WO2004063633A1

WO2004063633A1 - Electric heating pipe and electric heating apparatus using it

Info

Publication number: WO2004063633A1
Application number: PCT/KR2004/000040
Authority: WO
Inventors: Hyung-Gon Kim
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-11
Filing date: 2004-01-12
Publication date: 2004-07-29
Anticipated expiration: 2005-07-11
Also published as: EP1592926A4; US20060083494A1; CN1735770B; JP4077017B2; KR100513271B1; CN1735770A; KR20040064947A; EP1592926A1; US7429720B2; JP2006517022A

Abstract

The present invention relates to an electric radiating pipe capable of enhancing a heating efficiency in such a manner that a mixture of a porous operation medium and a volatile operation fluid is filled in a radiation pipe, and a porous operation medium is fast heated based on a viscosity difference, and a densely filled operation fluid is phase-changed to a high temperature vapor or a high temperature liquid based on a heated operation medium. In a radiating pipe that includes a certain shaped pipe body, and a heat wire passing through to the interior of the pipe body wherein both ends of the pipe body are sealed by a plugging cap, there is provided an electric radiating pipe that includes a porous inflammable operation medium and volatile operation fluid being mixed and being filled into the interior of the pipe body.

Description

ELECTRIC HEATING PIPE AND ELECTRIC HEATING

APPARATUS USING IT

Technical Field

The present invention relates to an electric radiating pipe capable of

radiating heat generated in a heating wire to the outside for thereby achieving a

warming operation, and in particular to an electric radiating pipe capable of

enhancing a heating efficiency in such a manner that a mixture of a porous

operation medium and a volatile operation fluid is filled in a radiation pipe, and a

porous operation medium is fast heated based on a viscosity difference, and a

densely filled operation fluid is phase-changed to a high temperature vapor or a

high temperature liquid based on a heated operation medium. In addition, the

present invention relates to an electric radiating instrument such as an electric

boiler, an electric mat and an electric radiator capable of saving a consuming

power using a radiating pipe and decreasing a heating time.

Background Art

Generally, in order to achieve a warming operation using electric power,

there are an electric boiler installed in a floor and a portable electric mat for

thereby increasing temperature, and a radiator (radiating unit) installed in an upright shape for thereby increasing an indoor temperature.

Heating wires are installed in an electric boiler or an electric mat

wherein the heating wires are heated based on a supply of power. It is possible

to implement a warming effect using a relatively inexpensive electricity instead

of expensive oil and gas.

However, in the conventional electric boiler or electric mat, since the

heating wires are arranged in a mat based on a simple method, there are not

any additional functions except for a warming function and heat transfer function.

In addition, since the heating operation and heat keeping operation of the

heating wires are maintained only by the supply of power, the power

consumption is largely increased in order to increase temperature and keep the

increased temperature for long time.

In order to overcome the above problems, a radiating pipe filled with a

solid or liquid operation fluid in which a heating wire is installed instead of an

electric heat wire is arranged for thereby heating a regenerative liquid using

heat generated in the heating wire and increasing temperature using the heated

regenerative liquid.

However, in order to heat a regenerative liquid in the radiating pipe, it

takes a relatively long time, and an initial heating efficiency is delayed for a

certain time period. Since the entire regenerative liquid is heated, an over power is consumed.

In addition, in the case that a radiator is used, a large heat loss occurs

while vapor or hot water are supplied from a vapor boiler or hot water boiler

using oil or gas to a certain place. In addition, the radiator is a fixed type, it is

impossible to move to a certain place.

In order to overcome the above problems, there are provided a certain

shaped radiating pipe and a radiating plate. An electric radiator using electricity

as a fuel is developed and used. In the above electric radiator, a regenerative

liquid is heated using heat generated in the heating wires. The temperature of

the radiator is increased using a heated regenerative liquid for thereby

achieving a warming operation.

However, when the temperature is increased to a certain temperature,

and the supply of electricity is stopped, the temperature is gradually and

advantageously decreased, but the initial heating efficiency is low.

Disclosure of Invention

Accordingly, it is an object of the present invention to provide a radiating

pipe filled with an operation medium and an operation fluid capable of

increasing a heating efficiency in such a manner that a mixture of a porous

operation medium and a volatile liquid is filled in a radiation pipe, and a porous operation medium is fast heated based on a viscosity difference, and a densely

filled operation fluid is phase-changed to a high temperature vapor or a high

temperature liquid.

