Compact double acting crankless air compressor and water pump
The crank-less reciprocating mechanism addresses inefficiencies in conventional double acting compressors by using a chain-and-sprocket assembly for efficient, compact, and cost-effective air compression and water pumping with adjustable stroke length.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- VASHISHTHA NISHANT
- Filing Date
- 2026-02-13
- Publication Date
- 2026-07-16
AI Technical Summary
Conventional double acting compressors and pumps are bulky, heavy, difficult to construct and maintain, and inefficient due to crank-based motion conversion, leading to high costs and lower adaptability.
A compact, crank-less reciprocating mechanism using a chain-and-sprocket assembly to convert rotary motion into reciprocating motion, enabling simultaneous suction and compression on both sides of the piston, with adjustable stroke length without crank modification.
Achieves efficient, compact, and cost-effective operation with minimal energy loss, allowing for easy maintenance and transport, and improved volumetric efficiency.
Smart Images

Figure IB2026051412_16072026_PF_FP_ABST
Abstract
Description
COMPACT DOUBLE ACTING CRANKLESS AIR COMPRESSOR AND WATER PUMPTECHNICAL FIELD
[0001] The present disclosure relates generally to the field of mechanical engineering, and more particularly to the field of compression and pumping systems and equipments. In particular, the present disclosure relates to a double acting, compact, crank-less reciprocating mechanism capable of both high-pressure air compression and water pumping, suitable for industrial and portable use.BACKGROUND
[0002] As known in the art, conventional reciprocating piston-type air compressors and water pumps operate either as single acting or double acting units. In single acting devices, each piston stroke performs only suction or compression (pumping) sequentially, limiting efficiency and output of the system or the device . While double acting devices generally enable simultaneous suction and compression (pumping) on opposite faces of the piston.
[0003] However, currently available double acting compressors or pumps are very bulky, heavy, and difficult to construct, maintain, or transport due to large, crank-based motion conversion and associated parts.
[0004] Further, these conventional double acting compressors or pumps are also not optimized for space, which again results in higher costs and lower adaptability.
[0005] Furthermore, the crank mechanism of such conventional compressors or pumps not only increases size and complexity, but also leads to energy loss by requiring wide-angle rotational conversion and necessitating significant assembly modifications for stroke adjustment.
[0006] Thus, there is a need for a compact, energy-efficient, easy to manufacture and maintain, double acting piston compressor and / or pump system that dispenses with the crank and achieves direct rotary motion to linear reciprocation with minimum space, lower losses, and efficient adjustability.OBJECTS OF THE PRESENT DISCLOSURE
[0007] A general object of the present disclosure is to provide a double acting reciprocating air compressor and water pump mechanism for domestic and industrial purpose.
[0008] An object of the present disclosure is to provide a double acting reciprocating air compressor and water pump mechanism that eliminates the crank, enabling compact, efficient, and cost-effective construction
[0009] Yet another object of the present disclosure is to provide a double acting reciprocating air compressor and water pump mechanism for achieving simultaneous suction and compression (or pumping) action on both sides of the piston, improving volumetric efficiency.SUMMARY
[0010] Aspects of the present disclosure generally relate to the field of mechanical engineering, and in particular to the field of compression and pumping systems and equipments. More particularly, the present disclosure relates to a double acting, compact, crank-less reciprocating mechanism capable of both high-pressure air compression and water pumping, suitable for industrial and portable use.
[0011] An aspect of the present disclosure relates to a double acting, compact, operated without crank, reciprocating piston type air compressor and water pump.
[0012] In an aspect, the proposed compact double acting air compressor and water pump may be used to compress air and pump water easily and effectively and with very high pressure with compact in size.
[0013] In an aspect, in the disclosed double acting mechanism, during the reciprocating motion of piston, the piston may suck and compress or pump from both side of piston one by one, i.e., if one side of the piston is sucking, at the same time other side of piston is compressing or pumping. Thus, for converting a rotary motion into a reciprocating motion for the piston motion, there is no use or even need of crank.
