KR101401458B1 - Stable and Interchangeable Pipe Heater - Google Patents

Abstract

[0001] The present invention relates to a pipe heater which is easy to replace a safety device of a general sheath heater and whose stability is improved, and more specifically, a metal pin and a fuse connected to a heater coil can be detached using a coupler inside a heater pipe The bimetal fuse can be used to replace the fuse without the need to dispose of the pipe heater itself and to reuse the pipe heater. By using a bimetal fuse instead of the existing thermal fuse, a bimetal fuse A system for controlling the temperature, comprising: a system in which the above-described contents are not made inside the pipe heater but are covered with a fuse cover so as to be easily detached and detached, the system comprising a heater and a heater terminal, And a heater terminal electrically connected through the coupler In the tape heater, a fuse; A fuse housing having a lead wire connected at one end thereof and having an opening formed at one side thereof, into which the fuse is inserted; A coupler which surrounds the coupler and is coupled to the other end of the fuse housing to be electrically coupled to the cover metal tube; A pair of clip portions installed in the fuse housing in one direction or both directions and electrically connected to the coupler; A connecting portion electrically connecting the clip portion and the lead wire; And a fuse cover capable of covering or opening the opening of the fuse housing.

Description

[0001] Stable and Interchangeable Pipe Heater [0002]

[0001] The present invention relates to a pipe heater having improved safety by replacing a safety device of a general sheath heater, and more particularly, to a pipe heater using a coupler inside a heater pipe, The system can easily reuse the pipe heater by replacing the fuse without the need to dispose of the pipe heater itself and use a bimetal fuse instead of the existing thermal fuse to prevent further temperature rise even when overload occurs, The above-described contents are not made inside the pipe heater but are covered with a fuse cover so that the system can be easily installed and detached.

In general, a pipe heater is an electric heater that is the base of all heaters. The heating wire is placed in a metal protection tube in the shape of a coil in the center of the metal protection pipe, and charged with magnesium oxide, It is a heater that is robust against physical impact and has excellent heat efficiency and insulation.

Pipe heaters are widely used in dryers, electric furnaces, air heaters, gas heaters, and cold / warm water purifiers.

In recent years, interest in drinking water has been increasing, and this interest has led to the development and development of a water purifier that purifies water and is expected to provide a drinking water that considers the health of the body by a water purifier of higher performance have.

Water purifiers filter out various foreign substances and harmful substances contained in water and provide clean drinking water. Demand for water is increasing day by day. The reasons are high growth of overcrowded population and industry, expansion of urban area and abuse of land use And the pollution of the surface water that receives various kinds of wastewater is intensified, resulting from the deodorization of tap water.

Industrial wastewater, livestock wastewater, etc. are introduced into the surface water used as a water source, and the pollution degree is getting worse and it becomes unfit for drinking water.

Therefore, much effort and cost have been invested in research and development of water purifiers due to interest in drinking water and expectation of water purifiers having various functions as described above. In recent years, not only the purification of tap water but also the supply of cold water The supply of water purifiers that can be used is generalized.

As shown in FIGS. 1 and 2, a pipe heater 10 used in a conventional cold / warm water purifier is attached to a system for making ice to remove ice. The pipe heater 10 has a heater coil 12 disposed at the center of the coated metal pipe 11, And the inside of the coated metal pipe 11 is filled with magnesium oxide 13 which is an insulating material.

The metal pin 14 is fixedly connected to the heater coil 12 and the metal pin 14 is coupled to the connection terminal 16 through the thermal fuse 15 and the thermal fuse 15 is connected to the heater coil 12 via the overload The heater coil 12 is overheated, so that the fuse is automatically cut off the supply of the short-circuiting power. The electric wire or the terminal W is fixed to the connection terminal 16 by spot welding.

When power is supplied through the electric wire W, a current flows through the heater coil 12 to heat the heater coil 12, and the heat generated by the heater coil 12 causes the coated metal pipe 11).

If the heater coil is overloaded, the thermal fuse is short-circuited so that the heater pipe is not overheated. Since the thermal fuse and the metal pin are integrally formed, it is not necessary to replace only the thermal fuse with a new one. There is a problem.

