KR20040110776A - Electric boiler - Google Patents

Abstract

PURPOSE: An electric boiler is provided to operate a boiler with low electricity and high efficiency by heating a heat transfer medium using the heat generated from a planar heating element. CONSTITUTION: An electric boiler comprises a heating unit(10) composed of an inner container(11) having a first heat transfer medium passage(13), an outer container(12) surrounding the inner container to form a second heat transfer medium passage(15) and a plane heater(19) for generating thermal energy, a heat emission unit(30) connected with the first and second heat transfer medium passages to circulate a heat transfer medium, a pump(50) for circulating the heat transfer medium through the heating unit and the heat emission unit, and a controller(60) for controlling the power applied to the planar heating element.

Description

Electric Boiler {ELECTRIC BOILER}

The present invention relates to an electric boiler, and more particularly, to an electric boiler capable of operating at low power and high efficiency by heating a heat medium by heat generation of a planar heating element.

As is well known, a boiler is a device that generates heat energy using fuel and electricity such as oil and gas, and generates heating water or hot water by heat exchange between heat energy and water, depending on the energy source of oil boiler, gas boiler, It is called electric boiler.

In general, a combustion boiler that uses fuel such as oil and gas as an energy source generates heat energy by burning fuel by a burner, and generates heating water by heat-exchanging water circulating pipes by operating heat energy and a pump. . However, combustion boilers are expensive because many components are used for storing, supplying, burning, and exhausting fuel, and have a disadvantage in that productivity is greatly reduced due to a complicated structure. In addition, the combustion type boiler should be equipped with a separate boiler room that is well ventilated and separated from the heating area for the supply of air required for combustion of the burner and the prevention of gas poisoning due to leakage of exhaust gas. The length of the pipe installed between the heating zone and the heating zone is complicated, so that there is a problem that the loss of thermal energy is large, and the workability is greatly reduced. In the case of gas boilers, gas poisoning and explosion accidents caused by gas leakage cause enormous loss of life and property, and thus, it is cumbersome and inconvenient to operate such as requiring periodic inspection of burners and pipes.

On the other hand, electric boilers have the advantage of easy installation and operation compared to combustion boilers because they use electricity as an energy source, but has a problem that is unsuitable for use in the heating of a large area by the electric charges higher than the fuel cost. In addition, the electric boiler has a disadvantage in that failure occurs easily due to disconnection of the heating wire, and low energy efficiency. In order to reduce the operation cost of the electric boiler, a late-night heat storage electric boiler has been developed that operates at a late night time when the electric charge is discounted, generates and stores hot water at about 90 ° C., and uses hot water at a time required by the user. However, in the latent heat storage electric boiler, the tank for the storage of hot water has to be provided by installing a separate boiler room on the roof of the building, the basement, etc.

The present invention has been made in order to solve the various problems of the prior art as described above, an object of the present invention is to provide an electric boiler that can operate at a low power, high efficiency by heating the heat medium by the heat generation of the planar heating element. It is.

Another object of the present invention is to provide an electric boiler that can be manufactured by miniaturization and light weight by a simple configuration.

Still another object of the present invention is to provide an electric boiler which can greatly improve workability, storage and transportability by a flexible mattress.

Still another object of the present invention is to provide an electric boiler capable of simplifying piping and improving design freedom.

Features of the present invention for achieving the above object, the outer container surrounding the inner container to form an inner container having a first passage of the heat medium, and a second passage communicating with the first passage of the inner container, the outer container And a heating device consisting of a planar heating element provided to generate thermal energy by the application of power to the outer surface of the; Heat dissipation means connected to the first passage of the inner container and the second passage of the outer container to circulate the heat medium; A pump for circulating the heat medium between the heat generating device and the heat radiating means; The electric boiler which consists of a controller which controls the power applied to the surface heating element of a heat generating apparatus.

In addition, the heat generating device, the pump and the controller are provided in a built-in case, the heat dissipation means is made of a mattress having flexibility in which a zigzag passage of the heat medium is formed.

1 is a piping diagram showing the configuration of an electric boiler according to the present invention,

2 is a perspective view showing the configuration of a heating device according to the present invention;

3 is a cross-sectional view showing a configuration in which the heat generating devices of FIG. 2 are arranged in parallel;

4 is a cross-sectional view showing another example of a heating device according to the present invention;

5 is a cross-sectional view taken along the line V-V of FIG.

