Armahn Rotary Pump

Abstract

The present invention discloses a rotary positive displacement pump. The pump comprises a pump chamber, at least one rotor, and a drive shaft. The pump chamber comprises an inlet port and an outlet port. The pump chamber comprises a trochoidal inner periphery. The rotor rotatably is disposed within the pump chamber. The rotor is a substantially triangular rotor having at least three convex faces, an interior hollow cavity defined by a wall surface and a plurality of internal teeth defined within the cavity. The drive shaft is extending through the pump chamber and connected in driving relationship with the rotor. The rotor on rotation defines successive compression chambers having variable volume at the pump chamber. The rotation of the rotor pumps fluid through the pump chamber from the inlet port through the successive compression chambers to the outlet port and outputs a high-pressure fluid.

Description

TECHNICAL FIELD

[0001] The present invention generally relates to a rotary pump. More specifically, the present invention relates to a rotary positive displacement pump having a triangular rotor.BACKGROUND

[0002] Rotary positive displacement pumps are mechanical devices that transfer fluid through rotating components from a suction port of the pump to the discharge port during a revolution. The rotary positive displacement pumps ensure a consistent flow rate regardless of pressure changes. A single revolution displaces a fixed volume of liquid, regardless of its viscosity. The examples of rotary positive displacement pumps are internal gear pumps, external gear pumps, screw pump, and rotary vane pumps. The various types of rotary positive displacement pump are explained as follows.

[0003] The external gear pump comprises a suction port, a discharge port, gears, bearings, and a casing. The gears are housed within the casing, which contains two ports including one for suction and the other for discharge. Positioned parallel to each other with a shaft passing through their center axes, the gears feature teeth on their external surface, categorized as external gears. One gear function as the driving gear while the other serves as the idler gear, with the latter rotating only when the driving gear rotates. Common applications of external gear pumps include transferring fuels and lubrication in machine tools.

[0004] The fluid entering through the suction port while the rotating gears create increased volumetric space between their teeth. This negative suction pressure draws fluid into the cavities between the teeth, where it becomes trapped between the gears and casing as the gears continue rotating. Subsequently, as the gears approach the discharge port, the gap between the gears and casing increases, allowing the fluid to escape from the cavities.

[0005] The internal gear pumps function similarly to external gear pumps. But the external gear pumps have similar size of gears and internal gear pumps has different size of gears. The internal gear pumps have smaller inner gear called the rotor and the larger outer gear, the idler. And the internal gear pumps also comprise of crescent seal.

[0006] The screw pump, as the name implies, the form of the screw is similar to a screw thread and hence by rotating it, the fluid moves along the screw thread from the suction side to the discharge side of the pump. The screw pump often used for pumping heavy oil. Further, the screw pump is used in marine applications, for example, in ship propulsion and bilge pumping.

[0007] Rotary vane pump consists of spherical components mounted on a shaft that is off-center from the inner chamber. The pump comprises vanes that are typically located within the spherical component of the pump and play a crucial role in the pump's operation. When the space within the chamber increases, these vanes extend outward to fill the expanded space, trapping fluid between them as they rotate towards the discharge port. This movement of the vanes helps to create pockets or chambers within the pump, allowing it to effectively capture and move the fluid through the system.

[0008] However, the existing pumps such as internal gear, external gear, screw, or vane pump, possess unique design and limitations. Some rotary pumps usually work at moderate speeds and have medium pressure restrictions. Some rotary pumps work at high speeds and have no medium-pressure restrictions. Further, a few rotary pumps cannot handle the abrasives and have complex housing structure. Thus, the selection of the most suitable pump requires a thorough understanding of the specific application requirements and operating conditions of each pump, which can be time-consuming and complex.

[0009] Therefore, there exists a need to provide continued improvements and alternative designs to improve a rotary positive displacement pump which could be used in various application.SUMMARY

[0010] The present invention discloses rotary positive displacement pump. The pump comprises a pump chamber, at least one rotor, and a drive shaft. The pump chamber having an inlet port and an outlet port. The inlet port is defined at a sidewall of the pump chamber. The outlet port is defined at a sidewall of the pump chamber. The pump chamber comprises a trochoidal inner periphery.

[0011] The rotor rotatably is disposed within the pump chamber. The rotor is a substantially triangular rotor having at least three convex faces, an interior hollow cavity defined by a wall surface and a plurality of internal teeth defined within the cavity. The inlet port and the outlet port are opened and closed by the convex face of the rotor according to the rotation thereof.

