Heater device and method for manufacturing heater device

Abstract

To provide a heater device that covers and heats an object to be heated, the heater device having a structure where a lead-out part for leading a temperature sensor out of the device is less prone to damage and the temperature sensor is less prone to coming loose.SOLUTION: A heater device includes: a heater body that covers and heats an object to be heated, the heater body having at least an inner skin material in contact with the object to be heated, an outer skin material, and a heating element surrounded by the inner skin material and the outer skin material; a temperature sensor that detects the temperature of the object to be heated, the temperature sensor having a thermocouple or a resistance temperature detector that is led from a leading-end side located on the object-to-be-heated side, through the interior of the heater body, to the outside from a lead-out part of the outer skin material; and a reinforcing sheet secured to the outer skin material in the area covering the lead-out part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a heater device that covers and heats an object to be heated. [Background technology]

[0002] Patent Document 1 describes a mantle heater for heating pipes, etc. The mantle heater is made up of a laminated body including an inner skin material on the pipe side, an outer skin material that forms the outer surface, a heating element with a heating wire sewn onto it, and a heat insulating material, and is used by wrapping it around the pipe to heat the pipe.

[0003] The mantle heater may be equipped with a temperature sensor, such as a thermocouple, that can detect the temperature of the pipe. By controlling the power supply to the heater based on the temperature detected by the temperature sensor, the pipe can be heated to a predetermined temperature. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3752583 Summary of the Invention [Problem to be solved by the invention]

[0005] The tip of the thermocouple is placed on the heater piping side, and is pulled out from the tip side through the laminate to the outside of the outer sheath material. Measurements are then performed by connecting the lead wire connected to the thermocouple wire to a measuring instrument.

[0006] However, if the conductor is pulled, for example, and a force is applied in the direction of pulling out the thermocouple, the part of the heater where the thermocouple is pulled out (penetrating) from the laminate may be damaged, causing the thermocouple to come loose.

[0007] The present invention aims to provide a heater device that covers and heats an object to be heated, having a structure in which the drawer section for drawing the temperature sensor out of the device is less likely to be damaged and the temperature sensor is less likely to come loose. [Means for solving the problem]

[0008] The gist of the present invention for solving the above problems is as follows.

[0009] (1) A heater body that includes at least an inner skin material that contacts an object to be heated, an outer skin material, and a heating element that is surrounded by the inner skin material and the outer skin material, and that covers and heats the object to be heated; a temperature sensor for detecting the temperature of the object to be heated, the temperature sensor having a thermocouple or a resistance thermometer sensor that is disposed on the side of the object to be heated, passes through the heater body from a tip end side thereof, and is drawn out from a lead-out portion of the outer cover material; a reinforcing sheet fixed to the outer skin material in an area covering the drawer portion; A heater device comprising:

[0010] (2) The heater device according to (1) above, characterized in that a portion of the thermocouple or the resistance temperature detector drawn out from the drawing portion is sandwiched and fixed between the reinforcing sheet and the outer cover material.

[0011] (3) The heater device according to (1) above, wherein the reinforcing sheet is fixed to the outer cover material by sewing.

[0012] (4) The heater device according to (1) above, wherein the reinforcing sheet is a fluororesin sheet or a fluororesin-coated sheet.

[0013] (5) The heater device according to (1) above, wherein the reinforcing sheet is a silicone resin-coated glass fiber cloth.

[0014] (6) The heater device according to (1) above, characterized in that the sleeve, which is the connection part with the conductor of the thermocouple or the resistance thermometer, is arranged adjacent to the outer side of the reinforcing sheet.

[0015] (7) A heater device according to any one of (1) to (6) above, characterized in that a sleeve, which is a connection part between the thermocouple or the resistance thermometer and the conductor, is sewn and fixed to the outer cover material.

[0016] (8) The heater device according to (7) above, wherein the sleeve is fixed by sewing at least one of the connection portion between the sleeve and the conductor and the periphery of the sleeve.

