WATER SPRAYER
A water spray gun includes a body providing a flow path, a head configured to rotate relative to the body, and a chemical container coupled to body. The head includes a plurality of nozzles that may be rotated into and out of the flow path. At least one of the plurality of nozzles includes a group of small orifices. The chemical container is configured to provide chemicals to the flow path.
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This is a continuation-in-part of U.S. application Ser. No. 12/411,139, filed Mar. 25, 2009, which is incorporated herein by reference in its entirety.
BACKGROUNDThe present invention relates generally to the field of garden hose spray systems. More specifically, the invention relates to a system including a pump and control mechanism for boosting the flow rate, pressure, momentum, and/or exit velocity of a water flow (or water stream) through the system.
Household garden hoses may be used for a wide variety of tasks around a home. However, at pressures supplied by household plumbing systems, the pressure of outgoing streams may be fairly low, for example approximately 0.4 megapascals (MPa), or approximately 60 pounds per square inch (psi). To compensate, household garden hoses may be fitted with a wide variety of fittings and/or nozzles to increase the water pressure in the system and provide a stream of water with an increased exit velocity. However to increase the outgoing velocity of the water stream, such nozzles may greatly reduce the outgoing flow rate, which is the product of average velocity and flow cross-section—for example from approximately 315 to 630 cubic centimeters per second (cm3/s), or approximately 5 to 10 gallons per minute (gpm), down to less than 190 cm3/s (3 gpm).
Devices other than garden hose boosting pumps, such as powered pressure washers for example, are known to be used to clean dirt, paint, or mold from pavement, brick face, cement, or other surfaces. To achieve such results, these devices may generally provide an energized water stream but with a greatly increased pressure (e.g., approximately 9.6 MPa (1400 psi)) and a greatly reduced flow rate (e.g., approximately 80 to 90 cm3/s (1.3-1.4 gpm)). Heavy duty pressure washers may provide streams with even higher pressures (e.g., 20 to 35 MPa (3000-5000 psi)) and possibly greater flow rates (e.g., approximately 225 cm3/s (3.5 gpm)). The high pressure streams of heavy duty pressure washers may facilitate more demanding tasks, such as resurfacing or cutting of materials, which may require extremely powerful flows.
SUMMARYOne embodiment of the invention relates to a garden hose spray system including a pump for boosting a water flow through the system, a garden hose connector coupled to the pump, and a controller. The controller is in communication with the pump, such that the controller engages the pump when the water flow exceeds a predetermined, non-zero threshold flow rate. The garden hose spray system further includes a variable outlet operable at a first flow setting for a flow rate greater than the threshold and a second flow setting for a non-zero flow rate less than the threshold.
Another embodiment of the invention relates to a garden hose assist system including a water pump having a motor, an inlet, and an outlet. A garden hose connector is coupled to the pump. The hose assist system also has a flow sensor coupled to the pump, and the sensor has a status that is based upon measuring water flowing through the system relative to a non-zero, flow rate threshold. Also, the hose assist system includes a control circuit that engages the pump in response to the status of the flow sensor.
Still another embodiment relates to a booster system for use with a garden hose. The booster system includes a water pump having a motor. The pump is designed to produce a maximum water pressure of less than 1000 psi. A garden hose connector is coupled to the pump. The booster system also includes a switch for engaging and disengaging the pump. A hose storage structure for holding a garden hose close to the pump is also included in the system.
Yet another embodiment relates to a garden hose storage and booster system. The booster system includes a water pump and a garden hose connector coupled to the pump. A switch is included for engaging and disengaging the pump. A hose storage structure for holding a garden hose close to the pump is also included in the system. Additionally, a storage housing substantially encloses the pump and the hose storage structure.
Another embodiment relates to a garden hose booster control system. The system includes a water pump with a motor, a radio frequency receiver, and a switch for engaging and disengaging the motor. The system also includes a variable outlet having a first flow rate setting, a second flow rate setting, a radio frequency transmitter. The transmitter is designed to transmit a radio frequency signal to the receiver to indicate which setting the variable outlet is using. Additionally, the system includes a controller designed to adjust the switch based upon the signal.
Another embodiment relates to a water spray gun, which includes a body providing a flow path, a head configured to rotate relative to the body, and a chemical container coupled to body. The head includes a plurality of nozzles that may be rotated into and out of the flow path. At least one of the plurality of nozzles includes a group of small orifices. The chemical container is configured to provide chemicals to the flow path.