[0012] The drive shaft is extending through the pump chamber and connected in driving relationship with the rotor. The drive shaft comprises a pinion to engage with internal teeth of the rotor. The drive shaft is disposed eccentric with respect to the rotor. The rotor on rotation defines successive compression chambers having variable volume at the pump chamber. The rotation of the rotor pumps fluid through the pump chamber from the inlet port through the successive compression chambers to the outlet port and outputs a high-pressure fluid. The drive shaft is connected to a power source.

[0013] The above summary contains simplifications, generalizations and omissions of detail and is not intended as a comprehensive description of the claimed subject matter but, rather, is intended to provide a brief overview of some of the functionality associated therewith. Other systems, methods, functionality, features and advantages of the claimed subject matter will be or will become apparent to one with skill in the art upon examination of the following figures and detailed written description.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The description of the illustrative embodiments can be read in conjunction with the accompanying figures. It will be appreciated that for simplicity and clarity of illustration, elements illustrated in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements are exaggerated relative to other elements. Embodiments incorporating teachings of the present disclosure are shown and described with respect to the figures presented herein, in which:

[0015] FIG. 1 exemplarily illustrates a cross-sectional view of a rotary positive displacement pump, according to an embodiment of the present invention.

[0016] FIG. 2 exemplarily illustrates a cross sectional view of the pump chamber having the triangular rotor, according to an embodiment of the present invention.

[0017] FIG. 3 exemplarily illustrates a perspective view of a pump casing of the rotary positive displacement pump, according to an embodiment of the present invention.

[0018] FIG. 4 exemplarily illustrates a compression mechanism of the rotary positive displacement pump, according to an embodiment of the present invention.DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0019] A description of embodiments of the present invention will now be given with reference to the Figures. It is expected that the present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive.

[0020] FIG. 1 illustrates a cross-sectional view of a rotary positive displacement pump 100, according to an embodiment of the present invention. The pump comprises a pump chamber 104, at least one rotor 106, and a drive shaft 108. The pump chamber 104 is disposed within the pump casing 102. The pump chamber 104 having a trochoidal inner periphery 105 and a rotor 106 rotatably mounted within the pump chamber 104. The pump chamber 104 comprises an inlet port 110 and an outlet port 112. The inlet port 110 is defined at a sidewall of the pump chamber 104. The outlet port 112 is defined at a sidewall of the pump chamber 104. The inlet port 110 is configured to receive the fluid. The drive shaft 108 is connected to the rotor 106 through the pump chamber 104. The drive shaft 108 is connected to a power source. The power source includes, but not limited to combustion engine and motor.

[0021] FIG. 2 exemplarily illustrates a cross sectional view of the pump chamber 104 having the triangular rotor, according to an embodiment of the present invention. The rotor 106 is a substantially triangular rotor having at least three convex faces, an interior hollow cavity 114 defined by a wall surface and a plurality of internal teeth 116 defined within the cavity 114. The rotor 106 has three convex faces. The three convex faces comprise a first convex face 118, a second convex face 120, and a third convex face 122 (shown in FIG. 4). The three convex faces of rotor 106 maintain contact with the trochoidal inner periphery 105 of the pump chamber 104 as the rotor 106 rotates. The inlet port 110 and the outlet port 112 are opened and closed by the convex face of the rotor 106 as the rotor 106 rotates. The drive shaft 108 is extending through the pump chamber 104 and connected in driving relationship with the rotor 106. The drive shaft 108 comprises a pinion 124 to engage with internal teeth 116 of the rotor 106. The drive shaft 108 is disposed eccentric with respect to the rotor 106. The rotor 106 rotates in the direction of the drive shaft 108. The rotor 106 on rotation defines successive compression chambers having variable volume at the pump chamber 104. The rotation of the rotor 106 pumps fluid through the pump chamber 104 from the inlet through the successive compression chambers to the outlet and outputs a high-pressure fluid.

[0022] FIG. 3 exemplarily illustrates a perspective view of pump casing 102 of the rotary positive displacement pump, according to an embodiment of the present invention. The pump casing 102 serves as a protective shield. The pump casing 102 ensures the inner mechanisms of the pump remain isolated from the external environment. Further, the pump casing 102 barrier ensures that there is no leakage and maintains the pressure inside the pump chamber 104. The pump casing 102 surrounds the pump chamber 104.

