JP2008091348A - Coated heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coated heating device with an easy detachment from the heated body, and capable of being structured simply and at low cost. <P>SOLUTION: The coated heating device 40 covers a tubular heated body 30 including a curving part 32 having an outer peripheral curving face consisting of an inside curving face located toward a center of curvature and an outside curving face located at a centrifugal side. The device includes a coated main body 41 with flexibility and an insulating property, having a curve face coated part 411 having at least a pair of V-shape notches for at least a part of itself from both peripheral parts with their back parts facing each other to a center part and to be a shape along the outer peripheral curving face with two sides 415 partitioning the above notches joined, a heating body 42 fixed on an inner peripheral face of the coated main body 41 or inside along the inner peripheral face, and a fixing means 43 for coating the outside curving face of the curving part 32 at a center part of the curve face coated part 411 and also fixing the coated main body 41 onto the heated body 30 by setting near and fixing peripheral parts at the inside curving face sides with the notches jointed to narrow their widths. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a coating heating apparatus used when coating and heating an outer peripheral surface of an object to be heated.

  Conventionally, when heating by covering the outer peripheral surface of a heated object, a linear, belt-like or planar heater is fixed to the heated object in a state of being wound around the heated object, Is heating up.

  In particular, when the object to be heated is a pipe such as a water pipe, in Patent Document 1, a heater is formed integrally with the pipe over the entire length in accordance with the shape of the pipe in advance. It is difficult to attach and detach and adjust the tube to a desired shape, and furthermore, it cannot be manufactured at low cost.

Further, in Patent Document 2, the heater is wound in a state of being in close contact with the outer surface of the pipe, and is fixed by covering the outer peripheral surface of the heater with a heat insulating material (see FIGS. 1 and 4). When attaching or detaching the heater for inspection or inspection, it is necessary to wrap the heater and fix it again each time, which is inefficient in terms of time and cost.
JP 2002-146858 A Japanese Patent Laid-Open No. 10-60959

  In view of the above problems, an object of the present invention is to provide a coating heating apparatus that can be molded at a low cost with a simple configuration and can be easily attached to and detached from an object to be heated.

The coating heating apparatus of the present invention is a coating heating apparatus that covers the outer peripheral surface of a tubular heated body having a curved portion having an outer curved surface composed of an inner curved surface positioned on the curvature center side and an outer curved surface positioned on the centrifugal side. And
A curved surface in which at least a part has at least a pair of V-shaped cuts from both peripheral parts facing away from each other toward the central part, and two sides defining the cuts are joined to form a shape along the outer peripheral curved surface A flexible and heat-insulating coating body having a coating portion;
A heating element fixed inside the inner peripheral surface of the covering body or along the inner peripheral surface;
Covering the outer curved surface of the curved portion at the central portion of the curved covering portion and fixing the peripheral portions, which are narrowed by joining the cuts, close to each other on the inner curved surface side, Fixing means for fixing to the heated body;
It is characterized by having.

  The coating heating apparatus of the present invention can be molded easily and inexpensively because of the simple configuration comprising the coating body, the heating element, and the fixing means. Moreover, since the heating element is fixed to the covering main body, it can be easily attached to and detached from the heated body. Furthermore, since the object to be heated is coated and heated by the coating body having heat insulating properties, it is safe to touch from outside.

  The covering body of the covering heating device of the present invention is preferably formed of a rubber sheet, and the covering body is formed by integrally joining a plurality of rubber sheets formed in a predetermined shape. Is preferred. The rubber sheet is preferably a porous body. Further, the rubber sheet is preferably made of silicon rubber. The coated main body made of a rubber sheet has flexibility and heat insulation properties, and reduces the impact on the heated object from the outside.

  The heating element of the coating heating apparatus of the present invention preferably has a heater wire that generates heat when energized. The heating element is preferably a planar heating element.

  The fixing means of the coating heating apparatus of the present invention is preferably a band having detachable locking portions at both ends thereof. Moreover, it is preferable that the said band is being fixed to the outer peripheral surface side of the said coating | coated main body.

  The heated body has a straight portion extending from the curved portion in the axial direction of the heated body, and a part of the covering main body has a cylindrical shape when both ends facing each other are close to each other. It is preferable to have a square-shaped facing covering portion that is flexible and covers the outer peripheral facing of the straight portion. At this time, it is preferable that the heating element is composed of a single sheet heating element, and the curved surface covering portion and the face covering portion are integrally fixed to the sheet heating element. Furthermore, it is preferable that the curved surface covering portion has a substantially elliptical shape in which the peripheral portion is shorter than the central portion.

  The coating heating apparatus of the present invention is a flexible and heat-insulating coating main body developed along the three-dimensional outer peripheral surface of an object to be heated, and fixed to the inner peripheral surface of the coating main body or the inner peripheral surface. And a fixing means for fixing the covering body to the heated body in a state where the covering body covers the three-dimensional outer peripheral surface of the heated body.

