Check-valve mechanisms for a pulse combustion apparatus

• US 4,955,805 A
• Filed: 02/13/1989
• Issued: 09/11/1990
• Est. Priority Date: 06/04/1988
• Status: Expired due to Term

• Current Assignee: Paloma Kogyo Kabushiki Kaisha (Paloma Co., Ltd.)
• Original Assignee: Paloma Kogyo Kabushiki Kaisha (Paloma Co., Ltd.)
• Inventors: Hayakawa, Tsuneyasu, Ishiguro, Katsusuke, Yokoyama, Nobuyoshi
• Primary Examiner(s): Price, Carl D.
• Application Number:
  US07/310,335
• Time in Patent Office: 575 Days
• Field of Search: 431/1, 122/24, 60/249, 60/39.76, 60/39.77, 60/39.8, 137/512.1
• US Class Current: 431/1
• CPC Class Codes: F23C 15/00 Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass for generating combustion products of high pressure or high velocity F23R7/00; starting devices F23D11/42
• CPC Class Codes: Y10T 137/7839 Dividing and recombining in a single flow path

Abstract

A check-valve mechanism of a pulse combustion apparatus for passing air into a mixing chamber includes (i) a partition wall separating an air inlet chamber and the mixing chamber from each other, (ii) a plurality of rear discs of relatively small diameters spaced apart from the partition wall and located inside the mixing chamber, and (iii) a plurality of front discs, or valve members, located between said partition wall and said rear discs; respectively. The circular portions of the partition wall which overlies the respective valve members (as viewed from the side of the air inlet chamber) each have a plurality of radially-extended elongate openings for passing air into the mixing chamber. Each rear disc has a plurality of small circular openings. Each valve member is axially movable between the partition wall and the associated rear disc, thereby opening and closing the elongate openings. A check-valve mechanism for passing fuel gas into a gas distributing chamber includes (i) an outlet-side wall of a fuel gas intlet chamber, (ii) a rear disc spaced apart from the outlet-side wall in a downstream direction and located outside the gas inlet chamber, and (iii) a front disc, or valve member, located between the foregoing outlet-side wall and the rear disc. The outlet-side wall of the gas inlet chamber has a plurality of radially-extended elongate openings for passing fuel gas into the gas distributing chamber.

Claims

1. A check-valve mechanism of a pulse combustion apparatus for passing air into a mixing chamber, comprising

(i) a partition wall separating an air inlet chamber and said mixing chamber from each other,

(ii) a plurality of associated rear discs of relatively small diameters spaced apart from said partition wall and located inside said mixing chamber,

(iii) a plurality of associated front discs, or valve members, of substantially the same diameters as said rear discs which are located between said partition wall and said rear discs and are each formed of woven fabric of carbon fiber coated with fluorocarbon resin,

(iv) each said rear disc, the valve member associated therewith, and a circular portion of said partition wall which overlies the valve member as viewed from the side of said air inlet chamber each having a central opening and being joined together by bolt means which passes through the central openings thereof,

(v) the circular portions of said partition wall each having around the central openings thereof a plurality of radially-extended elongated openings for passing air from said air inlet chamber into said mixing chamber,

(vi) each said rear disc having around the central opening thereof a plurality of small circular openings which do not overlap the elongated openings of the circular portion of said partition wall corresponding to the rear disc as viewed from an axial direction, and

(vii) each said valve member being axially movable between said partition wall and the associated rear disc, thereby opening and closing said elongated openings of the associated circular portion of said partition wall.

2. A check-valve mechanism of a pulse combustion apparatus for passing fuel gas from a fuel gas inlet chamber into a fuel gas distributing chamber, comprising

(i) an outlet-side wall of said fuel gas inlet chamber,

(ii) a single rear disc spaced apart from said outlet-side wall in a downstream direction and located outside said fuel gas inlet chamber,

(iii) a single front disc, or valve member, located between said outlet-side wall and said rear disc and formed of woven fabric of carbon fiber coated with fluorocarbon resin,

(iv) said outlet-side wall, said valve member and said rear disc having central openings and being joined together by bolt means which passes through the central openings thereof,

(v) said outlet-side wall having around the central opening thereof a plurality of radially-extended elongate openings for passing fuel gas from said fuel gas inlet chamber into said fuel gas distributing chamber,

(vi) said rear disc having around the central opening thereof a plurality of small circular openings which do not overlap the elongate openings of said outlet-side wall as viewed from an axial direction, and

(vii) said valve member being axially movable between said outlet-side wall and said rear disc, thereby opening and closing said elongate openings.