| 摘要 |
<p>PURPOSE: To immediately stop outflow of fluid by stop of a pump by making the cross-sectional area of a valve member of a guide part adjacent to a valve seat correspond to the cross-sectional area of a closure member, in a stop valve of a pressure atomizing nozzle of a hydraulically heating device. CONSTITUTION: In a pressure atomizing nozzle 50, pressure oil from a feed pump is fed into a passage 54 through a filter 53. When pressure acting on a ball 66 from an inlet 67 of a valve 55 is increased higher than a set pressure of a spring 68, the ball 66 is pressed up, and fluid is allowed to flow into a valve chamber 64 through a groove 70. Heating oil is allowed to flow from an outlet 65 through a radial filter passage 73, an annular passage 74 and a spiral groove 77, and it is atomized from a nozzle hole 78 through a nozzle cone 76. The guide part of the valve chamber 64 has the size approximately equal to the outside diameter of the ball 66. When the feed pump is stopped, the ball 66 is immediately lowered to close the inlet and to stop atomization.</p> |