[0017] (9) A heater body that includes at least an inner skin material that contacts an object to be heated, an outer skin material, and a heating element that is surrounded by the inner skin material and the outer skin material, and that covers and heats the object to be heated; a temperature sensor that detects the temperature of the object to be heated, the temperature sensor having a thermocouple or a resistance temperature detector that is drawn out from a leading end side that is disposed on the side of the object to be heated, through the heater body, and out from a lead-out portion of the outer cover material; A method for manufacturing a heater device, comprising: A method for manufacturing a heater device, comprising the step of arranging a reinforcing sheet in an area of ​​the outer cover material that covers the drawer portion. [Effects of the Invention]

[0018] A heater device that covers and heats an object to be heated can be provided that has a structure in which the drawer portion for drawing the temperature sensor out of the device is not easily damaged and the temperature sensor is not easily removed. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a perspective view showing the configuration of a heater device 1 attached to a cylindrical pipe 100. FIG. [Figure 2]2 is a cross-sectional view showing the structure of a portion of the heater device 1 where a thermocouple 50 is attached. FIG. [Figure 3] 10 is a cross-sectional view showing a different structure of the portion where the thermocouple 50 of the heater device 1 is attached. FIG. [Figure 4] FIG. 10 is a diagram showing the cross-sectional structure of the portion where the reinforcing sheet 60 is fixed by the sewing thread 60a, as viewed from the sleeve 50b side. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment will be described with reference to the drawings. A heater device 1 according to this embodiment is attached to the outer circumferential surface of a pipe 100, which is an object to be heated, and heats the pipe 100. For example, the heater device 1 can heat the pipe 100 in order to prevent by-products and exhaust gas from condensing and depositing inside the pipe 100 through which gas flows.

[0021] FIG. 1 is a perspective view showing the configuration of a heater device 1 attached to a cylindrical pipe 100. FIG. 2 is a cross-sectional view showing the structure of a portion of the heater device 1 where a thermocouple 50 is attached. In FIG. 1, the X-axis, Y-axis, and Z-axis are perpendicular to one another, and the pipe 100 extends in the X-axis direction. Note that, in this embodiment, an example in which the heater device 1 is attached to the pipe 100 extending in the X-axis direction will be described, but the heater device 1 can also be attached to a bent pipe 100. In this case, the heater device 1 can be formed into a bent shape so as to fit along the bent portion of the pipe 100.

[0022] The heater device 1 is disposed along the circumferential direction of the pipe 100, and has a pair of butting portions 1A, 1B that are butted against each other in the circumferential direction of the pipe 100. The heater device 1 can be attached to the pipe 100 by bending the heater device 1 along the pipe 100 so as to cover the outer peripheral surface of the pipe 100 and butting the pair of butting portions 1A, 1B together. When the heater device 1 is attached to the pipe 100, electricity is applied to the heater device 1, which heats and keeps the pipe 100 warm.

[0023] The heater device 1 of this embodiment includes an inner cover material 20, a heating element 40, a heat insulating material 30, an outer cover material 22, a thermocouple 50, a reinforcing sheet 60, and a sewing thread 70 (FIG. 2). Of these, the inner cover material 20, the heating element 40, the outer cover material 22, and other components are stacked together to form the heater main body 10. The heater main body 10 covers and heats an object to be heated. In the heater device 1 of this embodiment, the heater main body 10 is stacked in the following order from the side of the piping 100 to be heated (heating side). The inner cover material 20 and the outer cover material 22 form an enclosure that surrounds the heating element 40 and the heat insulating material 30.

[0024] The inner cover material 20 forms the inner surface of the heater device 1 and is in contact with the outer peripheral surface of the pipe 100 that is the object to be heated. Heat from the heating element 40 is transferred to the pipe 100 via the inner cover material 20.

[0025] The outer cover material 22 constitutes the outer surface of the heater device 1. From predetermined positions on the outer cover material 22, the thermocouple 50, a power cord 40c connected to the heater wire 40a of the heating element 40, and the like are pulled out to the outside of the device. In this embodiment, as will be described later, a reinforcing sheet 60 is fixed to the surface of the outer cover material 22 in an area covering the pull-out portion P from which the thermocouple 50 is pulled out, thereby reinforcing the pull-out portion P of the outer cover material 22. The thermocouple 50 is fixed to the outer cover material 22 by this reinforcing sheet 60. In addition, the sleeve 50b of the thermocouple 50 is fixed to the outer cover material 22 by a sewing thread 70.

