KR20160125081A - Prevent overheating device for hot water heater - Google Patents

Prevent overheating device for hot water heater Download PDF

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Publication number
KR20160125081A
KR20160125081A KR1020150055794A KR20150055794A KR20160125081A KR 20160125081 A KR20160125081 A KR 20160125081A KR 1020150055794 A KR1020150055794 A KR 1020150055794A KR 20150055794 A KR20150055794 A KR 20150055794A KR 20160125081 A KR20160125081 A KR 20160125081A
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KR
South Korea
Prior art keywords
terminal tube
power
fuse
lead wire
tube
Prior art date
Application number
KR1020150055794A
Other languages
Korean (ko)
Inventor
홍현의
Original Assignee
홍현의
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
Application filed by 홍현의 filed Critical 홍현의
Priority to KR1020150055794A priority Critical patent/KR20160125081A/en
Publication of KR20160125081A publication Critical patent/KR20160125081A/en

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    • 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
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters
    • H05B3/023—
    • 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
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • H05B2203/021—Heaters specially adapted for heating liquids

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  • Fuses (AREA)

Abstract

The present invention relates to an overheating prevention device for a hot water heater, which prevents malfunction, has an extended service life, and is easily assembled and replaced by improving a connection structure of a fuse. Since a fuse is connected through a welding process or a soldering process, an existing overheating prevention device has problems on malfunctions, a decrease in the service life, and hard assembly and replacement. In order to solve the problems, according to the present invention, a power lead wire is connected to a power terminal tube connected to a control unit, and a fuse, to which a heater lead wire is connected, is provided between a metal tube and a heat generation unit in a heater terminal tube connected to a heater wire, wherein a male screw portion is formed on an outer peripheral surface of each of the power lead wire and the heater lead wire, and the male screw portion is screwed to a female screw portion formed on an inner peripheral portion of each of the power terminal tube and the heater terminal tube. Therefore, according to the present invention, when a terminal tube and a lead wire of the fuse are connected, a welding process or a soldering process is not used, thereby preventing malfunction and a decrease in the service life caused by damage to the fuse. In addition, since the terminal tube and the fuse are connected through a screw coupling method or a simple structure made up by a coupling port, an elastic portion, a pin hole, or a compression portion, the overheating prevention device can be easily assembled. A shorted fuse can be simply replaced, thereby enabling easy management of the hot water heater.

Description

TECHNICAL FIELD [0001] The present invention relates to an overheating prevention device for a hot water heater,

The present invention relates to a device for preventing overheating by being installed in a hot water heater for heating water filled in a container by using a heating wire. More particularly, the present invention relates to a device for preventing a malfunction by improving a connection structure of a fuse, The present invention relates to an overheat prevention device for a hot water heater.

Generally, a hot water heater is used to easily heat a heating object such as a large amount of water, liquid chemicals or aqueous solution contained in a water bottle, a container, a water tank, etc. to a predetermined temperature and has a high thermal efficiency, And is widely used for industrial and household use.

Such hot water heaters are disclosed in Korean Utility Model Registration No. 20-0441512 and Korean Patent Registration No. 10-0967690, where the water level of the object to be heated contained in the water tank is detected when the water level is low, thereby preventing various electric safety accidents and risks Is disclosed. That is, the above-mentioned underwater heater is provided so as to prevent heating or fire through an operation of opening and closing the power switch while the float is lifted and lowered according to the level of the water surface of the object to be heated in the water bottle. However, it takes a considerable amount of time to control the operation of the heating element by controlling the operation of the heating element indirectly by using the sensing function of the water temperature sensing tube and the water level sensing function according to the float elevation as described above. There is a limitation in preventing a fire due to the lack of a function of directly controlling the overheating.

Therefore, recently, a structure has been proposed in which a fuse is used to directly sense a heating temperature of a heating element, and when the heating element becomes a certain temperature or more, the power source is short-circuited to prevent a fire due to overheating.

