A condensate pump assembly

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Solution Overview

Problem

Existing condensate pump assemblies face challenges such as the need for multiple versions or fasteners to accommodate different installation sites, difficulty in removing the pump due to stiff discharge lines, and limited cooling options due to proximity to liquids.

Innovation Solution

The condensate pump assembly features a housing with adjustable clips that can be mounted to various external elements, a removable lower section for easy cleaning, and an outlet assembly with a separate locking element for easier disconnection from discharge lines. Additionally, the design includes a lid with fins to enhance air flow and cooling of electrical components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple versions of the pump or range of fasteners are included to account for different installation sites, then adaptability to different installation sites is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improveadaptability to different installation sitesVSAvoidcomplexity of having multiple pump versions
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The mounting clip is designed with a universal structure that can accommodate different installation sites. The clip includes a first mounting portion for wall mounting and a second mounting portion for duct mounting, allowing a single pump design to be installed in multiple locations without requiring different pump versions.

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

Solution Approach 2:

The mounting clip incorporates a movable element that can transition between different mounting configurations. The dynamic design allows the clip to adapt its mounting portion based on the installation site, enabling versatility without requiring multiple static pump versions.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the discharge line is made stiff for durability, then reliability is improved, but ease of operation during removal deteriorates

Engineering Contradiction:
Improvedurability of discharge lineVSAvoidease of removal of pump
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The outlet assembly is segmented into separate components: the discharge line connection portion and the pump body connection portion. This segmentation allows the discharge line to remain stiff for durability while enabling independent removal of the outlet assembly from the pump body without requiring twisting of the discharge line.

Inventive Principle:
Principle #1Segmentation

3Temperature

If large openings are provided for cooling electrical components, then temperature control is improved, but protection from liquid ingress deteriorates

Engineering Contradiction:
Improvecooling of electrical componentsVSAvoidrisk of water reaching electrical components
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The pump housing incorporates a flexible or sealed barrier structure that allows thermal management while preventing liquid ingress. The design uses sealed pathways or thermal conductive materials that can transfer heat from electrical components to the housing without requiring large openings that would allow water to reach the components.

Inventive Principle:
Principle #30Flexible shells and thin films

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 design allows for versatile installation on different sites without the need for multiple pump versions, simplifies the removal process by reducing the strain on installers, and effectively cools electrical components to increase the pump's duty cycle.

Implementation Method 1

a lid with fins to enhance air flow and cooling of electrical components

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP4215749B1A condensate pump assembly
Publication Date: 2025.04.30 ASPEN PUMPS LIMITED
  • EP4215749B1 patent drawingFigure 1~2
  • EP4215749B1 patent drawingFigure 3~4
  • EP4215749B1 patent drawingFigure 5~6C

AI summary

A condensate pump assembly comprising: a housing having an inlet port, a reservoir arranged to receive liquid through the inlet port, and an outlet port having an outlet assembly mounted thereto, a pump arranged to pump liquid from reservoir to the liquid outlet assembly, and a pair of clips releasably connectable to the housing at a first pair of mounting portions and a second pair of mounting portions, wherein each of the pair of clips has a first portion for connecting to a first external element and a second portion for connecting to a second external element, wherein the pair of clips are configured to mount the housing to the first external element when connected to the first pair of mounting portions, and wherein the pair of clips are configured to mount the housing to the second external element when connected to the second pair of mounting portions.