Steam Generator Pre-Heat Chamber and Filter to Reduce Calcification

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Solution Overview

Problem

Prior art steam generators suffer from calcification build-up due to calcium carbonate in 'hard' water, leading to reduced performance and difficulty in cleaning, especially in boiler units, which are often hermetically sealed and hard to access.

Innovation Solution

A multi-stage water steaming configuration with a pre-heat chamber that raises water temperature below boiling to precipitate calcium carbonate, followed by a reusable filter to catch solid particulates before they reach the boiler, allowing for easier cleaning and prevention of calcification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a hermetically sealed boiler unit is used to prevent calcification, then boiler performance is maintained, but cleaning and maintenance become difficult

Engineering Contradiction:
Improveboiler performanceVSAvoidcleaning accessibility
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The patent applies preliminary action by installing a filter assembly in the water supply line before water enters the boiler. This filter captures calcium carbonate particles in advance, preventing them from reaching the boiler and forming scale. The filter is positioned upstream so that calcification is addressed before it can affect the boiler interior, maintaining performance while keeping the boiler sealed for easy cleaning.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a filter assembly is added to remove calcium carbonate, then calcification is reduced, but device complexity increases

Engineering Contradiction:
Improvecalcification preventionVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary filter assembly as a mediator between the water supply and the boiler. This filter acts as a intermediate component that captures calcium carbonate particles without requiring modification to the boiler itself. The filter assembly includes a filter element and housing that can be independently serviced, adding functionality while maintaining modular simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the water reservoir is made larger to increase steam generation capacity, then steam production increases, but unit weight increases

Engineering Contradiction:
Improvesteam generation capacityVSAvoidunit weight
Core Design Contradiction:
ProductivityVSWeight of moving object

Solution Approach 1:

The patent applies parameter changes by pre-heating water in a separate chamber before it enters the main boiler. This pre-heating process increases the temperature parameter of the water, allowing for more efficient steam generation. By raising the initial water temperature, the system achieves higher steam production capacity without needing to proportionally increase the water reservoir size, thereby controlling the weight increase.

Inventive Principle:
Principle #35Parameter changes

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 reduces calcification in the boiler, extends the lifespan of steam generator components, and prevents clogging, making the steam generator more efficient and user-friendly by allowing for easy filter maintenance.

Implementation Method 1

a pre-heat chamber that is controlled to heat incoming water to a temperature less than the boiling point of water

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

the pre-heat chamber is controlled to heat the water such that if the water contains a calcium compound, such as calcium carbonate, the calcium compound is caused to take a particulate form

Methodology Applied
Scientific EffectPrecipitation: Precipitation

Implementation Method 3

a filter assembly in fluid communication with the pre-heat chamber, the filter assembly including at least a removable particulate filter element

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 4

a boiler in fluid communication with the water pump, where the water pump is controlled to cause water to flow to the boiler, and where the boiler is controlled to boil water such that steam is produced

Methodology Applied
Scientific EffectBoiling: Boiling

Data Source

PatentUS11618992B2Steam generator with pre-heat chamber and filter
Publication Date: 2023.04.04 SPECTRUM BRANDS INC
  • US11618992B2 patent drawing
  • US11618992B2 patent drawing
  • US11618992B2 patent drawing

AI summary

A steam generator includes a pre-heat chamber configured to heat incoming water to a temperature less than the boiling point of water, where the pre-heat chamber is configured to heat the water such that if the water contains a calcium compound, the calcium compound is caused to take a particulate form. The steam generator also includes a filter assembly in fluid communication with the pre-heat chamber, the filter assembly including a removable particulate filter element, where the filter element is reusable and cleanable. The steam generator also includes a water pump in fluid communication with the filter assembly, and operative to cause water flow through the steam generator and a boiler in fluid communication with the water pump, where the water pump is configured to cause water to flow to the boiler, and where the boiler is configured to boil water such that steam is produced.