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Title:
GLASSWARE MOLD LUBRICATION BURNER
Document Type and Number:
WIPO Patent Application WO/2007/130111
Kind Code:
A1
Abstract:
A burner for depositing carbon soot on a glassware mold (12) includes a burner nozzle (26) having an annular array of individual gas outlet ports (34, 40), a fuel passage within the nozzle connected to a first plurality (34) of the outlet ports and an oxidant passage in the nozzle connected to a second plurality (40) of the outlet ports. The first plurality of outlet ports individually alternate with the second plurality of outlet ports around the annular array such that the array presents alternate fuel and oxidant outlet ports around the array. An ignition electrode (54) is disposed on the burner nozzle within the annular array of outlet ports for igniting fuel and oxidant emerging from the outlet ports. The ignition electrode preferably is in the form of an elongated ignition electrode rod telescopically surrounded by an insulator (56) and centered on the burner nozzle within the annular array of outlet ports, and a ground electrode (90) telescopically surrounding the insulator. The ground electrode preferably is part of the burner nozzle and is electrically connected to a burner mounting block on which the burner nozzle is mounted.

Inventors:
BOATWRIGHT, Jayson, Douglas (26 Tarragon Street, Mile EndSouth Australia, 5031, AU)
PRICKET, Gary (5 Mill St, Redland BayQueensland, 4165, AU)
SCOTT, Garrett, L. (2424 St. James Wood Blvd, Toledo, OH, 43617, US)
LEIDY, D., Wayne (9921 Parliament Place, Perrysburg, OH, 43551, US)
OBEE, Charles, B. (4432 Pennfield Road, Toledo, OH, 43612, US)
Application Number:
US2006/032785
Publication Date:
November 15, 2007
Filing Date:
August 22, 2006
Export Citation:
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Assignee:
OWENS-BROCKWAY GLASS CONTAINER INC. (One SeaGate, Toledo, OH, 43666, US)
BOATWRIGHT, Jayson, Douglas (26 Tarragon Street, Mile EndSouth Australia, 5031, AU)
PRICKET, Gary (5 Mill St, Redland BayQueensland, 4165, AU)
SCOTT, Garrett, L. (2424 St. James Wood Blvd, Toledo, OH, 43617, US)
LEIDY, D., Wayne (9921 Parliament Place, Perrysburg, OH, 43551, US)
OBEE, Charles, B. (4432 Pennfield Road, Toledo, OH, 43612, US)
International Classes:
F23Q3/00; C03B40/027; F23D14/22
Foreign References:
US2668592A1954-02-09
US20030221455A12003-12-04
FR2532405A11984-03-02
GB2308179A1997-06-18
US5217363A1993-06-08
US4892475A1990-01-09
US5772421A1998-06-30
Attorney, Agent or Firm:
SMITH, Susan, L. (One SeaGate, 25-LDPToledo, OH, 43666, US)
Download PDF:
Claims:

Claims

1.

A burner for depositing carbon soot on a glassware mold (12), which includes:

a burner nozzle (26) having an annular array of individual gas outlet ports (34, 40) ,

a fuel passage within said nozzle connected to a first plurality (34) of said outlet ports, and an oxidant passage in said nozzle connected to a second plurality (40) of said outlet ports,

said first plurality of outlet ports individually alternating with said second plurality of outlet ports around said annular array such that said array presents alternate fuel and oxidant outlet ports around said annular array, characterized in that

an ignition electrode (54) is disposed on said burner body within said annular array

of outlet ports for igniting fuel and oxidant emerging from said outlet ports.

2.

The burner set forth in claim 1 including an insulator (56) surrounding said ignition electrode (54) and a ground electrode (90) surrounding said insulator disposed on said burner nozzle concentrically within said annĪ¼lar array of outlet ports.

3.

The burner set forth in claim 2 wherein said burner nozzle has an electrode passage within said annular array of outlet ports, and said ignition electrode (54) and said insulator (56) are received within said electrode passage.

4.

