Indoor Airflow Control for Independent Air Cleaning Modes
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Solution Overview
Problem
Conventional air conditioners cannot independently vary the air volume flow rate in air cleaning mode, which is dependent on the flow rate in heating or cooling mode, limiting user control and efficiency.
Innovation Solution
An air conditioner with a variable air volume control device that includes a blower and a controller to adjust the air volume flow rate independently in air cleaning mode, allowing for separate control from heating or cooling mode operations, using multiple variable air volume control devices and blower motor control lines to achieve this.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the air volume flow rate in air cleaning mode is dependent on the flow rate in heating or cooling mode, then the system structure remains simple, but the user cannot independently control the air volume flow rate in air cleaning mode
Solution Approach 1:
The patent applies dynamics by making the air volume flow rate controllable and adjustable during operation. Specifically, the air volume flow rate in air cleaning mode is made independently variable through control of the blower motor speed, allowing the system to adapt to different user needs (quiet operation vs. fast cleaning) without changing the physical structure.
Solution Approach 2:
The patent changes the operational parameter of air volume flow rate to be independently adjustable in air cleaning mode. By decoupling the air volume control from the heating/cooling mode dependency and enabling separate control through blower motor speed adjustment, the system allows parameter optimization for air cleaning specific requirements without structural modification.
2Productivity
If the air volume flow rate is increased to increase cleaning speed, then the air cleaning efficiency improves, but the noise level increases
Solution Approach 1:
The system dynamically adjusts the blower motor speed to match user requirements. Users can select between high-speed operation for rapid air cleaning and low-speed operation for quiet environments, allowing the system to optimize between productivity and noise based on real-time needs rather than operating at fixed speed.
Solution Approach 2:
The system enables periodic alternation between different operational states (high speed/low speed) based on user needs. The blower motor can be switched between different speed levels to accommodate varying requirements for cleaning speed versus noise reduction throughout the operation period.
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
Enables independent adjustment of air volume flow rate in air cleaning mode, reducing noise or increasing cleaning speed as needed, without significant structural changes, and prevents additional air cleaner purchases by allowing flexible operation within existing air conditioner structures.
Implementation Method 1
a blower (120) placed in the indoor unit main body and blowing air toward the main outlet (111)
Implementation Method 2
a controller (180) adjusting a second discharge rate of air in an air cleaning mode independently of a first air volume flow rate in a heating or cooling mode
Data Source
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AI summary
Provided is an air conditioner including a variable air volume control device. The air conditioner includes: an indoor unit main body including a main outlet through which air is discharged; a blower placed in the indoor unit main body and blowing air toward the main outlet; and a controller adjusting a second air volume flow rate in an air cleaning mode independently of a first air volume flow rate in a heating or cooling mode, wherein the second air volume flow rate is varied within a range different from a range in which the first air volume flow rate is varied.