[0014] Another aspect of the present disclosure pertains to a crank-less double acting reciprocating piston system usable as an air compressor and / or water pump. The crank-less double acting reciprocating piston system may comprise a double acting cylinder with nonreturn valves at both ends, a piston with seals connected to a piston rod and reciprocable within the cylinder, a chain-and-sprocket assembly with at least one fixed and one adjustable sprocket, driven by a rotary motor, and operatively coupled to the piston rod via connecting rods and pins, such that rotary motion of the motor yields reciprocating piston motion without use of acrank, and a stroke -tuning screw and sliding mechanism mounting the adjustable sprocket on a guide rail, enabling continuous adjustment of the piston stroke length without part swap or crank modification.
[0015] In an aspect, the proposed crank-less double acting reciprocating piston system may effect suction and compression or pumping alternately on both sides of the piston during reciprocation, and occupies substantially less volume than a conventional crank-based compressor or pump.
[0016] Another aspect of the present disclosure pertains to a double acting reciprocating air compressor and water pump system. The double acting reciprocating air compressor and water pump system may include:
[0017] a double-acting cylinder comprising a first fluid chamber at a first end and a second fluid chamber at a second end; a piston disposed within the double-acting cylinder; a piston rod coupled to the piston; at least one intake non-retum valve (NRV) and one discharge nonreturn valve disposed at each end of the double-acting cylinder; a chain mechanism comprising a chain adapted to follow an obround path and coupled to a fixed sprocket and an adjustable sprocket; a rotary drive motor comprising a rotor shaft coupled with the fixed sprocket enabled to rotate the fixed sprocket; a connecting rod comprising one end coupled to the chain via a connecting pin and another end coupled with a connecting socket for operatively coupling with the piston rod; and a stroke adjustment assembly comprising a stroke tune screw, a stroke tune pin and a linear guide rail.
[0018] In an aspect, a rotary motion of the fixed sprocket may drive the chain resulting in a reciprocating motion of the piston thereby enabling simultaneous suction stroke on one side and compression or pumping stroke on an opposite side of the piston.
[0019] In an aspect, the stroke tune screw may be enabled for a tool-free stroke length adjustment of a stroke length of the piston without a crank along the linear guide rail, such that a rotation of the stroke tune screw moves the adjustable sprocket for dynamically and proportionally tuning a chain tension in the chain and the stroke length, precisely controlling piston displacement and air delivery.
[0020] In another aspect, the connecting rod may further include rotatable bearings to accommodate angular displacement during piston motion.
[0021] In an aspect, the piston may be adapted to be fitted with a piston sealing ring configured for dual-fluid operation of the simultaneous suction stroke and compression or pumping stroke of the piston.
[0022] In an aspect, the piston may be enabled to operate at a minimum stroke length of at least 50 mm.
[0023] In an aspect, the connecting pin may be enabled to travel substantially in a linear-dominant path rather than a radial path.
[0024] In an aspect, the adjustable sprocket bearing may be located coaxially with the stroke tune pin to transmit axial translation from the stroke tune screw directly to sprocket position of the adjustable sprocket bearing.
[0025] In an aspect, the rotary drive motor may be an electric motor selected from a group comprising an electric AC, DC, brushless DC, servo, or permanent-magnet motor.
[0026] In an aspect, the non-retum valves may be selected from a group of spring-loaded or reed-type valves.
[0027] In an aspect, the chain may be made of at least one or a combination of: an alloy steel, reinforced polymer, stainless steel, or carbon composite links.
[0028] In an aspect, the double-acting cylinder may be made from at least one or a combination of: cast iron, aluminium alloy, stainless steel, or ceramic -coated alloy.
[0029] In an aspect, the stroke length may be adjusted, i.e., the stroke length may be varied by changing a total number of chain linkages in the chain. For instance, for increasing the stroke length, the total number of chain linkages may be increased by adding one or more chain linkages to the chain; or for decreasing the stroke length, the total number of chain linkages may be reduced by removing one or more chain linkages to the chain.
[0030] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent components.BRIEF DESCRIPTION OF THE DRAWINGS
[0031] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0032] FIG. 1A illustrates an exemplary bottom view 100a of a proposed double acting reciprocating air compressor and water pump system 100, in accordance with an embodiment of the present disclosure.
