KR101654716B1 - Heating equipment using the sheath heater with packing - Google Patents

Heating equipment using the sheath heater with packing Download PDF

Info

Publication number
KR101654716B1
KR101654716B1 KR1020160030548A KR20160030548A KR101654716B1 KR 101654716 B1 KR101654716 B1 KR 101654716B1 KR 1020160030548 A KR1020160030548 A KR 1020160030548A KR 20160030548 A KR20160030548 A KR 20160030548A KR 101654716 B1 KR101654716 B1 KR 101654716B1
Authority
KR
South Korea
Prior art keywords
packing
tube
sheath heater
facility
axial tube
Prior art date
Application number
KR1020160030548A
Other languages
Korean (ko)
Inventor
세 종 이
Original Assignee
주식회사 지앤브이
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=56946270&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR101654716(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 주식회사 지앤브이 filed Critical 주식회사 지앤브이
Priority to KR1020160030548A priority Critical patent/KR101654716B1/en
Application granted granted Critical
Publication of KR101654716B1 publication Critical patent/KR101654716B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/18—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
    • H05B2214/02—Heaters specially designed for de-icing or protection against icing

Landscapes

  • Resistance Heating (AREA)

Abstract

The present invention relates to a sheath heater, which is a technique for lowering the defective rate of the sheath heater and securing economical efficiency in manufacturing. More specifically, the present invention relates to a sheath heater, a heat exchanger device using the same, and a sheath heater both-end packing necessary for manufacturing the sheath heater.
The present invention relates to a tubular body; A heating wire disposed inside the tube; A packing sealing the interior of the tube; And a heat transfer material filled in the internal space of the tube made up of the tube and the packing, wherein the tube has an inner diameter reduced by an axial tube process, and the packing is tightly fixed to the inner tube surface before the axial tube process, And the portion to be tightly fixed is increased after the axial tube process.
According to the constitution of the present invention, instead of forming the packing of the sheath heater in various steps as in the prior art, the air of the inner sealing portion is formed in the axial tube process even after the shaft pipe process is performed after the both ends of the sheath heater are packed "once" The present invention relates to a manufacturing method and a manufacturing method for reducing the defective product rate while greatly reducing the manufacturing process by blocking the inflow of outside air or moisture without a separate process after the shaft tube process, Thereby providing a sieve heater by the method.

Figure 112016024554359-pat00001

Description

HEATING EQUIPMENT USING THE SHEATH HEATER WITH PACKING WITH SEIZE HEATER INCLUDING PACKING

The present invention relates to a sheath heater. This is a technology for lowering the defective rate of the sheath heater and ensuring economical efficiency in manufacturing. Further, the present invention relates to a sheath heater, a heat exchanger device using the same, and a sheath heater both-end packing necessary for manufacturing the sheath heater.

A typical example of application of the heating apparatus facility body according to the present invention is a heating facility body. The facility body is buried to perform a heating function. However, the technical idea of the present invention is not limited to buried heat transfer devices. As will be described later, the present invention aims at lowering the defective rate of the sheath heater and securing the economical efficiency of the manufacturing process. All of the sheath heaters to which such a technical idea is applied belong to the technical category of the present invention. However, in order to simplify the invention, a buried heat transfer apparatus body to which the sheath heater of the present invention is applied will be described as an example.

As a related art, the inventor of the present invention has already proposed a method of manufacturing an electric heating apparatus body by assembling a square-shaped sealed housing in which an insulating protective space is formed, a buried-type electric heating apparatus using the sealed housing, and a multi- (Korean Patent No. 1582596, Korean Patent No. 1465790).

In addition to the prior patent invention, the present invention is characterized in that, in order to secure stability and economical efficiency in the manufacturing process of the sheath heater, the packing having the air outlet at both ends of the sheath heater is inserted, In order to reduce the cost.

A sheath heater is a typical electrothermal heater, which refers to a tubular heater in which a heating wire is embedded in a metal protective tube in the shape of a coil, and magnesium oxide, which is an insulating powder, is filled in the heating tube to insulate the heating wire and the protective tube. It is robust against external physical impact, and efficiency of electric thermal energy is increased, and it is advantageous that it can be processed in various shapes to suit the usage and form of the user.

