Blower With Segmented Discharge Ports And Single Motor Control

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Solution Overview

Problem

Conventional blowers require movement of the case or fan to adjust airflow direction, leading to excessive power consumption and noise due to vibration, while lacking in energy efficiency and control over airflow modes.

Innovation Solution

A blower design featuring a compact structure with an upper and lower case, auxiliary discharge ports, and a door system powered by a single motor to adjust airflow direction without changing the blower's position, allowing for various airflow modes and improved energy efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the case or fan is moved to adjust airflow direction, then the airflow direction can be changed, but excessive power is consumed and noise due to vibration occurs

Engineering Contradiction:

Improveairflow direction adjustmentVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The discharge opening is divided into multiple segments (first discharge opening and second discharge opening) that can be independently controlled. By selectively opening or closing each segment, the airflow direction can be adjusted without moving the entire case or fan, thereby reducing power consumption and vibration noise.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the case or fan is moved to adjust airflow direction, then the airflow direction can be changed, but noise due to vibration occurs

Engineering Contradiction:

Improveairflow direction adjustmentVSAvoidvibration noise

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

3Device complexity

If a single door motor controls multiple doors, then the control system is simplified, but the mechanism complexity increases

Engineering Contradiction:

Improvenumber of motorsVSAvoiddoor control

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

Multiple doors (first door and second door) are controlled by a single door motor through a mechanical transmission mechanism. This merging of control functions reduces the number of motors and simplifies the control system, while the transmission mechanism ensures synchronized operation of multiple doors.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

A mechanical transmission mechanism acts as an intermediary between the single door motor and multiple doors. This intermediary component translates the motor's rotational motion into coordinated opening and closing movements of multiple doors, simplifying control while managing mechanical complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4145001B1blower

Publication Date: 2024.08.14 LG ELECTRONICS INC

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AI summary

A blower includes: a lower case (120), which has a suction port (121), in which a fan (320) is disposed; an upper case having a first tower (220) and a second tower (230) which is disposed in an upper side of the lower case; a first discharge port (222) disposed in the first tower (220) and a second discharge port (232) disposed in the second tower (230), and a blowing space (S) between the two towers (220, 230); an auxiliary discharge port (211c) which is formed below the first discharge port (222) and the second discharge port (232) and discharges air into the blowing space (S).