US3854032A - Superheated electric arc steam generator - Google Patents

Superheated electric arc steam generator Download PDF

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US3854032A
US3854032A US42770073A US3854032A US 3854032 A US3854032 A US 3854032A US 42770073 A US42770073 A US 42770073A US 3854032 A US3854032 A US 3854032A
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steam
chamber
arc
arc chamber
water
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J Cooper
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J Cooper
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00Methods of steam generation characterised by form of heating method
    • F22B1/28Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/281Methods of steam generation characterised by form of heating method in boilers heated electrically other than by electrical resistances or electrodes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B7/00Heating by electric discharge
    • H05B7/18Heating by arc discharge

Abstract

An arc producing apparatus, such as a plasma-jet, for generating superheated steam; comprising, an arc chamber axially aligned with a steam chamber so that water flowing through a water jacket thereof absorbs heat from the arc and is changed into steam. The steam is conducted from the water jacket of the arc producing apparatus into the steam chamber where the steam is superheated as it flows from the interior of the steam chamber, back up into the arc chamber, and then back into and out of the steam chamber, with the steam assuming a countercurrent spiral flow path.

Description

United States Patent 1191 Cooper 1 Dec. 10, 1974 [54] SUPERHEATED ELECTRIC ARC STEAM 3,428,783 2/1969 Niles 219/401 x GENERATOR 3,487,423 12/1969 White 60/108 3,708,419 1/1973 Low et al 204/328 Inventor! J y p 3020 4th 3,712,996 1/1973 Kugler 313/231 Odessa, Tex. 79761 3,718,805 2/1973 Posey 219/305 [22] Filed. Dec. 1973 Primary Examiner-Volodymyr Y. Mayewsky 1 1 pp 427,700 Attorney, Agent, or Firm-Marcus L. Bates [52] 11.8. C1. 219/383, 60/108 S, 315/111, [57] ABSTRACT 219/121 R1 219/305 219/315 219/401 An are producing apparatus, such as a plasma-jet, for [51] Int. Cl. H0511 7/18 generating superheated Steam; comprising an arc [58] Field of Search 219/121 305, chamber axially aligned with a steam chamber so that 219/316 401; 313/231; 315/111; water flowing through a water jacket thereof absorbs 204/328; 60/108 heat from the arc and is changed into steam. The steam is conducted from the water jacket of the arc [56] References C'ted producing apparatus into the steam chamber where UNITED STATES PATENTS the steam is superheated as it flows from the interior 591,783 10/1897 McClellan 219/315 of the Steam Chamber, back p into the arc chamber. 915,526 3/1909 Wonner 219/316 x and then back into and out of the steam chamber, 1,368,212 2/1921 Ravel et al 219/383 X with the steam assuming a countercurrent spiral flow 1,632,821 6/1927 Cote 219/383 path 2,294,578 9/1942 Shapiro et al...... 1. 219/305 X 2,775,683 12/1956 1416151 219 305 x 5 Claims, 6 w g Figures PATENTEL BEN (H974 'FIGI FIG. 5

BACKGROUND OF THE INVENTION The use of an electric are for steam generation is old as evidenced by the patent to White, US. Pat. No. 3,487,423. The Kugler US. Pat. No. 3,712,996 teaches the use of gases employed in an irregular arc chamber for stabilization of the arc in a plasma generator. Reference is made to these two patents for further background of the present invention.

Applicant has discovered that the action of an are within an arc chamber causes the gases therein to assume a countercurrent flow path when the arc producing apparatus is arranged in a particular manner. This arrangement can be used to advantage in superheating steam. Therefore, the present invention takes advantage of this phenomenon in combination with an arc and steam chamber of a particular configuration.

SUMMARY OF THE INVENTION This invention relates to a steam generation apparatus comprising a longitudinally extending arc chamber having an electrode at one end thereof and connected to a steam chamber at the opposed end. The electrode is insulated from the arc chamber while an annular water jacket is concentrically formed'thereabout. The steam chamber .is axially aligned and flow connected with the arc chamber within which the electrode is disposed.

The annular water jacket is concentrically formed about the arc chamber and provided with an inlet and outlet so that water flowing therethrough is heated into steam. The steam is conducted into a tangential inlet formed in the steam chamber to enable the steam to flow back into the arc chamber and then return'into the steam chamber in a countercurrent spiral relationship induced by the action of the are. This novel action causes the vaporized water to be heated to extremely high temperatures. 7

Therefore, a primary object of this invention is the provision of a new method and apparatus for generating superheated steam.

