Fluid sprinkling – spraying – and diffusing – Combining of separately supplied fluids – Liquid flow induces atmospheric air
Patent
1998-04-15
2000-02-22
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Combining of separately supplied fluids
Liquid flow induces atmospheric air
239381, 239457, 239530, 239562, 239570, 137888, 137895, E03C 108
Patent
active
060270446
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to improvements in a constant flowrate water saving valve used by being attached to the outlet of a channel including a flow rate adjusting cock, such as a tap, and to a shower head having said constant flowrate water saving valve housed therein. Particularly, it relates to a constant flowrate water saving valve and to a shower head having the constant flowrate water saving valve housed therein, wherein the flow rate of fluid to be discharged is pre-adjusted to a particular value in the engineering design stage to make it possible to save water according to the surroundings in which it is used, and wherein air is sucked and mixed in the fluid during the discharge of the latter, the mixed fluid being discharged through the shower while retaining the momentum of its flow.
BACKGROUND ART
As is known in the art, the city water system comprises water taps attached to individual terminal channels to allow a controlled amount of water to be discharged through the spout by turning on said tap. Users of such city water system often tend to turn on taps to a large extent to discharge a large wasteful amount of water even when they actually use a small amount of water. With the object of preventing wasteful discharge in connection with the utilization of such city water system, there have heretofore been developed water saving valves intended to limit the amount of discharge water by utilizing the fluid pressure as the flow rate increases due to the increasing degree of the opening of the tap.
As an example of conventional water saving valve, there is known a water saving valve for use in flow rate adjusting cocks developed by the same applicant and disclosed in Japanese Laid-Open Utility Model Publication No. 41,283 of 1991. This water saving valve for use in flow rate adjusting cocks disclosed in Japanese Laid-open Utility Model Publication No. 41,283 of 1991 is designed such that when the tap has been closed, the spherical valve body is abutting against a stop member under the action of the valve body urging means to shut the fluid channel, and when the tap is gradually turned on until the flow rate on the inlet side is W.sub.1, the spherical valve body is axially moved against the urging force of valve body urging means until it reaches an intermediate position which lies away from the stop member and which maintains a channel between the stop member and a conical shaped valve seat surface, allowing the fluid to be discharged at the flow rate w.sub.1 from a fluid outlet opening through the channel between the stop member and the conical-shaped valve seat surface, and on the other hand when the flow rate on the inlet side increases to W.sub.2, the resulting fluid pressure forces said spherical valve body to abut against the conical-shaped valve seat surface against the urging force of the valve body urging means and thereby close the fluid outlet opening, thus shutting off the discharge of the fluid. That is, according to the one disclosed in Japanese Laid-Open Utility Model Publication No. 41,283 of 1991, it is arranged that the outflow of the fluid is shut off at the stage when the flow rate on the inlet side reaches W.sub.2 ; in this point the arrangement has an inconvenient side to it.
As for another example of a conventional water saving valve, there is known a flow rate adjusting water saving valve developed by the same applicant and disclosed in Japanese Laid-Open utility Model Publication No. 19,743 of 1993. This flow rate adjusting water saving valve disclosed in Japanese Laid-Open Utility Model Publication No. 19,743 of 1993 is designed such that when the tap has been closed, the spherical valve body is abutting against a stop member under the action of the urging means to shut, the fluid channel, and when the tap is gradually turned on until the flow rate on the inlet side is W.sub.1, the spherical valve body is axially moved against the urging force of valve body urging means until it reaches an intermediate position which lies away from the stop member and wh
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European Search Report in Application EP 97-93-3886, corresponding to U.S. application Ser. No. 09/051,617.
Ganey Steven J.
Kashnikow Andres
LandOfFree
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