COMBINED-PURPOSE PRESSURE BOOSTER PUMP

This disclosure relates fluid moving devices such as pumps and associated components such as to pump casings, pump casing assemblies, and pumps, systems and methods of manufacture and use. In particular, this disclosure relates to combined-purpose devices, such as pump casings and pumps, that can operate as standard centrifugal pumps, booster pumps, and hybrid pumps. The combined-purpose device devices can produce different pressure and flow characteristics that are desirable in, for example, bathing environments.

FIELD

This disclosure relates to fluid moving devices such as pumps and associated components such as pump casings, pump casing assemblies, and systems and methods of manufacture and use. In particular, this disclosure relates to single combined-purpose devices, such as pump casings, pumps, and pumping systems that can operate as standard centrifugal pumps, booster pumps, and hybrid pumps. The devices and systems can produce different pressure and flow characteristics in a fluid.

BACKGROUND

Various pump devices and systems are known for controlling the characteristics of fluid flow and pressure for use in a variety of applications, including bathing.

Standard centrifugal pumps are often used for supplying fluids at a relatively high flow rate and low pressure in a variety of applications. For example, standard centrifugal pumps can be used to operate what is commonly referred to as whirlpool jets in bathing systems. In a bathing system, a standard centrifugal pump can supply fluid that exits an enclosed chamber or pipe at a rapid flow rate and low pressure.

Booster pumps can be used to supply a fluid at a relatively low flow rate and high pressure in a variety of applications. For example, booster pumps can be used to produce pressures and flow rates that are desirable and/or necessary for producing microbubbles with additional auxiliary equipment. Additional auxiliary equipment (such as a pressure tank, liquid thin film [LTF], nozzle, and/or other similar devices) may be positioned upstream or downstream from a booster pump to produce microbubbles by entraining dissolved air into the pressurized water prior to exiting an enclosed chamber. Microbubbles are becoming popular in bathing, and consequently, booster pumps are being included in bathing systems.

SUMMARY

It is desirable for fluid moving systems to have the capability to produce pressures and flow rates typical of standard centrifugal pumps and booster pumps. Currently, the fluid moving systems require the installation of both a standard centrifugal pump and booster pump to have dual capability, resulting in significant cost and complexity.

In a bathing system, some users desire that a bathing environment have the capability to produce both whirlpool jets and microbubbles. Whirlpool jets typically require low pressure and high flow, whereas microbubble production typically requires high pressure and low flow. These two distinct pressure and flow characteristics require two separate pumping systems to achieve the desired characteristics—one with a centrifugal pump and one with a booster pump. This can also result in significant cost and complexity.

This disclosure provides pump casings, pump casing assemblies, pumping systems, and pumps that combine standard centrifugal pumps and booster pumps into a single combined-purpose pump casing, pump casing assembly, pumping system, and/or pump. Different types of pumps can be used in place of or with a centrifugal pump (e.g., positive displacement pump) without departing from the scope of this disclosure. The disclosure provides combined-purpose devices and systems that can function as a standard centrifugal pump, booster pump, and/or hybrid pump. One of ordinary skill in the art will appreciate that the pump casings, pump casing assemblies, pumping systems, and pumps disclosed herein can be employed in a variety of fields. For example, they can be employed in bathing systems, fluid pumping systems, water pumping systems, waste fluid pumping systems, irrigation systems, chemical plants, fire safety systems, fluid systems used for drilling, and/or any other fluid systems, devices, and/or assemblies that can benefit from having a single combined-purpose device and/or system.

The systems, methods, apparatuses, and devices of this disclosure can include a centrifugal pump for directing fluid that can have a casing that directs fluid through the casing. The centrifugal pump can have an inlet opening to direct fluid into the casing and an outlet opening to direct fluid out of the casing. The centrifugal pump can have an impeller positioned in the casing. The impeller can direct fluid from the inlet opening to the outlet opening by directing fluid from the center of the impeller to the periphery of the impeller. The centrifugal pump can have a motor configured to rotate the impeller to direct fluid from the inlet opening to the outlet opening. The centrifugal pump can have a venturi device that has a venturi inlet and a venturi outlet. The venturing device can recirculate at least a portion of fluid in the casing from the periphery of the impeller via the venturi inlet back toward the center of the impeller via the venturi outlet. The venturi outlet can be in fluid communication with the inlet opening. The venturi device can increase fluid flow rate from the venturi inlet directed to the venturi outlet to decrease pressure of the at least a portion of the fluid directed to the venturi outlet to draw fluid through the inlet opening. The centrifugal pump can have a plug that can selectively move from an open position to a closed position. In the open position, the at least a portion of fluid can be recirculated in the casing through the venturi device. In the closed position, the plug can inhibit recirculation flow through the venturi device to inhibit recirculation of the at least a portion of the fluid in the casing. When the plug is in the open position, the centrifugal pump can provide a lower fluid flow rate at a higher fluid pressure relative to when the plug is in the closed position. In the closed position, the centrifugal pump can provide a higher fluid flow rate at a lower fluid pressure relative to with the plug in the open position.

In some embodiments, the plug can be selectively moved to one or more positions between the open position and the closed position to vary fluid flow rate through the venturi device. This can provide a range of fluid flow rates and fluid pressures, ranging from the lower fluid flow rate and the higher fluid pressure in the open position to the higher fluid flow rate and the lower fluid pressure in the closed position.

In some embodiments, when the plug is in the open position, the centrifugal pump can provide a fluid flow rate of about 3 GPM at a fluid pressure of about 35 to 50 PSI, including about 35 to 45 PSI. When the plug is in the closed position, the centrifugal pump can provide a fluid flow rate of about 40 GPM at a fluid pressure of about 10 PSI.

In some embodiments, the plug has an actuator that can move the plug from the open position to the closed position.

In some embodiments, the actuator is connected to the casing.

In some embodiments, the centrifugal pump can have a cover connected to the casing. The cover can have the inlet opening and the actuator can be connected to the cover.

In some embodiments, the actuator can be moved automatically via a solenoid.

In some embodiments, the plug can be moved manually or automatically.

In some embodiments, the plug has a silicone stopper that can at least partially conform to the venturi inlet to block the venturi inlet.

The systems, methods, apparatuses, and devices of this disclosure can include a pump casing assembly configured to direct fluid. The pump casing assembly can have an inlet opening that directs a fluid through the pump casing assembly, an outlet opening that directs fluid out of the pump casing assembly, and an impeller positioned in the pump casing assembly. The impeller can direct the fluid from the inlet opening to the outlet opening. The pump casing assembly can have an ejector assembly. The ejector assembly can have a tube inlet and a tube outlet. An intermediary inner diameter of the ejector assembly, disposed between the tube inlet and tube outlet, can be smaller than an inner diameter of the tube inlet and tube outlet. The ejector assembly can recirculate at least a portion of the fluid in the pump casing assembly. The tube outlet can be in fluid communication with the tube inlet. The ejector assembly can be configured to increase fluid flow rate from the tube inlet directed to the tube outlet to decrease pressure of the at least a portion of the fluid directed to the tube outlet. This can draw fluid into the inlet opening. The pump casing assembly can have a stopper that can selectively move from an open position to a closed position. The open position can allow fluid to be recirculated in the pump casing assembly through the ejector assembly. The closed position can inhibit recirculation flow through the ejector assembly to inhibit recirculation of the at least a portion of the fluid in the pump casing assembly. When the stopper is in the open position, the pump casing assembly can provide a lower fluid flow rate at a higher fluid pressure relative to the stopper in the closed position. In the closed position, the pump casing assembly can provide a higher fluid flow rate at a lower fluid pressure.

In some embodiments, the impeller is configured to direct the fluid from the inlet opening to the outlet opening by generally directing fluid from a center of the impeller to a periphery of the impeller.

In some embodiments, the pump casing assembly has a motor that can rotate the impeller to direct the fluid from the inlet opening to the outlet opening.

In some embodiments, a centrifugal pump can include the pump casing assembly.

In some embodiments, the ejector assembly can be a uniform structure.

In some embodiments, the ejector assembly can have several components.

In some embodiments, the ejector assembly can include an elongate tube.

In some embodiments, the ejector assembly can be a venturi.

In some embodiments, the passage of fluid through the ejector assembly can have a venturi effect.

In some embodiments, an inner diameter of the ejector assembly gradually decreases in size from the inner diameter of the tube inlet to the intermediary inner diameter. The inner diameter of the ejector assembly can also gradually increase in size from the intermediary inner diameter to the inner diameter of the tube outlet.

In some embodiments, the ejector assembly can recirculate at least a portion of the fluid in the pump casing assembly from a periphery of the impeller via the tube inlet back toward a center of the impeller via the tube outlet.

In some embodiments, the stopper is within the pump casing assembly.

In some embodiments, the stopper can be partially disposed within the pump casing assembly.

In some embodiments, the stopper is coupled to the ejector assembly.

In some embodiments, the stopper can be selectively moved to one or more positions between the open position and the closed position to vary fluid flow rate through the ejector assembly and provide a range of fluid flow rates and fluid pressures. The ranges can vary from the lower fluid flow rate and the higher fluid pressure in the open position to the higher fluid flow rate and the lower fluid pressure in the closed position.

