Modular Washer-Dryer Cabinet Layout for Easier Heat Pump Maintenance
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Solution Overview
Problem
Washing machines with integrated drying functions have complex configurations that complicate maintenance, as the drying components are often intricately connected with the washing mechanism, making it difficult to access and maintain the heat pump components.
Innovation Solution
The design separates the laundry treatment device into two distinct cabinets: one for washing and another for housing the heated-dry-air supply device, allowing for easier assembly, maintenance, and customization, with the heated-dry-air supply device being optionally detachable and accessible from the outside for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the washing machine integrates a drying function with heat pump components, then the device can perform both washing and drying operations, but the configuration becomes complex and maintenance work becomes difficult
Solution Approach 1:
The patent divides the laundry treatment device into two separate cabinets: a first cabinet for washing operations and a second cabinet for drying operations. The heat pump components (evaporator, condenser, compressor, expansion valve) are exclusively located in the second cabinet, physically separating the washing and drying systems. This segmentation reduces overall configuration complexity while maintaining both washing and drying functionalities.
Solution Approach 2:
The patent extracts the heat pump components from the washing machine body and places them in a separate second cabinet. The drying function is taken out as an independent module that can be optionally installed. This extraction simplifies the washing machine's configuration while preserving the ability to perform drying operations when the second cabinet is present.
2Volume of moving object
If the heat pump components are integrated within the washing machine body, then the device structure is compact, but maintenance work becomes difficult due to inaccessibility
Solution Approach 1:
By segmenting the device into two separate cabinets with distinct functions, the patent makes the heat pump components in the second cabinet easily accessible from the outside for maintenance. The separation allows technicians to access and service the evaporator, condenser, compressor, and expansion valve without disassembling the washing machine body, thus improving ease of repair while maintaining a compact overall footprint through vertical stacking.
Solution Approach 2:
The patent introduces a circulation duct as an intermediary component that connects the first cabinet (washing) and second cabinet (drying). This duct system allows for efficient air circulation and heat transfer between the two cabinets while maintaining their physical separation, enabling both compactness and maintenance accessibility.
3Ease of repair
If the washing and drying components are separated into different cabinets, then maintenance convenience is improved, but the device configuration becomes more complex
Solution Approach 1:
The patent merges the washing and drying cabinets into a single integrated laundry treatment device that can function as one unified system. The circulation duct connects the two cabinets to enable heat recovery and air circulation, allowing the separated components to work together efficiently. This merging approach maintains maintenance convenience while reducing the perceived complexity by presenting a unified device interface to the user.
Solution Approach 2:
The second cabinet with heat pump components serves multiple functions: it acts as a drying chamber, a heat recovery unit, and an optional add-on module. The circulation duct serves dual purposes by both connecting the cabinets structurally and enabling thermal energy transfer. This multi-functionality reduces the need for additional separate components, thereby reducing overall complexity despite the cabinet separation.
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 enhances maintenance convenience and flexibility, allowing for efficient washing performance while simplifying the maintenance process by separating the washing and drying components, thus improving overall operational efficiency and user experience.
Implementation Method 1
an air supply device provided in the second space, the air supply device supplying dry hot air to the first space
Implementation Method 2
the heat pump components can easily be accessed for cleaning the fibers that get caught on the flow pipes and the fins of the heat exchangers like the evaporator and/or the compressor
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A laundry treatment device (10) is provided which includes a first space (100) for laundry treatment, a second space (200) formed separate from the first space (100), and an air supply device (220) provided in the second space (200), the air supply device (2220) supplying heated dry air to the first space (100).