The present invention relates to pumps, and, more specifically, to a pump system for moving liquid into and out of a chamber through acceleration of the liquid.
Pumps move substances by some type of driving mechanism, i.e., mechanical action. Power to drive the driving mechanism may be derived from energy sources such as manual work (e.g., a hand crank) or electricity, for example. A basic type of pump is a positive displacement pump. Generally, positive displacement pumps operate between two valves, a discharge valve and a suction valve. As the pump operates, liquid enters the pump through the suction valve and through action by a driving mechanism, an amount of liquid is dispelled through the discharge valve.
Reciprocating pumps are a type of positive displacement pump that use a driving mechanism to change liquid volume in a chamber between two valves in order to create a pressure differential that forces liquid through the valves (into the chamber and out of the chamber). Specifically, reciprocating pumps typically use a driving mechanism such as a plunger, piston, or diaphragm (or any other type of flexible membrane) to create a pressure differential that pulls in liquid (through the suction valve) and dispels liquid (through the discharge valve). In traditional reciprocating pumps, it is required to have the drive mechanism act directly on a liquid contained in a chamber, changing the physical volume of the chamber. Pneumatics, hydraulics, or electricity, for example, is required to move the plunger or piston through the liquid contained in the chamber, changing the physical volume of the chamber. Similarly, hydraulics or air mechanisms, for example, are required to flex portions of a diaphragm to cause the physical volume change of the liquid chamber, creating a liquid pressure differential to moves the liquid through its intended directional valves. Thus, in current reciprocating pumps, the drive mechanism (e.g., piston or plunger) requires some form of sealing or specific design to eliminate or prevent liquid from entering the atmosphere outside the pump. Also, the drive mechanism extends into the chamber, potentially contaminating the liquid (or eroding the drive mechanism), or the chamber is constantly experiencing a pattern of distortion. As a result, the drive mechanism, seals, and the chamber of traditional reciprocating pumps are subject to wear and tear that can be exacerbated by the type of liquid passing through the pump.
There is, therefore, a continued need for a reciprocating pump that does not have a drive mechanism that extends into the chamber, requires seals, or that distorts the chamber.
Description of the Related Art Section Disclaimer: To the extent that specific patents/publications/products are discussed above in this Description of the Related Art Section or elsewhere in this disclosure, these discussions should not be taken as an admission that the discussed patents/publications/products are prior art for patent law purposes. For example, some or all of the discussed patents/publications/products may not be sufficiently early in time, may not reflect subject matter developed early enough in time and/or may not be sufficiently enabling so as to amount to prior art for patent law purposes. To the extent that specific patents/publications/products are discussed above in this Description of the Related Art Section and/or throughout the application, the descriptions/disclosures of which are all hereby incorporated by reference into this document in their respective entirety(ies).
The present invention relates to a reciprocating pump.
In an aspect, a pump is provided comprising a chamber of fixed volume having a first end and second end, and sized, shaped and adapted to contain a mass of liquid; a suction directional valve connected to the first end of the chamber; a discharge directional valve connected to the second end of the chamber; a selectively actuable power source attached to the pump, wherein the power source, when actuated, moves the pump in a reciprocating motion.
In an embodiment, the fixed volume chamber extends along a longitudinal axis
In an embodiment, the reciprocating motion is linear along the longitudinal axis.
In another aspect, a pump is provided comprising a chamber of fixed volume, having a first end and a second end, and sized, shaped and adapted to contain a mass of liquid therein; a first liquid conduit of first predetermined length positioned in liquid communication with the fixed volume chamber and adjacent the first end thereof, the first liquid conduit having a first conduit first end and a first conduit second end, a first suction directional valve connected to the first conduit first end, and a first discharge directional valve connected to the first conduit second end; a second liquid conduit of second predetermined length positioned in liquid communication with the fixed volume chamber and adjacent the second end thereof, the second liquid conduit having a second conduit first end and a second conduit second end, a second suction directional valve connected to the second conduit first end, and a second discharge directional valve connected to the second conduit second end; a selectively actuable power source attached to the pump, wherein the power source, when actuated, moves the pump in a reciprocating motion causing acceleration of the mass of liquid within the fixed volume chamber.
In an embodiment, the chamber of fixed volume extends along a first longitudinal axis
In an embodiment, the reciprocating motion is linear along the first longitudinal axis.
In an embodiment, the first suction directional valve and the second suction directional valve are each positioned on one side of the first longitudinal axis, and the first discharge directional valve and the second discharge directional valve are each positioned on the opposite side of the first longitudinal axis.
In an embodiment, the first liquid conduit extends along a second longitudinal axis that is transverse to the first longitudinal axis.
In an embodiment, the second liquid conduit extends along a third longitudinal axis that is transverse to the first longitudinal axis.
