Vehicle Air Conditioning Support Member Rib Sticking-Out Portion
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Solution Overview
Problem
Air conditioning devices for vehicles generate unpleasant noise due to unbalanced air flow rates and pressures caused by the structure of support members, leading to amplified NZ sound.
Innovation Solution
An air conditioning device design featuring a support member with a rib portion and a sticking-out portion that extends transversely, positioned at least partially at the opening, to suppress warping of the filter section and disturb air flow, thereby reducing noise generation by preventing gas stagnation and maintaining rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a support member is provided to suppress warping of the filter section, then the filter section is supported, but noise generation is increased due to unbalanced air flow
Solution Approach 1:
The support member incorporates a sticking-out portion that creates localized flow disturbance in the air passage. This local structural feature modifies the air flow pattern specifically around the support member, preventing stagnation and unbalanced flow that would otherwise cause noise, while the rib portion maintains the overall structural support function.
Solution Approach 2:
The support member extends not only in the longitudinal direction (rib portion) but also protrudes in the transverse direction (sticking-out portion). This dimensional extension into the air passage space allows the support member to actively influence air flow patterns, creating flow disturbance that prevents stagnation and reduces noise generation.
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 support member effectively reduces noise generation by ensuring a uniform air flow rate and pressure into the blower, minimizing the amplification of NZ sound and preventing filter section warping.
Implementation Method 1
the sticking-out portion of the support member can reduce noise generation. According to the finding of the inventors, the sticking-out portion provided disturbs the flow of gas around the support member
Implementation Method 2
the rib portion provided maintains rigidity of the support member extending in the longitudinal direction
Data Source
AI summary
An air conditioning device for a vehicle (1) includes: a housing (2) having an opening (2M); a blower (4) having a fan (9) accommodated within the housing and rotating about a rotation axis parallel to a first axis; a filter section (5) which is disposed between a gas inlet (7) and the opening and through which gas taken in from the gas inlet and flowing into the opening passes; and a support member (6) disposed between the blower and the filter section so as to be located at least partially at the opening, and supporting the filter section. The support member has a rib portion (61) extending in a longitudinal direction in a predetermined plane orthogonal to the first axis, and a sticking-out portion (62) sticking out from the rib portion in a transverse direction in the predetermined plane orthogonal to the longitudinal direction.