Axial Piston Pump Suction Channel Design
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Solution Overview
Problem
Axial piston pumps with inclined plates for high pressures experience significant fluctuations in flow rate and are not compact or efficient in fluid-dynamic terms, making them costly and complex to construct.
Innovation Solution
The axial piston pump design features a suction channel entirely within the head with a primary duct equidistant from all cylinders, ensuring uniform liquid distribution and reduced flow rate fluctuations, while maintaining a compact and efficient construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction channel is designed with a complex structure to improve fluid-dynamic efficiency, then the flow rate fluctuation is reduced, but the device complexity and manufacturing cost increase
Solution Approach 1:
The suction channel is merged into the head body as an integrated structure rather than a separate component. The primary duct and branch ducts are formed directly in the head material, eliminating the need for separate suction channel assemblies and reducing overall device complexity while maintaining fluid-dynamic efficiency
Solution Approach 2:
The head serves multiple functions: it houses the cylinders, contains the suction channel structure, and provides structural support for the entire pump assembly. This multi-functionality reduces the number of separate components needed and simplifies the overall device structure
2Volume of moving object
If the suction channel is made entirely in the head, then the axial compactness is improved and assembly is faster, but the manufacturing precision requirements increase
Solution Approach 1:
The suction channel is combined with the head as a single integrated component, eliminating the need for separate assembly steps and reducing the axial height of the pump. The primary duct and branch ducts are formed directly in the head material, ensuring precise positioning without requiring additional assembly operations
Solution Approach 2:
The suction channel structure is pre-formed as an integral part of the head during head manufacturing. The primary duct and branch ducts are created in their final positions within the head material before the cylinders and other components are assembled, eliminating the need for subsequent positioning and assembly operations
Data Source
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AI summary
The present invention concerns an axial piston pump (1, 1', 1",1‴) for the pumping of a liquid comprising: a head (20) in which there is at least partially made a plurality of cylinders (25) in a number greater than three, with central axes parallel between them, a plurality of pistons (75) each of which slide in a respective cylinder (25) of the plurality of cylinders (25) for the pumping of the liquid, and a suction channel of the liquid to pump, which is equipped with a primary duct (140) and a plurality of branch ducts (145, 145',145"), each of said branch ducts (145, 145',145") being adapted to place the primary duct (140) in fluid communication with a respective cylinder (25) of the plurality of cylinders (25), in which the primary duct (140) is positioned between the central axes of the cylinders (25).