HEATING ELEMENT, STEAM CUTTING DEVICE, AND BURNER OF A POWER-GENERATING DEVICE

• US 20130248497A1
• Filed: 12/22/2011
• Published: 09/26/2013
• Est. Priority Date: 12/29/2010
• Status: Active Grant

• Current Assignee: Fronius International GmbH (G&K Privatstiftung)
• Original Assignee: Fronius International GmbH (G&K Privatstiftung)
• Inventors: Magerl, Christian, Leeb, Josef, Stoeger, Max, Resch, Christian, Platzer, Daniel
• Granted Patent: US 9,151,487 B2
• Time in Patent Office: Days
• US Class Current: 219/121.39
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: B23K 9/013 Arc cutting, gouging, scarfing or desurfacing
• CPC Class Codes: F22B 1/281 other than by electrical resistances or electrodes
• CPC Class Codes: F23D 11/448 heated by electrical means
• CPC Class Codes: F23D 14/42 for cutting F23D14/44 takes precedence
• CPC Class Codes: F23D 14/66 Preheating the combustion air or gas
• CPC Class Codes: H05B 6/108 for heating a fluid
• CPC Class Codes: H05H 1/34 Details, e.g. electrodes, nozzles
• CPC Class Codes: Y02E 20/34 Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention relates to a heating element (25) for liquids to be vaporized as well as a burner (6) of a steam cutting device (1) and a burner (38) of a power-generating device, the element being designed as an induction heater (47) comprising one coil (25a). In order to improve vaporization, the coil (25a) of the induction heater (47) is enclosed in a hybrid construction which is composed of a main part (31) with laterally extending webs (33), and which consists of an easily magnetizable material (35) and a thermally highly-conductive material, a covering element (32) consisting of nanocrystalline materials being arranged on the webs (33), and the easily magnetizable material (35) being designed to be installed on a thermally highly-conductive material (37) of a vaporizer (21).

Claims

1. A heating element (25) for liquids to be vaporized, for instance, a burner (6) of a steam cutting device (1) or a burner (38) of a power-generating device, said element being designed as an induction heater (47) having a coil (25a), wherein the coil (25a) of the induction heater (47) is enclosed in a hybrid construction which is composed of a main part (31) with laterally extending webs (33) and consists of an easily magnetizable material (35) and a thermally highly-conductive material, a covering element (32) consisting of nanocrystalline materials being arranged on said webs (33), and the easily magnetizable material (35) being designed to adjoin a thermally highly-conductive material (37) of a vaporizer (21).

2. The heating element (25) according to claim 1, wherein the easily magnetizable material (35) is made of iron or ferritic high-grade steel.

3. The heating element (25) according to at claim 1, wherein the thermally highly-conductive material (37) is made of copper, aluminum or silver.

4. The heating element (25) according to claim 1, wherein the easily magnetizable material (35) of the hybrid construction is pressed onto the thermally highly-conductive material (37) of the vaporizer (21).

5. The heating element (25) according to claim 1, wherein the easily magnetizable material (35) encloses the coil (25a) on all sides.

6. The heating element (25) according to claim 1, wherein a current mode operated circuit is provided for triggering the induction heater (47).

7. The heating element (25) according to claim 6, wherein the circuit comprises transistors, whereby always two transistors are being switched on until a certain current value has been reached by the heating.

8. A steam cutting device (1), comprising a burner (6), a control device (3), a liquid supply and a power source (2), the burner (6) being connected to the power source (2) via lines (9, 10) and to the liquid supply via a supply line (7), and in the burner (6) at least one channel being present for converting a liquid into a gas, whereby the burner (6) comprises at least one cathode and one anode, between which a vaporizer (21) is formed, and the liquid supply being connected to an intermediate space between the cathode and the anode through the channel via a line, and whereby furthermore a heating element (25) is arranged in the burner (6), which element is allocated to the channel for vaporization of the liquid, wherein the heating element (25) is formed by an induction heater (47) enclosing the vaporizer (21), which induction heater (47) is embedded in a hybrid construction, and a coil (25a) is enclosed by the hybrid construction comprising an easily magnetizable material (35) which adjoins a thermally highly-conductive material (37) of the vaporizer (21).

9. The steam cutting device (1) according to claim 8, wherein the induction heater (47) has a coil (25a) enclosed in a hybrid construction which is composed of a main part (31) with laterally extending webs (33) and consists of an easily magnetizable material (35) and a thermally highly-conductive material, a covering element (32) consisting of nanocrystalline materials being arranged on said webs (33), and the easily magnetizable material (35) being designed to adjoin a thermally highly-conductive material (37) of a vaporizer (21).

10. A burner (38) of a power-generating device of a charger comprising a heating element (25) which is arranged in a burner housing (39), whereby a connection to a vaporizer (40) of the burner (38) is provided, and the outer shape of the heating element (25) is adapted to the outer shape of the burner housing (39), whereby the vaporizer (40) is connected to a liquid supply for the supply of fuel, wherein the heating element (25) is formed by an induction heater (47) having a coil body provided with windings, the core of which coil body being formed by the vaporizer (40), and enclosing the vaporizer (40), and wherein the induction heating element (47) is embedded in a hybrid construction, and a coil (25a) is enclosed by the hybrid construction having an easily magnetizable material (35) adjoining a thermally highly-conductive material (37) of the vaporizer (40).

11. The burner (38) according to claim 10, wherein the induction heater (47) has a coil (25a) enclosed in a hybrid construction which is composed of a main part (31) with laterally extending webs (33) and consists of an easily magnetizable material (35) and a thermally highly-conductive material, a covering element (32) consisting of nanocrystalline materials being arranged on said webs (33), and the easily magnetizable material (35) being designed to adjoin a thermally highly-conductive material (37) of a vaporizer (21).