Blower Device Triangular Sealing Groove Radial Seal
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Solution Overview
Problem
Existing blower devices require multiple sealing elements between the blower housing, diffuser housing, and diffuser, leading to assembly errors, leaks, and axial forces that can cause separation of components.
Innovation Solution
A blower device with a closed triangular sealing groove formed by three sealing surfaces on the blower housing, diffuser housing, and diffuser, using a single elastic sealing element to seal the components, eliminating axial forces and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sealing elements are used between blower housing, diffuser housing, and diffuser, then sealing coverage is improved, but assembly complexity and risk of assembly errors increase
Solution Approach 1:
The patent combines three separate sealing locations into a single integrated sealing groove with a triangular cross-section. This sealing groove is formed by three sealing surfaces from the blower housing, diffuser housing, and diffuser that meet at angles to form a triangle. A single sealing element is inserted into this groove to seal all three component interfaces simultaneously, eliminating the need for three separate sealing elements and reducing assembly complexity while maintaining sealing reliability.
2Reliability
If elastic sealing elements are used to seal components, then sealing effectiveness is improved, but axial forces are generated that can cause component separation
Solution Approach 1:
The patent transitions from axial sealing (where sealing elements would generate axial forces) to radial sealing by orienting the sealing groove in a radial direction. The sealing groove has a triangular cross-section with sides oriented radially, tangentially, and axially, but the sealing action occurs primarily in the radial direction. The sealing element is compressed radially between the diffuser's outer lateral surface and the other two components, eliminating axial forces that could cause component separation while maintaining sealing effectiveness.
3Reliability
If multiple sealing elements are installed at different points, then comprehensive sealing is achieved, but cost increases
Solution Approach 1:
The patent merges the function of three separate sealing elements into a single sealing element that simultaneously seals three component interfaces. The triangular sealing groove geometry allows one sealing element to be compressed against three different surfaces formed by the blower housing, diffuser housing, and diffuser, achieving comprehensive sealing with only one sealing element instead of three, thereby reducing material costs and inventory requirements.
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 reduces the risk of assembly errors and leaks, saves costs on sealing elements, and ensures a secure, leak-free seal without axial forces, enhancing the reliability and efficiency of the blower device.
Implementation Method 1
A sealing element is arranged in the closed triangular sealing groove, which seals off the fan housing, the diffuser housing and the diffuser from one another
Data Source
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AI summary
The invention relates to a fan device having a fan housing for a fan, a diffusor housing secured to the fan housing, and a diffusor received in the diffusor housing, wherein a closed triangular sealing groove with three sealing faces is formed between the fan housing, the diffusor housing and the diffusor, wherein the fan housing, the diffusor housing and the diffusor each form one of the three sealing faces, and wherein a seal element is arranged in the closed triangular sealing groove and seals the fan housing, the diffusor housing and the diffusor with respect to one another.