Another embodiment relates to a control system for a water pump assembly that uses water to communicate control signals to the pump. The control system includes a water pump having an inlet and an outlet, a spray gun configured to receive water from the outlet of the water pump via a hose connected to the outlet, and a sensor. The spray gun includes a body providing a flow path through the water spray gun and a head configured to rotate relative to the body. The head includes a plurality of nozzles that may be rotated into and out of the flow path of the spray gun, where the plurality of nozzles includes a larger opening and a smaller opening. The larger opening allows a greater flow rate through the spray gun than the smaller opening. The sensor is configured to provide a signal to control the water pump based upon a characteristic of the water flow that corresponds to whether the larger or smaller opening of the spray gun is being used.
Alternative exemplary embodiments relate to other features and combinations of features as may be generally recited in the claims.
The disclosure will become more fully understood from the following detailed description, taken in conjunction with the accompanying figures, wherein like reference numerals refer to like elements, in which:
Before turning to the figures, which illustrate the exemplary embodiments in detail, it should be understood that the present application is not limited to the details or methodology set forth in the description or illustrated in the figures. It should also be understood that the terminology is for the purpose of description only and should not be regarded as limiting.
Garden hoses and sprayers can be used for a broad range of applications, including for example cleaning cars, watering plants, washing home windows and siding, rinsing out a warehouse floor or garage, and the like. However, garden hoses alone may produce water streams that are too weak to wash off certain materials, such as tree sap or bird residue. As such, booster systems for garden hoses may be very useful. The added boost may produce water streams powerful enough to handle everyday household cleaning tasks that are outside of the capabilities of garden hoses alone.
Referring to
Referring now to
In some embodiments, the motor 232 is a alternating current electric motor, and the motor 232 is compatible with a standard household electrical system (e.g., 120-volt motor). An electrical plug and cord may couple the motor to a current source. In other embodiments the motor 232 is powered by a direct current electric motor and battery. In still other embodiments the motor 232 is a combustion engine.
Certain embodiments of the present invention relate to a booster for a garden hose as opposed to a “true” pressure washer. Conversely, it should be noted that some “pressure washers,” especially the heavy duty pressure washers, can damage objects that are hit directly by a correspondingly high-powered water stream or by an object propelled by the high-powered stream. However, some embodiments of this invention provide a mechanism for energizing a water stream from a household water system with an increased flow rate and/or pressure that is suitable to everyday-type cleaning applications. For example, in certain scenarios, such as for cleaning operations (e.g., removing stuck-on plant debris from a vehicle; dried-on bird waste from a window; or spider webs from an eve of a high roof line, out of reach of a garden hose having unboosted pressure and flow) a user may desire an increased flow rate and/or pressure beyond the capabilities of a garden hose and faucet without a booster pump, but not with the reduced flow rate and much higher pressures of “true” pressure washers. Thus, according to some exemplary embodiments, pumps associated with the presently claimed invention have a maximum pressure capacity (e.g., maximum settings) of less than approximately 7 MPa (1000 psi), preferably less than approximately 4 MPa (600 psi), and even more preferably less than approximately 1.5 MPa (200 psi). For example, in a preferred embodiment the maximum pressure capacity (e.g., maximum setting) is less than approximately 400 kilopascals (kPa) (60 psi); and in another preferred embodiment it is less than approximately 550 kPa (80 psi). Also, certain exemplary embodiment systems have a water flow rate capacity (e.g., maximum setting) of at least approximately 250 cm3/s (4 gpm), preferably at least approximately 325 cm3/s (5 gpm), and even more preferably at least approximately 350 cm3/s (5.5 gpm). For example, in a preferred embodiment the water flow rate capacity (e.g., maximum setting) is approximately 375 cm3/s (6 gpm). In some embodiments, activating the pump increases the water flow rate by a magnitude approximately greater than 1.25 but less than five, preferably by a magnitude approximately greater than 1.5 but less than three, such as approximately two.
