JP3065985U - Multiple seed heater - Google Patents

Abstract

(57) [Summary] [Purpose] A heating wire is disposed inside a metal hollow pipe, and the heating wire is surrounded by a sheathed heater filled with an electric insulating material. An object of the present invention is to provide a multiple sheathed heater that can heat a desired area by connecting only types of heater units, can be easily attached and detached, and can be rearranged by adding, reducing, or replacing heaters. A frame material is attached to a sheathed heater, a connecting means in a width direction of the sheathed heater is provided on the frame material, and a connecting means in a longitudinal direction of the sheathed heater is provided on the frame material. The units can be freely connected, and the connected sheathed heater is fixed to the reflector by fixing means provided on the frame member.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an electric heating device, and more particularly, to a multi-sheath heater in which a heating wire is arranged inside a hollow metal pipe and the periphery of the heating wire is filled with an electrical insulating agent. Stake.

[0002]

2. Description of the Related Art Generally, when electrically heating a certain area, it is necessary to design and manufacture a heating device by selecting various heaters having an appropriate size and capacity according to the purpose. It is necessary to set one with different specifications.

However, it is inefficient and costly to design and manufacture a heater for each product depending on the size of the surface to be heated. Therefore, it is necessary to use a required number of types of heater units in combination, and For example, a method of heating the area of the surface is often used. Among them, a heating wire is provided inside a sheath made of a hollow metal pipe called a sheathed heater, and the inside of the sheath is filled with an insulating material so that the heating wire does not contact the metal sheath. Looking at heaters with a closed structure, usually the required number of heaters are arranged and used independently in the apparatus according to the heating area.

[0004]

[Problems to be solved by the invention]

 With the above-mentioned means, it is possible to cope with heating of a desired area by using one type of heater unit, but when assembling to the device, it is troublesome since work for each unit is required, and separate to the device side or heater It is necessary to provide assembling means. Furthermore, depending on the device, it may be troublesome to respond to a change in the area to be heated due to a change in specifications or to replace a part of the heater due to failure or aging.

In view of the above, according to the present invention, a desired area can be heated by combining (connecting) only one type of heater unit in accordance with a heating area. It is an object of the present invention to provide a multiple sheath heater that can be freely replaced and replaced.

[0006]

Means for Solving the Problems The multiple sheathed heater of the present invention has a frame member fixedly attached to the heater having the above-mentioned structure called a sheathed heater, and the frame member is attached to the heater in the width direction of the heater. A connecting unit is provided to form one unit, and the units are connected by a plurality of units by the connecting means of the frame material. As connecting means provided on the frame material, the heater units are arranged in parallel in the width direction at a certain interval, holes are provided at respective corresponding positions where the frame materials are joined, and the holes are connected by screws or the like. It shall be constructed by means such as easy assembling.

[0007] Further, the frame member is provided with a connecting means in the width direction and a connecting means in the longitudinal direction (length direction) of the sheathed heater to form one unit, and the connecting means makes two units in the longitudinal direction. It is configured by connecting to. As connecting means provided on the frame material, two heater units are arranged in series with the sheath distal end facing each other, holes are provided at corresponding positions of the frame material, and studs for connecting the frame materials to the holes are provided. It is configured by means that is easy to assemble, such as engaging the parts and connecting and connecting with screws or the like.

[0008] In addition, the multiple sheath heater of the present invention is configured such that the connected heaters are integrally attached to the reflector by means for fixing to the reflector provided on the frame member. When the heater unit is mounted on the reflector plate, holes are provided at positions corresponding to the joints, and the holes are connected by screws or the like and fixed by means of easy assembly. I do.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings.

1 to 3 are three views of a sheathed heater unit showing an embodiment of the present invention. FIG. 1 is a top view, FIG. 2 is a front view, and FIG. 3 is a right side view. Briefly describing the sheathed heater prior to the description of the sheathed heater unit of this example, as described briefly above, a heating wire such as a nichrome wire is disposed inside a hollow metal sheath made of stainless steel or copper. The inside of the sheath is filled with an electrical insulating agent such as magnesium oxide so that the heating wire does not come into contact with the sheath, and the end is sealed. Incidentally, the end of the heating wire is connected to the lead wire in the terminal box provided at the end of the sheath. The sheathed heater 1 of the present embodiment has the above structure, the stainless steel sheath 11 is U-shaped, and both ends are fixed to the terminal box 12, and a lead wire (not shown) is provided inside the terminal box 12. ) To take out a lead wire from the rubber bush 13.

[0011] A stainless steel rectangle is provided in two places near the joint of the sheath 11 with the terminal box 12 and near the U-shaped bent portion of the sheath 11 (hereinafter referred to as a sheath distal end portion 14). The frame members 2 each having a shape are inserted into the sheath 11 so as to face each other, and are installed and welded by silver brazing. The frame member 2 is provided with two thin plate-shaped protrusions 21 on one side surface in the width direction of the sheathed heater 1, and the protrusions 21 have connection screw holes serving as connection means on one side for connection. A connecting hole 23 serving as connecting means on the other side is provided at a position corresponding to the connecting screw hole 22 at the other end in the width direction of the sheath heater 1 at the time of connection. It is provided at two places corresponding to the holes 22. Further, a U-shaped bent surface of the frame member 2 is provided with a reflector mounting screw hole 24 serving as a fixing means for fixing the reflector to the reflector 5 at a total of four locations, two locations on one surface.

