Combustor

Patent metadata

Field	Value
Publication number	US-10495302-B2
Application number	US-201715411326-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Sep 26, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A combustor is provided, including a pipe and a burner tray. The pipe is transverse U-shaped, including a first pipe section and a second pipe section. The first pipe section has an inlet, and the second pipe section has an outlet extending along an axial direction thereof. The second pipe section has at least one reduced section, wherein a smallest sectional area in the reduced section is smaller than sectional areas on both sides of the reduced section. The burner tray is connected to the second pipe section, provided over the outlet, and has a plurality of flame holes which communicate with the outlet. Whereby, with the reduced section, the flow including gas could be evenly delivered to the burner tray. As a result, after the gas exhausted through the flame holes is ignited, the combustion range would be evener, which enhances the combustion efficiency.

First claim

What is claimed is:

1. A combustor, comprising:
a pipe having a first pipe section and a second pipe section, wherein the first pipe section extends in a predetermined direction; the first pipe section has an inlet at an end thereof, and the second pipe section has a first end and a second end, wherein the first end is connected to another end of the first pipe section; the second pipe section is bent in a direction away from the another end of the first pipe section, and is provided over the first pipe section; the second pipe section has an outlet extending along an axial direction thereof, and a sectional area of the second pipe section is reduced from the first end to the second end; the second pipe section has at least one reduced section, wherein a smallest sectional area in the at least one reduced section is smaller than sectional areas on both sides of the reduced section; and
a burner tray connected to the second pipe section, wherein the burner tray is provided over the outlet, and has a plurality of flame holes which communicate with the outlet;
wherein the second pipe section has two opposite inner walls in the predetermined direction at where the second pipe section is bent; one of the inner walls near the inlet has a turning point; the at least one reduced section is located between the turning point and the second end of the second pipe section in the predetermined direction.

2. The combustor of claim 1 , wherein the at least one reduced section is formed by stamping.

3. The combustor of claim 1 , wherein the second pipe section has a first segment and a second segment, and the at least one reduced section connects the first segment and the second segment; a ratio of the smallest sectional area in the reduced section to a sectional area of a juncture of the reduced section and the first segment is defined as a first ratio, which is between 50% and 65%.

4. The combustor of claim 1 , wherein the outlet has a starting end and a terminal end, wherein the starting end is near the first end of the second pipe section, while the terminal end is near the second end of the second pipe section; a distance between the turning point and the terminal end in the predetermined direction is defined as a predetermined distance; a length of the at least one reduced section in the predetermined direction is 2% to 10% of the predetermined distance.

5. The combustor of claim 3 , wherein the at least one reduced section comprises a plurality of reduced sections, and the reduced sections comprise a first reduced section and a second reduced section; the first reduced section connects the first segment and the second segment; the second pipe section further has a third segment, wherein the second reduced section connects the second segment and the third segment.

6. The combustor of claim 5 , wherein a ratio of the smallest sectional area in the second reduced section to the sectional area of a juncture of the second reduced section and the second segment is defined as a second ratio, which is between 50% and 65%.

7. The combustor of claim 6 , wherein the second ratio is less than the first ratio.

8. The combustor of claim 3 , wherein the outlet has a starting end and a terminal end, wherein the starting end is near the first end of the second pipe section, while the terminal end is near the second end of the second pipe section; a distance between the turning point and the terminal end in the predetermined direction is defined as a predetermined distance; the first reduced section is provided within a first range between the turning point and the terminal end in the predetermined direction, wherein the first range is between 15% and 30% of the predetermined distance from the turning point.

9. The combustor of claim 5 , wherein the outlet has a starting end and a terminal end, wherein the starting end is near the first end of the second pipe section, while the terminal end is near the second end of the second pipe section; a distance between the turning point and the terminal end in the predetermined direction is defined as a predetermined distance; the first reduced section is provided within a first range between the turning point and the terminal end in the predetermined direction; the second reduced section is provided within a second range between the turning point and the terminal end in the predetermined direction; the first range is between 15% and 30% of the predetermined distance from the turning point, while the second range is between 45% and 65% of the predetermined distance from the turning point.

10. The combustor of claim 1 , wherein the outlet has a starting end and a terminal end, wherein the starting end is near the first end of the second pipe section, while the terminal end is near the second end of the second pipe section; the burner tray comprises two side plates which are connected to a periphery of the outlet of the second pipe section, wherein the two side plates are provided between the outlet and the flame holes; each of the two side plates has a wall, wherein the two walls face each other, and each of the two walls has a protrusion over the starting end.

11. The combustor of claim 1 , wherein the outlet has a starting end and a terminal end, wherein the starting end is near the first end of the second pipe section, while the terminal end is near the second end of the second pipe section; the burner tray comprises two side plates which are connected to a periphery of the outlet of the second pipe section, wherein the two side plates are provided between the outlet and the flame holes; each of the two side plates has a wall, wherein the two walls face each other, and each of the two walls has a protrusion over a region between the reduced section and the terminal end of the outlet.

12. The combustor of claim 1 , further comprising a metal net having a plurality of meshes, wherein the burner tray has an inner surface and an outer surface, wherein the flame holes run through the inner surface and the outer surface; the metal net is attached to the inner surface, and more than one meshes are located in a projection range of each of the flame holes.

13. The combustor of claim 1 , further comprising a splitting member provided within the burner tray, wherein the burner tray is elongated, and is defined to have a long axial direction and a short axial direction; the burner tray has a central block portion extending in the long axial direction; the flame holes comprises a plurality of first flame holes and a plurality of second flame holes, wherein the first flame holes and the second flame holes are respectively aligned on two sides of the central block portion along the long axial direction; the splitting member has a passage and a plurality of perforations, wherein the passage extends along the long axial direction of the burner tray, and is provided right under the central block portion; the perforations are aligned in the long axial direction, and are distributed to two sides of the passage in the short axial direction.

14. The combustor of claim 13 , further comprising a metal net having a plurality of meshes, wherein the burner tray has an inner surface and an outer surface, wherein the flame holes run through the inner surface and the outer surface; the metal net is attached to the inner surface, and more than one meshes are located in a projection range of each of the flame holes.

15. The combustor of claim 13 , wherein the burner tray has a top portion protruding in a direction from the inner surface to the outer surface.

16. The combustor of claim 1 , wherein the burner tray is elongated, and is d

Assignees

• Grand Mate Co Ltd

Inventors

• Huang Chung-Chin
• Huang Chin-Ying
• Huang Hsin-Ming
• Huang Hsing-Hsiung
• Yeh Yen-Jen
• Chen Wei-Long
• Lin Kuan-Chou
• Luo Tang-Yuan

Classifications

• F23D14/583

  of elongated shape, e.g. slits · CPC title

• F23D2213/00

  Burner manufacture specifications · CPC title

• F23D14/586

  formed by a set of sheets, strips, ribbons or the like · CPC title

• F23D14/14 Primary

  using screens or perforated plates · CPC title

• F23D14/045

  with a plurality of burner bars assembled together, e.g. in a grid-like arrangement · CPC title