  The coating heating apparatus of the present invention can be molded easily and inexpensively because of the simple configuration comprising the coating body, the heating element, and the fixing means. Moreover, since the heating element is fixed to the covering main body, it can be easily attached to and detached from the heated body. Furthermore, since the object to be heated is coated and heated by the coating body having heat insulating properties, it is safe to touch from outside.

  The coating heating apparatus of the present invention includes a coating main body, a heating element, and a fixing means.

  The covering body has a shape developed along the three-dimensional outer peripheral surface of the object to be heated, and is flexible and heat insulating. The shape developed along the three-dimensional outer peripheral surface of the object to be heated is, for example, a rectangular shape if the object to be heated is cylindrical, and an elliptical shape if the object to be heated has a curved portion. Further, by making a cut in a basic shape such as a rectangular shape or an elliptical shape, it can be adapted to a heated object having a protrusion or a curved surface. There is no limitation in particular in the magnitude | size of a coating | coated main body, What is necessary is just to match the shape of a to-be-heated body. If the object to be heated has a complicated shape, a plurality of covered main bodies formed in a predetermined shape for each part may be integrally joined.

  The covering body is preferably a flexible and heat insulating material such as a rubber sheet, and more preferably a porous rubber sheet. For example, silicon rubber, chloroprene rubber, or the like can be used. Moreover, it is preferable that a coating | coated main body consists of a raw material which has heat resistance which can endure the use temperature of a coating | heated heating apparatus.

  The heating element is fixed to the inner peripheral surface of the covering main body or the inside along the inner peripheral surface of the covering main body. The heating element preferably has a heater wire that generates heat when energized, and the heater wire may be a general heater wire such as a nichrome wire that has been conventionally used. The heating element is preferably a planar heating element. There is no particular limitation on the type of the planar heating element, and a generally known planar heating element may be used. However, the planar heating element is preferably flexible enough to prevent the covering heating device from being attached or detached. Furthermore, heating at a desired temperature is possible by combining a heating element with a temperature sensor, a thermostat, or the like.

  The fixing means fixes the covering main body to the heated body while covering the three-dimensional outer peripheral surface of the heated body. The fixing means is not particularly limited in its material and shape as long as the covering main body can be fixed to the heated body. The fixing means is preferably a belt-like or string-like one that can lock both ends thereof, and may be fixed to the outer peripheral surface side of the covering body. Further, a fixing means for locking the locking portion formed integrally with the covering body to the locked portion formed integrally with the covering body may be used. Further, the fixing means preferably has heat resistance that can withstand the operating temperature of the coating heating apparatus, and a woven fabric made of metal, ceramics, resin, or heat-resistant fiber can be used.

  In addition, the to-be-heated body does not have limitation in the shape and size. For example, pipes such as water supply / hot water supply, drainage / sewage, transport pipes for transporting powder, resin, gas, etc. used in various factories, and other than tubular objects may be used, and there is no particular limitation.

  The coating heating apparatus of the above form can be molded at a low cost with a simple configuration, and can be easily attached to and detached from the object to be heated.

  Below, the Example of the covering heating apparatus of this invention is described with a reference example.

<Reference example>
A reference example of the coating heating apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a plan view and a side view of a T-shaped tube 10 that is an object to be heated, FIG. 2 is a perspective view of a coating heating device 20 that covers and heats the T-shaped tube 10, and FIG. FIG. 4 is a perspective view of the sheath heating device 20 mounted on the T-shaped tube 10.

  1 is made of stainless steel having a thickness of 0.3 cm, a cylindrical portion 11 having a diameter of 8.91 cm and a height of 17.14 cm, and a cylindrical portion 12 having a diameter of 8.91 cm branched from the cylindrical portion 11. (Each dimension corresponds to t, D, and H in FIG. 1). The cylindrical part 12 protrudes perpendicularly from the central part of the side surface of the cylindrical part 11, and the length indicated by W in FIG. 1 is 13.055 cm.

  The coating heating device 20 includes a coating main body 21, a heating element 22, and fixing means 23.

  The covering body 21 is made of silicon rubber having a thickness of 1 cm. The covering body 21 is a rectangle of 32 cm × 17 cm shown in FIG. 3, and the long side is substantially equal to the circumference of the cylindrical part 11 and the short side is substantially equal to the height of the cylindrical part 11. The covering body 21 is provided with 5 cm long cuts 211 vertically from the short side at four locations located 5 cm from the long side.

  The heating element 22 is fixed to the inner side surface of the covering main body 21 that is a surface in contact with the T-shaped tube 10 that is a heated body when the covering heating device 20 is used. The heating element 22 is a planar heater having a shape that matches the shape of the covering body 21 as shown in FIG. As the planar heater, a general planar heater in which a heater wire is sandwiched between silicon rubbers is used, and 221 is a lead wire. The planar heater is fixed to the inner surface of the covering body 21 with a silicon-based adhesive.