It is another object of the present invention to provide an electric

heating instrument such as an electric boiler, an electric mat and an electric

radiator capable of saving a power consumption and decreasing a heating time

using a radiation pipe filled with a mixture of a porous operation medium and an

operation fluid.

Many effects in relation with the above objects of the present invention

will be easily understood with reference to the accompanying drawings.

To achieve the above objects, in the present invention, a volatile

operation fluid is filled into the fine holes of a regenerative operation medium in

a fine molecular structure for thereby heating the operation medium and

increasing the temperature. The filled volatile operation fluid is heated through

the operation medium, so that the phase change to vapor is achieved within a

shortest time period for thereby heating the entire portions of the radiating pipe

using the heated vapor.

To achieve the above objects, in a radiating pipe that includes a certain

shaped pipe body, and a heat wire passing through the interior of the pipe body

wherein both ends of the pipe body are sealed by a plugging cap, there is provided an electric radiating pipe comprising a porous inflammable operation

medium and volatile operation fluid being mixed and being filled into the interior

of the pipe body.

The operation medium has a size of 1~3mm and is formed in a circular

shape or an elliptical shape or a polygonal shape and is selected from the group

comprising yellow earth grains, charcoal, gravel, zeolite, porous inflammable

cotton, non-woven fabric, and rope.

To achieve the above objects, there is provided an electric mat that

includes an adiabatic member installed on the floor, a certain shaped pipe body,

a plugging cap sealing both ends of the pipe body, a radiating pipe inserted into

the pipe body and having a heat wire capable of generating heat when power is

supplied, an electric plate installed in an upper side of the radiating pipe, and a

finishing material layer installed in an upper side of the electric plate, there is

provided an electric mat comprising a porous inflammable operation medium

and a volatile operation fluid being mixed and inserted into the interior of the

radiating pipe.

To achieve the above objects, there is provided an electric radiator that

includes a radiating pipe formed of a certain shaped pipe body, a heat wire

installed in the radiating pipe and generating heat when power is supplied, and

a plurality of radiating plates installed vertically with respect to the radiating pipe and generating heat of the radiating pipe, there is provided an electric radiator,

comprising a porous inflammable operation medium and a volatile operation

fluid being mixed and inserted into the interior of the radiating pipe.

To achieve the above objects, in an electric boiler that includes a certain

shaped pipe body, a sealing cap capable of sealing both ends of the pipe body,

and a heat wire inserted into the pipe body and capable of generating heat

when power is supplied, there is provided an electric boiler comprising a porous

inflammable operation medium and a volatile operation fluid being mixed and

inserted into the interior of the radiating pipe.

Brief Description of Drawings

The present invention will become better understood with reference to

the accompanying drawings which are given only by way of illustration and thus

are not limitative of the present invention, wherein;

Figure 1 is a cross sectional view illustrating an electric radiating pipe

according to the present invention;

Figure 2 is a view illustrating an engaged state of an electric mat having

an electric radiating pipe according to the present invention;

Figure 3 is a view illustrating an engaged state of an electric boiler

having an electric pipe according to the present invention; and Figure 4 is a cross sectional view of a major part of an electric radiator

having an electric radiating pipe according to the present invention.

Best Mode for Carrying Out the Invention

The construction, operation and effects of the present invention

according to the present invention will be described with reference to the

accompanying drawings.

Figure 1 is a cross sectional view illustrating an electric radiating pipe

according to the present invention, Figure 2 is a view illustrating an engaged

state of an electric mat having an electric radiating pipe according to the present

invention, Figure 3 is a view illustrating an engaged state of an electric boiler

having an electric pipe according to the present invention, and Figure 4 is a

cross sectional view of a major part of an electric radiator having an electric

radiating pipe according to the present invention.

As shown in Figure 1 , a radiation pipe according to an embodiment of the

present invention includes a pipe body 2 having a certain length, a plugging cap

3 adapted to tightly cap both ends of the pipe body 2, a heat wire 5

accommodated in the interior of the pipe body 2 based on an insulation method

and heated by power supplied thereto, and a porous inflammable operation

medium 6 and a volatile operation fluid 7 surrounding the heat wires with an operation fluid 7 therein and being filled into the interior of the pipe body 2. In

addition, a bimetal 8 capable of measuring temperature and pressure in the

interior of the pipe body 2 is installed.