In some embodiments, with the stopper in the open position, the pump casing assembly can provide a fluid flow rate of about 3 GPM at a fluid pressure of about 35 to 45 PSI.

In some embodiments, with the stopper in the closed position, the pump casing assembly can provide a fluid flow rate of about 40 GPM at a fluid pressure of about 10 PSI.

In some embodiments, the stopper can have an actuator configured to move the stopper between the open position, closed position, and intermediary positions.

In some embodiments, the actuator can allow a user to move the plug manually.

In some embodiments, the actuator can move the plug automatically.

In some embodiments, the actuator includes a solenoid.

In some embodiments, the pump casing assembly has a cover connected to the pump casing assembly. The cover can include the inlet opening. The actuator can be connected to the cover.

In some embodiments, the stopper can have a silicone stopper that at least partially conforms to the tube inlet to block the tube inlet.

A method of making a centrifugal pump for directing fluid can include providing a casing that can direct a fluid through the casing, providing an inlet opening that can direct fluid into the casing, and providing an outlet opening that can direct fluid out of the casing. The method can include positioning an impeller in the casing. The impeller can direct the fluid from the inlet opening to the outlet opening by generally directing fluid from a center of the impeller to a periphery of the impeller. The method can include providing a motor that can rotate the impeller to cause the impeller to direct the fluid from the inlet opening to the outlet opening. The method can include providing a venturi device that can have a venturi inlet and a venturi outlet. The venturi device can recirculate at least a portion of the fluid in the casing from the periphery of the impeller via the venturi inlet back toward the center of the impeller via the venturi outlet. The venturi outlet can be in fluid communication with the inlet opening. The venturi device can increase fluid flow rate from the venturi inlet directed to the venturi outlet to decrease pressure of the at least a portion of the fluid directed to the venturi outlet to draw fluid into the inlet opening. The method can include providing a plug that can be selectively moved from an open position to a closed position. In the open position, the fluid can be recirculated in the casing through the venturi device. In the closed position, the plug can inhibit recirculation flow through the venturi device to inhibit recirculation of the at least a portion of the fluid in the casing. In the open position, the centrifugal pump can provide a lower fluid flow rate at a higher fluid pressure relative to with the plug in the closed position. In the closed position, the centrifugal pump can provide a higher fluid flow rate at a lower fluid pressure.

The systems, methods, apparatuses, and devices of this disclosure can include a pump casing assembly that can direct fluid. The pump casing assembly can have an inlet opening that can direct a fluid into the pump casing assembly and an outlet opening that can direct fluid out of the pump casing assembly. The pump casing assembly can have an ejector assembly. The ejector assembly can have an ejector inlet and an ejector outlet. The ejector assembly can have an intermediary inner diameter, disposed between the ejector inlet and ejector outlet, that is smaller than an inner diameter of the ejector inlet and outlet. The ejector assembly can recirculate at least a portion of the fluid in the pump casing assembly. The ejector outlet can be in fluid communication with the ejector inlet. The ejector assembly can increase fluid flow rate from the ejector inlet to the ejector outlet to decrease pressure of the at least a portion of the fluid at the ejector outlet to draw fluid into the inlet opening. The pump casing assembly can have a stopper that can selectively move from an open position to a closed position. In the open position, fluid can be recirculated in the pump casing assembly through the ejector assembly. In the closed position, fluid can be inhibited from recirculating through the ejector assembly to inhibit recirculation of the at least a portion of fluid in the pump casing assembly. When the stopper is in the open position, the pump casing assembly can provide a lower fluid flow rate at a higher fluid pressure relative to the plug in the closed position. In the closed position, the pump casing assembly can provide a higher fluid flow rate at a lower fluid pressure.

The systems, methods, apparatuses, and devices of this disclosure can include a pump casing assembly that can direct fluid. The pump casing assembly can include an inlet opening that can direct a fluid through the pump casing assembly. The pump casing assembly can include an outlet opening that can direct the fluid out of the pump casing assembly. The pump casing assembly can include a tube that has a tube inlet and a tube outlet. An inner diameter of the tube can be smaller than an inner diameter of the tube inlet. The tube can recirculate at least a portion of the fluid in the pump casing assembly. The tube outlet can be in fluid communication with the tube inlet. The tube can increase fluid flow rate from the tube inlet directed to the tube outlet to decrease pressure of the at least a portion of the fluid directed to the tube outlet to draw fluid into the inlet opening. The pump casing assembly can include a stopper that can selectively move from an open position, allowing fluid to be recirculated in the pump casing assembly through the tube, and a closed position, inhibiting recirculation flow through the tube to inhibit recirculation of the at least portion of the fluid in the pump casing assembly. With the stopper in the open position, the pump casing assembly can provide a lower fluid flow rate at a higher fluid pressure relative to the stopper in the closed position. The pump casing assembly can provide a higher fluid flow rate at a lower fluid pressure with the stopper in the closed position.

In some embodiments, a smallest inner diameter of the tube is proximate the tube outlet or a smallest inner diameter of the tube is at the tube inlet.

In some embodiments, the pump casing assembly forms the tube within the pump casing assembly.

In some embodiments, the pump casing assembly has an impeller positioned in the pump casing assembly that can direct the fluid from the inlet opening to the outlet opening. In some embodiments, the impeller can direct the fluid from the inlet opening to the outlet opening by directing fluid from a center of the impeller to a periphery of the impeller.

In some embodiments, the pump casing assembly has a motor that can rotate the impeller to direct the fluid from the inlet opening to the outlet opening.

In some embodiments, the tube can recirculate the at least portion of the fluid in the pump casing assembly from a periphery of the impeller via the tube inlet back toward a center of the impeller via the tube outlet.

In some embodiments, the centrifugal pump includes the pump casing assembly.

In some embodiments, the tube is a uniform structure.

In some embodiments, the tube includes several components.

In some embodiments, the tube is an ejector assembly.

In some embodiments, the tube includes a venturi.

In some embodiments, the passage of fluid through the tube has a venturi effect.

In some embodiments, the inner diameter of the tube gradually decreases in size from the inlet toward the opening.

In some embodiments, an inner diameter of the pump casing assembly increases in size from the tube outlet into the pump casing assembly.

In some embodiments, the stopper is within the pump casing assembly.

In some embodiments, the stopper is partially disposed within the pump casing assembly.

In some embodiments, the stopper is coupled to the tube.

In some embodiments, the stopper is can be selectively moved to one or more positions between the open position and the closed position to vary fluid flow rate through the tube and provide a range of fluid flow rates and fluid pressures for fluid exiting the outlet opening, ranging from the lower fluid flow rate and the higher fluid pressure in the open position to the higher fluid flow rate and the lower fluid pressure in the closed position.

In some embodiments, with the stopper in the open position, the pump casing assembly can provide a fluid flow rate of about 3 GPM at a fluid pressure of about 35 to 45 PSI.

In some embodiments, with the stopper in the closed position, the pump casing assembly can provide a fluid flow rate of about 40 GPM at a fluid pressure of about 10 PSI.

In some embodiments, the stopper includes an actuator that can move the stopper between the open, closed, and intermediary positions.

In some embodiments, the actuator can allow a user to move the plug manually.

In some embodiments, the actuator can move the plug automatically.

In some embodiments, the actuator can include a solenoid.

In some embodiments, the pump casing assembly has a cover connected to the pump casing assembly that includes the inlet opening. In some embodiments, the actuator is connected to the cover.

In some embodiments, the stopper includes a silicone stopper that can at least partially conform to the tube inlet to block the tube inlet.

The systems, methods, apparatuses, and devices of this disclosure can include a pump casing assembly that can direct fluid. The pump casing assembly can include an inlet opening that can direct a fluid into the pump casing assembly. The pump casing assembly can include an outlet opening that can direct the fluid out of the pump casing assembly. The pump casing assembly can include an ejector assembly. The ejector assembly can include an ejector inlet and an ejector outlet. An inner diameter of the ejector assembly can be smaller than an inner diameter of the ejector inlet. The ejector assembly can recirculate at least a portion of the fluid in the pump casing assembly. The ejector outlet can be in fluid communication with the ejector inlet. The ejector assembly can increase fluid flow rate from the ejector inlet directed to the ejector outlet to decrease pressure of the at least a portion of the fluid directed to the ejector outlet to draw fluid into the inlet opening. The pump casing assembly can include a stopper that can selectively move from an open position, allowing the at least portion of fluid to be recirculated in the pump casing assembly through the ejector assembly, and a closed position, inhibiting recirculation flow through the ejector assembly to inhibit recirculation of the at least portion of the fluid in the pump casing assembly. With the stopper in the open position, the pump casing assembly can provide a lower fluid flow rate at a higher fluid pressure relative to the stopper in the closed position. With the stopper in the closed position, the pump casing assembly can provide a higher fluid flow rate at a lower fluid pressure.

