WO2007139327A1 - Electric boiler of direct connection type - Google Patents

Electric boiler of direct connection type Download PDF

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Publication number
WO2007139327A1
WO2007139327A1 PCT/KR2007/002572 KR2007002572W WO2007139327A1 WO 2007139327 A1 WO2007139327 A1 WO 2007139327A1 KR 2007002572 W KR2007002572 W KR 2007002572W WO 2007139327 A1 WO2007139327 A1 WO 2007139327A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
radiator
pipeline
heat
heat carrier
Prior art date
Application number
PCT/KR2007/002572
Other languages
French (fr)
Inventor
Sung Don Park
Original Assignee
Sung Don Park
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sung Don Park filed Critical Sung Don Park
Publication of WO2007139327A1 publication Critical patent/WO2007139327A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/225—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating electrical central heating boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/02—Resistances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the present invention relates to an electric boiler of the type directly connected to a radiator pipeline and, more particularly, to a pipeline direct connection type electric boiler capable of selectively heating a desired heating region and also capable of directly introducing hot heating water into a radiator pipeline with little loss of heat.
  • a heating boiler is an apparatus that generates thermal energy using an energy source such as petroleum, gas or electricity and heats up heat carrier, e.g., water, brine or oil (hereinafter referred to as "heating water”), to thereby heat an indoor area.
  • energy source such as petroleum, gas or electricity
  • heat carrier e.g., water, brine or oil
  • Such a heating boiler includes a heating device for heating up the heating water, a radiator pipeline arranged in zigzags on a floor surface of a heating region for radiating heat of the heating water and a circulation pump for circulating the heating water in the heating device through the radiator pipeline.
  • the heating device is formed of a burner or an electric heater and is usually installed in a heater room isolated from the heating region.
  • the heating device is connected to the radiator pipeline via a connection pipe.
  • the heating boiler suffers from a drawback in that heat loss occurs while the hot heating water flows through the connection pipe, which drawback leads to a problem of increased energy consumption.
  • the conventional heating boiler is designed to heat up a plurality of heating regions by use of a single heating device, at which time the heating water heated by the heating device circulates through the respective heating regions one after another to heat up them. Inability to selectively heat up one or more specified heating region is a shortcoming of the conventional heating boiler.
  • non-heating regions unnecessary heating regions
  • valves unnecessary heating regions
  • this makes it necessary to perform an onerous task of shutting off the valves associated with the non-heating regions one by one.
  • non-heating regions unnecessary heating regions
  • Another object of the present invention is to provide a pipeline direct connection type electric boiler which is designed to heat up only a desired heating region, thereby minimizing energy consumption.
  • a further object of the present invention is to provide a pipeline direct connection type electric boiler which is designed to introduce heating water of an elevated temperature heated by a heating device into a radiator pipeline with little loss of heat, thereby maximizing energy consumption efficiency.
  • a pipeline direct connection type electric boiler including: a radiator pipeline arranged in zigzags on a floor surface of a heating region; a heating tube directly connected to the radiator pipeline, the heating tube having a internal passageway through which heat carrier in the radiator pipeline can pass; a planar heater provided on an outer surface of the heating tube and adapted to, when supplied with an electric current, generate thermal energy to heat up the heat carrier passing through the internal passageway of the heating tube; a check valve installed in an inlet port of the heating tube for allowing the heat carrier in a single direction; and a radiator installed in a specified portion of the radiator pipeline for cooling down the heat carrier so that a difference in temperature can occur between the heat carrier flowing through different portions of the radiator pipeline.
  • the radiator may be installed on an upstream side of the heating device to heat up the heat carrier flowing through the upstream side of the heating device.
  • the radiator may be exposed to the air in the heating region to radiate heat of the heat carrier into the air.
  • the pipeline direct connection type electric boiler in accordance with the present invention is of a structure that a heating device for heating up heating water is directly connected to a radiator pipeline. This allows the heating water heated by the heating device to be directly introduced into the radiator pipeline. Thanks to this fact, it is possible to introduce the heating water into the radiator pipeline with little loss of heat and consequently to provide a maximized heating effect.
  • the present electric boiler is capable of independently heating up individual heating regions on a region-by-region basis, because heating devices are installed in a one-to-one relationship with the radiator pipelines in the respective heating regions. This makes it possible to selectively heat up only a desired heating region, thereby minimizing energy consumption.
