Dishwasher Door Sound Shield for Base Gap Noise Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Household dishwashers, particularly built-in models, face challenges in soundproofing due to noise escaping through the gap between the movable container door and the lower base region, caused by water and technical noises, which is undesirable in kitchen environments used as living spaces.
Innovation Solution
A sound shield with a hard holding area and a soft neck area is arranged on either the machine base or the outer door, allowing for soundproof contact only when the container door is closed, using a small elastic area for sealing and being optically concealed when open, thus simplifying assembly and reducing noise levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the outer door is left open at the bottom to allow pivoting movement, then the pivoting geometry is favorable and assembly is simplified, but sound escapes from the dishwasher to the outside
Solution Approach 1:
A sound shield made of flexible material is attached to the outer door, extending downward to close the gap between the door and machine base. The flexible material allows the sound shield to conform to the door's movement during pivoting while maintaining contact to block sound transmission.
Solution Approach 2:
The sound shield acts as an intermediary element between the outer door and the machine base, filling the gap that would otherwise allow sound transmission. It mediates between the need for door movement and the need for sound isolation.
2Object-generated harmful factors
If a rubber apron is used to close the gap, then soundproofing is improved, but the assembly process becomes complex and expensive
Solution Approach 1:
The sound shield is made from inexpensive materials such as plastic or metal instead of expensive rubber, and is designed as a simple attachment that can be easily installed and replaced if needed.
Solution Approach 2:
The sound shield is designed as a separate, modular component that can be attached to the outer door independently, simplifying assembly and allowing for easy maintenance or replacement without affecting other door components.
3Object-generated harmful factors
If a closed lower edge of the outer door is used, then soundproofing is improved, but the pivoting geometry becomes unfavorable
Solution Approach 1:
The sound shield is made of flexible material that can extend downward without requiring a closed door structure, allowing the door to maintain its open lower edge for favorable pivoting geometry while still achieving soundproofing through the flexible barrier.
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 solution effectively reduces noise levels by more than one decibel without the need for complex assembly or expensive materials, maintaining a cost-effective and easy-to-install soundproofing mechanism that remains invisible and functional during door movement.
Implementation Method 1
a soft neck area lying between the hard holding area and the hard lip area, via its elastic deformability a soundproof contact of the hard lip area only when the container door is closed
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a dishwasher (1), in particular a household dishwasher, with an upper part (1.O) comprising at least one washing container (2) and a container door (3) on the front and with at least one machine base (19) on the front and carrying several appliance units and underneath of the upper part (1.O) arranged base support (1.U), wherein the container door (3) has an inner door (3.1) facing the washing container (2) and an inner door (3.1) facing away from the washing container (3) and of the inner door (3.1) of the container door ( 3) comprises an outer door (3.2) that is spaced apart at least in certain areas, with at least one sound shield (23) being arranged between the outer door (3.2) of the container door (3) and the front machine base (19) of the base support (1.U), the at least one Sound shielding (23) is arranged either on the machine base (19) of the base support (1.U) or on the outer door (3.2) of the container door (3) and on the other unit, ie on the outer door (3.2) of the container door (3) or on the machine base (1) of the base support (1.U), only when the container door (3) is closed in a sound-proof manner, and wherein the at least one sound shielding (23) at least when the container door (3 ) in a door space (3.R) located at least between the outer door (3.2) of the container door (3) and the inner door (3.1) of the container door (3) or in a region of the machine base (19) of the base support (1.U ) located space intervenes. The dishwasher (1) according to the invention is characterized in that the at least one sound shield (23) has at least one, in particular hard, holding area (24) for an arrangement on the machine base (19) of the base support (1.U) or on the outer door (3.2) of the Container door (3), a particularly hard lip area (28) facing away from the particularly hard holding area (24) for soundproof contact with the other structural unit, i.e. on the outer door (3.2) of the container door (3) or on the machine base (1) of the base support (1.U), only when the container door (3) is closed and a particularly soft neck area (29) lying between the particularly hard holding area (24) and the particularly hard lip area (28), via the elastic deformability of which a soundproof contact of the hard Lip area (28) only when the container door (3) is closed on the outer door (3.2) of the container door (3) or on the machine base (19) of the base support (1.U) we allow d, includes.