Water Circulation Pump Impeller Air Discharge Mechanism
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Solution Overview
Problem
Existing water circulation pumps generate unpleasant noise during transition states due to air discharge when they temporarily stop and then re-operate, disrupting comfortable sleep in applications like heating mats.
Innovation Solution
The pump design incorporates a spring mechanism between the impeller and inner housing, combined with vertical and horizontal discharge holes in the impeller, to effectively discharge air and fluid from the flow pathway, ensuring smooth operation and reducing noise during transition states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the pump stops operating for a certain period of time to control water circulation, then energy consumption is reduced and temperature is maintained, but air is introduced into the flow pathway and noise is generated when the pump re-operations
Solution Approach 1:
The discharge holes are pre-configured in the impeller to enable immediate discharge of air and fluid upon pump startup, before noise can be generated during the transition state
Solution Approach 2:
Air and fluid are extracted from the flow pathway through the discharge holes, removing the source of noise generation during transition states
2Reliability
If air is discharged from the flow pathway during transition state, then noise is generated, but if air remains in the flow pathway, then impeller rotation is affected and durability is reduced
Solution Approach 1:
The discharge holes are designed to actively remove air and fluid from the flow pathway before the impeller can be affected, preventing both noise and damage
Solution Approach 2:
The discharge holes act as intermediary channels that facilitate the removal of air and fluid from the flow pathway, mediating between the pump operation and noise prevention
3Productivity
If the impeller rotates at high speed, then water circulation efficiency is improved, but cavitation occurs and vibration or noise is generated from contact with housing surfaces
Solution Approach 1:
Air and fluid are extracted from the flow pathway through the discharge holes, preventing cavitation and the vibration/noise that would result from impeller contact with housing surfaces
Solution Approach 2:
The discharge holes ensure continuous removal of air and fluid during high-speed rotation, maintaining smooth water circulation and preventing disruptive contact between the impeller and housing
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 solution enables quiet operation during pump startup and shutdown, enhancing user comfort by efficiently removing air and fluid from the discharge holes, thus preventing noise and maintaining pump efficiency.
Implementation Method 1
a spring (65) installed between a lower surface of the impeller and the inner housing
Implementation Method 2
rotating an impeller installed with a rotor by the electromagnetic induction between a stator and the rotor
Data Source
AI summary
A pump for circulating water includes an upper housing 10 formed with an inlet 11 and an outlet 12 of fluid; a lower housing 20 arranged in a lower side of the upper housing 10, having a space formed therein; an inner housing 30 having an edge part interposed between the upper housing 10 and the lower housing 20, and an impeller receiving space 31 formed in a middle part; an impeller 50 received inside the upper housing 10 and in the impeller receiving space 31 to be rotatably installed; a rotor 60 installed inside an outer circumference of the impeller 50; a spring 65 installed between a lower surface of the impeller and the inner housing; and a stator 70 installed inside the lower housing 20.