[0023] FIG. 4 exemplarily illustrates a compression mechanism of the rotary positive displacement pump, according to an embodiment of the present invention. The fluid flows through the pump chamber 104 as the rotor 106 rotates, driven by the drive shaft 108 connected to a power source. The rotation of the rotor 106 determines the direction of the driving shaft 108 and pumps the fluid from the inlet port 110 through successive compression chambers. The successive compression chambers comprise a first compression chamber 126 or an intake chamber, a second compression chamber 128, a third compression chamber 130, and a fourth compression chamber 132. The inlet port 110 is in fluid communication with the first compression chamber 126 and the outlet port 112 is in fluid communication with the fourth compression chamber 132. The fluid flows into the first compression chamber 126 as the first convex face 118 of the rotor 106 aligns with the inlet port 110, allowing the fluid to enter into the pump chamber 104.

[0024] As the rotor 106 rotates and the second convex face 120 obstructs the inlet port 110, the fluid becomes confined within the first compression chamber 126 before moving into the second compression chamber 128. Here, the fluid experiences compression due to the reduced chamber volume. Further, as the fluid advances to the third compression chamber 130, the fluid progress into a highly compressed state. Within this chamber, the fluid undergoes further compression, resulting in elevated pressure that impels the rotor 106 forward, facilitating the production of high-pressure fluid. The process continues until the first convex face 118 of the rotor 106 aligns with the outlet port 112, enabling the release of highly compressed fluid from the fourth compression chamber 132 through the outlet port 112. Meanwhile, the decreasing chamber volume propels the remaining fluid out of the port. The cycle of fluid pumping within the pump resumes as the second convex face 120 encounters the outlet port 112, while the first convex face 118 repositions itself by the inlet port 110. Pump 100 can be operated bidirectionally, allowing for flexibility in design and operation. By switching the inlet port 110 and outlet port 112 connections, or in case of an electric motor driven pump 100, by changing motor's polarity, pump 100 can be used to transfer fluids in either direction, depending on the requirements of the process or system. This versatility in pump 100 operation adds flexibility and efficiency to various applications, enabling them to adapt to changing demands and conditions.

[0025] Advantageously, the pump 100 could be used in various applications, such as pumping water from wells and pumps in aquarium and pond filtration systems. The pump 100 aids in water cooling and fuel injection within the automotive sector. In the energy industries, the present invention could be crucial for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation, and air conditioning system. In medical industry, the pump 100 could be used in biochemical processes in medicine production and as artificial substitutes for body parts like the heart and penile prosthesis. The pump 100 is well-suited for application in the field of biological sciences, drawing inspiration from the diverse chemical and biomechanical pumps found in biology field. The pump 100 could be used in other industries, but not limited to, Aerospace—rocket fuel pumps, turbo shaft engines, turbo charged engines, aeronautical engines, marine engines, refrigeration pumps, and in any industry that basically uses pumps.

[0026] While the disclosure has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the disclosure. In addition, many modifications may be made to adapt a particular system, device, or component thereof to the teachings of the disclosure without departing from the essential scope thereof. Therefore, it is intended that the disclosure not be limited to the particular embodiments disclosed for carrying out this disclosure, but that the disclosure will include all embodiments falling within the scope of the appended claims. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. 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 “comprises” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0028] The description of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope of the disclosure. The described embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

[0029] The components of the rotary positive displacement pump 100 can be fabricated from metallic or non-metallic materials, depending on the operational temperature, pressure, mechanical shock, vibration levels, workload requirements, and environmental conditions in which the pump 100 is utilized.

[0030] Metallic Materials: Components of pump 100, the rotor 106, pump chamber 104, pump casing 102 and drive shaft 108 may be constructed from stainless steel, titanium alloys, aluminum, or high-strength tool steels to withstand high pressure, extreme temperatures, and dynamic loads.

[0031] Non-Metallic Materials: In applications requiring lightweight, corrosion-resistant, or electrically non-conductive properties, components may be fabricated from ceramics, reinforced composites, high-performance thermoplastics (e.g., PEEK, PTFE), or carbon fiber materials.

[0032] Hybrid Construction: Certain components may employ a combination of metallic and non-metallic materials, such as a metal core coated with a wear-resistant polymer or ceramic, to optimize durability, weight, and performance.

[0033] Environmental Adaptation: Material selection may also consider exposure to corrosive fluids, abrasive particulates, cryogenic or high-temperature environments, and vacuum conditions to ensure long-term reliability and efficiency.

[0034] This flexibility in material selection allows the pump 100 to be tailored to specific industrial applications, optimizing performance under a wide range of operating conditions.

