Integrated pressure condensing boiler

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Solution Overview

Problem

Existing pressure condensing boilers require additional condensing heat exchange equipment, leading to complex structures and high manufacturing, installation, and application costs, while also limiting thermal efficiency.

Innovation Solution

An integrated pressure condensing boiler design that incorporates a pressure-bearing housing, heat-exchange furnace, and cooling tube groups, utilizing countercurrent heat transfer principles to enhance flue gas heat transfer and convective heat transfer coefficients, eliminating the need for external condensing equipment and reducing steel consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If additional condensing heat exchange equipment is added to pressure condensing boilers, then thermal efficiency is improved, but device complexity and manufacturing costs increase

Engineering Contradiction:

Improvethermal efficiencyVSAvoidstructure complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent merges the condensing heat exchange function with the existing boiler structure by integrating cooling tube groups directly into the heat-exchange furnace. This eliminates the need for separate external condensing equipment while achieving thermal efficiency above 100%, as the cooling tubes utilize flue gas heat to condense water and preheat the heat-exchange medium in a single integrated system.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The heat-exchange furnace serves multiple functions simultaneously: it acts as the combustion chamber, the primary heat exchange zone, and the condensing heat exchanger through the integrated cooling tube groups. This multi-functionality reduces the number of separate components needed while achieving both high thermal efficiency and structural simplification.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Loss of energy

If additional condensing heat exchange equipment is added to pressure condensing boilers, then thermal efficiency is improved, but manufacturing and installation costs increase

Engineering Contradiction:

Improvethermal efficiencyVSAvoidmanufacturing cost

Core Design Contradiction:

Loss of energyVSEase of manufacture

Solution Approach 1:

The patent combines the condensing heat exchange function with the existing boiler structure by integrating cooling tube groups directly into the heat-exchange furnace. This eliminates the need for separate external condensing equipment while achieving thermal efficiency above 100%, thereby reducing manufacturing and installation costs through a unified design.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of manufacture

If steel consumption is reduced in boiler construction, then manufacturing costs decrease, but structural strength and pressure-bearing capacity may be compromised

Engineering Contradiction:

Improvesteel consumptionVSAvoidpressure-bearing capacity

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The patent integrates the condensing heat exchange function into the existing pressure-bearing structure, eliminating the need for additional external equipment that would require extra steel. The cooling tube groups are positioned within the existing heat-exchange furnace, maintaining pressure-bearing capacity while reducing overall steel consumption and manufacturing costs.

Inventive Principle:

Principle #5Merging (Combining)

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 integrated design achieves thermal efficiencies above 100% with reduced steel consumption and lower costs, meeting energy efficiency standards without additional condensing heat exchange equipment, and simplifying the structure for direct application.

Implementation Method 1

Heat-exchange medium flows from bottom to top in the pressure-bearing housing and in the cooling tube groups, and exchanges heat with high-temperature flue gas flowing from top to bottom in the heat-exchange furnace, thus achieving a counterflow heat exchanging

Methodology Applied

Scientific EffectCountercurrent heat transfer: Heat Exchanger

Implementation Method 2

In each heat-exchange chamber, the high-temperature flue gas laterally scours the cooling tube group arranged in the heat-exchange chamber

Methodology Applied

Scientific EffectConvective heat transfer: Convection

Data Source

PatentUS12018860B2Integrated pressure condensing boiler

Publication Date: 2024.06.25 LANGFANG JINHUA BOILER

AI summary

An integrated pressure condensing boiler is provided which relates to the technical field of boilers. The integrated pressure condensing boiler includes a pressure-bearing housing, a heat-exchange furnace arranged in the pressure-bearing housing, a combustion chamber communicating with the heat-exchange furnace and cooling tube groups fixed in the heat-exchange furnace. Heat-exchange medium flows from bottom to top in the pressure-bearing housing and in the cooling tube groups, and exchanges heat with high-temperature flue gas flowing from top to bottom in the heat-exchange furnace, thus achieving a counterflow heat exchanging. The heat-exchange furnace includes a multi-stage heat-exchange chamber with each heat-exchange chamber being cylindrical. The heat-exchange chambers are arranged in sequence from top to bottom to achieve a flue gas diffusing manner that high-temperature flue gas diffuses from center part to periphery and then gathers from periphery to center part.