The buried heaters generally used in this type of sheath heater are installed on schools, houses, factories, road surfaces or airport runway surfaces to warm the floor, and the buried heaters are installed on the road surface or airport runway This is to prevent accidents by preventing snow from being accumulated on the road when snow falls in the winter, and by preventing rainwater or snow from melting on the road to prevent ice from forming.

In general, the buried type electric heating apparatus can be classified into a heating system using a hot water pipe and a heating system using a heat pipe. In order to eliminate problems such as electric leakage, the buried type electrothermal apparatus using the heat transfer tube to which the sheath heater is applied according to the present invention among the above-mentioned heating methods has a very high sealing property between the sealing cap and the power supply line and between the sealing cap and the heat generating rod It is important. In order to solve such a problem, the inventor of the present invention has proposed the above-described patent technology.

According to a conventional method of manufacturing a sheath heater, a heating wire is disposed inside a tube having a predetermined length. At this time, a rod-shaped connecting terminal is connected to an end of the heating wire, and a part of the rod- The packing is sealed inside the tubular body while fixing the tubular connection terminal and the tubular body. The sheath heater includes the tubular body and the heat transfer material filled in the tubular inner space formed of the packing. As the heat transfer material, magnesium oxide (MgO) is typically used. The action of the packing is to prevent external air or moisture from flowing into the interior of the tube.

More specifically, the process of manufacturing the sheath heater will be described. The heating wire is wound in accordance with a desired electrical characteristic value and other specifications by using a mechanical means, the prepared heating wire is inserted into the metallic tube, Of magnesium oxide to fill the hollow layer in the tube. At this time, the packing is inserted into the tube to prevent the magnesium oxide to be leaked out and to fix the rod-shaped terminal connected to the heating wire to the fixed position at one end of the tube. The magnesium oxide is filled through one end of the tube where the packing is not inserted, and is sealed with packing. When the inside of the metallic tube is compacted, the thermal conductivity is improved and the efficiency is increased. When the filling of the magnesium oxide is completed, the metallic tube is passed through a condenser to compress the tube and finish.

On the other hand, air between the magnesium oxide particles of the composite mesh structure filling the inside of the tube during the axial tube process can not escape to the outside, and as the unit volume is narrowed, the pressure in the tube becomes high. In this state, A failure of the pipe body due to the increased pressure occurs.

Conventionally, in order to solve this problem, temporary packing has been used until the end of the shaft process, and after the end of the shaft pipe, the temporarily used packing is removed, and both end portions of the tube having the packing removed after the air trapped in the tube are removed, Respectively.

On the other hand, a sheath heater having a Teflon sealing part is disclosed in Korean Utility Model Publication No. 2010-0002236 (Mar. The present invention relates to a sipe heater having a heating element with a heating element, and a pipe type metal tube having the heating element inside the heating element. A filling material filled in the metal tube to surround the heating element and maintain an insulated state between the heating element and the metal tube; And one end of the lead pipe is exposed to the distal end of the metal pipe and the other end of the lead pipe is received in the metal pipe and electrically connected to the heating wire.

However, the prior art includes a Teflon sealing the distal end of the metal tube while exposing one end of the lead pin to the outside, and the distal end of the metal tube is bent inward to be in close contact with the Teflon, And a sealing part for preventing the air from flowing into the inside of the casing. However, this prior art does not disclose a configuration for discharging internal air at the time of an axial pipe to be proposed by the present invention, and completely sealing the end of the axial pipe to block external air or moisture from entering.

Korea Public Utility Model Publication No. 2010-0002236 (2010.03.04.)

In the present invention, instead of forming the packing of the sheath heater in various steps as in the prior art, when the end of the sheath heater is packed "once" by physical fitting and then subjected to the axial tube process, The present invention provides a manufacturing method for reducing the defective product rate while greatly reducing the manufacturing process by cutting off the inflow of outside air or moisture without a separate process after the tubular process and a sieve heater by the manufacturing method. In addition, it is difficult to adjust the distance between the heater units when inserting the power supply line into the side, by inserting the power supply line into the upper end of the sealed housing, To facilitate the adjustment of the spacing between the sheath heaters. It is also intended to provide an economical heat transfer facility body through this.

In order to solve the above-mentioned problems, A heating wire disposed inside the tube; A packing sealing the interior of the tube; And a heat transfer material filled in the internal space of the tube made up of the tube and the packing, wherein the tube has an inner diameter reduced by an axial tube process, and the packing is tightly fixed to the inner tube surface before the axial tube process, And the portion to be tightly fixed is increased after the axial tube process.

