Reinforced Air Conditioner Housing for CO2 Explosion Containment
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Solution Overview
Problem
Current air conditioning systems for vehicles using CO2 as a refrigerant face challenges in designing components to withstand higher pressures, leading to insufficient occupant protection and complex, expensive solutions, as existing housings are not adequately reinforced to handle potential explosions.
Innovation Solution
The housing is lined with high-strength reinforcing fabric, such as Kevlar, on the inner surface, combined with an outer layer of plastic or metal, and aluminum foils for mechanical support and thermal insulation, providing a simple, inexpensive, and safe solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the housing is made of plastic as currently used, then the housing is lightweight and inexpensive to produce, but it provides insufficient protection against system explosions when operated with CO2
Solution Approach 1:
The patent applies composite materials by combining a plastic housing with a reinforcing fabric made of high-strength fibers (such as Kevlar) that is tensioned within the housing. This composite structure maintains the lightweight and cost-effective properties of plastic while adding the explosion protection capabilities of high-strength fibers, thereby resolving the contradiction between ease of manufacture and occupant protection.
Solution Approach 2:
The patent utilizes a flexible reinforcing fabric made of high-strength fibers that can be tensioned within the housing structure. This flexible fabric acts as a containment layer that can withstand explosion pressures while being relatively thin and lightweight, providing protection without significantly increasing the housing's weight or manufacturing complexity.
2Object-affected harmful factors
If the housing is reinforced with high-strength fibers throughout, then occupant protection is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent segments the housing structure into distinct functional layers: an outer plastic housing structure and an inner reinforcing fabric layer. This segmentation allows each layer to be optimized independently - the plastic housing provides structural support and ease of manufacture, while the reinforcing fabric provides explosion protection - thereby reducing overall manufacturing complexity compared to a fully reinforced structure.
Solution Approach 2:
The patent applies local quality by positioning the reinforcing fabric specifically within the housing where it is most needed for explosion protection, rather than uniformly reinforcing the entire structure. The fabric is tensioned to provide targeted reinforcement in critical areas, reducing material usage and manufacturing complexity while maintaining adequate protection levels.
3Reliability
If a reinforced cylinder block is used in the compressor, then the compressor can withstand higher CO2 pressures, but other components remain insufficiently reinforced
Solution Approach 1:
The patent applies universality by implementing a standardized reinforcing fabric solution that can be applied across multiple components of the air conditioning system, not just the compressor. The same principle of using tensioned high-strength fiber fabric within housings can be universally applied to the housing, dryer container, and other pressure-containing components, ensuring system-wide pressure resistance and eliminating the need for component-specific reinforcement designs.
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 configuration ensures adequate protection against system explosions and thermal insulation while being cost-effective and suitable for operation with CO2 refrigerant, enhancing occupant safety and system stability.
Implementation Method 1
An aluminum foil is arranged on the inside and outside of the reinforcement fabric
Implementation Method 2
If the reinforcement fabric is of sufficient thickness, it also provides thermal insulation for the air-conditioning system in cooperation with the aluminum foils
Data Source
Figure 1~2
AI summary
The invention relates to a housing (10) for an air conditioning system, which comprises walls (22) and a reinforcing fabric (24) made from synthetic fibers. It is proposed that the walls (22) be lined on the inside with the reinforcing fabric (24). The housing (10) is not very complex to manufacture.