KR20080058148A - Electric boiler - Google Patents

Abstract

An electric boiler is provided to increase capacity of the electric boiler and to rapidly heat water at a high efficiency by using electric energy which is safe and efficient. An electric boiler comprises a body(10) for heating fluid type conductive heat medium(14), and a heat exchanger(20) in which the fluid type conductive heat medium is heat-exchanged with circulation water of a heating pipe(31). The body of the electric boiler includes a boiler housing(11) having the fluid type conductive heat medium therein, a heating box(12) installed in the boiler housing, and an electrode pair(13) to which electricity is applied from a power source section. The boiler housing is formed with a heat medium inlet port(111) and a heat medium outlet port(112).

Description

Electric Boiler {ELECTRIC BOILER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric boiler, and more particularly, to an electric boiler using a fluid conductive heat medium containing carbons.

In general, an electric heater or a heating device adopts a method of converting electrical energy into thermal energy by applying electricity to a heating element that is an electrical resistor. For example, recently used electric heaters include an electric stove type that directly generates heat using a nichrome resistance wire, or a carbon electric heater that generates heat by applying electricity to a carbon body.

However, an electric heater in which such a solid type electric resistor directly generates heat has a problem in that the heat capacity of the resistor is short and the resistance thereof is short.

In addition, the electric heater using such a solid electrical resistor is limited to use as a general-purpose household heating device. For example, it is not easy to combine with the current mainstream ondol type boiler apparatus, and there are various difficulties to apply as a heating apparatus to replace a gas boiler in the installed ondol heating apparatus.

Therefore, the electric boiler of the system which heats a fluid type conductive heat medium containing carbon first and exchanges the heat of a fluid type conductive heat medium with circulating water secondly is proposed.

An electric boiler using such a fluid conductive heat medium is useful in that it can easily replace an existing gas boiler, but the existing general form has some difficulties. For example, in order to be used for ondol heating, the capacity of a fluid conductive heat medium that is primarily heated must be large enough. This is because it must have a sufficient contact time with the circulating water which receives heat secondly. However, when the fluid type conductive heat medium has a large capacity, it is also difficult to rapidly lower the temperature. In general, since the heating circulating water is also used as drinking water or hot water for baths, a configuration for rapid temperature can be said to be essential.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and has an object of providing an electric boiler using a fluid conductive heat medium containing carbon, which has a sufficient heating capacity and can be rapidly cooled.

The present invention for achieving the above object is an electric boiler using a fluid conductive heat medium containing carbon, which generates heat when electricity is applied: a fluid conductive heat medium, containing a heat medium inlet and a heat medium outlet, The outlet port has a boiler housing formed at the top; A heating vessel disposed in the boiler housing, the heating vessel having a lower opening and an upper opening, through which the fluid conductive heat medium is communicable so as to fill the fluid conductive heat medium therein; And an electrode pair arranged to apply electricity to the fluid conductive heat medium inside the heating vessel, and when the fluid conductive heat medium inside the heating vessel is heated up, the heated fluid conductive heat medium passes through the upper opening by at least convection. It flows to the upper position of the boiler housing and also flows out of the boiler housing.

With this configuration, the fluid conductive heat medium inside the heating chamber, which has a sufficient amount of the fluid conductive heat medium and is substantially limited, generates heat, and the heated heat medium flows toward the heat medium outlet formed in the upper portion of the boiler housing and flows out. By circulating, a rapid temperature temperature is enabled.

Preferably, the heating medium includes a heat medium circulation pipe connected to recover the fluid conductive heat medium flowing out of the heat medium outlet to the heat medium inlet, and a heat exchanger installed to achieve heat exchange between the heat medium of the heat medium circulation pipe and the heating circulation water.

Preferably, a heat medium circulation pump for circulating the fluid conductive heat medium is further provided.

Preferably there is further provided a heat medium flow guide member for guiding the heat medium flowing into the heat medium inlet of the boiler housing to the lower opening of the heating vessel.

With such a configuration, the flow of the exothermic fluid-type conductive heat medium can flow and circulate more quickly by the convection and the power of the pump.

The fluid conductive heat medium includes Al powder, carbon powder, ethylene glycol and water.

The fluid conductive heat medium may further include calcium chloride.

In addition, the above object of the present invention, an electric boiler using a fluid-type conductive heat medium that generates heat when electricity is applied, the boiler housing for accommodating the heat medium; A heating unit installed at a lower portion of the boiler housing to accommodate a heated heating medium; An electrode pair installed inside the heating unit and extending from a bottom surface of the housing to heat the heat medium in the heating unit; It is also achieved through the provision of an electric boiler provided on the boiler housing, including a heating pipe for receiving the heat from the heat medium to form hot water therein.

The heating unit of the electric boiler includes a heat medium entrance provided to convex the inside of the boiler housing with the heat medium heated by the electrode pair.