  • Fig. 1 is a pipeline diagram showing a configuration of a pipeline direct connection type electric boiler in accordance with the present invention.
  • Fig. 2 is a view showing the details of a heating device employed in the pipeline direct connection type electric boiler of the present invention.
  • Fig. 3 is a pipeline diagram showing a pipeline direct connection type electric boiler in accordance with another embodiment of the present invention.
  • Fig. 1 shows a configuration of a pipeline direct connection type electric boiler in accordance with the present invention
  • Fig. 2 illustrates the details of a heating device employed in the pipeline direct connection type electric boiler of the present invention.
  • the pipeline direct connection type electric boiler of the present invention includes a radiator device 10 that consists of a flat hot- water-circulating panel having a radiator pipeline 12 and is installed on a floor surface of a heating region A.
  • the radiator pipeline 12 is of a closed loop type and is arranged within the panel in zigzags.
  • the radiator pipeline 12 is made of a flexible material, e.g., synthetic resin, synthetic rubber or the like. If necessary, the radiator pipeline 12 may be constructed from a metallic material.
  • the radiator device 10 of this type allows heating water with thermal energy of an elevated temperature to circulate through the heating region A, whereby the thermal energy of the heating water is emitted to the heating region A to thereby heat up the same.
  • the radiator device 10 is constructed from the flat hot-water-circulating panel having the radiator pipeline 12 in the illustrated embodiment, it may be formed of only the radiator pipeline 12 if such a need arises.
  • the pipeline direct connection type electric boiler of the present invention includes a heating device 20 for heating up the heating water flowing through the radiator pipeline 12 of the radiator device 10.
  • the heating device 20 includes a heating tube 22 installed on the radiator pipeline 12 and a planar heater 24 attached to an external surface of the heating tube 22.
  • the heating tube 22 has an inlet port 22a communicating with one end of the radiator pipeline 12, an internal passageway 22b through which the heating water introduced from the inlet 22a flows, and an outlet port 22c for discharging the heating water in the internal passageway 22b to the other end of the radiator pipeline 12.
  • the heating tube 22 is directly connected to the radiator pipeline 12 so that the heating water flowing through the radiator pipeline 12 can be introduced into the heating tube 22 and then flows through the internal passageway 22b.
  • the heating tube 22 is preferably made of a material having a heat resistance and low expansion characteristics, e.g., a quartz tube or a ceramic tube.
  • the planar heater 24 is one kind of resistors and can be formed into a thin film by coating a conductive material on the heating tube 22.
  • a plurality of electrodes 26 for applying an electric current is attached to a surface of the planar heater 24 at a specified interval.
  • Each of the electrodes 26 is formed into a ring shape to extend along an outer circumference of the heating tube 22 and is preferably made of silver.
  • the planar heater 24 As an electric current is applied to the electrodes 26, the planar heater 24 generates heat of an elevated temperature to heat up the heating tube 22, whereby the heating water flowing through the internal passageway 22b of the heating tube 22 is heated to a high temperature.
  • the pipeline direct connection type electric boiler of the present invention includes a pump 30 mounted to the radiator pipeline 12 and a control means 40 for controlling operations of the heating device 20 and the pump 30.
  • the pump 30 is a means for circulating the heating water and is operated by an electric current to pump the heating water within the radiator pipeline 12. By the pumping operation of the pump 30, the heating water is forcibly circulated through the radiator pipeline 12.
  • the control means 40 consists of a temperature sensor 42 for detecting the temperature of the heating water flowing through the radiator pipeline 12 and a controller 44 for controlling the heating device 20 and the pump 30 according to the temperature of the heating water detected by the temperature sensor 42.
  • the controller 44 is adapted to compare the temperature of the heating water inputted from the temperature sensor 42 with a predetermined reference temperature. If the temperature of the heating water is lower than the reference temperature, the controller 44 applies an electric current to the electrodes 26 of the heating device 20 to thereby operate the heating device 20. In contrast, if the temperature of the heating water is higher than the reference temperature, the controller 44 cuts off the electric current applied to the electrodes 26 of the heating device 20 to thereby stop the operation of the heating device 20. [34] In other words, the controller 44 serves to control the heating device 20 to accomplish the reference temperature which is preset by a user. As a result, the heating water flowing through the radiator pipeline 12 is kept at the reference temperature, which makes it possible to heat up the heating region A to a specified temperature.
