Integrated Boiler Condensate Siphon With Single-Float Pump Control

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Solution Overview

Problem

Current condensate removal units for boilers are bulky due to the need for multiple components, including a siphon device and an auxiliary tank, which increases production costs and requires two floaters for operation.

Innovation Solution

A compact condensate removal unit integrating a siphon device with a single floater that serves both as a safety element against fume passage and a device for operating the discharge pump, eliminating the need for an auxiliary tank and reducing the number of floaters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a siphon device and an auxiliary tank are used together, then condensate removal reliability is improved, but device complexity and volume increase

Engineering Contradiction:
Improvecondensate removal reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the siphon device and auxiliary tank into a single integrated unit. The siphon's hollow body serves as both the siphon chamber and the auxiliary tank, eliminating the need for separate components. The pump is directly integrated into the siphon structure, creating a compact unified system that maintains reliability while reducing complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The hollow body of the siphon device performs multiple functions: it serves as the siphon chamber for preventing fume escape, as the auxiliary tank for condensate storage, and as the housing for the discharge pump. This multi-functionality eliminates the need for separate dedicated components, reducing overall device complexity.

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

2Reliability

If two floaters are used (one for siphon, one for pump), then operational reliability is improved, but manufacturing cost increases

Engineering Contradiction:
Improveoperational reliabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

A single floater is designed to perform multiple functions: it acts as the safety element for the siphon device and simultaneously controls the discharge pump operation. The floater's position changes trigger both the siphon activation and pump control, eliminating the need for a second separate floater and reducing manufacturing costs.

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

Solution Approach 2:

The control functions for both the siphon device and discharge pump are merged into a single floater mechanism. The floater's movement simultaneously controls both systems, consolidating what would traditionally require two separate floaters into one component, thereby reducing production costs.

Inventive Principle:
Principle #5Merging (Combining)

3Quantity of substance

If an auxiliary tank is added, then condensate collection capacity is improved, but device volume increases

Engineering Contradiction:
Improvecondensate collection capacityVSAvoiddevice volume
Core Design Contradiction:
Quantity of substanceVSVolume of moving object

Solution Approach 1:

The auxiliary tank function is merged with the siphon device's hollow body. The same chamber that contains the siphon mechanism also serves as the condensate collection tank, eliminating the need for an additional separate tank and thereby reducing the overall device volume while maintaining collection capacity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The pump is nested within the hollow body of the siphon device, and the condensate collection space is integrated within the same structure. This nesting arrangement allows multiple functions to coexist in a compact configuration, maximizing space utilization and minimizing overall device volume.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 results in a more compact and cost-effective solution that ensures efficient condensate removal while preventing fume escape and ensuring the pump operates only when necessary, avoiding dry running.

Implementation Method 1

a siphon to prevent the release of fumes from the condensate outlet

Methodology Applied
Scientific EffectSiphon effect: Syphon

Implementation Method 2

The hollow body comprises a first branch, to which a condensate inlet pipe is linked, and a second branch, hydraulically linked to a condensate outlet pipe

Methodology Applied
Scientific EffectHydraulic seal: Surface Tension

Implementation Method 3

the inlet branch of the siphon device is provided with a floater which is intended to prevent the passage of fumes to the environment

Methodology Applied
Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 4

pumping means for discharging the condensate

Methodology Applied
Scientific EffectPumping: Pump

Implementation Method 5

the water discharge line can be found on the surface above the one on which the boiler is installed. A pump must therefore be installed in order to pump the condensate to a height of 3÷5 m

Methodology Applied
Scientific EffectGravitational force: Gravitation

Data Source

PatentEP2853840B1Condensate removal unit in a boiler
Publication Date: 2016.11.02 RIELLO
  • EP2853840B1 patent drawingFigure 1
  • EP2853840B1 patent drawingFigure 2
  • EP2853840B1 patent drawingFigure 3

AI summary

A condensate removal unit (10) in a boiler (100). The removal unit (10) comprises: (f1) a siphon (13) adapted to prevent the release of fumes from the condensate outlet; (f2) a condensate collecting device (13); (f3) a pump (41) for discharging the condensate itself; and (f4) a control device (30) of the pump (41) according to the condensate level in the collecting device (13). The removal unit is characterized in that the siphon (13), the condensate collecting device (13) and the pump (41) are integrated in a single compact apparatus.