Discharge Vane Control for Fast Cooling in High-Ceilinged Rooms
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Solution Overview
Problem
Conventional air conditioners mounted at high heights in high-ceilinged rooms struggle to rapidly and efficiently cool occupied zones while minimizing power consumption.
Innovation Solution
The air conditioner employs a method involving a power wind mode followed by a strong wind mode, with the discharge vane rotating within specific angle ranges and speeds, controlled by a vane motor, to optimize cooling and reduce energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the air conditioner is mounted at high height in a high-ceilinged room, then the air conditioner can cover the entire room space, but the cooling speed to the occupied zone becomes slow
Solution Approach 1:
The discharge vane is designed to dynamically change its discharge angle based on operational phase. During pre-cooling, the vane directs air at a steeper downward angle to rapidly cool the occupied zone. During subsequent cooling, the angle adjusts to distribute air more uniformly throughout the entire room space, thus achieving both fast localized cooling and comprehensive coverage.
Solution Approach 2:
The system changes the discharge angle parameter of the air flow based on the cooling stage. In the first stage, a smaller discharge angle (steeper downward direction) is used to target the occupied zone directly. In the second stage, the discharge angle is increased to distribute cooling across the full room volume, resolving the contradiction between speed and coverage.
2Area of stationary object
If conventional cooling methods are used in high-ceilinged rooms, then the entire room can be cooled, but the power consumption increases
Solution Approach 1:
The system performs preliminary action by first rapidly cooling the occupied zone where people are present using directed air flow at a specific angle. This preliminary cooling of the critical area reduces the overall cooling load required for the rest of the room, thereby reducing total power consumption while still achieving comprehensive cooling coverage.
Solution Approach 2:
The dynamic adjustment of discharge vane angle optimizes air distribution efficiency. By directing air flow more steeply downward during pre-cooling, the system maximizes cooling effectiveness in the occupied zone with less energy input, reducing overall power consumption while maintaining full room coverage.
3Speed
If the discharge vane swings rapidly to cool the occupied zone, then the cooling speed increases, but the power consumption increases
Solution Approach 1:
The system applies partial action by focusing cooling effort primarily on the occupied zone rather than uniformly cooling the entire room volume. By directing air flow selectively at a steeper angle to target the specific area where people are present, the system achieves fast cooling of the critical zone without the excessive energy consumption required for uniform whole-room cooling.
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 approach allows for rapid cooling of occupied zones with reduced power consumption, as demonstrated by shorter cooling times and lower energy usage compared to traditional methods.
Implementation Method 1
an air conditioner including an indoor unit and an outdoor unit, wherein the indoor unit includes a casing having an air suction port and an air discharge port, an indoor heat exchanger disposed in the casing, a fan disposed in the casing
Implementation Method 2
an indoor heat exchanger disposed in the casing
Implementation Method 3
a discharge vane for adjusting upward and downward wind directions of air discharged through the air discharge port, and a vane motor for rotating the discharge vane
Implementation Method 4
a vane motor for rotating the discharge vane
Data Source
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AI summary
An operation method of an air conditioner is disclosed. The operation method includes performing a cooling operation in a power wind mode selected as a wind quantity mode and swinging a discharge vane (12) within an angle range of 32 to 64 degrees from a maximum opening angle (P2) as a first step(S1, S2, S3, S4), and performing the cooling operation in a strong wind mode having lower intensity of wind than the power wind mode selected as the wind quantity mode as a second step (S5, S6), the second step (S5, S6)being executed after the first step (S1, S2, S3, S4) In a case in which the air conditioner is mounted at a high height in a high-ceilinged room, it is possible to rapidly cool an occupied zone of the room with the minimum power consumption and to prevent the occupied zone of the room from being excessively cooled.