[0035] The pump 100 described herein can be implemented in various alternative embodiments to accommodate different operational requirements, working environments, and industry applications. The following design variations illustrate potential modifications while maintaining the core functionality of the pump 100.Rotor 106 Geometry Variations

[0036] While the preferred embodiment utilizes a triangular rotor 106, alternative designs may incorporate Four-lobed (square-like) rotors to enhance fluid compression efficiency. Pentagonal or hexagonal rotors for applications requiring smoother flow profiles with reduced pulsations. Asymmetrical rotors optimized for variable flow rates in multi-phase pumping systems.Multi-Stage Configurations

[0037] The pump 100 can be modified into a multi-stage system, where multiple rotary compression chambers 104 are arranged in series or parallel to Achieve higher pressure ratios for high-compression applications. Enable progressive fluid pressurization, reducing mechanical stress on individual stages. Support variable-speed operation, where different stages operate under separate speed and pressure conditions.Adaptive Sealing Mechanisms

[0038] Depending on the operating pressure, fluid type, and thermal conditions, sealing configurations may vary. Elastomeric or polymer seals for low-pressure, chemical-resistant applications. Precision-machined metal-to-metal contact seals for high-temperature or high-pressure systems. Self-adjusting dynamic seals that adapt to pressure changes in real-time, improving durability and minimizing leakage.Drive Mechanism Variations

[0039] The pump 100 can be powered by different drive mechanisms, including but not limited to:

[0040] Electric motor drive for industrial and automotive applications.

[0041] Hydraulic or pneumatic drive for environments where electrical components are not feasible (e.g., explosive or underwater conditions).

[0042] Magnetically coupled drive for hermetic sealing in chemical or medical applications, eliminating mechanical shaft seals.Integration with but not Limited to Smart Control Systems and AI

[0043] Advanced versions of the pump 100 may incorporate electronic monitoring, AI and automation. Embedded sensors for real-time monitoring of temperature, pressure, and flow rates. Adaptive control algorithms to adjust pump 100 speed based on fluid demand and system feedback. IoT-enabled diagnostics, Internet of Things allowing remote performance tracking and predictive maintenance.Tolerances for Optimal Performance

[0044] The pump 100 is designed to operate efficiently across various fluid viscosities, pressure conditions, and environmental factors. The tolerances for critical components, such as rotor-to-housing clearance, sealing interfaces, and drive shaft positioning, may be adjusted based on different parameters.Fluid Characteristics

[0045] Tolerances may vary to accommodate low-viscosity fluids (e.g., water, refrigerants) or high-viscosity fluids (e.g., heavy oils, slurries, polymers) to ensure optimal sealing and efficiency.Operating Conditions

[0046] Pump 100 may incorporate adaptive clearances that allow for thermal expansion, high-speed operation, and mechanical stress factors without compromising function.Sealing & Leakage Prevention

[0047] Clearances are designed to minimize internal leakage while allowing for smooth operation, with tolerances selected to balance mechanical durability and sealing performance.Material & Environmental Considerations

[0048] Corrosion-resistant coatings, flexible sealing mechanisms, and wear-resistant materials may influence final design tolerances, depending on the working fluid, temperature range, and pressure differentials.

Examples

Embodiment Construction

[0019]A description of embodiments of the present invention will now be given with reference to the Figures. It is expected that the present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive.

[0020]FIG. 1 illustrates a cross-sectional view of a rotary positive displacement pump 100, according to an embodiment of the present invention. The pump comprises a pump chamber 104, at least one rotor 106, and a drive shaft 108. The pump chamber 104 is disposed within the pump casing 102. The pump chamber 104 having a trochoidal inner periphery 105 and a rotor 106 rotatably mounted within the pump chamber 104. The pump chamber 104 comprises an inlet port 110 and an outlet port 112. The inlet port 110 is defined at a sidewall of the pump chamber 104. The outlet port 112 is defined at a sidewall of the pump chamber 104. The inlet ...

TECHNICAL FIELD

[0001] The present invention generally relates to a rotary pump. More specifically, the present invention relates to a rotary positive displacement pump having a triangular rotor.BACKGROUND

[0002] Rotary positive displacement pumps are mechanical devices that transfer fluid through rotating components from a suction port of the pump to the discharge port during a revolution. The rotary positive displacement pumps ensure a consistent flow rate regardless of pressure changes. A single revolution displaces a fixed volume of liquid, regardless of its viscosity. The examples of rotary positive displacement pumps are internal gear pumps, external gear pumps, screw pump, and rotary vane pumps. The various types of rotary positive displacement pump are explained as follows.