In addition, the heating pipe, the hot water inlet provided in the lower portion of the heating pipe to the water flow; And a hot water outlet provided at an upper portion of the heating pipe to discharge hot water heated by the introduced water.

The electric boiler is filled with water and installed on the outside of the boiler housing, the outer housing for preheating the heat medium; And a preheater for preheating the water filled in the outer housing.

The electric boiler of the present invention has the following effects. First, by having a large capacity as a whole it can easily replace the pre-installed gas boiler and the like. Second, it has a large capacity, but also a configuration capable of rapid temperature. This means that it is sufficiently compatible with the existing domestic gas boiler and the like. Third, the above-described large capacity and temperature-capable configuration can be implemented relatively simply. Fourth, it uses a fluid type heat medium that has a relatively long life while using efficient and safe electrical energy.

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

First Example

1 is a cross-sectional view schematically showing an electric boiler according to a first embodiment of the present invention. 2 is a schematic plan sectional view of a boiler body of an electric boiler according to a first embodiment of the present invention. 3 is a view showing a heating tube of the electric boiler according to the first embodiment of the present invention. 4 is a cross-sectional view schematically showing a heat exchanger of the electric boiler according to the first embodiment of the present invention.

In the electric boiler according to the first embodiment of the present invention, a boiler main body 10 in which a fluid-type conductive heat medium (14: hereinafter referred to as a "heat medium") containing carbon is generated, and in the boiler main body 10 The heat generating heat medium includes a heat exchanger 20 in which heat is exchanged with the heating circulation water of the heating pipe 31 of the ondol room 30 while performing external circulation.

1 illustrates a configuration in which two boiler body parts are connected in series. If necessary, at least one boiler body may be connected in series or in parallel with the heat exchanger.

The boiler body 10 includes a boiler housing 11 having a heat medium 14 contained therein, a heating tube 12 disposed in the boiler housing 11, and an electrode pair to which electricity is applied from the power applying unit 40 ( 13).

As can be seen in FIGS. 1 and 2, the boiler housing 11 receives a heat medium 14 therein and has a heat medium inlet 111 and a heat medium outlet 112. Through the heat medium inlet 111 and the heat medium outlet 112, the fluid conductive heat medium flows out and flows in, and circulates through the heat medium circulation pipe 15 to the heat exchanger 20. Preferably the heat medium outlet 112 is formed on top of the boiler housing (11). This is to allow the exothermic or elevated temperature of the heat medium to naturally be located in the upper portion by the convection phenomenon to flow out. In addition, the heat medium inlet 111 is preferably such that the heat medium is introduced into the lower portion of the boiler housing (11). However, this may be implemented by the heat medium flow guide member 16 to be described later, as shown in the figure. Boiler housing 11 is preferably made of a heat insulating or heat insulating material, or may be a structure in which the heat insulating or heat insulating material is laminated on the outer surface.

The heat medium 14 is a fluid conductive heat medium containing Al powder, carbon powder, ethylene glycol, calcium chloride (CaCl 2), and water. Therefore, when electricity is applied, current flows to generate heat. Carbon powder includes carbon powder and graphite powder.

The heating cylinder 12 is disposed in the boiler housing 11. The heating tube 12 has a lower opening 121 and an upper opening 122 so that the heat medium 14 can communicate therein, and thus the heat medium 14 is filled therein.

A rod-shaped electrode pair 13 arranged to apply electricity to the heat medium 14 inside the heating tube 12 is disposed. (+) And (-) of the electrode pair 13 is connected to the terminal to receive a direct current from the power supply unit 40. An insulating fixture 131 is used for the installation of the electrode pair 13. The porous protective member 132 may be installed around the electrode pair 13 to mitigate the impact caused by the sudden temperature change and to prevent the powder or the like contained in the heat medium 14 from adhering to the surface.

When electricity is applied to the heat medium 14 inside the heating tube 12 through the electrode pair 13, the portion to which the electricity is applied, in particular, the heat medium 14 inside the heating tube 12, generates heat / heats up. It is heated up relatively quickly because electricity is applied to the heat medium in the substantially limited region. The heated medium will basically flow out of the heater 12 through the top opening 122 by convection. In addition, the heat medium outside the heating tube 12 flows into the lower opening 121. In addition, the heating of the heat medium is substantially performed by the heat medium circulation flow described in more detail besides the convection phenomenon. The heated heating medium thus flow is positioned above the boiler housing 11. Some or all of the heat medium flowing to the upper position of the boiler housing 11 preferentially flows out through the heat medium outlet 112 provided in the upper part of the boiler housing 11. It is sent to the heat exchanger 20 through the heat medium circulation pipe 15.