The pipe body 2 is formed of an excel, PPC, metal plate, etc. capable of

enduring a high temperature of over 100°C and a high pressure and having a

heat resistance and a durability and a corrosion resistant property. In particular,

the pipe body 2 is formed of a certain material capable of enduring a pressure

increased as the operation fluid 7 is changed to a certain gas state.

The plugging cap 3 is formed of a rubber, etc. The plugging cap 3 is fully

sealed so that the operation fluid 7 is not leaked even when the operation fluid 7

is heated and changed to gas. At this time, the plugging cap and the pipe body

are fully sealed using silicon, etc. The plugging cap 3 includes holes through

which the electric cables 4 and the bimetal 8 sealingly pass.

The heat wire 5 is insulated with a triple protection coat such as a silicon

coating on a conduction material such as a nichrome wire or copper wire and is

installed in the pipe body.

The operation medium is formed of one selected among a grain type

material such as yellow earth having moisture and inflammable and intensive

dense holes, charcoal, zeolite, etc. and a non-grain type material such as cotton,

non-woven fabric, compression fiber, etc. In particular, the operation medium is preferably filled in the pipe body 2 and is formed of an inflammable compression

fiber covering the heat wire 5.

When the volatile operation fluid 7 is filled in the porous operation

medium in molecular state and is heated, a phase change from a liquid state to

a gas state is performed. At this time, in the case that the density of the

operation medium is significantly increased, the weight of the radiating pipe is

increased. In the case that the density of the operation medium is decreased,

the time required for the phase change of the volatile operation fluid is extended.

The operation medium 7 is formed of a volatile liquid such as water, salt

water, a mixture of water of acetic acid soda. The operation medium 7 may be

selectively used based on the volume of holes volume for storing air in the

operation medium) of the operation medium. Namely, in the case that the

volume of holes is 0, the operation fluid 7 is not impregnated. In the case that

the volume of holes is 100%, the operation fluid 7 is fully impregnated into the

fibers. When the operation fluid is impregnated below 20% with respect to the

volume of holes, it is possible to heat the radiating pipe to the temperature

proper for the use of the mat or boiler using a small amount of operation fluid.

When the operation fluid is used over 80% with respect to the volume of holes,

since the heated operation fluid is not easy to vaporize, more heating time and

power consumption are needed. When power is supplied to the heat wire of the radiating pipe 1 , heat is

generated in the heat wire 5, and the operation medium 6 and the operation

fluid 7 are heated. The operation medium having a fast temperature increase

property in a solid state heats its surface and the moisture contained on the

surface and the interior of the same. Therefore, the moisture is vaporized or

heated to a high temperature liquid, so that the entire radiating pipe 1 is

uniformly and fast heated.

Namely, the operation medium 6 is formed heated by heat generated by

the heat wire 5, and moisture contained therein is second heated and is

changed to hot vapor or high temperature liquid. The vaporized vapor or high

temperature liquid is uniformly transferred to the inner cross sectional areas of

the radiating pipe 1 as wetting heat and is conducted to the entire portions for

thereby achieving uniform radiation. In addition, the heated and vaporized vapor

contacts with the inner cross sectional areas of the pipe body and performs a

heat exchange and is frozen and condensed as liquid. The condensed water

drop is absorbed through the surface of the operation medium 6 based on their

gravity and surface tension and is reheated. The water is repeatedly processed

through vaporization, condensation and absorption.

The bimetal 8 is installed in the interior of the pipe body 2 through the

plugging cap 3. The power supplied to the heat wire 5 is disconnected by measuring temperature and atmospheric pressure of the inner side of the pipe

body 2. Namely, the bimetal 8 measures the temperature and pressure (in

particular, atmospheric pressure) of the operation medium 7 changed from

liquid phase to gas phase, so that the power is automatically disconnected.

Therefore, it is possible to prevent the operation fluid 7 affecting the pipe body 2

from affecting the pipe body 2 or the plugging cap 3.

The radiation pipe includes a temperature detector 9 for measuring an

outer temperature in the outside of the pipe body 2 for thereby being used as a

radiator, and a temperature adjusting unit 10 connected with the bimetal 8 and

the temperature detector 9 for thereby controlling the power.

The temperature detector 9 is installed outside the pipe body and is

connected with the temperature adjusting unit 10 capable of controlling the

temperature of the radiating pipe.

