WO2013190535A1

WO2013190535A1 - Device and method for providing pressurized fluid

Info

Publication number: WO2013190535A1
Application number: PCT/IL2012/050218
Authority: WO
Inventors: Pinchas Shalev
Original assignee: Pinchas Shalev
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2013-12-27
Also published as: CA2877217A1; EP2863835A4; CN104582632A; BR112014032194A2; EP2863835A1; AU2012383218A1; JP2015527925A; RU2015101212A; KR20150028994A; CN104582632B

Abstract

A device for providing pressurized fluid is disclosed, operating of the pressure created during chemical reaction accompanied with effervescence effect that provides the required pressure for operation. The device is made to enable creation of the pressure due to chemical reaction between base and acidic materials, one of them may be provided in the form of a tablet. The device may be operated at virtually any angle with respect to the horizon, it may provide continuous pressurized fluid, pulsed pressurized fluid and one- shot pressurized fluid. The device may be adapted to provide the pressurized fluid in substantially constant flow rate through the entire range of operational pressure inside the device.

Description

DEVICE AND METHOD FOR PROVIDING PRESSURIZED FLUID

BACKGROUND OF THE INVENTION

[001] A number of portable devices for providing pressurized fluid or liquid are known in the art. One type comprises mechanical pressurizing means such as motor driven mini pump. Such devices require electrical power source which require either connection to wall socket and involves electrical shock hazard, or portable electrical devices requiring continuous replacement of batteries. Other known types of portable devices providing pressurized fluid acquire the pressure needed for their operation from a high-pressure gas cartridge or from an effervescent effect created due to a chemical reaction between two or more components, such an acidic component and a base component. Devices known in the art suffer from several drawbacks, such as the need to be permanently connected to a wall socket or the need to replace batteries often. In other devices using pressurized gas cartridges or where the source of pressure for the operation is received from the effervescence of chemical reaction suffer of unstable work conditions such as the working pressure and / or the working flow rate of the pressurized fluid. SUMMARY OF THE INVENTION

[002] A device for providing pressurized fluid according to embodiments of the present invention is disclosed comprising a container to contain said pressurized fluid in a first level of pressure, a feed tube to receive said pressurized fluid in said first level of pressure, a pressurized fluid control mechanism to control the provision of pressurized fluid, a fluid dispensing tube to provide pressurized fluid in a second level of pressure, said dispensing tube extending from one end of said container, a refilling cap adapted to close the second end of said container, said refilling cap is openable, and a flow rate regulator to provide pressurized in said second level of pressure and in substantially constant flow rate, when said first pressure is kept within a high limit and a low limit of pressure levels.

[003] A device for providing pressurized fluid according to yet other embodiments of the present invention is disclosed, comprising a container to contain said pressurized fluid in a first level of pressure, a feed tube to receive said pressurized fluid in said first level of pressure, a pressurized fluid control mechanism to control the provision of pressurized fluid, a fluid dispensing tube to provide pressurized fluid in a second level of pressure; said dispensing tube extending from one end of said container, a refilling cap adapted to close the second end of said container, said refilling cap is openable, and a dosing mechanism wherein the dosing mechanism comprising fluid dosing tube made of a flexible material to connect said feed tube to said pressurized fluid control mechanism, and flow limiter located at the point of connection of said feed tube to said fluid dosing tube, wherein said flow limiter is formed as two close parallel arms adapted to press said fluid dosing tube so as to limit the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[004] The subject matter regarded as the invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. The invention, however, both as to organization and method of operation, together with objects, features, and advantages thereof, may best be understood by reference to the following detailed description when read with the accompanying drawings in which:

[005] Figs. 1A and IB depict a device for providing pressurized fluid in empty state and filled with operational materials, respectively;

[006] Figs. 2A, 2B and 2C depict the device of Figs. 1A and IB in three different angles of inclination respectively, and their respective formation of a feed tube ensuring that the feed tube remains submerged in the liquid in the device;