  • the controller 44 includes a plurality of buttons (not shown) with which the user can change the reference temperature and a timer (not shown) with which the user can preset the operating time of the heating device 20.
  • the reference temperature is preset by use of the buttons of the controller 44.
  • the current temperature of the temperature sensor 42 is detected by the temperature sensor 42 and inputted to the controller 44.
  • the controller 44 applies an electric current to the planar heater 24 of the heating device 20 and the planar heater 24 generates heat of an elevated temperature to heat up the heating tube 22.
  • the heating tube 22 heats up the heating water flowing through the internal passageway 22b thereof to produce hot heating water.
  • the hot heating water heated in the heating tube 22 is circulated through the radiator pipeline 12 by the pumping action of the pump 30.
  • the hot heating water circulating through the radiator pipeline 12 emits heat of an elevated temperature to heat up the heating region A.
  • the controller 44 cuts off the electric current applied to the heating device 20.
  • the heating device 20 stops heating up the heating water and, consequently, the heating water is prevented from being overheated to a temperature greater than the reference temperature. This makes it possible to keep constant the temperature of the heating region A.
  • the pipeline direct connection type electric boiler of the present invention is of a structure that the heating device 20 for heating up the heating water is directly connected to the radiator pipeline 12. This allows the heating water heated by the heating device 20 to be directly introduced into the radiator pipeline 12. Thanks to this fact, it is possible to introduce the heating water into the radiator pipeline 12 with little loss of heat, consequently providing a maximized heating effect.
  • the present electric boiler is capable of independently heating up the individual heating regions A on a region-by-region basis, because the heating devices 20 are installed in a one-to-one relationship with the radiator pipelines 12 in the respective heating regions A. This makes it possible to selectively heat up only a desired heating region, thereby minimizing energy consumption.
  • Fig. 3 there is shown a pipeline direct connection type electric boiler in accordance with another embodiment of the present invention.
  • the electric boiler of this embodiment includes a radiator 50 as a means for circulating the heating water through the radiator pipeline 12.
  • the radiator 50 is provided with a plurality of tubes (not shown) through which the heating water can pass.
  • the radiator 50 is installed on an upstream side of the heating device 20 and exposed to the air so that it can radiate heat of the heating water into the air of the heating region A.
  • the radiator 50 of this type serves to cool down the heating water flowing through a specified portion of the radiator pipeline 12.
  • the radiator 50 cools down the heating water flowing through the upstream side of the heating device 20 (the lower portion in the drawings). This reduces the temperature and density of the heating water flowing through the upstream side of the heating device 20, thereby creating a difference in temperature and density between the heating water flowing through the upstream side of the heating device 20 and the heating water flowing through the downstream side thereof.
  • Such a difference in temperature and density before and after the heating device 20 helps to assure smooth circulation of the heating water through the radiator pipeline 12.
  • a check valve 52 is installed in an entrance port of the heating device 20.
  • the check valve 52 allows the heating water passed through the radiator 50 to flow toward only the downstream side of the heating device 20 (the upper portion in the drawings) but prevents the heating water introduced into the heating tube 22 from flowing toward the upstream side of the heating device 20 (the lower portion in the drawings).
  • the heating water introduced into the heating tube 22 of the heating device 20 is heated up by the planar heater 24 to have an elevated temperature and an increased pressure.
  • the heating water thus heated tends to escape out of the heating tube 22 under the action of the increased pressure.
  • the heating water is allowed to flow toward only the downstream side of the heating tube 22, because the flow of the heating water toward the upstream side is inhibited by means of the check valve 52.
  • the electric boiler of the present embodiment is of a structure that the heating water is circulated under the action of the check valve 52 and the radiator 50, there is no need, unlike the preceding embodiment, to employ a pump for forcibly circulating the heating water. This makes it possible to reduce energy consumption as far as possible, thereby providing an advantageous effect of low electricity consumption and high efficiency.
  • the pipeline direct connection type electric boiler of the present invention is used to heat up an indoor area in the embodiments described and shown above, the present invention is not limited thereto.
  • the present electric boiler may be installed in roads, bridges, airport runways and so forth to keep the surfaces thereof against freezing.
  • the present invention can be applied to an electric boiler capable of selectively heating up only a desired heating region and directly introducing heating water of an elevated temperature into a radiator pipeline with little loss of heat.

