Integrated Rotary Valve Pump With Submersible BLDC Motor Sealing
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Solution Overview
Problem
Existing pumps for vehicles with electrical components require costly actuators and dynamic sealing elements to prevent fluid ingress, which can lead to pump failure, necessitating a solution for integrated valve and submersible motor design.
Innovation Solution
A pump assembly with a housing, impeller, and a magnetic body that drives fluid flow, featuring a rotary valve and actuator motor integrated within the pump section to control fluid flow without external actuators, utilizing a brushless DC electric motor and elastomeric seals for fluid isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external actuators and dynamic sealing elements are used in conventional pumps, then fluid flow control is achieved, but component costs increase and reliability decreases due to fluid ingress risks
Solution Approach 1:
The valve member is integrated directly into the pump housing, eliminating the need for external actuators and separate sealing systems. The valve member includes integrated sealing surfaces that mate with the pump housing, combining multiple functions into a single unified structure that prevents fluid ingress while reducing component count
Solution Approach 2:
The valve member serves multiple functions simultaneously: it controls fluid flow direction, provides sealing against the pump housing, and eliminates the need for separate actuator mounting structures. This multi-functional design reduces the overall system complexity while maintaining reliability
2Adaptability or versatility
If external actuators are used for valve control, then flow direction control is achieved, but component costs increase
Solution Approach 1:
The valve member is formed as an integral part of the pump housing assembly, eliminating the need for separate external actuators. The integrated design reduces part count and assembly complexity, directly lowering manufacturing costs while maintaining full flow control capability
Solution Approach 2:
The pump housing with integrated valve member provides both structural support and flow control functions in a single component. This multi-functionality eliminates the need for separate actuator assemblies, reducing manufacturing complexity and cost
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
The integrated design reduces component costs and prevents fluid ingress, enhancing pump reliability and efficiency by eliminating the need for external actuators and dynamic sealing elements.
Implementation Method 1
A magnetic body rotates the impeller
Implementation Method 2
utilizing a brushless DC electric motor and elastomeric seals for fluid isolation
Data Source
AI summary
A pump assembly and method is disclosed comprising, a pump including a pump housing having a fluid inlet and at least one fluid outlet extending from the pump housing. A magnetic body of a brushless DC motor is submerged in the fluid and drives an impeller that moves the fluid from the fluid inlet to the at least one fluid outlet. A valve rotatably mounted between the impeller and the at least one fluid outlet selectively directs the flow of fluid through the at least one fluid outlet.