US1628823A - Self-flushing atomizing nozzle - Google Patents

Description

THOMAS CHESTER WM- MACM/CHAEL INVENTORS A TTORNE Y.

M T. CHESTER ET AL SELF FLUSHING ATOMIZING NOZZLE Filed Sept. 29, 1924 Patented May 17, 1927.

UNITED STATES PATENT THOMAS CHESTER, OF DETROIT, MIdI-IIGAN, AND WILLIAM MACMICHAEL, 0F WADS-' 1 WORTH, OHIO.

sELF-rLUsHInG A'roMiZIivG nozzLE. 1

Application filed September 29, 1924. Serial no. 7401;18.

one application of the invention is an atom izing nozzle such as may be used in air conditioning apparatus. where 1t is customary to arrange within an air chamberor.pas-' sage a large number of such nozzles threaded into and fed by risers which, in turn, are supplied from common source under pressure, with the fluid to be atomized within the chamber. A ditllculty encountered in such use is the frequent clogging of the atomizing nozzles with deposits, sediment or particles of foreign solids which in many cases are unavoidable owing to the nature of the liquids desired or necessarily used. More over it is often necessary that the process of aton'iizing be maintained as a continuous one, and interruptions required for the individual removal, hand cleaning, and replacing of a large numberof nozzles would be highly undesirable.

It is the object of the present invention to obviate these difficulties, by providing a means for multiple flushing of the nozzles, which is attained by the employment of nozzles of a self-flushing construction.

Referring now to the drawings:

Fig. l is a longitudinal section on the center line of the atomizer, showing its component parts in normal operative atomizing relation.

F 2 is a transverse section of the atomizer along line IIII of Fig. 1.

Fig. 3 is a transverse sectionof the atomizer along line IHHI of Fig. 1.

The atomizer body consists of the inlet member 1 to which is secured the outlet member 2 by threading as shown. The outlet member 2 contains a longitudinal, cylindrical bore 11, terminatingin the orifice 9 to form the nozzle 8. Extending within this orifice is a diffuser comprising the deflector head 8, adjustably positioned upon the threaded spindle or stem at, and fixedly secured thereon by the lock nut 6. The deflector head is provided with the guide vanes or fins 10, which serve to position it centrally of the bore 11. but allowing free longitudinal movement therein; and similarly the guide vanes or fins 7, integral with the deflector spindle, moving in the corresponding cylindrical bore 12, transversely position the opposite end of the spindle. The deflector head 3 which is provided'with an anticlastic surface, such as the pseudosph'eii cal surface indicated in 1, thus variably positioned within the orifice 9 restricts the effective outlet of the atomizer to an annular area of the constant outside diameter 9, but of varying inner diameter depending upon the relative longitudinal position of the deflector head with respect to the outlet member 2. l

Secnred between a shoulder in the outlet member 2, and the guide vanes 7 of the spindle 4. is a helical compression spring 5, which tends to maintain the deflector head 3 in its innermost position, that is, seated within the nozzle 8 and thus entirely closing the orifice 9. However, normally suflicient fluid pressure is maintained at the atomizer inlet to cause the deflector head 3 to slightly rise from this seat notwithstanding the resistance ofthe spring 5, and a fine spray is produced by the fluid which escapes at the outlet as it impinges upon the deflector head and is thrown off radially thereby. In order that the spring be at all times positively positioned, it is made of a diameter to closely fit within the surrounding portion of the bore which issufliciei'itly enlarged to provide a free passageway through the spring;

as indicated in the drawings an annular groove retains one end of the spring in position, the other end being positioned about shoulders cut upon the vanes.

W hen it is des red to flush the nozzle, it IS merely necessary to temporarily increase the fluid pressure at the intake of the atomizer. whereupon the increased force against the deflector head 3 overcomes the spring 5, causes the deflector head to rise from its normal atomizing position, and thus temporarily greatly increases the effective outlet area of the nozzle; which thus frees any extraneous solid matter which might have interfered with the normal functioning of the atomizer, and causes it to pass out through the orifice 9 with the flow of fluid' therethrough. When the entrance pressure is again reduced to normal the spring 5, because of the decreased counter pressure applied against the deflector head 3, causes the deflector head to resume its normal atomizing position within the nozzle, and the atomizer to again function properly.

It is obvious that any number of these atomizers supplied from a common fluid source may be thus simultaneously and almost instantaneously flushed by merely temporarily increasing the supply pressure at their common source.

lVhile we have specifically illustrated and described but one form of our invention, We do not Wish the scope of our invention to be understood as limited thereto, but rather that it embrace any and all forms of construction embodying the fundamental substance of the invention as set forth in the claims.

What we claim is:

1. In a fluid diffusing" device, an inlet member, an outlet member detachably secured to the inlet member, a dill'user coopcrating with the outlet member to regulate the fluid egress, an annular recess Within the outlet member, a guide member secured to the diffuser and co-acting with the inlet member to maintain said diffuser centrally positioned with respect to the outlet member,

and a spring between the guide member and the outletmember and seated in the recess for yieldingly maintaining the difi'user against the outlet member.

Zln a fluid ditl'using device, an inlet member, an outlet member detachably secured to the inlet member, a ditluser cooperating with the outlet member to regulate the fluid egress, an annular recess Within the outlet member, a guide member secured to the dii'l'user and co-acting with the inlet member to centrally position the diffuser with respect to said outlet member, and a' spring between the guide member and the outlet connection and seated in the recess and adjacent to and supported by the outlet connection for yieldingly maintaining the dii'luscr against the outlet member.

Signed by us this Zith day of September.

THOMAS CHESTER-i WILLIAM MAQMIGHAEL.

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