Retractable Spa Cover Frame with Angled Top for Heat Loss Reduction
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Solution Overview
Problem
Existing automatic spa covers are bulky, difficult to operate, and inefficient in thermal insulation, especially for larger spas, which leads to heat loss and accumulation of debris and water, requiring large and powerful lifting mechanisms.
Innovation Solution
A retractable frame with hydrophobic, sealed thermal insulation that slides along the spa's edges using rollers or wheels, combined with a separate angled top cover that allows debris to dry and fall off, and a motorized roller system for easy operation and reduced force requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If thick insulated covers are used to reduce heat loss, then thermal insulation is improved, but the cover becomes bulky and difficult to spread over the spa
Solution Approach 1:
The cover system is divided into two separate components: a thin thermal insulation layer and a removable bulk cover. The insulation layer remains attached to the spa rim, while the bulk cover can be independently removed and repositioned, eliminating the bulkiness problem while maintaining thermal efficiency.
Solution Approach 2:
The bulk cover is designed to be removable and storable in a vertical dimension (hanging or stored against the spa wall) rather than occupying horizontal space, reducing the perceived bulkiness while maintaining insulation coverage when needed.
2Ease of operation
If automatic covers with lifting mechanisms are used for large spas, then ease of operation is improved, but the device becomes large and powerful
Solution Approach 1:
The heavy bulk cover is extracted as a separate removable component, allowing the lifting mechanism to only move the lightweight insulation layer and thin cover, dramatically reducing the size and power requirements of the automatic operation system.
Solution Approach 2:
The system transitions from a static heavy cover that must be lifted entirely to a dynamic system where the bulk cover can be partially removed or repositioned, reducing the mechanical work required for automatic operation.
3Adaptability or versatility
If the spa has a large open top to allow swimming space, then swimmer comfort is improved, but debris and objects accumulate in the spa
Solution Approach 1:
The bulk cover is designed to be placed over the spa opening before debris can fall in, preventing contamination in advance. The cover can be quickly deployed when the spa is not in use, maintaining the large opening for swimming when needed while preventing debris accumulation during idle periods.
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 provides a compact, easy-to-operate, thermally insulated spa cover that reduces heat loss and debris accumulation, minimizing the need for large lifting mechanisms and maintaining spa heat efficiently.
Implementation Method 1
A retractable frame with hydrophobic, sealed thermal insulation
Implementation Method 2
A retractable frame with hydrophobic, sealed thermal insulation
Implementation Method 3
slides along the spa's edges using rollers or wheels
Data Source
AI summary
An automatic spa cover for covering a spa is described having a retractable frame, which rides along a top surface of the spa, attached to a front edge of an insulated cover. A motorized cover roller is attached to a back edge of the insulated cover and functions to roll up and retract the insulated cover and pull the frame to slide along the top lip of the spa side walls to retract the frame. In one embodiment, the frame is spring-loaded and extends from its retracted position to its extended position by the force of the springs. In an alternative embodiment, conventional actuation devices may be used to extend the frame. It also includes a retractable angled top cover covering the retractable frame which is supported by a curved guide proximate the motorized cover roller.