[0026] Here, the lead-out portion P refers to a hole in the outer cover material 22 through which a part of the temperature sensor is led out and the surrounding area therearound. In this embodiment, this is the portion where a sheath portion 50a of a thermocouple 50 (described later) extending from the piping side is led outward from the outer cover material 22.

[0027] The inner cover material 20 and the outer cover material 22 may be made of resin and may have a porous structure. The inner cover material 20 and the outer cover material 22 may be made of the same type of resin or different types of resin.

[0028] The inner cover material 20 and the outer cover material 22 may be made of any material that can withstand the heat transmitted from the heating element 40 (heater wire 40a), and the material is not particularly limited. For example, fluororesin sheets made of fluororesins such as PTFE (polytetrafluoroethylene), PFA (tetrafluoroethylene-perfluoroalkoxyethylene copolymer), FEP (tetrafluoroethylene-hexafluoropropylene copolymer), PCTFE (polychlorotrifluoroethylene), ETFE (tetrafluoroethylene-ethylene copolymer), ECTFE (chlorotrifluoroethylene-ethylene copolymer), and PVDF (polyvinylidene fluoride) may be used; fluororesin fiber cloth (woven fabric) made by weaving the above-mentioned fluororesin fibers; inorganic fiber cloth (woven fabric) made of inorganic fibers such as glass fiber, silica fiber, alumina fiber, and silica-alumina fiber; fluororesin-coated inorganic fiber cloth obtained by coating the above-mentioned inorganic fiber cloth with the above-mentioned fluororesin; and silicone resin-coated inorganic fiber cloth obtained by coating the above-mentioned inorganic fiber cloth with a silicone resin.

[0029] The inner cover material 20 and the outer cover material 22 may be made of a resin material other than the above-mentioned fluorine-based resin, such as polyamide, polycarbonate, polyacetal, polybutylene terephthalate, modified polyphenylene ether, polyphenylene sulfide, polysulfone, polyether sulfone, polyarylate, polyether ether ketone, polyphthalamide, polyimide, polyetherimide, or polymethylpentene.

[0030] The heat insulating material 30 insulates and keeps the heat from the heating element 40 and the pipe 100 so that heat does not escape to the outside. The heat insulating material 30 can be formed, for example, from an inorganic fiber sheet or an organic fiber sheet, and is preferably formed from a non-flammable or flame-retardant material. The inorganic fiber sheet can be made of an inorganic fiber material such as glass fiber, ceramic fiber, or silica fiber. Alternatively, an inorganic fiber material can be needled and formed into a sheet using an inorganic binder such as colloidal silica, alumina sol, or sodium silicate as needed. On the other hand, the organic fiber sheet can be made of a sheet made of fibers such as aramid, polyamide, or polyimide.

[0031] The heating element 40 generates heat when energized and heats the pipe 100. The heating element 40 includes a heater wire 40a that generates heat when energized, an inorganic fiber sheet 40b to which the heater wire 40a is sewn, and a power cord 40c connected to the heater wire 40a. The heater wire 40a can be arranged in a predetermined arrangement pattern so that the entire area of ​​the pipe 100 covered by the heater device 1 can be uniformly heated. In the heating element 40, the inorganic fiber sheet 40b can be arranged on the inner cover material 20 side, and the heater wire 40a can be arranged on the insulating material 30 side of the inorganic fiber sheet 40b. An end of the heater wire 40a is connected to the cord 40c and drawn out to the outside of the heater device 1. The cord 40c is connected to a power source (not shown) arranged outside the heater device 1. The heater wire 40a can be heated by passing electricity from the power source through the heater wire 40a.

[0032] The inorganic fiber sheet 40b is a sheet-like member made of inorganic fibers such as glass fiber, ceramic fiber, or silica fiber. The inorganic fiber sheet 40b may be composed of one layer or multiple layers. When the inorganic fiber sheet 40b is composed of multiple layers, the layers may be made of the same material or different materials.

