US918358A

US918358A - Blower.

Info

Publication number: US918358A
Application number: US40710307A
Authority: US
Inventors: Amon T Noe
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-12-19
Filing date: 1907-12-19
Publication date: 1909-04-13
Anticipated expiration: 1926-04-13

Description

A. T. NOE.

BLOWER.

APPLICATION FILED DEG.19, 1907.

s'rA'r s PATENT OFFICE.

Anon T. NOE, or PARNASSUS,PENNSYLVANIA.

To all whom it may. concern:

. Specification 0! Letters Patent.

Application filed December 19, 1907. sem No. 407,103.

BLOWER.

I Patented April 13, 1909.

driven forward positively toward the outlet.

Be it known that I, Aaron '1. Non, a resi- 2' After passing outlet 4 the blades similarly fit dent of lf'arnassus, in the county of Westmoreland and State of Pennsylvania, have invented certain new and useful Improvements in Blowers, of which the following is a specification.

The primaryobject of this invention is to provide for forcing a large volume of air un-. der an effective pressure. I accomplish this by so arranging the inlet as to secure a maxi- 'mum inflow, and by maintaining the inlet and outlet. out of direct communication, so that an effective dischargin pressure is maintained on the air pockets between any two bladesall the while such blade-separating space is in communication with the'outlet, none of the air under discharge escaping backwardly through the inlet, and hence none of the discharging pressure is wasted. In the accompanying drawings, Figure 1 is a side elevation of the blower, partly broken to show the interior thereof. Fig. 2 is a sectional view on line 2-2 of Fig. 1.

Referring to the drawings, 2 is the rim-like peripheral wall of the circular casing, and 3 is one side wall thereof which, in the embodiment here shown, is straight or flat with the blades in operative proximity thereto as they are with rim 2. Rim 2 and wall 3 may be cast integral, with the rim enlar ed to form outlet chamber 4 through which the air is forced.

5 is the circular head which, in the present embodiment, closes the open side of the casing opposite wall 3, being secured to rim 2 by screws 6. Secured to the central shaft 7 are the similarly curved radial blades 8, all so arranged that their convex faces move toward and drive the air into the outlet 4. The portion of head 5 diametrically opposite outlet 4 is enlarged or bulged outwardly at 9 and provided with 'air inlet 10 to which a pipe may be connected for drawing air from any desired source. The fiat portion 11 of head 5 adjacent outlet 4 provides a close fit for the blades, such as is afforded by all portions of wall 3 and the rim excepting where the latter blade have a working fit, so that when a blade is passing therethrough no air can escape from its ront or convex side to its rear or concave side and to the inlet, all the air being the casing interior between lines 0 and d, the space being of such area and the blade-separating spaces so proportioned that no such s ace can at once communicate with the b ower inlet and outlet.

Inlet enlargement 9 communicates at the same time with the inner portions of several of the blade-separating spaces, or those portions nearest shaft 7, the most effective point of suction, so that a maximum volume of air is drawn inward. With the inletand outlet completely separated, all of the air is driven forward into the outlet under an effective pressure, there being no opportunity for any of it to escape backwardly to the outlet as would be the case if the inlet and outlet were in direct communication. The blowerrotates at high speed, and by admitting the air to the blade-so )arating s aces inwardly from the outer en 3 of the b ades, it is obvious that those spaces are more com letely filled and are filled with a greater vo ume of air and at less resistance than though the air were admitted at the periphery of the casing. A centrifugal force of considerable momentum is generated by the rapidly revolving blades which tends to throw the air outwardly from the blade ends, and this action would retard the admission of air at any oint along the periphery of the chamber. ith the bladeseparating spaces out of communication with the air inlet whilc discharging, the full accumulation of centrifugal force is available for throwing the air in large volume and with much force into the outlet. whereas, if the discharging spaces were in communication with the inlet it is clear that the volume of air discharged and the force of the discharge would be greatly diminished While have here shown and described the blower in its preferred embodiment, the same may be varied without departing from the spirit and scope of the appended claims.

I claim:

1. A blower consisting of a casing having an outlet, a series of blades rotatable within the casing, the casing having an air inlet open to several of the blade-separating s aces adjacent the inner ends of the blades, t e blades so fitting the casing and so spaced apart that no blade-soparating space communicates simultaneously with the casing inlet and outlet.

2. A blower consisting of a circular casing having an outlet leading from its periphery, a series of blades rotatable within the casing on a central shaft, the interior of the casing forming the approach to the outlet and a portion thereof beyond the outlet beinglof such size that the blades closely fit the same when approaching the outlet and after passing the same; the casing having an air inlet o en t0 the inner portions of several of the approaching the outlet, those portions of the casing interior at opposite sides of the outlet being of such size that the blades closely fit the same, one side of the casing having an air inlet communicating with the inner portions of several of the blade-separating spaces, the curved blades being so spaced apart that no blade-se arating space conimunicates simultaneous y with the inlet and outlet.

4. A blower consisting of a circular casing having an outlet leadin from its periphery, a series of blades rotata le within the casing on a central shaft, those portions of the easing interior at opposite sides of the inlet being of such size that the blades closely fit the same, a side wall of the casing having a lateral air-inlet enlargement on the opposite side of the blade shaft from the outlet with the inlet communicating with-several of the blade-separating spaces, the blades being so spaced apart that the inlet and outlet are never in open communication.

In testimony whereof I aflix my signature in presence of two witnesses.

' AMON T. NOE. Witnesses:

JNO. J. FITZGERALD, J. M. Nnssrr.