[0033] FIG. IB illustrates an exemplary right hand side view 100b of the proposed double acting reciprocating air compressor and water pump system 100, in accordance with an embodiment of the present disclosure.
[0034] FIG. 1C illustrates an exemplary left hand side view 100c of the proposed double acting reciprocating air compressor and water pump system 100, in accordance with an embodiment of the present disclosure.
[0035] FIG. ID illustrates an exemplary top view lOOd of the proposed double acting reciprocating air compressor and water pump system 100, in accordance with an embodiment of the present disclosure.
[0036] FIG. IE illustrates an exemplary front view 100c of the proposed double acting reciprocating air compressor and water pump system 100 with a piston 3 at a mid-position in a double acting cylinder 1, in accordance with an embodiment of the present disclosure.
[0037] FIG. IF illustrates an exemplary front view lOOf of the proposed double acting reciprocating air compressor and water pump system 100 with the piston 3 in the double acting cylinder 1 performing a suction stroke on a front side of the piston 3 and a compression stroke on a back side of the piston 3, simultaneously, in accordance with an embodiment of the present disclosure.
[0038] FIG. 1G illustrates an exemplary front view 100g of the proposed double acting reciprocating air compressor and water pump system 100 with the piston 3 in the double acting cylinder 1 performing the compression stroke on the front side of the piston 3 and the suction stroke on the back side of the piston 3, simultaneously, in accordance with an embodiment of the present disclosure.DETAILED DESCRIPTION
[0039] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosures as defined by the appended claims.
[0040] For the purpose of understanding of the principles of the present disclosure, reference will now be made to the various embodiments and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the present disclosure is thereby intended, such alterations and further modifications in theillustrated system, and such further applications of the principles of the present disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the present disclosure relates.
[0041] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the present disclosure and are not intended to be restrictive thereof.
[0042] Whether or not a certain feature or element was limited to being used only once, it may still be referred to as “one or more features” or “one or more elements” or “at least one feature” or “at least one element.” Furthermore, the use of the terms “one or more” or “at least one” feature or element do not preclude there being none of that feature or element, unless otherwise specified by limiting language including, but not limited to, “there needs to be one or more” or “one or more elements is required.”
[0043] Reference is made herein to some “embodiments.” It should be understood that an embodiment is an example of a possible implementation of any features and / or elements of the present disclosure. Some embodiments have been described for the purpose of explaining one or more of the potential ways in which the specific features and / or elements of the proposed disclosure fulfil the requirements of uniqueness, utility, and non-obviousness.
[0044] Use of the phrases and / or terms including, but not limited to, “a first embodiment,” “a further embodiment,” “an alternate embodiment,” “one embodiment,” “an embodiment,” “multiple embodiments,” “some embodiments,” “other embodiments,” “further embodiment”, “furthermore embodiment,” “additional embodiment” or other variants thereof do not necessarily refer to the same embodiments. Unless otherwise specified, one or more particular features and / or elements described in connection with one or more embodiments may be found in one embodiment, or may be found in more than one embodiment, or may be found in all embodiments, or may be found in no embodiments. Although one or more features and / or elements may be described herein in the context of only a single embodiment, or in the context of more than one embodiment, or in the context of all embodiments, the features and / or elements may instead be provided separately or in any appropriate combination or not at all. Conversely, any features and / or elements described in the context of separate embodiments may alternatively be realized as existing together in the context of a single embodiment.
[0045] Any particular and all details set forth herein are used in the context of some embodiments and therefore should not necessarily be taken as limiting factors to the proposed disclosure.
[0046] The terms “comprise,” “comprising,” or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by “comprises... a” does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
[0047] The present disclosure in general, relates to the field of Aspects of the present disclosure generally relate to the field of mechanical engineering, and more particularly to the field of compression and pumping systems and equipments. Specifically, the present disclosure relates to a double acting, compact, crank-less reciprocating mechanism capable of both high-pressure air compression and water pumping, suitable for industrial and portable use.
