KR20160034187A - Fluid heating device - Google Patents

Fluid heating device Download PDF

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Publication number
KR20160034187A
KR20160034187A KR1020150124195A KR20150124195A KR20160034187A KR 20160034187 A KR20160034187 A KR 20160034187A KR 1020150124195 A KR1020150124195 A KR 1020150124195A KR 20150124195 A KR20150124195 A KR 20150124195A KR 20160034187 A KR20160034187 A KR 20160034187A
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KR
South Korea
Prior art keywords
connecting member
conductor tube
electrical connecting
fluid
heating
Prior art date
Application number
KR1020150124195A
Other languages
Korean (ko)
Inventor
도루 도노무라
야스히로 후지모토
사치오 다마키
Original Assignee
토쿠덴 가부시기가이샤
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 토쿠덴 가부시기가이샤 filed Critical 토쿠덴 가부시기가이샤
Publication of KR20160034187A publication Critical patent/KR20160034187A/en

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    • 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
    • F24H1/121—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 using electric energy supply
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/34—Heating of pipes or pipe systems using electric, magnetic or electromagnetic fields, e.g. using induction, dielectric or microwave heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/281—Methods of steam generation characterised by form of heating method in boilers heated electrically other than by electrical resistances or electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/16—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
    • F22G1/165—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil by electricity
    • 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
    • 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
    • F24H1/16—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 helically or spirally coiled
    • F24H1/162—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 helically or spirally coiled using electrical energy supply
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment
    • 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
    • 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
    • F24H2250/08—Induction

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Induction Heating (AREA)
  • Control Of Resistance Heating (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Road Paving Structures (AREA)

Abstract

Provided in the present invention is a fluid heating device (100), which has no concerns about the damage or the like, even if the modification is generated by heating a conductive pipe (1). Specifically, the present invention is arranged with an electrical access member (2) constituted of a short circuit by electrically accessing consumed points of the conductive pipe (1), and uses the modification with respect to the temperature change of the conductive pipe (1), as a corresponding electrical access member (2).

Description

FLUID HEATING DEVICE

The present invention relates to a fluid heating apparatus which heats a fluid that has passed through a conductor pipe by heating a conductive pipe wound in a spiral shape by induction heating or energization .

Conventionally, in this type of fluid heating apparatus, as shown in Patent Document 1, conductor tubes adjacent to each other in a spirally wound conductor tube forming a secondary coil are electrically connected to each other through electric wires extending in the axial direction of the spiral It is known that a short circuit is formed by electrical connection by welding or the like with a connecting member to reduce the electrical reactance to improve the heating efficiency.

When the helical conductor tube is subjected to induction heating or conduction heating, a larger current flows to the inner circumferential side of the conductor tube having a shorter length and a lower electrical resistance value than the outer circumferential side, so that the inner circumferential side becomes higher in temperature than the outer circumferential side . Therefore, thermal expansion of the inner circumferential side of the conductor tube is larger than that of the outer circumferential side, and the arrangement of the tubes in the direction of unwinding of the helical tube is changed.

Further, since the outlet side of the fluid becomes higher in temperature than the inlet side, the diameter of the winding on the outlet side becomes larger, and the shape when viewed from the front of the helical tube is deformed into a trapezoidal shape.

However, when the electrical connecting member is fixed between the required positions of the conductor tube as in the prior art, a large stress is generated when the conductor tube is deformed as described above, and the conductor tube, the electrical connecting member, There is a possibility that fatigue accumulates or breaks at a fixed location with the vehicle.

Patent Document 1: JP-A-2010-71624

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a fluid heating apparatus of this type, in which electrical connection between required portions of a conductor tube is made by electrical connection, The present invention has been made in view of the above problems, and an object thereof is to provide a fluid heating apparatus which is less susceptible to breakage even when deformation due to heating occurs.

That is, the fluid heating apparatus according to the present invention heats a fluid that has flowed through the conductor tube by induction heating or conduction heating of a conductor tube spirally wound, And an electrical connecting member electrically connecting the required portions of the conductor tube to each other to constitute a short circuit, wherein the electrical connecting member is made of a material that can be deformed in accordance with a change in temperature of the conductor tube .

More specifically, the electrical connecting member is mounted on the surface of the conductor tube along the axial direction of the spiral.

It is preferable that the cross-sectional area and the number of connection of the electrical connecting member are set on the basis of the value of the current flowing through the electrical connecting member for each mounting position. The value of the current flowing through each of the electrical connecting members largely differs depending on the state of magnetic coupling with the input-side winding and the difference in impedance. By setting the cross-sectional area and the number of connections of the connecting member in accordance with the current value, it is possible to prevent excessive heating, and to avoid selection of excessive cross-sectional area and number of connections.

A preferable example of the shape of the electrical connecting member is one formed by using a metal net. Such a structure can easily deform not only in the longitudinal direction but also in the transverse direction, so that it can sufficiently cope with the unfavorable deformation of the conductor pipe.