Preferably, the heat medium flow guide member 16 for guiding the heat medium flowing into the heat medium inlet 111 of the boiler housing 11 to the lower opening 121 of the heating tube 12 is further installed. The drawing refers to the piping part located in the boiler housing 11. Accordingly, the heat medium 14 substantially flowing into the boiler housing 11 flows into the bottom of the boiler housing 11 and also flows into the lower opening 121 of the heating tube 12. In the figure, the heat medium flow guide member 16 in the form of a pipe connected to the lower opening 121 of the heating tube 12 is shown, but it is not necessary to be connected directly, it may be installed in close proximity. In addition, the lower opening 121 and the upper opening 122 may be formed in plural.

For circulation of the heat medium 14, the heat medium circulation pump 17 is provided, and there is no particular restriction on the arrangement position. In addition, a circulation pump 32 for heating circulation water is also provided in the heating pipe 31.

As described above, the heat medium 14, which is heated or heated in the heating tube 12 by electric application, is positioned in the upper portion of the boiler housing 11 by convection and circulating flow so that the heat medium outlet 112 is opened. Some or all of it is leaked through.

Therefore, the electric boiler of this invention is equipped with the structure which can supply a rapid temperature. In other words, hot water can be supplied without delay when the user switches on the boiler or turns on the hot water. In addition, the whole heat medium 14 accommodated in the boiler housing 11 is heated up relatively slowly by heat transfer between the heat mediums, so that a large amount of heating is possible.

There is no particular restriction on the shape of the heat exchanger 20. It will be apparent to those skilled in the art that various forms may be applied in addition to the illustrated manner. For example, as shown in FIG. 4, the heating pipe 32 may be reciprocated and bent a plurality of times in the heat exchanger housing 21 in which the heat medium 14 may be accommodated so as to contact the heat medium 14 as much as possible.

Like conventional boiler apparatus, the electric boiler of the present invention may be installed such that a sensor 18 for detecting at least one temperature, pressure or the like detects the temperature and pressure of the heat medium 14 and / or the heating circulation water. In addition, a control unit 50 for controlling the heat medium circulation pump 17, the circulation water circulation pump 32, the sensor 18, the power supply unit 40, and various valves (not shown) is installed according to a user input or setting. Can be.

2nd Example

5 is a sectional view schematically showing an electric boiler according to a second embodiment of the present invention.

Referring to FIG. 5, the electric boiler includes a boiler housing 210, a heating unit 220, and a heating pipe 230 in the main body 200, and is heated by the main body 200. Is composed of a heating pipe 240 is circulated.

First, the heating medium 211 is filled in the boiler housing 210 of the main body 200, and the filled heating medium 211 is heated by the electrode pair 221. In addition, the electrode pairs 211 provided are provided in the heating unit 220.

The heating unit 220 is provided in a fixed state of the lower portion of the boiler housing (210). In addition, the heating medium 220 is provided with a heating medium entrance 222 so that the heating medium 211 flows in or out. The electrode pairs 221 provided in the heating unit 220 are coated by an insulator such as Teflon. The configuration of the electrode pair 221 is preferably the same as the configuration of the electrode pair disclosed in the first embodiment except that it is coated with Teflon or the like, it may be configured as any conductive material.

In addition, the configuration of the heat medium 211 filled in the boiler housing 210 is the same as described in the first embodiment. The heat medium 211 is also filled in the heating part 220 through the heat medium entrance 222.

In particular, the electrode pair 221 provided in the heating unit 220 is configured to face from the bottom to the top. That is, the bottom of the boiler housing 210 is fixed to the boiler housing 210 through the insulating fixing portion 223.

In addition, the heating pipe 230 is disposed to be fixed to the upper region inside the boiler housing (210). The inside of the heating pipe 230 is filled with water, water is introduced through the hot water inlet 232, water is discharged through the hot water outlet 231. In particular, the hot water inlet 232 is connected to the lower portion of the heating pipe 230, the hot water outlet 231 is preferably connected to the upper portion of the heating pipe 230.

In addition, the temperature sensor 225 is preferably disposed on the outer side of the heating unit 220. The temperature sensor 225 enables the measurement of the temperature of the heat medium 211 in the boiler housing 210.

First, the heat medium 211 made of the electrolyte is heated by the voltage applied to the electrode pair 221. The heated heating medium 211 may circulate inside the heating part 220, but flows out into the boiler housing 210 and the heating part 220 through the heating medium inlet 222 by convection. In addition, the heat medium 211 with a high temperature moves to the upper part in the boiler housing 210 by convection, and the high temperature heat medium 211 moved to the upper part is used to heat the heating pipe 230. In addition, the heat medium 211 whose temperature is lowered by the heating of the heating pipe 230 is lowered to the lower part of the boiler housing 210 again. The lowered heat medium 211 flows into the heating unit 220 through the heat medium entrance and exit 222, and the heated heat medium 211 is heated again by the electrode pair 221.