Abstract

A pipeline direct connection type electric boiler includes a radiator pipeline arranged in zigzags on a floor surface of a heating region, a heating tube directly connected to the radiator pipeline, the heating tube having a internal passageway through which heat carrier in the radiator pipeline can pass, a planar heater provided on an outer surface of the heating tube and adapted to, when supplied with an electric current, generate thermal energy to heat up the heat carrier passing through the internal passageway of the heating tube, a check valve installed in an inlet port of the heating tube for allowing the heat carrier in a single direction, and a radiator installed in a specified portion of the radiator pipeline for cooling down the heat carrier so that a difference in temperature can occur between the heat carrier flowing through different portions of the radiator pipeline.

Description

Description
ELECTRIC BOILER OF DIRECT CONNECTION TYPE
Technical Field
[1] The present invention relates to an electric boiler of the type directly connected to a radiator pipeline and, more particularly, to a pipeline direct connection type electric boiler capable of selectively heating a desired heating region and also capable of directly introducing hot heating water into a radiator pipeline with little loss of heat. Background Art
[2] A heating boiler is an apparatus that generates thermal energy using an energy source such as petroleum, gas or electricity and heats up heat carrier, e.g., water, brine or oil (hereinafter referred to as "heating water"), to thereby heat an indoor area.
[3] Such a heating boiler includes a heating device for heating up the heating water, a radiator pipeline arranged in zigzags on a floor surface of a heating region for radiating heat of the heating water and a circulation pump for circulating the heating water in the heating device through the radiator pipeline.
[4] The heating device is formed of a burner or an electric heater and is usually installed in a heater room isolated from the heating region. The heating device is connected to the radiator pipeline via a connection pipe.
[5] In the conventional heating boiler, the hot heating water heated by the heating device is introduced into the radiator pipeline through the connection pipe. Therefore, the heating boiler suffers from a drawback in that heat loss occurs while the hot heating water flows through the connection pipe, which drawback leads to a problem of increased energy consumption.
[6] Furthermore, the conventional heating boiler is designed to heat up a plurality of heating regions by use of a single heating device, at which time the heating water heated by the heating device circulates through the respective heating regions one after another to heat up them. Inability to selectively heat up one or more specified heating region is a shortcoming of the conventional heating boiler.
[7] Although only a desired heating region can be heated by disconnecting unnecessary heating regions (hereinafter referred to as "non-heating regions") with valves, this makes it necessary to perform an onerous task of shutting off the valves associated with the non-heating regions one by one. Furthermore, even when only the desired heating region is heated, there is a need to heat up all the heating water within the connection pipes that provide connection to the respective heating regions. This poses a problem of increased energy consumption. Disclosure of Invention Technical Problem
[8] In view of the above-noted problems inherent in the prior art, it is an object of the present invention to provide a pipeline direct connection type electric boiler which is designed to independently heat up individual heating regions, thereby making it possible to selectively heat up only a desired heating region.
[9] Another object of the present invention is to provide a pipeline direct connection type electric boiler which is designed to heat up only a desired heating region, thereby minimizing energy consumption.
[10] A further object of the present invention is to provide a pipeline direct connection type electric boiler which is designed to introduce heating water of an elevated temperature heated by a heating device into a radiator pipeline with little loss of heat, thereby maximizing energy consumption efficiency. Technical Solution
[11] With these objects in view, there is provided a pipeline direct connection type electric boiler including: a radiator pipeline arranged in zigzags on a floor surface of a heating region; a heating tube directly connected to the radiator pipeline, the heating tube having a internal passageway through which heat carrier in the radiator pipeline can pass; a planar heater provided on an outer surface of the heating tube and adapted to, when supplied with an electric current, generate thermal energy to heat up the heat carrier passing through the internal passageway of the heating tube; a check valve installed in an inlet port of the heating tube for allowing the heat carrier in a single direction; and a radiator installed in a specified portion of the radiator pipeline for cooling down the heat carrier so that a difference in temperature can occur between the heat carrier flowing through different portions of the radiator pipeline.
[12] The radiator may be installed on an upstream side of the heating device to heat up the heat carrier flowing through the upstream side of the heating device.
[13] The radiator may be exposed to the air in the heating region to radiate heat of the heat carrier into the air.
Advantageous Effects
[14] The pipeline direct connection type electric boiler in accordance with the present invention is of a structure that a heating device for heating up heating water is directly connected to a radiator pipeline. This allows the heating water heated by the heating device to be directly introduced into the radiator pipeline. Thanks to this fact, it is possible to introduce the heating water into the radiator pipeline with little loss of heat and consequently to provide a maximized heating effect.
