JPH0342800U

JPH0342800U -

Info

Publication number: JPH0342800U
Application number: JP10046989U
Authority: JP
Priority date: 1989-08-30
Filing date: 1989-08-30
Publication date: 1991-04-23

Description

[Brief explanation of drawings]

第１図Ａはこの考案に係るウオータジエツト推
進装置の取水口構造の一実施例が適用されたウオ
ータジエツト推進装置の側方断面図、第１図Ｂは
、第１図ＡのＢ矢視図、第１図Ｃは第１図Ａの
グレイトを示す斜視図、第２図及び第３図は、第
１図Ａのウオータジエツト推進装置が搭載された
小型ジエツト推進艇を示すそれぞれ全体側面図及
び一部を切欠いて示す側面図、第４図Ａは第１図
Ａのウオータジエツト推進装置の一部を切欠いて
示す斜視図、第４図Ｂは第４図Ａの断面３０にお
いてＢ方向から見た断面図、第５図Ａは従来の
ウオータジエツト推進装置を示す側方断面図、第
５図Ｂは第５図ＡのＢ矢視図、第６図は第５図
Ａのウオータジエツト推進装置の一部を切欠いて
示す斜視図、第７図は従来の他のウオータジエツ
ト推進装置の一部を切欠いて示す斜視図である。１１……船体、１５……インペラ、１７……ス
テアリングノズル、１８……ウオータジエツト推
進装置、１９……取水口、２３……ダクト、２４
……グレイト、２５……格子、２６……渦流板、
２７……格子エレメント、２８……第１ベーン、
２９……第２ベーン。 FIG. 1A is a side sectional view of a waterjet propulsion device to which an embodiment of the water jet propulsion structure according to the present invention is applied, and FIG. 1B is a view taken in the direction of arrow B in FIG. Figure 1C is a perspective view showing the grate of Figure 1A, and Figures 2 and 3 are an overall side view and a partial view, respectively, of a small jet propulsion boat equipped with the waterjet propulsion device of Figure 1A. 4A is a cutaway side view, FIG. 4A is a partially cutaway perspective view of the waterjet propulsion device of FIG. 1A, and FIG. 4B is a cross-sectional view of section 30 in FIG. Fig. 5A is a side cross-sectional view showing a conventional waterjet propulsion device, Fig. 5B is a view taken along arrow B in Fig. 5A, and Fig. 6 is a partially cutaway view of the waterjet propulsion device in Fig. 5A. FIG. 7 is a partially cut away perspective view of another conventional waterjet propulsion device. 11... Hull, 15... Impeller, 17... Steering nozzle, 18... Water jet propulsion device, 19... Water intake, 23... Duct, 24
...Grate, 25...Grate, 26...Vortex plate,
27... Lattice element, 28... First vane,
29...Second vane.

Claims

[Scope of utility model registration request]

In a waterjet propulsion system, an impeller is installed in the duct, and the rotation of the impeller sucks water from the water intake at the tip of the duct and injects it from the nozzle at the rear end of the duct to propel the ship. is installed, and this grate has a lattice formed by arranging a plurality of lattice elements in the left-right direction of the hull, and a vortex plate fixed to this lattice and equipped with vanes tilted in different directions. A water intake structure for a water jet propulsion device, characterized in that it is configured as follows.