[0048] As generally known, a double acting reciprocating type air compressor and water pump is the most efficient type of air compressor and water pump because such double acting reciprocating type systems can do two different actions at a same time but most of the air compressor and water pump available in market and in industries are single acting, means they work step by step.
[0049] At first they suck then they compress or pump once at a time. The double acting air compressor or water pump systems which are available in market are very large in size, very difficult to transport from one place to another, complex to build and maintain, rare availability of compressor and its parts, all of which increase its manufacturing cost and maintenance cost.
[0050] Therefore, the present disclosed proposes to make the double acting air compressor or water pump systems compact, simpler to manufacture and maintain, easily transportable and combining working of air compressing and water pumping in more effectively and efficiently way with high pressure as compare to air compressor and water pumps available in the market.
[0051] The proposed double acting air compressor or water pump system can operate without crank mechanism. To convert rotary motion into reciprocating motion for piston motion, there is no use of crank because to get required stroke, crank occupy more space and if there is a need to change a stroke size, according to that the crank itself needs to be changed or modified, which can be costly and unreliably.
[0052] Further, to convert and transfer rotary motion into reciprocating motion, in the market available conventional double acting air compressor or water pump, the crank generallyuses a very wide angle for the conversion of the rotary to reciprocating motion, which results in energy loss making the available double acting air compressor or water pump low energy efficient.
[0053] However, the proposed double acting air compressor or water pump system uses more effective and very efficient way to convert and transfer rotary motion into reciprocating motion more than crank mechanism, as there is no need to change whole mechanism. The proposed double acting air compressor or water pump systems occupy very small space, can be fit in compact space. To convert and transfer rotary motion into reciprocating motion, the proposed double acting air compressor or water pump systems use very small angle, which is almost a straight path, which effectively and more efficiently converts and transfers rotary motion into a reciprocating motion.
[0054] Embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings.
[0055] Now, referring to FIGs. 1A - ID exemplary bottom view 100, righthand side 100b, lefthand side 100c and top view lOOd of a proposed double acting reciprocating air compressor and water pump system 100 are illustrated, respectively, in accordance with an embodiment of the present disclosure.
[0056] Further, referring to FIG. IE, an exemplary front view lOOe of the proposed double acting reciprocating air compressor and water pump system 100 with a piston 3 at a midposition in a double acting cylinder 1 is illustrated, in accordance with an embodiment of the present disclosure. Furthermore, referring to FIGs. IF and 1G, exemplary front views lOOf and 100g of the proposed double acting reciprocating air compressor and water pump system 100 with the piston 3 in the double acting cylinder 1, performing a suction stroke on a front side of the piston 3 and a compression stroke on a back side of the piston 3 simultaneously, and performing the compression stroke on the front side of the piston 3 and the suction stroke on the back side of the piston 3, simultaneously, are illustrated respectively, in accordance with an embodiment of the present disclosure.
[0057] In an embodiment, the proposed double acting reciprocating air compressor and waterpump system 100 may include a double acting cylinder 1 fixed on cylinder stand 2, which may be fixed on one side of a panel plate 2a.
[0058] Further, on both ends of the double acting cylinder 1 head and cylinder 1 base, there may be a combination of two non-retum valves (NRVs) la - lb and 1c - Id.
[0059] In an embodiment, the NRVs la - 1c may be for intake and the NRVs lb - Id may be for outturn.
[0060] Furthermore, inside the double acting cylinder 1, there may be a piston 3 which may move in a reciprocating motion for suction and compression or pumping functions through the NRVs la - lb and 1c - Id.
[0061] In an embodiment, the piston 3 may be attached to an inner surface of the double acting cylinder 1 through a piston seal 3a around an upper surface of the piston 3.
[0062] Further, there may be a piston rod 3b, having one end attached to the one end of piston 3 inside the double acting cylinder 1 and other end of the piston rod 3b may be connected to one end of a connecting socket 3c while another end of the connecting socket 3c may be connected to one end through center of a connecting rod 3d and other end of connecting rod 3d through center may be connected to one end of a connecting pin 4a.
