US1911603A

US1911603A - Spbayes

Info

Publication number: US1911603A
Authority: US
Publication date: 1933-05-30
Anticipated expiration: 1950-05-30

Description

y 1933- A. A. BREUER 1,911,603

SPRAYER Filed Aug. 20, 1931 2 Sheets-Sheet 2 Patented May 30, 1933 UNITED STATES ADAM A. BREUEB, OF CHICAGO, ILLINOIS SPRAYEL Application filed .August 20, 1931. Serial No. 558,248.

The present invention relates to a sprayer and more particularly to a" small compact portable for spraying liquids.

An object of the present invention is to provide acompact readily portable and usable sprayer which will eifectively discharge liquid in the form of a fine mist.

Another object of the invention is" to provide a sprayer unit consisting of a motor, air

' compressor, and liquid container, all axially arranged for compactness and ease of operation and use.

A further object if the invention is to provide a portable sprayer wherein the liquid is discharged solely by ejector action.

Generally speaking the invention contemplates a unit consisting of motor, motor casing, compressor and liquid container, all axially arranged in compact form.

The invention further contemplates an outlet conduit communicating with the interior of the receptacle, having a discharge orifice adjacent the discharge orifice from the compressor portion so that the contained liquid is discharged with ejector action.

The invention further contemplates the use of a compressor including a chamber with a rotor therein which rotor is provided with blades vor vanes which move outwardly 0 under centrifugal action as the rotor is rotated by the motor, the vanes or blades actin to compress the air within the chamber an discharge the same through the air discharge nozzle.

The above other and further objects of the invention will be apparent from the following description, accompanying drawings, and appended claims.

The accompanying drawings illustrate a.

sprayer embodying the principles of the present invention and the views thereof are as follows:

Figure 1 is a vertical central sectional view through a sprayer unit embodying the principles of the present invention.

Figure 2 is a bottom plan view of the compressor member showing the compressor chamber and the rotor and heat radiating o fins. This view has eliminated therefrom a 5 bottom plate for the rotor which forms a trie supply.

part of the compression chamber, the plate being removed for convenience in illustrating details of construction.

Figure 3 is a. fragmental sectional vlew taken substantially in the plane of line .55 III1II of Figure 1 and showing details of construction.

The form of apparatus shown to exemplify the present invention comprises a motor casing 1 to which is attached a hollow handle 2 having therein a switch 3 which is suitably connected to the usual conductors not shown for putting the motor in circuit with an elec-.

The motor is designated generally as A and is provided with the usual motor shaft 4, vertically disposed, the upper end of which is supported in bearing 5 in the casing 1 and the lower end of which extends through a lower bearing 6 where its outer end is slotted at 7 The motor shaft is provided with fan blades 8 for cooling the motor in operation. The casing 1 is provided with'air inlet holes 9 for the admission of air to the interior of the casing for cooling purposes. '7 The compressor member in the present instance consists of a casting B having a flange portion 10 which is secured to the motor casing 1 by screws or bolts 11 and which is provided. with a plurality of cooling fins 12 which are centrally connected to a centrally disposed hub or boss 13. This boss extends upwardly at 14 to receive the bearing 6 and downwardly for the formation therein of the compressor chamber. The compressor, chamber 15 is 'a bor formed in the boss 13 which is somewhat elliptical in outline and being eccentrically arranged with respect to the axis of the motor shaft 4. The compressor member B is cast preferably from aluminum for the sake of lightness in which event the compressor chamber15 is provided with a cast iron lining 16 which is put in place in the mold at the time the member B is cast so that the aluminum constituting said casting is cast about the lining 16. In this manner the hardened interior surface or lining is provided for the compressor chamber.

The rotor 17 consisting of a cylindrical are shown, which intersect the radii of the rotor and extend inwardly from the surface of the rotor to points near the rotor center. -In everyone of these slots 19 is a blade or vane 20 having its outer end curved to conform to the contour of the compressor chamber 15. These blades or vanes move outwardly under centrifugal action whenever the rtor 17 is rotated by the motor. The outer ends of the blades or vanes closely conforming to the sides or lining of the compressor chamber and move inwardly as the vanes approach that portion of the motor chamber which is substantially in contact with a portion of the side surface of the rotor as it is for a part of the travel of the same.

The casting B is provided with an inlet port 21 communicating with the compressor chamber and an outlet port 22 also communicating with the compressor chamber 15 0 but disposed at approximately 180 from the inlet port in the direction of travel of the rotor. An air discharge nozzle 23 is inserted in the end of the air outlet port 22.

Figures 2 and 3 illustrate various positions of the blades or vanes assumed by the blades in various positions of rotation of the rotor.