However, such an overheat prevention device has a problem that the fuse is often damaged due to the structural characteristic that the lead wire of the fuse must be directly connected to the power terminal and the heating element by means of welding, soldering or the like so that the malfunction and life are shortened, There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a device for preventing overheating of a hot water heater by improving a connection structure of a fuse connected to a power supply terminal and a heating wire,

It is another object of the present invention to provide an apparatus for preventing overheating of a hot water heater, which can be easily assembled by connecting a fuse to a terminal tube by a simple structure, and can also easily replace a short-circuited fuse.

In the apparatus for preventing overheating of a hot water heater according to the present invention, a power lead line is connected to a power terminal tube connected to a control unit, and a fuse having a heat conductive lead wire connected to the heat conduction tube is connected between the metal tube and the heat generating unit, A male screw portion is formed on an outer circumferential surface of the power lead wire and the heat conductive lead wire, and the male screw portion is screwed to the female screw portion formed on the inner peripheral surface of the power terminal tube and the heat conduction terminal tube.

According to the apparatus for preventing overheating of the hot water heater according to the present invention, welding or soldering is not used when connecting the lead wire of the fuse to the terminal tube, thereby preventing malfunction and shortening of the service life due to damage of the fuse.

Further, since the fuse is connected to the terminal tube by a simple structure using a screw coupling method or a simple structure in which a coupling hole, an elastic portion, a pinhole, and a crimping portion are formed, it is easy to assemble the overheat prevention device, So that the maintenance of the hot water heater can be more easily performed.

1 is a view showing a state of use of a hot water heater provided with the overheat prevention device of the present invention.
2 is a sectional view showing a first embodiment of the overheat prevention device according to the present invention.
3 is a sectional view showing a second embodiment of the overheat prevention device according to the present invention.
4 is a sectional view showing a third embodiment of the overheat prevention device according to the present invention.
5 is a sectional view showing a fourth embodiment of the overheat prevention device according to the present invention.
6 is a sectional view showing a fifth embodiment of the overheat prevention device according to the present invention.
7 is a sectional view showing a sixth embodiment of the overheat prevention device according to the present invention.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the hot water heater installed with the overheating prevention device of the present invention is used when the user wants to heat the water filled in the container 1 to a desired temperature. The metal heater 11 Is provided with a heat generating portion 12 at the tip of the heat generating portion.

The heating unit 12 is inserted into the water filled in the container 1 to heat the water. In the heating unit 12, an electric heating line is installed, and heat is generated by the applied electric power. It is preferable that the heat generating portion 12 is formed in a spiral shape in order to maximize the surface area in contact with water.

An overheating prevention device is provided inside the metal pipe 11 of the hot water heaters so that the water level is lowered to overheat the heat generating part 12 or automatically shut off the power when the heating part 12 is overheated due to malfunction of the control part 10. [ Is installed.

As shown in FIG. 2, the overheat prevention device is provided between the heating unit 12 provided with the heating wire 32 and the metal pipe 11.

The overheat prevention apparatus of the present invention is connected to the power terminal tube 20 which is a metal material connected to the control unit 10 so as to supply power to the heating wire 33 and to cut off the power when the heating wire 33 is overheated have.

A fuse 40 is coupled to a lower side of the insulator 30 and a power supply 40 is connected to the power supply terminal tube 20, The lead wire 41 is connected to the power terminal tube 20 through the insulator 30 and the lead wire 42 having the fuse 40 formed on the lower side is connected to the lead terminal tube 50 connected to the lead wire 33 do.

Therefore, the fuse 30 prevents the failure or fire of the hot water heater by blocking the supply of power by shorting the lead wire when the heating wire 33 is overheated, and the fuse 30 is made of rubber, synthetic resin, And a protective pipe 32 made of a metal material for protecting the fuse 30 is coupled to the outer side of the insulating pipe 31. [

As shown in the enlarged view, a male screw portion 41a is formed on the outer peripheral surface of the power lead 41 passing through the insulator 30. The male screw portion 41a is connected to the power terminal tube 20 And is simply connected by being screwed to the female threaded portion 21 formed on the inner peripheral surface.