[0033] The thermocouple 50 is a temperature sensor that detects the temperature of the pipe 100, which is the object to be heated. The thermocouple 50 has its tip, which detects the temperature, positioned on the side of the object to be heated. Specifically, the tip is positioned on one side of the inner cover material 20 (the pipe 100 side or the heating element 40 side). That is, the tip of the thermocouple 50 is positioned between the pipe 100 and the inner cover material 20, or between the inner cover material 20 and the heating element 40. The thermocouple 50 is positioned by passing from its tip side through the heater main body 10 and extending to the outside. In the present embodiment shown in FIG. 2, a structure is shown as an example in which the tip of the thermocouple 50 is positioned between the pipe 100 and the inner cover material 20, and is passed through the heater main body 10 and extended to the outside of the heater main body 10 from an extension portion P of the outer cover material 22.

[0034] As described above, the tip side of the thermocouple 50 may be disposed between the inner cover material 20 and the heating element 40. Fig. 3 shows a cross-sectional view of the heater device 1' when the tip side of the thermocouple 50 is disposed between the inner cover material 20 and the heating element 40.

[0035] The thermocouple 50 of this embodiment includes a sheath portion 50a enclosing a thermocouple wire, a conductive wire 50c connected to the thermocouple wire, and a sleeve 50b forming a connection between the thermocouple wire and the conductive wire. The sleeve 50b is fixed to the surface of the outer cover material 22. The sheath portion 50a extending from the sleeve 50b penetrates the outer cover material 22, the insulating material 30, the heating element 40, and the inner cover material 20 as described above, with its tip exposed to the piping (heating) side. The sheath portion 50a is bent at the position where it penetrates from the inner cover material 20 to the piping side and extends in a direction along the surface of the inner cover material 20 (piping 100). The tip of the sheath portion 50a comes into contact with the piping 100 to detect temperature. The tip of the sheath portion 50a may or may not be in close contact with the inner cover material 20. The distal end side may or may not be fixed to the inner skin material 20 with a thread similar to the suture thread 60a. A compensation lead wire can be used as the lead wire 50c.

[0036] The temperature detected by the thermocouple 50 is calculated in a measuring instrument (not shown) to which the conductive wire 50c is connected. The heater device 1 can maintain the temperature of the pipe 100 at a predetermined temperature by controlling the power supply to the heating element 40 in a control unit (not shown) that controls the power supply based on the temperature measured by the thermocouple 50 so that the detected temperature becomes a predetermined temperature.

[0037] As described above, in the thermocouple 50 of this embodiment, the portion of the sheath portion 50a that is pulled out from the pull-out portion P is fixed to the outer skin material 22 by the reinforcing sheet 60. The reinforcing sheet 60 may be any sheet that is large enough to cover at least the pull-out portion P. The reinforcing sheet 60 of this embodiment is a rectangular sheet, but the shape is not limited as long as it can cover the periphery of the pull-out portion P.

[0038] The structure for fixing the thermocouple 50 using the reinforcing sheet 60 will be described with reference to FIGS. 1 to 4. FIG. 4 is a diagram showing the cross-sectional structure of the portion where the reinforcing sheet 60 is fixed with the sewing thread 60a, as viewed from the sleeve 50b side. As shown in FIGS. 1 to 4, the reinforcing sheet 60 is fixed to the outer cover 22 by sewing its periphery with the sewing thread 60a. A portion of the thermocouple 50, which extends from the position of the lead-out portion P of the sheath portion 50a to the position where it is connected to the sleeve 50b, is sandwiched between the sewn reinforcing sheet 60 and the outer cover 22, thereby fixing the thermocouple 50 to the outer cover 22. Because the reinforcing sheet 60 is flexible, the sewing force (tension) of the sewing thread 60a causes the reinforcing sheet 60 to adhere closely to the sheath portion 50a, thereby firmly fixing the thermocouple 50 to the outer cover 22. Furthermore, since the reinforcing sheet 60 is sewn to the area that covers the drawer portion P of the outer cover material 22, the drawer portion P of the outer cover material 22 and the surrounding area thereof can be reinforced.