  The fixing means 23 includes a band 231 and a cover 232 that houses a part of the band 231 fixed to the outer surface of the covering main body 21. The band 231 has a length of 41.5 cm and a width of 2.5 cm, and is a hook-and-loop fastener with the front and back sides being hook surfaces and loop surfaces, respectively. The cover 232 is made of silicon rubber having a thickness of 2 mm, and is a cylinder in which two edges are stitched together by aligning one end of a strip-shaped sheet a having a length of 36.5 cm and a width of 4 cm and a strip-shaped sheet b having a length of 31.5 cm and a width of 4 cm. Is. Both ends of the band 231 are inserted into the cover 232 in a state extending 5 cm from the end of the band-shaped sheet b, and are fixed with a silicon-based adhesive. The cover 232 is fixed with a silicon-based adhesive, one on each edge, in a state where both ends of the cover 232 are substantially aligned with the short side of the covering body 21 along the long side direction of the covering body 21. At this time, the surface of the belt-like sheet a of the cover 232 is bonded.

  The covering heating apparatus 20 having the above-described configuration is attached to a T-shaped tube 10 that is an object to be heated as shown in FIG. The covering heating apparatus 20 covers the T-shaped tube 10 so that the inner peripheral surface thereof is in contact with the T-shaped tube 10. The fixing means 23 winds the band 231 around the both ends of the cylindrical portion 11 of the T-shaped tube 10 via the covering main body 21, and fixes both ends of the band 231 with the hook surface and the loop surface. Since the covering body 21 has a cut 211, the central portion on the short side of the covering body 21 is along the side surface of the cylindrical portion 12 of the T-tube 10.

  In order to heat the T-shaped tube 10 by using the coating heating device 20, by applying a predetermined voltage from the lead wire 221, a current flows through the heater wire of the sheet heater of the heating element 22, and the electric resistance heat generation of the heater wire causes The heater wire is heated, and this heat is transferred from the planar heater (heating element 22) to the T-shaped tube 10 to heat the T-shaped tube 10.

  Further, when removing the covering heating device 20 from the T-shaped tube 10, since the heating element 22 and the fixing means 23 are fixed to the covering main body 21, it is easy to simply disengage the both ends of the band 231. Can be removed.

(Example)
An embodiment of the coating heating apparatus of the present invention will be described with reference to FIGS. FIG. 5 is a plan view and a side view of the curved pipe 30 that is the object to be heated, FIG. 6 is a perspective view showing a part of a coating heating apparatus 40 that coats and heats the curved pipe 30, and FIG. FIG. 8, FIG. 8 and FIG. 9 are development views of the covering body and the heating element. FIG. 10 is a perspective view in which the covering heating device 40 is mounted on the bent tube 30.

  The curved pipe 30 in FIG. 5 is made of stainless steel having a thickness of 0.3 cm, has a diameter of 8.91 cm, a straight cylindrical portion 31 having a height of 20 cm, and a diameter of 8.91 cm extending from one end of the cylindrical portion 31. It consists of a curved portion 32 (the dimensions correspond to t, D, and L in FIG. 5). The curved portion 32 is bent at 90 °, and the bending radius (the radius of curvature of the central portion of the tube) indicated by R in FIG. 5 is 7.62 cm.

  The coating heating device 40 includes a coating main body 41, a heating element 42, and fixing means 43.

  The covering body 41 is made of silicon rubber having a thickness of 1.5 cm. The covering body 41 includes two parts, a sheet 411 and a sheet 412. A sheet 411 covering the curved portion 32 of the bent tube 30 is obtained by cutting an elliptical sheet having a maximum diameter of 32 cm and a minimum diameter of 19 cm into a shape shown in FIG. The sheet 411 has a shape in which two flat (crushed) hexagonal shapes 411a are integrally combined at the center of the long sides facing each other of the rectangular shape 411b. The sheet 411 has a three-dimensional shape bent inward as shown in the cross-sectional view of FIG. 7 by fixing the cut-off portions so that adjacent sides 415 are in contact with each other. The sheet 412 is a rectangle of 32 cm × 20 cm, the long side is substantially equal to the circumference of the cylindrical part 31, and the short side is substantially equal to the height of the cylindrical part 31.

  The heating element 42 is fixed to the inner side surface of the covering main body 41 that is a surface in contact with the curved tube 30 that is a heated body when the covering heating apparatus 40 is used, by a silicon-based adhesive. The heating element 42 is composed of a single sheet heater having a shape shown in FIG. The heating element 42 has a three-dimensional shape bent inward as shown in the cross-sectional view of FIG. 7 by being fixed so that the adjacent sides 425 are in contact with each other. The covering body 41 having a three-dimensional shape that is also bent inward is covered by the heating element 42 with the entire inner peripheral surface thereof.