6 is a cross-sectional view showing another example of a heating device according to the present invention;

7 is a cross-sectional view showing the configuration of a heat radiation device according to the present invention;

8 is a cross-sectional view showing another example of a heat dissipation device according to the present invention;

9 is a front view showing a state in which the heating device, the pump, the controller according to the present invention is built in the case,

10 is a cross-sectional view showing a configuration in which another example of the heat generating apparatus according to the present invention is arranged in parallel.

♣ Explanation of symbols for the main parts of the drawing ♣

10, 10 ', 110, 110': Heat generating device 11, 111: inner container

12, 112: outer container 13, 113: first passage

14: introduction port 15, 114: second passage

16, 115: hole 19: planar heating element

20: electrode 22: partition wall

23: hole 25: spiral projection

30: heat sink 31: mattress

32: heat dissipation pipe 33: passage

34: cover 36: mattress

37: first sheet 38: second sheet

39: passage 40: pipeline

41: first connection pipe 42: second connection pipe

50: pump 60: controller

64: current controller 70: case

80: water supply pipe 81: water supply tank

90: hot water tank 93: hot water discharge pipe

120: upper cap 130: lower cap

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

First, referring to FIGS. 1 to 3 and 9, the electric boiler of the present invention includes a heating device 10. It consists of the elongate hollow-cylindrical cylindrical inner container 11 of the heat generating apparatus 10, and the hollow-cylindrical cylindrical outer container 12 surrounding this inner container 11. As shown in FIG. The inner container 11 and the outer container 12 maintain the flow of the heat medium such as water, brine, oil, gas, etc. by the double passage structure. The outer container 12 of this embodiment is designed about 5 cm in diameter and 28 cm in length.

The first passage 13 of the inner container 11 is in communication with the upper inlet 14 for introducing the heat medium, and the lower portion of the inner container 11 between the inner container 11 and the outer container 12. A hole 16 is formed so that the second passage 15 and the first passage 13 communicate with each other. An outlet 17 communicating with the second passage 15 is formed at an upper portion of the outer container 12. The inlet 14 of the inner container 11 is integrally formed at the upper portion of the outer container 12, and the inner container 11 and the outer container 12 are disposed below the inner container 11 and the outer container 12. ) Is integrally connected to form a connecting portion 18 to reinforce the strength. The inner container 11 and the outer container 12 of the heat generating device 10 may be made of, for example, transparent glass and ceramic having heat resistance and low expansion characteristics.

On the other hand, the outer surface of the outer container 12 is provided with a plane heater (Plane heater: 19), the planar heating element (19) can be configured as a thin film by applying a conductive paint to the outer container 12 as a kind of resistor. On the surface of the planar heating element 19, a plurality of electrodes 20 to which power can be applied are attached at predetermined intervals, and the electrodes 20 are formed to be annular along the circumference of the outer container 12. . The electrode 20 may be made of silver. The planar heating element 19 and the electrode 20 are conductive thin films having a thickness of about 500 to 5,000 A by spraying a conductive paint on the outer surface of the outer container 12 that is preheated by using clean air as a carrier. After forming and printing the conductive thin film which becomes the electrode 20 on a conductive thin film, it can be manufactured by baking the outer container 12. An electric insulator may be applied to the surfaces of the planar heating element 19 and the electrode 20 as necessary.

As shown in FIG. 3 and FIG. 9, when the two heat generating devices 10 and 10 ′ are arranged in parallel, the outlet 17 of the heat generating device 10 is connected to the heat generating device by the connecting pipe 21. 10 ') to the inlet 14 to maintain the flow of the heat medium in series. Although two heat generating devices 10 and 10 'are shown in FIGS. 3 and 9, the number of the heat generating devices 10 and 10' may be appropriately increased as necessary.

The heating device 10 of another example illustrated in FIGS. 4 and 5 includes a plurality of partitions 22 formed to partition the second passage 15 between the inner container 11 and the outer container 12. The partition 22 has a plurality of holes 23 formed therein to allow flow of the heat medium. Since the heat medium passes through the second passage 15 through the hole 23 of the partition 22, the retention time of the heat medium in the second passage 15, that is, the time of the heat medium passing through the second passage 15 is Is extended. Therefore, the heating time of the heat medium by the planar heating element 19 is extended, and energy efficiency is improved. 4 and 5 show that four holes 23 are formed in three partitions 22 at equal intervals along the circumferential direction, but this is merely illustrative, and the number of partitions 22 and holes 23 and The location can be changed as needed.