In order to solve the above-described problems, the present invention provides a bipolar battery module in which a fuse is detachably coupled to a metal pin connected to a heater coil using a coupler, a fuse cover is used to attach and detach a fuse to a fuse insertion tube, Temperature fuse or the like can be used in a double manner, thereby providing a pipe heater with improved stability that can control the temperature rise even when an overload is applied.

The present invention relates to a method of manufacturing a metal pipe, which comprises a coated metal pipe, a heater coil disposed along the center of the coated metal pipe, magnesium oxide filled in the coated metal pipe, a metal pin fixedly connected to the heater coil, And a fuse which is detachably mounted on the coupler and is short-circuited when the heater coil is overheated due to an overcurrent flowing through the terminal binding piece.

In the coupler, a plurality of cutting slits are formed, and a stopper for limiting a mounting position of the bimetallic fuse is protruded from the center of the coupler.

The present invention relates to a pipe heater including a heater and a heater terminal electrically connected to the cutout slit through a plurality of formed couplers, the pipe heater comprising: a fuse; A fuse housing having a lead wire connected at one end thereof and having an opening formed at one side thereof, into which the fuse is inserted; A coupler which surrounds the coupler and is coupled to the other end of the fuse housing to be electrically coupled to the cover metal tube; A pair of clip portions installed in the fuse housing in one direction or both directions and electrically connected to the coupler; A connecting portion electrically connecting the clip portion and the lead wire; And a fuse cover capable of covering or opening the opening of the fuse housing.

The fuse is either a thermal fuse or a bimetallic fuse.

The clips are each formed with a pair of wings on both sides extending in the longitudinal direction, and a wire of the thermal fuse or the bimetal fuse can be inserted into the wing.

A first fastening hole is formed in the fuse lid, and a second fastening hole is formed in the fuse housing at a corresponding position of the first fastening hole.

A thermal fuse, a thermal fuse, a bimetal fuse, or a bimetallic fuse and a bimetallic fuse are inserted into and connected to one end and the other end of the coated metal pipe, respectively.

As described above, according to the present invention, it is necessary to detachably connect a metal pin and a fuse connected to a heater coil using a coupler, or detachably connect a metal pin and a fuse using the coupler, thereby disposing the pipe heater itself , The fuse can be easily replaced to reuse the pipe heater.

Also, the present invention can be used in a pipe heater by using a fuse cover, so that even when an overload is applied to the pipe heater, the bimetallic fuse or the like further controls the temperature rise.

Further, the present invention provides a fuse cover which can be easily detached and removed from a fuse housing, and a bimetal and a thermal fuse can be used by a simple wiring through a clip portion, so that the stability is further strengthened and even if a safety device fails, Is possible.

1 is a perspective view of a conventional pipe heater,
2 is a cross-sectional view showing a conventional pipe heater
3 is an exploded perspective view showing a pipe heater according to a preferred embodiment of the present invention.
4 is a cross-sectional view showing a pipe heater according to a preferred embodiment of the present invention.
5 is a view showing a metal pin and a fuse coupled to a coupler according to a preferred embodiment of the present invention;
6 is a view showing a metal pin and a fuse before being coupled to a coupler according to a preferred embodiment of the present invention;
7 is a view showing a metal pin and a fuse after being coupled to a coupler according to a preferred embodiment of the present invention;
8 is a plan view of a coupler according to a preferred embodiment of the present invention.
9A and 9B are exploded perspective views showing a fuse connected to a pipe heater according to a preferred embodiment of the present invention.
10 is a view showing various fuses inserted into a fuse insertion tube according to a preferred embodiment of the present invention.
FIG. 11 is an exploded perspective view of the arrangement of the fuse housing of FIG. 9a. FIG.
12 is a cross-sectional view showing a pipe heater housing coupled with a cover metal tube in accordance with a preferred embodiment of the present invention.
Figures 13a, b, and c illustrate various uses in accordance with an embodiment of the present invention.

Hereinafter, a pipe heater according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 to 8, a pipe heater (or a safety device) 100 according to a preferred embodiment of the present invention is provided with a cover metal tube 110; A heater coil 120 installed along the inner center of the coated metal pipe 110; Magnesium oxide (130) filled in the coated metal pipe (110); A metal pin 140 fixedly connected to the heater coil 120; A coupler 150 coupled to the metal pin 140; And a bimetal fuse 160 detachably attached to the coupler 150 and short-circuited when the heater coil 120 is overheated due to an overcurrent flowing to the connection terminal 16 of the electric wire W. do.