[007] Fig. 3A schematically depicts partial cross sectional view of the end of a dispensing tube;

[008] Fig. 3B is a partial cross section, side view, of hand tool;

[009] Fig. 3C is a schematic partial cross section side view of hand tool;

[0010] Figs. 4A and 4B are schematic partial cross section top and side views, respectively, of a hand tool for providing pressurized fluid while vibrating;

[0011] Figs. 5A, 5B, 5C and 5D are schematic illustrations of a device for providing pressurized fluid in one dose for each activation of its trigger, according to embodiments of the present invention;

[0012] Figs. 5E and 5F are schematic illustrations of a device for providing pressurized fluid in one dose for each activation of its trigger, according to embodiments of the present invention;

[0013] Figs. 5G, 51, 5H and 5 J depict two forms of flow limiters, according to embodiments of the present invention;

[0014] Fig, 6 is an isometric schematic illustration of a device for providing pressurized fluid using pressurized gas cartridges for refilling of gas, according to embodiments of the present invention;

[0015] Fig. 7 is a schematic isometric illustration of a device for providing pressurized fluid, according to embodiments of the present invention; [0016] Figs. 8A and 8B schematically present a device for providing pressurized fluid and a corresponding gas refill container, respectively, according to embodiments of the present invention;

[0017] Figs. 9A and 9B schematically present isometric view with partial cut-out of a device for providing pressurized fluid and a blown view of a stirrer installed in the device, respectively, according to embodiments of the present invention;

[0018] Figs. 10A, 10B and IOC schematically present three embodiments of sprinkles protectors to be used with devices for providing pressurized fluid, according to embodiments of the present invention;

[0019] Figs. 11 A, 11B and 11C present schematic illustration of a device for providing pressurized fluid, an isometric view of a filling cap equipped with tablet crashing unit and partial cross section of the device, respectively, according to embodiments of the present invention;

[0020] Figs. 12A and 12B depict two embodiments of filling caps formed to accommodate and safely keep two different designs of tablets, according to embodiments of the present invention;

[0021] Fig. 13 presents a device for providing pressurized fluid, according to embodiments of the present invention; and

[0022] Figs. 14A and 14B schematically present a device for providing pressurized fluid and a flow rate regulator, respectively, according to embodiments of the present invention;

[0023] It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0024] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention.

[0025] US patent application No. 13/180,985, titled DENTAL TREATMENT APPARATUS AND METHOD, co-owned by the inventor of the present invention, which is incorporated herein by reference in its entirety, discloses a device for providing pressurized fluid. Reference is made now to Figs. 1A and IB, which depict device 10 adapted for providing pressurized fluid in its empty state state and when filled with operational materials, respectively as described in details in US application

No. 13/180,985 co-owned by the inventor of the present invention. Device 10 comprising a container 12 partitioned into a first compartment 12A and a second compartment 12B by a partition 12C adapted to allow free flow of liquid through that partition. The first compartment is adapted to contain liquid, the second compartment is adapted to receive a first and a second active material, a back cover is adapted to close the first end of the container, wherein the first end is closer to the second compartment, and an operation control means to control dispensing of pressurized liquid from that container. The operation control means is installed on a front cover closing the second end of the container, wherein the first active material and the second active material are adapted to produce a first pressure from an effervescence process when in a chemical reaction and this operation control means is adapted to reduce the first pressure to a second pressure. The second pressure is kept constant regardless of the orientation of the container with respect to the gravity direction. According to further embodiments of the present invention the device comprising dispensing tube connected at a first end to the operation control means to receive pressurized liquid in the second pressure and to dispense that pressurized liquid via a dispensing orifice. The device further comprising pulsating mechanism to provide the pressurized liquid to the dispensing orifice in at least one pulse. The number of said pulses in a time interval is controllable.