[0003] The external gear pump comprises a suction port, a discharge port, gears, bearings, and a casing. The gears are housed within the casing, which contains two ports including one for suction and the other for discharge. Positioned parallel to each other with a shaft passing through their center axes, the gears feature teeth on their external surface, categorized as external gears. One gear function as the driving gear while the other serves as the idler gear, with the latter rotating only when the driving gear rotates. Common applications of external gear pumps include transferring fuels and lubrication in machine tools.

[0004] The fluid entering through the suction port while the rotating gears create increased volumetric space between their teeth. This negative suction pressure draws fluid into the cavities between the teeth, where it becomes trapped between the gears and casing as the gears continue rotating. Subsequently, as the gears approach the discharge port, the gap between the gears and casing increases, allowing the fluid to escape from the cavities.

[0005] The internal gear pumps function similarly to external gear pumps. But the external gear pumps have similar size of gears and internal gear pumps has different size of gears. The internal gear pumps have smaller inner gear called the rotor and the larger outer gear, the idler. And the internal gear pumps also comprise of crescent seal.

[0006] The screw pump, as the name implies, the form of the screw is similar to a screw thread and hence by rotating it, the fluid moves along the screw thread from the suction side to the discharge side of the pump. The screw pump often used for pumping heavy oil. Further, the screw pump is used in marine applications, for example, in ship propulsion and bilge pumping.

[0007] Rotary vane pump consists of spherical components mounted on a shaft that is off-center from the inner chamber. The pump comprises vanes that are typically located within the spherical component of the pump and play a crucial role in the pump's operation. When the space within the chamber increases, these vanes extend outward to fill the expanded space, trapping fluid between them as they rotate towards the discharge port. This movement of the vanes helps to create pockets or chambers within the pump, allowing it to effectively capture and move the fluid through the system.

[0008] However, the existing pumps such as internal gear, external gear, screw, or vane pump, possess unique design and limitations. Some rotary pumps usually work at moderate speeds and have medium pressure restrictions. Some rotary pumps work at high speeds and have no medium-pressure restrictions. Further, a few rotary pumps cannot handle the abrasives and have complex housing structure. Thus, the selection of the most suitable pump requires a thorough understanding of the specific application requirements and operating conditions of each pump, which can be time-consuming and complex.

[0009] Therefore, there exists a need to provide continued improvements and alternative designs to improve a rotary positive displacement pump which could be used in various application.SUMMARY

[0010] The present invention discloses rotary positive displacement pump. The pump comprises a pump chamber, at least one rotor, and a drive shaft. The pump chamber having an inlet port and an outlet port. The inlet port is defined at a sidewall of the pump chamber. The outlet port is defined at a sidewall of the pump chamber. The pump chamber comprises a trochoidal inner periphery.

[0011] The rotor rotatably is disposed within the pump chamber. The rotor is a substantially triangular rotor having at least three convex faces, an interior hollow cavity defined by a wall surface and a plurality of internal teeth defined within the cavity. The inlet port and the outlet port are opened and closed by the convex face of the rotor according to the rotation thereof.

[0012] The drive shaft is extending through the pump chamber and connected in driving relationship with the rotor. The drive shaft comprises a pinion to engage with internal teeth of the rotor. The drive shaft is disposed eccentric with respect to the rotor. The rotor on rotation defines successive compression chambers having variable volume at the pump chamber. The rotation of the rotor pumps fluid through the pump chamber from the inlet port through the successive compression chambers to the outlet port and outputs a high-pressure fluid. The drive shaft is connected to a power source.

[0013] The above summary contains simplifications, generalizations and omissions of detail and is not intended as a comprehensive description of the claimed subject matter but, rather, is intended to provide a brief overview of some of the functionality associated therewith. Other systems, methods, functionality, features and advantages of the claimed subject matter will be or will become apparent to one with skill in the art upon examination of the following figures and detailed written description.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The description of the illustrative embodiments can be read in conjunction with the accompanying figures. It will be appreciated that for simplicity and clarity of illustration, elements illustrated in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements are exaggerated relative to other elements. Embodiments incorporating teachings of the present disclosure are shown and described with respect to the figures presented herein, in which:

[0015] FIG. 1 exemplarily illustrates a cross-sectional view of a rotary positive displacement pump, according to an embodiment of the present invention.

[0016] FIG. 2 exemplarily illustrates a cross sectional view of the pump chamber having the triangular rotor, according to an embodiment of the present invention.