The packing may be fixed to the inner surface of the tube while fixing the rod-shaped connection terminal so that a part of the rod-shaped connection terminal is exposed to the outside, The packing may have a rod-shaped connection terminal insertion hole through which the rod-shaped connection terminal passes.

The packing may be provided with an air discharge hole for discharging the inner air to the outside in order to exclude the excessive pressure inside the shaft tube and for preventing the outside air from flowing after the end of the axial tube process .

In the present invention, the air is discharged through the air discharge hole at the time of the axial tube, and the packing is deformed at the axial tube, so that the packing is compressed in the axial tube process to seal the air discharge hole, The inner and outer portions of the sheath heater are disconnected.

And a back surface portion of the packing is formed with a fixing portion for forcing the packing into the tube body before the axial tube to fix the packing inside the tube body.

The present invention may be characterized in that the air outlet hole is formed in the fixing portion.

Wherein the outer diameter of the protrusion ring is larger than the diameter of the body and is smaller than the inner side diameter of the tube before the axial tube process, The protrusion ring discharges the air inside the tubular body to the outside during the axial tube process after the packing is inserted into the tubular body but after the tubular process is completed, So that the tubular body is sealed by being pressed tightly.

According to another aspect of the present invention, there is provided a sieve heater comprising: a sieve heater having at least two spaced apart power source supply lines connected to the sieve heater, The power supply line is drawn into the upper portion of the sealed housing and the sheath heater is drawn into the lower portion of the sealed housing so that the sealed housing can be brought into close contact with each other in four directions without interference of the power supply lines, Wherein a groove for a fixing pin is formed on a side surface of the sealing housing and the groove for the fixing pin is inserted and the fixing pin is fixed to the bottom, thereby fixing the sealing housing.

Also, a tubular body; A heating wire disposed inside the tube; A packing for sealing the inside of the tube used in a sheath heater including a heat transfer material filled in the tube internal space, the internal air being discharged to the outside in order to exclude the pressure inside the tube, An air vent hole is formed to prevent external air and moisture from flowing into the tubular body, and a back surface portion is formed with a fixing portion for forcing the packing into the tubular body to fix the packing in the tubular body, Wherein a diameter of the outer circumference of the protrusion ring is larger than a diameter of the body and smaller than an inner side diameter of the tube before the axial tube process, The packing being larger than the inner diameter of the packing.

The present invention provides a method of manufacturing a sheath heater using the packing, comprising the steps of: inserting a heating wire into a metallic tube and filling a heating material to fill a hollow layer in the tube; Fixing the packing at both ends of the tubular body by forcibly fitting; Discharging air inside the tubular body while shunting the tubular body; The diameter of the tubular body is reduced in the course of the axial tube, and when the tubular body is reduced to the diameter of the protruding ring having a diameter smaller than the inner diameter of the tubular body before the axial tube, only the fixing portion is tightly fixed to the inner side of the tube Wherein the tubular body is tightly fixed to the protruding ring portion after the tubular shank so that the tubular inner and outer tubular portions are separated from each other.

According to the structure of the present invention described above, instead of forming the packing of the sheath heater in various steps as in the prior art, the packing of the sheath heater both ends is "once" It is possible to prevent excessive pressure from being formed in the inside by discharging the air to the outside and to prevent the inflow of outside air or moisture without a separate process after the end of the pipe manufacturing process, thereby remarkably shortening the manufacturing process, And a sheath heater according to the manufacturing method is provided. In addition, it is difficult to adjust the distance between the heater units when inserting the power supply line into the side, by inserting the power supply line into the upper end of the sealed housing, Thereby providing a sieve heater which can easily adjust the spacing between the sieve heaters. This makes it possible to provide an economical heat transfer device body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating an installation example of a heat transfer apparatus body according to an embodiment of the present invention; FIG.
FIG. 2A is a three-dimensional view of a heat-generating device and a sealed housing according to an embodiment of the present invention. FIG.
FIG. 2B is a conceptual view showing that the sealed housing, which is one embodiment of the present invention, is fixed.
3 is an exploded perspective view of the sealed housing according to an embodiment of the present invention. 4 is a view of the end of a sieve heater in a sealed housing according to an embodiment of the present invention.
5 is a cross-sectional view of a sieve heater according to an embodiment of the present invention.
FIG. 6 is a perspective view of a packing according to an embodiment of the present invention, FIG. 7 is a front view, FIG. 8 is a rear view, and FIG.
10 is a conceptual diagram showing the packing standard of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. will be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating an installation example of a heat transfer apparatus body according to an embodiment of the present invention; FIG. Each sheathed heater 100 disposed at a predetermined interval of the heat transfer apparatus body 400 of FIG. 1 is coupled to a rectangular columnar sealed housing 200. As shown in the figure, a power supply line 110 for receiving power is connected to the upper end of the sealed housing 200. Although the present embodiment has exemplified a rectangular sealing housing, the present invention is not limited thereto. In the following terms, the term "heat transfer device" means the "sheath heater" or the "sheath heaters".