[0026] Reference is made now to Figs. 2A, 2B and 2C which depict device 10 in three different angles of inclination and their respective formation of feed tube 17 due to the installation of weight 17B at its distal end, to ensure that the distal end remains submerged in the liquid in device 10, as described in details in US application No. 13/180,985 co-owned by the inventor of the present invention. This way supply of pressurized liquid to regulator and open/close assembly 14 (Fig. 1A) or pressure regulating means 14A may be ensured until the liquid in device 10 substantially runs out.

[0027] Reference is made now to Fig. 3A which schematically depicts partial cross sectional view of the end of dispensing tube 310, as described in details in US application No. 13/180,985 co- owned by the inventor of the present invention. Dispensing tube 310 may have installed therein a spatial helix element 312 configured as a long-pitch thread or worm having a longitudinal axis coinciding with the longitudinal axis of the inner bore 313 of dispensing tube 310 and having an outer diameter which smoothly fits the inner diameter of bore 313 to allow smooth rotation of helix element 312 inside bore 313. Helix element 312 may have, according to embodiments of the present invention, an auxiliary axis 315 made at the end of helix element 312.

[0028] Pressurized liquid entering into dispensing tube 310 via bore 313 aiming to leave via dispensing outlet orifice 316 flows over helix element 312 and causes it to rotate rapidly about its axis. As a result sections 317 of the blades of helix element 312 pass over, and close to, the inner end of orifice 316 thus causing intermittent break of the flow of pressurized fluid through orifice 316. The number of such breaks in the flow of the pressurized fluid equals, substantially, to two times the rotational speed of helix element 312.

[0029] Reference is made now to Fig. 3B, which is a partial cross section side view of hand tool 320, as described in details in US application No. 13/180,985 co-owned by the inventor of the present invention. Hand tool 320 may comprise long bore 322 made inside it along its longitudinal dimension to allow providing of pressurized liquid and or pressurized gas. Bore 322 may be formed to provide pressurized fluid into toroidal space 324 in a tangential manner, so to cause rotational speedy movement of ball 326 in the plane of Fig. 3B. The rotational movement of ball 326 may cause two-dimensional combined vibration of hand tool 320. Accordingly, the pressurized fluid jet that emerges from outlet orifice 325 flows in pulsating manner.

[0030] Reference is made now to Fig. 3C, which is a schematic partial cross section side view of hand tool 330, as described in details in US application No. 13/180,985 co-owned by the inventor of the present invention. Pressurized fluid flowing via bore 332 and through formed fluid way 334 causes wheel 336 to turn, on its way to fluid orifice 337. As a result intermittent flow of the pressurized fluid is caused, rendering pulsating flow of pressurized jet through outlet orifice 337.

[0031] Reference is made now to Figs. 4A and 4B, which are schematic partial cross section top and side views of hand tool 400 for providing pressurized fluid while vibrating, as described in details in US application No. 13/180,985 co-owned by the inventor of the present invention. Hand tool 400 may comprise long bore 402 made inside it along its longitudinal dimension to allow providing of pressurized liquid and or pressurized gas. Pressurized fluid bore 402 may end with a narrowing fluid way 404 which may be formed to provide the pressurized fluid into engraved toroidal space 406 in a tangential direction via fluid outlet 404A. Toroidal space 406 is made to fit the size of ball 408, so that when ball 408 is urged to turn around inside toroidal space 406 it may turn freely but at the same time to provide good sealing between ball 408 when it turns around and the inner face of toroidal space 806. Hand tool 400 may further comprise outlet orifice 410 allowing the exit of a jet of pressurized fluid from the hand tool. When pressurized fluid enters toroidal space 406 via bore 402 and fluid way 404 it causes a vortex movement inside toroidal space 406 which turns in the direction of the arrow marked in toroidal space 406 of Fig. 4A. As a result ball 408 turns in the same direction and substantially in the same speed of the vortex. Each time ball 408 passes over fluid outlet 404A it blocked it for a short while, thus causing intermittent flow of the pressurized fluid into and out of toroidal space 406. Accordingly, the pressurized fluid jet that emerges from outlet orifice 410 in pulsating manner. Further, the speedy turning of ball 408 cause two-dimensional vibrations of hand tool 400 which are substantially in the plane of Fig. 8A