[15] Furthermore, the present electric boiler is capable of independently heating up individual heating regions on a region-by-region basis, because heating devices are installed in a one-to-one relationship with the radiator pipelines in the respective heating regions. This makes it possible to selectively heat up only a desired heating region, thereby minimizing energy consumption.
Brief Description of the Drawings [16] Fig. 1 is a pipeline diagram showing a configuration of a pipeline direct connection type electric boiler in accordance with the present invention. [17] Fig. 2 is a view showing the details of a heating device employed in the pipeline direct connection type electric boiler of the present invention. [18] Fig. 3 is a pipeline diagram showing a pipeline direct connection type electric boiler in accordance with another embodiment of the present invention.
Mode for the Invention [19] Hereinafter, preferred embodiments of a pipeline direct connection type electric boiler in accordance with the present invention will be described in detail with reference to the accompanying drawing. [20] Fig. 1 shows a configuration of a pipeline direct connection type electric boiler in accordance with the present invention and Fig. 2 illustrates the details of a heating device employed in the pipeline direct connection type electric boiler of the present invention. [21] The pipeline direct connection type electric boiler of the present invention includes a radiator device 10 that consists of a flat hot- water-circulating panel having a radiator pipeline 12 and is installed on a floor surface of a heating region A. The radiator pipeline 12 is of a closed loop type and is arranged within the panel in zigzags. The radiator pipeline 12 is made of a flexible material, e.g., synthetic resin, synthetic rubber or the like. If necessary, the radiator pipeline 12 may be constructed from a metallic material. [22] The radiator device 10 of this type allows heating water with thermal energy of an elevated temperature to circulate through the heating region A, whereby the thermal energy of the heating water is emitted to the heating region A to thereby heat up the same. [23] Although the radiator device 10 is constructed from the flat hot-water-circulating panel having the radiator pipeline 12 in the illustrated embodiment, it may be formed of only the radiator pipeline 12 if such a need arises. [24] Referring again to Fig. 1, the pipeline direct connection type electric boiler of the present invention includes a heating device 20 for heating up the heating water flowing through the radiator pipeline 12 of the radiator device 10. [25] As shown in Fig. 2, the heating device 20 includes a heating tube 22 installed on the radiator pipeline 12 and a planar heater 24 attached to an external surface of the heating tube 22.
[26] The heating tube 22 has an inlet port 22a communicating with one end of the radiator pipeline 12, an internal passageway 22b through which the heating water introduced from the inlet 22a flows, and an outlet port 22c for discharging the heating water in the internal passageway 22b to the other end of the radiator pipeline 12.
[27] The heating tube 22 is directly connected to the radiator pipeline 12 so that the heating water flowing through the radiator pipeline 12 can be introduced into the heating tube 22 and then flows through the internal passageway 22b. The heating tube 22 is preferably made of a material having a heat resistance and low expansion characteristics, e.g., a quartz tube or a ceramic tube.
[28] The planar heater 24 is one kind of resistors and can be formed into a thin film by coating a conductive material on the heating tube 22. A plurality of electrodes 26 for applying an electric current is attached to a surface of the planar heater 24 at a specified interval. Each of the electrodes 26 is formed into a ring shape to extend along an outer circumference of the heating tube 22 and is preferably made of silver.
[29] As an electric current is applied to the electrodes 26, the planar heater 24 generates heat of an elevated temperature to heat up the heating tube 22, whereby the heating water flowing through the internal passageway 22b of the heating tube 22 is heated to a high temperature.
[30] Referring again to Fig. 1, the pipeline direct connection type electric boiler of the present invention includes a pump 30 mounted to the radiator pipeline 12 and a control means 40 for controlling operations of the heating device 20 and the pump 30.
[31] The pump 30 is a means for circulating the heating water and is operated by an electric current to pump the heating water within the radiator pipeline 12. By the pumping operation of the pump 30, the heating water is forcibly circulated through the radiator pipeline 12.
[32] The control means 40 consists of a temperature sensor 42 for detecting the temperature of the heating water flowing through the radiator pipeline 12 and a controller 44 for controlling the heating device 20 and the pump 30 according to the temperature of the heating water detected by the temperature sensor 42.
[33] More specifically, the controller 44 is adapted to compare the temperature of the heating water inputted from the temperature sensor 42 with a predetermined reference temperature. If the temperature of the heating water is lower than the reference temperature, the controller 44 applies an electric current to the electrodes 26 of the heating device 20 to thereby operate the heating device 20. In contrast, if the temperature of the heating water is higher than the reference temperature, the controller 44 cuts off the electric current applied to the electrodes 26 of the heating device 20 to thereby stop the operation of the heating device 20. [34] In other words, the controller 44 serves to control the heating device 20 to accomplish the reference temperature which is preset by a user. As a result, the heating water flowing through the radiator pipeline 12 is kept at the reference temperature, which makes it possible to heat up the heating region A to a specified temperature.
[35] In addition, the controller 44 includes a plurality of buttons (not shown) with which the user can change the reference temperature and a timer (not shown) with which the user can preset the operating time of the heating device 20.
[36] Next, an exemplary operation of the present heating boiler configured as above will be described with reference to Fig. 1.
