DEVICE FOR FORMING AEROSOL, AND METHOD AND APPARATUS FOR COATING GLASS

• US 20100330377A1
• Filed: 06/30/2010
• Published: 12/30/2010
• Est. Priority Date: 12/20/2007
• Status: Abandoned Application

• Current Assignee: Beneq Oy (Qingdao Sifang SRI & Intellectual Co., Ltd.)
• Original Assignee: Beneq Oy (Qingdao Sifang SRI & Intellectual Co., Ltd.)
• Inventors: VALKEAPÄÄ, Tomi, ILMARINEN, Joonas, ASIKKALA, Kai, RAJALA, Markku
• Application Number:
  US12/827,815
• Publication Number:
  US 20100330377A1
• Time in Patent Office: Days
• US Class Current: 428/426
• CPC Class Codes: B05B 7/0441 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
• CPC Class Codes: B05B 7/045 the gas and liquid flows being parallel just upstream the mixing chamber B05B7/0458, B05B7/0466 take precedence
• CPC Class Codes: B05B 7/0475 with means for deflecting the peripheral gas flow towards the central liquid flow B05B7/0458 takes precedence
• CPC Class Codes: B05B 7/2494 a liquid being supplied from a pressurized or compressible container to the discharge device
• CPC Class Codes: C03C 17/25 by deposition from the liquid phase
• CPC Class Codes: C03C 17/253 Coating containing SnO2
• CPC Class Codes: C03C 2217/211 SnO2
• CPC Class Codes: C03C 2217/213 SiO2
• CPC Class Codes: C03C 2217/214 Al2O3
• CPC Class Codes: C03C 2217/218 V2O5, Nb2O5, Ta2O5
• CPC Class Codes: C03C 2218/112 by spraying
• CPC Class Codes: C03C 23/006 by plasma or corona discharge
• CPC Class Codes: F23D 91/04 for heating liquids, e.g. for vaporising or concentrating

Abstract

The invention relates to a device for forming aerosol, the device comprising at least one gas-dispersing atomizer for atomizing a liquid into aerosol by means of gas at an atomizing head of the atomizer and an atomizing chamber, which is in flow connection with the atomizing head and in which flow restraints are arranged for changing the hydrodynamic properties of the aerosol flow discharging from the atomizing head. According to the present invention the flow restraints are arranged in the inner walls of the atomizing chamber in such a manner that they protrude from the inner walls to the inside of the atomizing chamber.

Claims

1-41. -41. (canceled)

42. An apparatus for providing a coating onto the surface of glass, the apparatus comprising at least one gas-dispersing atomizer for atomizing at least one liquid used for coating the glass into aerosol by means of gas at an atomizing head of the atomizer and one or more flow restraints for changing the hydrodynamic properties of the aerosol flow discharging from the atomizing head in a manner reducing the drop size of the aerosol before it is conducted onto the surface of the glass, wherein the flow restraints are arranged in such a manner that the average aerodynamic diameter of the drops of the aerosol discharging from the atomizer is 3 micrometres or less, preferably 1 micrometre or less.

43. An apparatus as claimed in claim 42, wherein the atomizer comprises an atomizing chamber, which is in flow connection with the atomizing head and in which the flow restraints are arranged.

44. An apparatus as claimed in claim 43, wherein the flow restraints are arranged in the inner walls of the atomizing chamber in such a manner that they protrude from the inner walls to the inside of the atomizing chamber.

45. An apparatus as claimed in claim 42, wherein the flow restraints are arranged between the atomizing head of the atomizer and the glass.

46. An apparatus as claimed in claim 42, wherein the flow restraints are arranged in such a manner that the drops of the aerosol discharging from the atomizing head collide with one or more flow restraints and/or with each other for reducing the drop size of the aerosol, and/or that the flow restraints are arranged in such a manner that they generate a pressure variation and/or a throttling in the aerosol flow discharging from the atomizing head for reducing the drop size of the aerosol.

47. An apparatus as claimed in claim 42, wherein the apparatus comprises means for producing particles having an average diameter of less than 200 nm and for conducting them onto the surface of the glass before and/or after the aerosol of the atomized liquid is conducted onto the surface of the glass.

48. An apparatus as claimed in claim 47, wherein the apparatus comprises at least one liquid flame injection burner for producing particles having an average diameter of less than 200 nm for coating the glass, or that the apparatus comprises one or more thermal reactors for converting at least part of the aerosol produced with at least one atomizer into particles having an average diameter of less than 200 nm.

49. An apparatus as claimed in claim 48, wherein the thermal reactor is a flame provided by means of a combustion gas and an oxidizing gas.

50. A method for providing a coating onto the surface of a glass product from at least one liquid raw material, the method comprises the steps of:

atomizing at least one liquid raw material by means of at least one gas-dispersing atomizer into aerosol that is discharged from an atomizing head of the atomizer;

reducing the drop size of the aerosol discharged from the atomizing head of the atomizer by changing the hydrodynamic properties of the aerosol flow by means of flow restraints; and

conveying the aerosol onto the surface of the glass product, wherein the aerosol reacts providing a coating onto the surface of the glass product, wherein the method comprises reducing the average drop size of the aerosol by changing the hydrodynamic properties of the aerosol flow by means of the flow restraints in such a manner that the average aerodynamic diameter of the drops of the aerosol is 3 micrometres or less, preferably 1 micrometre or less.

51. A method as claimed in claim 50, wherein the method comprises reducing the average drop size of the aerosol by changing the hydrodynamic properties of the aerosol flow by means of the flow restraints in such a manner that the drops of the aerosol discharging from the atomizing head collide with one or more flow restraints and/or with each other for reducing the drop size of the aerosol.

52. A method as claimed in claim 50, wherein the method comprises reducing the average drop size of the aerosol by changing the hydrodynamic properties of the aerosol flow by means of the flow restraints in such a manner that they generate a pressure variation and/or a throttling in the aerosol flow discharging from the atomizing head for reducing the drop size of the aerosol.

53. A method as claimed in claim 50, wherein the method also comprises producing particles having an average diameter of less than 200 nm that are conducted onto the surface of the glass before and/or after the aerosol produced from the liquid raw material is conducted onto the surface of the glass.

54. A method as claimed in claim 53, wherein the method comprises producing particles having an average diameter of less than 200 nm with a liquid flame injection burner for coating the glass product, or producing particles having an average diameter of less than 200 nm from an aerosol produced with at least one atomizer by means of one or more thermal reactors.

55. A method as claimed in claim 50, wherein the method comprises using the method for coating flat glass on a flat glass production line and/or for coating flat glass on a flat glass hardening line.

56. A glass product coated with a method as claimed in claim 50.

57. A glass product as claimed in claim 56, wherein the glass product is low-emissivity glass (low-e glass), solar energy absorbing glass (solar control glass), electrochromic glass or a glass product having an emissivity of less than 0.15.