KR100749019B1 - A marine application waterproofing type electric heater - Google Patents

Abstract

A waterproof electric heater for a ship is provided to prevent a disorder of a control unit by separately providing a pipe heater and a control box to interrupt heat radiation from the heater. A waterproof electric heater for a ship includes a fixing frame(10), a pipe heater(20), a heater case(30), and a control box(40). A fixing piece having a fixing hole is formed in the fixing frame. The pipe heater is installed on one side of the upper surface of the fixing frame by a bracket. The heater case is assembled on the upper surface of the fixing frame so as to expose a terminal of the pipe heater. A plurality of air introduction holes and air discharge holes are formed in the heater case. The control box is detachably installed on the other side of the upper surface of the fixing frame and is separated from the heater case. The control box is connected to the terminal of the pipe heater to control the drive of the pipe heater by interrupting a power source. The heat radiation from the pipe heater is prevented from transferred to the control box by the heater case.

Description

Waterproof Electric Heater for Ships {A MARINE APPLICATION WATERPROOFING TYPE ELECTRIC HEATER}

1 is a perspective view of a conventional natural convection type electric heater.

Figure 2 is a perspective view of a water-proof electric heater for ships according to an embodiment of the present invention.

3 is an exploded perspective view of FIG. 2;

4 is a view schematically showing the configuration of a pipe heater according to the present invention.

5 is a view showing a state in which the lid of the control box according to the present invention upside down.

6 is a view showing a switch unit of a bimetal switch according to the present invention;

* Explanation of symbols on main parts of the drawings *

10. Fixed frame 12. Fixed member

20. Pipe heater 22. Bracket

30. Heater case 40. Control box

50. Reflector 60. Insulation member

110. Fixing piece 112. Fixing hole

202. Heating cable 204. Insulation material

206. Metal protective tube 210. Terminal section

212.Lead terminals 214. Insulator

216. Power connection terminal 310. Air inlet hole

320. Air outlet 410. Bimetal switch

412. Internal temperature sensor 414. External temperature sensor

416. Level adjuster 420. Signal lamp

430. Cable Grand 432. Power Cable

The present invention relates to a water-proof electric heater for ships, and more specifically, to improve the insulation and waterproof properties, and to be installed on the wall or the floor by slimming and lightweighting to expand the installation space, drying and heating in a natural convection phenomenon The present invention relates to a water-proof electric heater for a ship, which is provided to a ship having a large amount of base and a narrow space by maximizing efficiency.

In general, electric heater is a kind of heating device configured to increase the temperature of the room by heating the air by using electric heat.It is simpler to install, cheaper to maintain, and less dangerous to fire than heating device using fossil fuel as a heat source. Since it has a small advantage, it is widely used in daily life.

In particular, it is useful to install in a narrow space in cabins, laundry drying rooms, washrooms, etc. in ships, and electric heaters are widely used for heating because there is no risk of falling when the ship is shaken.

On the other hand, a conventional electric heater is provided with a heating coil such as nichrome wire, and the electric heater of heating the surrounding air by reflecting the high-temperature radiant heat emitted therefrom using a reflector has been released, but the conventional electric heater as described above The heater was exposed to the outside of the heating coil and there was a risk of fire and burns due to careless handling.

In order to solve this problem, the heating plate 20 is formed inside the case 10 in which a plurality of air inlet holes 11 and air outlet holes 12 are formed in a 'natural convection electric heater' of Korean Patent No. 10-0566968. Disclosed is a natural convection type electric heater equipped with).

1 is a perspective view showing a conventional electric heater. As shown in FIG. 1, the conventional natural convection type electric heater is installed inside the case 10 and is provided with a plurality of heating plates 20 heated by an external power supply and the outside of the case 10. It is composed of a switch unit 40 for intermitting the power supplied to the heating plate 20, a plurality of air inlet hole 11 is formed on the lower surface of the case 10 and a plurality of air outlet holes 12 on the upper surface ) Is formed. At this time, the air flow path 30 is formed so that the air introduced into the air inlet hole 11 rises to reach the air outlet hole 12.

Accordingly, the cold air of the room introduced into the air inlet 11 is heated by the heat emitted from the heating plate 20 while rising through the air flow path 30 formed between the heating plate 20, The warm air formed in the process expands and continues to rise by natural convection to be discharged into the room through the air outlet 12 to naturally increase the temperature of the room.

