Intake Charged Pump Nozzle Acute Angle Mixing
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Solution Overview
Problem
Vane type pumps in motor vehicles face issues with cavity formation and uneven fluid distribution due to different pressure conditions across suction pockets, leading to potential damage and noise, especially at high transport outputs.
Innovation Solution
A dual-flow intake charged pump design featuring a cylindrical mixing chamber with a nozzle configuration that directs a jet stream at an acute angle to create a common mixing stream with the suction stream, ensuring equal pressure and energy content for both front and back suction pockets, eliminating the need for sharp redirecting edges and minimizing kinetic energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a jet stream is directed perpendicular to the suction pockets through jet chambers, then the fluid can be delivered to both sides of the pump, but kinetic energy is lost due to impact with perpendicular walls
Solution Approach 1:
The patent applies curved flow paths instead of perpendicular walls. The jet stream flows along curved surfaces that guide the fluid smoothly to the suction pockets, eliminating sudden impacts and reducing kinetic energy loss while maintaining effective fluid delivery to both sides of the pump.
Solution Approach 2:
The patent introduces flow separators as intermediary elements that divide the oil return flow into partial flows with equal energy content. These separators act as mediators to distribute fluid evenly to multiple suction pockets while preserving kinetic energy by avoiding sharp redirects.
2Productivity
If different flow paths are used for suction pockets on both sides, then fluid can be delivered to all suction pockets, but different pressure conditions occur causing unequal loading
Solution Approach 1:
The patent segments the oil return flow into separate partial flows using flow separators. Each suction pocket receives a dedicated partial flow with controlled pressure, ensuring uniform loading conditions across all suction pockets while maintaining efficient fluid delivery to each location.
Solution Approach 2:
The patent applies different flow path configurations tailored to each suction pocket's specific requirements. By localizing the flow characteristics to match the individual needs of front and back suction pockets, the system achieves uniform pressure conditions without compromising overall productivity.
3Device complexity
If sharp redirecting edges are used to direct fluid flow, then the pump structure can be simplified, but kinetic energy of the stream is lost
Solution Approach 1:
The patent replaces sharp redirecting edges with curved flow paths and flow separators. These curved structures guide the fluid flow smoothly around corners and changes in direction, maintaining kinetic energy while achieving the same functional goal of directing fluid to the correct locations with minimal structural complexity.
Data Source
AI summary
An intake charged pump for pumping liquid and which has an intake duct that extends to the suction area of the pump. The pump has a duct through which a jet stream flows to the suction area. A nozzle arrangement in the intake duct accelerates the liquid which is returned via the jet stream and supports the suction of a suction stream of the liquid from a storage container. A nozzle of the nozzle arrangement leads into the mixing chamber at an acute angle in a such way that the jet stream, leaving the nozzle, creates a common mixing stream with the suction stream from the storage container, and through which partial streams having essentially the same pressure and energy content, can be delivered to the front and back suction pockets of the double chamber pump.