Integral spark ignited gas burner assembly

• US 4,846,671 A
• Filed: 12/06/1988
• Issued: 07/11/1989
• Est. Priority Date: 03/09/1988
• Status: Expired due to Term

• Current Assignee: Burner Systems International Incorporated
• Original Assignee: Harper-Wyman Company
• Inventors: Kwiatek, David J.
• Primary Examiner(s): Focarino, Margaret A.
• Application Number:
  US07/280,664
• Time in Patent Office: 217 Days
• Field of Search: 431/264, 431/266, 126/39 E, 126/39 R, 126/39 BA, 126/39 H
• US Class Current: 431/266
• CPC Class Codes: F23D 2207/00 Ignition devices associated with burner
• CPC Class Codes: F24C 3/085 on ranges
• CPC Class Codes: F24C 3/103 of electric ignition devices

Abstract

A gas burner assembly includes a detachable burner cap assembly having an electrically conductive burner cap body with a plurality of burner ports and an ignition port formed in a sidewall of the burner cap body. The burner cap body is connected to an electrical ground potential. An electrically insulative support member is mounted in the ignition port and defines an electrode receiving aperture. The electrically insulative support member cooperates with the ignition port to define an ignition gas pathway. A spark electrode extending through the support member aperture includes a portion extending though the ignition port and completely surrounded by the insulative support member. The spark electrode is selectively connected to an high voltage potential for providing ignition sparks between the electrode and the burner body through the ignition gas pathway. A stationary base assembly is adapted for detachable mating engagement with the burner cap assembly. The stationary base assembly includes a gas mixing member defining an aperture for receiving primary air and an outlet for supplying a primary air-gas mixture and for providing an electrical ground potential to the burner cap assembly, a high voltage receptacle operatively associated with the spark electrode for providing an electrical high voltage potential to the spark electrode and support structure for securing the base assembly with the gas range and for accurately aligning and positioning the high voltage receptacle and the gas mixing member outlet with the burner cap assembly.

Claims

1. A gas burner assembly comprising:

a detachable burner cap assembly including an electrically conductive burner cap body including a sidewall, a plurality of burner ports and an ignition port formed in said burner body sidewall and gas inlet means for receiving primary air-gas fuel mixture;

an electrically insulative support member extending through said ignition port having an electrode receiving aperture, said support member and said ignition port cooperating to define an ignition gas pathway; and

a spark electrode extending through said support member aperture and including a portion extending though the ignition port surrounded by said insulative support member; and

a stationary base assembly including an air-gas mixing member defining an aperature for receiving primary air and outlet means for supplying a primary air-gas mixture and for providing an electrical ground potential to the burner cap assembly;

a high voltage receptacle operatively associated with said spark electrode for providing an electrical high voltage potential to said spark electrode; and

support means for securing said base assembly with the gas range.

2. A gas burner assembly as recited in claim 1 wherein said gas inlet means for receiving primary air-gas fuel mixture includes a bottom plate member received within said burner cap body, said bottom plate having an opening for receiving primary air-gas fuel mixture and an electrically conductive sleeve member mounted in said opening.

3. A gas burner assembly as recited in claim 2 wherein said bottom plate member has a generally circular peripheral plate edge, said peripheral plate edge having a stepped shoulder for engagement with said burner cap body sidewall.

4. A gas burner assembly as recited in claim 2 wherein said bottom member opening is generally circular and said gas mixing member outlet means include an upstanding tubular portion received in said bottom member opening and spring means carried by said tubular portion for engagement with said electrically conductive sleeve member.

5. A gas burner assembly as recited in claim 4 wherein said spring means include a pair of axially spaced apart snap rings.

6. A gas burner assembly as recited in claim 4 wherein said bottom member opening has a generally flat sidewall defined between upper and lower toroidal surfaces, said sleeve member shaped conforming to said opening and said spring means include a ring member having a toroidal surface for engagement with said opening sidewall.

7. A gas burner assembly as recited in claim 2 wherein said bottom member opening has a sidewall defined by a generally toroidal surface, said sleeve member shaped conforming to said opening and said spring means include a ring member having a toroidal surface for engagement with said opening sidewall.

8. A gas burner assembly as recited in claim 4 wherein said bottom plate member and said burner cap body are formed of aluminum and said electrically conductive sleeve member is formed of a metal other than aluminum.

9. A gas burner assembly as recited in claim 8 wherein said spring means include a ring member having a toroidal surface and said ring member is formed of a metal other than aluminum.

10. A gas burner assembly as recited in claim 1 wherein said air-gas mixing member includes a lower tubular end portion for receiving a gas supply and for defining said primary air receiving aperature and further comprising shutter means secured to said lower tubular end portion for adjustably controlling said primary air receiving aperature.

11. A gas burner assembly as recited in claim 1 wherein said air-gas mixing member is an integrally formed upper air-gas mixing body portion of a unitary body having an inlet for receiving a gas supply and having a gas outlet for supplying gas to said upper air-gas mixing body portion, said primary air receiving aperature is defined laterally in said upper air-gas mixing body portion.

12. A gas burner assembly as recited in claim 11 further comprising shutter means operatively associated with said primary air receiving aperature.

13. A gas burner assembly as recited in claim 12 wherein said shutter means is axially slidably disposed around said upper air-gas mixing body portion for adjusting said laterally defined air receiving aperture.

14. A gas burner assembly as recited in claim 1 wherein said support means for securing said base assembly with the gas range include an upstanding flanged integrally formed portion of said air-gas mixing member.

15. A gas burner assembly as recited in claim 11 wherein said support means for securing said base assembly with the gas range include an upstanding flanged portion of said air-gas mixing body portion for securing said unitary body with a gas range top surface.

16. A gas burner assembly as recited in claim 15 further comprising a support member secured to said unitary body for positioning said high voltage receptacle with said burner cap assembly.

17. A gas burner assembly as recited in claim 15 wherein said support means further include means for securing said unitary body with a gas range burner box bottom surface.

18. A gas burner assembly comprising in combination a detachable burner cap assembly and a stationary base assembly:

the detachable burner cap assembly including an electrically conductive burner cap body including a sidewall, a plurality of burner ports and an ignition port formed in said burner body sidewall;

a bottom plate secured within said burner cap body defining gas inlet means for receiving primary air-gas fuel mixture;

an electrically insulative support member extending through said ignition port having an electrode receiving aperture, said support member and said ignition port cooperating to define an ignition gas pathway; and

a spark electrode extending through said support member aperture and including a portion extending though the ignition port completely surrounded by the insulative support member; and

the stationary base assembly including a unitary body having an upper air-gas mixing portion defining an aperature for receiving primary air, outlet means for supplying a primary air-gas mixture and for providing an electrical ground potential to the burner cap assembly and support means for securing said base assembly with the gas range; and

a high voltage receptacle operatively associated with said spark electrode for providing an electrical high voltage potential to said spark electrode.