The systems, methods, apparatuses, and devices of this disclosure can include an ejector assembly that can direct fluid. The ejector assembly can include a tube or first pipe including a tube inlet and a tube outlet. The ejector assembly can include a fluid passageway or second pipe fluidly connecting the tube outlet to the tube inlet to recirculate fluid. The inner diameter of the tube can be smaller than an inner diameter of the fluid passageway. The ejector assembly can include a flow controller that can selectively move from an open position, allowing fluid flow into the tube inlet to recirculate through the ejector assembly, and a closed position, inhibiting recirculation fluid flow in the tube inlet and through the tube to inhibit recirculation of the fluid. The tube can increase fluid flow rate from the tube inlet to the tube outlet to decrease pressure of the fluid directed through the tube.

In some embodiments, a smallest inner diameter of the ejector assembly is at the tube outlet.

In some embodiments, the ejector assembly includes a venturi.

In some embodiments, passage of fluid through the ejector assembly has a venturi effect.

In some embodiments, the flow controller can be selectively moved to one or more positions between the open position and the closed position to vary fluid flow rate through the ejector assembly and provide a range of fluid flow rates and fluid pressures for fluid exiting the tube outlet, ranging from the lower fluid flow rate and the higher fluid pressure in the open position to the higher fluid flow rate and the lower fluid pressure in the closed position.

In some embodiments, the ejector assembly includes an actuator that can move the flow controller between the open, closed, and intermediary positions.

In some embodiments, the flow controller can allow a user to move the flow controller manually.

In some embodiments, the flow controller can be moved automatically.

In some embodiments, the flow controller includes a solenoid.

In some embodiments, the flow controller includes a valve.

In some embodiments, the flow controller includes a silicone stopper that can at least partially conform to the tube inlet to block the tube inlet.

In some embodiments, the tube and the fluid passageway are positioned outside a pump casing.

DETAILED DESCRIPTION

Although certain embodiments and examples are described below, this disclosure extends beyond the specifically disclosed embodiments and/or uses and obvious modifications and equivalents thereof. Thus, it is intended that the scope of this disclosure should not be limited by any particular embodiments described below. Furthermore, this disclosure describes many embodiments in reference to bathing environments but any embodiment and modifications or equivalents thereof should not be limited to bathing environments.

Example Combined-Purpose Device

FIG. 1schematically illustrates an example of a combined-purpose device100, including for example, a pump for pressurizing and directing fluid such as liquid, including water. The combined-purpose device100should not be limited to what is described herein. Combined-purpose device100can have fewer or more components than those described herein. Components of combined-purpose device100can have characteristic and/or configuration variations of similar components of combined-purpose devices and/or systems described herein.

The combined-purpose device100can include a pump casing136. The pump casing136can have an inlet102through which a fluid can enter the internal cavity of pump casing136. The pump casing136can have an outlet104through which a fluid can exit the internal cavity of pump casing136. The inlet102can be fluidically coupled or connected to an ejector primary opening132of an ejector assembly112. Ejector assembly and ejector are frequently referred to throughout the entirety of this disclosure. Ejector assembly and ejector can be similar or equivalent to venturi, venturi device/assembly, eductor, eductor device/assembly, aspirator, aspirator device/assembly, injector, and/or injector device/assembly. In some embodiments, the terms can be used interchangeably to refer to substantially the same or similar component(s) achieving substantially the same or similar function. All can function using principles of a venturi.

An O-ring110can be disposed between the inlet102and ejector primary opening132, also referred to as a suction chamber opening and/or suction chamber. The ejector primary opening132can be fluidically connected to an inner tube of ejector assembly112. The ejector assembly112can have an ejector inlet134, also referred to as an actuating nozzle, and ejector outlet148, also referred to as diffuser, which are fluidically connected by the inner tube of ejector assembly112. Various names can be used to reference the ports, openings, inlets, and/or outlets of the ejector assembly112and/or their functions without departing from the scope of this disclosure. The ejector assembly112can cause a high flow pressure drop when fluid passes through the ejector inlet134, inner tube of ejector assembly112, and ejector outlet148.

The ejector outlet148can be coupled to an aperture142of impeller cover plate114. The impeller cover plate114can enclose or partially enclose impeller116. The rotation of impeller116can direct fluid toward the impeller center144of impeller116and then toward the periphery146of impeller116. Impeller116can be coupled to the shaft140of motor128such that the motor128can rotate the shaft140, causing the rotation of impeller116. A seal spring120can be disposed between motor128and impeller116along the same axis of shaft140. A rear pump casing122can be disposed between motor128and impeller116along the same axis of shaft140. The motor128can have a fan cover130. The motor128can have a terminal box126that contains electrical components.

Rear pump casing122can be coupled or connected to the coupling portion138of pump casing136. An O-ring118can be disposed between the rear pump casing122and the coupling portion138of pump casing136. The coupling portion138of pump casing136can be coupled to volute cover124of motor128. In some embodiments, the coupling of the rear pump casing122to the coupling portion138of pump casing136creates a fluidically enclosed chamber that only, or primarily, allows fluid to enter through inlet102and exit through outlet104.

The pump casing136can include an ejector access port106. A plug108, also referred to as a stopper or obstruction mechanism, can be coupled, inserted within, and/or connected to ejector access port106. In some embodiments, a valve or other flow controller can replace or work with the plug108. In some embodiments, the plug108, and the other plugs referenced herein, can be a throttling device, valve, flow restrictor, diverter, and/or other mechanisms of controlling, limiting, and/or changing the flow of fluid. The ejector access port106can be configured to prevent fluid from exiting ejector access port106with a sealing component. The plug108can prevent fluid from exiting ejector access port106. The plug108can have a length that extends from ejector access port106to ejector inlet134(e.g., recirculation inlet). The plug108can be manipulated such that a portion of plug108obstructs the ejector inlet134such that fluid cannot enter ejector inlet134(e.g., prevents recirculation of fluid therethrough). This can be referred to as a closed position. The plug108can be manipulated such that a portion of plug108does not obstruct the ejector inlet134such that fluid can enter ejector inlet134. This can be referred to as an open position. The plug108can be manipulated such that a portion of plug108partially obstructs the ejector inlet134such that fluid can enter ejector inlet134but at a rate between the open and closed positions. This can be referred to as an intermediary position. In some embodiments, modulation between a continuum of intermediary positions can allow a pump to operate on an expanded continuum of a pressure/flow curve. This can allow adaptation of a pump to different pressure and flow requirements of a plumbing and/or piping system. For example, with the plug108relatively closer to the closed position, the flow rate of recirculated fluid through the ejector assembly112can be reduced. Conversely, with the plug108relatively closer to the open position, the recirculation flow rate through the ejector assembly112can be increased.

In operation, the motor128can rotate shaft140, causing the impeller116to rotate. The rotation of impeller116can pull fluid through inlet102. The fluid can flow through the inlet102to the ejector primary opening132, through an inner tube of the ejector assembly112, and out the ejector outlet148. The fluid can continue through the aperture142of cover plate114and toward the impeller116. The rotating impeller116can pull fluid toward the impeller center144and then direct the fluid toward a periphery146of impeller116.

When the plug108is in the open position, not obstructing the ejector inlet134, the fluid can flow in at least two directions from the periphery146of impeller116. A portion of fluid can exit outlet104, which may be connected to a bathing environment or piping that leads to a bathing environment. A portion of fluid can be recirculated within the pumping casing136to flow into ejector inlet134, through the inner tube of ejector assembly112, and out the ejector outlet148, causing a high flow pressure drop. Due to this high flow pressure drop, fluid can be drawn in from inlet102. This can contribute to a significant pressure boost. In some embodiments, the pressure boost can be in the range of raising pressure to 45-50 PSI. In some embodiments, the pressure boost can be in the range of about 3-100 PSI, including about 5-60 PSI. Given the significant pressure boost and reduced flow from the recirculated fluid, the portion of fluid exiting outlet104can exit at a high pressure and low flow rate. In some embodiments, the fluid exiting outlet104can exit at 45-50 PSI and approximately 3 GPM or less. In some embodiments, the fluid exiting outlet104can exit at 35-45 PSI. In some embodiments, the fluid exiting outlet104can exit at about 3-100 PSI, including about 5-60 PSI and about 1-150 GPM, including about 3-100 GPM. This can produce pressure and flow rates desirable and/or necessary for producing microbubbles, with additional auxiliary equipment, that can be fed into a bathing or other environment.

When the plug108is in the closed position, obstructing the ejector inlet134, the fluid may not be recirculated through the inner tube of ejector assembly112. The fluid flows from the periphery146of impeller116to exit outlet104. Given that the fluid is not recirculated through the ejector assembly112, there is no significant pressure boost or lost flow. Instead, plug108in the closed position can result in fluid exiting outlet104at a relatively low pressure and high flow rate. In some embodiments, this can include fluid exiting outlet104at 10 PSI and 40 GPM or more. In some embodiments, the fluid exiting outlet104can exit at 35-45 PSI. In some embodiments, the fluid exiting outlet104can exit at about 3-100 PSI, including about 5-60 PSI, and at about 1-150 GPM, including about 3-100 GPM. This can include standard pressure and flow rates that are used for whirl pool jets in bathing environments. In some embodiments, auxiliary equipment, such as a venturi jet, can be used to draw air into the fluid, causing the fluid to have bubbles. These bubbles do not constitute “microbubbles.”