In an embodiment, the first liquid conduit and second liquid conduit are each positioned relative to the fixed volume chamber such that they intersect with the chamber at their respective midpoints along their first and second predetermined lengths, respectively.
In another aspect of the invention, a method is provided for pumping a liquid using a pump having a chamber of fixed volume, a first suction directional valve connected to the chamber at a first end thereof, a first discharge directional valve connected the chamber at a second end thereof, and a power source connected to the pump for imparting reciprocating motion thereto, the method comprising filling the fixed volume chamber with a mass of liquid; and actuating the power source to impart reciprocating motion to the fixed volume chamber, whereby the reciprocating motion accelerates the mass of liquid within the fixed volume chamber.
The present invention will be more fully understood and appreciated by reading the following Detailed Description in conjunction with the accompanying drawings, in which:
Referring now to the drawings, wherein like reference numerals refer to like parts throughout, there is seen in
As shown in
First, a liquid mass within the pump 10 is subject to reciprocating motion along axis A-A. As used herein, the phrase “reciprocating motion” can mean a repetitive up-and-down or back-and-forth linear motion, or some form of non-linear motion such as elliptical, although the non-linear motion will be less efficient than the linear motion. With the pump in the first configuration shown in
While the pump 10 (and the liquid mass) is experiencing the reciprocating motion, the liquid within the fixed volume chamber 16 is accelerated. Due to the acceleration, the liquid mass generates a force. At the end of the stroke, pump 10 stops momentarily before beginning its stroke in the opposite direction. When pump 10 stops, the liquid force in fixed volume chamber 16 is imparted onto the liquid discharge directional valve 14. With sufficient acceleration, the force is strong enough to overcome the force holding the discharge directional valve 14 in a closed position. When the force of the liquid mass overcomes the holding force of the discharge directional valve 14, the liquid mass exits the fixed volume chamber and is “pumped” through the discharge directional valve 14 in the open position. When the discharge directional valve 14 is in the open position, the pump 10 is in the second configuration shown in
Simultaneously, the liquid mass exiting through the discharge directional valve 14 located at the second end of fixed volume chamber 16, will create a void at the first end of the fixed volume chamber 16, near the suction directional valve 12. The void is physically at a lower pressure as compared to the liquid pressure “upstream,” of the suction directional valve 12. The lower pressure void in the fixed volume chamber 16 allows the suction directional valve 12 to move to an open position and the higher liquid pressure upstream of the suction directional valve 12 flows through the suction directional valve and fills the low pressure void in the fixed volume chamber 16, as shown in the second configuration of the pump in
Referring now to
The same physics based upon Newton's second law of motion as explained in regard to pump 10, also serves to drive pump 100. As shown in
Power source 18 will continue its motion and stroke pump 100 in the opposite direction toward the first end of fixed volume chamber 110 as shown in
The reciprocation and acceleration of the mass of liquid within the fixed volume chamber 110, conduit 112 and conduit 114, creates a liquid pressure differential in pump 100, that alternates the opening and closing of the suction directional valves and discharge directional valves.
All definitions, as defined and used herein, should be understood to control over dictionary definitions, definitions in documents incorporated by reference, and/or ordinary meanings of the defined terms.
While various embodiments have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the embodiments described herein. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments described herein. It is, therefore, to be understood that the foregoing embodiments are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, embodiments may be practiced otherwise than as specifically described and claimed. Embodiments of the present disclosure are directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprise” (and any form of comprise, such as “comprises” and “comprising”), “have” (and any form of have, such as, “has” and “having”), “include” (and any form of include, such as “includes” and “including”), and “contain” (any form of contain, such as “contains” and “containing”) are open-ended linking verbs. As a result, a method or device that “comprises”, “has”, “includes” or “contains” one or more steps or elements. Likewise, a step of method or an element of a device that “comprises”, “has”, “includes” or “contains” one or more features possesses those one or more features, but is not limited to possessing only those one or more features. Furthermore, a device or structure that is configured in a certain way is configured in at least that way, but may also be configured in ways that are not listed.
The corresponding structures, materials, acts and equivalents of all means or step plus function elements in the claims below, if any, are intended to include any structure, material or act for performing the function in combination with other claimed elements as specifically claimed. The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the invention. The embodiment was chosen and described in order to best explain the principles of one or more aspects of the invention and the practical application, and to enable others of ordinary skill in the art to understand one or more aspects of the present invention for various embodiments with various modifications as are suited to the particular use contemplated.
The present application relates and claims priority to U.S. Provisional Application No. 62/925,568, filed Oct. 24, 2019, the entirety of which is hereby incorporated by reference.
Number | Date | Country | |
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62925568 | Oct 2019 | US |