[0039] 4, the sheath portion 50a of the thermocouple 50 may be disposed on the inside of a seam where the sewing thread 60a passes through the outside of the reinforcing sheet 60 at the sewing position of the reinforcing sheet 60. By sewing in this manner, the tension of the sewing thread 60a is reliably applied to the sheath portion 50a, thereby firmly fixing the thermocouple 50. Furthermore, both sides of the sheath portion 50a in the left-right direction in FIG. 4 are sandwiched by the sewing thread 60a. Therefore, the sheath portion 50a can be fixed on the surface of the outer cover material 22 so as not to move in the directions of the sewing threads 60a on both sides (directions perpendicular to the axial direction of the sheath portion 50a).

[0040] The sewing method of the sewing thread 60a that secures the reinforcing sheet 60 is not limited to the straight stitch shown in Figure 4 and may be, for example, a backstitch. However, a preferred sewing method is one in which the sheath portion 50a is passed inside a stitch that passes through the outside of the reinforcing sheet 60 and the sewing thread 60a passes on both sides of the sheath portion 50a. Only the portion where the sheath portion 50a is secured may be sewn with overlapping threads using a backstitch or the like. Furthermore, the sheath portion 50a may be secured by a sewing thread sewn to the reinforcing sheet 60, separate from the entire reinforcing sheet 60 being sewn. The material of the sewing thread 60a is not particularly limited, but examples include fluororesin-coated glass fiber thread, PTFE thread, meta-aramid thread, polyester thread, and nylon thread.

[0041] The material of the reinforcing sheet 60 is not particularly limited as long as it can be sewn, but a low-friction sheet is preferable, specifically a fluororesin sheet or a fluororesin-coated sheet, because a low-friction sheet can fix the thermocouple 50 while preventing wear due to friction with the thermocouple 50.

[0042] Examples of fluororesin sheets include fluororesin sheets made of fluororesins such as polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-ethylene copolymer (ETFE), chlorotrifluoroethylene-ethylene copolymer (ECTFE), and polyvinylidene fluoride (PVDF). Also, fluororesin fiber cloth (woven fabric) made by weaving the above-mentioned fluororesin fibers may be used. Examples of fluororesin-treated sheets include fluororesin-coated inorganic fiber cloth obtained by coating inorganic fiber cloth (woven fabric) made of inorganic fibers such as glass fiber and alumina fiber with the above-mentioned fluororesin, and sheets made by coating resin sheets or the like with the above-mentioned fluororesin.

[0043] Furthermore, in addition to the above-mentioned fluororesin-based materials, the material for the reinforcing sheet 60 can also be a silicone resin-coated inorganic fiber cloth (e.g., a silicone resin-coated glass fiber cloth) obtained by coating the above-mentioned inorganic fiber cloth with silicone resin.

[0044] The sleeve 50b may be fixed to the outer cover 22 with a sewing thread 70. For example, the periphery (outer periphery) of the sleeve 50b may be sewn and fixed to the outer cover 22 by sewing with a sewing thread 70a. The periphery of the sleeve 50b may be sewn in one place, or in multiple places as shown in FIG. 2. Since the sleeve 50b, which is heavier than the sheath portion 50a and the conductor 50c, is fixed to the outer cover, the conductor 50c can be easily handled and breakage can be prevented.

[0045] Furthermore, for example, the connection portion of the sleeve 50b with the conductor 50c may be sewn and fixed with a sewing thread 70b. In this case, even if a force is applied to the thermocouple 50 in a direction that causes it to come out of the heater body 10, such as when the conductor 50c is pulled, the sewing thread 70b restricts movement of the sleeve 50b in the pulling direction. This prevents the thermocouple 50 from coming out of the heater device 1. The above-described fixing of the sleeve 50b by sewing may be performed by at least one of the sewing threads 70a and 70b.

[0046] The sutures 70 (70a, 70b) may be made of the same material as the suture 60a. The sutures 70a, 70b may be made of the same material as the suture 60a, or may be made of a different material.