Likewise, the heat conductive lead wire 42 is also connected by screwing the male screw portion 42a formed on the outer peripheral surface thereof to the female screw portion 51 formed on the inner peripheral surface of the heat transfer terminal tube 50. [

3 is connected to the power terminal tube 20a after the power lead line 41 is first coupled to the coupling hole 60 as shown in FIG. 3, and on the upper side of the coupling hole 60, And an insertion hole 62 penetrating the upper side and the lower side is formed in the seating groove 61.

A power supply lead wire 41 is inserted into the insertion hole 62 and bent so that its tip end is seated in the seating groove 61. The coupling hole 60 to which the power lead wire 41 is coupled is inserted into the power terminal tube 20a And the connection is made.

The coupling hole 60 is preferably made of metal for smooth connection. The coupling hole 60 may be formed of a magnet to prevent the power terminal tube 20a from being drawn out, a power lead 41 bent from a synthetic resin, May be connected to the inner circumferential surface of the power terminal tube (20a) in close contact with each other.

The heat conductive lead wire 42 is connected in the same manner as the above-described method using a coupling hole 60 which is coupled to the inside of the heat transfer terminal tube 50a.

4, the fuse 40 can be easily connected by a one-touch method. At this time, the fuse 40 is provided with a pair of space portions 22 (corresponding to the power terminal tube 20b and the heating terminal tube 50b) 52 are formed on the inner wall of the space portion 22 and the elastic portions 23, 53, which are always given elasticity inward, are formed in the space portions 22, 52, respectively.

The ends of the power lead 41 and the heat conductive lead wire 42 are folded to form the folded portions 41b and 42b respectively and then pressed and inserted into the elastic portions 23 and 53 to be easily connected At this time, the bent portions 41b and 42b are interrupted by the elastic force of the elastic portions 23 and 53 to be firmly connected.

The fuse 40 can be connected by forming a pair of pinholes 24 and 54 opposed to each other in the power supply terminal tube 20c and the heat conduction terminal tube 50c as shown in FIG. 41c and 42c are formed at the ends of the heat conductive lead wires 41 and the heat conductive lead wires 42 and then inserted into the inside of the electric heating terminal tube 50c and the power terminal tube 20c, ) 55 are inserted and connected to the pinholes 24 and 54 and the rings 41c and 42c, respectively.

6 by using the power terminal tube 20c and the heat conduction terminal tube 50c in which the pinholes 24 and 54 are formed without using the fixing pins 25 and 55, And the heat conductive lead wire 42 are respectively passed through the pinholes 24 and 54 and fixed by bending.

At this time, the power lead 41 and the heat conductive lead wire 42 are inserted into the pinholes 24 and 54 from the inside or the outside of the terminal pipes 20c and 50c and then wound around the outer circumferential surface of the terminal pipes 20c and 50c And is firmly fixed when it is inserted into the opposite pinhole 24 (54).

7 shows a state in which the power lead 41 and the heat conductive lead wire 42 are inserted into the power terminal tube 20d and the heat conduction terminal tube 50d respectively and the crimping portion The crimping portions 26 and 56 are formed by caulking so that the outer circumferential surfaces of the lead wires 41 and 42 are pierced And is firmly connected.

In the apparatus for preventing overheating of the hot water heater according to the present invention, the water of the container 1 is reduced due to the carelessness of the user and the heating wire 33 is overheated or the heating wire 33 is heated to a certain temperature The lead wires 41 and 42 of the fuse 40 are short-circuited to cut off the power supply.

At this time, since welding or soldering is not used when connecting the terminal tubes to the lead wires 41 and 42 of the fuse 40, it is possible to prevent malfunctions and shortening of the service life due to damage of the fuse 40 .

Further, by a simple structure in which a screw coupling method is employed or the coupling hole 60, the elastic portions 23 and 53, the pinholes 24 and 54, and the crimping portions 26 and 56 are formed, By connecting the fuse 40, it is easier to assemble the overheat prevention device, and the short-circuited fuse 40 can be easily replaced, which makes it easier to maintain the hot water heater.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. will be.