[37] First, the reference temperature is preset by use of the buttons of the controller 44.
The current temperature of the temperature sensor 42 is detected by the temperature sensor 42 and inputted to the controller 44.
[38] If the temperature of the heating water is lower than the reference temperature, the controller 44 applies an electric current to the planar heater 24 of the heating device 20 and the planar heater 24 generates heat of an elevated temperature to heat up the heating tube 22. The heating tube 22 heats up the heating water flowing through the internal passageway 22b thereof to produce hot heating water.
[39] The hot heating water heated in the heating tube 22 is circulated through the radiator pipeline 12 by the pumping action of the pump 30. The hot heating water circulating through the radiator pipeline 12 emits heat of an elevated temperature to heat up the heating region A.
[40] If the temperature of the heating water is higher than the reference temperature, the controller 44 cuts off the electric current applied to the heating device 20. In response, the heating device 20 stops heating up the heating water and, consequently, the heating water is prevented from being overheated to a temperature greater than the reference temperature. This makes it possible to keep constant the temperature of the heating region A.
[41] As described above, the pipeline direct connection type electric boiler of the present invention is of a structure that the heating device 20 for heating up the heating water is directly connected to the radiator pipeline 12. This allows the heating water heated by the heating device 20 to be directly introduced into the radiator pipeline 12. Thanks to this fact, it is possible to introduce the heating water into the radiator pipeline 12 with little loss of heat, consequently providing a maximized heating effect.
[42] Furthermore, the present electric boiler is capable of independently heating up the individual heating regions A on a region-by-region basis, because the heating devices 20 are installed in a one-to-one relationship with the radiator pipelines 12 in the respective heating regions A. This makes it possible to selectively heat up only a desired heating region, thereby minimizing energy consumption. [43] Turning to Fig. 3, there is shown a pipeline direct connection type electric boiler in accordance with another embodiment of the present invention. The electric boiler of this embodiment includes a radiator 50 as a means for circulating the heating water through the radiator pipeline 12.
[44] The radiator 50 is provided with a plurality of tubes (not shown) through which the heating water can pass. The radiator 50 is installed on an upstream side of the heating device 20 and exposed to the air so that it can radiate heat of the heating water into the air of the heating region A.
[45] The radiator 50 of this type serves to cool down the heating water flowing through a specified portion of the radiator pipeline 12. In particular, the radiator 50 cools down the heating water flowing through the upstream side of the heating device 20 (the lower portion in the drawings). This reduces the temperature and density of the heating water flowing through the upstream side of the heating device 20, thereby creating a difference in temperature and density between the heating water flowing through the upstream side of the heating device 20 and the heating water flowing through the downstream side thereof. Such a difference in temperature and density before and after the heating device 20 helps to assure smooth circulation of the heating water through the radiator pipeline 12.
[46] A check valve 52 is installed in an entrance port of the heating device 20. The check valve 52 allows the heating water passed through the radiator 50 to flow toward only the downstream side of the heating device 20 (the upper portion in the drawings) but prevents the heating water introduced into the heating tube 22 from flowing toward the upstream side of the heating device 20 (the lower portion in the drawings).
[47] The heating water introduced into the heating tube 22 of the heating device 20 is heated up by the planar heater 24 to have an elevated temperature and an increased pressure. The heating water thus heated tends to escape out of the heating tube 22 under the action of the increased pressure. However, the heating water is allowed to flow toward only the downstream side of the heating tube 22, because the flow of the heating water toward the upstream side is inhibited by means of the check valve 52.
[48] The heating water whose flow direction is restricted to the downstream side is introduced into the heating tube 22 through the radiator 50 and the check valve 52. Accordingly, the heating water in the radiator pipeline 12 flows only in the direction indicated by arrows in Fig. 3.
[49] Since the electric boiler of the present embodiment is of a structure that the heating water is circulated under the action of the check valve 52 and the radiator 50, there is no need, unlike the preceding embodiment, to employ a pump for forcibly circulating the heating water. This makes it possible to reduce energy consumption as far as possible, thereby providing an advantageous effect of low electricity consumption and high efficiency.
[50] Although the pipeline direct connection type electric boiler of the present invention is used to heat up an indoor area in the embodiments described and shown above, the present invention is not limited thereto. As an alternative example, the present electric boiler may be installed in roads, bridges, airport runways and so forth to keep the surfaces thereof against freezing.
[51] While preferred embodiments of the present invention have been described hereinabove, the present invention is not limited thereto. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention defined in the claims. Industrial Applicability
[52] The present invention can be applied to an electric boiler capable of selectively heating up only a desired heating region and directly introducing heating water of an elevated temperature into a radiator pipeline with little loss of heat.

