Dryer Dehumidifier Nozzle Cleaning for Heat Exchanger Lint Control
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Solution Overview
Problem
Existing dehumidifying apparatuses in dryers face issues with lint accumulation on heat exchangers, leading to reduced drying performance and heat exchange efficiency due to incomplete sealing and lack of effective filtration methods.
Innovation Solution
A dehumidifying apparatus with an injection nozzle system that injects a jet of water or gas through injection holes to separate and remove lint from the air and surface of the heat exchanger, preventing accumulation and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a screen filter or butterfly filter is installed to filter lint, then lint filtration is provided, but lint leaks through due to incomplete sealing between different materials
Solution Approach 1:
The patent applies homogeneity by making the filter installation portion and the screen filter body both formed of the same plastic material. This eliminates the sealing problem caused by different materials (steel and plastic) having different expansion coefficients, thereby preventing lint leakage while maintaining effective filtration.
2Device complexity
If lint is not filtered effectively, then the structure remains simple, but lint accumulates on the heat exchanger surface reducing heat exchange efficiency
Solution Approach 1:
The patent applies preliminary action by installing the screen filter with complete sealing before lint can accumulate on the heat exchanger. This preventive filtration approach removes lint from the air flow in advance, preventing accumulation and maintaining heat exchange efficiency without requiring complex post-cleaning mechanisms.
3Device complexity
If no injection nozzle is used, then the structure is simpler, but lint accumulates on the heat exchanger surface
Solution Approach 1:
The patent applies self-service by using the existing air flow from the drum to drive the injection nozzle system. The air flow itself provides the energy to喷射 water or cleaning agent through the injection nozzle, enabling self-cleaning of the heat exchanger surface without requiring external power sources or complex cleaning mechanisms.
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
The injection nozzle system effectively prevents lint accumulation and improves dehumidifying efficiency by ensuring smooth air circulation and heat exchange, maintaining the performance of the dryer.
Implementation Method 1
an injection nozzle portion disposed between the hot air supplying unit and the heat exchanger so as to inject a certain jet
Implementation Method 2
foreign substances (lint, etc.) contained in gas may be separated, when gas introduced into the dehumidifying apparatus from the drum by a jet passes through the jet
Data Source
AI summary
A dehumidifying apparatus for a dryer is provided that includes a case, a drum disposed inside the case that receives objects to be dried therein, and a hot air supplier that supplies hot air into the drum and dries the objects to be dried. The dehumidifying apparatus includes a heat exchanger that heat exchanges with air flowing from the drum, and an injection nozzle portion disposed between the hot air supplier and the heat exchanger so as to inject a certain jet. When gas introduced into the dehumidifying apparatus from the drum passes through the jet, foreign substances such as lint, contained in the gas may be separated, thereby preventing accumulation of the foreign substances on the dehumidifying apparatus.