Burner provided with flame hole member having air holes

Patent metadata

Field	Value
Publication number	US-10151478-B2
Application number	US-201615245627-A
Country	US
Kind code	B2
Filing date	Aug 24, 2016
Priority date	Feb 25, 2014
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

An object of the present disclosure is to provide a pre-mixed burner capable of preventing a backfire, improving flame stability, and responding to various combustion loads. To attain the object, the present disclosure is implemented by including a flame hole member made of a foam body which is made from a plurality of metal alloys through a sintering process and in which an air hole being a space between struts configuring a framework is formed, and configured to form a flame by allowing a mixed gas of gas and air to be sprayed through the air hole, a flame hole member fixing plate configured to fixedly couple the flame hole member to a burner main body, and a distributing plate provided in front of the flame hole member and at which a plurality of distributing holes are formed so as to uniformly supply the mixed gas to the flame hole member.

First claim

What is claimed is:

1. A burner comprising:
a flame hole member made of a foam body which is made from a plurality of metal alloys through a sintering process and in which an air hole being a space between struts configuring a framework is formed, and configured to form a flame by allowing a mixed gas of gas and air to be sprayed through the air hole;
a flame hole member fixing plate configured to fixedly couple the flame hole member to a burner main body; and
a distributing plate provided in front of the flame hole member and at which a plurality of distributing holes are formed so as to uniformly supply the mixed gas to the flame hole member,
wherein the air hole is configured with multiple cells and multiple pores, each of the multiple cells being an inner space surrounded by the struts and each of the multiple pores being a space in which the cell is connected to a cell adjacent thereto, and an average size of the multiple cells being formed per unit volume of the flame hole member is equal to or less than 1200 μm.

2. The burner of claim 1 , wherein a plurality of compressed portions are concavely pressed and compressed to be formed at a one side surface of the flame hole member and to be spaced apart from each other at a regular interval, the plurality of compressed portions are formed to be thinner as compared to a thickness of a non-compressed portion and are surrounded by the non-compressed portion.

3. The burner of claim 1 , wherein a size of the cell is defined by the following Equation,
D=√{square root over (ab)}   [Equation]

wherein D represents the size of the cell, a represents a major axis length of the cell, and b represents a minor axis length thereof.

4. The burner of claim 1 , wherein an occupying ratio of the air hole per unit volume of the flame hole member is equal to or greater than 80%.

5. The burner of claim 1 , wherein a plurality of compressed portions are concavely pressed and compressed to be formed at a surface of the flame hole member and to be spaced apart from each other at a regular interval.

6. The burner of claim 5 , wherein a through hole is formed inside each of the plurality of compressed portions to pass through in a thickness direction of the flame hole member.

7. The burner of claim 5 , wherein a through hole is formed between the plurality of compressed portions to pass through in a thickness direction thereof.

8. The burner of claim 5 , wherein the compressed portion is configured with multiple first compressed portions spaced apart from each other at a regular interval, and each of multiple second compressed portions formed between the multiple first compressed portions to have a size smaller than that of each of the multiple first compressed portions.

9. The burner of claim 1 , wherein a plurality of through holes are formed at the flame hole member to pass therethrough in a thickness direction thereof and to be spaced apart from each other at a regular interval.

10. The burner of claim 1 , wherein the distributing plate is coupled to the flame hole member fixing plate via the flame hole member interposed between the distributing plate and the flame hole member fixing plate.

11. The burner of claim 10 , wherein a protrusion is formed at the distributing plate to be come into contact with a rear surface of the flame hole member, thereby separating the distributing plate from the rear surface of the flame hole member.

12. The burner of claim 11 , wherein the protrusion is formed at an outer circumference of a region at which the plurality of distributing holes are formed.

13. The burner of claim 10 , further comprising:
a gap plate configured to separate the distributing plate from the flame hole member, wherein the gap plate is formed to surround a region at which the distributing holes are formed.

14. The burner of claim 1 , wherein the plurality of metal alloys include nickel (Ni), chrome (Cr), and aluminum (Al).

Assignees

• Kyungdong Navien Co Ltd
• Alantum Co Ltd

Inventors

• Park June Kyu
• Kim Gi Young

Classifications

• F23D2203/106

  Assemblies of different layers · CPC title

• F23D2212/20

  metallic · CPC title

• F23D14/58 Primary

  characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration · CPC title

• F23D2203/1017

  curved · CPC title

• F23D2203/1055

  with a specific void range · CPC title