Claims

Claims
[1] A pipeline direct connection type electric boiler, comprising: a radiator pipeline (12) arranged in zigzags on a floor surface of a heating region; a heating tube (22) directly connected to the radiator pipeline (12), the heating tube (22) having a internal passageway (22b) through which heat carrier in the radiator pipeline (12) can pass; a planar heater (24) provided on an outer surface of the heating tube (22) and adapted to, when supplied with an electric current, generate thermal energy to heat up the heat carrier passing through the internal passageway (22b) of the heating tube (22); a check valve (52) installed in an inlet port of the heating tube (22) for allowing the heat carrier in a single direction; and a radiator (50) installed in a specified portion of the radiator pipeline (12) for cooling down the heat carrier so that a difference in temperature can occur between the heat carrier flowing through different portions of the radiator pipeline (12).
[2] The pipeline direct connection type electric boiler as recited in claim 1, wherein the radiator (50) is installed on an upstream side of the heating device (20) to heat up the heat carrier flowing through the upstream side of the heating device (20).
[3] The pipeline direct connection type electric boiler as recited in claim 1 or 2, wherein the radiator (50) is exposed to the air in the heating region to radiate heat of the heat carrier into the air.
PCT/KR2007/002572 2006-05-29 2007-05-28 Electric boiler of direct connection type WO2007139327A1 (en)

Applications Claiming Priority (2)

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KR1020060048154A KR100754001B1 (en) 2006-05-29 2006-05-29 Electric boiler of direct connection type
KR10-2006-0048154 2006-05-29

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WO2007139327A1 true WO2007139327A1 (en) 2007-12-06

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Publication number Priority date Publication date Assignee Title
WO2022118078A1 (en) * 2020-12-04 2022-06-09 Reflexy Nederland B.V. Modular fluid heating device, heating system provided with such a fluid heating device

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
KR102289363B1 (en) * 2019-10-22 2021-08-19 최원근 Tap water cold / hot water management system

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JPS58120039A (en) * 1982-01-08 1983-07-16 Matsushita Electric Ind Co Ltd Water heater
US4563571A (en) * 1981-12-16 1986-01-07 Matsushita Electric Industrial Company, Limited Electric water heating device with decreased mineral scale deposition
KR19990080780A (en) * 1998-04-14 1999-11-15 김인수 Double pipe type vacuum tube electric instant hot water heater
KR20040110776A (en) * 2003-06-20 2004-12-31 박성돈 Electric boiler

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US4563571A (en) * 1981-12-16 1986-01-07 Matsushita Electric Industrial Company, Limited Electric water heating device with decreased mineral scale deposition
JPS58120039A (en) * 1982-01-08 1983-07-16 Matsushita Electric Ind Co Ltd Water heater
KR19990080780A (en) * 1998-04-14 1999-11-15 김인수 Double pipe type vacuum tube electric instant hot water heater
KR20040110776A (en) * 2003-06-20 2004-12-31 박성돈 Electric boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022118078A1 (en) * 2020-12-04 2022-06-09 Reflexy Nederland B.V. Modular fluid heating device, heating system provided with such a fluid heating device

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