While the pump 230 is a centrifugal-type pump, other embodiments utilize other styles of pumps, including reciprocating pumps and/or positive displacement pumps. For example, at least one embodiment includes a pump that uses a piston-style positive displacement pump. Centrifugal pumps may be preferred over piston-style pumps because no bypass may be needed with the former for a water flow to continue to flow when power is not provided to the pump. It should be noted that in some exemplary embodiments the pump is an electric pump having a ground fault protection, such as a circuit breaker, fuse, and the like. The ground fault protection may help to protect a user from accidental electric shock. Additionally, the ground fault protection may help to protect the pump system from short-circuiting, overloading, and the like, which may be damaging to the system.
Still referring to
While the sensor 222 is shown as part of a simple flow-sensitive mechanical switch 260 in
As shown in
Energized water flow exits from the pump 230 through the outlet 235. According to an exemplary embodiment, a flexible hose 217, such as a common garden hose, is coupled to the outlet 235 with the hose coupler or garden hose connector 236 (e.g., threaded fittings, quick connect, snap fittings, and the like). The flexible hose 217 may be made from a wide variety of commonly known materials such as vinyl, rubber, composite, and the like. For example, typical garden hose (or “hosepipe”) characteristics may vary depending design choice, such as hose dimensions, gauge, material, reinforcement, and the like. Some exemplary garden hoses are constructed of a synthetic rubber and/or soft plastic. These hoses are reinforced with internal or external fiber webbings, such as nylon or polyester tire-cords. Certain exemplary hoses are “reinforced vinyl” garden hoses. Due the variety of design choices and available materials, different commercial garden hoses have a broad range of “burst strengths” or “burst ratings,” the maximum allowable internal pressures that a hose can withstand before rupture. Some exemplary lower-quality hoses have a burst rating of about 1.4 MPa (200 psi). Other exemplary medium-quality hoses have burst ratings ranging from about 1.9 to 2.4 MPa (275 to 350 psi). Still other exemplary higher-quality garden hoses have burst ratings from about 2.4 to 3.4 MPa (350 to 500 psi) or higher, such as about 7 MPa (1000 psi). Therefore, booster water spraying systems, such as those described herein that may operate with typical garden hoses, may be better suited for such operation than “true” pressure washers due to characteristics of the garden hoses, such as their “burst ratings.”
A variable outlet 240 (e.g., sprayer, nozzle, spout, head, fountain, sprinkler, flow sink, and the like) may be provided on a remote end of the hose 217. The variable outlet 240 is coupled to the hose 217 with a commonly known fitting or coupling and is configured to allow a user to manage the water flow out of the garden hose sprayer system 210 (e.g., point and spray). According to some preferred exemplary embodiments, the variable outlet 240 may include multiple mechanisms for controlling water output, such as a rotatable head portion 242, which may include a plurality of patterned openings 246, 248 of different sizes and/or shapes; a flow restriction valve 250; and/or a flow control valve 252.
In some embodiments the flow-restriction valve 250 is manipulated by a trigger 254 located on the variable output 240. The flow-restriction valve 250, for example, may be configured to be opened when a user pulls the trigger 254, allowing water to be expelled from the variable output 240 through one of the openings 246, 248, and closed when a user releases the trigger 254. To this end, the flow-restriction valve 250 may be biased to the closed position with a spring, an elastic band, a counterweight, and/or other suitable biasing member.
The variable output 240 may also include a chemical container 272 for storing and transferring chemicals into the water flow. For example, the container may hold a liquid plant fertilizer that is pulled into the water flow by a lower pressure Venturi within the flow path (much like fuel insertion in air passing through a carburetor of a combustion engine, or aeration systems in fish tanks) In other embodiments, mechanical energy is transferred from pulling the trigger 254, to squeeze chemicals from the container into the water flow.
As shown in
Referring now to
Referring to FIGS. 10 and 17-21, the head 916 of the spray gun 910 includes a plurality of nozzles 930, 932, 934, 936, 938 that may be rotated into and out of the flow path 914 of the spray gun 910. In some embodiments, at least one of the plurality of nozzles 930, 932, 934, 936, 938 includes a group (e.g., series, array, pattern) of small orifices 940 (
Referring specifically to
Furthermore, the orifices 940 of the nozzle 938 shown in
In some embodiments, the plurality of nozzles 930, 932, 934, 936, 938 includes a larger opening 946 (
Referring to
In some embodiments, the body 912 further includes a second trigger 952 (e.g., button, interface) to control communication of chemicals from the chemical container 950 to the flow path 914. The trigger 952 may be a manual pumping trigger, similar to the trigger 272 as shown in
According to an exemplary embodiment, an outlet 960 for the chemical conduit 958 is integrated into each nozzle 930, 932, 934, 936, 938 of the plurality on the head 916 of the spray gun 910. In some such embodiments, the outlet 960 of the chemical conduit is centered within the water flow path 914 of each nozzle 930, 932, 934, 936, 938 of the plurality of nozzles, such as within the center of single openings 946, 948 or in between the orifices 940, 942, 944. Centering the outlet 960 in the water flow path 914 allows the water flowing from the active nozzle to draw chemicals into the water, which may then be carried in the center of the outgoing stream.