[0032] According to some embodiments of the present invention pressurized fluid may be provided one dose per each push on an activation trigger. Reference is made now to Figs. 5A, 5B, 5C and 5D, which are schematic illustrations of device 500 for providing pressurized fluid in one dose for each activation of its trigger, according to embodiments of the present invention. Figs. 5A and 5B depict pressurized fluid device 500 in cross section view and in partial section isometric view, respectively, when the mechanism of one-dose is in filled-up state. Device 500 comprise container body 502 filled with pressurized fluid, feed tube 510, dosing mechanism 511, activation trigger 530 and dispensing tube 530. Dosing mechanism 511 may comprise fluid dosing tube 512 and flow limiter 514. Dosing tube 512 may be made of a flexible material, allowing it to be filled with pressurized fluid, or to slirink so that its cross section will form a flattened oval shape when the pressure outside of dosing tube 512 is higher than the pressure inside it. The passage from feed tube 510 into dosing tube 512 via flow limiter 514 is made to allow slow flow. Flow from dosing tube 512 towards dispensing tube 520 is controlled by activation trigger 530, so that when the trigger is not activated the passage is closed and when it is activated the passage is free. Feed tube 510 may be submerged in the fluid of container 502 during the operational term of device 500. In times when activation trigger 530 is closed due to the pressure inside container 502 fluid fills feed tube 510 and, trough flow limiter 514 it fills also dosing tube 512. When activation trigger 530 is activated one end of dosing tube 512, that is connected to dispensing tube 520, faces low pressure (about 1 atmosphere) and therefore the fluid accumulated in it flows freely towards dispensing tube 520 and outside from it. The pressure inside container 502 flattens dosing tube 512 and prevents it from refilling quickly, as seen in Figs. 5C and 5D. Once trigger 530 is deactivated and closes fluid may slowly enter dosing tube 512 through flow limiter 514 until it refills fully and becomes ready for providing another one-dose of pressurized fluid. The amount of fluid contained in each dose made available as described above may be determined by the internal diameter of fluid dosing tube 512 and the distance L_D from the location of fluid limiter 514 to activation trigger 530.

[0033] Reference is made now also to Figs. 5E and 5F, which are schematic illustrations of device 550 for providing pressurized fluid in one dose for each activation of its trigger, according to embodiments of the present invention. Device 550 comprise container 552 for containing pressurized fluid, feed tube 560, dosing device 580, trigger 570 and dispensing tube 590. Dosing 580 may comprise cylinder 582 and piston 584 slidable with small tolerance inside cylinder 582, portioning it into entry side and outlet side. Spring 583 is adapted to push piston 584 towards the entry side of cylinder 582. Piston 584 may comprise one or more small apertures allowing slow flow of fluid through them. Feed tube 560 may be submerged in fluid at all time of operation, providing pressurized fluid into the entry side of cylinder. When trigger 570 is deactivated the outlet side of cylinder 582 is closed. Pressurized fluid may fill cylinder 582 fully and spring 583 may push piston 584 towards the entry side of cylinder 582. The movement of piston 584 is enabled because slow passage of fluid from one side of piston 584 to the other side is enabled via the small apertures. When trigger 570 is activated pressurized fluid from the outlet side of cylinder 582 flows out through dispensing tube 590. As a result the pressure in the outlet side of cylinder 582 drops to substantially the ambient pressure (about 1 Atm.) and due to the fact that on the other side of piston there is high pressure from container 552, piston 584 is pushed against the force of spring 583 towards the outlet side of cylinder 582 and blocks the passage of fluid towards dispensing tube 590. As a result a one-dose of pressurized fluid is dispensed. When trigger 570 is deactivated the passage from the outlet side of cylinder 582 to the ambient air is blocked, pressurized fluid may flow slowly via the apertures in piston 584 in refill the outlet side of cylinder 582, preparing for another dispensing of one-dose of pressurized fluid.

