Electric Pump Axial Displacement for Compact Attachment
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Solution Overview
Problem
Existing electric pumps require a large attachment space due to the separation of suction and discharge openings in the radial direction, which increases the overall size of the pump.
Innovation Solution
The electric pump design includes a motor unit with a drive shaft that rotationally drives a pump unit, featuring a pump rotor and housing with an attachment surface extending in the axial direction, where the suction and discharge flow paths are positioned with displaced openings on the attachment surface, and a partition wall between them, allowing for compact attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction opening and discharge opening are separated in the radial direction, then the fluid flow paths are clearly defined, but the attachment plate greatly extends in the radial direction requiring large attachment space
Solution Approach 1:
The patent transitions from radial separation to axial displacement of openings. The first and second flow paths are arranged such that their attachment-side openings are displaced in the axial direction on the attachment surface, rather than being separated in the radial direction. This dimensional change allows compact attachment while maintaining flow path separation through the partition wall extending in the radial direction.
2Device complexity
If the attachment plate extends in the radial direction to accommodate separated flow paths, then the pump structure is simple, but the overall pump size increases
Solution Approach 1:
The invention repositions the openings from radial separation to axial displacement, allowing the partition wall to extend in the radial direction while keeping the attachment plate compact. This reduces the pump's overall volume while maintaining the simple structure of having clearly defined first and second flow paths separated by the partition wall.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces the size of the attachment portion by allowing the suction and discharge openings to be closer in both the radial and axial directions, thereby minimizing the overall pump size while maintaining efficient fluid flow.
Implementation Method 1
a pump rotor that sends the fluid from a suction side to a discharge side by rotating by a driving force of the driving shaft
Data Source
AI summary
An electric pump includes a motor unit rotationally driving a drive shaft, and a pump unit. The pump unit includes a pump rotor that sends the fluid by a driving force of the driving shaft, and a pump housing that covers at least one side of the pump rotor. The pump housing includes an attachment surface extending in the axial direction and in contact with an attached body, first and second flow paths respectively on the suction side and the discharge side, and a partition wall positioned between pump-side openings of the first flow path and the second flow path facing the pump rotor, and extends in a direction along the attachment surface, and locations of attachment-side openings of the first flow path and the second flow path on the attachment surface are displaced from each other on the attachment surface in the axial direction.