Vehicle Aromatherapy Diffuser Pump Housing for Noise and Vibration Damping
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Solution Overview
Problem
Existing vehicle-mounted aromatherapy diffusers suffer from excessive noise during operation due to amplified mechanical vibrations and airflow noise, particularly in confined vehicle interiors, compromising cabin tranquility and interfering with in-vehicle voice systems.
Innovation Solution
The diffuser incorporates an air pump assembly encapsulated in a flexible second housing, buckled to a rigid third housing, forming a closed mounting structure that buffers vibrations and absorbs noise, while maintaining a stable connection with the atomization mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional rigid air pump structures are used to ensure atomization efficiency, then atomization performance is improved, but mechanical friction noise and airflow whistling noise increase significantly
Solution Approach 1:
The patent applies flexible sound insulation cotton and vibration damping cotton as flexible acoustic barriers within the air pump housing. These flexible materials line the internal cavities and airflow channels to absorb mechanical friction noise and dampen airflow whistling noise, while allowing the rigid pump structure to maintain its atomization efficiency. The flexible materials are strategically placed in contact with vibrating surfaces and airflow paths to reduce noise generation and transmission.
Solution Approach 2:
The patent employs composite noise reduction structures combining sound insulation cotton, vibration damping cotton, and rigid housing materials. This composite approach creates a multi-functional structure where the rigid portions maintain structural integrity and atomization performance, while the soft porous materials provide noise absorption and vibration damping, achieving both high productivity and low noise operation.
2Productivity
If high-speed motors are used to meet atomization requirements, then atomization efficiency is improved, but operational noise and mechanical vibrations are amplified
Solution Approach 1:
The patent implements beforehand cushioning by pre-installing vibration damping cotton and sound insulation materials within the air pump housing before operation. These materials are positioned in advance to cushion and absorb the mechanical vibrations and noise generated by high-speed motors during atomization operation, allowing the system to maintain high atomization efficiency while reducing operational noise and vibrations from the outset.
Solution Approach 2:
The patent introduces vibration damping cotton and sound insulation materials as intermediary elements between the high-speed motor and the external environment. These intermediary materials absorb and dampen the mechanical vibrations and noise generated by the motor, preventing direct transmission to the housing and surrounding areas, thereby enabling high-speed operation with reduced noise and vibration.
3Strength
If rigid pump body structures are used to ensure structural stability, then structural integrity is improved, but resonance and sound transmission in the housing increase
Solution Approach 1:
The patent lines the rigid pump body interior with flexible sound insulation cotton and vibration damping materials. These flexible layers are applied to the internal surfaces of the rigid housing, creating a composite structure where the rigid outer shell maintains structural integrity while the inner flexible layers absorb resonance and block sound transmission, effectively reducing noise radiation to the surrounding environment.
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
This design effectively reduces mechanical and airflow noise, enhancing the quiet performance and in-vehicle comfort experience by suppressing resonance and outward sound transmission.
Implementation Method 1
the second housing is made of a flexible material... effectively buffering the vibration generated during the operation of the air pump assembly
Implementation Method 2
the flexible second housing has a certain absorption and blocking effect on the air disturbance sound and mechanical noise generated by the air pump
Implementation Method 3
reduces the resonance and outward transmission of the sound in the first housing
Data Source
AI summary
Disclosed is a vehicle-mounted aromatherapy diffuser, including an aromatherapy body, wherein the aromatherapy body includes a first housing and an atomization mechanism, the atomization mechanism is mounted on the first housing, and the aromatherapy body is provided with a mounting groove; and an air pump body, wherein the air pump body is arranged in the mounting groove, the air pump body includes an air pump assembly, a second housing and a third housing, the second housing and the third housing are mutually buckled to form an mounting space, the air pump assembly is arranged in the mounting space and is communicated with the atomization mechanism, and the second housing is made of a flexible material. This ensures a stable connection between the air pump and the atomization mechanism while effectively buffering the vibration generated during the operation of the air pump assembly and reducing the rigid conduction path.