[0034] Reference is made now to Figs. 5G, 51, 5H and 5J, depicting two forms of flow limiter 514A, 514B, respectively, according to embodiments of the present invention. Flow limiter 514A may initially be formed from a flat ring having a small protrusion 514C made on its internal circumference. Flow limiter 514B may initially be formed from a flat ring having a small depression 514D made on its internal circumference. The ring may be flattened, as shown in Fig. 51 to form two close parallel arms having the protrusion 514C or the depression 514D located substantially at the median point of said arms. When flow limiter 514A is placed on the neck of dosing tube 512 it may slow down the flow through the neck yet protrusion 514C ensures that minimal flow will be enabled. In a similar manner flow limiter 514B may be made from a flat ring 514B having a small depression made on its internal circumference to ensure slow flow of fluid via flow limiter 514B.

[0035] Reference is made now to Fig, 6, which is an isometric schematic illustration of device 600 for providing pressurized fluid using pressurized gas cartridges for refilling of gas, according to embodiments of the present invention. Device 600 may comprise pressurized fluid container 602, activation trigger 602A, dispensing tube 602B, gas refill port 604 and gas cartridge housing 606 adapted to accommodate and firmly couple pressurized gas cartridge 700 (not part of the device) to refill port 604. Pressurized gas cartridge 6000 may be any known kind available for home use. It may be equipped with a gas valve activated when strongly depressed. Cartridge 6000 may be placed in housing 606, which may be firmly attached to refill port 604 by, for example, thread made on its neck and inside port 604. As is known in the art once gas cartridge 6000 has been fully discharged it may be removed from device 600.

[0036] Reference is made now also to Fig. 7, which is a schematic isometric illustration of device 700 for providing pressurized fluid, according to embodiments of the present invention. Device 700 may comprise container 702 for containing pressurized fluid, trigger 702A and dispensing tube 702B. Device 700 may further comprise gas refill connection 704, adapted to be connected to gas supply systems as known in the art. Device 700 may further comprise gas refill connection cap 704A adapted to protect gas refill connection when not used.

[0037] Reference is made now to Figs. 8A and 8B which schematically present device 800 for providing pressurized fluid and a corresponding gas refill container 8000, respectively, according to embodiments of the present invention. Device 800 may comprise container 802 for containing pressurized fluid, trigger 802A to control dispensing of the pressurized fluid and dispensing tube 802B to provide pressurized fluid where needed. Device 800 may further comprise refill port 804, which may be formed, for example, in the base of container 802. Refill port 804 may comprise fastening thread 804A and refill valve (not shown) to enable refill of gas into container 802 from an external refill container such as container 8000 and to prevent leakage of pressure from container 802 when not connected to refill container. Refill container 8000 may be equipped with fastening thread 8002A made to suit fastening thread 804A of device 800 and refill port 8002, adapted to provide pressurized gas into container 800 via refill port 804 when fully threaded together.

[0038] Reference is made now to Figs. 9A and 9B, which schematically present isometric view with partial cut-out of device 900 for providing pressurized fluid and a blown view of stirrer 904 installed in device 900, respectively, according to embodiments of the present invention. Device 900 comprises container 902, operating trigger 902A and dispensing tube 902B. Container 902 may further comprise stirrer 904, adapted to vibrate when pressurized fluid is dispensed from device 900, in order to urge arrested bubbles of gas to be released, thus enriching the dispensed pressurized fluid with bubbles. Stirrer 904 may be installed inside container 902, for example close to its bottom end. Stirrer 904 may comprise roller housing 9040 having a round groove 9042 formed inside it around the center pin 9044 of housing 9040, fins 9040A extending radially out from the outside surface of housing 9040, fluid inlet opening 9048 made to allow entrance of pressurized fluid from container 902 into housing 9040 so that the entering stream of pressurized fluid is aimed tangentially to the outer wall of groove 9042, and pressurized fluid outlet 9049 A, made in cover 9049 of housing 9040, allowing pressurized fluid entered into roller housing via inlet opening 9048 and to be directed into tube 9049B providing pressurized fluid to trigger 902A. Stirrer 904 further comprises roller roller 9046 fitted to be able to smoothly fit into and move inside groove 9042 around the center of stirrer 904. When trigger 902A is operated to release pressurized fluid from container 902 via dispensing tube 902B, the pressurized fluid flows into stirrer 904 from inlet 9048 and its rush into groove 9042 causes roller 9046 to spin around center 9044 of roller housing 9040 and as a result - to cause it to vibrate. The vibrations of stirrer 904 may urge release of bubbles arrested in the pressurized fluid and thus enrich the pressurized fluid leaving device 900 with high concentration of bubbles.