However, in the conventional electric heater, the switch unit 40 which intercepts the power supplied to the heating plate 20 is integrally provided on the outside of the case 10, and the heating plate 20 is connected to the heating plate 20 during operation of the electric heater. Since the case 10 is hotly heated by the heat transmitted by the case, the case 10 takes a predetermined time to cool down even when the power supply is cut off, so that the case 10 may not be pressed correctly. Users have a high risk of electric accidents such as burns and electric shocks, and in case of failure of the switch unit 40 due to overheating, the user needs to cool down the case 10 to proceed with repairs and replacements. There is a problem falling.

In addition, since the switch unit 40 can select only the on / off of the heating plate 20, not only can not control the room temperature constantly, but also has a lot of unnecessary electrical energy consumption, such as fear of fire due to overheating.

In addition, since there is a gap between the switch unit 40 and the case 10 as a hole is used in which the switch unit 40 is mounted in the case 10, it is difficult to avoid leakage through this and there is no complement means for leaking. Even a slight drop of water may cause a short circuit, and such a short circuit may cause a malfunction of the circuit or even damage the heater itself.

In addition, in order to fix the heating plate 20 in a state spaced apart from each other at regular intervals, a plurality of gap holding holes 21 provided between the case 10 and the heating plate 20, and the heating plate 20 and Since there is no insulation member between the power cables 50, there is a big problem of electric shock in a ship exposed to moisture or moisture.

Accordingly, an object of the present invention is to provide a marine waterproof electric heater which minimizes a failure by separating a heater and a control box.

In addition, another object of the present invention is to provide a water-proof electric heater for ships, which is installed in a space where water-proofing of a ship is required, to solve the problems from the presence of electric shock and leakage.

In addition, another object of the present invention is to provide a marine waterproof electric heater for improving the waterproofness of the electric heater by improving the structure of the packing used in the assembly of the marine waterproof electric heater.

According to an embodiment of the present invention, a waterproof electric heater for a ship includes: a fixing frame having a fixing piece having a fixing hole through a fixing member for fixing to a bottom or a wall of a vessel; A pipe heater installed by a bracket on an upper surface side of the fixed frame; A heater case assembled to an upper surface of the fixed frame to expose the terminal part of the pipe heater and having a plurality of air flow holes formed up and down; And a control box installed detachably on the other side of the upper surface of the fixed frame to be spaced apart from the heater case, connected to a terminal of the pipe heater to control the driving of the pipe heater by controlling the power supply. The heater case is characterized in that the heat from the pipe heater to block the transmission to the control box.

In addition, the pipe heater according to the present invention is formed so that the terminal part protrudes to one side in a sealed state in which a heating wire is embedded in a metal protective tube formed in a hollow structure and filled with magnesium oxide (MgO), which is an insulating material, and sealed. It is preferable that a plurality of heat dissipation fins are formed on the outer circumferential surface of the protective tube so as to discharge heat therein.

On the other hand, waterproof marine electric heater according to another embodiment of the present invention, the upper surface of the fixed frame and the inner surface of the heater case reflects the high-temperature radiant heat emitted by the pipe heater to transfer heat to the heater case Characterized in that it comprises a; further comprises a pair of reflecting plate to block the. Here, an insulating member is further provided between the reflecting plate coupled to the upper surface of the fixing frame and the bracket for fixing the pipe heater.

The control box according to the present invention comprises a rectangular body and a lid and a locker for coupling the body and the lid to each other, wherein the control box is a waterproof box equipped with rubber packing along the outer circumferential surface of the lid connected to the body. It is done.

The control box may further include: a power supply / temperature setting switch configured to supply and cut off power to the pipe heater and set a heating temperature; A signal lamp indicating a driving state of the pipe heater; And a bimetal switch for controlling the driving of the pipe heater by detecting whether the temperature is higher than a preset temperature by sensing an indoor temperature, wherein the waterproof box is equipped with a rubber packing along an outer circumferential surface of the upper box and the lower box. desirable.

The control box may further include a cable gland having a through hole through which a power cable for supplying power to the pipe heater passes. The cable gland may be installed at a rear surface of the control box.

In addition, the bimetal switch according to the present invention includes: an internal temperature sensing unit installed adjacent to the pipe heater and sensing an internal temperature of the electric heater; An external temperature sensor installed at an upper surface of the control box to sense an indoor temperature; And a level adjusting unit installed on an upper surface of the control box to set a temperature.

Here, the level control unit, and a level control body fixedly coupled to the upper surface of the control box by a screw; A level adjusting lid coupled to the level adjusting body; And a rotating shaft penetrating through the control box to the center of the level adjusting body to be inserted into the inner insertion groove of the level adjusting lid. Preferably, the rotating shaft and the control box are sealed by rubber packing.

Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail as follows.

2 is a perspective view of a waterproof electric heater for ships according to an embodiment of the present invention, Figure 3 is an exploded perspective view of FIG.

As shown in Figures 2 and 3, the marine waterproof electric heater according to the present invention comprises a fixed frame 10, a pipe heater 20, the heater case 30 and the control box 40.

First, the fixing frame 10 is formed with a fixing piece 110 having a plurality of fixing holes 112 so that the fixing member 12 for fixing to the bottom or wall surface of the vessel. In addition, the fixing frame 10 is made of stainless steel.

Next, the pipe heater 20 according to the present invention will be described.

4 is a view schematically showing the configuration of a pipe heater 20 according to the present invention.

As shown in FIG. 4, the pipe heater 20 is bent in a 'U' shape as a whole, so that a wiring connection structure is formed on only one side, and thus the wiring length is shortened. The pipe heater 20 includes a heating wire 202 in a metal protective tube 206 in the shape of a coil, and is filled with and compressed with magnesium oxide (MgO) having excellent thermal conductivity and insulation property as an insulating material 204 to externally compress the same. It is robust to physical impact and improves thermal efficiency of electric thermal energy, and can be properly processed in various shapes according to usage.

In addition, the pipe heater 20 is formed such that the terminal portion 210 coated with silicon protrudes outward. The terminal unit 210 is connected to the control box 40 for supplying power through the lead terminal 212 is manufactured by adopting a welding method according to the optimum conditions in consideration of the size of the heater and the grade of the power. The lead terminal 212 is connected by welding or the like so that the heating wire 202 is not directly exposed to the outside of the pipe heater 20, and one side of the lead terminal 212 is provided with an insulator 214 made of hard magnetic material or the like. . The insulator 214 prevents electric shock by preventing the insulation strength from deteriorating when the surface is wet, especially when salt or dust is attached. In addition, one side of the insulator 214 is provided with a power connection terminal 216 is connected to the power cable 432 passed through the inside of the cable gland 430 to be described later.

The pipe heater 20 configured as described above is installed by the bracket 22 on the upper side of the fixed frame 10.

Next, the heater case 30 according to the present invention will be described.

The heater case 30 is assembled to the upper surface of the fixed frame 10 so that the terminal portion 210 of the pipe heater 20 is exposed. The heater case 30 covers the pipe heater 20 so that a user or an external object is exposed to the pipe heater ( 20) It protects against direct contact. The heater case 30 has a plurality of air inlet holes 310 are formed on the bottom surface, and a plurality of air outlet holes 320 are formed on the top surface. Accordingly, the cold air in the room introduced into the air inlet 310 is heated by the heat emitted from the pipe heater 20, and the warm air formed in the process expands and continues to rise by the natural convection phenomenon. It is discharged to the room through the outlet hole 320 to naturally increase the temperature of the room. In addition, the upper surface of the heater case 30 is formed to be inclined so that an object or the like is not raised to prevent a fire.

Next, the control box 40 according to the present invention will be described.

The control box 40 is installed detachably on the other side of the upper surface of the fixed frame 10 to be spaced apart from the heater case 30, is connected to the terminal portion 210 of the pipe heater 20 to supply power To control the driving of the pipe heater 20.

The control box 40 is composed of a body 402 of a fire resistant, non-flammable synthetic resin material, a lid 404, and a locker 406 for coupling the body 402 and the lid 404.

5 is a view illustrating a state in which the lid 404 of the control box 40 according to the present invention is turned upside down. As shown in Figure 5, the outer circumferential surface of the lid 404 in contact with the body 402 is used a waterproof box equipped with a rubber packing 408. Accordingly, when the body 402 and the lid 404 are screwed together by the locker 406, the rubber packing 408 is tightly attached to the inside and the outside of the body 404 and the lid 404, so that the assembly is securely performed. It will also increase the waterproofness.

The control box 40 sets the operating temperature of the pipe heater 20, and detects the room temperature to detect whether or not the predetermined temperature or more, the bimetal switch 410 for controlling the driving of the pipe heater 20 And a signal lamp 420 indicating a driving state of the pipe heater 20 and a cable gland 430 through which a power cable 432 for supplying power to the pipe heater 20 passes.

The bimetal switch 410 is connected to the power cable 432 of the cable gland 430 to detect whether the room temperature is higher than a predetermined temperature to cut off the power supplied to the pipe heater 20, the pipe When the temperature of the heater 20 is sensed and the temperature is higher than the set temperature (eg, 115 ° C. or more), the power supplied to the pipe heater 20 is cut off.

