Tumble Dryer Modular Heat Pump Unit for Simplified Maintenance
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Solution Overview
Problem
Existing tumble dryers face challenges in efficient maintenance procedures, as the heat pump components are not easily removable or replaceable, leading to difficulties in servicing and maintaining the appliance.
Innovation Solution
The heat pump unit, comprising a condenser, compressor, and evaporator, is designed to be removable as a single unit from the rear side of the tumble dryer housing, with a closed refrigerant loop and an expansion valve, and is enclosed in an insulating shell with wheels for easy movement and installation, allowing for centralized maintenance and improved energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the heat pump components (condenser, compressor, evaporator) are integrated into a single removable unit, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The heat pump system is segmented into a modular unit that can be removed as a complete assembly from the tumble dryer housing. This modular heat pump unit includes the condenser, compressor, and evaporator integrated together, allowing the entire assembly to be replaced as one component rather than servicing individual parts separately.
Solution Approach 2:
The condenser, compressor, and evaporator are merged into a single integrated heat pump unit that functions as one removable module. This combining of components simplifies maintenance by allowing the entire heat pump assembly to be replaced together, ensuring proper refrigerant loop integrity and reducing installation complexity.
2Ease of operation
If the heat pump unit is designed as a removable module, then ease of operation is improved, but manufacturing complexity increases
Solution Approach 1:
The heat pump system is divided into a separate removable module that can be independently manufactured and then installed in the tumble dryer. This segmentation allows specialized manufacturing of the heat pump unit with precise refrigerant loop connections, while the main dryer body remains simpler to manufacture.
Solution Approach 2:
The heat pump unit is pre-assembled and pre-charged with refrigerant as a complete module before installation in the tumble dryer. This preliminary assembly ensures proper refrigerant loop configuration and component positioning are achieved during manufacturing of the modular unit, simplifying both manufacturing and installation processes.
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 configuration enables efficient maintenance and replacement of the heat pump unit, reducing downtime and improving energy efficiency by allowing the entire unit to be replaced at a central workshop, and simplifies the process of reassembling the dryer, ensuring quick return to operation.
Implementation Method 1
a compressor
Implementation Method 2
a condenser
Implementation Method 3
an evaporator
Implementation Method 4
a complete closed refrigerant loop
Implementation Method 5
The condenser the compressor, the evaporator and the expansion valve may be enclosed in a common insulating shell which provides for improved energy efficiency
Data Source
AI summary
The present disclosure relates to a tumble dryer (1) comprising a housing (2), a rotatable drum (11) in the housing being accessible from a front side (3) of the housing, and a fan arrangement (13) for producing a flow of process air through the drum. A heat pump is used for drying the process air before it enters the drum, the heat pump comprising a condenser (19), a compressor (17), and an evaporator (15). The condenser 19 the compressor (17), and the evaporator (15) are arranged as components in a heat pump unit (43), wherein the heat pump unit is removable from the remainder of the tumble dryer (1) through an opening in the rear side of the tumble dryer housing without separating the components. This facilitates for instance service of the tumble dryer.