Electric Pump PCB Radial Layout for Axial Size Reduction
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Solution Overview
Problem
The existing electric pump designs face challenges in minimizing size increase along the motor's rotation axis while ensuring electrical conductivity between the motor's coil and the printed circuit board.
Innovation Solution
The electric pump incorporates a conductive member to connect the printed circuit board to the motor's coil, positioning it radially outward from the impeller housing portion, which allows for compact design and maintains electrical conductivity without increasing the pump's size in the rotation axis direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the printed circuit board is positioned at the other side of the motor housing portion, then electrical conductivity between the coil and printed circuit board is ensured, but the size of the electric pump increases in the rotation axis direction
Solution Approach 1:
The patent positions the printed circuit board at the same side as the motor housing portion (radially outward direction) instead of the conventional opposite side arrangement, changing the spatial dimension of component layout from axial to radial placement, thereby reducing the overall size in the rotation axis direction while maintaining electrical connectivity through a conductive member
Solution Approach 2:
The patent introduces a conductive member as an intermediary component to establish electrical connection between the coil and the printed circuit board, enabling the printed circuit board to be positioned at the same side as the motor housing portion without compromising electrical conductivity, thus resolving the contradiction between compact size and reliable electrical connection
2Length of moving object
If the printed circuit board is repositioned to suppress size increase, then the size in rotation axis direction is reduced, but electrical conductivity between the coil and printed circuit board may be compromised
Solution Approach 1:
The conductive member serves as a mediator that bridges the coil and the printed circuit board, enabling the printed circuit board to be positioned radially outward from the motor housing portion without compromising electrical connectivity, thus achieving size reduction while maintaining reliable electrical conductivity
Solution Approach 2:
By relocating the printed circuit board to the same side as the motor housing portion in the radial direction rather than the axial direction, the patent achieves compact size in the rotation axis direction while the conductive member ensures electrical conductivity is maintained through this new spatial arrangement
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 configuration effectively suppresses size increase along the motor's rotation axis and ensures reliable electrical conductivity between the motor's coil and the printed circuit board, enhancing the pump's efficiency and compactness.
Implementation Method 1
a motor (M)
Data Source
AI summary
An electric pump includes: a motor; an impeller rotated by the motor; a motor housing portion that houses the motor; an impeller housing portion that houses the impeller and is positioned at one side with respect to the motor housing portion in a rotation axis of the motor; an introduction pipe portion that introduces a fluid into the impeller housing portion and is positioned at the one side with respect to the motor housing portion; a discharge pipe portion that discharges the fluid from the impeller housing portion; and a printed circuit board electrically connected to a coil of the motor and positioned at the one side with respect to the motor housing portion.