[0017] FIG. 3 exemplarily illustrates a perspective view of a pump casing of the rotary positive displacement pump, according to an embodiment of the present invention.

[0018] FIG. 4 exemplarily illustrates a compression mechanism of the rotary positive displacement pump, according to an embodiment of the present invention.DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0019] A description of embodiments of the present invention will now be given with reference to the Figures. It is expected that the present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive.

[0020] FIG. 1 illustrates a cross-sectional view of a rotary positive displacement pump 100, according to an embodiment of the present invention. The pump comprises a pump chamber 104, at least one rotor 106, and a drive shaft 108. The pump chamber 104 is disposed within the pump casing 102. The pump chamber 104 having a trochoidal inner periphery 105 and a rotor 106 rotatably mounted within the pump chamber 104. The pump chamber 104 comprises an inlet port 110 and an outlet port 112. The inlet port 110 is defined at a sidewall of the pump chamber 104. The outlet port 112 is defined at a sidewall of the pump chamber 104. The inlet port 110 is configured to receive the fluid. The drive shaft 108 is connected to the rotor 106 through the pump chamber 104. The drive shaft 108 is connected to a power source. The power source includes, but not limited to combustion engine and motor.

[0021] FIG. 2 exemplarily illustrates a cross sectional view of the pump chamber 104 having the triangular rotor, according to an embodiment of the present invention. The rotor 106 is a substantially triangular rotor having at least three convex faces, an interior hollow cavity 114 defined by a wall surface and a plurality of internal teeth 116 defined within the cavity 114. The rotor 106 has three convex faces. The three convex faces comprise a first convex face 118, a second convex face 120, and a third convex face 122 (shown in FIG. 4). The three convex faces of rotor 106 maintain contact with the trochoidal inner periphery 105 of the pump chamber 104 as the rotor 106 rotates. The inlet port 110 and the outlet port 112 are opened and closed by the convex face of the rotor 106 as the rotor 106 rotates. The drive shaft 108 is extending through the pump chamber 104 and connected in driving relationship with the rotor 106. The drive shaft 108 comprises a pinion 124 to engage with internal teeth 116 of the rotor 106. The drive shaft 108 is disposed eccentric with respect to the rotor 106. The rotor 106 rotates in the direction of the drive shaft 108. The rotor 106 on rotation defines successive compression chambers having variable volume at the pump chamber 104. The rotation of the rotor 106 pumps fluid through the pump chamber 104 from the inlet through the successive compression chambers to the outlet and outputs a high-pressure fluid.

[0022] FIG. 3 exemplarily illustrates a perspective view of pump casing 102 of the rotary positive displacement pump, according to an embodiment of the present invention. The pump casing 102 serves as a protective shield. The pump casing 102 ensures the inner mechanisms of the pump remain isolated from the external environment. Further, the pump casing 102 barrier ensures that there is no leakage and maintains the pressure inside the pump chamber 104. The pump casing 102 surrounds the pump chamber 104.

[0023] FIG. 4 exemplarily illustrates a compression mechanism of the rotary positive displacement pump, according to an embodiment of the present invention. The fluid flows through the pump chamber 104 as the rotor 106 rotates, driven by the drive shaft 108 connected to a power source. The rotation of the rotor 106 determines the direction of the driving shaft 108 and pumps the fluid from the inlet port 110 through successive compression chambers. The successive compression chambers comprise a first compression chamber 126 or an intake chamber, a second compression chamber 128, a third compression chamber 130, and a fourth compression chamber 132. The inlet port 110 is in fluid communication with the first compression chamber 126 and the outlet port 112 is in fluid communication with the fourth compression chamber 132. The fluid flows into the first compression chamber 126 as the first convex face 118 of the rotor 106 aligns with the inlet port 110, allowing the fluid to enter into the pump chamber 104.