The bimetal switch 410 includes a heater internal temperature detector 412 installed adjacent to the pipe heater 20, an external temperature detector 414 for detecting a room temperature, and a level controller 416 for setting a temperature. Is provided.

6 is a view showing only the level adjusting unit 416 of the bimetal switch 410 according to the present invention. As shown in FIG. 6, the level adjusting part 416 is fixedly coupled to the upper surface of the control box by the screw 416b, and the level adjusting body 416a penetrates through the center of the level adjusting body 416a. The rotating shaft 416c is configured to fit in the inner insertion groove (not shown) of the level adjustment lid 416d. The level adjusting unit 416 configured as described above is conventionally disposed between the rotation shaft 416c and the control box in order to solve a problem in which a short circuit occurs due to weak leakage due to the rotation shaft 416c being coupled through the control box. Equipped with a rubber packing (416e) to seal the is to increase the waterproof.

The signal lamp 420 is turned on when the pipe heater 20 operates, and is preferably installed at the top of the control box 40 so that the user can easily recognize all the power states.

The cable gland 430 is installed on the rear surface of the control box 40 has the advantage that the wiring can be conveniently mounted at any position of the vessel. In addition, the conventional cable gland 430 was made of plastic or iron, so that the unit price was expensive. In this embodiment, the cable gland 430 is made of rubber to reduce cost and work efficiency.

As described above, according to the present invention, since the pipe heater 20 and the control box 40 are formed by being separated by the heater case 30, high-temperature heat transmitted from the pipe heater 20 is various electronic components in the control box 40. It is not delivered directly to reduce the failure, in case of failure there is a convenience that can be used to replace the control box 40 separately. In addition, the bimetal switch 410 is not interfered by the heat transmitted from the pipe heater 20 has an advantage that can be more precise temperature control.

On the other hand, the marine waterproof electric heater according to another preferred embodiment of the present invention is further provided with a reflecting plate 50 to dissipate the radiant heat of the pipe heater 20. The reflective plate 50 is mounted on the upper surface of the fixed frame 10 and the inner surface of the heater case 30, respectively, to more efficiently reflect the high-temperature radiant heat emitted by the pipe heater 20, In addition, the heat transfer to the heater case 30 is cut off, thereby preventing the user from having the hand touch the heater case 30.

On the other hand, the waterproof electric heater for ship according to the present invention is further provided with the following insulation member 60 to increase the insulation in consideration of special conditions installed in the vessel.

Referring to FIG. 2, the insulating member 60 fixes the pipe heater 20 to the upper surface of the reflecting plate 50 by the bracket 22. In this case, the coupling portion of the reflecting plate 50 and the bracket 22 is fixed. There is a pair of silicone rubber packings. Therefore, the double insulation is achieved by fixing the insulating member 60 up and down based on the reflecting plate 50. Therefore, the electric safety accidents such as electric shocks are prevented by preventing the binding portion of the bracket 22 supporting the reflector 50 and the pipe heater 20 from being opened or loosened even in the event of severe impact or shaking of the vessel during the use of the electric heater. It eliminates the fear of maximizing safety.

Hereinafter, the operation of the marine waterproof electric heater according to the present invention configured as described above.

When power is supplied by the pipe heater 20, the heat generated from the pipe heater 20 warms the air in the space formed by the fixed frame 10 and the heater case 30, and heats forward by the reflector 50. The air warmed to emit the air continues to warm the entire room through the air inlet hole 310 and the air outlet hole 320 of the heater case 30. At this time, the amount of heat generated by the pipe heater 20 may be adjusted by the bimetal switch 410 for controlling the room temperature.

The bimetal switch 410 is a pipe heater 20 when the temperature inside the electric heater rises to a predetermined value, for example, 115 ° C. or more when the pipe heater 20 receives power and generates heat, so that the risk of electric accident occurs. It cuts off the power supply and prevents the temperature increase of the electric heater to increase the electrical stability.

The waterproof electric heater for ships according to the present invention operating as described above is provided with an insulating member 60 of double silicone rubber packing at a portion where the reflecting plate 50 and the bracket 22 are bound, and the pipe heater 20. And the control box 40 is coupled to the insulator 214 made of a material such as porcelain is provided to increase the insulation effect of the pipe heater 20.

In addition, the bimetal switch 410 is also equipped with a rubber packing (416e) and the control box 40 to form a waterproof box to maximize the waterproof effect.

