JPH02119998U

JPH02119998U -

Info

Publication number: JPH02119998U
Application number: JP2846189U
Authority: JP
Priority date: 1989-03-15
Filing date: 1989-03-15
Publication date: 1990-09-27

Description

[Brief explanation of drawings]

第１図は第１の本考案による遠心インペラの一
例を示す要部構造断面図、第２図は第１図の−
線断面図、第３図はその一部概観斜視図、第４
図は第２の本考案による遠心インペラの一例を示
す要部構造断面図、第５図は各第３及び４の本考
案による遠心インペラの構造平面断面図、第６図
は従来の遠心インペラを示す要部構造断面図であ
る。１……遠心インペラ、２……主流路、３……第
１側板、４……小羽根、５……主羽根、６……ケ
ーシング流路壁、７……第２側板、８……小流路
、９……スリツト。 Fig. 1 is a cross-sectional view of the main part of an example of the centrifugal impeller according to the first invention, and Fig. 2 is a -
Line sectional view, Figure 3 is a partial perspective view, Figure 4 is a partial perspective view.
The figure is a cross-sectional view of the main part structure of an example of the centrifugal impeller according to the second invention, FIG. 5 is a structural plan cross-sectional view of the centrifugal impeller according to the third and fourth inventions, and FIG. FIG. 1... Centrifugal impeller, 2... Main flow path, 3... First side plate, 4... Small blade, 5... Main blade, 6... Casing channel wall, 7... Second side plate, 8... Small Channel, 9...slit.

Claims

[Claims for Utility Model Registration] 1. In a closed-type centrifugal impeller in which a side plate is attached to the main blade, the impeller is fixed on the outer periphery of the first side plate near the main flow passage inlet of the centrifugal impeller, and the mounting angle is set in the rotation direction relative to the main blade. a large number of small blades arranged at right angles to each other, a second side plate attached to the small blades, a small flow path surrounded by and formed between the second side plate and the small blades, and a rear end of the small flow path. A centrifugal impeller comprising: a slit opening on a first side plate and communicating with the main flow path. 2 In a closed-type centrifugal impeller with a side plate attached to the main blade, a large number of impellers are fixed on the outer periphery of the first side plate near the main flow channel entrance of the centrifugal impeller, and whose mounting angle is closer to perpendicular to the rotation direction than the main blade. a small blade, a second side plate attached to the small blade, a small flow path formed between the small blades and surrounded by a casing flow path wall, and an opening on the first side plate on the rear end side of the small flow path. and a slit communicating with the main flow path. 3. In a closed-type centrifugal impeller with a side plate attached to the main blade, the impeller is fixed on the outer periphery of the first side plate near the main flow channel entrance of the centrifugal impeller at approximately the same mounting angle as the main blade, and an appropriate number of blades are added compared to the number of main blades. A large number of small blades, a second side plate attached to the small blades, a small flow path formed by surrounding between the second side plate and the small blades, and a first side plate on the rear end side of the small flow path. A centrifugal impeller comprising a slit that is open and communicates with the main flow path. 4 In a closed-type centrifugal impeller with a side plate attached to the main blade, the first
A large number of small blades fixed on the outer periphery of the side plate at approximately the same mounting angle as the main blades, and a number of small blades added to an appropriate number compared to the number of main blades, and a small flow path formed between the small blades and surrounded by the casing flow path wall. , the first on the rear end side of the small flow path
A centrifugal impeller comprising a slit opening on a side plate and communicating with the main flow path.