Swim spa with plenum arrangement at head end
A swimming pool with a circulating water flow includes a plurality of side walls adjacent a swimming compartment, one of the side walls including an outlet, at least one inlet positioned at each lateral side of the outlet, and a plenum arrangement on a side of the one wall opposite the swimming compartment. The plenum arrangement is in communication with each inlet and the outlet. A water propulsion device is positioned within the plenum arrangement and effects a pair of circuitous water flow paths within the swimming compartment.
1. A swimming pool with a circulating water flow, comprising a plurality of side walls adjacent a swimming compartment, one of said side walls including an outlet, at least one inlet positioned at each lateral side of said outlet, and a plenum arrangement on a side of said one wall opposite said swimming compartment, said plenum arrangement in communication with each said inlet and said outlet, and a water propulsion device positioned within said plenum arrangement and effecting a pair of circuitous water flow paths within said swimming compartment, the swimming pool having an absence of a separate return flow plenum arrangement extending along the length of the swimming compartment, placement of said inlets on each lateral side of said outlet are configured to displace return flow paths of the water in said circuitous water flow paths laterally from a primary flow of the water in said circuitous water flow paths that issues from said outlet.
2. The swimming pool of claim 1 , wherein said pair of circuitous water flow paths include a common primary flow path from said outlet, said return flow paths being divided return flow paths that flow to a respective said at least one inlet in a direction opposite to said primary flow path.
3. The swimming pool of claim 2 , wherein each said circuitous water flow path flows through a corresponding said at least one inlet at a lateral side of said outlet, then laterally inward toward said outlet, and then merges with the other said circuitous water flow path prior to exiting said outlet.
4. The swimming pool of claim 3 , wherein each said circuitous water flow path is positioned entirely within said swimming compartment and said plenum.
5. The swimming pool of claim 2 , wherein said water propulsion device comprises a propeller.
6. The swimming pool of claim 5 , wherein said plenum arrangement includes a rear wall, and including an electric motor positioned outside said plenum and a drive shaft coupled with said motor, said drive shaft extending through said rear wall of said plenum in line with said outlet, said propeller mounted to an end of said drive shaft opposite said motor.
7. The swimming pool of claim 1 , wherein said plenum arrangement includes a pair of flow diverting walls, each said flow diverting wall positioned between said outlet and a corresponding said at least one inlet.
8. A method of operating a swimming pool with a circulating water flow, comprising the steps of:
discharging a jet of water from an outlet at a head end of the swimming pool into a swimming compartment, whereby the jet of water flows in a primary flow path toward a swimmer within the swimming compartment; and
splitting the flow of water past the swimmer to define two circuitous flow paths, each said flow path having a return flow path flowing within said swimming compartment in a direction opposite to said primary flow path back toward said head end, the swimming pool having an absence of a separate return flow plenum arrangement extending along the length of the swimming compartment.