When the plug108is in an intermediary position, partially obstructing the ejector inlet134, the fluid can recirculate through the inner tube of ejector assembly112but at reduced levels compared to the open position because less fluid can pass through the ejector assembly112. This can result in a reduced pressure boost and flow loss. Consequently, the fluid exiting outlet104can have pressure and flow rates between what can occur when the plug108is in the open or closed positions. In some embodiments, the fluid exiting outlet104can exit at 10-45 PSI and 3-40 GPM. In some embodiments, the fluid exiting outlet104can exit at about 3-100 PSI, including about 5-60 PSI, and at about 1-150 GPM, including about 3-100 GPM.

The features described in reference toFIG. 1can be altered to include equivalents and obvious modifications. For example, the components of the combined-purpose device100can be made of any material suitable for containing and/or interacting with fluid and that can withstand the pressures and flow rates described herein. In some embodiments, the components of the combined-purpose device100can be made of metals, metal alloys, polymers (including rubbers, silicone, etc.), ceramics, and/or other suitable materials.

In some embodiments, the pump casing136can be one unitary structure. In some embodiments, the pump casing136can comprise multiple components that couple together to provide an enclosure capable of containing fluid.

In some embodiments, the inlet102can be located anywhere on the pump casing136or located on another component that is coupled to the pump casing136. The inlet102can be any shape that includes a cavity through which fluid can flow. This can include tubes with outer or inner perimeters that are circular, square, polygonal, etc. The inlet102can be varying sizes. The varying sizes and shapes of inlet102can alter the pressure and flow rate of fluid, including when fluid ultimately exits outlet104. The inlet102can have internal and/or external threads for coupling inlet102to piping and/or another member. The inlet102can have a shape and size configured to be press-fit to piping and/or another member. The same characteristics for inlet102, as outlined above, can be altered for outlet104.

In some embodiments, the ejector assembly112is one unitary structure. In some embodiments, the ejector assembly112comprises multiple components that are coupled together. In some embodiments, the ejector assembly112includes an elongate tube. In some embodiments, the ejector assembly112includes a venturi device. This can include using the venturi effect to some degree to alter the pressure and flow rate of fluid as fluid passes through ejector assembly112. In some embodiments, the ejector assembly112can be located in varying positions within the pump casing136. In some embodiments, the ejector assembly112can be oriented vertically, horizontally, or in other configurations. In some embodiments, the ejector assembly112can be located external to the pump casing136. Stated differently, a centrifugal pump or positive displacement pump can perform as a booster pump with the addition of an external ejector assembly112(e.g., venturi). For example, a water well pump can be converted from a shallow well to deep well function by including an ejector, which can include having an ejector by a foot valve in a deep well application. In some embodiments, only a single ejector assembly112is employed. In some embodiments, more than one ejector assemblies112are employed. In some embodiments, one or more ejector assemblies112are employed in parallel. In some embodiments, one or more ejector assemblies112are employed in a staged configuration. In some embodiments, one or more ejector assemblies are employed in series.

In some embodiments, the ejector primary opening132, ejector inlet134, ejector outlet148, and inner tube of the ejector assembly112can be varying shapes and sizes. The varying shapes and sizes can alter the pressure and flow rate of the fluid, which can include when fluid ultimately exits outlet104. In some embodiments, the ejector inlet134and the ejector outlet148have the same inner diameter or size. In some embodiments, the ejector inlet134has an inner diameter or size that is smaller than the inner diameter or size of ejector outlet148. In some embodiments, an intermediary diameter or size of the inner tube of ejector assembly112, disposed between ejector inlet134and ejector outlet148, can be smaller than the inner diameter or size of both ejector inlet134and ejector outlet148. In some embodiments, the intermediary diameter or size of the inner tube of ejector assembly112can have the same inner diameter or size as ejector inlet134but a smaller inner diameter or size than ejector outlet148. In some embodiments, the intermediary diameter or size of the inner tube of ejector assembly112can have the same inner diameter or size ejector outlet148. In some embodiments, the ejector assembly112causes a high flow pressure drop when fluid passes through it, which draws fluid in inlet102and through ejector primary opening132. This can result in a pressure boost. In some embodiments, the pressure boost is 45-50 PSI but the components and features of combined-purpose device100, including ejector assembly112, can be altered to produce different pressure boosts, including pressure boosts above 50 PSI or 5-60 PSI. In some embodiments, the fluid exiting outlet104can exit at 35-45 PSI.

In some embodiments, the ejector outlet148can be coupled to an aperture142of impeller cover plate114. In some embodiments, the impeller cover plate114includes apertures around the periphery146of impeller116such that fluid can be directed in certain directions, which can include toward outlet104and/or to be recirculated through ejector inlet134. The number of apertures around the periphery of impeller116can vary. In some embodiments, the entire periphery146of impeller116is not covered by impeller cover plate114. In some embodiments, the combined-purpose device100does not include an impeller cover plate114.

In some embodiments, the impeller116, when in operation, directs fluid toward a center144of impeller116. The impeller116, when in operation, can direct fluid from impeller center144toward a periphery146of impeller116. Impeller116can have any number of vanes. In some embodiments, impeller116is a closed impeller, meaning that vanes are disposed between two plates. This can be preferred when interacting with a fluid that is substantially free of particles. A closed impeller can direct a fluid to travel the channels between the vanes and inner plate surfaces. In some embodiments, impeller116is a semi-open impeller, meaning that any vanes are disposed on a single plate. A semi-open impeller can direct fluid, less efficiently than a closed impeller, but can operate with more viscous fluids and/or fluids with particles. In some embodiments, impeller116is an open impeller, meaning that any vanes are not supported by plates. An open impeller can direct fluid, less efficiently than a closed or semi-open impeller, but can operate with high viscosities and/or concentrations of particles.

In some embodiments, motor128rotates shaft140causing the rotation of impeller116which pulls liquid through inlet102and toward impeller116. The motor128can be a dc motor, ac motor, motor that relies on combustion, or any other motor that can rotate the shaft140to cause the rotation of impeller116. In some embodiments, the motor128can rotate the shaft140at different speeds to cause the fluid to have different flow rates and pressures.

In some embodiments, the pump casing136or another component coupled to the pump casing136can include an ejector access port106. In some embodiments, the ejector access port106can allow access to the ejector inlet134without allowing a significant amount of fluid to escape through the ejector access port106. In some embodiments, the ejector access port106will prevent a significant amount of fluid from escaping through the ejector access port106when plug108is coupled and/or inserted in the ejector access port106. In some embodiments, ejector access port106is configured to allow at least a portion of plug108to be inserted through it such that at least a portion of plug108can obstruct the ejector inlet134. In some embodiments, ejector access port106comprises a hole that pierces pump casing136or another component coupled to the pump casing136. The ejector access port106can be any shape that includes a cavity through which plug108, a portion of plug108, and/or other components of plug108, which can include components that facilitate actuation of plug108, may be inserted. In some embodiments, the ejector access port106comprises a hole with threads that can mate with other threaded components, such as plug108or a portion of plug108. In some embodiments, the ejector access port106is positioned along the same axis as the axis of the inner tube of ejector assembly112, ejector inlet132, and/or ejector assembly112. In some embodiments, the ejector access port106can be located anywhere on pump casing136or a component coupled to pump casing136.

In some embodiments, a plug108, also referred to as a stopper or obstruction mechanism, can be inserted in, coupled to, and/or otherwise interface with the ejector access port106. In some embodiments, the plug108can be manually actuated between the closed position, open position, and any intermediary position through the ejector access port106. In some embodiments, the plug108has a length that, when in the closed position, extends from outside the pump casing136or a component coupled to the pump casing136to the ejector inlet134or a position past the ejector inlet134but within the inner tube of ejector assembly112. In some embodiments, a user can push or pull on a portion of plug108that is exposed outside the pump casing136. A user can push on the exposed portion of plug108to put plug108in a closed position, such that the opposing portion of plug108, sometimes referred to as a blocking portion, obstructs the ejector inlet134.

In some embodiments, the blocking portion of plug108comprises a flat surface that can cover the entirety of the ejector inlet134. In some embodiments, the blocking portion of plug108comprises a shape such that the blocking portion of plug108can partially enter ejector inlet134while making contact with the inside perimeter of ejector inlet134, obstructing fluid from entering ejector inlet134. In some embodiments, the blocking portion of plug108comprises a shape such that the blocking portion of plug108enters the ejector inlet134and forms a fluid obstructing interface with a portion of the inner tube of ejector assembly112. In some embodiments, a user may pull on the exposed portion of plug108to move plug108into an open position such that the blocking portion of plug108is not obstructing fluid from entering inlet134. In some embodiments, a user may push or pull on the exposed portion of plug108to move plug108into a variety of intermediary positions such that the blocking portion of plug108is partially obstructing the ejector inlet134. In some embodiments, plug108has markings that indicate when the plug is in the closed position, open position, and/or an intermediary position. In some embodiments, the pushing and pulling described above can be performed automatically. This automatic actuation can be performed with a solenoid, pneumatic actuator, and/or other mechanisms.