The temperature adjusting unit 10 includes a power plug connected with

an external power supply source (not shown), and an electric cable 4 extended

to the pipe body 2 and connected with the heat wire 5 through the holes of the

plugging cap.

The heating efficiency changed when the operation fluid is mixed with the

operation medium at a certain ratio will be described based on the following

embodiments of the present invention. [Embodiment 1]

In the radiating pipe, a heat wire passes through the interior of the pipe

body formed of a material X-L and having a diameter of 15mm and a height of

1m. The yellow earth formed of grains of 1~3mm used as an operation medium

(solid) and water used as the operation fluid (liquid) are filled into the pipe body

at a certain ratio. In a state that the temperature of the experimental room is

maintained at 12~13°C, the operation medium and operation fluid are mixed at

different ratio and are heated by the same level of electric power and for the

same time period. The temperatures of the operation medium and operation

fluid are measured using a digital thermometer at every 1 minute for one hour,

and a result of the measurement is shown in the following Table. At this time,

the state of solid + fluid represents a state that liquid is added by the amount

indicated in the remark of the table in a state that solid is fully filled.

[Table 1]

As shown in the above table 1 , in the case that only the operation fluid

is filled, the temperature of the radiating pipe is more gradually increased as

compared to when only the operation fluid is filled. Therefore, it is known that

the operation medium has better heating efficiency. In the case that a small

amount of the operation fluid is filled into the radiating pipe filled with the

operation medium, the heating efficiency is significantly higher as compared to

when only the operation medium is filled.

In addition, when the operation fluid is filled by 40~45ml, it is possible to

achieve a state that moisture does not form water drop on the surface of the

operation medium. In the case that over operation fluid is filled, the amount of

the operation medium gets excessive, so that the moisture forms water drop

and flows in the interior of the radiating pipe. The above result was obtained

based on a result of the experiment. Here, the amount of the operation fluid is

not limited thereto.

[Embodiment 2]

The pipe body filled with the operation medium (solid) and the operation

fluid (liquid) used in the first embodiment of the present invention are heated for

one hour, and the supply of the power is disconnected. The dropping of the temperature of the radiating pipe is checked at every 5 minutes, and the

temperatures of the radiating pipe under the same condition are shown in the

flowing table 2.

[Table 2]

As shown in the above table 2, in the case that only the operation fluid

is filled, it is known that the speed that the temperature is dropped is slower as

compared to when only the operation medium is filled. Therefore, the operation

that only the operation fluid is filled is more effective for keeping the heating for

a long time as compared to when only the operation medium is filled.

In addition, the operation medium and operation fluid are filled into the

radiating pipe at different ratios, and the temperatures are measured. As a

result of the measurement, the operation that the operation medium and

operation fluid are filled into the radiating pipe by a certain proper amount has a

desired heating keeping effect as compared to when only the operation medium is filled.

Therefore, as an analysis of the tables 1 and 2, when the operation

medium and operation fluid are filled into the radiating pipe at a certain proper

ratio has an enhanced heating efficiency as compared to when either operation

medium or operation fluid is filled into the radiating pipe.

However, when the operation medium and the operation fluid are mixed

and filled into the radiating pipe, if the operation fluid is mixed with the operation

medium by the amount of over 40~45ml, namely, in a state that the operation

fluid does not flow down on the surface of the operation medium, the operation

fluid is gathered in the lower side of the radiating pipe. Therefore, the

temperature lower than the temperature of the radiating pipe is

disadvantageously obtained. Therefore, it is preferred that the operation

medium and operation fluid are mixed and filled into the radiating pipe in such a

manner that the operation fluid does not flow on the surface of the operation

medium.

[Embodiment 3]

Five pipe bodies formed of an excel pipe of a diameter of 15mm and a

height of 10m are arranged in a zigzag shape at a room temperature of 7~8°C.

In addition, a nichrome heat wire having 20W/H for every 1m is arranged in two rows by a length of 10m for each turn in the interior of the pipe body. The

operation fluid formed of water and acetic acid soda is impregnated into a

polyester compressed cotton operating as an operation medium having a

volume of 600cm³ and a weight of 20g based on a 15volume% (height of 1.5m

of pipe body of 10m), 22volume% (height of 2.2mm of pipe body of 10m), and

29volume% (height of 2.9mm of pipe body of 10m), respectively, with respect to

the internal volume of the pipe body. A digital thermometer is inserted between

the third and fourth radiating pipes. The average temperatures are checked by a

few times after 30 minutes, and a result of the measurement is shown in the

following table 3.

