FUEL INJECTION NOZZLE

• Main Authors: OHORI HITOSHI, TATSUTA KOJI, INOUE HITOSHI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• Subjects: AIR; BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN; WEAPONS

PROBLEM TO BE SOLVED: To provide a fuel injection nozzle capable of improving maintainability by suppressing adhesion of sludge to a tip part.SOLUTION: A fuel injection nozzle includes a nozzle body 13 having a circular outer peripheral face 11 when observed from a shaft center P direction, and disposed in a state that injection holes 12 are opened at a tip and a basic end along the shaft center P direction, a liquid fuel injection path for injecting a liquid fuel and a gas fuel injection path for injecting a gas fuel are connectably disposed at a basic end side of the injection hole 12, a tip-side part of the nozzle outer peripheral face 11 as the outer peripheral face 11 of the nozzle body 13 is formed into the shape composed of a taper face portion 11b gradually reduced in a diameter toward the tip side, and a straight face portion 11a extended from the tip of the taper face portion 11b to the tip side in parallel or substantially in parallel with the shaft center P, the tip of the nozzle outer peripheral face 11 is formed at the tip of the straight face portion 11a, and a tip face 14 orthogonal to the shaft center P, is disposed on the tip of the nozzle body 13.SELECTED DRAWING: Figure 2 【課題】先端箇所へのスラッジの付着を抑制して、メンテナンス性を向上し得る燃料噴出ノズルを提供する。【解決手段】軸心Ｐ方向視で円状の外周面１１を有し、噴出孔１２が軸心Ｐ方向に沿い且つ先端と基端とに開口する状態で設けられたノズル本体１３を備え、噴出孔１２の基端側に、液体燃料を噴出する液体燃料噴出路と、ガス燃料を噴出するガス燃料噴出路とが連通接続可能に構成され、ノズル本体１３の外周面１１であるノズル外周面１１の先端側の部分が、先端側ほど小径となるテーパ面部１１ｂと、当該テーパ面部１１ｂの先端から軸心Ｐに平行又は略平行に先端側に延びるストレート面部１１ａとからなる形状に構成されて、当該ストレート面部１１ａの先端にて、ノズル外周面１１の先端が形成され、ノズル本体１３の先端に、軸心Ｐに直交する状態の先端面１４が備えられている。【選択図】図２