[0039] Reference is made now to Figs. 10A, 10B and IOC which schematically present three embodiments 1000A, 1000B and lOOOC, respectively, of sprinkles protectors to be used with devices for providing pressurized fluid, according to embodiments of the present invention. A device for providing pressurized fluid, as presented, for example, in Figs. 6, 7, 8A and 9A, may be equipped with fluid dispensing tube 1002 having dispensing orifice 1004 made at its distal tip to provide the pressurized fluid to a target, such as an object, a surface, etc. when pressurized fluid is dispensed via orifice 1004, either in a continuous flow, intermittent flow, one-dose flow or the like, it may spray undesired sprinkles around the desired area. In order to prevent or minimize the undesired spray dispensing tube 1002 may be equipped with spray protector, such as protector 1006, 1008 and 1010, made as piece of thin material that may be formed as flat or convex rounded object that may be attached at the distal end of dispensing tube 1002 against dispensing orifice 1004 and is adapted to stop spray bouncing from a sprayed object.

[0040] When one or more of the ingredients or materials participating in the chemical process that produces the pressure for the pressurized fluid, or for producing one or more of the additives to the fluid is provided in the form of a capsule or tablet it may be required to crash the tablet or break into small pieces prior to, or substantially concurrently with the initiation of the effervescence process to enable quicker process. Reference is made now to Figs. 11A, 11B and 11C, presenting schematic illustration of device 1102 for providing pressurized fluid, an isometric view of filling cap 1102A equipped with tablet crashing unit 1114 and partial cross section of device 1102 depicting filling cap 1102A and tablet crashing unit 1114, respectively, according to embodiments of the present invention. Container 1102B may be equipped with fluid dispensing tube 1102C and filling cap 1102A. When device 1102 is prepared for use filling cap is removed from container 1102B (for example by unscrewing it off the container) to enable refilling of container 1102B with fluid (such as water). At this stage a tablet (required for the effervescence process and/or chemical compound creation) may be inserted to a dedicated location formed in the inner side of filling cap 1102A, as seen in Fig. 11B. The inserted tablet may be secured from sideways movements by a plurality of movement limiters 1113, made and located so to fit the size and form of the tablets recommended for use with device 1102 so that when filling cap is returned to its place and screwed to close container 1102B the tablet is held in its place at the inner face of filling cap even when the cap is turned so the its inner face faces down, to cover the refilled container. Tablet crashing unit 1114 may be located at the end of container 1102B closer to the refilling opening. Tablet crashing unit 1114 may be made of two or more radially extending from the internal circumference of container 1102B close to its end adapted to be covered by cap 1102A, made of thin pieces of metal or similar material that may stand the chemical environment of device 1102 and provide the crashing and cutting impact required. Tablet crashing unit 1114 depicted in Figs. 1 IB and 11C comprises three radials of thin material meeting substantially in the center of the circle formed by filling cap 1102A and a small spine 1114A disposed substantially at the meeting point of the blades of crashing unit 1114. When filling cap 1102A is screwed back onto container 1102B the tablet is arrested in its location at the inner face of filling cap 1102A and as filling cap 1102A gets closer to the filling opening of container 1102B the tablet gets closer to spine 1114A until spine 1114A touches the tablet and initiates crashing process. As the screwing of filling cap 1102A progresses the blades of crashing unit 1114 meet the tablet and complete its crashing.