FIG. 4 shows a front view and a right side view of the stud 3 of the present embodiment. The stud 3 has a stainless steel hexagonal column shape, one end of which is formed with a male screw 31, and the other end of which is formed with a female screw 32. Used to link to

FIG. 5 shows a top view and a right side view of an example of the multiple sheathed heater of the present embodiment. In this example, five heater units are connected in the width direction and two heater units are connected in the longitudinal direction, and the heater unit is fixed to the reflection plate 5. A temperature sensor 4 is fixed to one of the heater units by a sensor. It is fixed and attached by a band 41. A lead wire (not shown) from the heater and the temperature sensor 4 are connected to a temperature controller (not shown) to control the temperature.

Next, each connecting means of the present embodiment will be described in detail. To connect the heater units in the width direction, the two heater units to be connected are overlapped with the connection screw holes 22 of the other unit under the connection holes 23 of one unit so that the positions of the connection screw holes 22 of the other unit are aligned, and arranged in parallel. Then, the connection hole 23 and the connection screw hole 22 are screwed and fixed with screws separately provided from the connection hole 23 side and connected. On the other hand, in the longitudinal connection, the two heater units to be connected are arranged in series with the sheath distal end 14 facing each other, and the stud 3 is inserted into the connection screw hole 22 of the sheath distal end 14 frame member 2 of the one unit. The male screw 31 is screwed, and the connecting hole 23 of the frame member 2 of the sheath 14 of the other unit and the hole position of the female screw 32 of the stud 3 are made to coincide with each other, so that the connecting hole 23 and the female screw 32 are additionally provided. Fix with screws and connect. To fix the connected sheath heater connected to the reflector 5 by the above-described means, the reflector mounting screw hole 24 provided in the frame member 2 is set to the heater mounting hole (not shown) provided in the reflector 5 in advance. The heater mounting hole and the reflector mounting screw hole 24 are screwed and fixed with screws separately provided from the heater mounting hole side of the reflector 5 so as to match.

The connection means provided on the frame material described above is an example of the embodiment. For example, the connection portion may be formed into a concave and convex shape having a stopper function, and may be connected by inserting both of them. , Or another means.

Preferred examples of the use of the multiple sheathed heater of the present invention are a fan heater for heating and a drying device by installing a separate fan, and a grilling device using a reflector as a saucer. There are things.

[0017]

[Effects of the Invention] According to the present invention, one type of sheathed heater can be freely combined for a required unit, and a heating device of a freely sized size corresponding to a desired heating area can be realized. It is not necessary to separately design and manufacture a heater device corresponding to the size of the device, thereby improving the design / manufacturing efficiency and reducing the cost.

In addition, a means for connecting the heaters is provided in the heater unit itself, and the operation of connecting the heaters in advance and integrating them in a multiple unit makes it possible to perform a troublesome work such as mounting each of the sheathed heaters to the heating device. Since it is unnecessary and the number of attachment means for providing the apparatus can be minimized, the production can be further facilitated. In addition, the heater can be easily added or reduced, making it possible to easily respond to changes in the size of the heater device due to a change in application, or repair or replacement in the event that a part of the heater becomes defective. This can also have an effect on efficiency in specification changes and maintenance.

[Brief description of the drawings]

FIG. 1 is a top view showing a sheathed heater unit according to an embodiment of the present invention.

FIG. 2 is a front view showing the sheathed heater unit according to the embodiment of the present invention;

FIG. 3 is a right side view showing the sheathed heater unit according to the embodiment of the present invention.

FIG. 4 is a top view and a right side view showing the stud according to the embodiment of the present invention.

FIG. 5 is a top view and a right side view showing the connected sheath heater according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheath heater 11 Sheath 12 Terminal box 13 Rubber bush 14 Sheath tip side 2 Frame material 21 Projection 22 Connecting screw hole 23 Connecting hole 24 Reflector mounting hole 3 Stud 31 Male screw 32 Female screw 4 Temperature sensor 41 Sensor fixing band 5 Reflection Board

Claims (3)

[Utility model registration claims] 1. A frame material is attached to a sheathed heater in which a heating element is disposed inside a metal hollow pipe, and means for connecting the sheathed material in the width direction of the sheathed heater is provided. A multiple sheathed heater characterized by being freely connectable. 2. A means for connecting the frame material in the longitudinal direction of the sheathed heater, and a stud connecting the two frame materials,
The multiple sheathed heater according to claim 1, wherein two units of the sheathed heater can be connected in a longitudinal direction. 3. The frame member is provided with a fixing means to a reflection plate,
3. The multiple sheathed heater according to claim 1, wherein the sheathed heater unit is attached to the reflector.