Another object of the invention is to provide acombination of an arc chamber and a steam chamber for utilizing the energy of an electric are for generation of superheated steam.

A further object of this invention is to disclose and provide a steam generation apparatus which utilizes the electric arc for imparting high temperatures into steam.

' the invention will become readily apparent to those skilled inthe art upon reading the following detailed description and claims and by referring to the accompanying drawings.

The above objects are attained, in accordance with the present invention by the provision of a combination of elements which are fabricated in a manner substantially as described in the above abstract and summary.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of one form of the present invention;

FIG. 2 is a cross-sectional view taken along line 22 of FIG. 1;

FIG. 3 is an end view of the apparatus disclosed in FIG. 1;

FIG. 4 is a detail of part of the apparatus disclosed in FIG. 5;

FIG. 5 is a cross-sectional view of another form of the present invention, and;

FIG. 6 is a part diagrammatical, part schematical representation of the operation of the embodiment of the invention disclosed in FIG. 5.

DETAILED lifisciifi fiofi'ofiTfiia EMBODIMENTS In FIGS. 1 3, the present invention is generally indicated by the arrow at numeral 10 and comprises a main body 12 which reduces in diameter at 14 to form a holder for an electrode 16. A marginal length of the electrode is surrounded by a heat resistant insulator 18, such as ceremic insulation, so that the electrode is electrically insulated in sealed relationship from the remaining structure.

A metal are chamber 20 is provided with an annulus 22 of a sufficient area which will provide adequate insulation to prevent inadvertent arcing occurring thereacross. A marginal end portion 24 of the electrode is received within the arc chamber. The interial wall 26 of the arc chamber is spaced from the electrode and from the outer shell 28, with the spacing of walls 26 and 28 being sufficient for the formation of a water jacket 30 therebetween. A spiral coolant conducting member 32 forms the water jacket into a spiraled configuration for imparting a high velocity spiraled flow path into any water flowing therethrough, thereby increasing the heat conductivity therebetween.

Annular member 34 is a part of the member which forms the before mentioned inner surface area of the arc chamber. The last named member is provided with the illustrated threaded areas disclosed at 36, 38, and 40, for engaging threaded complementary members. A removable threaded plug 42 forms a closure member for the remaining end of the arc chamber with the interior surface of the plug being provided with the illustrated concave surface seen at 44.

Water inlet 46 is in fluid communication with steam outlet 48 by means of the spiral formed annular water jacket which is concentrically arranged about the arc chamber.

As schematically illustrated in FIG. 1, electrical conduit 50 and 52 provides a difference in potential across the electrode and the arc chamber so that closure of the illustrated switch enables the illustrated source of electrical energy to provide an are between the end of the electrode and the interior surface of the arc chamber. For convenience, a high frequency current can be generated at 54 for initiating the arc.

FIG. 4 sets forth the details of a removable liner for use in conjunction with the embodiment of the invention disclosed in FIG. 5. The liner 56 is provided with a circumferentially extending enlargement 58 which is received within a complimentary groove in the illustrated manner of FIG. 5.

The spiral body 132 is comprised of an outer wall formed into a continuous spiral member having a pitch which provides a continuous space 130 between each convolution. The outer extremity of the spiral is threaded and provided with a diameter which preferably is equivalent to the diameter measured at 136 and 140. Interior wall surface 138 forms the outlet of the arc chamber, and is provided with the illustrated threaded surface for removably receiving a steam chamber, as will be more fully explained later on in this disclosure.

In FIG. 5 the metal are chamber 112 is provided with the insert 56 of FIG. 4, with a steam chamber 70 having a throat 72 communicating the interior of the arc chamber with the interior 74 of the steam chamber. The exterior of the throat threadedly engages threads 138 of the insert. A plug 76 forms a closure member for the steam chamber. Steam flow conduit 60 interconnects vapor outlet 148 of the water jacket with the tangential vapor inlet port 62 of the steam chamber. Numeral 64 is intended to indicate that conduit 62 is placed tangentially with respect to the interior surface of the steam chamber. Steam outlet 68 provides a source of superheated steam when the apparatus is in proper operation.

