KR200424212Y1 - Electric heat line of hot water pipe laminated with heat medium absorption layer - Google Patents

Abstract

The present invention relates to a heating wire in which the heat medium absorbing layer of the heating hot water pipe is laminated.

In the heating wire of the heating hot water pipe, a heat medium absorbing layer made of a material that absorbs the liquid heat medium by capillary action is laminated on the surface of the insulating material of the heating wire, and filled in the hot water pipe due to the curvature of the hot water pipe constructed for heating or the bending of the heating wire. Even if the heating wire is partially exposed out of the heating medium level, the heating medium is always absorbed and maintained in the heating medium absorbing layer of the exposed heating wire. It is to improve the safety, convenience and utility of the hot water pipe without fear of deterioration or disconnection of the heating wire.

Heated hot water pipe, liquid heat medium, heating wire, insulation material, heat medium absorption layer.

Description

ELECTRIC HEAT LINE OF HOT WATER PIPE LAMINATED WITH HEAT MEDIUM ABSORPTION LAYER}

Figure 1 is an illustration of the implementation of the heating piping of a typical electrothermal hot water pipe

Figure 2 is an exemplary cross-sectional view showing a state of the heating wire inserted in the conventional heat transfer hot water pipes

Figure 3 is an exemplary view showing a configuration of a heating wire in which a heat medium absorption layer is laminated by cutting a part of the heat transfer hot water pipe of the present invention.

4 is an explanatory view of the action of the heating element absorbing layer of the present invention under the same conditions as in FIG.

Figure 5 is an explanatory view of the action of the heating wire in the coil tube of the present invention built in the heating tank

[Explanation of Significant Codes in Drawing]

DESCRIPTION OF SYMBOLS 1 Hot water pipe 2 Heating wire 2a Insulation material 3 Heat medium absorption layer

p: hot water pipe q: heat medium T: hot water tank C: heat transfer coil C ': heating coil pipe

It is related with the heating wire in which the heat medium absorption layer of the heat-transfer hot water pipe was laminated | stacked.

It is known that a heating wire is inserted into the entire length of a hot water pipe without the configuration of a conventional boiler, and the liquid heating medium is filled and sealed, followed by heating and heating the heating medium by electric energy supplied to the heating wire.

As an example of the prior art which is heated by a hot water pipe in which a heating wire is embedded, there is a heating method and a device of Patent Application Publication No. 0180211 patented by the inventor. The present invention is different from the conventional heating of the hot water by the normal nichrome wire to circulate the hot water pipes, inserting the heating wire of the copper wire to the full length of the hot water pipes to heat the liquid heat medium such as water filled in the hot water pipes At this time, since the heating temperature of copper wire is only 50 ℃ or less, there is no danger of overheating. In the initial stage of heating of a hot water pipe by multiple strands of heating wire, it is heated at a relatively high temperature of about 80 ℃ for a short time, and then heating temperature When it reaches, the power is automatically supplied to only one strand of heating wire by the operation of the temperature sensor to keep the hot water pipe heated to the heating temperature. Therefore, there is an advantage that the stability and convenience is very high compared to other electrothermal heating.

On the other hand, as shown in Figure 1, when the hot water pipe (p) in which the heating wire (h) and the heat medium (q) is embedded in a zigzag, as shown in Figure 2, the hot water pipe (p) is filled with the heat medium (q) Since some air remains inside the hot water pipe even if it is filled, a space a is formed in the inside of the hot water pipe p horizontally piped, which is larger or smaller on the upper side of the water level w of the flatly laid liquid heat medium. . Therefore, a part of the curved heating wire (h) is exposed to the upper part of the water level (w) of the liquid heat medium (q) (A part of the hot water pipe), and the hot water pipe (p) is constructed to be curved upward along the bottom ( B portion of the hot water pipe) As the depth of the heat medium in the portion decreases, the heating wire h may be exposed outside the water level w of the heat medium q.

This state is not found from the outside, but when the power is supplied to the heating wire to generate heat, in the part where the heating wire (h) is deposited on the heat medium (q), the heat released is radiated and heated outside the hot water pipe through the heat medium. In portions A and B of FIG. 2, even though heat is emitted from the heating wire h exposed to the space portion a, the heat conductivity in the space portion a is lower than that of the heat medium, and thus the heat is not properly released to the outside. There was a risk that the service life would be shortened and disconnected due to deterioration of the heating wire as the temperature was locally increased due to heat storage inside the pipe.