The cover metal tube is formed of a metal tube 110 having a U shape or various shapes and the heater coil 120 is installed along the inner center of the cover metal tube 110. The magnesium oxide 130 is wound around the cover metal tube 110, So that the position of the heater coil 120 is fixed.

The metal pin 140 is fixedly connected to the heater coil 120 and the coupler 150 is configured to be coupled to the metal pin 140.

A plurality of cutout slits 151 are formed in the coupler 150 and a stopper 152 protruding from the coupler 150 is formed at the center of the coupler 150 to limit the mounting position of the bimetal fuse 160.

6 and 8, the coupler 150 is formed by forming a cutting slit 151 on a plate-like body made of a conductor or metal, and then rolling the bimetal fuse 160 And the metal pin 140 can be removably and elastically coupled.

That is, the coupler 150 is in a state in which the cutout 152 of the coupler 150 of FIG. 9, which is inserted in FIG. 8 before the bimetal fuse 160 and the metal pin 140 are fitted, So that the bimetal fuse 160 and the metal pin 140 can be tightly coupled to each other by a predetermined elastic force of the cutout 152 and the cutout slit 151. 10 is a plan view showing the expanded state of the coupler 150. FIG.

The bimetal fuse 160 is caught by the stopper 152 when the bimetal fuse 160 is installed so that the position of the bimetal fuse 160 is restricted so that the bimetal fuse 160 does not fall into the coupler 150 too much.

9A to 13C, a safety device for a pipe heater according to another preferred embodiment of the present invention includes a heater and a heater terminal 240, and a plurality of cutting slits 151 And is electrically connected to the heater terminal 240 through the coupler 150. [

Here, the coupler 150 is formed by forming a cutting slit 151 in a plate shape, and then rounding it.

The pipe heater according to the present invention includes a fuse 160, a fuse housing 250, a coupling portion 235 surrounding the coupler 150 and molded at the other end of the fuse housing 250, a pair of clip portions 205 And a fuse cover 260. When the fuse 160 is abnormal, the fuse cover 260 can be opened and the fuse 160 can be easily replaced.

9A to 12, the fuse housing 250 includes an opening 220 to which a lead wire 10 is connected at one end and an interior of which is opened, And is a housing into which the fuse 160 is inserted, and is made of an insulating material such as synthetic resin. Also, a pair of clip portions 205 and 210 and a connection portion 206 described below may be further inserted therein.

Further, the fuse housing 250 may have an opening 220 having a cylindrical outer shape and a circular cross section, for example, and a predetermined fuse 160 may be inserted in advance to be overloaded, Shut off the power supply in case of a rise.

The coupling portion 235 is formed of an insulating material such as a synthetic resin so as to surround the coupler 150 and to be coupled to the other end of the fuse housing 250 in order to engage with the cover metal tube 110.

The pair of clip portions 205 and 210 are electrically connected to the coupler 150 by forming a thin metal plate extending in one direction or both directions inside the fuse housing 250 and electrically connecting the fuse 160 To supply the current to the power supply.

Each of the clip units 205 and 210 has a pair of wings 205-1, 205-2, 210-1 and 210-2 formed on both sides thereof extending in the longitudinal direction, and the thermal fuses 160-1 Or the wires 162-1 and 162-2 of the bimetallic fuse 160-2 may be inserted into the wing portions 205-1, 205-2, 210-1 and 210-2.

The connecting portion 206 is a conductor for electrically connecting the clip portion 210 and the lead wire 10 and is connected to the lead wire 10 by pressing the lead wire 10 in a ring shape, And receives the current through the clip units 205 and 210.

The fuse cover 260 may cover or open the opening 220 of the fuse housing 250. The cover may include a first fastener 262 and a second fastener 262, And a second fastener 264 is formed in the fuse housing 250 at a corresponding position.

Thereafter, the fuse 160 is removed from the clip portions 205 and 210 by opening the fuse cover 260 to replace the fuse 160. After replacing the fuse 160 with a new fuse 160, (Not shown).

Here, the fuse 160 may be one of a thermal fuse 160-1 and a bimetallic fuse 160-2.