In addition, when the pipe heater 20 and the control box 40 are separately configured and maintenance of the control box 40 is required, only the control box 40 is removed while the electric heater is fixed to the wall to replace parts or wiring. This makes it easy to maintain.

The present invention has been described with reference to specific embodiments of the present invention, but it is apparent that various modifications and changes can be made as described above without departing from the technical spirit described in the claims of the present invention. Accordingly, the detailed description of the invention and the accompanying drawings should not be construed as limiting the technical spirit of the present invention but as merely illustrative.

According to the present invention, the pipe heater and the control box are separately configured to block heat dissipation from the heater to prevent failure of various control devices, and when maintenance of the control box is required, the electric heater is mounted on the wall. It is effective to provide a water-proof electric heater for ships that can be easily replaced by replacing parts or wiring by removing only the control box in a fixed state.

In addition, according to the present invention, by applying a watertight box as a control box due to the nature of a vessel exposed to moisture or moisture, the fire and non-flammable materials may also be selected in the material to enhance its safety and waterproof properties.

In addition, according to the present invention, the insulator is provided at a portion where the pipe heater and the control box are bound to prevent the electric shock from being deteriorated when the surface is moist or especially when salt or dust is attached. .

In addition, according to the present invention by processing the cable gland on the back of the control box to be able to easily install and change the electric heater according to the installation environment.

In addition, according to the present invention by fixing the reflector and the pipe heater in Shanghai by the insulating member to prevent the binding portion of the bracket for supporting the reflector and the pipe heater in the process of using the electric heater during the impact or shaking of the vessel to open or loose. Therefore, there is an effect of maximizing safety by eliminating the risk of electric safety accidents such as electric shock.

Claims (9)

A fixing frame having a fixing piece having a fixing hole to penetrate the fixing member for fixing to the bottom or wall of the ship; A pipe heater installed by a bracket on an upper surface side of the fixed frame; A heater case assembled on an upper surface of the fixed frame to expose the terminal part of the pipe heater, and having a plurality of air inlet holes and air outlet holes formed up and down; And And a control box installed on the other side of the upper surface of the fixed frame to be spaced apart from the heater case, and connected to the terminal part of the pipe heater to control the driving of the pipe heater by controlling the power supply. Waterproofing electric heater for ships, characterized in that the heat transfer from the pipe heater by the heater case to block the transmission to the control box. The method of claim 1, wherein the pipe heater, The heating wire is embedded in the metal protective tube formed inside of the hollow structure, and the terminal part is formed to protrude to one side in a sealed state with magnesium oxide (MgO), which is an insulation material, and is discharged to the outer peripheral surface of the metal protective tube. Waterproof electric heater for ships, characterized in that a plurality of heat radiation fins are formed to be. The method according to claim 1 or 2, And a pair of reflecting plates on the upper surface of the fixing frame and the inner surface of the heater case to reflect the high-temperature radiant heat emitted by the pipe heater to block heat transfer to the heater case. Marine waterproof electric heaters. The method of claim 3, wherein Water resistance type electric heater for ship, characterized in that the insulating member further provided between the bracket for fixing the pipe heater and the reflecting plate coupled to the upper surface of the fixed frame. The method of claim 1, wherein the control box, A water-proof electric heater for a ship, comprising a rectangular body and a lid, and a locker for coupling the body and the lid to each other, wherein the waterproof box is equipped with a rubber packing along the outer circumferential surface of the lid connected to the body. The method of claim 5, wherein the control box, A bimetal switch configured to set an operating temperature of the pipe heater, detect an indoor temperature, and detect whether the pipe heater is above a preset temperature to control driving of the pipe heater; A signal lamp indicating a driving state of the pipe heater; And And a cable grand through which a power cable for supplying power to the pipe heater passes. The method of claim 6, wherein the cable gland, Waterproof electric heater for a ship, characterized in that installed on the back of the control box. The method of claim 6, wherein the bimetal switch, An internal temperature sensing unit installed adjacent to the pipe heater to sense an internal temperature of the electric heater; An external temperature sensor installed at an upper surface of the control box to sense an indoor temperature; And Water level electric heater for a ship comprising: a level control unit is installed on the upper surface of the control box to set the temperature. The method of claim 8, wherein the level control unit, A level adjusting body fixedly coupled to an upper surface of the control box by screws; A level adjusting lid coupled to the level adjusting body; And And a rotating shaft penetrating through the control box to the center of the level adjusting body and fitted into an inner insertion groove of the level adjusting lid. Waterproof electric heater for a ship, characterized in that the sealing between the rotary shaft and the control box by rubber packing.

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