In some embodiments, the plug108can be manually actuated between the different positions by rotating the exposed portion of plug108. In some embodiments, at least a portion of plug108, or a component of plug108, and the ejector access port106can be threaded such that rotation of plug108advances or retracts plug108between the different positions. In some embodiments, the rotational movement described above can be performed automatically. In some embodiments, the rotational movement described above can be performed manually.

In some embodiments, the plug108can be advanced or retracted using a configuration similar to a pinion gear and rack gear, converting rotary motion to linear motion. A side portion of plug108can have teeth that interface with a gear. The gear can be mounted on a portion of pump casing136or a component coupled to pump casing136. Rotation of the gear, while interfaced with the teeth located on a side portion of plug108, can cause plug108to be advanced or retraced between the different positions. This can be accomplished manually and/or automatically. In some embodiments, automatic actuation can be performed with a solenoid, pneumatic actuator, and/or other mechanisms.

In some embodiments, the plug108may be entirely enclosed within the pump casing136. Plug108can be actuated between the different positions with an automatic actuator disposed within the pump casing136and electrical wiring exiting the pump casing136through the ejector access port106or another port. Alternatively, plug108can be actuated between the different positions with pneumatic actuation with support tube(s) exiting the pump casing136.

In some embodiments, the plug108can comprise a valve that is positioned on, within, or in a position immediately preceding or subsequent to the ejector inlet134. In some embodiments, the valve can be a ball valve, butterfly valve, gate valve, plug valve, or any other valve that can be positioned in open, closed, and/or intermediary positions. For example, in some embodiments, the plug108comprises a knife gate valve. The knife gate valve can comprise a handle portion outside the pump casing136that can be pushed or pulled. The handle portion can be connected to an elongate member that extends through the ejector access port106, which can be positioned anywhere on the pump casing136, to move the gate between a closed position, open position, and intermediary positions. The elongate member can extend in a direction that is perpendicular to the axis of the ejector inlet134. In some embodiments, a user can grasp the handle portion and manually move the knife gate between the different positions by pushing or pulling. In some embodiments, an automatic actuator moves the knife gate between the different positions. A similar configuration could be used for other valves, including valves the are closed or opened using rotational motion. In embodiments that rely on closing and opening valves using rotational motion, a user can grasp a handle portion and rotate the handle causing the valve to rotate between positions. In some embodiments, an automatic actuator can rotate the valve between different positions.

As disclosed herein, the plug can be moved between a closed position, open position, and/or intermediary positions. In some embodiments, the open position correlates with fluid exiting outlet104at 45-50 PSI and approximately 3 GPM or less. In some embodiments, the closed position correlates with fluid exiting outlet104at 10 PSI and 40 GPM or more. In some embodiments, an intermediary position correlates with fluid exiting outlet104at 10-45 PSI and approximately 3-40 GPM. There can be any number of intermediary positions that correlate to varying pressures and flow rates. In some embodiments, there are discrete intermediary positions. In some embodiments, the fluid exiting outlet104can exit at 5-60 PSI and 3-100 GPM. In some embodiments, there is a continuum of intermediary positions. In some embodiments, the pressure and flow rate of fluid exiting outlet104, when in any of the positions, can be altered depending on the configuration (including the shape, sizing, positioning, and/or orientation) of the ejector assembly112, ejector inlet134, ejector outlet148, inner tube of the ejector assembly112, pump casing136, inlet102, outlet104, plug108, ejector primary opening132, rotational speed of the shaft140, impeller116, and/or impeller cover plate114.

Another Example Combined-Purpose Device

FIG. 2schematically illustrates an example of a combined-purpose device200. Components of combined-purpose device200can have, but are not limited to, the same characteristic and/or configuration variations of similar components of combined-purpose device100or other devices and/or systems described herein. The combined-purpose device200should not be limited to what is described herein. Combined-purpose device200can have fewer or more components than those described herein.

The combined-purpose device200can include a pump casing cover204. The pump casing cover204can have an ejector access port206. A plug208can operatively interface with the ejector access port206on pump casing cover204. The pump casing cover204can have an inlet238that can couple to inlet pipe fittings202. Inlet238can be fluidically connected to ejector primary opening244, also referred to as suction chamber opening or suction chamber, of ejector assembly212. Ejector assembly212can have an ejector inlet232, also referred to as an actuating nozzle, and ejector outlet234, also referred to as a diffuser. A inner tube of ejector assembly212can fluidically connect ejector inlet232and ejector outlet234. In some embodiments, an inner diameter of the inner tube of ejector assembly212is smaller than a diameter of ejector inlet232and ejector outlet234. In some embodiments, an inner diameter of the inner tube of ejector assembly212is smaller than a diameter of ejector inlet232at ejector outlet234. In some embodiments, the ejector assembly212can cause a high flow pressure drop when fluid passes through the ejector inlet232, inner tube of ejector assembly212, and ejector outlet234.

The ejector outlet234can be coupled to an impeller center240of impeller218. Impeller218can be coupled to the shaft222of motor224. A spring seal220can be disposed between the impeller218and the motor224. The motor224can include a cooling fan228, cooling fan cover226, and/or electrical termination box230. The motor224can have a volute cover236that couples with the pump casing214. The volute cover236, pump casing214, and pump casing cover204can be coupled together, with an O-ring210optionally disposed between the pump casing cover204and pump casing214, to provide a fluidically enclosed chamber. Fluid can primarily enter through inlet238and exit through outlet216.

In operation, the motor224rotates shaft222causing the impeller218to rotate. The rotational motion of impeller218causes fluid to be pulled through the inlet238. Fluid moves through the primary ejector opening244, inner tube of the ejector assembly212, and out the ejector outlet234. The fluid continues to the impeller218. In some embodiments, the fluid is directed toward the impeller center240and then directed toward a periphery242of impeller218. When the plug208is in the open position, the fluid is directed in at least two directions. A portion of fluid is directed toward outlet216, which may be connected to a bathing environment or piping that leads to a bathing environment. A portion of fluid is directed toward ejector inlet232to be recirculated through the ejector assembly212. The fluid moves through the ejector inlet232, inner tube of ejector assembly212, and out the ejector outlet234. This can cause a high flow pressure drop which draws fluid in from inlet238. This can result in a pressure boost. Given the pressure boost and flow lost from recirculation, the fluid exiting outlet216can be at a high pressure and low flow rate. This can produce flow rates and pressures that are desirable and/or necessary for producing microbubbles, with additional auxiliary equipment, which are fed into a bathing environment. In some embodiments, the fluid can exit outlet216at 45-50 PSI and 3 GPM or less. In some embodiments, the fluid exiting outlet216can exit at 5-60 PSI and 3-100 GPM.

In the closed position, fluid cannot enter and/or substantially enter the inlet232. The fluid can be directed primarily in one direction. The fluid is directed toward outlet216. A portion of the fluid is not recirculated through the ejector assembly212, and consequently, there is no corresponding pressure boost and flow loss. Accordingly, the fluid can exit outlet216at a low pressure and high flow rate. This configuration can be used to operate what is commonly referred to as whirlpool jets. In some embodiments, the fluid exiting outlet216can be at 10 PSI and 40 GPM or more. In some embodiments, the fluid exiting outlet216can exit at about 3 to 100 PSI, including about 5-60 PSI and about 1-150 GPM, including about 3-100 GPM.

In an intermediary position, fluid is recirculated through the ejector assembly212but at a rate between that of the closed and open position. This can result in fluid exiting outlet216at a pressure and flow rate between the pressure and flow rate of the open and closed positions. In some embodiments, the fluid can exit outlet216at approximately 10-45 PSI and 3-40 GPM. In some embodiments, the fluid exiting outlet216can exit at about 3-100 PSI, including about 5-60 PSI and about 1-150 GPM, including about 3-100 GPM.

In some embodiments, the pressure and flow rate of fluid exiting outlet216, when in any of the positions, can be altered depending on the configuration (including the shape, sizing, positioning, and/or orientation) of the ejector assembly212, elector inlet232, ejector outlet234, inner tube of the ejector assembly212, pump casing214, inlet238, outlet216, plug208, ejector primary opening244, rotational speed of the shaft222, and/or impeller218.

Example Portion of an Ejector Assembly

FIG. 3illustrates an example of a portion of an ejector assembly300. Components of ejector assembly300can have, but are not limited to, the same characteristic and/or configuration variations of similar components of combined-purpose devices and/or systems disclosed herein. The ejector assembly300should not be limited to what is described herein. Ejector assembly300can have fewer or more components and variations of those components than those described herein.