As shown in FIGS. 13A, 13B, and 13C, a thermal fuse 160-1, a thermal fuse 160-1, a thermal fuse 160-1, and a bimetallic fuse 160-1 are respectively formed at one end and the other end of the coated metal pipe 110 ' And the pipe heater housings 200-1 and 200-2 in which the bimetallic fuse 160-2 and the bimetallic fuse 160-2 are inserted.

Therefore, the thermal fuse 160-1, the thermal fuse 160-1, the thermal fuse 160-1 and the bimetal fuse 160-2, or the bimetal fuse 160-2 and the bimetallic fuse 160-2, -2) is inserted into both ends of the cover metal tube 110, the stability is improved even when the heater is overloaded. To this end, the bimetal fuse 160-2 may be set lower than the corresponding temperature of the thermal fuse 160-1 so that the bimetallic fuse 160-2 may be cut off before the thermal fuse 160-1 is operated .

10: Lead wire 100: Pipe heater
110, 110 ': Coated metal tube 120: Heater coil
130: magnesium oxide 140: metal pin
150: coupler 151: incision slit
152: Stopper 160: Fuse
160-1: Thermal fuse 160-2: Bimetal fuse
162-1, 162-2: wires 200-1, 200-2: pipe heater housing
205, 210: clip units 205-1, 205-2, 210-1, 210-2:
206: connection part 220: opening part
250: fuse housing 235:
240: heater terminal 260: fuse cover
262: first fastener 264: second fastener

Claims (7)

A cover metal tube 110;
A heater coil 120 installed along the inner center of the coated metal pipe 110;
Magnesium oxide (130) filled in the coated metal pipe (110);
A metal pin 140 fixedly connected to the heater coil 120;
A coupler 150 coupled to the metal pin 140; And
And a fuse 160 detachably attached to the coupler 150 and short-circuited when the heater coil 120 is overheated due to an overcurrent flowing into the terminal binding piece 20 of the electric wire 10 ,
Wherein a plurality of cutting slits 151 are formed in the coupler 150 and a stopper 152 protruding from the coupler 150 protrudes from the coupler 150 to restrict a mounting position of the fuse 160. [ Convenient and reliable pipe heater. delete A pipe heater comprising a heater coil (120) installed inside a coated metal pipe (110) and a heater terminal (240) electrically connected through a coupler (150) having a plurality of cutout slits (151)
A fuse 160;
A fuse housing (250) having an opening (220) formed at one end thereof with a lead wire (10) connected thereto and having the fuse (160) inserted into the opening (220);
An engaging portion 235 surrounding the coupler 150 to be coupled with the cover metal tube 110 and molded at the other end of the fuse housing 250;
A pair of clip portions 205 and 210 installed in the fuse housing 250 in one direction or both directions to be electrically connected to the coupler 150;
A connecting portion 206 electrically connecting the clip portion 210 and the lead wire 10; And
A fuse cover 260 that can cover or open the opening 220 of the fuse housing 250;
Wherein the safety device comprises a plurality of pipe heaters. The method of claim 3,
Wherein the fuse (160) is one of a thermal fuse (160-1) and a bimetallic fuse (160-2). 5. The method of claim 4,
The clip portions 205 and 210
A pair of wing portions 205-1, 205-2, 210-1 and 210-2 are formed on both sides of the bimetal fuse 160-2 extending in the longitudinal direction, and the thermal fuse 160-1 or the bimetal fuse 160-2 And the wires (162-1, 162-2) can be inserted into the wing portions (205-1, 205-2, 210-1, 210-2). heater. The method of claim 3,
A first fastening hole 262 is formed in the fuse cover 260 and a second fastening hole 264 is formed in the fuse housing 250 at a corresponding position of the first fastening hole 262 Easy to replace safety devices and improved stability pipe heater. The method of claim 3,
A thermal fuse 160-1, a thermal fuse 160-1, a thermal fuse 160-1 and a bimetal fuse 160-2 or a bimetallic fuse 160-1 and 160-2 are respectively connected to one end and the other end of the coated metal pipe 110, 2 and a bimetallic fuse 160-2 are inserted into the fuse housing 250. The safety device of the present invention is easy to replace and improves safety.

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