US2169233A

US2169233A - Blower apparatus

Info

Publication number: US2169233A
Application number: US176900A
Authority: US
Inventors: Alexander I Ponomareff
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1937-11-27
Filing date: 1937-11-27
Publication date: 1939-08-15
Anticipated expiration: 1956-08-15

Description

Aug. 15, 1939 A. 1. PONOMAREFF BLOWER APPARATUS Original Filed Nov. 27, 1937 INVENT'OR H1. sxmvnsn I PONOMHREFF- Patented Aug. 15, 1939 UNITED STATES PATENT OFFICE BLOWER APPARATUS Alexander I. Pononiarefl', Drexel Hill, Pm, assignor to Westinghouse Electric a Manufacturing Company, East Pittsburg of Pennsylvania Pa, in poration 2 Claims.

My invention relates to propeller blowers and it has for an object to provide baflle means at the discharge side of the propeller for resisting recirculation in order to reduce pressure fluctuations s or pulsations.

In the application of Warren B. Flanders, Serial No. 183,727, filed September 14, 1937, there is disclosed and claimed baffles for resisting recirculation in propeller blowers in order to reduce presl sure fluctuations or pulsations. In said application, bailies are shown arranged adjacent to the inlet edges of propeller blades or incorporated in the propeller. I find that baflle means arranged contiguously, to the leaving edges of a propeller 16 is also effective for the same purpose.

P These and other objects are effected by my invention as will be apparent from the following de-.

scription and claims taken in connection with the accompanying drawing forming a part of this 20 application, in which:

Fig. l is a vertical sectional view of a propeller blower incorporating the preferred form of my improved baifle means;

Figs. 2 and 3 are views showing further forms as of the baiile means; and,

Fig. 4 is a detail view showing a modified form of baflie support.

In the drawing, there is shown a propeller blower, at ill, including stator structure, at H. 80 and rotor structure, at II, the rotor structure including a propeller l3 and its drive shaft I4 and the stator structure including a casing I5 connected by guide vanes It to the shaft tube II,

the guide vanes being at the discharge side of the propeller. In accordance with my invention, circumferentially-extending bailie means It has its inletedge I I arranged as close as practicable to the discharge edges 20 of the propeller blades and its extends axially, or in the direction of fluid flow,

to such an extent as to aflord adequate resistance to recirculation.

The baille means It is carried by the stator as structure, at H, preferably by the guide vanes l6,

the inlet edge ll ofthe baille extending forwardly of the inlet edges of the guide vanes l6.

While the circumferentially-extending bafile means is preferably circular, as shown at I8 in Fig. 1, it may be comprised by a plurality of sections 2|, as shown in Fig. 2 or sections 21a as shown in Fig. 3, which collectively serve the same purpose.

While, in Figs. 1, 2 and 3, the baflle means is carried by the guide vane part of the stator structure, it will be obvious that it may be carried by any other suitable part thereof, for example, in Fig. 4, such baiile means 22 is supported by arms 23 from the interior of the casing it.

While I have shown my invention in several forms, it will be obvious to those skilled in the art that it is not so limited but is susceptible of various other changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior 'art or as are specifically set forth in the appended claims.

'What I claim is:

1. In a propeller blower, a rotor structure including a propeller, a stator structure including a casing encompassing the propeller, guide vanes at the discharge side of the latter, and circumferentially-extending bai'ile means carried by the stator structure, said baiiie means extending in the direction of fluid fiow and having its inlet edge disposed contiguously to the leaving edges of the propeller blades so as to resist recirculation of medium translated by the propeller.

2. In a propeller blower, a casing, a propeller in the casing, guide vanes at the discharge side of the propeller, and circumferentially-extending baflle means carried by the guide vanes, said baffie means extending in the direction of fluid flow and having its inlet edge arranged forwardly oi 40 the inlet edges of the guide vanes so as to be disposed contiguously to the leaving edges of the propeller blades so as to resist recirculation of medium translated by the propeller.

ALEXANDER I. PONOMAREFF. 45