[0024] As the rotor 106 rotates and the second convex face 120 obstructs the inlet port 110, the fluid becomes confined within the first compression chamber 126 before moving into the second compression chamber 128. Here, the fluid experiences compression due to the reduced chamber volume. Further, as the fluid advances to the third compression chamber 130, the fluid progress into a highly compressed state. Within this chamber, the fluid undergoes further compression, resulting in elevated pressure that impels the rotor 106 forward, facilitating the production of high-pressure fluid. The process continues until the first convex face 118 of the rotor 106 aligns with the outlet port 112, enabling the release of highly compressed fluid from the fourth compression chamber 132 through the outlet port 112. Meanwhile, the decreasing chamber volume propels the remaining fluid out of the port. The cycle of fluid pumping within the pump resumes as the second convex face 120 encounters the outlet port 112, while the first convex face 118 repositions itself by the inlet port 110. Pump 100 can be operated bidirectionally, allowing for flexibility in design and operation. By switching the inlet port 110 and outlet port 112 connections, or in case of an electric motor driven pump 100, by changing motor's polarity, pump 100 can be used to transfer fluids in either direction, depending on the requirements of the process or system. This versatility in pump 100 operation adds flexibility and efficiency to various applications, enabling them to adapt to changing demands and conditions.

[0025] Advantageously, the pump 100 could be used in various applications, such as pumping water from wells and pumps in aquarium and pond filtration systems. The pump 100 aids in water cooling and fuel injection within the automotive sector. In the energy industries, the present invention could be crucial for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation, and air conditioning system. In medical industry, the pump 100 could be used in biochemical processes in medicine production and as artificial substitutes for body parts like the heart and penile prosthesis. The pump 100 is well-suited for application in the field of biological sciences, drawing inspiration from the diverse chemical and biomechanical pumps found in biology field. The pump 100 could be used in other industries, but not limited to, Aerospace—rocket fuel pumps, turbo shaft engines, turbo charged engines, aeronautical engines, marine engines, refrigeration pumps, and in any industry that basically uses pumps.

[0026] While the disclosure has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the disclosure. In addition, many modifications may be made to adapt a particular system, device, or component thereof to the teachings of the disclosure without departing from the essential scope thereof. Therefore, it is intended that the disclosure not be limited to the particular embodiments disclosed for carrying out this disclosure, but that the disclosure will include all embodiments falling within the scope of the appended claims. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. 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 “comprises” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0028] The description of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope of the disclosure. The described embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

[0029] The components of the rotary positive displacement pump 100 can be fabricated from metallic or non-metallic materials, depending on the operational temperature, pressure, mechanical shock, vibration levels, workload requirements, and environmental conditions in which the pump 100 is utilized.

[0030] Metallic Materials: Components of pump 100, the rotor 106, pump chamber 104, pump casing 102 and drive shaft 108 may be constructed from stainless steel, titanium alloys, aluminum, or high-strength tool steels to withstand high pressure, extreme temperatures, and dynamic loads.

[0031] Non-Metallic Materials: In applications requiring lightweight, corrosion-resistant, or electrically non-conductive properties, components may be fabricated from ceramics, reinforced composites, high-performance thermoplastics (e.g., PEEK, PTFE), or carbon fiber materials.

[0032] Hybrid Construction: Certain components may employ a combination of metallic and non-metallic materials, such as a metal core coated with a wear-resistant polymer or ceramic, to optimize durability, weight, and performance.

[0033] Environmental Adaptation: Material selection may also consider exposure to corrosive fluids, abrasive particulates, cryogenic or high-temperature environments, and vacuum conditions to ensure long-term reliability and efficiency.

[0034] This flexibility in material selection allows the pump 100 to be tailored to specific industrial applications, optimizing performance under a wide range of operating conditions.

[0035] The pump 100 described herein can be implemented in various alternative embodiments to accommodate different operational requirements, working environments, and industry applications. The following design variations illustrate potential modifications while maintaining the core functionality of the pump 100.Rotor 106 Geometry Variations

[0036] While the preferred embodiment utilizes a triangular rotor 106, alternative designs may incorporate Four-lobed (square-like) rotors to enhance fluid compression efficiency. Pentagonal or hexagonal rotors for applications requiring smoother flow profiles with reduced pulsations. Asymmetrical rotors optimized for variable flow rates in multi-phase pumping systems.Multi-Stage Configurations

[0037] The pump 100 can be modified into a multi-stage system, where multiple rotary compression chambers 104 are arranged in series or parallel to Achieve higher pressure ratios for high-compression applications. Enable progressive fluid pressurization, reducing mechanical stress on individual stages. Support variable-speed operation, where different stages operate under separate speed and pressure conditions.Adaptive Sealing Mechanisms

[0038] Depending on the operating pressure, fluid type, and thermal conditions, sealing configurations may vary. Elastomeric or polymer seals for low-pressure, chemical-resistant applications. Precision-machined metal-to-metal contact seals for high-temperature or high-pressure systems. Self-adjusting dynamic seals that adapt to pressure changes in real-time, improving durability and minimizing leakage.Drive Mechanism Variations

[0039] The pump 100 can be powered by different drive mechanisms, including but not limited to:

[0040] Electric motor drive for industrial and automotive applications.

