A SPA bathtub and an operating unit therefore are provided. The operating unit includes a water circulation system including a diaphragm self-priming pump, a peristaltic pump, a water circulation pipeline, and a fluid switch assembly. The diaphragm self-priming pump operates before the peristaltic pump operates normally and stops operating after the peristaltic pump operates normally. During operation of the diaphragm self-priming pump, the fluid switch assembly is in a first operation state, so that water from the interior volume portion sequentially flows through the peristaltic pump, the diaphragm self-priming pump, the fluid switch assembly, and the water circulation pipeline and finally returns to the interior volume portion. During operation of the peristaltic pump, the fluid switch assembly is in a second operation state, so that the water sequentially flows through the peristaltic pump, the fluid switch assembly, and the water circulation pipeline and finally returns to the interior volume portion.

A method and apparatus for generating a wave in a body of water may include altering a flow of water as it is urged through an inlet, contoured passage, and outlet. For example, a primary flow of water may be altered so that one or more secondary flows are created at angles to the direction of primary flow.

A method and apparatus for generating a wave in a body of water may include altering a flow of water as it is urged through an inlet, contoured passage, and outlet. For example, a primary flow of water may be altered so that one or more secondary flows are created at angles to the direction of primary flow.

An aromatic misting system for use with a bathtub comprises a reservoir having an open top end in which a removable cover structure is disposed. The cover structure has an orifice through which an aromatic mist is discharged. A liquid atomizing piezoelectric element is sealingly secured at a bottom end of the reservoir. The cover structure has a switch actuator when disposed at one position. When the cover is positioned at a second closed position, the reservoir is closed and the switch is not actuated. When there is hot water in the bathtub, the aromatic mist created in the reservoir is drawn out by the hot air generated by hot water placed in the bathtub adjacent the cover orifice, thus creating a temperature differential between the hot air and the cooler mist generated in the reservoir wherein the mist is drawn out by the temperature differential and propagates into a misty cloud over the bathtub.

Provided is a whirlpool bathtub with improved placement of a condenser of a motor in a pump used to circulate water in the whirlpool bathtub. As the whirlpool bathtub in which a pump 20 including a motor 30 and an impeller 40 is installed in an internal space 11 of a bathtub body 10, there is provided a whirlpool bathtub 1 in which a condenser 31 which is connected to the motor 30 for driving the motor 30 is installed at the outside of the bathtub body 10 rather than the internal space 11 of the bathtub body 10, and as a result, when the condenser 31 of the motor 30 is repaired, the bathtub body 10 needs not to be separated from a bathroom 2.

Provided is a whirlpool bathtub with improved placement of a condenser of a motor in a pump used to circulate water in the whirlpool bathtub. As the whirlpool bathtub in which a pump 20 including a motor 30 and an impeller 40 is installed in an internal space 11 of a bathtub body 10, there is provided a whirlpool bathtub 1 in which a condenser 31 which is connected to the motor 30 for driving the motor 30 is installed at the outside of the bathtub body 10 rather than the internal space 11 of the bathtub body 10, and as a result, when the condenser 31 of the motor 30 is repaired, the bathtub body 10 needs not to be separated from a bathroom 2.

A reconfigurable water distribution system for a walk-in tub bathing installation including two or more types of discharge ports for discharging water. The system includes a single motorized pump having an input connected to a suction port of the bathing installation, and an output port delivering pressurized water. A pipe system selectively connects the pump to the two or more types of discharge ports to selectively direct the pressurized water to the different ones of the types of discharge ports. The system selectively enables the bathing installation to perform a plurality of different functions using a single pump.

A reconfigurable water distribution system for a walk-in tub bathing installation including two or more types of discharge ports for discharging water. The system includes a single motorized pump having an input connected to a suction port of the bathing installation, and an output port delivering pressurized water. A pipe system selectively connects the pump to the two or more types of discharge ports to selectively direct the pressurized water to the different ones of the types of discharge ports. The system selectively enables the bathing installation to perform a plurality of different functions using a single pump.

A wave pool for generating surfable waves is disclosed. The wave pool includes a pool for containing water. The pool defines a channel having a first side wall, a second side wall, and a bottom with a contour that slopes upward from a deep area proximate the first side wall toward a sill defined by the second side wall. The wave pool further includes at least one foil at least partially submerged in the water near the side wall, and being adapted for movement by a moving mechanism in a direction along the side wall for generating a wave in the channel that forms a breaking wave on the sill. The wave pool further includes one or more passive flow control mechanisms to mitigate a mean flow of the water induced by the movement of the at least one foil in the direction along the side wall.

A wave pool for generating surfable waves is disclosed. The wave pool includes a pool for containing water. The pool defines a channel having a first side wall, a second side wall, and a bottom with a contour that slopes upward from a deep area proximate the first side wall toward a sill defined by the second side wall. The wave pool further includes at least one foil at least partially submerged in the water near the side wall, and being adapted for movement by a moving mechanism in a direction along the side wall for generating a wave in the channel that forms a breaking wave on the sill. The wave pool further includes one or more passive flow control mechanisms to mitigate a mean flow of the water induced by the movement of the at least one foil in the direction along the side wall.