The burner set forth in claim 3 including a burner block (42) of electrically conductive construction, said burner nozzle (26) being mounted on said burner block, said fuel and oxidant passages extending through said burner block, said ground electrode (90) being electrically coupled to said burner block.

5.

The burner set forth in claim 4 wherein said ground electrode (90) is part of said burner nozzle.

6.

The burner set forth in claim 4 including an electrical coil (68) carried by said

burner block, said electrical coil having an input terminal (72) for receiving an ignition signal and an output terminal (74) coupled to said ignition electrode.

7.

The burner set forth in claim 6 wherein said electrical coil (68) is potted within a housing (66) that is mounted in a pocket (84) in said burner block (42).

8.

The burner set forth in claim 4 wherein said ignition electrode (54) and said

insulator (56) are removably mounted on said burner block (42).

9.

A burner for depositing soot on a glassware mold (12), which includes:

a burner nozzle (26) having an annular array of individual outlet ports, a fuel passage within said nozzle connected to a first plurality (34) of said outlet ports, and an oxidant

passage within said nozzle connected to a second plurality (40) of said outlet ports,

said first plurality of outlet ports comprising individual circular outlet ports, and said second plurality of outlet ports comprising individual slots that alternate within said array

with said circular outlet ports and have long dimensions oriented radially of said annular array so as to produce a mixture of fuel and oxidant with a central portion that is oxidant rich, characterized in that

a pair of electrodes (56, 90) are carried by said nozzle so as to be disposed within

said oxidant-rich portion of said mixture for igniting said mixture.

The burner set forth in claim 9 wherein said pair of electrodes includes an ignition

electrode (54) carried by but insulated from said nozzle and a ground electrode (90).

11.

The burner set forth in claim 9 wherein said pair of electrodes includes an ignition electrode rod (54) and an insulator (56) telescopically surrounding said ignition electrode rod.

12.

The burner set forth in claim 11 wherein said ground electrode (90) is part of said

burner nozzle.

13.

The burner set forth in claim 12 including a burner block (42) of electrically conductive construction, said burner nozzle (26) being mounted and electrically coupled to said burner block.

14.

The burner set forth in claim 13 including an electrical coil (68) carried by said

burner block, said electrical coil having an input terminal (72) for receiving an ignition signal and an output terminal (74) coupled to said ignition electrode.

10

15.

The burner set forth in claim 14 wherein said ignition electrode (54) and said insulator (56) are removably mounted on said burner block (42).

16.

The burner set forth in claim 15 wherein said electrical coil (68) is potted within a housing (66) mounted on said burner block (42), said output terminal (74) of said coil being

connected to a connector plate (62), and said ignition electrode (54) and insulator (56) being threadably received onto said connector plate.

Description:

GLASSWARE MOLD LUBRICATION BURNER

The present disclosure relates to spark ignition of gases emerging from a burner to deposit soot on the glass-contacting surfaces of a glassware forming mold.

Background and Summary of the Disclosure

U.S. patent document 2003/0221455A1 discloses a system for flame-deposition of carbon onto the glass-contacting surfaces of a glassware forming mold. A burner includes a

nozzle having separate fuel and oxidant gas passages that terminate in respective pluralities of outlet ports from the nozzle. The pluralities of outlet ports preferably form an annular composite array in which the fuel and oxidant outlet ports alternate with each other. The oxidant outlet

ports preferably comprise slots having long dimensions radial to the annular array. The fuel outlet ports preferably are circular. A pair of spark electrodes, including an ignition electrode

and a ground electrode, are spaced from each other and disposed within the gas stream emerging from the burner. The electrodes are energized to ignite the carbon-containing gas mixture and

form a flame that precipitates electrically conductive carbon particles onto the glass-contacting

surfaces of the mold. Immersion of the electrodes in the flame path makes the electrodes susceptible to carbon buildup. Furthermore, the electrodes can deflect or alter the

flame pattern, particularly as carbon builds up on the electrodes, resulting in less than optimum carbon deposition on the mold surfaces. U.S. application Serial No. 11/190,366 filed July 27,

2005 discloses a burner in which one of the electrodes is carried by the burner nozzle so as to be

surrounded by the ignited flame while the other electrode is positioned outside of the flame. It

is a general object of the present disclosure to provide a glassware mold lubrication system that

reduces or eliminates carbon deposition on the spark electrodes, in which the electrodes do not

affect the flame pattern of the ignited carbon-containing gas, and in which the spark electrodes (both ignition and ground electrodes) are carried as an assembly with the burner nozzle.

