Protective Hood Assembly With Dynamic Filter Connection
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Solution Overview
Problem
Conventional protective equipment for aseptic clean rooms and medical intensive care units is cumbersome, uncomfortable, and prone to issues like fogging and incomplete head protection, which can lead to contamination risks and high costs.
Innovation Solution
A protective hood arrangement with a breathing air filter firmly connected to the hood, featuring fastening structures that allow for easy assembly and secure attachment, preventing axial movement and allowing for rotational adjustment, thus enhancing comfort and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional protective equipment is used, then protection against contamination is achieved, but comfort and ease of operation deteriorate
Solution Approach 1:
The protective equipment is divided into separate modular components: a protective hood, a breathing air filter, and a housing for the fan. This segmentation allows each component to be optimized independently and makes the system easier to put on and take off while maintaining protection.
Solution Approach 2:
The connection between the breathing air filter and the protective hood is designed to be dynamic rather than fixed. The fastening structures allow for easy attachment and detachment, enabling the user to quickly adjust or remove components based on comfort needs while maintaining protection when assembled.
2Reliability
If conventional protective equipment is used, then protection against contamination is achieved, but device complexity and cost increase
Solution Approach 1:
By separating the protective hood, breathing air filter, and fan housing into independent modules, the system becomes simpler to assemble and maintain. Each component can be independently replaced or adjusted without affecting the others, reducing overall complexity.
Solution Approach 2:
The fastening structures are designed to enable self-assembly without requiring complex alignment procedures or specialized tools. The user can independently attach and detach components by simply pushing the outlet nozzle onto the intake nozzle, reducing maintenance complexity.
3Reliability
If a breathing air filter is connected to the protective hood, then air quality is improved, but ease of operation deteriorates due to complex connection arrangements
Solution Approach 1:
Instead of requiring the breathing air filter to be precisely aligned and secured in a complex manner, the design inverts the approach by allowing the filter to be pushed onto the housing in any circumferential position. The fastening structures then lock this position, simplifying assembly while maintaining air quality.
Solution Approach 2:
The connection mechanism changes the parameter of circumferential positioning from a constrained requirement to a free parameter. The outlet nozzle can be pushed onto the intake nozzle at any angle, and the fastening structures accommodate this variability, making assembly easier while ensuring proper connection for air quality.
4Reliability
If bayonet connections are used for the breathing air filter, then connection security is improved, but ease of operation worsens due to required correct positioning
Solution Approach 1:
The design inverts the bayonet connection approach by allowing the outlet nozzle to be pushed onto the intake nozzle in any circumferential position first, then using fastening structures to lock the connection. This eliminates the need for precise initial positioning while maintaining connection security.
Solution Approach 2:
The fastening structures are designed to engage automatically as the outlet nozzle is pushed onto the intake nozzle, providing preliminary securing action. This preliminary action eliminates the need for precise alignment during assembly while ensuring secure connection, combining the benefits of ease of operation with connection security.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a protective hood arrangement comprising a protective hood (1) covering the user's head and shoulders, made of flexible, compliant material and with a viewing window (3), a support structure (7) for the protective hood (1), an active air exchange system, preferably with a blower and associated control arrangement, and a housing (5) for at least one component of the air exchange system, preferably the blower, which is preferably arranged inside the protective hood (1) and separate from the protective hood (1), with an intake port (6) for connection to a breathing air filter (4). The housing (5) is preferably attached to the support structure (7) inside the protective hood (1).The breathing air filter (4) is arranged on the outside of the protective hood (1) and is provided with an outlet nozzle (9) that passes through the protective hood (1) in a sealed manner. This outlet nozzle is designed to be complementary to the intake nozzle (6) and is provided with fastening structures for connection to it. Complementary fastening structures are provided on the intake nozzle (6).