A condensation type laundry dryer machine
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Solution Overview
Problem
The existing condensation type laundry dryer machines face issues with poor dimensional stability and user inconvenience due to the use of plastic materials in the condenser heads, which degrade at operating temperatures, affecting the reliability and ease of maintenance.
Innovation Solution
A hermetically sealed heat exchanger circuit made of metal materials with a secure mechanical connection to prevent user removal, using screws or bolts for scheduled maintenance by skilled personnel, and additional filters for lint prevention, eliminating the need for plastic materials in the condenser heads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If plastic materials are used in condenser heads for easy removal and sealing, then ease of operation is improved, but reliability deteriorates due to poor dimensional stability at operating temperatures
Solution Approach 1:
The patent changes the material parameter from plastic to metal (aluminum or stainless steel), which fundamentally alters the dimensional stability characteristic at operating temperatures while maintaining the removable design through appropriate mechanical connection features
Solution Approach 2:
The patent employs metal materials (aluminum or stainless steel) for condenser heads that combine dimensional stability at high temperatures with manufacturable sealing and retaining features, creating a composite solution that addresses both reliability and ease of operation
2Ease of repair
If condenser is made removable for cleaning purposes, then ease of repair is improved, but device complexity increases due to sealing devices and coupling mechanisms
Solution Approach 1:
The patent divides the condenser into separable components (condenser body with heads) that can be independently removed and cleaned, simplifying maintenance while using straightforward mechanical retention features rather than complex sealing systems
Solution Approach 2:
The patent extracts the condenser as a removable module from the dryer system, allowing it to be taken out for cleaning and maintenance while using simple retaining hooks and mounting brackets rather than complex sealed couplings
3Ease of manufacture
If plastic heads are used with gluing for condenser assembly, then ease of manufacture is improved, but strength deteriorates due to poor dimensional resistance at operating temperatures
Solution Approach 1:
The patent changes the material parameter from plastic to metal, which fundamentally improves dimensional resistance at operating temperatures while maintaining manufacturability through standard metalworking processes for forming heads and attaching tube bundles
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 provides dimensional stability at high temperatures, reduces maintenance complexity, and enhances user safety while maintaining energy efficiency by preventing lint obstructions and improving the overall reliability of the condenser system.
Implementation Method 1
a condenser (7) located at the bottom (8) of the machine (2), for condensing a flow of moist air coming from the compartment (1)
Implementation Method 2
a heater (4), for heating said air flow
Implementation Method 3
for condensing a flow of moist air coming from the compartment (1)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a condensation type laundry dryer machine (2) comprising a drum (1) in which the laundry to be dried is placed, a bottom wall (8), a first conduit (3) for conveying a flow of hot air toward said laundry (4) contained in the drum (1), a heater (4) for heating said air flow, a first motorized generator (5) for generating said air flow, a second conduit (6) for collecting the flow of moist air from the drum (1) and convey it toward a condenser (7), a first filter (25) placed in said conduit (6) upstream from said condenser (7) for filtering said moist air from the drum (1). The machine is characterized in that said condenser (7) is a heat exchanger made of a metal material, and is located in a housing (12) formed in the lower portion of the laundry dryer machine, said condenser (7) being inclined at an angle (α) relative to the plane defined by the bottom wall (9) of the machine (2) and comprising connector means for mechanically connecting said heat exchanger (7) to said housing (12).