In addition, the heating medium 211 heated to the upper portion of the boiler housing 210 is discharged to the heating pipe 240 through the heating medium outlet 213. The heat medium 211 in the heating pipe 240 circulates through the heating pipe 240 by the pressure of the pump 245. The heated heat medium 211 is introduced into the heat medium inlet 215 provided in the boiler housing 210 through the pump 245.

During the circulation of the heating pipe 240, the heat medium 211 dissipates heat and flows into the boiler housing 210 in a state where the temperature is lowered. The heat medium 211 passing through the heating pipe 240 and introduced into the boiler housing 210 flows back into the heating unit 220 and is heated by the electrode pair 221.

In the above-described embodiment, the electrode pairs 221 are disposed below the boiler housing 210 and have a structure that extends upwardly while being fixed to the bottom surface. Therefore, the convection phenomenon of the heat medium inside the boiler housing 210 can be used, and the heat medium 211 can be heated efficiently.

In addition, the electric boiler according to the present embodiment may further include an outer housing 250 on the outer side of the main body 200. The space inside the outer housing 250 is filled with components for preheating the main body 200. That is, the outer housing 250 is filled with water, and the preheater 251 is provided to preheat the filled water. The water heated through the preheater 251 is used to preheat the heat medium 211 in operation of the first electric boiler. Typically, the electrolyte constituting the heat medium 211 is not heated to a sufficient temperature even when a voltage is applied to the electrode pair 221 at the beginning of operation. Therefore, water is preheated in the outer housing 250 so that the heat medium 211 can be sufficiently heated by the electrode pair 221.

As described above, in the embodiments of the present invention, the heating medium may be easily heated through electricity, and hot water may be formed and discharged by appropriate utilization of the heating medium. In addition, there is an advantage that the heating can be efficiently performed with a relatively simple configuration.

1 is a cross-sectional view schematically showing an electric boiler according to a first embodiment of the present invention.

2 is a schematic plan sectional view of a boiler body of an electric boiler according to a first embodiment of the present invention.

3 is a view showing a heating tube of the electric boiler according to the first embodiment of the present invention.

4 is a cross-sectional view schematically showing a heat exchanger of the electric boiler according to the first embodiment of the present invention.

5 is a sectional view schematically showing an electric boiler according to a second embodiment of the present invention.

Claims (10)

An electric boiler using a fluid conductive heat medium containing carbon, which generates heat when electricity is applied: A boiler housing accommodating the fluid conductive heat medium and having a heat medium inlet and a heat medium outlet, wherein the heat medium outlet is formed at an upper portion thereof; A heating vessel disposed in the boiler housing, the heating vessel having a lower opening and an upper opening, through which the fluid-type conductive heat medium is communicable and the fluid-type conductive heat medium is filled therein; And A pair of electrodes arranged to apply electricity to the fluid conductive heat medium inside the heating vessel, When the fluid type conductive heat medium inside the heating vessel is heated, the heated fluid conductive heat medium flows to the upper position of the boiler housing through the upper opening by at least convection and flows out of the boiler housing. . The method according to claim 1, A heat medium circulation pipe connected to the fluid-type conductive heat medium discharged to the heat medium outlet to be recovered to the heat medium inlet; An electric boiler comprising a heat exchanger is installed so that heat exchange between the heat medium and the heating circulation water of the heat medium circulation pipe. The method according to claim 2, The electric boiler is further provided with a heat medium circulation pump for circulating the fluid conductive heat medium. The method according to claim 3, And a heating medium flow guide member for guiding the heating medium flowing into the heating medium inlet of the boiler housing to the lower opening of the heating tube. The method according to claim 1, The fluid-type conductive heating medium is an electric boiler comprising Al powder, carbon powder, ethylene glycol and water. The method according to claim 5, The fluid-type conductive heating medium further comprises calcium chloride. In an electric boiler using a fluid conductive heat medium that generates heat when electricity is applied, A boiler housing for receiving the heat medium; A heating unit installed at a lower portion of the boiler housing to accommodate a heated heating medium; An electrode pair installed inside the heating unit and extending from a bottom surface of the housing to heat the heat medium in the heating unit; The boiler is provided in the upper portion of the boiler housing, the heating boiler for receiving the heat from the heat medium to form a hot water therein. The electric boiler according to claim 7, wherein the heating unit comprises a heat medium entrance provided so that the heat medium heated by the electrode pairs convex the inside of the boiler housing. The method of claim 7, wherein the heating pipe, Hot water inlet provided in the lower portion of the heating pipe to the water inlet; And An electric boiler, characterized in that it comprises a hot water outlet provided in the upper portion of the heating pipe for discharging the heated hot water. The method of claim 7, wherein the electric boiler, An outer housing filled with water and installed outside the boiler housing for preheating the heating medium; And And a preheater for preheating the water filled in the outer housing.

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