Household device comprising a functional part mounted on a flat basis
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Solution Overview
Problem
Existing household appliances, such as clothes dryers, experience droning noises due to the stiff connection of compressors to the base, which prevents vibrations and introduces unwanted vibrations into the housing.
Innovation Solution
An anisotropic connection of the functional part, specifically the compressor, to the base is achieved using elastic support bodies that are anisotropically elastic with respect to their associated body axis, allowing for isotropic oscillation with respect to the system axis, thereby absorbing vibrations and distributing them uniformly across the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the compressor is connected to the base via a stiff connection, then the compressor is firmly fixed and prevents movements, but vibrations are introduced into the base and housing causing droning noises
Solution Approach 1:
The patent introduces elastic support bodies as intermediary elements between the compressor and the base. These support bodies are made of elastic material that can deform, allowing the compressor to be firmly mounted while absorbing vibrations before they reach the base and housing, thus eliminating the need for a purely stiff connection.
2Object-generated harmful factors
If the compressor is connected via elastic elements, then vibrations are absorbed, but the connection becomes too soft and allows excessive movements
Solution Approach 1:
The patent employs composite elastic support bodies that combine different materials or structural features to achieve optimal vibration absorption while maintaining sufficient mechanical stability. The elastic material properties are carefully selected to provide both vibration damping and adequate firmness for stable compressor operation.
3Ease of operation
If isotropic support bodies are used, then uniform support is provided in all directions, but the anisotropic base cannot be properly compensated for directional vibration differences
Solution Approach 1:
The patent implements support bodies with directionally dependent elastic properties, where each support body has different stiffness characteristics along different axes. This local quality variation allows the mounting system to adapt to the anisotropic nature of the base, providing appropriate vibration compensation in each principal direction while maintaining overall uniform support.
Solution Approach 2:
The patent employs asymmetric or directionally differentiated elastic support bodies that are not identical in all orientations. This asymmetry enables the system to compensate for the directional differences in vibration characteristics of the anisotropic base, with each support body optimized for its specific orientation and loading conditions.
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 solution effectively reduces droning noises by allowing the compressor to oscillate differently in various directions, optimizing vibration damping and minimizing noise transmission to the housing.
Implementation Method 1
each support body (10) is also anisotropically elastic with respect to a respective associated body axis (11)
Implementation Method 2
each support body (10) is also anisotropically elastic with respect to a respective associated body axis (11) aligned parallel to the system axis (9) and perpendicular to it
Data Source
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AI summary
The invention relates to a household appliance 1 comprising a functional part 8 mounted on a flat base (7) via several elastic support bodies 10, by which an isotropic vibration can be generated with respect to a system axis 9 oriented vertically to the base 7, wherein the base 7 is anisotropic with respect to the system axis 9 and perpendicular to it. Each support body 10 is anisotropically elastic with respect to its respective body axis 11 oriented parallel to the system axis 9, and the arrangement of the support bodies 10 is anisotropic with respect to the system axis 9.