be maintained. As a result, the drain pipe 1 can be heated uniformly. You can Further, the heating device 2 is divided into a first double-sided adhesive sheet 3 and a second double-sided adhesive sheet 4 with a gap 21 therebetween, and a plurality of connecting portion heaters 31 to 3 having different lengths.
Since it is connected by 6, the space 21 and the connecting portion heater 10 may be provided so as to correspond to the bent portion 51 of the drain pipe 1, and the heating device 2 can be easily installed in the drain pipe 1 including the bent portion 51. And the connecting portions heaters 31 to 36 can be provided on the bent portion 51 at substantially equal intervals, and as a result, the bent portion 51 can be heated substantially uniformly by the connecting portion heaters 31 to 36. You can

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the claims.

[0020]

The present invention is the drainage pipe as described above. According to the invention of claim 1, when the cord heater is provided on the inner pipe, the double-sided adhesive sheet of the heating device is preliminarily attached with the cord heater. One side may be attached to the inner tube surface,
The work of attaching the heating device to the inner pipe, that is, the work of attaching the cord heater to the inner pipe can be simplified.

Further, since the code heater is adhered to the double-sided adhesive sheet and is covered and supported by the heat resistant sheet, it is possible to avoid disconnection of the code heater, and
It is possible to prevent the cord heater from being displaced when the heating device is attached, and it is possible to maintain a predetermined interval between the heaters, and as a result, it is possible to uniformly heat the drain pipe. Further, according to the invention of claim 2, as in the invention of claim 1, when the code heater is provided on the inner pipe, one surface of the double-sided adhesive sheet of the heating device to which the code heater is attached in advance is It suffices to attach the heating device to the inner pipe, that is, the attaching work of the heating device to the inner pipe, that is, the attaching work of the cord heater to the inner pipe can be simplified.

Further, since the code heater is attached to the double-sided adhesive sheet and is covered and supported by the heat resistant sheet, it is possible to avoid the code heater from being displaced when the heating device is attached and to prevent the code heater from breaking. The predetermined interval can be maintained, and as a result, the drain pipe can be heated uniformly. Further, since the heating device is divided into the first double-sided adhesive sheet and the second double-sided adhesive sheet with a space therebetween and is connected by the connecting portion heater, the space and the connecting portion heater correspond to the bent portion of the drain pipe. The heating device can be easily provided even in the drain pipe having the bent portion, and the bent portion can be heated by the connecting portion heater, so that the drainage can be well maintained. .

Further, according to the invention of claim 3, as in the inventions of claims 1 and 2, when the code heater is provided on the inner pipe, both sides of the heating device to which the code heater is previously attached are attached. It suffices if one surface of the adhesive sheet is attached to the surface of the inner pipe, and the work of attaching the heating device to the inner pipe, that is, the work of attaching the cord heater to the inner pipe can be simplified.

Further, since the code heater is adhered to the double-sided adhesive sheet and is covered and supported by the heat resistant sheet, it is possible to avoid the code heater from being displaced when the heating device is attached and to prevent the code heater from breaking. The predetermined interval can be maintained, and as a result, the drain pipe can be heated uniformly. Furthermore, it suffices if the heaters for the space and the connecting portion are provided in correspondence with the bent portions of the drainage pipe, and the heating device can be easily installed in the drainage pipe provided with the bent portion, and a plurality of heaters are provided in the bent portion. The book connecting portion heaters can be provided at substantially equal intervals, and as a result, the bent portion can be heated almost uniformly by the connecting portion heater, and the drainage can be more favorably maintained.

[Brief description of the drawings]

FIG. 1 is a top view of a drainage pipe.

FIG. 2 is a side view of the drain pipe.

FIG. 3 is a top view of the heating device.

FIG. 4 is a partial cross-sectional view of a heating device.

FIG. 5 is a top view of the heating device.

FIG. 6 is a top view of a conventional drainage pipe.

FIG. 7 is a side view of a conventional drainage pipe.

[Explanation of symbols]

 1 Drain Pipe 2 Heating Device 3 First Double-sided Adhesive Sheet 4 Second Double-sided Adhesive Sheet 5 Code Heater 6 Heat Resistant Sheet 7 Adhesive Heater 8 Adhesive Heater 9 Adhesive Heater 10 Connection Heater 31 Connection Heater 32 Connection Part heater 33 Connection part heater 34 Connection part heater 35 Connection part heater 36 Connection part heater 51 Bent part 52 Inner tube 54 Covering member

Claims (3)

[Claims] 1. An inner tube, a double-sided adhesive sheet having one surface attached to the surface of the inner tube, and a code heater attached to the other surface in a meandering manner at intervals, and a double-sided adhesive sheet of the double-sided adhesive sheet. A drainage pipe comprising a heating device having a heat-resistant sheet adhered to the other surface of the cord heater and a covering member for covering the heating device. 2. A flexible inner tube having a bent portion, a heating device attached to the surface of the inner tube, and a covering member for covering the heating device and the inner tube. 1st, 2nd which one side is pasted to the inner tube with a space corresponding to the bent portion
A double-sided adhesive sheet, and a cord heater that is meandered and adhered to the other surface of the first and second double-sided adhesive sheets with a space therebetween and is passed between the first and second double-sided adhesive sheets. A drainage pipe having a double-sided adhesive sheet and a heat-resistant sheet covering the code heater attached to the double-sided adhesive sheet. 3. A flexible inner tube having a bent portion, a heating device attached to the surface of the inner tube, and a covering member for covering the heating device and the inner tube. 1st and 2nd one side is pasted to the inner tube with a space corresponding to the bent portion
Of the double-sided adhesive sheet and the other surface of the first and second double-sided adhesive sheets are attached in a meandering manner with a space therebetween, and at the same time, there are a plurality of gaps between the first and second double-sided adhesive sheets. A cord heater, which has been passed over the main tube and has different lengths depending on the bent portion of the inner tube, and a double-sided adhesive sheet and a heat-resistant sheet covering the code heater attached to the double-sided adhesive sheet. A drainage pipe characterized by having.