Hair Dryer Diffuser Curvature for Reduced Gas Leakage
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Solution Overview
Problem
Existing hair dryers with diffusers do not effectively account for the curved shape of a user's head, leading to gas leakage and reduced effectiveness of scalp and hair care features.
Innovation Solution
A diffuser with a triangular shape structure and alternating convex and concave curved portions to fit the head's curvature, along with a discharge cover and massage protrusions, ensuring close contact and efficient gas delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a diffuser with a plain round structure is used, then the structure is simple and easy to manufacture, but gas leaks through the region between the diffuser and the user's head, reducing care effectiveness
Solution Approach 1:
The diffuser front end is designed with a curved surface that corresponds to the curvature of the user's head, allowing the diffuser to conform closely to the head shape. This curved design prevents gas leakage between the diffuser and head, improving gas delivery effectiveness while maintaining manufacturing feasibility through standard curving techniques.
2Reliability
If a diffuser is designed to fit the curved head shape, then gas leakage is minimized and care effectiveness is improved, but the diffuser structure becomes more complex
Solution Approach 1:
Only the front end portion of the diffuser that contacts the user's head is designed with a curved surface matching head contours. The rear portion and internal components maintain simpler geometries, thereby achieving effective head contact and gas delivery without excessive overall structural complexity.
3Ease of operation
If the diffuser is spaced apart from the user's head, then comfort is improved, but gas leakage occurs and massage protrusions become away from the scalp
Solution Approach 1:
The curved front end surface of the diffuser conforms to the natural curvature of the user's head, enabling close contact without creating pressure points or discomfort. This curvature allows the diffuser to maintain intimate contact for effective gas delivery and massage protrusion contact while preserving user comfort during extended use.
Data Source
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AI summary
A diffuser and a hair dryer including the same are disclosed. The diffuser includes a diffusing case having a rear side removably coupled to a main body of a hair dryer, wherein gas discharged from the main body is introduced into the diffusing case through a gas inlet hole defined at the rear side, wherein an open surface is defined at a front side of the diffusing case such that the gas introduced into the diffusing case is discharged to outside through the open surface, wherein the diffusing case includes a front circumferential portion surrounding the open surface, wherein the front circumferential portion includes a first portion and a second portion, and wherein the first portion is at least partially located forwardly of the second portion.