[0041] Reference is made now to Figs. 12A and 12B, depicting two embodiments of filling caps 1204, 1214 formed to accommodate and safely keep two different designs of tablets Tabletl and Tablet2, according to embodiments of the present invention. Filling cap 1204 is formed to accommodate Tabletl formed as a rectangle with rounded corners. Locators 1204A and 1204B are made to locate Tabletl (locators 1204A) and to locate and hold (locators 1204B). Filling cap 1214 is formed to accommodate Tablet2 formed as a rounded capsule having formed therein on at least one of its flat faces grooves made to match centering locators 1214B. When Tablet2 is properly located inside filling cap 1214 its pre-prepared grooves are located on radial locators 1214B thus centering Tablet2 and locators 1214A further locate and hold Tablet2 in place.

[0042] In some instances it may be desired to enable refilling of the container of a device for providing pressurized fluid from water tap that is installed close to its sink so that it is hard or even impossible to hold the container upright with the refilling opening facing up. Reference is made to Fig. 13 presenting device 1300 for providing pressurized fluid, according to embodiments of the present invention. Device 1300 may comprise container 1302 and fluid dispensing tube 1302A similar to embodiments presented above. However, in this embodiment container 1302 may have refilling opening 1304 made on the sidewall of container 1302. This way container 1302 may be refilled with fluid when it is held with its longitudinal axis is substantially horizontal, thus allowing refilling from a tap having small free space underneath it. Cap 1306 of device 1300 may be formed similar to one of the embodiments presented above, or in a different way, as may be required.

[0043] Devices for providing pressurized fluid employing relatively small containers and that are not connected to continuous source of pressure typically suffer from unstable rate of flow of the pressurized fluid. Typically such devices will have higher flow rate when the internal pressure inside the container is high and the flow rate drops gradually as the pressure inside the container drops. Reference is made now to Figs. 14A and 14B, schematically presenting device 1400 for providing pressurized fluid and flow rate regulator 1450, respectively, according to embodiments of the present invention. Device 1400 may comprise container 1402 operating trigger 1404 and fluid dispensing tube 1406. Device 1400 may further comprise flow rate regulator 1408, disposed inside container 1402. Flow rate regulator 1408 may comprise housing 1408A having inlet port 1408B facing the pressure PI inside container 14082, outlet port 1408E connected to operating trigger 1404 and regulating disk 1408C. Regulating disk 1408C may be made of a semi-flexible flat material, such a hard rubber. An orifice 1408C may be made through disk 1408C formed as a tapering hole having its wider opening facing the side of PI and its smaller opening facing the other side of disk 1408C. The principle of operation of flow rate regulator 1408 is explained with regards to flow rate regulator 1450 of Fig. 14B. Flow rate regulator 1450 may have main housing 1450A, inlet port 1450A that is facing the side of pressure PI prevailing inside the pressurized fluid container (not shown) and outlet port 1450E that may be connected to an operating mechanism and to fluid dispensing tube (both not shown). Regulating disk 1450C may be disposed inside housing 1450A forming a partition between inlet port 1450B and outlet port 1450E. Orifice 1450D may be made through disk 1450C having a tapered, or conical shape with its wider opening faces the side of PI. According to some embodiments disk 1450C may be formed so that when it is placed in place inside housing 1450A it is convexes a bit. Orifice 1450D is made to determine the flow rate from inlet port 1450B to outlet port 1450E. As the actual area of the opening of orifice 1450D gets bigger the flow rate of pressurized fluid through it becomes bigger, and vice versa. The size of orifice 1450D may be determined so that at all operation conditions it will not fully close. When a container of the device of the invention is under pressure (PI) and the operating mechanism is closed, pressure P2 prevailing at the outlet port 1450E will eventually substantially equal to pressure 1. When the operating mechanism is opened pressure P2 drops to equal substantially to the pressure prevailing outside of the device. As a result, pressure PI, being much higher than P2 causes disk 1450C to flatten a bit and as a result orifice 1450D gets smaller, thus limiting the flow rate of pressurized fluid through it. When, during the use of the device, pressure PI drops gradually, the difference of pressure across disk 1450C drops linearly with it and thus causing orifice 1450D to gradually open and maintain substantially constant flow rate of pressurized fluid with pressure PI changing from highest value to its lowest operational value. It shall be noted that other types of flow rate regulators may be used, each of which complying with the operational requirements being the dynamic range of pressure PI change between Plmax to Plmin, and the required flow rate. FR.