Looking at the heat generating device 10 of another example shown in Figure 6, the inner container 11 and the outer container 12 is configured of a separate type. An inner container 11 is accommodated inside the outer container 12, and a cap 24 is provided at an upper portion between the inner container 11 and the outer container 12 to maintain the airtightness of the second passage 15. It is assembled. A spiral protrusion 25 is formed on an outer surface of the inner container 11, and the spiral protrusion 25 is in close contact with the inner surface of the outer container 12 to form the second passage 15 as a spiral passage. The spiral second passage 15 extends the retention time of the heating medium by the extension of its length. Therefore, the heating time of the heat medium by the planar heating element 19 is extended, and energy efficiency is improved. In the present embodiment, the spiral protrusion 25 may be formed on the inner surface of the outer container 12.

1, 7 and 9, the electric boiler of the present invention is heated by the heat generating device 10 to circulate the heat medium holding the heat energy to the heat inlet of the heat generating device 10 so that the heat energy of the heat medium ( 14) and the heat dissipation device 30 connected to the outlet 17, the heat dissipation device 30 is composed of a flat mattress (Mattress) 31 having flexibility. The zigzag-type heat dissipation pipe 32 of the mattress 31 has a first connection pipe 41 and a second connection pipe 42 constituting a pipe line 40 between the heat generator 10 and the heat dissipation device 30. It is connected to the inlet 14 and the outlet 17 of the heat generating device 10 by) to form a passage 33 of the heat medium. The heat dissipation pipe 32, the first connection pipe 41 and the second connection pipe 42 may be made of a material having flexibility, for example, synthetic resin and synthetic rubber. Heat dissipation pipe 32 is embedded in the cover 34, the cover 34 can be made of a variety of materials, such as synthetic resin, fiber, artificial leather having flexibility. A buffer member 35 having flexibility is formed between the heat dissipation pipe 32 and the cover 34 made of synthetic resin, fiber, or the like. In the present embodiment, the heat dissipation device 30 may be installed only on the heat dissipation pipe 32 in which the cover 34 is removed. It may be.

8 illustrates a mattress as another example of a heat dissipation device. Another example of the mattress 36 shown in FIG. 8 is composed of a flexible first sheet (Sheet 37) and a second sheet 38, and between the first and second sheets 37, 38 in front Similar to the heat dissipation pipe 32 of the mattress 31 described above, a zigzag passage 39 is formed. The first and second sheets 37 and 38 may be made of synthetic resin or vinyl. The passage 39 between the first and second sheets 37 and 38 may be formed by fusion of the first and second sheets 37 and 38 along the edge of the passage 39 by conventional high frequency fusion. .

1 and 9, the electric boiler of the present invention is mounted to the pipeline 40, the pump 50 for circulating the heat medium, and the controller 60 for controlling the operation of the heating device 10 and the pump 50. ). The pump 50 is mounted on the first connecting pipe 41 of the conduit 40 for supplying the heat medium discharged from the mattress 31 to the inlet 14 of the heat generating device 10, where the pump 50 ) May be mounted on the second connection pipe 42. As shown in FIG. 1, the valve 43 is mounted on the first connection pipe 41 between the inlet 14 of the heat generating device 10 and the pump 50 as a heat medium injection means for replenishing the heat medium. It is. The user can open the valve 43 and inject the heat medium into the first connection pipe 41 through the open valve 43. The valve 43 of the heat medium injection means may be replaced by a stopper mounted on the first connection pipe 41.

On the other hand, the controller 60 has a plurality of buttons 61 which can be operated by a user, a timer 62 and a display 63 which displays the operation of the electric boiler. In addition, the controller 60 is connected with a current controller 64 for controlling the power applied to the electrode 20 so as to control the heat generation temperature of the heat generator 10 set by the operation of the button 61. .

As shown in FIG. 9, all of the heat generating device 10, the pump 50, and the controller 60 are installed in a case 70 to form a single module. In this way, the electric boiler of the present invention can be constructed if the heating device 10, the pump 50, and the controller 60 are installed in the case 70 in a built-in manner and provided with a single module. have.

On the other hand, the water supply pipe 80 is connected to the first connection pipe 41 between the inlet 14 of the heat generating device 10 and the pump 50 as a water supply means for supplying water to the heat medium. The water supply pipe 80 is equipped with a water supply tank 81 for storing water, and the water supply tank 81 is connected to the water supply 82. The water level of the water supply tank 81 is kept constant by a float valve 83 that controls the water supply of water from the water supply 82. The feed pipe 80 is equipped with a first solenoid valve 84 for controlling the flow of water.

