Inflatable Sack Awning Thermal Insulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Sack awnings for caravans or mobile homes lack thermal insulation due to their single-ply fabric construction, which contrasts with the well-insulated caravans or mobile homes themselves.
Innovation Solution
The roof element of the sack awning is designed as an inflatable, flat hollow body with multiple air chambers, using airtight materials and valves for air control, allowing for improved thermal insulation and stability without the need for longitudinal and transverse struts, supported by support rods at the front end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sack awning is made from single-ply fabric panels, then the structure remains simple and portable, but thermal insulation performance deteriorates
Solution Approach 1:
The patent applies pneumatic principles by inflating the fabric panels to create air-filled chambers. The panels are equipped with valves that allow air to be pumped in, creating rigid, insulated structures. This pneumatic inflation transforms the soft, non-insulating fabric into thermally insulating chambers that trap air, thereby improving thermal insulation while maintaining the simple fabric-based construction approach.
Solution Approach 2:
The patent creates a composite structure by combining fabric material with trapped air chambers. The fabric panels form the outer shell while the inflated air spaces create an insulating layer. This composite of solid fabric and gaseous air provides both structural integrity and thermal insulation properties, resolving the contradiction between simplicity and insulation performance.
2Temperature
If the roof element is designed as an inflatable hollow body with multiple chambers, then thermal insulation and structural stability are improved, but device complexity increases
Solution Approach 1:
The patent divides the roof element into multiple separate hollow chambers rather than using a single large chamber. Each chamber can be independently inflated and controlled via its own valve. This segmentation improves thermal insulation by creating multiple air layers and enhances structural stability by distributing mechanical loads across separate chambers, while the modular nature actually simplifies the overall system architecture.
Solution Approach 2:
The patent introduces dynamic elements through inflatable chambers with controllable valves. The structure can be dynamically adjusted by inflating or deflating individual chambers, allowing the awning to transition between different states (set up, collapsed, adjusted). This dynamic capability provides structural stability when needed while maintaining portability and simplicity when deflated.
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
This design enhances thermal insulation, particularly in winter conditions, while maintaining portability by allowing the inflatable roof element to be rolled up and stored, and provides structural stability through internal chambers and optional longitudinal and transverse struts.
Implementation Method 1
An air layer between the two airtight layers, for example made of plastic-coated fabric, creates an air layer that has a more or less thermally insulating effect depending on the selected thickness.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an extension of a caravan (1) or a motorhome (1), comprising a roof element which is supported on the ground at least at the free front end by at least one support rod (12), wherein the roof element is designed as a flat hollow body (5) that is inflatable.