Baths – closets – sinks – and spittoons – Tubs – Combined with diverse means
Patent
1990-06-13
1992-09-01
Recla, Henry J.
Baths, closets, sinks, and spittoons
Tubs
Combined with diverse means
2394255, A61H 3302
Patent
active
051427141
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a nozzle for introducing a mixture of water and air into a tub. The nozzle has an antechamber which may be coupled to an intake conduit for one medium, preferably the water, and which may be attached to the wall of the tub. A spherical nozzle body is pivotally held in the antechamber and is provided with a bore. The bore communicates with the antechamber and, from the exterior of the tub, an orifice of an intake conduit for the other medium, preferably the air, projects into the bore. Nozzles of this construction are known in principle.
However, nozzles of the above type have the drawback that, although the direction of the jet is adjustable, the mixing ratio between water and air can be regulated only by changing the rate of the intake air. While in expensive whirlpools the water throughput can be varied by regulating the pumping power, this cannot be accomplished, primarily for cost reasons, in simpler constructions so that the user is practically dependent on the water throughput predetermined by the pumping power and the nozzle dimensions. Another drawback of the known nozzle construction is that, when installed into the wall of the tub, the antechamber does not completely empty when the tub is emptied so that the danger of contamination of the remaining water exists.
SUMMARY OF THE INVENTION
It is the object of the invention to provide an improved nozzle of the above-outlined type which is more economical to make, which is simpler to install and service and which is capable of regulating the water throughput.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the nozzle assembly for discharging a mixture of first and second fluids includes a housing having inlets for introducing the first and second fluids into the housing; and a sleeve disposed in and affixed to the housing and receiving the second fluid from one of the inlets. There is further provided a holding ring disposed in the housing and surrounding the sleeve. The holding ring may be displaced relative to the sleeve in a direction parallel to the sleeve length. A nozzle body is situated in the housing and has a spherical member surrounding the sleeve and a nozzle outlet member. The nozzle body has a sealing face situated inside the spherical member and cooperating with a spherical sealing face of the sleeve for determining therewith a variable annular gap constituting a flow passage area for the first fluid. The nozzle body is held captive in the holding ring and may pivot therein. The nozzle body and the holding ring move substantially as a unit upon longitudinal displacement of the holding ring. The size of the variable annular gap depends from the longitudinal position of the holding ring. The holding ring has a limit position in which the gap is reduced to zero by a sealing contact between the spherical sealing face of the sleeve and the sealing face of the nozzle body. In the limit position the center of the spherical member and the center of the spherical sealing face of the sleeve coincide.
The advantage of the arrangement according to the invention is that the nozzle can be inserted as a complete component from the interior of the tub through a corresponding bore, with the edge projecting over the opening edge in the tub lying in sealing contact against the interior of the tub so that it can be reliably sealed. If a leak should later develop, it is easily possible, even in an enclosed tub which is no longer accessible from the side, to produce the appropriate seal. Another advantage of the construction according to the invention is that axial displacement of the nozzle body relative to the orifice of the air intake conduit enables the free passage cross section for the one medium, preferably for the water, to be varied independently of the pumping power. Thus it is not only possible to regulate the supply of air, which is generally drawn in only on the basis of the Venturi effect through the orifice of the intake
REFERENCES:
patent: 3471091 (1969-10-01), Baker
patent: 4261347 (1981-04-01), Spencer, III et al.
patent: 4262371 (1981-04-01), Berry et al.
patent: 4408721 (1983-10-01), Cohen et al.
patent: 4671463 (1987-06-01), Moreland et al.
patent: 4731887 (1988-03-01), Henkin et al.
patent: 4742965 (1988-05-01), Messinger et al.
patent: 4800046 (1989-01-01), Malek et al.
Fetsuga Robert M.
Hoesch Metall & Kunststoffwerk GmbH & Co.
Recla Henry J.
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