FIG. 2A is a three-dimensional view of a heat-generating device and a sealed housing according to an embodiment of the present invention. FIG. Referring to FIG. 2, a power supply line 110 for supplying power is vertically inserted into the upper end of the sealing housing 200 and is coupled through a sealing housing 200 into which the sheathed heater 100 is inserted in the same direction. The sealing housing 200 is filled with an insulating material. In this embodiment, the sealing housing 200 is injected through the insulating material inlet 210.

The sealing housing 200 is a rectangular parallelepiped whose edges are curved. In the case of a cross section, it has a rectangular rectangular shape. This is to ensure that the sealing housings are in close contact with each other in four directions without interfering with the power supply lines, so that the mounting is stable, easy to carry and stack, and is not susceptible to damage due to external impact or the like. By connecting the power supply line 110 to the upper end of the sealed housing 200, the space between the sealed housings can be minimized during storage, thereby reducing the volume and facilitating transportation during storage. In the case of the sealed housing of the prior patented invention, the distance between the sheath heaters is interrupted by the power supply line when the power supply lines are connected on both sides of the sheath heater, but the power supply line is connected to the upper end of the sealed housing, It is also easy.

2B is a conceptual view showing that the sealing housing is fixed in one embodiment of the present invention. As shown in FIG. 2B, the fixing pin 202 is inserted into the groove 201 for the fixing pin located on the side of the sealing housing, And the fixing pin 202 can be firmly fixed without slipping due to the groove 201 for the fixing pin. The fixing pin groove 201 is formed on the side surface of the sealing housing 200 in the form of a wave and the fixing pin 202 surrounds the sealing housing 200 with a U- And is fixed to the foamed concrete layer installed for insulation at the lower part of the housing 200.

3 is an exploded perspective view of the sealed housing according to an embodiment of the present invention. 4 is a view of the end of a sieve heater in a sealed housing according to an embodiment of the present invention.

3, the sheath heater 100 and the coupling portion C of the power supply line 110 are positioned in a rectangular column-shaped sealed housing 200 having a predetermined thickness, And an internal insulating protective space 300 for filling the material.

A sealing housing 200 for sealing a power supply line 110 for supplying power and a coupling portion C of a sheath heater 100 connected to the power supply line includes an electric heater insertion port into which the sheath heater 100 is inserted, A power supply line inserting hole into which a pair of the power supply lines 110 are inserted is formed.

4, the buried sheath heater 100 of the present invention includes a rod-shaped connection terminal 120, a packing 160, a heating member 180, a heating wire 170, and a tube 150 . More specifically, the sheath heater 100 includes: a tube 150 having a predetermined length; A heating line 170 disposed inside the tube 150; A rod connection terminal 120 connected to an end of the heating wire 170; A packing 160 sealing the inside of the tube 150 while fixing the rod connection terminal 120 to the tube 150 so that a part of the rod connection terminal 120 is exposed to the outside; And a heat transfer material (180) filled in the inner space of the tube (150) comprising the tube (150) and the packing (160). The connection of the power supply line 110 and the sheath heater 100 may be realized by connecting the power supply line 110 to the rod connection terminal 120 which is a medium for connecting the power supply line 110 and the heating line 170 .

The power supply line 110 in the sealed housing 200 is a power supply line extending from the power supply line inserting port of the encapsulation housing 200. The unidirectional sleeve terminal 130 is connected to the power supply line 110 and the bar And is an electrical conductor for efficiently connecting the connection terminal 120. The rod connection terminal 120 is crimped and connected through the two-step sleeve terminal 130. The pair of strands of the power supply line 110 may be formed by directly inserting a copper core wire 111, which has peeled off the cover of the power supply line 110, into one end of the two-end sleeve terminal 130, And is connected to the connection terminal 120.