[0063] In an embodiment, at the center of both end of the connecting rod 3d, there may be bearings for free and adjustable movement.
[0064] Further, the other end of the connecting pin 4a may be attached horizontally on a vertical surface of a chain 4. The chain 4 may be running over two sprockets 4b and 4c.
[0065] In an embodiment, one side of the chain 4 may be connected to a fixed sprocket 4b and another side of the chain 4 may be connected to an adjustable sprocket 4c.
[0066] Further, the bottom side of the fixed sprocket 4b may be connected to an end of a rotor shaft 6a. The rotor shaft 6a may be coupled with an electric motor 6. The rotor shaft 6a may pass through a rotor bearing 6b which may be attached to one side of the panel plate 2a.
[0067] Furthermore, the electric motor 6 may be attached to the other side of panel plate 2a.
[0068] In the center of the adjustable sprocket 4c, there may be an adjustable sprocket bearing 4d. Further, a bottom side of the adjustable sprocket 4c may be connected to one end of a stroke tune pin 5b through center of adjustable sprocket bearing 4d and the other side of the stroke tune pin 5b may be connected to a top surface of a linear slider bearing block 5c.
[0069] Further, the linear slider bearing block 5c may be set on a linear guide rail 5d and the linear guide rail 5d may further be attached to another side of the panel plate 2a.
[0070] In an embodiment, over and parallel of linear guide rail 5d, there may be a stroke tune screw 5 attached to the one side of panel plate 2a by two stroke tune screw bearings 5a.
[0071] Further, one stroke tune screw bearing 5 a may be attached to the end of stroke tune screw 5 and another stroke tune screw bearing 5a may be attached onward of a head of the stroke tune screw 5. The stroke tune screw 5 may pass through a threaded hole which may be in the center of the stroke tune pin 5b.
[0072] In an embodiment of the present disclosure, a double acting reciprocating air compressor and water pump system 100 can include: a double-acting cylinder 1 comprising a first fluid chamber at a first end and a second fluid chamber at a second end; a piston 3 disposed within the double-acting cylinder 1; a piston rod 3b coupled to the piston 3; at least one intake non-retum valve (NRV) la and 1c and one discharge non-retum valve lb and Id disposed at each end of the double-acting cylinder 1 ; a chain mechanism comprising a chain 4 adapted to follow an obround path and coupled to a fixed sprocket 4b and an adjustable sprocket 4c; a rotary drive motor 6 comprising a rotor shaft 6a coupled with the fixed sprocket 4b enabled to rotate the fixed sprocket 4b; a connecting rod 3d comprising one end coupled to the chain 4 via a connecting pin 4a and another end coupled with a connecting socket 3c for operatively coupling with the piston rod 3b; and a stroke adjustment assembly comprising a stroke tune screw 5, a stroke tune pin 5b and a linear guide rail 5d.
[0073] In an embodiment, a rotary motion of the fixed sprocket 4b can drive the chain 4 resulting in a reciprocating motion of the piston 3 thereby enabling simultaneous suction stroke on one side and compression or pumping stroke on an opposite side of the piston 3.
[0074] In an embodiment, the stroke tune screw 5 can be enabled for a tool-free stroke length adjustment of a stroke length of the piston 3 without a crank along the linear guide rail 5d, such that a rotation of the stroke tune screw 5 moves the adjustable sprocket 4c for dynamically and proportionally tuning a chain tension in the chain 4 and the stroke length, precisely controlling piston displacement and air delivery.
[0075] In another embodiment, the connecting rod 3d can further include rotatable bearings to accommodate angular displacement during piston 3 motion.
[0076] In an embodiment, the piston 3 can be adapted to be fitted with a piston sealing ring 3a configured for dual-fluid operation of the simultaneous suction stroke and compression or pumping stroke of the piston 3.
[0077] In an embodiment, the piston 3 can be enabled to operate at a minimum stroke length of at least 50 mm.
[0078] In an embodiment, the connecting pin 4a can be enabled to travel substantially in a linear-dominant path rather than a radial path.