As shown in
According to still other exemplary embodiments, a user may adjust the flow rate of the variable output 240 with a flow control valve 252. Such a valve 252 may be provided internally in the variable output 240 and be any of a wide variety of different types of valves (e.g., a gate valve, poppet valve, plug valve, butterfly valve, globe valve, ball valve, etc.). Embodiments including a flow control valve 252 may gradually constrict or release water flow through the outlet 240, for example, by tightening or loosening the valve, such as by a knob and screw mechanism.
Referring to
The garden hose spray system 310 further includes a controller 320 in communication (e.g., fluidic, mechanical, wired, wireless, and/or other communication) with the pump 330, and the controller 320 operates a switch 324 provided between the power source 318 and the pump 330. Closing the switch 324 allows power to drive the pump 330 and opening the switch 324 prevents power from driving the pump 330.
In the
The garden hose spray system 310 further includes a variable outlet 340 operable at a first flow setting and a second flow setting, such as a sprayer head, nozzle, spraying brush, and the like, with adjustable flow rate settings having a plurality of discreet “calibrated” outlet cross-sectional patterns, as shown in
According to one exemplary embodiment, as shown in
In the embodiment of
A logic module, algorithm, and/or scheme configured to apply the logic presented in the matrix 480 may be implemented in several steps. In some embodiments, a sensor may produce a reading, and the reading may be relayed to a control circuitry, as discussed below in regard to
In some embodiments, with the motor 232 as a combustion engine, a logic module (or algorithm) may include a controller interaction with components for controlling the combustion engine. For example, if a flow sensitive switch senses a positive flow, and relays the flow information to the controller, the controller may then activate a solenoid that engages a clutch (e.g., centrifugal clutch) coupled to a crankshaft of the engine (e.g., acting as a mechanical switch). The crankshaft may then power the pump. However, if the flow sensitive switch senses no flow, or a positive flow rate less than a threshold flow rate, then the controller may activate a solenoid to disengage the clutch, idle the engine, and decouple the crankshaft from the pump. In some exemplary embodiments with combustion engines, variant logic algorithms may have the controller idle the engine when the flow is below the threshold, turn off the engine, or idle the engine for a set time period of sensed flow rate below the theshold before turning off the engine.
Other embodiments, such as those similar to system 311 of
Further referring to
The control circuit 523 of
In some embodiments, the logic module 527 is configured to implement one or more steps based upon the matrix shown in
The processor 525 can be or include one or more processing components or processors. The processor 525 can be a general purpose processor, an application-specific integrated circuit, and/or any other collection of circuitry components configured to conduct the calculations or to facilitate the activities described herein. The processor 525 can be configured to execute computer code, script code, object code, and/or other executable instructions stored in memory 529, other memory, or in the processor 525. In some embodiments, the memory 529 may store coded instructions, such as the logic module 527, in various states, such as volatile, non-volatile, RAM, ROM, solid states, and the like. In certain embodiments, the logic module 527 may be stored in a separate memory, such as a memory of one or more remote computers coupled to the system 510 via an external computer network, local area network, and/or the internet.
Also referring to
Referring to
Referring to
Referring to
Still referring to
As utilized herein, the terms “approximately,” “about,” “proximate,” “substantially,” and similar terms are intended to have a broad meaning in harmony with the common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. These terms are intended to allow a description of certain features described and claimed without restricting the scope of these features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as indicating that insubstantial or inconsequential modifications or alterations of the subject matter described and claimed are considered to be within the scope of the invention as recited in the appended claims.
The term “exemplary” as used herein to describe various embodiments is intended to indicate that such embodiments are possible examples, representations, and/or illustrations of possible embodiments.