The rod connection terminal 120 is an electric conductor and one end of the electric connection is press-coupled with the one end of the sleeve terminal 130 and the other end thereof is inserted into the center of the tube 150 and connected to the heating wire 170 to supply power. The packing 160 is formed with a through-hole through which the rod-shaped connecting terminal 120 passes, and functions as a cap for sealing the tube 150. The heat transfer material 180 may be magnesium oxide (MgO), which is a compound of magnesium and oxygen, as a heat transfer material filled in the tube 150. The heating line 170 is a coil-shaped electric heating line 170 passing transversely through the center of the tube 150 at the end of the rod connection terminal 120 connected to the power supply line 110. In general, a coil-shaped nichrome wire can be used. The tubular body 150 is a constituent material that can use the heat generated from the heating line 170 in accordance with the purpose of use. The tubular body 150 is a thermally conductive material for protecting the heating line 170 and the heating member 180, It is a metal protection material with good corrosion resistance and corrosion resistance.

The configuration of the above-described embodiment does not limit the technical idea of the present invention. The configuration of the sheath heater 100 described below corresponds to the technical feature of the present invention.

5 is a cross-sectional view of a sieve heater according to an embodiment of the present invention. 5, the end of the sheath heater 100 is enlarged and shown. As described above, a portion of the heating wire 170 and the rod-shaped connection terminal 120 is located inside the sheath heater 100, and the inside thereof is filled with a heat conductive material 180 such as magnesium oxide. The packing 160 sealing the both ends of the tube 150 is tightly fitted to the inner circumferential surface of the tube 150. The power supply line and the heating line 170 are connected by the rod connection terminal 120 and the rod connection terminal 120 passes through the packing 160.

The packing 160 preferably has an elastic material. The packing 160 may be formed of a silicon material. In the present invention, in order to eliminate excessive pressure inside the pipe during the purpose of the present invention, the inner air is discharged outside, and after the end-of-pipe process is completed, the packing 160 Is preferably formed with an air vent hole. The inner air is discharged through the air discharge hole and the packing 160 is compressed in the axial tube process so that the air discharge hole is sealed, so that the inner and outer portions of the sieve heater 100 can be disconnected . The silicone material of the packing 160 preferably has ductility (or hardness) to such an extent that the air discharge hole can be appropriately clogged according to the above-mentioned axial tube process.

The air in the sheath heater 100 is discharged by the air discharge hole formed in the packing 160 and the inner and outer portions of the sheath heater 100 are deformed by the deformation of the packing 160 during the axial tube process, Will be described with reference to Figs. 6 to 10. Fig. FIG. 6 is a perspective view of a packing according to an embodiment of the present invention, FIG. 7 is a front view, FIG. 8 is a rear view, and FIG. The portion to be first inserted into the tube 150 is described as the front surface of the packing in order to facilitate the explanation. The packing 160 is inserted into the tubular body 150 from the front portion, and the rear surface is seen from the inlet of the tubular body after the insertion.

As shown, the packing 160 basically has a body 160a having a constant volume. A protruding ring 161 is formed on the outer periphery of the body 160a. In this embodiment, two protruding rings 161 are formed at regular intervals, which may be designed to have appropriate functions.

The outer diameter of the projection ring 161 is larger than the diameter of the body 160a and is smaller than the inner diameter of the tube before the tubular processing. Further, the diameter of the projection ring 161 is larger than the inner diameter of the tubular body after the tubing process. As a result, the protrusion ring 161 allows the air inside the tubular body to be discharged to the outside at the start of the tubular process after the packing 160 is inserted into the tubular body. However, after the tubular process is completed, Thereby tightly sealing the tubular body.

The front portion of the packing 160 is inclined to the front so as to be easily inserted into the tube body and the back portion of the packing 160 is formed by forcing the packing 160 into the tube body before the axial tube, The fixing portion 163 is formed to be able to be fixed to the fixing portion 163.

The fixing portion 163 has a larger diameter than the body 160a of the packing 160 and the projection ring 161 and is slightly larger than the inner diameter of the tube-like integral tube body. So that elastic force acts on the tubular body and is tightly fixed to the inside of the tubular body. The fixing portion 163 located on the rear surface of the packing 160 has the widest diameter and the fixing portion 163 has the air vent hole 162 formed therein. In the present embodiment, the air vent holes 162 are radially formed on the outer periphery of the fixing portion 163.