[Table 3]

[Comparison 1]

The same heat wire is inserted into the same pipe body as the pipe

body of the embodiment 3 of the present invention. In a state that an

inflammable fiber is not inserted, only the operation fluid is filled 100%, and a

digital thermometer is inserted between the third and fourth radiating pipes. The average temperature is measured a few times after 30 minutes.

As a result of the measurement, about 30 minutes after the supply of

the power, the temperature is increased to 37~39°C.

As described above in the first and third embodiments of the present

invention, the radiating pipe according to the present invention can be heated to

a high temperature within a short time period as compared to the conventional

radiating pipe filled with a common liquid operation fluid, so that it is possible to

decrease the power consumption needed for achieving a desired temperature

for the heating operation.

The electric mat according to the present invention will be described

with reference to Figure 2.

As shown therein, in the electric mat 11 of the present invention, an

adiabatic member 12 having an adiabatic property such as polyurethane is

formed on the floor with a certain thickness, and a hose accommodating part 13

is formed in a zigzag shape on the adiabatic member 12 for installing the

radiating pipe 1.

The radiating pipe 1 having the same shape as the hose

accommodating part 13 is arranged in the hose accommodating part 13 formed

in the adiabatic member 12, and an electric plate 14 is installed in the upper

side of the radiating pipe 1. At this time, the electric plate 14 is formed of a metallic plate having an excellent heat conduction property.

The electric mat 11 is finished with the mat layer 15 on the upper side of

the electric plate 14.

The temperature detector 9 adapted to detect the temperature is

installed outside the radiating pipe 1 or in the electric plate 14, and the

temperature detector 9 is connected with the temperature adjusting unit 10

capable of adjusting the radiating degree of the radiating pipe 1.

The electric boiler installed in a Korean under-floor heating room

according to another embodiment of the present invention.

As shown therein, in the electric boiler 21, a. straight line shaped or

curve shaped hose accommodating part (not shown) is installed in a zigzag

shape on the floor of the Korean under-floor heating room 22, and the radiating

pipe 1 is accommodated based on the type of the hose accommodating part.

Thereafter, the electric plate 23 is installed on the upper side of the

radiating pipe 1 for transferring heat generated in the radiating pipe. A

decoration material 24 and a finishing material 25 are installed on the upper

side of the electric plate 23, so that a Korean under-floor heating room having

the electric boiler 21 is finished. At this time, the temperature detector 9 is

installed in the electric plate 23 that is provided outside the radiating pipe for

thereby detecting the temperature of the electric plate 23. The temperature adjusting unit 10 is installed in one side of the wall

surface and is adapted to adjust the power supplied to the electric cable.

The electric radiator having a radiating pipe according to another

embodiment of the present invention will be described with reference to Figure

4.

In the electric radiator 30 according to the present invention, a heat wire

5 is provided and generates heat when electric power is supplied to the

radiating pipe 32 having the same construction as a common conventional

radiator. A plurality of radiating plates 33 capable of radiating heat of the

radiating pipe 32 are installed vertically with respect to the radiating pipe 32. A

circulation path 34 is formed in the radiating plate 33 for circulating a high

temperature gas or a high temperature liquid.

In the radiating pipe 1 installed in the electric mat 11 or the electric

boiler 21 or the electric radiator 31 as shown in Figures 2 through 4, when the

power is supplied to the heat wire 5 installed in the pipe body 2 as shown in

Figure 1, the operation medium 6 surrounding the heat is heated, and the

temperature is increased as the heat wire 5 generates heat. As the temperature

of the operation medium is increased, the phase is changed from a liquid state

to a gas state. The wetting heat is uniformly spread to the inner cross section

areas of the radiating pipe 1 , so that a heat radiating is uniformly performed for thereby achieving a desired heating function.

The heated and vaporized vapor performs a heat exchange, while

contacting with the inner cross section areas of the pipe body of the radiating

pipe 1 , and is frozen to a low temperature liquid and is condensed. The

condensed water drop is absorbed through the contacting surface of the

operation medium based on a gravity operation and surface tension and is

reheated. The process of the vaporization, condensation and absorption is

repeatedly performed for thereby achieving a heating operation.