  As the planar heater, a general planar heater in which a heater wire is sandwiched between silicon rubbers is used. In addition, although the shape shown in FIG. 9 was employ | adopted for the heat generating body 42 of a present Example, it should select suitably according to the shape of a coating | coated main body.

  The fixing means 43 includes a band 431 and a cover 432 that houses a part of the band 431 fixed to the outer surface of the covering main body 41. The fixing means 43 of the present embodiment is the same as the fixing means 21 of the reference example. The cover 432 is fixed along the maximum radial direction of the sheet 411 of the covering body 41 and the long side direction of the sheet 412. One cover 432 is fixed to each of the four portions of the center portion of the sheet 411, both the edge portions of the sheet 412, and the center portion with both ends thereof substantially aligned with the edges of the covering body 41.

  The covering heating apparatus 40 having the above-described configuration is attached to a curved pipe 30 that is a heated object as shown in FIG. The covering heating device 40 covers the bent tube 30 so that the inner peripheral surface thereof is in contact with the bent tube 30. The fixing means 43 wraps the band 231 around the circumference of the cylindrical portion 31 of the bent tube 30 and the bent portion of the bent portion 32 through the covering main body 41, and locks both ends of the band 431 to the object to be heated. Fix the coating heating device.

  In order to heat the bent tube 30 using the covering heating device 40, a predetermined voltage is applied from the lead wire 421, whereby a current flows through the heater wire of the sheet heater of the heating element 42, and the heater wire is heated by electric resistance heat generation of the heater wire. The wire is heated, and this heat is transferred from the planar heater to the bent tube 30 to heat the bent tube 30.

  Further, when removing the covering heating device 40 from the bent tube 30, since the heating element 42 and the fixing means 43 are fixed to the covering main body 41, it is easily removed simply by disengaging both ends of the band 431. be able to.

  In addition, said Example is only an Example of this invention, The shape, dimension, etc. of a to-be-heated body, a coating | coated main body, a heat generating body, a fixing means, etc. are not this limitation.

It is the top view and side view of a T-shaped tube which are to-be-heated bodies of the covering heating apparatus of a reference example. It is a perspective view of the covering heating apparatus of a reference example. It is the expanded view which looked at the coating heating apparatus of the reference example from the inside. It is the perspective view which mounted | wore the to-be-heated body with the coating heating apparatus of the reference example. It is the top view and side view of the curved pipe which are the to-be-heated bodies of the coating heating apparatus of an Example. It is a perspective view of the covering heating apparatus of an Example. It is sectional drawing in I of FIG. It is an expanded view of the coating | coated main body of the coating heating apparatus of an Example. It is an expanded view of the heat generating body of the covering heating apparatus of an Example. It is the perspective view which mounted | wore the to-be-heated body with the coating | heated heating apparatus of the Example.

Explanation of symbols

20, 40: coating heating device 10, 30: heated body 21, 41: coating main body 22, 42: heating element 23, 43: fixing means

Claims (7)

A covering heating device that covers the outer peripheral surface of a tubular heated body having a curved portion having an outer curved surface consisting of an inner curved surface located on the curvature center side and an outer curved surface located on the centrifugal side,
A curved surface in which at least a part has at least a pair of V-shaped cuts from both peripheral parts facing away from each other toward the central part, and two sides defining the cuts are joined to form a shape along the outer peripheral curved surface A flexible and heat-insulating coating body having a coating portion;
A heating element fixed inside the inner peripheral surface of the covering body or along the inner peripheral surface;
Covering the outer curved surface of the curved portion at the central portion of the curved covering portion and fixing the peripheral portions, which are narrowed by joining the cuts, close to each other on the inner curved surface side, Fixing means for fixing to the heated body;
The coating heating apparatus characterized by having.   The coating heating apparatus according to claim 1, wherein the curved surface covering portion has a substantially elliptical shape in which the peripheral portion is shorter than the central portion. The heated body has a straight part extending from the curved portion in the axial direction of the heated body,
The part of the covering main body has a rectangular facing covering portion that becomes a cylindrical shape when both opposite ends facing each other are close to each other and covers the outer peripheral facing surface of the straight portion and has a heat insulating property. Coating heating device.   The coating heating apparatus according to claim 3, wherein the heating element is composed of a single sheet heating element, and the curved surface covering portion and the facing coating portion are integrally fixed to the sheet heating element.   The coating heating apparatus according to claim 1, wherein the coating main body is formed of a rubber sheet.   The coating heating apparatus according to claim 1, wherein the heating element has a heater wire that generates heat when energized.   The coating heating apparatus according to claim 1, wherein the fixing means is a belt having detachable engaging portions at both ends thereof.

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