Axial Piston Pump Suction Channel Segmentation
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Solution Overview
Problem
Axial piston pumps with inclined plates experience significant fluctuations in flow rate, particularly at high pressures, and require a design that balances compactness and efficiency while maintaining affordability.
Innovation Solution
The axial piston pump design incorporates multiple cylinders with central parallel axes, independent suction and delivery channels, and strategically aligned housing seats for valves, optimizing channel orientations to reduce flow rate fluctuations and enhance compactness, allowing for improved axial and radial compactness without large compartments for maintenance access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If axial piston pumps with inclined plates are designed with simple suction channel construction, then device complexity is reduced, but delivery flow rate fluctuation increases significantly
Solution Approach 1:
The suction channel is divided into a primary duct and multiple branch ducts, with each branch duct connected to a specific cylinder. This segmentation allows independent flow control to each cylinder, reducing flow rate fluctuations while maintaining construction simplicity.
Solution Approach 2:
Different sections of the suction channel have different functions: the primary duct serves as a common collection point, while branch ducts provide dedicated supply to individual cylinders. This local differentiation optimizes flow distribution without significantly increasing overall complexity.
2Power
If axial piston pumps are designed for high pressure applications, then power output is improved, but delivery flow rate fluctuation increases
Solution Approach 1:
The suction system is segmented into primary and branch ducts, allowing optimized flow paths for high-pressure applications while maintaining stable delivery flow rate through independent cylinder supply.
3Volume of moving object
If axial piston pumps are designed with compact construction, then device volume is reduced, but maintenance access becomes difficult
Solution Approach 1:
The suction valve housing seats are designed to be accessible from the same side as the drive mechanism, allowing maintenance personnel to access both drive components and valve components without requiring large compartments, thus serving multiple maintenance functions from a single access point.
4Power
If axial piston pumps use more than three cylinders, then power output is improved, but device complexity increases
Solution Approach 1:
The suction channel is segmented into one primary duct and multiple branch ducts, providing a scalable architecture that can accommodate any number of cylinders without proportionally increasing complexity. Each additional cylinder simply requires an additional branch duct connection.
Solution Approach 2:
Multiple cylinder supply lines are merged into a single primary duct that collects fluid from all cylinders before distribution, simplifying the overall construction while supporting multiple cylinders for high power output.
Data Source
AI summary
This describes an axial piston pump (1, 1′) with inclined plate for pumping a liquid comprising: a head (20) in which there are at least partially made a plurality of cylinders (25a, 25b, 25c, 25d, 25e) in a number greater than three, with central axes parallel to each other, a plurality of pistons (75) each one sliding in a respective cylinder (25a, 25b, 25c, 25d, 25e) of the plurality of cylinders (25a, 25b, 25c, 25d, 25e) for pumping liquid, a plurality of suction valves (115), each one housed in a respective housing seat made in the head (20), a plurality of suction channels (155a, 155b, 155c, 155d, 155e) made in the head, one for each suction valve (115), each of which, independently from the other suction channels, places a housing seat of a suction valve (115) in fluid communication with the corresponding cylinder (25a, 25b, 25c, 25d, 25e), a plurality of delivery valves (120), each one housed in a respective housing seat made in the head (20), a plurality of delivery channels (160a, 160b, 160c, 160d, 160e) made in the head, one for each delivery valve (120), each of which, independently from the other delivery channels, places a cylinder (25a, 25b, 25c, 25d, 25e) in fluid communication with the housing seat of the corresponding delivery valve (120).