In addition, the second connection pipe 42 between the heat dissipation device 30 and the pump 50 is equipped with a hot water tank 90 for storing hot water for providing hot water. The hot water tank 90 is connected to the second solenoid valve 92 mounted on the first connection pipe 41 by a branch pipe 91, and manually connected to the hot water discharge pipe 93 of the hot water tank 90. The valve 94 is mounted. The water supply 82 is connected to the manual valve 94 of the hot water discharge pipe 93 to supply cold water. The water level of the hot water tank 90 is detected by the water level sensor 95, the water level sensor 95 is composed of a float level gauge. The water level sensor 95 inputs a water level detection signal of the hot water tank 90 to the controller 60, and the controller 60 is connected to the first solenoid valve 84 according to the water level detection signal input from the water level sensor 95. The operation of the second solenoid valve 92 is controlled to control the flow rate of the water supplied through the feed pipe 80 through the branch pipe 91 and the flow rate of the heating water supplied to the hot water tank 90.

10 shows a configuration in which another example of the heat generator according to the present invention is arranged in parallel. Referring to Figure 10, another example of the heating device (110, 110 ') is composed of an inner container 111 of the elongated hollow tubular and the outer container 112 of the hollow tube surrounding the inner container 111, The first passage 113 of the inner vessel 111 and the second passage 114 of the outer vessel 112 are communicated by a plurality of holes 115 formed in the lower portion of the outer surface of the inner vessel 111. . Therefore, the first passage 113 of the inner container 111 and the second passage 114 of the outer container 112 maintain the flow of the heat medium such as water, brine, oil, gas, etc. by the double passage structure.

In addition, the upper cap 120 is mounted on the upper portion of the inner container 111 and the outer container 112. The first passage 113 of the inner container 111 is connected to the inlet 121 of the upper cap 120 for the introduction of the heat medium, the second passage 114 of the outer container 112 is discharge of the heat medium. Is communicated to the outlet 122 of the upper cap 120 for. And the lower cap 130 for closing the first passage 113 and the second passage 114 is mounted on the lower portion of the inner container 111 and the outer container 112. The upper cap 120 and the lower cap 130 are assembled to maintain the airtightness in the upper and lower portions of the inner container 111 and the outer container 112. The inner container 111, the outer container 112, the upper cap 120 and the lower cap 130 of the heat generating device 110 and 110 ′ may be made of transparent glass, ceramic, etc. having heat resistance and low expansion characteristics. It may be made of copper alloy, stainless steel and the like.

On the other hand, when the two heat generating devices 110, 110 'are arranged in parallel, the outlet 122 of the heat generating device 110 is connected to the inlet 121 of the heat generating device 110' by the connecting pipe 123. To keep the heat stream flowing in series. Here, each of the inlet 121 of the heat generator 110 and the outlet 122 of the heat generator 110 ′ is a heat dissipation pipe of the mattress 31 by the heat dissipation device 30 shown in FIGS. 1 and 9. (32) can be connected. Since the planar heating element 19 and the electrode 20 of the heat generating device 110 have the same structure and operation as the planar heating element 19 and the electrode 20 of the heat generating device 10 described above, detailed description thereof will be omitted.

The following describes the operation of the electric boiler according to the present invention having such a configuration.

1 and 9, the heat medium, that is, water introduced into the inlet 14 of the inner container 11 by the operation of the pump 50, that is, water is the first passage 13, the hole of the inner container 11. 16 and the second passage 15 of the outer container 12 are sequentially passed. When power is applied to the electrode 20 by the operation of the current controller 64, the planar heating element 19 generates heat. The water flowing in the first passage 13 and the second passage 15 of the heat generating device 10 is heated by the heating water by the heat of the planar heating element 19, and the heating water is discharged from the outer container 12. Is discharged through). As such, the water flowing sequentially through the first passage 13 of the inner container 11 and the second passage 15 of the outer container 12 is heated for two times by the heat generated by the planar heating element 19, Energy efficiency is greatly improved compared to power. The water can be heated rapidly by controlling the voltage applied to the electrode 20 by the operation of the current controller 64.