[0041] Hydraulic or pneumatic drive for environments where electrical components are not feasible (e.g., explosive or underwater conditions).

[0042] Magnetically coupled drive for hermetic sealing in chemical or medical applications, eliminating mechanical shaft seals.Integration with but not Limited to Smart Control Systems and AI

[0043] Advanced versions of the pump 100 may incorporate electronic monitoring, AI and automation. Embedded sensors for real-time monitoring of temperature, pressure, and flow rates. Adaptive control algorithms to adjust pump 100 speed based on fluid demand and system feedback. IoT-enabled diagnostics, Internet of Things allowing remote performance tracking and predictive maintenance.Tolerances for Optimal Performance

[0044] The pump 100 is designed to operate efficiently across various fluid viscosities, pressure conditions, and environmental factors. The tolerances for critical components, such as rotor-to-housing clearance, sealing interfaces, and drive shaft positioning, may be adjusted based on different parameters.Fluid Characteristics

[0045] Tolerances may vary to accommodate low-viscosity fluids (e.g., water, refrigerants) or high-viscosity fluids (e.g., heavy oils, slurries, polymers) to ensure optimal sealing and efficiency.Operating Conditions

[0046] Pump 100 may incorporate adaptive clearances that allow for thermal expansion, high-speed operation, and mechanical stress factors without compromising function.Sealing & Leakage Prevention

[0047] Clearances are designed to minimize internal leakage while allowing for smooth operation, with tolerances selected to balance mechanical durability and sealing performance.Material & Environmental Considerations

[0048] Corrosion-resistant coatings, flexible sealing mechanisms, and wear-resistant materials may influence final design tolerances, depending on the working fluid, temperature range, and pressure differentials.

Examples

Embodiment Construction

[0019]A description of embodiments of the present invention will now be given with reference to the Figures. It is expected that the present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive.

[0020]FIG. 1 illustrates a cross-sectional view of a rotary positive displacement pump 100, according to an embodiment of the present invention. The pump comprises a pump chamber 104, at least one rotor 106, and a drive shaft 108. The pump chamber 104 is disposed within the pump casing 102. The pump chamber 104 having a trochoidal inner periphery 105 and a rotor 106 rotatably mounted within the pump chamber 104. The pump chamber 104 comprises an inlet port 110 and an outlet port 112. The inlet port 110 is defined at a sidewall of the pump chamber 104. The outlet port 112 is defined at a sidewall of the pump chamber 104. The inlet ...

Claims

1. A rotary positive displacement pump, comprising:a pump chamber having an inlet port and an outlet port, wherein the pump chamber comprises a trochoidal inner periphery;at least one rotor rotatably disposed within the pump chamber, wherein the rotor is a substantially triangular rotor having at least three convex faces to define successive compression chambers during rotation, wherein each face maintains continuous contact with the inner periphery, an interior hollow cavity defined by a wall surface and a plurality of internal teeth defined within the cavity, anda drive shaft extending through the pump chamber and connected in driving relationship with the rotor, the drive shaft comprises a pinion to engage with internal teeth of the rotor, the drive shaft is disposed eccentric with respect to the rotor, wherein the rotor on rotation defines successive compression chambers having variable volume at the pump chamber, wherein the rotation of the rotor pumps fluid through the pump chamber from the inlet port through the successive compression chambers to the outlet port and outputs a high-pressure fluid.

2. The pump of claim 1, wherein the inlet port is defined at a sidewall of the pump chamber.

3. The pump of claim 1, wherein the outlet port is defined at the sidewall of the pump chamber.

4. The pump of claim 1, wherein the drive shaft is connected to a power source.

5. The pump of claim 4, wherein the power source is an electrical motor.

6. The pump of claim 4, wherein the power source is a combustion engine.

7. The pump of claim 1, wherein the compression chambers are integrally formed within the pump chamber.

8. The pump of claim 1, wherein the inlet port and the outlet port are opened and closed by the convex face of the rotor according to the rotation thereof.

9. The pump of claim 1, wherein the rotor rotates in bi-directional or on reverse direction with respect to the drive shaft.

10. The pump of claim 1, wherein the rotor on rotation defines an intake chamber and creates suction in the intake chamber to receive the fluid through the inlet port.

11. The pump of claim 10, wherein the rotation of the rotor defines at least four compression chambers.

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