External Vacuum Inlet Valve With Visible Hose Connection
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Solution Overview
Problem
Existing central vacuum systems require inlet valve assemblies to be constructed during structure construction, limiting the ability to install them externally after the structure is completed, and there is a challenge in visually controlling the connection of a hose with the valve assembly inside the conduit.
Innovation Solution
A vacuum inlet valve assembly designed to be mounted exterior to a preexisting wall, with a clear or translucent conduit allowing visual control of the hose connection, featuring a housing with a cylindrical portion, sleeve seal, and ball seal to facilitate hose extraction and connection, enabling external installation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the inlet valve assembly is set within the wall during construction, then the installation is integrated into the structure, but the installation flexibility is reduced and cannot be performed after structure completion
Solution Approach 1:
The inlet valve assembly is divided into separate components: a mounting plate for wall attachment and the valve body itself. This segmentation allows the mounting plate to be installed on the wall independently, enabling flexible post-construction installation while keeping the valve body removable and replaceable without replacing the entire assembly.
Solution Approach 2:
The mounting plate is prepared and installed on the wall in advance, creating a pre-prepared mounting surface. This preliminary action enables the valve body to be easily attached later without requiring complex wall modifications, thus improving installation flexibility while maintaining simplicity.
2Reliability
If the hose connection is made inside the conduit, then the connection is protected, but visual control of the connection process is lost
Solution Approach 1:
A clear or translucent section of conduit is introduced as an intermediary element between the external environment and the internal connection area. This allows operators to visually monitor the hose connection process through the transparent section, ensuring proper connection while maintaining the protective enclosure of the conduit system.
Solution Approach 2:
The conduit material changes from opaque to transparent in the connection zone, enabling visual detection of the connection status. This optical property change allows operators to observe the hose insertion and sealing process without compromising the protective function of the conduit.
3Ease of manufacture
If the valve assembly is constructed during structure construction, then the integration is complete, but the ability to install externally after completion is lost
Solution Approach 1:
The valve assembly is segmented into a mounting plate portion that can be installed during or after construction, and a valve body portion that can be attached separately. This allows the system to be installed in stages, providing flexibility in installation timing while maintaining ease of assembly through simple mechanical connections.
Solution Approach 2:
The mounting plate is designed with universal mounting features that work with various wall types and construction stages. This multi-functional design allows the same mounting mechanism to be used whether installed during initial construction or as an after-market addition, thereby achieving both ease of manufacture and installation timing flexibility.
Data Source
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AI summary
A vacuum inlet valve assembly (10) has a housing (26) configured to be mounted exterior to a pre-existing wall in a structure such that the housing is connected with a conduit and the conduit is exterior to the wall and retains a hose therein, and the hose is adapted to be pulled out from a stored position within the conduit external from the wall to an extracted position, and when in the extracted position, an end cap or hose plug on the hose is releasably connected with a connection assembly (30) in the housing. A portion of the conduit is clear or translucent or transparent so an operator can watch the end cap or hose plug approach the connection assembly.