[0079] In an embodiment, the adjustable sprocket bearing 4d can be located coaxially with the stroke tune pin 5b to transmit axial translation from the stroke tune screw 5b directly to sprocket position of the adjustable sprocket bearing 4d.
[0080] In an embodiment, the rotary drive motor 6 can be an electric motor selected from a group comprising an electric AC, DC, brushless DC, servo, or permanent-magnet motor.
[0081] In an embodiment, the non-retum valves la - Id can be selected from a group of spring -loaded or reed-type valves.
[0082] In an embodiment, the chain 4 can be made of at least one or a combination of: an alloy steel, reinforced polymer, stainless steel, or carbon composite links.
[0083] In an embodiment, the double-acting cylinder 1 can be made from at least one or a combination of: cast iron, aluminium alloy, stainless steel, or ceramic -coated alloy.
[0084] In some embodiments, the stroke length may be adjusted, i.e., the stroke length may be varied by changing a total number of chain linkages in the chain 4. For example, for increasing the stroke length, the total number of chain linkages may be increased by adding one or more chain linkages to the chain 4; or for decreasing the stroke length, the total number of chain linkages may be reduced by removing one or more chain linkages to the chain 4.
[0085] In another embodiment of the present disclosure, the working of the proposed double acting reciprocating air compressor and water pump system 100 can begin when the electric motor 6 starts. The rotor shaft 6a starts rotating, and along with that, the fixed sprocket 4b can also start rotating.
[0086] Further, when the fixed sprocket 4b starts rotating, the adjustable sprocket 4c may also start rotating because the chain 4 is connected with both sprockets 4b and 4c.
[0087] Furthermore, the chain 4 may start moving over both sprocket on an obround path. With the moving chain 4, the connecting pin 4a may also start moving vertically in the obround path.
[0088] In an embodiment, then the connecting rod 3d whose one end is connected to the connecting pin 4a may start moving in the obround path and other end of connected rod 3d, which is connected with the connecting socket 3c, may start moving in a reciprocating motion because at the both end, in center of the connecting rod 3d, there may be a bearing for free and adjustable movement.
[0089] Further, one end of the connected rod 3d, connected with the connecting pin 4a, the connecting pin 4a may start pulling and pushing the connected rod 3d, and the other end of the connecting rod 3d, connected with the one end of the connecting socket 3c and other end of the connecting socket 3c may be connected with the one end of the piston rod 3b and the other end of the piston rod 3b may be connected with the piston 3 and the piston seal 3a may be around an upper surface of the piston 3.
[0090] So when the connecting pin 4a may start pulling and pushing the connecting rod 3d, then the connecting rod 3d may adjust in a required angle in a to and fro manner (i.e., left and right) by pulling and pushing the connecting socket 3c. Thus, the piston rod 3b may startmoving in the reciprocating motion and along with that the piston 3 and the piston seal 3a, inside the double acting cylinder 1 and connected with the piston rod 3b, may also start moving in the reciprocating motion with the piston rod 3b.
[0091] When the piston 3 may start reciprocating inside the double acting cylinder 1, so when the piston 3 may move backward then in front side of the piston 3 area is increased and pressure decreased as compared to an atmospheric pressure. So, due to this lower internal pressure in front area of the double acting cylinder 1, the air from outside automatically gets entered in the front area of the double acting cylinder 1 by pushing walls of the NRV la.
[0092] Further, at the same time, the back side of the piston 3 area gets decreased and pressure increases inside the back area of the double acting cylinder 1 as compare to the atmospheric pressure. So, due to this higher internal pressure in the back area of the double acting cylinder 1, the pressure pushes the air out from the double acting cylinder 1 or the piston 3 pushes air from inside towards outside from back area of the double acting cylinder 1 by pushing wall of the NRV Id.
[0093] In an embodiment, same as when the piston 3 may move forward then in front side of the piston 3, area gets decreased and pressure increases inside of the front area of the double acting cylinder 1 as compare to the atmospheric pressure. So, due to this higher internal pressure in the front area of the double acting cylinder 1, the pressure pushes the air out from the double acting cylinder 1 or the piston 3 pushes air from inside towards outside from front area of the double acting cylinder 1 by pushing wall of the NRV lb.