1 and 7, the heating water discharged through the outlet 17 of the outer container 12 is the passage of the mattress 31 through the second connecting pipe 42 of the conduit 40 ( The heating of the heating area is made while the heat of the heating water supplied to 33 and flowing through the passage 33 is radiated. The heating water discharged from the passage 33 of the mattress 31 is recovered and circulated through the first connection pipe 41 of the conduit 40 to the inlet 14 of the inner container 11. Since the operation of the mattress 36 shown in FIG. 8 is the same as the mattress 31 described above, a detailed description thereof will be omitted. The mattress 36 forms a passage 39 by high frequency welding of the first and second sheets 37 and 38, so that the shape of the mattress 36 and the shape of the passage 39 can be variously changed. It has the advantage of improving it. And since the mattresses 31 and 36 can be folded by their flexibility, the mattresses 31 and 36 can be easily transported and stored by reducing their size.

9, the heating water stored in the hot water tank 90 may be used as hot water by opening the manual valve 94 of the hot water discharge pipe 93. When the water level of the water supply tank 81 is lower than the set water level due to the use of hot water, the water level of the water supply tank 81 is detected by the water level sensor 95, and the water level detection signal of the water level sensor 95 is controlled by the controller 60. ) Is entered. The controller 60 opens the first and second solenoid valves 84 and 92 according to the water level detection signal input from the water level sensor 95, and the flow rate of the water supplied through the water supply pipe 80 and the hot water tank 90. Control the flow rate of water supplied to Therefore, the insufficient water is stably supplied by the use of hot water. As shown in FIG. 1, the user directly draws the heat medium through the valve 43 mounted on the first connection pipe 41 between the inlet 14 of the heat generating device 10 and the pump 50. It can be easily replenished or dispensed.

In another example of the heating device 110 shown in FIG. 10, the inner container 111 and the outer container 112 are manufactured in a hollow tube shape, and the upper and lower portions of the inner container 111 and the outer container 112 are formed. The separable assembly structure for mounting the upper cap 120 and the lower cap 130 has the advantage that the manufacturing process can be simple and simple compared to the heating device 10.

The embodiments described above are merely to describe preferred embodiments of the present invention, the scope of the present invention is not limited to the described embodiments, those skilled in the art within the spirit and claims of the present invention It will be understood that various changes, modifications, or substitutions may be made thereto, and such embodiments are to be understood as being within the scope of the present invention.

As described above, according to the electric boiler according to the present invention, the heating medium passing through the first passage of the inner container and the second passage of the outer container is heated by heating of the planar heating element provided on the outer surface of the outer container. It can operate with low power and high efficiency. In addition, the heat generating device, the pump and the controller is installed in the case is built in a single module, the heat generating device can be produced by miniaturization and light weight by a simple configuration connected to the mattress having flexibility as a heat radiating device. And by the flexible mattress can greatly improve the workability, storage and transportability, there is an effect that can simplify the piping and improve the design freedom.

Claims (7)

An inner container having a first passage of a heat medium, an outer container surrounding the inner container so as to form a second passage communicating with the first passage of the inner container, and heat energy by applying power to an outer surface of the outer container. A heating device composed of a planar heating element provided to be generated; Heat dissipation means connected to the first passage of the inner container and the second passage of the outer container to circulate the heat medium; A pump for circulating the heat medium between the heat generating device and the heat dissipation means; An electric boiler comprising a controller for controlling the power applied to the planar heating element of the heat generating device. The electric boiler according to claim 1, wherein a plurality of partition walls having a plurality of holes are further formed between the inner container and the outer container of the heat generating device so as to partition the second passage. The electric boiler according to claim 1, wherein the second passage of the heat generating device is formed spirally. The method of claim 1, wherein the inner container and the outer container of the heat generating device is formed in a hollow tubular shape, the hollow tubular inner container and the upper portion of the outer container is in communication with the inlet port and the second passage communicating with the first passage. The upper cap is equipped with an outlet, the lower portion of the inner tube and the outer vessel of the hollow tubular tube is equipped with an electric boiler. The electric boiler according to any one of claims 1 to 4, wherein the heat generator, the pump, and the controller are installed in a case. The electric boiler according to claim 1, wherein said heat dissipation means is made of a mattress having flexibility in which a zigzag passage of the heat medium is formed. According to claim 1, wherein the water supply tank is connected to the first passage of the heat generating device, the first connection pipe of the pipe connecting the heat radiating means and the pump, the second connection of the pipe connecting the outlet and the heat radiating means of the heat generating device Electric boiler with hot water tank connected to the pipe.