Ejector assembly300can have an ejector primary opening302. Ejector primary opening302can have an O-ring308that facilitates creating a fluidically sealed connection between another member, such as another inlet and/or piping, and ejector primary opening302. Ejector primary opening302can have an inner perimeter310that can include threads such that the ejector primary opening302can be coupled to another member by a threaded connection. In some embodiments, the outside perimeter surface of ejector primary opening302can include threads to facilitated coupling. Ejector primary opening302can include an obstructing wall314to alter the flow and pressure of fluid as the fluid enters ejector primary opening302. Ejector primary opening302can be fluidically connected to an inner tube of ejector assembly300. An ejector inlet304can be fluidically connected to the inner tube of ejector assembly300. The ejector assembly300can be coupled to an impeller306. The ejector assembly300can have support structures312disposed at various positions to assist in stabilizing the ejector assembly300. In some embodiments, support structures312can be configured to direct fluid flow toward the ejector inlet304.

In operation, the impeller306can rotate, drawing fluid in through ejector primary opening302. The fluid flow and pressure can be altered by obstructing wall314. The fluid can exit ejector assembly300in the direction of the impeller306. Impeller306can direct a portion of fluid to exit a pump casing in which the ejector assembly300is located. The impeller can direct a portion of fluid to be recirculated through the ejector assembly300. The fluid can be recirculated into the inner tube of ejector assembly300.

Fluid can enter the ejector inlet304and pass through the ejector assembly300. The passage of fluid through the ejector inlet304and inner tube of ejector assembly300can cause a high flow pressure drop. The high flow pressure drop can cause fluid to be drawn in through ejector primary opening302, resulting in a pressure boost once the fluid is directed through the impeller. The fluid can then have high pressure and low flow rate characteristics. In some embodiments, the ejector inlet304can be obstructed by a plug such that fluid cannot flow through the ejector inlet304. Consequently, the fluid does not pass through the ejector assembly300and is not subject to a pressure boost or loss of flow from fluid being recirculated. The fluid can then have low pressure and high flow rate characteristics. In some embodiments, the ejector inlet304can be partially obstructed by a plug. Fluid can be recirculated through the ejector assembly300but at a diminished rate compared to when ejector inlet304is completely unobstructed. The fluid can have varying levels of pressure and flow rate depending on the degree to which ejector inlet304is obstructed.

The ejector primary opening302can be any shape that includes a cavity through which fluid can flow. This can include tubes with outer or inner perimeters that are circular, square, polygonal, etc. The ejector primary opening302can be varying sizes. The varying sizes and shapes of ejector primary opening302can alter the pressure and flow rate of fluid. The ejector primary opening302can have internal and/or external threads for coupling to piping and/or another member. The ejector primary opening302can have a shape and size configured to be press-fit to piping and/or another member. The ejector primary opening302can be fluidically coupled to the inner tube of ejector assembly300.

The ejector inlet304can be any shape that includes a cavity through which fluid can flow. This can include tubes with outer or inner perimeters that are circular, square, polygonal, etc. The ejector inlet304can be varying sizes. The varying sizes and shapes of ejector inlet304can alter the pressure and flow rate of fluid. The outer surface of the portion of the ejector assembly300that surrounds ejector inlet304can be formed to have a gradual slope that directs recirculated fluid to enter the ejector inlet304.

A plug can be positioned to cover varying portions of ejector inlet304. In some embodiments, a plug can be partially inserted into ejector inlet304such that an outer perimeter of the plug makes contact with an inner perimeter of ejector inlet304, obstructing fluid from being recirculated through ejector inlet304. In some embodiments, a plug can make contact with the outer surface of the portion of the ejector assembly300that surrounds ejector inlet304, obstructing fluid from being recirculated through ejector inlet304. In some embodiments, a plug can be advanced and retracted between obstructing, partially obstructing, and not obstructing ejector inlet304along the same axis as ejector inlet304. In some embodiments, a plug can be advanced and retracted between obstructing, partially obstructing, and not obstructing ejector inlet304from a direction perpendicular to the axis of ejector inlet304. In some embodiments, a plug can be actuated between different positions, which can include manual actuation and automatic actuation. In some embodiments, an actuator can approach/retract from the ejector inlet304, or slide sideways over or away from ejector inlet304.

Example Manual Plug

FIG. 4illustrates an example of a combined-purpose device400. Components of combined-purpose device400can have, but are not limited to, the same characteristic and/or configuration variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device400should not be limited to what is described herein. Combined-purpose device400can have fewer or more components with other variations than those described herein.

The combined-purpose device400can include a pump casing406. The pump casing406can include an inlet402through which fluid can enter the pump casing406. The inlet402can have an inner perimeter404. In some embodiments, inner perimeter404can be threaded. The pump casing406can include an outlet408through which fluid can exit the pump casing406. The pump casing406can include an ejector access port410. A fitting (nozzle, barbed nozzle)416can be positioned within and/or on the ejector access port410. Fitting416can have a cavity through which the extension portion (shaft, rod)412of stopper418, also referred to as a plug and/or obstruction mechanism, may be inserted.

The stopper418can include a grasping portion414that a user can grasp. The grasping portion414can be connected to extension portion412that extends through the ejector access port410. The end of the extension portion412, opposite the grasping portion414, can include a blocking portion that is configured to obstruct and/or partially obstruct an ejector inlet such that recirculating fluid cannot enter an ejector assembly. In some embodiments, the grasping portion414, extension portion412, and blocking portion are one unitary body. In some embodiments, the grasping portion414, extension portion412, and blocking portion are separate components that are coupled and/or otherwise connected together.

In operation, a user can grasp the grasping portion414and push and/or pull the stopper418between closed, open, and/or intermediary positions. The extension portion412can slide in and out of the cavity of fitting416as the user pushes and pulls. The fitting416can completely or substantially prevent fluid from escaping the cavity of fitting416and/or ejector access port410, including when the extension portion412slides between different positions.

The stopper418can be placed in a closed position that blocks an ejector inlet such that fluid is not recirculated through an ejector assembly. The user can grasp and push the grasping portion414to move the plug into the closed position. The extension member412can have a length that is configured to engage the blocking portion of stopper418with the ejector inlet such that fluid cannot enter the ejector inlet. This can cause fluid to exit the outlet408at a low pressure and high flow rate. This configuration can be used to operate what is commonly referred to as whirlpool jets in a bathing environment.

The stopper418can be placed in an open position such that a blocking portion does not block an ejector inlet, allowing fluid to be recirculated through an ejector assembly. The user can grasp and pull the grasping portion414to move the plug into the open position. The passage of recirculating fluid through an ejector assembly can cause a pressure boost and loss of flow. This can cause the fluid to exit the outlet408at a high pressure and low flow rate. This configuration can produce pressures and flow rates that are desirable and/or necessary for producing microbubbles, with additional auxiliary equipment, in a bathing environment.

The stopper418can be placed in one of several intermediary positions, allowing fluid to be recirculated through the ejector assembly but to a smaller degree than the open position. The user can grasp and pull or push the grasping portion414to move the plug into an intermediary position. The passage of recirculating fluid through the ejector assembly can cause a pressure boost and loss of flow, but this can result in intermediary pressures and flow rates. This can produce pressure and flow characteristics that are between what results from the closed and open positions. This can include produce pressures and flow rates that can or cannot produce microbubbles, with additional auxiliary equipment.

In some embodiments, the extension portion412can include markings on a side or surrounding the entire perimeter that indicate when the stopper418is in the closed, open, and/or an intermediary position. In some embodiments, the markings can provide the corresponding pressure and flow rate that will result in the different positions. In some embodiments, the markings indicate “microbubble mode,” “jets mode,” “hybrid mode,” and/or other descriptors to communicate to a user the resulting fluid characteristics that will result from moving the plug to different positions.

The grasping portion414can have any shape or size that is configured to allow a user to manually actuate the stopper418. In some embodiments, the grasping portion is ergonomically designed to interact with the hand of a user. In some embodiments, the grasping portion is a cylindrical, spherical, polygonal, or another suitable shape.

The extension portion412can have varying lengths so long as the stopper418can be slid between different positions. The extension portion412can have different cross-sectional profiles. In some embodiments, the extension portion412can have a cross-sectional profile that is configured to interface with fitting416to prevent fluid from escaping fitting416.

In some embodiments, the stopper418can be moved to different positions with an automatic mechanism.

Example Blocking Portion of a Stopper

FIG. 5illustrates an example of an interior view500of combined-purpose device400described in reference toFIG. 4. Components of combined-purpose device400can have, but are not limited to, the same characteristic and/or configuration variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device400should not be limited to what is described herein. The combined-purpose device400can have fewer or more components with other variations than those described herein.

The blocking portion502can be the blocking portion described in reference toFIG. 4. The blocking portion502can be coupled to extension portion412of stopper418, on the opposing side of grasping portion414. The blocking portion502can be made from a variety of materials. In some embodiments, the blocking portion502is made from silicone. Silicone can be advantageous because the blocking portion502, when in the closed position, can deform upon interfacing with an ejector inlet. The deformation of the blocking portion502can facilitate creating contact between the blocking portion502and ejector inlet such that fluid is obstructed from entering the ejector inlet. Silicone can also be advantageous because it can be chemically inert, a desirable quality when pumping fluids used for a bathing environment. Silicone can also advantageous because, despite being able to deform (elastic), it is durable. Durability can be advantageous so that the blocking portion502does not have to be regularly replaced. The blocking portion502can be comprised of other materials such as rubbers, resins, and/or other polymers. In some embodiments, the blocking portion502can be comprised of other materials such as metals, metal alloys, and/or others.