The present disclosure embodies a number of aspects that can be implemented separately from or in combination with each other.

A burner for depositing carbon soot on a glassware mold, in accordance with one aspect of the present disclosure, includes a burner nozzle having an annular array of individual gas outlet ports, a fuel passage within the nozzle connected to a first plurality of the outlet ports and an oxidant passage in the nozzle connected to a second plurality of the outlet ports. The first plurality of outlet ports individually alternate with the second plurality of outlet ports around the annular array such that the array presents alternate fuel and oxidant outlet ports around the array. An ignition electrode is disposed on the burner nozzle within the annular array of outlet ports for igniting fuel and oxidant emerging from the outlet ports. The ignition electrode preferably is in the form of an elongated ignition electrode rod telescopically surrounded by an insulator and centered on the burner nozzle within the annular array of outlet ports, and a ground electrode telescopically surrounding the insulator. The ground electrode preferably is part of the burner nozzle and is electrically connected to a burner mounting block on which the burner nozzle is mounted. Brief Description of the Drawings

The disclosure, together with additional objects, features, advantages and aspects thereof, will best be understood from the following description, the appended claims and the accompanying drawings, in which:

FIG. 1 is a fragmentary sectional view of a glassware mold lubrication system in accordance with an exemplary embodiment of the present disclosure;

FIG. 2 is an end view of the burner nozzle and spark electrode assembly in the burner of FIG. 1;

FIG. 3 is an exploded partially sectioned elevational view of the burner of FIG.

l;

FIG. 4 is an exploded sectional view of the burner nozzle in FIGS. 1-3;

FIG. 5 is a perspective view of the ignition module assembly in the burner of FIG. 1; and

FIG.6 is an electrical schematic diagram of the ignition module assembly of FIG. 4.

Detailed Description of Preferred Embodiments

The disclosure of U.S. patent document 2003/0221455A1 is incorporated herein by reference.

FIG. 1 illustrates a system 10 for lubricating the glass-contacting surfaces of a

glassware forming mold 12. Mold 12 is illustrated by way of example as including a pair of mold

sections 14,16 having respective glass-contacting surfaces 18,20. Mold 12 has an open end 22 that is aligned with a gas burner 24. (It will be appreciated that burner 24 and system 10 are

moved into and out of alignment with open end 22 during operation of the glassware forming system.) Burner 24 preferably includes a burner nozzle 26 that is generally of the type disclosed

in above-noted U.S. patent document 2003/0221455A1, including an inner member or tip 28 carried within an outer member or cap 30. A first gas passage 32, preferably a fuel gas passage,

extends through tip 28 and terminates in an annular array of outlet ports 34 (FIG. 2). A second

gas passage 38, preferably an oxidant gas passage, extends between tip 28 and cap 30 to a second

annular array of outlet ports 40 (FIG. 2). As best seen in FIG. 2, outlet ports 34,40 preferably

alternate with each other in a composite annular array of outlet ports. Ports 34, which preferably

are fuel outlet ports, preferably are of circular geometry as best seen in FIG. 2, while ports 40,

which preferably are oxidant outlet ports, preferably are in the form of slots having long dimensions extending radially of the annular array. This preferred annular port construction has the advantage of generating an annular gas mixture downstream from the outlet end of burner

nozzle 26, in which the center is oxidant-rich due to the slot-shaped geometries of ports 40.

Other burner nozzle outlet port configurations can be employed.