As another preferred form of the electrical connecting member, the electrical connecting member may be formed by using a metal plate having its intermediate region bent. With such a structure, it is possible to facilitate the operation and ensure a large conductive cross-sectional area.

In the case where the conductor tube heats the fluid to generate the superheated steam, the effect of the present invention becomes particularly conspicuous because the temperature rise is large and the deformation of the conductor tube is large.

According to the present invention configured as described above, since the electrical connecting member deforms in accordance with the deformation of the conductor tube due to the temperature change, fatigue accumulates on the conductor tube, the electrical connecting member, or the fixing point between the conductor tube and the electrical connecting member And as a result, it can be prevented from being damaged.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view mainly showing a conductor tube of a fluid heating apparatus according to an embodiment of the present invention; Fig.
2 is a side view mainly showing a conductor tube according to one embodiment of the present invention.
3 is a front view, a bottom view, and a side view showing an electrical connecting member according to an embodiment of the present invention;
4 is a front view, a bottom view, and a side view showing an electrical connecting member in another embodiment of the present invention;
5 is a graph showing an experimental result of a current value flowing through an electrical connecting member for each mounting location.

Hereinafter, one embodiment of the fluid heating apparatus 100 according to the present invention will be described with reference to the drawings.

The fluid heating apparatus 100 includes a primary coil (not shown) wound (wound) along an iron core and a secondary coil (not shown) formed between an outer circumference or an inner circumference of the primary coil or a primary coil, And a secondary coil (see FIGS. 1 and 2) made of a helical conductor tube 1 which is wound around the primary coil. The conductor tube 1 constituting the secondary coil (Induction) heat of the conductor tube 1 to heat the fluid flowing inside. In addition, an induction (introduction) port is formed at one end of the conductor tube 1 constituting the secondary coil, to which external piping for supplying the fluid to the secondary coil is connected, and at the other end of the conductor tube And a lead-out port to which an external pipe for leading the heated fluid to the outside is connected is formed.

The fluid heating apparatus 100 here is for heating water as a fluid and heating the water in the conductor pipe 1 to generate superheated steam which generates superheated steam at a temperature higher than 100 ° C (200 ° C to 2000 ° C) But the heating temperature and the fluid to be heated are not limited thereto. For example, the saturated steam generated externally may be heated in the conductor tube 1 to generate superheated steam.

Incidentally, in this embodiment, as shown in Fig. 2, the electrical connecting member 2 constituting the short circuit is electrically connected to the required portions of the conductor tube 1.

As shown in Fig. 3, the electrical connecting member 2 has a long metal shape. The electrical connecting member 2 has a pair of connecting terminal plates (not shown) electrically and mechanically fixed to the conductor tube 1 by welding or the like 21, and a metal net 22 laid between these connecting terminal plates 21. As shown in Fig. The pair of connecting terminal plates 21 are electrically and mechanically fixed to the outer peripheral portion of the secondary coil in the conductor tube 1 by welding or the like. The metal net 22 expands and contracts in accordance with the expansion and contraction of the distance between the pair of connection terminal plates 21. In the present embodiment, the metal net 22 has a band shape bent in the middle (middle) (Three in Fig. 3) are laid between them.

The electrical connecting member 2 is mounted on the surface of the conductor tube 1 in a plurality of (three or more in this case) in a state in which the extending direction thereof is parallel to the axial direction of the spiral. It is preferable that the plurality of electric connecting members 2 are mounted discretely on the entire outer circumference of the secondary coil at intervals. In Fig. 2, two or three electrical connecting members 2 are mounted in a straight line along the axial direction of the spiral. The connecting terminal plate 21 of each electrical connecting member 2 is not an adjacent conductor tube element (a portion constituting one turn of the spiral in the conductor tube 1) And are electrically connected to each other.

Examples of the material for the connection terminal plate 21 and the metal net 22 include an austenitic stainless steel such as SUS304 and SUS316L which has heat resistance and is not easily oxidized, and an INCONEL-alloy (JIS alloy number NCF601, etc.).

However, in such a case, since the electrical connecting member 2 is deformed in accordance with a change in temperature of the conductor tube 1, the conductor tube 1, the electrical connecting member 2 itself, or the conductor tube 1 and the electric connecting member 2, it is possible to prevent the occurrence of fatigue and, as a result, the damage.

In addition, since the electrical connection member 2 uses the metal net 22 which is easily deformable not only in the longitudinal direction but also in the transverse direction, it is possible to sufficiently cope with the unfavorable deformation of the conductor tube 1. [

In addition, in this embodiment, since the superheated steam is generated, the heating temperature is high and the deformation of the conductor tube 1 is also large, so that the above-mentioned effect becomes remarkable.

The present invention is not limited to the above embodiment.