[0047] The sleeve 50b is preferably positioned near the reinforcing sheet 60. More specifically, the sleeve 50b is preferably positioned adjacent to the outside of the reinforcing sheet 60. If the sleeve 50b is positioned away from the reinforcing sheet 60, the sheath portion 50a exposed therebetween may get caught on something and break. Furthermore, the sleeve 50b is preferably positioned outside the reinforcing sheet 60. If the sleeve 50b is positioned inside the reinforcing sheet 60 and covered therewith, the sleeve 50b will be kept warm, and the resin filled inside the sleeve 50b may be deteriorated by the heat. As shown in FIG. 2, the connection portion 50d of the sleeve 50b with the sheath portion 50a may be covered by the reinforcing sheet 60.

[0048] The manufacturing method of the heater device 1 of this embodiment is as follows: The manufacturing method of the heater device 1 is characterized by comprising a heater main body 10 that covers and heats the object to be heated, the heater main body 10 having at least an inner cover material 20 that contacts the object to be heated, an outer cover material 22, and a heating element 40 that is surrounded by the inner cover material 20 and the outer cover material 22, and a temperature sensor that detects the temperature of the object to be heated and has a thermocouple 50 (or a resistance temperature sensor) that passes through the heater main body 10 from its tip end located on the side of the object to be heated and is drawn out from an extension portion P of the outer cover material 22, and the manufacturing method includes a step of arranging a reinforcing sheet 60 in the area of ​​the outer cover material 22 that covers the extension portion P.

[0049] According to the present embodiment described above, the periphery of the lead-out portion P of the outer skin material 22 is reinforced by the sewn reinforcing sheet 60. This improves the strength of the lead-out portion P of the outer skin material 22. Improved strength of the lead-out portion P makes the lead-out portion P less likely to break even when a force is applied to the lead-out portion P in a tensile direction, for example, when the conducting wire 50c of the thermocouple 50 is pulled. The reduced resistance to breakage of the lead-out portion P prevents the thermocouple 50 from coming loose. Furthermore, since the thermocouple 50 is firmly fixed to the outer skin material 22, friction between the thermocouple 50 and the outer skin material 22 or the reinforcing sheet 60 is prevented, preventing wear of the outer skin material 22 and other components and failure of the thermocouple 50.

[0050] Furthermore, the thermocouple 50 can be firmly fixed to the outer cover material 22 by fixing the sheath portion 50a to the outer cover material 22 with the reinforcing sheet 60 or the like, and by fixing the sleeve 50b to the outer cover material 22 with the sewing thread 70. Therefore, even if the conducting wire 50c or the like is pulled or bent and a force is applied in a direction that would cause the thermocouple 50 to come out of the heater device 1, the thermocouple 50 can be prevented from coming out.

[0051] In this embodiment, the reinforcing sheet 60 fixes the sheath portion 50a, but it may be arranged to cover a part of the sheath portion 50a side of the sleeve 50b or the entire sleeve 50b, and the sleeve 50b may also be fixed to the outer cover material 22 by the reinforcing sheet 60. In this case, for example, the sleeve 50b may be filled with a resin having a higher heat resistance temperature.

[0052] Furthermore, although the heater device 1 includes the heat insulating material 30 in this embodiment, the heat insulating material 30 may be omitted by providing another layer with heat insulating properties. The heater device 1 may also include other layers or sheets as needed. For example, an inorganic fiber sheet may be disposed between the heat insulating material 30 and the outer cover material 22. This inorganic fiber sheet may be formed using the same material as the inorganic fiber sheet 40b described above, and may be configured as one layer or multiple layers.

[0053] Furthermore, although the reinforcing sheet 60 is fixed by sewing with the sewing thread 60a, it may be fixed to the outer cover material by other fixing means such as adhesive.

[0054] In addition, although a thermocouple is used as a temperature sensor for detecting the temperature of the pipe 100 in this embodiment, this is not limiting. A resistance temperature detector having a structure similar to that of the thermocouple 50 of this embodiment may also be used as the temperature sensor. In the case of a resistance temperature detector, the resistance element is disposed within the sheath portion 50a, and the structures of the sleeve 50b, the conductor 50c, etc. are similar to those of the thermocouple.