The air discharge hole 162 is located on the rear surface of the packing 160 to remove the air inside the tube generated during the axial tube process and the air discharge hole 162 is located on the rear side of the packing 160 And is located at the fixing portion 163.

The packing 160 is formed with a rod-shaped connection terminal insertion hole 164 extending from the front portion of the packing 160 to the backside thereof. The rod-shaped connection terminal insertion hole 164 is provided with a rod- And it also serves to position the rod-shaped terminals and hot wires in the center of the tube.

As described above, the packing 160 is inserted into one side and the other side of the tube at the time of manufacturing the heat transfer device to prevent the heat transfer material from coming off. The packing 160 protects both ends of the heat tube from moisture, The heat ray is positioned in the center of the tube in the longitudinal direction of the tube to lower the defect rate in the manufacturing process and improve the quality and durability by increasing the withstand voltage limit.

In the process of manufacturing the sheath heater, the heating wire is wound in accordance with the desired electrical characteristic value and other specifications by using a mechanical means, the prepared heating wire is inserted into the metallic tube, and the heating material is filled for heat- . At this time, the hollow layer must be filled with the heat transfer material, and when there is air in the hollow layer, the inner pressure is increased when the tube is compressed and the tube is shrunk. When the electric power is increased at the high pressure, There is a problem that the tube pops up. Therefore, it is very important to completely remove the air in the hollow layer. In order to completely remove the air of the hollow layer, a function structure for discharging air to the packing 160 as described above can be used to discharge the air in the hollow layer inside the tubular body to the outside during the process of shanking the tubular body, The diameter of the tubular body is reduced, and when the tubular body is reduced to the diameter of the projection ring 161 having a diameter smaller than the inner diameter of the tubular body before the tubular trunking, only the fixing portion 163 Tightly fitted and fixed to the protruding ring 161 until the portion of the protruding ring 161 is tightened after the axial tube is tightened. 10 is a conceptual diagram showing the packing standard of the present invention. As can be seen from the hypothetical broken line shown in FIG. 10, the inner surface of the tube-like body is located between the fixing portion 163 of the packing 160 and the projection ring 161.

Air can flow through the inside and outside of the tubular body through the air discharge hole 162 located in the fixing portion 163, but the tubular body can be prevented from passing through the projection ring 161 of the packing 160 due to the reduction of the tubular post- It is possible to completely block the penetration of moisture or air from the outside when using the electric heater because the inside of the tube is in close contact with the inside of the tube and the inside of the tube is sealed so as to seal out the remaining air in the tube, Can be prevented.

Although specific reference may be made in detail to the embodiments of the invention, it is to be understood that the invention is not limited to the specific embodiments thereof, and that various changes and modifications may be made by those skilled in the art.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

Also, connecting lines or connecting members between the components shown in the figures illustrate functional connections, physical connections, or circuit connections, which may be represented in the actual device as replaceable or additional various connections. Further, unless it is specifically stated that the description of the component is particularly essential, it may not necessarily be a necessary component for application of the present invention.

100: Sheath heater
110: Power supply line
111: Copper core wire
C:
120: rod connection terminal
130: Two-end sleeve terminal
150: tubular body
160: Packing
160a: Body
161:
162: air vent hole
163:
164: Rod connection terminal insertion hole
170: Heating line
180: Heat transfer material
200: Sealed housing
201: Groove for fixing pin
202: Fixing pin
210: Insulating material inlet
300: Insulation protection space
400: Heating device facility body

Claims (10)

