Rotatable Air Discharge Structure for Compact Air Conditioners

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Solution Overview

Problem

Conventional air conditioners face challenges in compact design due to complex internal structures, making it difficult to optimize space utilization and maintenance accessibility.

Innovation Solution

The air conditioner incorporates a cross flow fan mounted between the discharge body and heat exchanger, with a rotation mechanism and fan motor allowing independent control of rotational speeds and directions, enabling compact design and easy maintenance by separating the cross flow fan and fan motor for service access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a rotatable discharge body with blower and heat exchanger is disposed at the upper portion of the air conditioner, then the air discharge direction can be adjusted, but the internal structure becomes complicated and the main body cannot become compact

Engineering Contradiction:
Improveair discharge direction adjustmentVSAvoidinternal structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the air conditioner into distinct functional modules: a fixed main body containing the heat exchanger and blower, and a separate rotatable discharge body. This segmentation allows the discharge body to be independently rotated to adjust air discharge direction without complicating the main body structure, as the rotation mechanism is isolated to the discharge body portion.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts the rotation mechanism from the main body structure and places it only in the discharge body. This extraction allows the main body to remain compact and simple while the discharge body provides the adaptability for direction adjustment through its independent rotation capability.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If the discharge body is disposed to be ascendable/descendable, then air can be discharged at elevated positions, but the internal structure becomes complicated

Engineering Contradiction:
Improvedischarge position adjustmentVSAvoidinternal structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the position adjustment function from the main body by providing a rotatable discharge body that can be independently positioned. The rotation mechanism is located only in the discharge body, allowing position adjustment without adding complexity to the main body's internal structure.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If multiple components are integrated in the main body, then functionality is enhanced, but maintenance accessibility becomes difficult

Engineering Contradiction:
Improvesystem functionalityVSAvoidmaintenance accessibility
Core Design Contradiction:
Adaptability or versatilityVSEase of repair

Solution Approach 1:

The patent segments the air conditioner into a main body and a discharge body that can be separated. The discharge body, containing the rotation mechanism, can be detached from the main body, allowing easy access to the blower and heat exchanger for maintenance while preserving all system functionalities.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts the discharge body as a separable module from the main body. This extraction enables maintenance personnel to easily remove and service components in the main body without disassembling the entire unit, while the discharge body can be independently maintained or replaced.

Inventive Principle:
Principle #2Taking out (Extraction)

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 configuration enhances space utilization, allows for independent control of air discharge directions and volumes, and simplifies maintenance by enabling the separation and servicing of the cross flow fan and fan motor, resulting in a more compact and efficient air conditioning system.

Implementation Method 1

a cross flow fan rotatably positioned in the discharge passage, the cross flow fan being disposed vertically long in the discharge passage

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 2

a fan motor having a vertical rotational shaft for rotating the cross flow fan

Methodology Applied
Scientific EffectElectromagnetic conversion:

Implementation Method 3

a heat exchanger in which air sucked into the air suction hole is heat-exchanged

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS10422539B2Air conditioner
Publication Date: 2019.09.24 LG ELECTRONICS INC
  • US10422539B2 patent drawing
  • US10422539B2 patent drawing
  • US10422539B2 patent drawing

AI summary

An air conditioner includes: a suction body having an air suction hole formed therein; a heat exchanger in which air sucked into the air suction hole is heat-exchanged; and a pair of blow discharge units through which the air heat-exchanged in the heat exchanger is passed and discharged. In the air conditioner, each of the pair of blow discharge units includes: a discharge body in which an air inflow hole and an air discharge hole are formed to be spaced apart from each other, and a discharge passage is formed between the air inflow hole and the air discharge hole; a rotation mechanism for rotating the discharge body about a vertical center axis; a cross flow fan rotatably positioned in the discharge passage, the cross flow fan being disposed vertically long in the discharge passage; and a fan motor having a vertical rotational shaft for rotating the cross flow fan. When the cross flow fan is mounted between the discharge body and the heat exchanger, the air conditioner can become more compact, and the utilization of space between the discharge body and the heat exchanger can be enhanced.