In the past schematical, part diagrammatical illustration of FIG. 6, the various arrows associated therewith illustrate the flow through the apparatus. In particular, coolant, such as water, enters the water jacket at 146 and exits at l48 as steam. The steam enters the steam chamber 74 by means of the tangential inlet, whereupon the steam flows in a spiral path as illustrated at 78 and 80 as it continues through the throat and into the arc chamber. The spiral flow continues about the annulus formed between the electrode and the inner wall surface of the arc chamber, whereupon the spiral path reverses itself and flows in countercurrent relationship back through the throat and back through the outlets 68, as noted at 82 and 84. It may be said that a vortex is formed.

In operation of the embodiment disclosed in FIGS. 1 3, a suitable source of distilled water flows into inlet 46, about the spiraled grooves at 30, and through outlet 48, thereby removing heat from the apparatus. In order to initiate the arc, the end 24 of the electrode is moved into close proximity of the concave surface 44, the high frequency generator 54 is actuated, thereby enabling an arc to be initiated as it travels along the ionized path formed by the generator. The flow of water through the water jacket is regulated so that steam of low quality is formed at the outlet 48.

The gaseous atmosphere contained within the arc chamber will soon change into nitrogen and CO as the available oxygen reacts with the electrodes to form an oxide, thereby leaving a nitrogen atmosphere within the arc chamber.

The operation of the embodiment disclosed in FIGS. Sand 6 is carried out by establishing a flow of water into the spiral water jacket so that low quality steam emerges at the vapor outlet 148. The steam is conducted into the tangential inlet 62 where it follows a spiral flow path 80 back up into the arc chamber, where the flow reverses itself, and flows back through the imaginary core, much like the action of a cyclone separator, whereupon the superheated steam emerges at 84 and 68. Those skilled in the art will appreciate that the high velocity steam flow path at stabilizes the arc and enables the apparatus to operate at lower voltage than would otherwise be possible.

The materials of construction of the steam and arc chamber can be selected from known materials, depending upon the outlet temperature of the superheated steam. For example, it is possible to select flow rates and powerinputs of a magnitude which brings about disassociation of the hydrogen and oxygen atoms of the water molecule.

In domestic water heating systems, a tank of water is heated to the desired temperature, and unless the heated water is used immediately, the temperature thereof begins to drop because of conduction and radiation heat losses, until the thermostat is activated, whereupon the water is reheated. During periods of low hot water demand, the same water may be reheated many times, which amounts to a waste of energy.

The superheated steam generator as seen in FIG. 1 can be used on reduced levels to provide an efficient water heater which has none of the flue losses associated with gas or oil water heaters, and practically no loss from conduction or radiation. Because of its small physical size to power ratio, the generator is almost instantaneous in operation and requires that no water be stored in the device. The power requirements can be regulated to suit the demand with ordinary power regulating systems, and the ability to utilize the heat generated by a power supply and the other components through the expedient of water cooling makes the device in many instances much more efficient than any domestic water heater presently in use.

An alternate method of starting the arc can be carried out as follows:

A heavy, relatively non-reactive substance with a low boiling point, such as lead or mercury, is placed within the arc chamber. The chamber is then filled with an inert gas at an appropriate pressure so that the gas will partially ionize at the normal open circuit potential of "the power supply.

When power is applied, the inert gas will ionize and begin to conduct, generating enough heat to vaporize some of the heavy metal, thus releasing a cloud of metal atoms. This action causes an increase in pressure which causes a heavier current flow, which in turn causes an increase in heat, with this reaction continuing until a stable operating condition is achieved.

When the power is removed, the metal vapors cool and condense on the chamber walls, causing a reduction in pressure equivalent to the starting level, whereupon the inert gas may again be re-ionized to commence the process, thus providing for automatic arc ignition.