10: control unit 11: metal tube
12: heating portion 20, 20a, 20b, 20c, 20d: power terminal tube
21: female thread portion 22, 52:
23,53: Elastic part 24,54: Pinhole
25, 55: fixing pins 26, 56:
30: Insulator 31: Insulation
32; Protection pipe 33:
40: Fuse 41: Power lead
41a: Male threads 41b, 42b:
41c, 42c: ring portion 42: heating lead wire
50, 50a, 50b, 50c, 50d: an electric heating terminal tube 60:
61: seat groove 62: insertion hole

Claims (7)

A power lead terminal 41 connected to the power terminal tube 20a 20b 20c and 20d connected to the control unit 10 and an electric heating terminal tube 50a 50a connected to the electric heating wire 33 A fuse 40 to which the heat conductive lead wire 42 is connected is provided between the metal tube 11 and the heat generating portion 12,
The male threaded portions 41a and 42b are formed on the outer circumferential surfaces of the power lead 41 and the heat conductive lead wire 42. The male threaded portions 41a and 42b are connected to the power terminal tube 20 and the electrothermal terminal tube 50 (21) (51) formed on the inner circumferential surface of the heat exchanger (11). The method according to claim 1,
A protection pipe 32 is coupled to the outside of the insulation pipe 31 and a protection pipe 32 and a protection pipe 32 are connected to the outside of the fuse 40, Wherein an insulator (30) through which a power lead line (41) penetrates is coupled between the heat sink (20), (20a), (20b), (20c) and (20d). The method according to claim 1,
The power lead 41 and the heat conductive lead wire 42 are coupled to and connected to a coupling hole 60 inserted into the power terminal tube 20a and the electric heating terminal tube 50a respectively, Wherein a power lead line (41) passing through the insertion hole (62) formed at the center and a seating groove (61) are formed so that the leading ends of the heat conductive lead wires (42) can be folded and seated. The method according to claim 1,
A pair of opposing space portions 22 are formed in the power terminal tube 20b and the heating terminal tube 50b and an elastic portion 23 is provided in the space portion 22 to apply an elastic force inward , And a power lead line (41) and a heat conductive lead wire (42) having bent portions (41b) and (42b) formed at the tip end thereof are inserted into the elastic portion (23). The method according to claim 1,
A pair of pinholes 24 and 54 opposed to each other are formed on the power terminal tube 20c and the heat conduction terminal tube 50c and the power lead line 41 and the heat conductive lead wire 42 are provided with a ring- 41c and 42c are formed and inserted into the power terminal tube 20c and the heating terminal tube 50c and the fixing pin 25 is inserted into the pin holes 24 and 54 and the hook portions 41c and 42c. (55) are inserted and connected to each other. 6. The method of claim 5,
The power lead 41 and the heat conductive lead wire 42 are connected to the pinholes 24 and 54 by being inserted and bent from the inside or the outside of the power terminal tube 20c and the heat conduction terminal tube 50c. Overheating prevention device of electric heater. The method according to claim 1,
The power terminal tube 20d and the electric heating terminal tube 50d are provided with crimping portions 26 and 56 caulking to be connected to the power lead 41 and the heat conductive lead wire 42 inserted inward Wherein the heat exchanger is provided with a heat exchanger.
KR1020150055794A 2015-04-21 2015-04-21 Prevent overheating device for hot water heater KR20160125081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150055794A KR20160125081A (en) 2015-04-21 2015-04-21 Prevent overheating device for hot water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150055794A KR20160125081A (en) 2015-04-21 2015-04-21 Prevent overheating device for hot water heater

Publications (1)

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KR20160125081A true KR20160125081A (en) 2016-10-31

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KR1020150055794A KR20160125081A (en) 2015-04-21 2015-04-21 Prevent overheating device for hot water heater

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102255770B1 (en) * 2020-05-21 2021-05-25 이건희 Overheat protection device of immersion heaters
KR20220058210A (en) * 2020-10-30 2022-05-09 이건희 Immersion heaters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102255770B1 (en) * 2020-05-21 2021-05-25 이건희 Overheat protection device of immersion heaters
KR20220058210A (en) * 2020-10-30 2022-05-09 이건희 Immersion heaters

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