Burner fire cap for gas cooktop and burner using the same

• US 8,220,450 B2
• Filed: 11/20/2009
• Issued: 07/17/2012
• Est. Priority Date: 11/21/2008
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Luo, Haitao, Miao, Weiwei, Zhang, Shenzhou
• Primary Examiner(s): Basichas, Alfred
• Application Number:
  US12/622,538
• Publication Number:
  US 20100126496A1
• Time in Patent Office: 970 Days
• Field of Search: 126/39.E, 126/39.R, 431/278, 431/354
• US Class Current: 126/39.E
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head
• CPC Class Codes: F23D 2900/14062 for cooking ranges having multiple flame rings
• CPC Class Codes: F23D 2900/14064 Burner heads of non circular shape

Abstract

A burner fire cap for a gas cooktop includes a substantially annular cover body. A plane is configured on the cover body. At least two bosses protruding from the plane are distributed in a peripheral direction of the fire cap on the plane. Fire holes are disposed on the bosses. In the burner fire cap for a gas cooktop, at least two bosses are disposed and the fire holes are disposed on the bosses. As compared with a burner fire cap for a gas cooktop in the prior art, the distribution of the fire holes on the fire cap is changed, thereby enhancing the uniformity for heating a bottom of a utensil by using a burner having the fire cap.

Claims

1. A burner fire cap for a gas cooktop, comprising:

a substantially annular cover body having a center point, wherein a plane is configured on the cover body; and

at least two bosses protruding from the plane are distributed on the plane in a peripheral direction of the fire cap, each of the bosses having

a first side surface extending along an outer periphery of the boss;

a second side surface having a first end and a second end, the first end being located on a first concentric circle centered on the center point of the cover body, the second end being located on a second concentric circle centered on the center point of the cover body, the first and second concentric circles having different radii, and the second surface extending along a path that is not parallel to a radial line passing through the center point of the cover body;

a third side surface having a first end and a second end, the first end being located substantially on the first concentric circle, and the second end being located substantially on the outer periphery of the boss;

a first set of fire holes disposed on the first side surface;

a second set of fire holes disposed on the second side surface; and

a third set of fire holes disposed on the third side surface.

2. The burner fire cap of claim 1, wherein recesses having the same number and substantially corresponding shape as the bosses are disposed on a rear side of the cover body.

3. The burner fire cap of claim 1, wherein the bosses are evenly distributed on the plane.

4. The burner fire cap of claim 1, wherein the third side surface inclines for approximately an angle δ

relative to the plane, and 100°

≦

δ

≦

150°

.

5. The burner fire cap of claim 4, wherein 120°

≦

δ

≦

125°

.

6. The burner fire cap of claim 1, wherein the first side surface inclines for approximately an angle θ

relative to the plane, and 45°

≦

θ

≦

90°

.

7. The burner fire cap of claim 6, wherein θ

=70.

8. The burner fire cap of claim 1, wherein the second side surface inclines for approximately an angle γ

relative to the plane, and 120°

≦

γ

≦

150°

.

9. The burner fire cap of claim 8, wherein γ

=135°

.

10. The burner fire cap of claim 1, wherein top surfaces of the bosses are located in the same horizontal plane.

11. The burner fire cap of claim 1, wherein the number of the bosses is two to eight, and the bosses are evenly distributed on the plane.

12. The burner fire cap of claim 11, wherein the number of the bosses is three or four, and the bosses are evenly distributed on the plane.

13. The burner fire cap of claim 1, wherein an auxiliary air supply channel is formed between adjacent bosses.

14. The burner fire cap of claim 1, wherein a thickness of the fire cap is between 12 cm and 15 cm.

15. The burner fire cap of claim 14, wherein the thickness of the fire cap is between 14 cm and 15 cm.

16. The burner fire cap of claim 1, wherein the third side surface extends along a path that is not parallel to a radial line passing through the center point of the cover body.

17. A gas cooktop burner, comprising:

a gas mixing chamber member having a gas cavity; and

a fire cap in fluid communication with the gas cavity, the fire cap having

a substantially annular cover body having a center point, wherein a plane is configured on the cover body; and

at least two bosses protruding from the plane are distributed on the plane in a peripheral direction of the fire ca each of the bosses having

a first side surface extending along an outer periphery of the boss;

a second side surface having a first end and a second end, the first end being located on a first concentric circle centered on the center point of the cover body, the second end being located on a second concentric circle centered on the center point of the cover body, the first and second concentric circles having different radii, and the second surface extending along a path that is not parallel to a radial line passing through the center point of the cover body;

a third side surface having a first end and a second end, the first end being located substantially on the first concentric circle, and the second end being located substantially on the outer periphery of the boss;

a first set of fire holes disposed on the first side surface;

a second set of fire holes disposed on the second side surface; and

a third set of fire holes disposed on the third side surface.

18. The gas cooktop burner of claim 17, wherein the third side surface extends along a path that is not parallel to a radial line passing through the center point of the cover body.