Tip 28 is mounted within cap 30, and cap 30 is mounted within a burner block 42 (FIGS. 1 and 3), preferably by being threadably received within a corresponding opening 43 in the burner block. In the illustrated exemplary embodiment of the disclosure, burner tip 28 is a

two-piece assembly that includes a tip orifice 90 secured within a tip housing 92. Passages 32 include an annular passage that extends between tip orifice 90 and housing 92, and then

individual passages that extend through the end 94 of tip orifice 90 to ports 34. Burner block 42

has a first gas passage 44 that communicates in assembly with passage 38 in nozzle 26 for

feeding oxidant to outlet ports 40 (FIG. 2). Outlet ports preferably are disposed in tip orifice 90. Burner block 42 has a second gas passage 46 that communicates in assembly with passage 32 in

nozzle 26 for feeding combustible fuel to outlet ports 34 (FIG.2). Passages 44,46 may be of any suitable geometry, with those illustrated in FIG. 1 being by way of example only. The upper end 51 of tip orifice 90 is telescopically received within a passage 50 of burner block 42. An O-ring

or other suitable gasket sealingly engages the inside surface of passage 50.

An ignition electrode assembly 48 includes a rod-shaped ignition electrode 54 of

electrically conducive construction telescopically surrounded by a tubular insulator sleeve 56.

In the exemplary embodiment of the disclosure, the outer surface of insulator sleeve is

telescopically received within the hollow interior of tip orifice 90, which is part of the burner

nozzle and functions as the ground electrode of the spark electrode arrangement. As * shown in

FIG. 1 , there may be a radial gap or space between a major portion of the outer surface of sleeve

56 and the opposing inside surface of tip orifice 90, with a tight fit being formed at the lower end of the sleeve and tip to prevent entry of fuel mixture. A separate ground electrode sleeve could

be provided as part of electrode assembly 48, if desired. The tip of spark electrode 54 is exposed,

and is centrally positioned within the array of outlet ports 34,40 as best seen in FIG. 2.

The outer end of ignition electrode 54 is electrically connected and secured to a

mounting nut 60 that is threadably received within a conductor plate 62. Conductor plate 62 is mounted within an insulator housing 64. An ignition module subassembly 66 includes housing 64 and plate 62 in assembly with an ignition coil 68. Ignition coil 68 includes a primary winding

70 (FIG.6) having an input terminal 72 (FIGS. 1 and 5) for receiving a spark ignition signal from external control circuitry, and a secondary winding 73 with an output terminal 74 connected to

plate 62. A second input terminal 76 (FIGS. 5 and 6) is connected to electrical ground. After

assembly of coil 68 within housing 64 and connection of terminals 72-76 as described, housing

64 preferably is filled with suitable potting material 78. Housing 64 with coil 68 is mounted

within a pocket 84 in burner mounting block 42. The assembly 68 of electrode 54, insulator 56 and nut 60 preferably are removable from ignition module subassembly 66 for maintenance and

repair purposes. A cover 80 is secured to housing 64 by screws 82 to cover the ignition electrode in assembly.

Ignition electrode 54 thus is insulated from burner mounting block 42 and ground

electrode/tip 90, while ground electrode/tip 90 preferably is electrically connected to burner block

42. Burner block 42 preferably is physically and electrically connected to suitable grounded

mounting structure for moving the burner into and out of alignment with mold 12. Fuel and

oxidant are fed to nozzle 56 through passages 46, 44, and the gas emerging from burner nozzle

26 is ignited by application of electrical energy to ignition electrode 54 through coil 68.

Disposition of both the ignition electrode and the ground electrode within the annular array of gas outlet ports , particularly in combination with the preferred slot-shaped geometry of oxidant outlet

ports 40 as previously described which form an oxygen-rich central portion in the gas mixture, reduces or eliminates deposition of soot between ignition electrode 54 and ground electrode/tip

90. Furthermore, the ignition and ground electrodes are provided in a single assembly with the

burner nozzle.

The present disclosure thus provides a glassware mold lubrication system and burner that fully satisfy all of the objects and aims previously set forth. The disclosure has been

presented in conjunction with an exemplary presently preferred embodiment, and various modifications and variations have been discussed. Other modifications and variations readily will

suggest themselves to persons of ordinary skill in the art in view of the foregoing description. The disclosure is intended to embrace all such modifications and variations as fall within the

spirit and broad scope of the appended claims.