If the heating wire is broken, it is necessary to break up the cement on the floor and remove all the hot water pipes of several tens of meters and replace them with new ones. There was a great issue of becoming.

Unlike the theory, the straightening of the heating wire inserted into the hot water pipe is almost impossible, and it is not easy to exhaust the air completely, and if the heat medium is filled without space inside the hot water pipe, the hot water pipe may be ruptured by the expansion force of the heated heat medium. There is a problem.

 Therefore, a space portion is inevitably formed inside the hot water pipe, and the problem of deterioration or disconnection of the heating wire partially exposed to the space portion is a serious problem to be solved in the field of this technology.

The purpose of the present invention is to solve the above-mentioned problems, in the heating wire of the heating hot water pipe, the heat medium absorbing layer made of a material that absorbs and maintains the liquid heat medium on the surface of the insulating material coated on the heating wire in the hot water pipe The heating medium is always absorbed and maintained by the heating wire exposed to the outer space of the heating medium, and the heating medium of the heating tube is laminated with a new heating medium absorbing layer that can prevent the heating wire from deteriorating and maintain the heat dissipation function of the heating water pipe. have.

The present invention is a heating wire for heating the liquid heat medium filled in the hot water pipe is embedded in the heat transfer hot water pipe, the heat medium absorbing layer is made of a material that absorbs and maintains the liquid heat medium on the surface of the insulating material coated on the heating wire. .

The material of the heat absorbing layer of the heat medium in the present invention is a fiber yarn woven from a plurality of fibers, cotton fabrics, brushed fabrics, non-woven fabrics, organic materials such as electrostatically cultivated fiber, porous synthetic resin or volcanic stone powder, diatomaceous earth All materials having a capillary function, such as porous inorganic materials, such as vermiculite powder, are used.

The means for laminating the heat medium absorbent layer on the surface of the heat insulating wire may adopt a method of adhering or dispersing the heat medium absorbent material to the heat insulating wire surface.

The heating wire in which the heat medium absorbing layer of the present invention is laminated exhibits its value and utility in the organic organic coupling relationship between the heat transfer hot water pipe and the heat medium.

That is, in the case of heating by zigzag heating the hot water pipe, since most of the heating wire inserted in the hot water pipe is immersed in the heat medium, the heat emitted from the heating wire according to the power supply radiates heat to the hot water pipe through the heat medium. The heating wire partially exposed outside the heat medium level inside the hot water pipe is always absorbed and retained by the heat medium absorbing layer. Therefore, the heat medium absorbed by the heating medium absorbing layer by the heating of the heating wire continues to evaporate. While being absorbed. The evaporated heat medium is brought into contact with the inner wall of the hot water pipe and condenses as heat is released in the heat exchanger, and then circulates downward through the inner wall of the hot water pipe, and the evaporation and condensation are repeated. Since the heat radiated at the time of condensation of steam is higher than the conduction heat of other liquid heat medium, the heat radiating temperature of a hot water pipe is also high. Therefore, unlike the conventional method, the thermal storage of high temperature does not occur inside the hot water pipe, and the safety of the electric heating wire is further improved without fear of deterioration or disconnection of some heating wires exposed out of the liquid heat medium level. The heat dissipation action is maintained better.

Therefore, it is possible to solve the problem of deterioration and disconnection of heating wires exposed to the outside of the heating medium level due to the bending of the heating wires in the hot water pipes remaining to be solved until now, and the stability, convenience and utility of heating by the hot water pipes Can be made higher.

As shown in Fig. 3, in the heating wire 2 inserted into the hot water heating pipe 1, the liquid heat medium q is absorbed by the capillary action on the surface of the insulating material 2a coated on the heating wire 2. The heat-absorbing layer 3 made of a material capable of being laminated can be laminated.

As the heat absorbing layer 3, organic materials such as fiber yarn, cotton fabrics, brushed paper, nonwoven fabrics, electrostatically woven fibers, and the like, and porous inorganic materials such as volcanic stone powder and diatomaceous earth vermiculite particles are used.

The means for laminating the heat medium absorbing layer on the surface of the insulating material of the heating wire can be realized by a method such as bonding the above-described material to the surface of the insulating material of the heating wire or dispersing the material.

