Valve assemblies principally for in-floor swimming pool cleaning systems
Detailed are valve assemblies principally for use as part of in-floor cleaning systems for swimming pools. The assemblies may use mechanisms for converting continuous rotation into discontinuous rotation, changing the timing of water distribution to different outlet of the assemblies. One such mechanism includes both an impeller, whose blades are rotated continuously by impingement of pressurized water, and a Geneva drive, whose driven wheel is rotated discontinuously by one or more associated drive wheels.
1. An in-floor pool cleaning system including a valve assembly comprising:
a. an impeller; and
b. a Geneva drive comprising:
i. a driven wheel comprising a plurality of slots; and
ii. a plurality of rotatable drive wheels, each of the plurality of rotatable drive wheels including a pin configured at times to engage a slot of the plurality of slots as the plurality of rotatable drive wheels rotate.
2. An in-floor pool cleaning system according to claim 1 further comprising a housing (i) containing the impeller and the Geneva drive and (ii) defining a fluid inlet.
3. An in-floor pool cleaning system according to claim 2 in which the housing further defines a plurality of fluid outlets.
4. An in-floor pool cleaning system according to claim 1 in which, when a drive wheel of the plurality of drive wheels rotates in a first direction and the pin of the drive wheel engages a slot of the plurality of slots, the driven wheel rotates in a second direction opposite the first direction.
5. An in-floor pool cleaning system according to claim 4 further comprising a valve plate (i) connected to the Geneva drive and (ii) defining an aperture.
6. An in-floor pool cleaning system according to claim 5 further comprising a housing (i) containing the impeller and the Geneva drive and (ii) defining a fluid inlet and a plurality of fluid outlets and in which the aperture is configured to align with at least one of the plurality of fluid outlets at times in use.
7. An in-floor pool cleaning system according to claim 6 in which (i) the plurality of fluid outlets comprises at least a first fluid outlet and a second fluid outlet adjacent to the first fluid outlet but spaced therefrom and (ii) the aperture spans the space between the adjacent first and second fluid outlets.
8. An in-floor pool cleaning system according to claim 7 in which the impeller comprises a plurality of blades impinged upon by pressurized water entering the housing through the fluid inlet.
9. An in-floor pool cleaning system according to claim 1 in which the impeller includes a gear, further comprising:
a. a housing (i) containing the impeller and the Geneva drive, (ii) defining a fluid inlet, and (iii) defining a plurality of fluid outlets;
b. a valve plate (i) connected to the Geneva drive and (ii) defining an aperture configured at times in use to align with at least one of the plurality of fluid outlets;
c. a shaft connected to the gear of the impeller;
d. a synchronizer gear connected to the shaft; and
e. a gear assembly connected to the shaft.
10. An in-floor cleaning system according to claim 9 in which the at least one of the plurality of fluid outlets is circular, the aperture is elongated, and an area of the aperture is larger than an area of the at least one of the plurality of fluid outlets.
11. A valve assembly comprising (a) a Geneva drive having (i) a driven wheel and (ii) a plurality of rotatable drive wheels, each of the plurality of rotatable drive wheels including a pin configured at times to engage a slot of the plurality of slots as the plurality of rotatable drive wheels rotate; and (b) an impeller (i) having blades and (ii) connected directly or indirectly to the Geneva drive; and in which pressurized liquid impinges on the blades of the impeller, with continuous rotation of the impeller producing discontinuous rotation of the driven wheel of the Geneva drive.