Bilobular Sump Pump Container Asymmetry
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Solution Overview
Problem
Conventional sump pump containers with circular cross-sections often require larger diameters to accommodate multiple pumps, leading to excessive excavation and expense, as the pumps can interfere with each other and the container walls, necessitating larger sump pits.
Innovation Solution
The development of oblong, ellipsoidal sump containers with a bilobular cross-section, providing a larger interior area to accommodate two or more sump pumps without interference, while maintaining a similar width and volume to conventional containers, allowing for efficient use of existing excavation dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a conventional circular sump container is used, then the structure is simple and easy to manufacture, but the interior floor area is insufficient to accommodate multiple pumps without interference
Solution Approach 1:
The patent applies asymmetry by transitioning from a conventional circular cross-section to an oblong cross-section with non-circular geometry. This asymmetric shape provides increased interior floor area while maintaining a compact external footprint, allowing multiple pumps to be accommodated without interference. The oblong shape optimizes the ratio of interior floor area to external dimensions, resolving the contradiction between area and complexity.
Solution Approach 2:
The patent utilizes dimensionality change by evolving from a two-dimensional circular floor plan to a three-dimensional oblong configuration with optimized length-to-width ratios. This dimensional transformation increases the available floor area within the same external envelope, enabling multiple pumps to coexist without requiring proportional increases in all dimensions, thus avoiding excessive excavation.
2Reliability
If the container diameter is increased to accommodate multiple pumps, then pump interference is prevented, but excavation volume and expense increase
Solution Approach 1:
The patent applies parameter changes by modifying the cross-sectional geometry from circular to oblong, changing the distribution of interior space parameters. This geometric parameter transformation increases the floor area efficiency, allowing multiple pumps to operate reliably without requiring a proportional increase in overall container volume or excavation size.
Solution Approach 2:
While moving away from the circular form, the patent maintains smooth curved surfaces in the oblong configuration, preserving the beneficial properties of curved geometries (no sharp corners, efficient material distribution) while achieving superior space utilization for multiple pump installations within a compact volume.
3Volume of stationary object
If pumps are positioned closer together to fit within a smaller container, then excavation is reduced, but pump interference and inoperability increase
Solution Approach 1:
The oblong asymmetric geometry provides optimized spacing distribution, allowing pumps to be positioned at appropriate distances from each other and from container walls. This asymmetric layout prevents interference between pump components (lever arms, floats) while maintaining a compact overall volume, resolving the contradiction between size and reliability.
Data Source
AI summary
The present invention relates to novel oblong, preferably bilobular, sump containers or reservoir housings for containing sump pump stands and two or more sump pumps, which containers are more narrow, side-to-side, than conventional circular, frustroconical larger volume sump containers, and only slightly longer or wider lengthwise than such conventional standard-size containers, to provide a substantially larger interior integrated oblong cross-sectional floor area for the containment of two or more sump pumps without interference with each other. The present housings preferably have a top oblong reinforcing rim and a reinforcing bridge connecting the reinforcing rim across the width of said container. The present sump pump reservoir housings also have a two-piece oblong or bilobular cross-section cover which is attachable to the reinforcing rim to enclose the housing and which includes ports for the extension of pump discharge conduits from pumps within the housing through the cover to a discharge area.