[0044] While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those of ordinary skill in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

Claims

CLAIMS [0045] What is claimed is:

1. A device for providing pressurized fluid comprising:

a container to contain said pressurized fluid in a first level of pressure; feed tube to receive said pressurized fluid in said first level of pressure; a pressurized fluid control mechanism to control the provision of pressurized fluid;

fluid dispensing tube to provide pressurized fluid in a second level of pressure, said dispensing tube extending from one end of said container;

a refilling cap adapted to close the second end of said container, said refilling cap is openable; and

a flow rate regulator to provide pressurized in said second level of pressure and in substantially constant flow rate, when said first pressure is kept within a high limit and a low limit of pressure levels.

2. The device of claim 1 further comprising fluid stirrer, said stirrer comprising:

a roller housing, comprising:

a center pin;

a round groove formed around said center pin;

plurality of fins extending radially from said housing;

fluid inlet opening to allow entrance of said pressurized fluid into said housing through said groove;

a roller housing cover, comprising pressurized fluid outlet; and

a roller, adapted to fit smoothly inside said groove so that when pressurized fluid flows through said fluid inlet, said groove and said pressurized fluid outlet it causes said roller to spin around said center pin.

3. The device of claim 2 further comprising:

gas refill port made in said refilling cap, adapted to receive a gas cartridge housing;

gas cartridge housing adapted to enclose a gas cartridge and to firmly be attached onto said gas refill port.

4. The device of claim 1 further comprising sprinkles protector attached to said

dispensing tube close to its end distal from said container.

5. The device of claim 1 further comprising:

a tablet crashing unit comprising more than one blade extending from the inside circumference of said container close to its refill opening;

a spine disposed at the meeting point of said blades; and

tablet movement limiters disposed on the inner face of said refilling opening.

6. The device of claim 5, wherein said tablet movement limiters are selected from a group comprising a set of movement limiters formed on a circumference of a rectangle and a set of movement limiters circumference of a circle.

7. A device for providing pressurized fluid comprising:

a container to contain said pressurized fluid in a first level of pressure;

feed tube to receive said pressurized fluid in said first level of pressure;

a pressurized fluid control mechanism to control the provision of pressurized fluid;

fluid dispensing tube to provide pressurized fluid in a second level of pressure; said dispensing tube extending from one end of said container;

a dosing mechanism comprising:

fluid dosing tube made of a flexible material to connect said feed tube to said pressurized fluid control mechanism; and

flow limiter located at the point of connection of said feed tube to said fluid dosing tube,

wherein said flow limiter is formed as two close parallel arms adapted to press said fluid dosing tube so as to limit the flow rate.

8. The device of claim 7 further comprising:

9. The device of claim 7 further comprising sprinkles protector attached to said

dispensing tube close to its end distal from said container.

10. The device of claim 7 further comprising: a tablet crashing unit comprising more than one blade extending from the inside circumference of said container close to its refill opening;

a spine disposed at the meeting point of said blades; and

tablet movement limiters disposed on the inner face of said refilling opening.

11. The device of claim 10, wherein said tablet movement limiters are selected from a group comprising a set of movement limiters formed on a circumference of a rectangle and a set of movement limiters circumference of a circle.