As the operation fluid 7 is vaporized, the temperature and pressure of

the pipe body 2 are measured by a bimetal 8. In the case that the measured

temperature and pressure exceed the set temperature and pressure, the power

supplied to the heat wire 5 is automatically disconnected.

As described above, the radiating pipe filled with the operation medium

and operation fluid according to the present invention generates as electric

power may be well adapted to all kinds of heating instruments capable of

generating heat and achieving a heating function as electric power is supplied

for thereby enhancing a heating efficiency. The present invention is not limited

to the above description. The present invention may be adapted to all

instruments using electric power.

In addition, the ratios of the operation fluid with respect to the operation medium filled into the radiating pipe may be variously changed based on the

size of the radiating pipe and the moisture absorption ratio of the operation

medium. The operations that a proper ratio is set; and the operation fluid is

mixed with the operation medium based on the set ration are included within the

range of the present invention.

Industrial Applicability

As described above, in the present invention, in the radiating pipe for an

electric boiler according to the present invention, the operation medium and the

operation fluid are mixed and filled into the radiating pipe at a proper ratio, so

that the heat generated in the heat wire fast increases the temperature of the

operation medium, and the heat of the operation medium is transferred to the

operation fluid. Therefore, the operation fluid is fast vaporized to a high

temperature vapor within a short time period, so that the entire portions of the

radiating pipe are uniformly heated for thereby enhancing a heating efficiency.

In addition, since the porous operation medium is used, the process

that the vaporization or condensation of the operation fluid is easily repeated

based on the holes formed in the operation medium.

Furthermore, the amount of the operation fluid is decreased using a

porous compressed fiber adapted as the operation medium in the radiating pipe, so that the weight of the electric may is significantly decreased.

The present invention is not limited to the above embodiment. As the

present invention may be embodied in several forms without departing from the

spirit or essential characteristics thereof, it should also be understood that the

above-described examples are not limited by any of the details of the foregoing

description, unless otherwise specified, but rather should be construed broadly

within its spirit and scope as defined in the appended claims, and therefore all

changes and modifications that fall within the meets and bounds of the claims,

or equivalences of such meets and bounds are therefore intended to be

embraced by the appended claims.

Claims

Claims:

1. A radiating pipe that includes a certain shaped pipe body, and a heat

wire passing through the interior of the pipe body wherein both ends of the pipe

body are sealed by a plugging cap, an electric radiating pipe, comprising:

a porous inflammable operation medium and volatile operation fluid

being mixed and being filled into the interior of the pipe body.

2. The pipe of claim 1, wherein said operation medium has a size of

1 ~3mm and is formed in a circular shape or an elliptical shape or a polygonal

shape.

3. The pipe of claim 2, wherein said operation medium is selected from the

group comprising yellow earth grains, charcoal, gravel, and zeolite.

4. The pipe of claim 1 , wherein said operation medium is selected from an

inflammable fabric group such as porous cotton, non-woven fabric, cotton, rope,

etc.

5. The pipe of claim 4, wherein said operation fluid has 20~80% air

volume ratio with respect to the air volume of the operation medium.

6. An electric mat that includes an adiabatic member installed on the floor,

a certain shaped pipe body, a plugging cap sealing both ends of the pipe body,

a radiating pipe inserted into the pipe body and having a heat wire capable of

generating heat when power is supplied, an electric plate installed in an upper

side of the radiating pipe, and a finishing material layer installed in an upper

side of the electric plate, an electric mat, comprising:

a porous inflammable operation medium and a volatile operation fluid

being mixed and inserted into the interior of the radiating pipe.

7. The mat of claim 6, wherein said operation medium is selected from the

group comprising yellow earth grains, charcoal, gravel, zeolite, porous cotton,

non-woven fabric, cotton and rope.

8. An electric radiator that includes a radiating pipe formed of a certain

.shaped pipe body, a heat wire installed in the radiating pipe and generating heat

when power is supplied, and a plurality of radiating plates installed vertically

with respect to the radiating pipe and generating heat of the radiating pipe, an

electric radiator, comprising:

a porous inflammable operation medium and a volatile operation fluid being mixed and inserted into the interior of the radiating pipe.

9. The radiator of claim 8, wherein said operation medium is selected from

the group comprising yellow earth grains, charcoal, gravel, zeolite, porous

cotton, non-woven fabric, cotton and rope.