Gas burner with a pneumatic actuating injet

Patent metadata

Field	Value
Publication number	US-11592174-B2
Application number	US-201816045055-A
Country	US
Kind code	B2
Filing date	Jul 25, 2018
Priority date	Jul 25, 2018
Publication date	Feb 28, 2023
Grant date	Feb 28, 2023

Abstract

A gas burner includes a burner body that defines a plurality of forced induction flame ports. An air outlet orifice is mounted to an injet body at an outlet of an air passage such that the air outlet orifice is oriented for directing a flow of air towards the plurality of forced induction flame ports. A gas outlet orifice is mounted to the injet body at an outlet of a gas passage such that the gas outlet orifice is oriented for directing a flow of gaseous fuel towards the plurality of forced induction flame ports. A pneumatically actuated gas valve is positioned within the injet body. The pneumatically actuated gas valve is configured to adjust from a closed configuration to an open configuration in response to the flow of air through the air passage.

First claim

What is claimed is:

1. A gas burner, comprising:
a burner body defining a plurality of forced induction flame ports;
a gas outlet orifice;
an air outlet orifice;
an injet body defining an air passage and a gas passage, the air outlet orifice mounted to the injet body at an outlet of the air passage such that the air outlet orifice is oriented for directing a flow of air towards the plurality of forced induction flame ports, the air passage configured for directing the flow of air through the injet body to the air outlet orifice, the gas outlet orifice mounted to the injet body at an outlet of the gas passage such that the gas outlet orifice is oriented for directing a flow of gaseous fuel towards the plurality of forced induction flame ports, the gas passage configured for directing the flow of gaseous fuel through the injet body to the gas outlet orifice;
a pneumatically actuated gas valve positioned within the injet body, the pneumatically actuated gas valve adjustable between a closed configuration and an open configuration, the pneumatically actuated gas valve blocking the flow of gaseous fuel through the gas passage in the closed configuration, the pneumatically actuated gas valve configured to adjust from the closed configuration to the open configuration in response to the flow of air through the air passage; and
a mixing tube having an opening positioned adjacent the injet assembly, the mixing tube extending from the opening to the burner body,
wherein the gas outlet orifice and the air outlet orifice on the injet body are spaced from the opening of the mixing tube by a gap that is contiguous with ambient air around the gas burner such that the flow of air from the air outlet orifice and the flow of gaseous fuel from the gas outlet orifice entrain the ambient air into the mixing tube.

2. The gas burner of claim 1 , wherein the air outlet orifice is one of a plurality of air outlet orifices, the outlet of the air passage is one of a plurality of outlets of the air passage, each of the plurality of air outlet orifices mounted to the injet body at a respective one of the plurality of outlets of the air passage.

3. The gas burner of claim 2 , wherein the plurality of air outlet orifices are symmetrically positioned around the gas outlet orifice on the injet body.

4. The gas burner of claim 1 , wherein the air outlet orifice is one of a pair of air outlet orifices, the outlet of the air passage is one of a pair of outlets of the air passage, each of the pair of air outlet orifices mounted to the injet body at a respective one of the pair of outlets of the air passage, and one of the pair of air outlet orifices is positioned opposite the other of the pair of air outlet orifices about the gas outlet orifice.

5. The gas burner of claim 1 , wherein the pneumatically actuated gas valve comprises:
a diaphragm positioned between the air passage and the gas passage within the injet body;
a seal mounted to the injet body within the gas passage; and
a plug mounted to the diaphragm, the plug positioned against the seal in the closed configuration.

6. The gas burner of claim 5 , wherein the diaphragm is a circular diaphragm.

7. The gas burner of claim 5 , wherein the pneumatically actuated gas valve further comprises a spring coupled to the plug, the spring urging the plug towards the seal.

8. The gas burner of claim 5 , wherein the injet body comprises a first injet body half and a second injet body half, the diaphragm clamped between the first injet body half and the second injet body half.

9. The gas burner of claim 1 , wherein the injet body comprises a first injet body half and a second injet body half, an inlet of the air passage defined by the first injet body half, an inlet of the gas passage defined by the second injet body half.

10. A gas burner, comprising:
a burner body defining a plurality of forced induction flame ports;
an air outlet orifice configured for directing pressurized air towards the plurality of forced induction flame ports;
a gas outlet orifice configured for directing gaseous fuel towards the plurality of forced induction flame ports;
an injet body defining an air passage and a gas passage, the air outlet orifice mounted to the injet body at an outlet of the air passage, the gas outlet orifice mounted to the injet body at an outlet of the gas passage;
a pneumatically actuated gas valve positioned within the injet body, the pneumatically actuated gas valve blocking a flow of gaseous fuel in the gas passage when the pneumatically actuated gas valve is closed, the pneumatically actuated gas valve configured to open in response to pressurizing the air passage; and
a mixing tube having an opening positioned adjacent the injet assembly, the mixing tube extending from the opening to the burner body,
wherein the gas outlet orifice and the air outlet orifice on the injet body are spaced from the opening of the mixing tube by a gap that is contiguous with ambient air around the gas burner such that the flow of air from the air outlet orifice and the flow of gaseous fuel from the gas outlet orifice entrain the ambient air into the mixing tube.

11. The gas burner of claim 10 , wherein the air outlet orifice is one of a plurality of air outlet orifices, the outlet of the air passage is one of a plurality of outlets of the air passage, each of the plurality of air outlet orifices mounted to the injet body at a respective one of the plurality of outlets of the air passage.

12. The gas burner of claim 11 , wherein the plurality of air outlet orifices are symmetrically positioned around the gas outlet orifice on the injet body.

13. The gas burner of claim 10 , wherein the air outlet orifice is one of a pair of air outlet orifices, the outlet of the air passage is one of a pair of outlets of the air passage, each of the pair of air outlet orifices mounted to the injet body at a respective one of the pair of outlets of the air passage, and one of the pair of air outlet orifices is positioned opposite the other of the pair of air outlet orifices about the gas outlet orifice.

14. The gas burner of claim 10 , wherein the pneumatically actuated gas valve comprises:
a diaphragm positioned between the air passage and the gas passage within the injet body;
a seal mounted to the injet body within the gas passage; and
a plug mounted to the diaphragm, the plug positioned against the seal the pneumatically actuated gas valve is closed.

15. The gas burner of claim 14 , wherein the diaphragm is a circular diaphragm.

16. The gas burner of claim 14 , wherein the pneumatically actuated gas valve further comprises a spring coupled to the plug, the spring urging the plug towards the seal.

17. The gas burner of claim 14 , wherein the injet body comprises a first injet body half and a second injet body half, the diaphragm clamped between the first injet body half and the second injet body half.

18. The gas burner of claim 10 , wherein the injet body comprises a first injet body half and a second injet body half, an inlet of the air passage defined by the first injet body half, an inlet of the gas passage defined by the second injet body half.

19. The gas burner of claim 1 , wherein:
each of the gas outlet orifice, the air outlet orifice, and the gap has a respective length;
the gas outlet orifice extends from the injet body along the length of the gas outlet orifice;
the air outlet orifice extends from the injet body along the length of the air outlet orifice;
the gas outlet orifice and the air outlet orifice are spaced from the openi

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Cadima Paul Bryan

Classifications

• F23D14/065 Primary

  with injector axis inclined to the burner head axis · CPC title

• F23D14/02

  Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone · CPC title

• F23N1/027

  using mechanical means · CPC title

• F23D14/34 Primary

  Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air · CPC title

• F23N1/025

  using electrical or electromechanical means · CPC title