Indoor unit of air conditioner and blade unit applied to same
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Solution Overview
Problem
Ceiling type air conditioners experience vibrations and noise due to the rotation of blades, especially when installed non-horizontally, as the direct connection between the motor and blade leads to misalignment and increased friction, resulting in unwanted noise and vibration.
Innovation Solution
Incorporating a buffer member with a restoring force, coupled with the blade and surrounding the rotation transfer member, which helps to absorb and redirect the rotational force, allowing the blade to rotate smoothly even when the unit is installed non-horizontally, thereby reducing vibrations and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the blade is directly connected to the motor, then the rotational force is efficiently transferred, but vibrations and noise are generated due to misalignment when installed non-horizontally
Solution Approach 1:
A buffer member is introduced as an intermediary component between the motor and the blade. This buffer member includes a rotating member that can rotate relative to the motor output shaft, and a blade that rotates relative to the rotating member. The intermediary structure allows for misalignment compensation while maintaining efficient power transfer, thereby reducing vibrations and noise caused by direct connection misalignment.
Solution Approach 2:
The patent employs dynamic elements including a rotating member that can rotate relative to the motor output shaft, and a blade that can rotate relative to the rotating member. This dynamic structure enables the system to adapt to non-horizontal installations by allowing relative motion that compensates for misalignment, reducing vibrations and noise while maintaining power transfer efficiency.
2Device complexity
If the blade is directly connected to the motor, then the structure is simple, but the blade cannot rotate smoothly when the unit is installed non-horizontally
Solution Approach 1:
The buffer member serves as an intermediary that facilitates smooth blade rotation. It includes a rotating member with a rotating shaft that can rotate relative to the motor output shaft, and a blade connected to the rotating member. This intermediary structure enables smooth rotation even in non-horizontal installations by accommodating misalignment through relative motion.
Solution Approach 2:
The patent introduces dynamic rotation capabilities at multiple levels: the rotating member rotates relative to the motor output shaft, and the blade rotates relative to the rotating member. This multi-level dynamic structure ensures smooth blade operation in non-horizontal installations while maintaining reasonable structural complexity.
3Adaptability or versatility
If the blade rotates in non-horizontal installation, then the air discharge direction can be adjusted, but friction increases causing noise and vibration
Solution Approach 1:
The buffer member acts as an intermediary that reduces friction between the motor and blade during rotation in non-horizontal installations. The rotating member within the buffer member can rotate relative to the motor output shaft, and the blade can rotate relative to the rotating member, creating a multi-stage rotation system that minimizes direct friction contact and reduces noise and vibration.
Solution Approach 2:
The patent employs dynamic rotation mechanisms that allow the rotating member and blade to adjust their relative positions during operation. This dynamic adaptation reduces friction when the unit is installed non-horizontally, enabling smooth blade rotation and reducing noise and vibration while maintaining installation flexibility.
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 effectively prevents vibrations and noise generated by the motor's rotational force, enabling the blade to rotate effortlessly in the outlet, even when the indoor unit is not installed horizontally, enhancing the operational stability and quietness of the air conditioner.
Implementation Method 1
a buffer member made of a material having a restoring force, coupled with the blade at one end, and surrounding a part of the rotation transfer member
Data Source
AI summary
Disclosed are provided indoor unit of an air conditioner. A present invention is to provide an indoor unit of an air conditioner having an improved structure for preventing vibrations and noise of a blade due to vibrations of a motor when the blade rotates, and a blade unit applied to the indoor unit. The indoor unit of the air conditioner includes a main body including an outlet, and a blade unit configured to adjust a direction in which air discharged from the outlet is discharged, wherein the blade unit comprises, a blade coupled with the main body to be rotatable in the outlet, a motor including a rotation transfer member, and configured to generate a rotatory force that is transferred to the blade; and a buffer member made of a material having a restoring force, coupled with the blade at one end, and surrounding a part of the rotation transfer member.