I claim:

1. Steam generation apparatus comprising a longitudinally extending metal are chamber having opposed ends, a closure means in the form of an electrode holder at one end thereof; an electrode supportingly received by said electrode holder and having. a marginal end portion thereof extending into the space enclosed by saidarc chamber; means electrically insulatiing said electrode from said are chamber;

an annular water jacket concentrically formed about said are chamber, a water inlet and a steam outlet spaced from one another and connected in fluid flow relationship to said water jacket;

electric circuit means including an electric source of energy for causing an arc to occur between said electrode and the interior wall surface of said arc chamber, to thereby generate heat which is removed by water which may be circulating through the water jacket;

a steam chamber having opposed ends spaced from one another, a closure means at one end of said steam chamber, the remaining end of said steam chamber being sealed to and in open communication with the remaining end of said are chamber;

said steam chamber having a steam inlet port and a steam outlet port, conduit means flow connecting said steam inlet port to said steam outlet;

so that water flows into said water inlet, changes into steam and flows through said inlet port into said steam chamber where the steam is superheated and flows through said steam outlet port.

2. The apparatus of claim 1 wherein said inlet port is arranged tangentially respective to the interior of the steam chamber to thereby impart a spiral flow path into the steam which flows into the steam chamber.

3. The apparatus of claim 1 wherein said are chamber and said steam chamber are axially aligned and conflowing through said water jacket.

5. The apparatus of claim 1 and further including a throat interconnecting said are chamber and said steam chamber, said throat having a reduced cross-sectional area relative to the cross-sectional area of the arc chamber and the steam chamber, the inlet port of said steam chamber being arranged tangentially with respect to the inside surface thereof; the steam outlet being arranged perpendicular with respect to the longitudinal central axis of the steam and arc chamber, and;

said water jacket being made into a spiraled annulus circumferentially disposed about said arc chamber to thereby enhance the heat transfer between the arc chamber and any water flowing through the water jacket.

Claims (5)

1. Steam generation apparatus comprising a longitudinally extending metal arc chamber having opposed ends, a closure means in the form of an electrode holder at one end thereof; an electrode supportingly received by said electrode holder and having a marginal end portion thereof extending into the space enclosed by said arc chamber; means electrically insulating said electrode from said arc chamber; an annular water jacket concentrically formed about said arc chamber, a water inlet and a steam outlet spaced from one another and connected in fluid flow relationship to said water jacket; electric circuit means including an electric source of energy for causing an arc to occur between said electrode and the interior wall surface of said arc chamber, to thereby generate heat which is removed by water which may be circulating through the water jacket; a steam chamber having opposed ends spaced from one another, a closure means at one end of said steam chamber, the remaining end of said steam chamber being sealed to and in open communication with the remaining end of said arc chamber; said steam chamber having a steam inlet port and a steam outlet port, conduit means flow connecting said steam inlet port to said steam outlet; so that water flows into said water inlet, changes into steam and flows through said inlet port into said steam chamber where the steam is superheated and flows through said steam outlet port.
2. The apparatus of claim 1 wherein said inlet port is arranged tangentially respective to the interior of the steam chamber to thereby impart a spiral flow path into the steam which flows into the steam chamber.
3. The apparatus of claim 1 wherein said arc chamber and said steam chamber are axially aligned and connected together by a throat of reduced diameter respective to the inside diameter of said arc chamber and said steam chamber.
4. The apparatus of claim 1 wherein said water jacket is made into a spiraled annulus circumferentially disposed about said arc chamber to thereby enhance the heat transfer between the arc chamber and any water flowing through said water jacket.
5. The apparatus of claim 1 and further including a throat interconnecting said arc chamber and said steam chamber, said throat having a reduced cross-sectional area relative to the cross-sectional area of the arc chamber and the steam chamber, the inlet port of said steam chamber being arRanged tangentially with respect to the inside surface thereof; the steam outlet being arranged perpendicular with respect to the longitudinal central axis of the steam and arc chamber, and; said water jacket being made into a spiraled annulus circumferentially disposed about said arc chamber to thereby enhance the heat transfer between the arc chamber and any water flowing through the water jacket.
US3854032A 1973-12-26 1973-12-26 Superheated electric arc steam generator Expired - Lifetime US3854032A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650956A (en) * 1984-12-07 1987-03-17 L'air Liquide Plasma arc forming process and device
US4850188A (en) * 1981-07-10 1989-07-25 Testone Enterprises, Inc. Ionized gas energy cell
EP0359872A1 (en) * 1987-03-23 1990-03-28 Sam L. Leach Steam generator
US5523550A (en) * 1992-01-06 1996-06-04 Kimura; Todd T. Capacitive induction heating method and apparatus for the production for instant hot water and steam
US6094523A (en) * 1995-06-07 2000-07-25 American Sterilizer Company Integral flash steam generator
US6157774A (en) * 1997-05-16 2000-12-05 Tokyo Electron Limited Vapor generating method and apparatus using same
US6635149B1 (en) * 2000-10-26 2003-10-21 Norman Campbell Water purification system
US20040237529A1 (en) * 2002-02-25 2004-12-02 Da Silva Elson Dias Methods and systems for reversibly exchanging energy between inertial and rotating forces
US20070089651A1 (en) * 2005-10-11 2007-04-26 Alok Pandey Electrically fired steam locomotive
US20080053383A1 (en) * 2006-09-06 2008-03-06 Alan Varacins Flash steam generator
US20080089676A1 (en) * 2002-07-26 2008-04-17 Klaus Schubert Microstructured apparatus for heating a fluid
US20080193112A1 (en) * 2007-02-14 2008-08-14 Battelle Memorial Institute Apparatus for Vaporization of Liquid
US20090304372A1 (en) * 2008-06-09 2009-12-10 Leister Process Technologies Electrical resistance heating element for a heating device for heating a flowing gaseous medium
US20100329652A1 (en) * 2008-02-01 2010-12-30 Isis Innovation Ltd. Electricity generator
US20110059409A1 (en) * 2007-02-14 2011-03-10 Battelle Memorial Institute Liquid Fuel Vaporizer and Combustion Chamber Having an Adjustable Thermal Conductor
US20110280553A1 (en) * 2010-05-17 2011-11-17 Zweita International Co., Ltd. Steam generator
US20120100497A1 (en) * 2009-06-23 2012-04-26 Sung Ho Joo Burner using plasma
US20120328271A1 (en) * 2011-06-24 2012-12-27 Yuan Kwang-Tong Steam generator
US8724978B2 (en) * 2012-05-08 2014-05-13 Philtech, Inc. Fluid heating-cooling cylinder device
US20140261700A1 (en) * 2013-03-15 2014-09-18 Peter Klein High thermal transfer flow-through heat exchanger
US20150219361A1 (en) * 2012-08-16 2015-08-06 Top Electric Appliances Industrial Ltd Device for heating and/or vaporizing a fluid such as water
US20160178235A1 (en) * 2014-12-22 2016-06-23 Horiba Stec, Co., Ltd. Fluid heater
US9618196B2 (en) * 2015-01-08 2017-04-11 Dongguan Pheaton Electronic Technology Co., Ltd. Steam generator