[0094] At the same time, the back side of piston 3, area gets increased and pressure decrease as compare to the atmospheric pressure. So, due to this lower internal pressure in the back area of the double acting cylinder 1, the air from outside automatically enters in the back area of the double acting cylinder 1 by pushing wall of the NRV 1c. The whole process as discussed above may continue simultaneously.
[0095] Further, to tight and loose the chain 4 and to increase or decrease the stroke size of the piston 3, there may be a stroke tune screw 5. By rotating the stroke tune screw 5 clock wise, the stroke tune pin 5b acts as a nut because of the inner thread, from which stroke tune screw 5 is passing through. Furthermore, by rotating the stroke tune screw 5 clock wise, the stroke tune pin 5b will start moving backwards with support of a linear slider bearing block 5c, which will slide back over the linear guide rail 5d.
[0096] Along with the stroke tune pin 5b, which is connected with the adjustable sprocket 4c through the center of the adjustable sprocket bearing 4d, may also move backwards bypushing the chain 4 and make the chain 4 tight or connected with the adjustable sprocket 4c or increase a stroke length of the piston 3.
[0097] By rotating the stroke tune screw 5 anti-clockwise, the stroke tune pin 5b will start moving forward with the support of the linear slider bearing block 5c, which will slide forward over the linear guide rail 5d.
[0098] Along with the stroke tune pin 5b, which is connected with the adjustable sprocket 4c through the center of adjustable sprocket bearing 4d, will also move forward by releasing the chain 4 and make the chain 4 loose, disconnected with the adjustable sprocket 4c or decrease stroke length of piston 3.
[0099] In an embodiment, the proposed double acting reciprocating air compressor and water pump system 100 may comprise the below advantages:
[0100] No crank: Eliminates bulky, energy-losing crank assembly; reduces space, cost, and moving part count.
[0101] Double acting: Provides dual-side suction / compression or pumping per piston cycle, doubling theoretical volumetric efficiency.
[0102] Adjustable stroke: Fine, tool-free adjustment by rotating a screw rather than changing parts.
[0103] Compact and lightweight: Optimized for portable and industrial deployment.
[0104] Lower energy loss: Nearly straight-path motion conversion, minimal angular inefficiency.
[0105] Universal design: Suitable for both air and water, using widely available materials.
[0106] Service friendly: Fewer custom parts, easier to maintain and transport.
[0107] In this application, unless specifically stated otherwise, the use of the singular includes the plural and the use of “or” means “and / or.” Furthermore, use of the terms “including” or “having” is not limiting. Any range described herein will be understood to include the endpoints and all values between the endpoints. Features of the disclosed embodiments may be combined, rearranged, omitted, etc., within the scope of the disclosure to produce additional embodiments. Furthermore, certain features may sometimes be used to advantage without a corresponding use of other features.
[0108] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The scope of the disclosure is determined by the claims that follow. The disclosure is not limited to the described embodiments, versions, or examples, which are included to enablea person having ordinary skill in the art to make and use the disclosure when combined with information and knowledge available to the person having ordinary skill in the art.ADVANTAGES OF THE PRESENT DISCLOSURE
[0109] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism for domestic and industrial purpose.
[0110] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism that eliminates the crank, enabling compact, efficient, and cost-effective construction[oni] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism for achieving simultaneous suction and compression (or pumping) action on both sides of the piston, improving volumetric efficiency.
[0112] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism for converting rotary motion to reciprocating motion using a compact chain-and-sprocket mechanism occupying minimal space and enabling easy stroke adjustment.
[0113] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism that enables an adjustable piston stroke without reconfiguration or complex part replacement, using a simple adjustment screw solution.
[0114] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism for high pressure applications, portable, mobile and industrial environments.