[0055] In addition, in this embodiment, an example has been shown in which the tip side of the thermocouple 50 is arranged on the piping (heating) side surface of the inner cover material 20 (outside the heater main body 10), but as mentioned above, this is not limited to this. The tip side of the thermocouple 50 or the resistance temperature detector may also be arranged on the heating element 40 side of the inner cover material 20 (between the inner cover material 20 and the heating element 40). Even in this case, the thermocouple 50 (or the resistance temperature detector) can measure the temperature of the piping 100.

[0056] In the present embodiment, the object to be heated by the heater device 1 has been described as the pipe 100, but this is not limiting. By forming the heater device 1 to fit the shape of the object to be heated, it is possible to heat various objects other than the pipe 100, such as flanges, joints, valves, clamps, tanks, pumps, etc., as long as the object can be covered and heated by the heater main body 10.

[0057] Furthermore, in this embodiment, the object fixed by the reinforcing sheet 60 has been described as the thermocouple 50, but the cord 40c connected to the heater wire 40a of the heating element 40 may also be used as a fixing means in the draw-out portion where the cord 40c is drawn out from the outer cover 22. By fixing the cord 40c with the reinforcing sheet 60 in the draw-out portion where the cord 40c is drawn out in the outer cover 22, it is possible to similarly prevent the heater wire 40a from coming loose. In addition, it is possible to reinforce the strength of the draw-out portion of the outer cover 22 where the cord 40c is drawn out.

[0058] In this embodiment, the heater device 1 has been described, but the present invention is not limited to this, and may be a heating unit that covers and heats a pipe or the like and has a configuration similar to that of the heater device 1. The heating unit may be disposed as a part of an apparatus that includes a pipe or the like, for example. [Explanation of symbols]

[0059] 1. Heater device 10 Heater body 20 Endothelial material 22 Outer skin material 30 Insulation 40 Heating element 50 thermocouples 50a sheath part 50b sleeve 50c conductor 60 Reinforcement sheet 70 Suture 100 Piping

Claims

1. a heater body that includes at least an inner skin material that contacts an object to be heated, an outer skin material, and a heating element that is surrounded by the inner skin material and the outer skin material, and that covers and heats the object to be heated; a temperature sensor for detecting the temperature of the object to be heated, the temperature sensor having a thermocouple or a resistance thermometer sensor that is disposed on the side of the object to be heated, passes through the heater body from a tip end side thereof, and is drawn out from a lead-out portion of the outer cover material; a reinforcing sheet fixed to the outer skin material in an area covering the drawer portion; A heater device comprising:

2. 2. The heater device according to claim 1, wherein a portion of the thermocouple or the resistance temperature detector drawn out from the drawing portion is sandwiched and fixed between the reinforcing sheet and the outer cover material.

3. 2. The heater device according to claim 1, wherein the reinforcing sheet is fixed to the outer cover by sewing.

4. 2. The heater device according to claim 1, wherein the reinforcing sheet is a fluororesin sheet or a fluororesin-coated sheet.

5. 2. The heater device according to claim 1, wherein the reinforcing sheet is a silicone resin-coated glass fiber cloth.

6. 2. The heater device according to claim 1, wherein a sleeve, which is a connection portion of the thermocouple or the resistance temperature detector with a conductor, is disposed adjacent to the outer side of the reinforcing sheet.

7. 7. The heater device according to claim 1, wherein a sleeve, which is a connection portion of the thermocouple or the resistance temperature detector with a conductor, is sewn and fixed to the outer cover material.

8. 8. The heater device according to claim 7, wherein the sleeve is fixed by sewing at least one of a connection portion between the sleeve and the conductor and a periphery of the sleeve.

9. a heater body that includes at least an inner skin material that contacts an object to be heated, an outer skin material, and a heating element that is surrounded by the inner skin material and the outer skin material, and that covers and heats the object to be heated; a temperature sensor that detects the temperature of the object to be heated, the temperature sensor having a thermocouple or a resistance temperature detector that is drawn out from a leading end side that is disposed on the side of the object to be heated, through the heater body, and out from a lead-out portion of the outer cover material; A method for manufacturing a heater device, comprising: A method for manufacturing a heater device, comprising the step of arranging a reinforcing sheet in an area of ​​the outer cover material that covers the drawer portion.

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