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US591783A (en) * 1897-10-12 mcclellan
US915526A (en) * 1908-05-25 1909-03-16 Mearl E Kunkel Electric-arc steam-generator.
US1368212A (en) * 1921-02-08 revel and a
US1632821A (en) * 1923-04-30 1927-06-21 Cote Alfred Electric water heater
US2294578A (en) * 1941-08-09 1942-09-01 Shapiro Steam generator for steaming appliances
US2775683A (en) * 1954-07-16 1956-12-25 Dole Refrigerating Co Heat exchangers for vaporizing liquid refrigerant
US3428783A (en) * 1967-02-27 1969-02-18 Vergil A Niles Pressure cooking apparatus
US3487423A (en) * 1968-07-11 1969-12-30 John B White Method and apparatus for producing steam
US3708419A (en) * 1970-11-06 1973-01-02 Nasa Self-cycling fluid heater
US3712996A (en) * 1969-06-10 1973-01-23 Lonza Ag Stabilization of plasma generators
US3718805A (en) * 1971-01-13 1973-02-27 E Posey Heated fluid gun

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US591783A (en) * 1897-10-12 mcclellan
US1368212A (en) * 1921-02-08 revel and a
US915526A (en) * 1908-05-25 1909-03-16 Mearl E Kunkel Electric-arc steam-generator.
US1632821A (en) * 1923-04-30 1927-06-21 Cote Alfred Electric water heater
US2294578A (en) * 1941-08-09 1942-09-01 Shapiro Steam generator for steaming appliances
US2775683A (en) * 1954-07-16 1956-12-25 Dole Refrigerating Co Heat exchangers for vaporizing liquid refrigerant
US3428783A (en) * 1967-02-27 1969-02-18 Vergil A Niles Pressure cooking apparatus
US3487423A (en) * 1968-07-11 1969-12-30 John B White Method and apparatus for producing steam
US3712996A (en) * 1969-06-10 1973-01-23 Lonza Ag Stabilization of plasma generators
US3708419A (en) * 1970-11-06 1973-01-02 Nasa Self-cycling fluid heater
US3718805A (en) * 1971-01-13 1973-02-27 E Posey Heated fluid gun

