Clothing dryer
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Solution Overview
Problem
Condensation type clothing dryers using heat pumps experience high air flow resistance and noise due to the complex shape of the air flow path.
Innovation Solution
The clothing dryer design includes a simplified air flow path with a fan motor located in the duct, where the air outlet is eccentrically positioned closer to the condenser than the first motor, and a motor bracket with heat dissipation ports to reduce noise and vibration, allowing for improved air circulation and reduced flow path resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex air flow path is used in condensation type dryers, then the dryer can accommodate heat pump components (evaporator and condenser), but air flow resistance increases and noise occurs
Solution Approach 1:
The air flow path is divided into multiple independent ducts: a first duct for air intake, a second duct for air discharge, and a third duct connecting them. This segmentation allows each duct to have a simple, straight structure while collectively accommodating the heat pump components, thereby reducing air flow resistance and energy loss.
Solution Approach 2:
The patent rearranges the spatial layout of components by positioning the evaporator and condenser in different spatial dimensions and connecting them through ducts that extend in multiple directions. This dimensional reorganization creates a simplified air flow path that reduces resistance while still accommodating all necessary components.
2Adaptability or versatility
If a complex air flow path is used in condensation type dryers, then the dryer can accommodate heat pump components, but noise increases
Solution Approach 1:
By segmenting the air flow path into separate ducts for intake and discharge, the patent eliminates turbulent flow at sharp corners and connections, which are major noise sources. Each duct maintains a simple, straight structure that promotes laminar flow and reduces noise generation.
3Device complexity
If the air outlet is positioned closer to the first motor, then the structure is simpler, but the fan motor installation has spatial limitations and flow path resistance increases
Solution Approach 1:
The patent positions the air outlet in a different spatial dimension relative to the motors, specifically closer to the condenser rather than the first motor. The third duct connects the first and second ducts while accommodating the fan motor in an optimized location, providing installation flexibility without increasing overall structural complexity.
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 design reduces air flow loss and noise by simplifying the air flow path and optimizing the placement of the fan motor and heat dissipation components, enhancing the efficiency and operation of the clothing dryer.
Implementation Method 1
a heat pump configured to heat air supplied into the drum and including an evaporator, a compressor, a condenser, and an expansion valve
Implementation Method 2
a second motor disposed in the flow path and configured to drive a fan for flowing air
Implementation Method 3
the duct may include a first heat dissipation port configured to dissipate heat of the second motor
Data Source
AI summary
Disclosed herein is a clothing dryer. The clothing dryer includes a main body, a drum rotatably installed in the main body, a first motor configured to transmit a rotational force to the drum, a heat pump configured to heat air supplied to the drum and including an evaporator, a compressor, a condenser, and an expansion valve, a flow path connected to the drum to circulate air; and a second motor disposed in the flow path and configured to drive a fan to flow air.