The terms “coupled,” “connected,” and the like as used herein mean the joining of two members directly or indirectly to one another. Such joining may be stationary (e.g., permanent) or moveable (e.g., removable or releasable). Such joining may be achieved with the two members or the two members and any additional intermediate members being integrally formed as a single unitary body with one another or with the two members or the two members and any additional intermediate members being attached to one another.
References herein to the positions of elements (e.g., “top,” “bottom,” “above,” “below,” etc.) are merely used to describe the orientation of various elements in the accompanying drawings. The orientation of various elements may differ according to other exemplary embodiments, and that such variations are intended to be encompassed by the present disclosure.
The construction and arrangement of the garden hose spray system as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. The order or sequence of any process, logical algorithm, or method steps may be varied or re-sequenced according to alternative embodiments. Other substitutions, modifications, changes and omissions may also be made in the design, operating conditions and arrangement of the various exemplary embodiments without departing from the scope of the present invention.
Claims
1. A water spray gun, comprising:
- a body providing a flow path;
- a head configured to rotate relative to the body and comprising a plurality of nozzles that may be rotated into and out of the flow path, wherein at least one of the plurality of nozzles comprises a group of small orifices; and
- a chemical container coupled to body and configured to provide chemicals to the flow path.
2. The water spray gun of claim 1, wherein the group of small orifices is configured to condition water flowing along the flow path by separating the flow into smaller parallel streams to reduce turbulence in the water.
3. The water spray gun of claim 1, wherein the plurality of nozzles comprises a larger opening and a smaller opening, wherein the larger opening allows a greater flow rate through the spray gun than the smaller opening.
4. The water spray gun of claim 3, wherein the larger and smaller openings are each single openings.
5. The water spray gun of claim 4, wherein the orifices of the group of small orifices are arranged in a symmetric pattern.
6. The water spray gun of claim 4, wherein the plurality of nozzles further comprises a second group of small orifices.
7. The water spray gun of claim 6, wherein the group of small orifices provides a greater flow rate than the second group of small orifices at a given water pressure.
8. The water spray gun of claim 1, further comprising a trigger configured to control the communication of chemicals from the chemical container to the flow path.
9. The water spray gun of claim 8, further comprising a chemical conduit having an outlet integrated with each nozzle of the plurality of nozzles.
10. The water spray gun of claim 9, wherein the outlet of the chemical conduit is centered within the flow path of each nozzle of the plurality of nozzles.
11. A control system for a water pump assembly that uses water to communicate control signals to the pump, comprising:
- a water pump having an inlet and an outlet;
- a spray gun configured to receive water from the outlet of the water pump via a hose connected to the outlet, the spray gun comprising: a body providing a flow path through the water spray gun; and a head configured to rotate relative to the body and comprising a plurality of nozzles that may be rotated into and out of the flow path of the spray gun, wherein the plurality of nozzles comprises a larger opening and a smaller opening, wherein the larger opening allows a greater flow rate through the spray gun than the smaller opening; and
- a sensor configured to provide a signal to control the water pump based upon a characteristic of the water flow that corresponds to whether the larger or smaller opening of the spray gun is being used.
12. The control system of claim 11, wherein at least one of the plurality of nozzles comprises a group of small orifices.
13. The control system of claim 12, wherein the group of small orifices is configured to condition water flowing along the flow path by separating the flow into smaller parallel streams to reduce turbulence in the water.
14. The control system of claim 11, wherein the larger and smaller openings are each single openings.
15. The control system of claim 11, further comprising a chemical conduit having an outlet integrated with each nozzle of the plurality of nozzles.
16. The control system of claim 11, wherein both the inlet and the outlet of the water pump have garden hose connectors, and wherein the spray gun is configured to be fastened to a garden hose.
17. The control system of claim 16, wherein the sensor is integrated with the water pump and the setting of the spray gun is communicated through the garden hose to the sensor.
18. The control system of claim 17, wherein the sensor is a flow rate sensor.
19. The control system of claim 18, wherein the sensor provides a signal to engage the water pump when the larger opening is being used.
20. The control system of claim 19, wherein the sensor provides a signal to disengage the water pump when the smaller opening is being used.
Type: Application
Filed: Sep 21, 2011
Publication Date: Jan 12, 2012
Applicant:
Inventor: Richard J. Gilpatrick (Whitewater, WI)
Application Number: 13/239,208