It will be observed that the air inlet communicates with the air compressor chamber 15 at the beginning of the zone of greatest capacity whereas the air outlet 22 communicates' therewith at the zone of, least capacity or at the point of maximum compression. In this manner, successful air compression is accomplished by a rotor of the character herein subscribed and illustrated.

The bottom of the compressor chamber 15 1s formed by a plate 24 which is fastened against the bottomv side of the member B,

) by screws engaging screwholes 25 therein formed. The several fins 12 are cut at 26 to receive the plate so that the same may enter and seat against the bottom of the boss 13 of them-amber B.

A block 27 having an L-shaped passage 28 therethrough is applied against the plate 24. Communicating with one end of the passa e 28 is a pipe 29 which extends downwardly into the interior of the liquid container 30. The pipe 29 may be straight as shown in full lines in Fi ure 1 or may have its lower end curved as s own in dotted lines in said figure. This pipe is threaded into the block 27 to communicate with the passage 28.

'55 Another pipe 31 is threaded into the other end of the passage 28-and extends outwardly V of the block 27 with the outer end of the pipe closed asat 32, with a lateral discharge out-. let 33. The orifice of the discharge outlet 33 s disposed adjacent the orifice of the discharge nozzle 23 from the compressor chamber so that whenever the compressor is actuated liquid willbe discharged from the container-30 by ejector action.

The pipe 31 and its discharge orifice 33 are so related and arranged in the block 27 as to be susceptible of imparting a slight swinging movement to the outlet 33 to vary the effectiveness of the ejector action. This is possible because the pipe 31 is threaded into the block 27, and is fitted loose enough for such adjustment. That is, if this is moved sideways a little bit, then the discharge will be less than if the orifice is directly in front of the orifice in the outlet nozzle 23.

The container 30 is provided with a threaded neck 34 which cooperates with a threaded can top 35 retained against the block 27 by a washer 36 of cork or like substance to effect a tight sealing, which washer and top are retained against the block by means of screws 37 which pass through the block 27 and engage the casting B. i

It will be obseryed that the axis of the container 30 and of the motor A are. axially aligned thus making a compact balance and readily usable sprayer unit.

I The'dis'charge of the liquid by ejector action createsa fine misty discharge which is especially useful when the sprayer is used to discharge insecticide or like liquid, and where a misty discharge is desired. Utilization of the ejector action for discharging the contained liquid enables discharge of the liquid even when the container 30 is disconnected from its top andheld a slight distance therefrom as the ejector action is sufiicient to lift the liquid and discharge the same even though the contents of the container 30 be exposed to the atmosphere The unit as manufactured is made of light material such as aluminum so as to be readily and handily usable for spray discharge within a room when used with insecticide. It is equally useful in connection with the spray discharge of other liquids dischargeable with such a sprayer as this.

The utilization of the iron lining 16 for the compressor chamber enables the use of aluminum in forming the compressor member B as otherwise were there no such lining as the cast iron lining 16, the action of the rotor would very quickly spoil the walls of the compressor chamber and render the whole device objectionable.

- The gist of the present invention consists in the provision of means in a sprayer unit for discharging liquid with ejector action.

The invention has been described herein more or less precisely as to details, yet it is to be understood that the invention is not to be limited thereby as changes maybe made in the arrangement and proportion of parts, and equivalents may be substituted without departing from the spirit and scope of the invention. f The invention as claimed is as follows:

1. A portable sprayer of the type adapted to beheld in a hand of an operator for use,

said sprayer including a motor casing and a compressor casing and container receiver means arranged in vertical axial alinement with the motor casing at the top; a pistol-like handle connected to the motor casing, said compressor casing having a counter bore constituting a rotor chamber, a, rotor in the chamber, said container receiver means pro.- viding means forming a closure for the rotor chamber, a container in removably secured engagement with "said "container receiver means, and conduitmeans communicatin with the interior of said container throng said container receiver means for dischar ing the contents of said container when said rotor is rotated by said motor.

2. A portable sprayer of the type adapted to be held in a hand of an operator for use and driven by an electric motor, said sprayer comprising a motor casmg and a compressor casing and a liquid container arranged in t engaged vertical axial alinement with the motor casing at the top and with the liquid container providing a supporting base at the bottom, a pistol-like handle connected to said motor casing, a rotor in said compressor casing connected-to the shaft of the motor, container receiver means connecting said compressor casing and said container, and conduit means communicating with the interior of'said container receiver means for dischar ing the contents of said container when sald rotor is rotated by the motor.

- In testimony whereof I have hereunto subscribed my name at Chicago, Cook County,

Illinois. v

' ADAM A. BREUER.