Liquid fuel burner

• US 4,934,924 A
• Filed: 08/24/1987
• Issued: 06/19/1990
• Est. Priority Date: 11/12/1985
• Status: Expired due to Fees

• Current Assignee: Gary T. Nakai
• Original Assignee: Gary T. Nakai
• Inventors: Nakai, Gary T.
• Primary Examiner(s): Bennet, Henry A.
• Application Number:
  US07/089,237
• Time in Patent Office: 1,030 Days
• Field of Search: 126/101, 126/145 R, 126/12.3 C, 126/110 B, 126/110 C, 431/326, 431/325, 431/328, 237/12.3 C
• US Class Current: 431/41
• CPC Class Codes: B60H 1/2209 arrangements of burners for heating an intermediate liquid B60H1/032 takes precedence
• CPC Class Codes: B60H 2001/224 automatic operation, e.g. control circuits or methods
• CPC Class Codes: B60H 2001/2271 Heat exchangers, burners, ignition devices
• CPC Class Codes: F02B 3/06 with compression ignition compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02
• CPC Class Codes: F02N 19/10 by heating of engine coolants
• CPC Class Codes: F23D 3/40 the capillary action taking place in one or more rigid porous bodies
• CPC Class Codes: F24H 1/285 with the fire tubes arranged alongside the combustion chamber
• CPC Class Codes: F28D 7/1669 the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube

Abstract

A liquid fuel burner is disclosed, comprising a cup-shaped housing having a fuel inlet; a plate enclosing the top of the housing, the plate having fuel passages therethrough; a wick on the outer surface of the plate communicating with the fuel passages; and a liquid fuel pump for delivering fuel under pressure to the inlet of the housing for conveying liquid fuel under pressure into the housing, through the fuel passages and into the wick. The burner is provided with a check valve upstream of the fuel inlet to the housing, the valve having a closure member biased in an upstream direction. The burner is ignited by a glow plug adjacent the housing and starter wick between the burner wick and glow plug.

Claims

1. A liquid fuel burner, comprising:

(a) a housing having an open top and a fuel inlet;

(b) a plate enclosing the top of said housing, said plate having fuel passages therethrough;

(c) wick means on the outer surface of said plate, said wick means communicating with said fuel passages;

(d) means for pressurizing fuel within said housing to a pressure above atmospheric pressure for propelling fuel through said fuel passages and into said wick means; and

(e) said plate and said wick means being made from a porous heat resistant material, said wick means and said plate being a unitary member.

2. A burner as in claim 1, wherein said heat resistant material is porous ceramic material.

3. A burner as in claim 1, wherein said heat resistant material is porous sintered metal.

4. A burner as in claim 1, wherein said wick means comprise a plurality of radially disposed ribs projecting from said plate.

7. A burner as in claim 1, further comprising a valve adjacent the fuel inlet to said housing, said valve having a closure member and means for biasing said closure member in an upstream direction to a closed position.

8. A burner as in claim 1, further comprising means for igniting said burner.

9. A burner as in claim 8, wherein said means for igniting comprises:

(a) a glow plug adjacent to said housing; and

(b) a starter wick, one end of said starter wick proximate to said glow plug and the other end adjacent said wick means.

10. A burner as in claim 9, further comprising means for directing air around said glow plug.

11. A burner as in claim 1, wherein said means for pressurizing fuel comprises a fuel pump in fluid communication with and upstream of the inlet to said housing.

12. A burner as in claim 7, wherein said means for pressurizing fuel comprises a fuel pump in fluid communication with and upstream of said valve, said pump pressurizing said fuel to shuttle said closure member in a downstream direction to an open position for conveying fuel through said valve and into said housing.

5. A liquid fuel burner, comprising:

(a) a housing having an open top and a fuel inlet;

(b) a plate enclosing the top of said housing, said plate having fuel passages therethrough;

(c) wick means on the outer surface of said plate, said wick means communicating with said fuel passages;

(d) means for pressurizing fuel within said housing to a pressure above atmospheric pressure for propelling fuel through said fuel passages and into said wick means; and

(e) said plate having a first pattern of grooves in its outer surface and a second pattern of grooves, intersecting said first pattern, in its inner surface, the intersection of said groove patterns forming said fuel passages.

6. A burner as in claim 5, wherein said wick means comprises stainless steel mesh, said mesh secured in the first pattern of grooves in said plate.