The hot water pipe (1) filled with the heating medium (2) in which the heat medium absorbing layer (3) of the present invention is constructed so as to pass through and filled with the liquid heat medium (q) is zigzag on the indoor floor for heating as shown in FIG. Pipe and heat.

 At this time, most of the heating wire (2) is immersed in the heat medium (q), but the heating wire is bent as shown in point A of Figure 4 or the hot water pipe (1) is bent upward, as in the point B of the same where the depth of the liquid heat medium is lowered A part of the heating wire 2 is exposed outside the water level w of the heat medium, and the heat medium is absorbed by the heat medium absorbing layer 3 in this exposed portion.

 While power is supplied to the heating wire 2, the heat emitted from the heating wire 2 immersed in the heating medium q is transferred to the outside of the hot water pipe through the heating medium to radiate heat. Since the heat medium is absorbed by the capillary action of the heat medium absorbing layer 3 and forms a thin water film in the absorbing layer 3, the heat ray 2 exposed outside the water level of the heat medium q has a quantity of heat emitted from the heat wire 2. It is easily evaporated by the vaporized heat medium, and the vaporized heat medium is in contact with the inner wall of the hot water pipe 1, releasing heat by heat exchange, and condensed and condensed heat medium continues to flow along the main wall of the hot water pipe. In the evaporated portion of the heat medium, the liquid heat medium q continues to move by the capillary action of the heat medium absorbing layer 3, and the evaporation and condensation of the liquid heat medium is repeated.

In addition, the heat of condensation of the vapor evaporating from the heat medium absorbing layer 3 of the heating wire 2 exposed to the space part a of the hot water pipe is radiated to a higher temperature in the hot water pipe because the temperature is higher than that of the heat medium. There is no local high temperature heat storage inside the tube. Accordingly, the safety of the heating wire is higher and the heating action of the entire heating hot water pipe is maintained without any fear of shortening of the life due to deterioration of the heating wire or disconnection, thereby increasing convenience and utility of the heating hot water pipe.

(Example)

5 is a cross-sectional view of a hot water coil T and a heating coil in which a heating coil 2 in which a heating wire 2 into which a heat medium absorbing layer 3 of the present invention is stacked is inserted into a hot water tank T. The liquid heat medium (q) filled in the heat transfer hot water pipe (p) is pulled downward of the heat transfer coil pipe (C), and the coil pipe at the upper part of the heat medium level (w) forms a space part (a) in which the heat medium is empty. have. In this way, the heating wire inside the coil tube having the heat medium is heat medium absorbed by the heat medium absorbing layer 3, and the heat emitted from the heat wire 2 by the power supplied to the heat wire 2 is heated by the heat medium q. ) Is heated to supply the water introduced through the heating coil (C '). On the other hand, the heat medium absorbed in the absorbing layer 3 is evaporated by the heat emitted from the heating wire outside the water level of the heat medium (w), and the heat evaporated heat is condensed by heat exchange in the heat transfer coil tube (C). The heating medium is repeatedly absorbed by the heating medium absorbing layer (3) to repeat the evaporation and condensation action to heat the water of the hot water tank (T) and at the same time prevent the deterioration of the heating wire can be used safely.

The heating wire of the electric heating hot water pipe of the present invention has a simple structure and always has a liquid heating medium on the outside of the heating wire because the heat medium absorbing layer made of a material that absorbs the liquid heat medium filled in the hot water pipe by the capillary action is laminated on the surface of the insulating material. It is absorbed and retained by heat conduction action by heat medium, and evaporation and condensation action of heat medium, improves safety of heating wire without fear of deterioration or cutting of heating wire inserted into hot water pipe, and improves convenience and utility of hot water pipe. It can be effected.

Claims (2)

A heating wire embedded in a heating hot water pipe, wherein the heat medium absorbing layer made of a material capable of absorbing the liquid heat medium filled in the inside of the hot water pipe by capillary action is laminated on the surface of the insulating material coated on the heating wire. Heating wire in which the heat medium absorption layer of the hot water pipe is laminated. The heat transfer water pipe according to claim 1, wherein the material of the heat absorbing layer of the heat medium is one absorbent material selected from organic materials and inorganic materials such as fiber yarn, cotton fabric, brushed paper, nonwoven fabric, volcanic stone powder, diatomaceous earth, vermiculite powder, and the like. Heating wire in which the heat medium absorption layer of is laminated.

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