The blocking portion502can be varying shapes and sizes. In some embodiments, the blocking portion502is a sphere, cylinder, cone, prism, polygon, or other shape. In some embodiments, the blocking portion502is a portion of a shape and/or combination of shapes.

In some embodiments, the blocking portion502has a main portion that is shaped and sized to partially or fully enter into an ejector inlet. In some embodiments, the main portion can have a cavity that allows the blocking portion502to deflect to a greater degree when interfacing with the ejector inlet. This deflection can facilitate forming contact between the blocking portion502and the ejector inlet that completely or substantially obstructs fluid from entering the ejector inlet. In some embodiments, the main body can have an annular projection that surrounds the portion of the main body closest to the extension portion412. The annular projection can have a variety of cross-sections. In some embodiments, the cross-section can be a circle, polygon, oval, or other shape. In some embodiments, the cross-section can be a portion of a shape. For example, the cross-section can be a semi-circle. In some embodiments, the annular projection can make contact with the interior perimeter of ejector inlet when stopper418is in the closed position. In some embodiments, the annular projection can make contact with the portion of the ejector assembly that surrounds the ejector inlet when stopper418is in the closed position.

In some embodiments, the blocking portion502can have a main portion that has a cone-like shape that is configured to partially or fully enter into an ejector inlet. In some embodiments, the cone-like shape can have a cavity. The cavity can allow the blocking portion502to deflect to a greater degree when interfacing with the ejector inlet. In some embodiments, the cone-like shape can have an annular projection that surrounds the base of the cone-like portion. In some embodiments, the cross-section of the annular projection is circular. In some embodiments, the cone-like shape can be inserted into the ejector inlet and the annular projection with a circular cross section can make contact with the portion of the ejector assembly that surrounds the ejector inlet when stopper418is in the closed position. This can obstruct fluid from entering an ejector inlet.

Example Solenoid Operated Plug

FIG. 6illustrates an example of a combined-purpose device600. Components of combined-purpose device600can have, but are not limited to, the same characteristic and/or configuration variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device600should not be limited to what is described herein. The combined-purpose device600can have fewer or more components with other variations than those described herein.

The combined-purpose device600can include a pump casing604. The pump casing604can include an inlet602through which fluid can enter the pump casing604. The pump casing604can include an ejector access port606. A plug, or a portion of a plug, can be positioned within the ejector access port606. In some embodiments, the plug can slide linearly between closed, open, and intermediary positions. In some embodiments, the plug can rotate between closed, open, and intermediary positions. In some embodiments, an automatic solenoid608can move a plug between different positions. The automatic solenoid608can be powered by power supply610.

In some embodiments, a user can select between the closed, open, and/or intermediary positions using a user interface. Based on the user input, a controller can command the automatic solenoid608to move to a selected position (select different modes). In some embodiments, a user can select that the automatic solenoid608keep the plug in a given position for a given period of time. Based on the user input, a controller can command the automatic solenoid608to keep the plug in a given position for a given period of time.

Example Solenoid Operated Plug

FIG. 7is illustrates an example of a combined-purpose device700. Components of combined-purpose device700can have, but are not limited to, the same characteristic and/or configurations variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device700should not be limited to what is described herein. The combined-purpose device700can have fewer or more components with other variations than those described herein.

The combined-purpose device700can include a pump casing704. The pump casing704can include an inlet702through which fluid can enter the pump casing704. The inlet702can be connected to piping710. The pump casing704can include an ejector access port706. A plug, or a portion of a plug, can be positioned within the ejector access port706. In some embodiments, the plug can slide linearly between closed, open, and intermediary positions. In some embodiments, the plug can rotate between closed, open, and intermediary positions. In some embodiments, a solenoid708can move the plug between different positions.

Example Cross-Section View of Combined-Purpose Device with Plug in Open Position

FIG. 8illustrates an example of a cross-section view of a combined-purpose device800with the plug822(e.g., stopper) in an open position. Components of combined-purpose device800can have, but are not limited to, the same characteristic and/or configuration variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device800should not be limited to what is described herein. The combined-purpose device800can have fewer or more components with other variations than those described herein.

The combined-purpose device800can include a pump casing824. The pump casing824can include an inlet802through which fluid can enter the pump casing824. The pump casing824can include an inlet802through which fluid can enter the internal cavity of pump casing824. The inlet802can be fluidically coupled or connected to an ejector primary opening826of an ejector assembly806. The ejector primary opening826can be fluidically connected to an inner tube811of an ejector assembly806. The ejector assembly806can have an ejector inlet808and ejector outlet810which are fluidically connected by the tube or inner tube811of ejector assembly806. The ejector assembly806can cause a high flow pressure drop when fluid passes through the ejector inlet808, inner tube811of ejector assembly806, and ejector outlet810.

The inner tube811can have a tube inlet813and a tube outlet815. The inner diameter of the tube inlet813can be larger than the inner diameter of the tube outlet815or the inner diameter proximate the tube outlet815. The fluid at a relatively high pressure can be directed from the impeller toward the tube inlet813by the pump casing. The fluid passes through tube inlet813toward the tube outlet815and increases in velocity while dropping in the pressure. The tube outlet815is in fluid communication with the ejector primary opening826to drawn fluid into the ejector primary opening826.

The tube outlet815can be in fluid communication with, direct fluid into, and/or open up into a fluid passageway817of the ejector assembly806. The fluid passageway817can direct the fluid toward the impeller812. In some embodiment, the fluid passageway817can be considered the elongate tube as discussed herein. In some embodiments, any portion or all of the fluid passageway817and any portion or all of the inner tube811can be considered the elongate tube as discussed herein. In some embodiments, a portion or all of the tube outlet815can be connected to the fluid passageway817. The venturi effect can be considered to be created by the inner tube811with or without the fluid passageway817. The inner tube811with or without the fluid passageway817can be considered a venturi device having an inlet and an outlet as discussed herein. Accordingly, the venturi inlet can be the ejector inlet808and/or the tube inlet813. The venturi outlet can be the ejector outlet810or the tube outlet815.

The ejector outlet810can be positioned in close proximity to impeller812, such that fluid exiting ejector outlet810can be directed toward impeller center814. Impeller812can be coupled to motor820such that the motor820can rotate a shaft, causing the rotation of impeller812. The rotation of impeller812can direct fluid toward the impeller center814of impeller812and then toward the periphery of impeller812. Fluid can be directed from the periphery of impeller812to area816and/or the area818, which can be areas of one internal chamber defined by the pump casing824or separate areas partitioned by walls of the pump casing824. The entire inside of the pump casing824, including areas816and818, can be at the same pressure or, in some embodiments, different pressures. The entire inside of the pump casing824, including areas816,818and the outlet804, can be at the same pressure or, in some embodiments, different pressures.

The pump casing824can include an ejector access port828. A plug822, also referred to as a stopper or obstruction mechanism, can be coupled, inserted within, and/or connected to ejector access port828. The plug822can have a length that is configured to extend from ejector access port828to ejector inlet808and/or tube inlet813. The plug822can be actuated between different positions, which can include an open position, closed position, and/or intermediary positions. In the closed position, the plug822is actuated to obstruct ejector inlet808and/or tube inlet813such that fluid cannot flow from area816into the ejector assembly806. In the open position, as is depicted inFIG. 8, the plug822is actuated to not obstruct ejector inlet808and/or tube inlet813such that fluid can flow from the area816, and/or other areas, and into the ejector assembly806via the ejector inlet808and/or tube inlet813. In an intermediary position, the plug822is actuated to partially obstruct ejector inlet808such that fluid can flow from area816and into the ejector assembly806but at a lower flow rate compared to the open position. The plug822can be actuated manually and/or automatically between different positions. In some embodiments, plug822is actuated automatically with a solenoid.

In operation, the motor820can rotate a shaft, causing the impeller812to rotate. The rotation of impeller812can pull fluid through inlet802. In some embodiment, the fluid pulled in through inlet802is low pressure fluid. The fluid can flow through the inlet802to the ejector primary opening826, through the fluid passageway817of the ejector assembly806, and out the ejector outlet810. The rotating impeller812can pull fluid toward the impeller center814and then direct the fluid toward a periphery of impeller812.

As depicted inFIG. 8, when the plug822is in the open position and not obstructing the ejector inlet808, the fluid can flow in at least two directions from the periphery of impeller812. A portion of fluid can be directed toward area818and exit pump casing824through outlet804, which may be connected to a bathing environment or piping that leads to a bathing environment. A portion of fluid can be directed toward area816and be recirculated by flowing into ejector inlet808(tube inlet813of tube811), accelerated through the tube outlet815(causing a pressure drop and entrainment of fluid into the inlet802of the pump casing824), through the fluid passageway817, or the inner tube of ejector assembly806, and out the ejector outlet810, causing a high flow pressure drop.