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4850188A (en) * 1981-07-10 1989-07-25 Testone Enterprises, Inc. Ionized gas energy cell
US4650956A (en) * 1984-12-07 1987-03-17 L'air Liquide Plasma arc forming process and device
EP0359872A1 (en) * 1987-03-23 1990-03-28 Sam L. Leach Steam generator
US5523550A (en) * 1992-01-06 1996-06-04 Kimura; Todd T. Capacitive induction heating method and apparatus for the production for instant hot water and steam
US6094523A (en) * 1995-06-07 2000-07-25 American Sterilizer Company Integral flash steam generator
US6157774A (en) * 1997-05-16 2000-12-05 Tokyo Electron Limited Vapor generating method and apparatus using same
US6635149B1 (en) * 2000-10-26 2003-10-21 Norman Campbell Water purification system
US20040237529A1 (en) * 2002-02-25 2004-12-02 Da Silva Elson Dias Methods and systems for reversibly exchanging energy between inertial and rotating forces
US20080089676A1 (en) * 2002-07-26 2008-04-17 Klaus Schubert Microstructured apparatus for heating a fluid
US7756404B2 (en) * 2002-07-26 2010-07-13 Forschungszenlrum Karlsruhe Gmbh Microstructured apparatus for heating a fluid
US20070089651A1 (en) * 2005-10-11 2007-04-26 Alok Pandey Electrically fired steam locomotive
US20080053383A1 (en) * 2006-09-06 2008-03-06 Alan Varacins Flash steam generator
US7995905B2 (en) * 2006-09-06 2011-08-09 Illinois Tool Works Inc. Flash steam generator
US20080193112A1 (en) * 2007-02-14 2008-08-14 Battelle Memorial Institute Apparatus for Vaporization of Liquid
US8666235B2 (en) * 2007-02-14 2014-03-04 Battelle Memorial Institute Liquid fuel vaporizer and combustion chamber having an adjustable thermal conductor
US20110059409A1 (en) * 2007-02-14 2011-03-10 Battelle Memorial Institute Liquid Fuel Vaporizer and Combustion Chamber Having an Adjustable Thermal Conductor
US7899309B2 (en) * 2007-02-14 2011-03-01 Battelle Memorial Institute Apparatus for vaporization of liquid
US9431944B2 (en) * 2008-02-01 2016-08-30 Isis Innovation Ltd Electricity generator
US20100329652A1 (en) * 2008-02-01 2010-12-30 Isis Innovation Ltd. Electricity generator
US20090304372A1 (en) * 2008-06-09 2009-12-10 Leister Process Technologies Electrical resistance heating element for a heating device for heating a flowing gaseous medium
US20120100497A1 (en) * 2009-06-23 2012-04-26 Sung Ho Joo Burner using plasma
US20110280553A1 (en) * 2010-05-17 2011-11-17 Zweita International Co., Ltd. Steam generator
US8554063B2 (en) * 2010-05-17 2013-10-08 Zweita International Co., Ltd. Steam generator
US20120328271A1 (en) * 2011-06-24 2012-12-27 Yuan Kwang-Tong Steam generator
US8724978B2 (en) * 2012-05-08 2014-05-13 Philtech, Inc. Fluid heating-cooling cylinder device
US20150219361A1 (en) * 2012-08-16 2015-08-06 Top Electric Appliances Industrial Ltd Device for heating and/or vaporizing a fluid such as water
US20140261700A1 (en) * 2013-03-15 2014-09-18 Peter Klein High thermal transfer flow-through heat exchanger
US9516971B2 (en) * 2013-03-15 2016-12-13 Peter Klein High thermal transfer flow-through heat exchanger
US20160178235A1 (en) * 2014-12-22 2016-06-23 Horiba Stec, Co., Ltd. Fluid heater
US9618196B2 (en) * 2015-01-08 2017-04-11 Dongguan Pheaton Electronic Technology Co., Ltd. Steam generator

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