Impeller Groove Structure for Water Pump Bubble Discharge
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Solution Overview
Problem
Air bubbles accumulate near the center of rotation in water pumps, leading to lubrication loss and wear of the shaft sleeve, which affects the stability and lifespan of the bearing.
Innovation Solution
A water pump structure with a rotor design featuring grooves and guiding slots on the impeller that disperse and discharge bubbles away from the central hole, preventing accumulation and maintaining lubrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If air bubbles enter the water pump along with the water flow, then the water pump can handle mixed flow, but the bubbles accumulate near the center of rotation above the impeller causing lubrication loss and bearing wear
Solution Approach 1:
The patent extracts the harmful bubbles from the water flow by introducing a dedicated bubble discharge channel that separates and removes accumulated air bubbles from the bearing area, preventing lubrication loss while maintaining the pump's ability to handle mixed flow
Solution Approach 2:
The patent introduces an intermediary bubble discharge channel and bubble discharge hole as a mediator between the water flow and bearing area, allowing bubbles to be safely routed away from the lubrication zone without interfering with the pump's normal operation
2Reliability
If bubbles accumulate near the center of rotation, then the shaft sleeve loses lubrication and wears out, but adding bubble removal structures increases device complexity
Solution Approach 1:
The patent merges the bubble discharge function with the existing impeller structure by integrating the bubble discharge channel and hole directly into the impeller body, eliminating the need for separate bubble removal devices and reducing overall system complexity
Solution Approach 2:
The impeller is designed with multi-functionality, serving both as the rotating component that moves water and as a bubble removal device through its integrated discharge channel and hole, allowing one component to perform multiple functions
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
Prevents bubble accumulation, maintains lubrication, extends the service life of the shaft sleeve, and enhances rotational stability by avoiding wear and gap expansion.
Implementation Method 1
Air bubbles formed in the water flow easily accumulate near the center of rotation above an impeller... The at least one groove extends outward from an inner edge of the central hole to the outer edge of the impeller
Data Source
AI summary
A water pump structure and a rotor thereof are provided. The water pump structure includes a housing, a rotor, a stator, and an isolation component. The rotor is disposed in the housing. The rotor includes an impeller. The impeller has a central hole, an outer edge and at least one groove. The at least one groove is in communication with the central hole. The at least one groove extends outward from an inner edge of the central hole to the outer edge of the impeller. The stator is disposed around a periphery of the rotor. The isolation component is disposed between the rotor and the stator and configured to isolate the rotor from the stator.