In some embodiments, fluid passing through the fluid passageway817, or the inner tube of the ejector assembly806, is at a medium pressure. The fluid at the inlet802can be considered relatively low pressure. The fluid at the impeller periphery can be considered relatively high pressure. Due to this high flow pressure drop, fluid can be drawn in from inlet802. This can contribute to a significant pressure boost. In some embodiments, the pressure boost can be in the range of raising pressure to 45-50 PSI. In some embodiments, the fluid exiting outlet804can exit at 35-45 PSI. In some embodiments, the fluid exiting outlet804can exit at 5-60 PSI and 3-100 GPM. Given the significant pressure boost and reduced flow from the recirculated fluid, the portion of fluid entering the area818can be high pressure and can exit outlet804at a high pressure and low flow rate. In some embodiments, the fluid exiting outlet804can exit at 45-50 PSI and approximately 3 GPM or less. This can produce flow rates and pressures that are desirable and/or necessary for producing microbubbles, with additional auxiliary equipment, that are fed into a bathing environment. In some embodiments, recirculated fluid that is directed from the impeller center814and then to the periphery of impeller812can enter area816at a high pressure. In some embodiments, the recirculated fluid can enter ejector inlet808at a high pressure. In some embodiments, this can include the pressure range of 45-50 PSI.

Example Cross-Section View of Combined-Purpose Device with Plug in Closed Position

FIG. 9illustrates an example of a cross-section view of combined-purpose device800with the plug822(e.g., stopper) in a closed position. Components of combined-purpose device800can have, but are not limited to, the same characteristic and/or configuration variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device800should not be limited to what is described herein. The combined-purpose device800can have fewer or more components with other variations than those described herein.

In operation, the motor820can rotate a shaft, causing the impeller812to rotate. The rotation of impeller812can pull fluid through inlet802. In some embodiment, the fluid pulled in through inlet802is low pressure fluid. The fluid can flow through the inlet802to the ejector primary opening826, through the passageway817, or inner tube of the ejector assembly806, and out the ejector outlet810. The rotating impeller812can pull fluid toward the impeller center814and then direct the fluid toward a periphery of impeller812.

As depicted inFIG. 9, when the plug822is in the closed position and obstructing the ejector inlet808, fluid cannot flow through ejector inlet808and/or tube inlet813and through ejector assembly806. The fluid can flow in at least at least two directions from the periphery of impeller812. A portion of fluid can be directed toward area818and exit pump casing824through outlet804, which can be connected to a bathing environment or piping that leads to a bathing environment. A portion of fluid can be directed toward area816, but fluid will not be recirculated through the tube811, fluid passageway817, and/or the inner tube of ejector assembly806because plug822is obstructing fluid from entering ejector inlet808and/or tube inlet813. Consequently, there is no associated pressure boost from recirculated fluid passing through ejector assembly806. In some embodiments, the rotation of impeller812can change the pressure and flow rate of fluid. In some embodiments, the fluid leaving the periphery of impeller812, to either area818or area816, can be at a medium pressure. The fluid drawn through inlet802and through fluid passageway817, or inner tube of the ejector assembly806, and into the impeller can be considered low pressure. In some embodiments, the fluid leaving the periphery of impeller812to the area816, area818, and/or outlet804can be at a lower pressure and higher flow rate relative to when plug822is in the open position. In some embodiments, the fluid leaving the periphery of the impeller812to the area816, area818, and/or outlet804can be at a medium pressure and higher flow rate relate to when the plug822is in the open positon. In some embodiments, this can include fluid exiting outlet804at 10 PSI and 40 GPM or more. This can include standard pressure and flow rates that are used for whirl pool jets in bathing environments. In some embodiments, the fluid exiting outlet216can exit at 5-60 PSI and 3-100 GPM.

When the plug822is in an intermediary position, partially obstructing the ejector inlet808, the fluid can recirculate through the ejector inlet808and/or tube inlet813of the ejector assembly806but at reduced levels compared to the open position because less fluid can pass through the ejector assembly806. This can result in a reduced pressure boost and flow loss. Consequently, the fluid exiting outlet804can have pressure and flow rates between what can occur when the plug822is in the open or closed positions. In some embodiments, the fluid exiting outlet804can exit at 10-45 PSI and 3-40 GPM when plug822is in an intermediary position. In some embodiments, the fluid exiting outlet216can exit at 5-60 PSI and 3-100 GPM.

Example Cross-Section View of a Portion of a Combined Purpose Device

FIG. 10illustrates an example of a cross-section view of a portion of a combined-purpose device1000. Components of combined-purpose device1000can have, but are not limited to, the same characteristic and/or configuration variations of similar components of other combined-purpose devices and/or systems described herein. The combined-purpose device1000should not be limited to what is described herein. The combined-purpose device1000can have fewer or more components with other variations than those described herein.

Combined-purpose device1000can have an inlet1002, which can be fluidically coupled to an intake pipe and/or vessel. Inlet1002can be fluidically coupled to a diffuser opening1004. The diffuser opening1004can be fluidically coupled to a suction chamber1006. Suction chamber1006can be fluidically coupled to an ejector1008. The suction chamber1006can be fluidically coupled to the ejector1008such that fluid passing through the suction camber1006will not pass through an actuating nozzle1010of ejector1008.

Ejector1008can have an actuating nozzle1010, which can be disposed on one end of the ejector1008. Actuating nozzle1010can be fluidically coupled to an inner tube1012of ejector1008. Inner tube1012of ejector1008can be fluidically coupled to a diffuser1014, which can be disposed on an end of the ejector1008that is opposite the actuating nozzle1010. In some embodiments, actuating nozzle1010can be fluidically coupled to diffuser1014. In some embodiments, the components of ejector1008are positioned in a piping system such that they are not directly coupled to each other.

The combined-purpose device1000can function as the other combined-purpose devices disclosed herein, including having a plug, or other obstruction mechanism, that can be positioned in an open, closed, and intermediary position to obstruct fluid from recirculating through the actuating nozzle1010. Combined-purpose device1000can operate to alter the pressure and flow of fluid flowing through the combined-purpose system1100as described herein.

Example of a Combined-Purpose System

FIG. 11illustrates an example of a combined-purpose system1100. Components of combined-purpose system1100can have, but are not limited to, the same characteristic variations of similar components of other combined-purpose devices and systems described herein. The combined-purpose system1100should not be limited to what is described herein. The combined-purpose system1100can have fewer or more components with other variations than those described herein.

Combined-purpose system1100can have a pump1102. Pump1102can have an impeller1104. Pump1102can be configured to rotate impeller1102such that fluid is pulled from intake pipe1106. Intake pipe (tube, first pipe)1106can have an intake opening (inlet, tube inlet)1110that is fluidically coupled to a venturi1108that is disposed within piping. The intake opening1110can be positioned such that fluid passing through the intake opening1110will not pass through an actuating nozzle1116of the venturi1108. The venturi1108can have a diffuser1112. The diffuser1112can be fluidically coupled to a chamber1105that houses the impeller1104. The diffuser1112can be fluidically coupled to piping or suction piping1115that is fluidically coupled to the chamber1105that houses the impeller1104.

Outlet piping (outlet, tube outlet)1120can be fluidically connected to the chamber1105that houses the impeller1104. Recirculation piping (fluid passageway, second pipe)1114can be fluidically connected to the chamber1105that houses the impeller1104. Recirculation piping1114can be fluidically coupled to the actuating nozzle1116of the venturing1118, such that fluid entering the recirculation piping1114will pass through the venturi1108and back to the chamber1105that houses the impeller1102. An obstruction mechanism (flow controller)1118can be disposed on and/or within the recirculation piping1114. The obstruction mechanism1118can be a valve, plug, stopper, and or other obstruction device. The obstruction mechanism1118can obstruct fluid from flowing through the recirculation piping1114. The obstruction mechanism1118can be actuated between a closed, open, and intermediate positions, as disclosed herein to provide a variable flow rate, including no flow rate, through recirculation piping1114.

Combined-purpose system1100can operate as the combined-purpose devices and systems disclosed herein to alter the pressure and flow of fluid flowing through the combined-purpose system1100and connected piping. In some embodiments, the intake opening1110can be considered the inlet802. In some embodiments, the diffuser1112, recirculation piping1114, and/or actuating nozzle1116, can be considered the tube811. In some embodiments, the diffuser1112and/or suction pipe1115can be considered the fluid passageway817. In some embodiments, the intake opening1110, the diffuser1112, recirculation piping1114, actuating nozzle1116, and/or suction pipe1115can be considered an ejector assembly. In some embodiments, the obstruction mechanism1118can be considered the plug822.

In some embodiments, the combined-purpose system1100can include multiple venturis1108. In some embodiments, multiple venturis1108can be staged. In some embodiments, multiple venturis1108can be positioned in series. In some embodiments, multiple venturis1108can be positioned in parallel. In some embodiments, multiple venturis1108can share an actuating nozzle1116. In some embodiments, multiple venturis1108can each have an actuating nozzle1116but all, or some, share a diffuser1112