Pump Drip Control System for Spa Leakage Management
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Solution Overview
Problem
In spa pump systems, minor water leaks at the interface between the pump and motor often lead to premature replacement of pumps, as users and repair personnel mistakenly believe the pump is faulty due to visible leakage, despite the motor being functional.
Innovation Solution
A pump drip control system with a leakage collection chamber and drip cap that directs and collects liquid leakage, allowing it to evaporate or drain, minimizing visibility and preventing unnecessary pump replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water leakage is allowed for lubrication purposes at the impeller shaft interface, then the motor shaft is properly lubricated, but visible water leakage occurs that causes premature pump replacement
Solution Approach 1:
The patent extracts the harmful visible leakage from the pump housing exterior by introducing a dedicated leakage collection chamber that captures water at the source (impeller shaft interface) and redirects it through a drainage path to an external location, separating the necessary lubrication function from the harmful visible leakage
Solution Approach 2:
The patent introduces an intermediary leakage collection chamber and drainage system between the impeller shaft interface and the external environment, which mediates the water leakage by capturing it internally and controlling its discharge path to prevent visible leakage at the pump housing
2Object-generated harmful factors
If a leakage collection chamber is added to collect water, then visible leakage is reduced, but the device complexity increases
Solution Approach 1:
The patent merges the leakage collection chamber with the existing pump housing structure, integrating the collection and drainage functions into the housing itself rather than adding completely separate external components, thereby reducing overall system complexity
Solution Approach 2:
The pump housing is designed to serve multiple functions: it acts as both the structural enclosure and as the leakage collection chamber, while the drainage path serves both as a water discharge route and as a structural feature of the housing, reducing the need for additional dedicated components
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 system effectively reduces the visibility of water leakage, thereby reducing the premature replacement of spa pumps by allowing collected liquid to evaporate or drain, thus extending the life of the pumps.
Implementation Method 1
The slinger assembly is positioned on the portion of the impeller shaft received within the leakage collection chamber, so that, in operation, the slinger assembly directs liquid leakage from the impeller shaft to the drip cap
Implementation Method 2
The gathering chamber can hold a predetermined amount of liquid until the liquid evaporates
Implementation Method 3
The impeller shaft is sealingly engaged with the pump housing via a shaft seal
Data Source
AI summary
A pump drip control system for attachment to a pump assembly to prevent premature replacement of the pump. The control system includes a pump housing having a leakage collection chamber and a drip cap engaged with a second end of the leakage collection chamber. The drip cap includes a circumferential channel defining a flow path to a gathering chamber. The pump drip control system further includes a slinger assembly located within the leakage collection chamber, and wherein, in operation, the slinger assembly directs liquid leakage from the impeller shaft to the drip cap and the circumferential channel within the drip cap which directs the liquid along the circumferential flow path and into the gathering chamber. The gathering chamber can hold a predetermined amount of liquid until the liquid evaporates and includes a liquid exit port for draining excessive liquid out of the pump housing to another location.