Ventilation device and stove with such a ventilation device
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Solution Overview
Problem
Existing ventilation devices for wall openings in ovens are mechanically demanding, require extensive maintenance, and do not meet modern aesthetic standards, with adjustable flaps prone to deformation and incomplete air flow regulation.
Innovation Solution
A ventilation device with a carrier frame and adjustable cover plate, featuring retaining strips and adjusting elements that allow for easy adjustment of air flow direction and intensity, ensuring durability and simple installation while matching aesthetic expectations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If strip-shaped flaps are used to adjust air flow in ventilation grilles, then air flow regulation is possible, but the flaps are mechanically demanding and prone to deformation
Solution Approach 1:
The ventilation grille is divided into multiple independent adjustable elements (lamellae) that can be individually adjusted. Each lamella is a separate segment that can be rotated independently around its axis, allowing precise control of air flow without the mechanical stress concentration found in continuous strip flaps. This segmentation distributes mechanical loads and eliminates the deformation propagation issue.
Solution Approach 2:
The lamellae are designed to be dynamically adjustable through rotation around their longitudinal axes. Each lamella can be independently rotated to different angles to control the air flow direction and volume. This dynamic adjustment mechanism replaces the static or limited-motion strip flaps, providing better mechanical reliability through simple rotational movement around fixed axes.
2Ease of operation
If multiple flaps are adjusted simultaneously through one flap, then air flow control is achieved, but the force required causes deformation and damage
Solution Approach 1:
The adjustment mechanism is segmented into independent control points for each lamella. Instead of using one flap to control all others through mechanical linkage, each lamella has its own independent adjustment capability. This eliminates the need to transmit high forces across multiple components, as each element is adjusted separately with minimal force required.
Solution Approach 2:
An adjustment element with a detent mechanism acts as an intermediary between the user and the lamella. The detent mechanism provides mechanical advantage and positioning, allowing easy rotation and secure holding of each lamella at desired angles without requiring continuous force application or complex linkage systems.
3Adaptability or versatility
If ventilation grilles with strip flaps are used, then air flow adjustment is possible, but they do not meet modern aesthetic ideas
Solution Approach 1:
Each lamella can have different local properties including varying widths, lengths, and orientations. The lamellae can be designed with different geometries to match specific aesthetic requirements while maintaining their adjustment functionality. This allows customization of the visual appearance of each element to achieve modern aesthetic designs while preserving air flow control capabilities.
Solution Approach 2:
The lamellae provide dynamic adjustment capability that allows the ventilation grille to change its visual appearance based on operational requirements. When closed, the lamellae can be positioned to create a uniform aesthetic surface; when open, they can be angled to optimize air flow. This dynamic adaptability satisfies both aesthetic and functional requirements.
4Reliability
If clamps with springs are used to attach ventilation grille to wall opening, then secure attachment is achieved, but installation and adjustment become complex
Solution Approach 1:
The attachment system is segmented into simple attachment elements distributed at multiple locations on the frame. Instead of using complex spring clamps, each attachment point uses a simple element that can be independently positioned and secured. This segmentation simplifies both the individual attachment mechanism and the overall installation process while maintaining secure attachment through distributed mounting points.
Data Source
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AI summary
The invention relates to a ventilation device for attachment to a wall opening, in particular a wall opening of an oven.The ventilation device is provided to have: - a support (200) with a support frame (201), the front (202) of which surrounds a support opening (204) and the rear (203) of which faces the wall of the wall opening, wherein the support frame (201) has a circumferential support frame web (205) extending into the support opening (204) forming an air passage opening (228) and the support frame web (205) has at least one retaining strip (226) which is attached to the support frame web (205); and - a cover plate (400) with a back side (402) facing the air passage opening (228) and on which an adjusting element (404) is formed for detachable attachment to the retaining strip (226) of the support frame web (205), which allows a variation of the distance between the cover plate (400) and the air passage opening (228).