Dryer Evaporator Flushing With a Gravity-Triggered Eccentric Bucket

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Solution Overview

Problem

Existing flushing devices for evaporators in dryers are complex in structure, require tedious control procedures, and rely on multiple electromagnetic valves and metering structures, leading to high costs and instability.

Innovation Solution

A flushing device utilizing an eccentric bucket that automatically overturns based on changes in water volume, eliminating the need for electromagnetic valves and complex control systems, with condensate water pipelines adjusting to ensure regular flushing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple electromagnetic valves and metering structures are used to control flushing liquid flow, then the flushing control precision is improved, but the device complexity and cost increase

Engineering Contradiction:
Improveflushing control precisionVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts and removes the complex electromagnetic valve control system and metering structures from the flushing device. Instead, it uses a simple water storage box that utilizes the dryer's existing condensate water collection function, eliminating the need for multiple electromagnetic valves and complex metering devices while maintaining adequate flushing control.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The water storage box automatically receives condensate water from the dryer's condenser through gravity flow, and automatically discharges water when the bucket overturns. This self-service mechanism eliminates the need for external electromagnetic valves and complex control systems, using the system's own operational characteristics to achieve flushing control.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If multiple electromagnetic valves and control procedures are used, then the flushing control precision is improved, but the reliability decreases due to more potential failure points

Engineering Contradiction:
Improveflushing control precisionVSAvoidsystem stability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

By removing multiple electromagnetic valves and complex control procedures, the patent eliminates numerous potential failure points. The simplified system with fewer moving parts and no electromagnetic components significantly improves reliability while maintaining adequate flushing control through the automatic overturning mechanism.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The automatic overturning mechanism uses the weight of water itself to trigger the flushing action, creating a self-regulating system that does not depend on external control signals or electromagnetic components. This self-service approach inherently improves reliability by eliminating control system failures.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If complex internal structures and control procedures are added, then the flushing function is improved, but the manufacturing cost increases

Engineering Contradiction:
Improveflushing functionVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent extracts the essential flushing function from the complex control systems and implements it through a simple water storage box that leverages the dryer's existing condensate collection capability. This approach maintains effective flushing functionality while dramatically reducing manufacturing costs by eliminating electromagnetic valves, metering structures, and complex control circuits.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The water storage box serves multiple functions: it collects condensate water from the condenser, stores the flushing liquid, and automatically dispenses water through overturning. By making this single component multi-functional, the patent eliminates the need for separate systems for water collection, storage, and dispensing, thereby reducing manufacturing cost while maintaining flushing effectiveness.

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

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 solution simplifies the flushing process, reduces failure rates, and lowers costs by eliminating the need for complex internal structures and electromagnetic valves, while ensuring regular and effective evaporator flushing.

Implementation Method 1

a center of gravity of the eccentric device changes along with the amount of water in the eccentric device, such that the eccentric device is turned over to pour the water into the evaporator for flushing

Methodology Applied
Scientific EffectGravitation: Gravitation

Data Source

PatentUS11352735B2Flushing device and method for an evaporator of dryer and dryer
Publication Date: 2022.06.07 CHONGQING HAIER WASHING MASCH CO LTD
  • US11352735B2 patent drawing

AI summary

The present disclosure provides a flushing device and method for an evaporator of dryer, and a dryer. The flushing device comprises an evaporator, a water storage box and a condensate water pan for collecting condensate water, wherein an eccentric bucket is arranged between the water storage box and the evaporator, a supporting structure is arranged at two symmetrical sides of a periphery of the eccentric bucket, the supporting structure enables the eccentric bucket to turn over along with a change in the center of gravity of the eccentric bucket, a pipeline for conveying condensate water to the eccentric bucket is arranged between the eccentric bucket and the condensate water pan, an opening of the eccentric bucket is arranged upwards, and after the eccentric bucket is turned over, the opening of the eccentric bucket is aligned with the evaporator, such that condensate water in the eccentric bucket flushes the evaporator.