Electromagnetic Pump Suction Check Valve Diameter Reducing Portion
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Solution Overview
Problem
Electromagnetic pump devices face challenges in achieving a compact configuration while ensuring smooth fluid suction due to the need for a larger inlet check valve mechanism to accommodate a stepped portion for reducing flow resistance at the strainer, which increases the device's size.
Innovation Solution
The electromagnetic pump device incorporates a suction check valve with a tubular portion and a flange portion, featuring a through hole that forms a suction port with a diameter reducing portion, where the diameter reduction varies from a large value to a small value, allowing for a compact design and efficient fluid suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a stepped portion is formed at the suction port to reduce flow resistance, then fluid flow smoothness is improved, but the inlet check valve mechanism size increases
Solution Approach 1:
The invention applies a diameter reducing portion with variable reduction degree (larger at the flange portion, smaller toward the tubular portion) to create localized flow optimization without uniformly increasing the entire valve mechanism size. This graduated diameter reduction provides flow resistance reduction where needed while maintaining compact overall dimensions.
Solution Approach 2:
Instead of increasing the axial length of the suction port to accommodate flow optimization features, the invention uses radial diameter variation through the diameter reducing portion. This dimensional approach allows flow resistance reduction while maintaining a compact axial profile and overall valve size.
2Strength
If the flange portion thickness is increased to accommodate the stepped portion, then structural strength is improved, but the device size increases
Solution Approach 1:
The diameter reducing portion creates localized thickness variation within the flange portion, providing structural strength where needed while avoiding uniform thickness increase throughout. The variable diameter reduction allows optimal material distribution for strength without excessive size increase.
3Productivity
If the suction port diameter is increased to accommodate the stepped portion, then flow resistance is reduced, but the inlet check valve mechanism becomes larger
Solution Approach 1:
The diameter reducing portion creates localized diameter variation along the suction port length, with larger diameter at the flange portion for reduced flow resistance and gradual reduction toward the tubular portion. This provides flow optimization without requiring a uniformly large suction port throughout.
Solution Approach 2:
The invention addresses flow resistance through radial diameter variation rather than increasing the axial length of the suction port. This allows flow optimization while maintaining a compact overall suction port size and valve mechanism dimensions.
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 enables smooth fluid suction while maintaining the thickness of the flange portion, preventing an increase in the device's size and allowing for easy processing, thus achieving a compact and efficient electromagnetic pump design.
Implementation Method 1
an electromagnetic portion, a movable iron core capable of moving back and forth in the axial direction inside a pump chamber by turning on and off the electromagnetic portion
Implementation Method 2
the suction check valve is formed with a diameter reducing portion formed such that the inside diameter of the through hole is reduced from the flange portion toward the tubular portion with a degree of diameter reduction varied from a large value to a small value
Data Source
AI summary
An electromagnetic pump including a suction check valve including a tubular portion and a flange portion that extends in a radial direction from an end edge of the tubular portion, the suction check valve being formed with a through hole that penetrates the tubular portion and the flange portion to form a suction port in an end surface of the flange portion. A strainer attached to the suction port and having a pore forming region which is larger than an inside diameter of the through hole at the tubular portion and in which a large number of pores are formed. The suction check valve is formed with a diameter reducing portion formed such that the inside diameter of the through hole is reduced from the flange portion toward the tubular portion with a degree of diameter reduction varied from a large value to a small value.