[0115] The present disclosure provides a double acting reciprocating air compressor and water pump mechanism that uses standard, easily available components for lower cost and easy maintenance.DESCRIPTION OF REFERENCE NUMERALS
[0116] Double Acting Cylinder 1
[0117] Non Return Valves (NRVs) la, lb, 1c, Id
[0118] Cylinder Stand 2
[0119] Panel Plate 2a
[0120] Piston 3
[0121] Piston Seal 3a
[0122] Piston Rod 3b
[0123] Connecting Socket 3c
[0124] Connecting Rod 3d
[0125] Chain 4
[0126] Connecting Pin 4a
[0127] Fix Sprocket 4b
[0128] Adjustable Sprocket 4c
[0129] Adjustable Sprocket’s Bearing 4d
[0130] Stroke tune Screw 5
[0131] Stroke tune Screw Bearings 5a
[0132] Stroke tune Pin 5b
[0133] Linear Slider Bearing Block 5c
[0134] Linear Guide Rail 5d
[0135] Electric Motor 6
[0136] Rotor Shaft 6a
[0137] Rotor Bearing 6b
Claims
aim:
1. A double acting reciprocating air compressor and water pump system (100), comprising:a double-acting cylinder (1) comprising a first fluid chamber at a first end and a second fluid chamber at a second end;a piston (3) disposed within the double-acting cylinder (1);a piston rod (3b) coupled to the piston (3);at least one intake non-retum valve (NRV) (la, 1c) and one discharge non-retum valve (lb, Id) disposed at each end of the double-acting cylinder (1);a chain mechanism comprising a chain (4) adapted to follow an obround path and coupled to a fixed sprocket (4b) and an adjustable sprocket (4c);a rotary drive motor (6) comprising a rotor shaft (6a) coupled with the fixed sprocket (4b) enabled to rotate the fixed sprocket (4b);a connecting rod (3d) comprising one end coupled to the chain (4) via a connecting pin (4a) and another end coupled with a connecting socket (3 c) for operatively coupling with the piston rod (3b); anda stroke adjustment assembly comprising a stroke tune screw (5), a stroke tune pin (5b) and a linear guide rail (5d); andwherein a rotary motion of the fixed sprocket (4b) drives the chain (4) resulting in a reciprocating motion of the piston (3) thereby enabling simultaneous suction stroke on one side and compression or pumping stroke on an opposite side of the piston (3).
2. The system (100) as claimed in claim 1, wherein the stroke tune screw (5) is enabled for a tool-free stroke length adjustment of a stroke length of the piston (3) without a crank along the linear guide rail (5d), such that a rotation of the stroke tune screw (5) moves the adjustable sprocket (4c) for dynamically and proportionally tuning a chain tension in the chain (4) and the stroke length, precisely controlling piston displacement and air delivery.
3. The system (100) as claimed in claim 1, wherein the connecting rod (3d) comprises rotatable bearings configured to accommodate angular displacement during piston (3) motion.
4. The system (100) as claimed in claim 1, wherein the piston (3) is adapted to be fitted with a piston sealing ring (3a) configured for dual-fluid operation of the simultaneous suction stroke and compression or pumping stroke of the piston (3).
5. The system (100) as claimed in claim 1, wherein the piston (3) is configured to operate at a minimum stroke length of at least 50 mm.
6. The system (100) as claimed in claim 1, wherein the connecting pin (4a) is enabled to travel substantially in a linear-dominant path rather than a radial path.
7. The system (100) as claimed in claim 1, wherein the adjustable sprocket bearing (4d) is located coaxially with the stroke tune pin (5b) to transmit axial translation from the stroke tune screw (5b) directly to sprocket position of the adjustable sprocket bearing (4d).
8. The system (100) as claimed in claim 1, wherein:the rotary drive motor (6) is an electric motor selected from a group comprising an electric AC, DC, brushless DC, servo, or permanent-magnet motor;the non-retum valves (la, lb, 1c, Id) are configured to be selected from a group of spring-loaded or reed-type valves; andthe chain (4) is made of at least one or a combination of: an alloy steel, reinforced polymer, stainless steel, or carbon composite links.
9. The system (100) as claimed in claim 1, wherein the double-acting cylinder (1) is made from at least one or a combination of: cast iron, aluminium alloy, stainless steel, or ceramic -coated alloy.