Guide Robot Cooling Fan Air Circulation Path Design

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Solution Overview

Problem

Existing guidance robots face challenges in efficiently cooling electronic components due to limited air circulation and the need for separate heat-dissipating bodies, which complicates assembly and reduces design aesthetics.

Innovation Solution

A guidance robot design that utilizes air cooling by incorporating rotating components and strategically placed cooling fans to create an internal air circulation path, eliminating the need for separate heat sinks and allowing for selective air flow path control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If heat-dissipating bodies (heat sinks) are installed inside or outside the robot, then heat dissipation efficiency is improved, but device complexity and assembly difficulty increase

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidassembly complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent combines the cooling fan and heat dissipation structure into an integrated cooling assembly. The cooling fan is mounted on the rear wall of the housing, and the heat dissipation fins are directly formed as part of the housing structure, eliminating the need for separate heat sink components and reducing assembly complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The rear wall of the housing serves multiple functions: it acts as a structural component of the housing, a mounting surface for the cooling fan, and a heat dissipation surface through the integrated fins. This multi-functionality reduces the number of separate components needed.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Temperature

If heat-dissipating bodies are installed, then heat dissipation efficiency is improved, but manufacturing cost and unit price increase

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidmanufacturing cost
Core Design Contradiction:
TemperatureVSEase of manufacture

Solution Approach 1:

The heat dissipation fins are directly formed as an integral part of the housing structure through injection molding, eliminating the need for separate heat sink components and their associated manufacturing and assembly costs.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The housing structure serves dual purposes: providing mechanical protection for internal components and acting as a heat dissipation radiator through the integrated fins, thereby eliminating the need for additional heat sink components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Shape

If the robot structure is designed with smooth connections for aesthetic purposes, then design quality is improved, but air circulation gaps are reduced, worsening heat dissipation

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidheat dissipation
Core Design Contradiction:
ShapeVSTemperature

Solution Approach 1:

The housing features localized heat dissipation fins on the rear wall that provide necessary air circulation gaps specifically in the cooling region, while the rest of the housing maintains smooth connections for aesthetic purposes. This localized approach allows both aesthetic quality and heat dissipation functionality to coexist.

Inventive Principle:
Principle #3Local quality

4Volume of moving object

If electronic components are densely arranged to reduce robot size, then robot compactness is improved, but heat generation increases, worsening heat dissipation challenges

Engineering Contradiction:
Improverobot sizeVSAvoidheat generation
Core Design Contradiction:
Volume of moving objectVSTemperature

Solution Approach 1:

The patent uses a cooling fan to create forced air circulation through the housing, drawing cool air in through front gaps and expelling hot air through rear gaps. This pneumatic cooling system effectively manages the heat generated by densely arranged electronic components without requiring increased robot size.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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 solution effectively cools electronic components without additional heat sinks, simplifies the cooling process, reduces unit costs, and maintains a sleek design aesthetic while improving heat dissipation efficiency.

Implementation Method 1

a cooling fan (103a, 103b) disposed in the upper module (10) and configured to move air through the electronic component

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentUS10834845B2Guide robot
Publication Date: 2020.11.10 LG ELECTRONICS INC
  • US10834845B2 patent drawing
  • US10834845B2 patent drawing
  • US10834845B2 patent drawing

AI summary

A guidance robot according to an embodiment of the present disclosure includes a display, a head case configured to be provided to be capable of rotating, an upper case configured to couple to the display and the head case, the upper case being configured to receive an electronic component and a cooling fan therein, and a lower case configured to be located on a lower side of the upper case, the lower case being configured to locate a wheel and a motor therein. In addition, when the cooling fan is driven, outside air is suctioned through a gap between a lower end portion of the head case and an upper-end portion of the upper case, and the suctioned air passes through the electronic component and then is discharged to the outside through the gap between the lower end portion of the upper case and the upper-end portion of the lower case.