For example, as shown in Fig. 4, the electrical connecting member 2 may be formed by using a metal plate 23 that has been subjected to a bending process between the connecting terminal plates 21. As the metal plate subjected to the bending process, a metal plate subjected to a bending process or a metal plate subjected to a curving process may be considered. In this case, it is possible to provide deformability and to secure a large conductive cross-sectional area. The material is preferably the same as the above metal net.

It is preferable that the cross-sectional area of each of the electric connecting members and the number of the connecting members are set on the basis of the value of the current flowing through the electric connecting member for each portion to be mounted. Fig. 5 shows an example of the current value at the time of applying the rated voltage value for each of the electrical connecting members (a to k) shown in Fig. The value of the current flowing through each of the electrical connecting members differs greatly depending on the magnetic coupling state with the input-side winding and the difference in impedance, as shown in Fig. By setting the cross-sectional area and the number of connections of the connecting member in accordance with the current value, it is possible to prevent excessive heating and to avoid selection of excessive cross-sectional area and number of connections.

Further, although the electrical connecting member of the above-described embodiment is mounted along the axial direction of the spiral in a posture in which the extending direction thereof is parallel to the axial direction of the spiral, Or may be mounted in an offset position from the axial direction. For example, the electrical connecting member may be tilted at an angle formed by the drawing direction with the axial direction of the spiral within a range of, for example, +/- 45 degrees (more preferably within a range of +/- 10 degrees).

Further, as the heating method of the fluid heating device, a method of heating by applying electric current directly to a conductor tube wound in a spiral shape other than the induction heating method as in the above-described embodiment may be employed .

It is needless to say that the present invention is not limited to the above-described embodiment, and that various modifications are possible without departing from the spirit of the present invention.

100 - Fluid heating device 1 - Conductor tube
2 - electrical connection member 22 - metal mesh
23 - metal plate

Claims (6)

A fluid heating apparatus for heating fluid flowing through a conductor pipe by heating a conductor pipe wound in a spiral shape by induction heating or energization,
And an electrical connecting member electrically connecting the required portions of the conductor tube to each other to constitute a short circuit, wherein the electrical connecting member is made of a material that can be deformed in accordance with a change in temperature of the conductor tube And the fluid is heated. The method according to claim 1,
Wherein the electrical connecting member is mounted on the conductor tube along the axial direction of the spiral. The method according to claim 1,
Wherein the cross-sectional area and the number of connection of said electric connection member are set based on a value of a current flowing through said electric connection member for each portion to be mounted. The method according to claim 1,
Wherein the electrical connecting member is formed using a metal net. The method according to claim 1,
Wherein the electrical connecting member is formed by using a metal plate subjected to a bending process in an intermediate region thereof. The method according to claim 1,
Wherein the conductor tube heats the fluid to generate superheated steam.
KR1020150124195A 2014-09-19 2015-09-02 Fluid heating device KR20160034187A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014192018 2014-09-19
JPJP-P-2014-192018 2014-09-19
JPJP-P-2014-217984 2014-10-27
JP2014217984A JP6290067B2 (en) 2014-09-19 2014-10-27 Fluid heating device

Publications (1)

Publication Number Publication Date
KR20160034187A true KR20160034187A (en) 2016-03-29

Family

ID=55805265

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150124195A KR20160034187A (en) 2014-09-19 2015-09-02 Fluid heating device

Country Status (5)

Country Link
JP (1) JP6290067B2 (en)
KR (1) KR20160034187A (en)
CN (1) CN205245118U (en)
HK (1) HK1218324A1 (en)
TW (1) TWI669472B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444141B (en) 2014-09-19 2019-08-06 特电株式会社 Fluid heater
CN109973744B (en) * 2019-03-29 2020-10-09 盐城市龙科电器有限公司 Electromagnetic induction heating device for pipeline petroleum transportation in cold region

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3587030A (en) * 1969-03-17 1971-06-22 Carborundum Co Terminal clamp
JPH04230987A (en) * 1990-06-18 1992-08-19 Nikko Kk Electromagnetic induction heater
JP3454940B2 (en) * 1994-11-17 2003-10-06 株式会社東芝 Electromagnetic pump
GB9517643D0 (en) * 1995-08-30 1995-11-01 Isis Innovation Heating element
JPH09178103A (en) * 1995-12-21 1997-07-11 Miura Co Ltd Induction type super heated steam generator
JP2010071624A (en) * 2008-09-22 2010-04-02 Tokuden Co Ltd Fluid heating device
JP2012052707A (en) * 2010-08-31 2012-03-15 Yasutane Takato Fluid heating device
JP5691830B2 (en) * 2011-05-18 2015-04-01 富士電機株式会社 Induction heating steam generator

Also Published As

Publication number Publication date
JP2016065706A (en) 2016-04-28
TWI669472B (en) 2019-08-21
CN205245118U (en) 2016-05-18
TW201612476A (en) 2016-04-01
JP6290067B2 (en) 2018-03-07
HK1218324A1 (en) 2017-02-10

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