Sheath heater,
And a power supply line connected to the sheath heater,
Wherein the coupling portion of the sheath heater and the power supply line is sealed with a sealing housing,
Wherein a groove for a fixing pin is formed on the side surface of the sealing housing, and the fixing pin fixed to the groove for the fixing pin is fixed to the bottom, thereby fixing the sealing housing.
Electric heating facility facility.
The method according to claim 1,
In the sheath heater,
A heating member disposed inside the tubular body, a packing for sealing the inside of the tubular body, and a heat transfer material filled in the tubular internal space formed by the tubular body and the packing,
The power supply line is drawn into the upper portion of the sealed housing,
Characterized in that the sealed housing is capable of being in close contact with and stackable in four directions without interference of the power supply line
Electric heating facility facility.
3. The method of claim 2,
The inner diameter of the tubular body is reduced by the tubular process,
Wherein the packing is tightly fixed to the inner surface of the tubular body before the axial tube process, and the portion where the packing is tightly fixed is increased after the axial tube process
Electric heating facility facility.
3. The method of claim 2,
And a rod connection terminal connected to an end of the heating wire,
Wherein the packing is tightly fixed to the inner surface of the tube while fixing the rod-shaped connecting terminal so that a part of the rod-shaped connecting terminal is exposed to the outside,
Wherein the packing is formed with a rod-shaped connection terminal insertion hole through which the rod-shaped connection terminal passes
Electric heating facility facility.
The method of claim 3,
The packing
An air discharge hole is formed to discharge the inner air to the outside in order to exclude the internal excessive pressure during the axial tube process and prevent external air from entering after the end of the axial tube process,
The air is discharged through the air discharge hole during the axial tube process,
The packing is deformed during the axial tube process,
And the inner and outer portions of the sheath heater are disconnected after the axial tube process because the packing is compressed in the axial tube process and the air discharge hole is sealed.
Electric heating facility facility.
3. The method of claim 2,
Wherein the packing is provided with a fixing portion for forcing the packing into the tube body before the axial tube process so that the packing can be fixed inside the tube body
Electric heating facility facility.
The method according to claim 6,
Characterized in that an air vent hole is formed in the fixing portion
Electric heating facility facility.
8. The method of claim 7,
Wherein the packing includes a body and a projection ring protruding from the outer periphery of the body to form a band,
Wherein an outer diameter of the projection ring is larger than a diameter of the body and smaller than an inner side diameter of the tube before the axial tube process and larger than an inner diameter of the tube after the axial tube process,
After the packing process is completed, the protrusion ring is pressed against the inner wall of the tubular body and is compressed to seal the tubular body ≪ / RTI >
Electric heating facility facility. delete delete
KR1020160030548A 2016-03-14 2016-03-14 Heating equipment using the sheath heater with packing KR101654716B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160030548A KR101654716B1 (en) 2016-03-14 2016-03-14 Heating equipment using the sheath heater with packing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160030548A KR101654716B1 (en) 2016-03-14 2016-03-14 Heating equipment using the sheath heater with packing

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1020160085327A Division KR101938744B1 (en) 2016-07-06 2016-07-06 Sheath heater packing with air hole and protrusion, and sheath heater and heating equipment using the same

Publications (1)

Publication Number Publication Date
KR101654716B1 true KR101654716B1 (en) 2016-09-06

Family

ID=56946270

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160030548A KR101654716B1 (en) 2016-03-14 2016-03-14 Heating equipment using the sheath heater with packing

Country Status (1)

Country Link
KR (1) KR101654716B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101957829B1 (en) * 2018-08-08 2019-03-13 윤채권 Heating equipment with connecting line to keep spacing
KR20200132213A (en) * 2019-05-16 2020-11-25 주식회사 삼명테크 A layed type electric under-floor heating apparatus with electromagnetic field suppression function using double composite hot wire
KR20210050271A (en) 2019-10-28 2021-05-07 상도전기공업 주식회사 Sheath heater
KR20220022652A (en) * 2020-08-19 2022-02-28 임한복 Bench with heating function
KR102647731B1 (en) 2023-12-05 2024-03-14 상도전기공업 주식회사 COD heater packing detachment automation system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040080692A (en) * 2003-03-13 2004-09-20 (주)한경시화공장 sealing structure of sheath heater for defrosting
KR100834434B1 (en) * 2007-05-04 2008-06-04 주식회사 삼명테크 Arrangement of layed type electic heat apparatus, manufacturing method the same and t-shaped sealing housing using thereof
JP2009092291A (en) * 2007-10-05 2009-04-30 Ngk Spark Plug Co Ltd Glow plug and manufacturing method therefor
KR20100002236A (en) 2009-10-27 2010-01-06 대동공업주식회사 Agricultural vehicle driver seat having armrest with electronic controller
KR20130122864A (en) * 2012-05-01 2013-11-11 (주)세진엘러텍 Manufacturing method of heater for electric heating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040080692A (en) * 2003-03-13 2004-09-20 (주)한경시화공장 sealing structure of sheath heater for defrosting
KR100834434B1 (en) * 2007-05-04 2008-06-04 주식회사 삼명테크 Arrangement of layed type electic heat apparatus, manufacturing method the same and t-shaped sealing housing using thereof
JP2009092291A (en) * 2007-10-05 2009-04-30 Ngk Spark Plug Co Ltd Glow plug and manufacturing method therefor
KR20100002236A (en) 2009-10-27 2010-01-06 대동공업주식회사 Agricultural vehicle driver seat having armrest with electronic controller
KR20130122864A (en) * 2012-05-01 2013-11-11 (주)세진엘러텍 Manufacturing method of heater for electric heating system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101957829B1 (en) * 2018-08-08 2019-03-13 윤채권 Heating equipment with connecting line to keep spacing
KR20200132213A (en) * 2019-05-16 2020-11-25 주식회사 삼명테크 A layed type electric under-floor heating apparatus with electromagnetic field suppression function using double composite hot wire
KR102240897B1 (en) * 2019-05-16 2021-04-15 (주)삼명테크 A layed type electric under-floor heating apparatus with electromagnetic field suppression function using double composite hot wire
KR20210050271A (en) 2019-10-28 2021-05-07 상도전기공업 주식회사 Sheath heater
KR20220022652A (en) * 2020-08-19 2022-02-28 임한복 Bench with heating function
KR102412084B1 (en) 2020-08-19 2022-06-21 임한복 Bench with heating function
KR102647731B1 (en) 2023-12-05 2024-03-14 상도전기공업 주식회사 COD heater packing detachment automation system

Similar Documents

Publication Publication Date Title
KR101654716B1 (en) Heating equipment using the sheath heater with packing
KR101938744B1 (en) Sheath heater packing with air hole and protrusion, and sheath heater and heating equipment using the same
US5835679A (en) Polymeric immersion heating element with skeletal support and optional heat transfer fins
US7372007B1 (en) Medium voltage heater element
US5586214A (en) Immersion heating element with electric resistance heating material and polymeric layer disposed thereon
HU225925B1 (en) Heating element with highly thermally conductive polymeric coating and method of manufacturing such a heating element
US6611660B1 (en) Radial fin thermal transfer element and method of manufacturing same
KR101622953B1 (en) Heating cable
JP2007220325A (en) Connection structure of micro-heater, and manufacturing method of micro-heater
CN104066214B (en) Electric heating tube head encapsulating method
US6740857B1 (en) Cartridge heater with moisture resistant seal and method of manufacturing same
JP2011115001A (en) Sheath cable connecting structure
KR20130122864A (en) Manufacturing method of heater for electric heating system
CN210469774U (en) Heating tube
JP2002367760A (en) Heater and glow plug
KR101838294B1 (en) Sheath heater producting method
KR101582596B1 (en) Sealed housing and Embedment heating equipment using this material and its facilities and Manufacturing method thereof
WO2015184755A1 (en) Multi-functional protection connector for tube end of electric heating tube and sealing method for tube end of electric heating tube
CN209804359U (en) Resistor with built-in metal shell temperature fuse
RU2190913C1 (en) Junction box for power cable covered with cross- linked polyethylene and method for box installation and wiring
CN205283836U (en) Heat -generating body binding post structure
US2475756A (en) Method for manufacture of electrical resistances
KR20040080692A (en) sealing structure of sheath heater for defrosting
JP2010027315A (en) Connection structure of sheathed heater and lead wire, and sheathed heater unit
JPH08148265A (en) Sheathed heater

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
J204 Invalidation trial for patent
J301 Trial decision

Free format text: TRIAL NUMBER: 2017100000253; TRIAL DECISION FOR INVALIDATION REQUESTED 20170126

Effective date: 20170724

J2X1 Appeal (before the patent court)

Free format text: TRIAL NUMBER: 2017200006187; INVALIDATION

J302 Written judgement (patent court)

Free format text: TRIAL NUMBER: 2017200006187; JUDGMENT (PATENT COURT) FOR INVALIDATION REQUESTED 20170824

Effective date: 20171222

J301 Trial decision

Free format text: TRIAL NUMBER: 2018130000016; TRIAL DECISION FOR INVALIDATION REQUESTED 20180206

Effective date: 20180222

FPAY Annual fee payment

Payment date: 20190701

Year of fee payment: 4