Refrigerator Fan Assembly Frame for Error-Proof Reversible Mounting
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Solution Overview
Problem
The existing refrigeration appliances require different frames for fans based on the desired direction of rotation, leading to increased production costs and potential incorrect installation due to the lack of a standardized frame design.
Innovation Solution
A frame design that allows the fan to be mounted in two orientations, with electrical contact elements positioned differently in each orientation to ensure correct installation, preventing the fan from being installed with the wrong rotation by using complementary plug connectors and screw domes for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different frames are used for different fan rotation directions, then the fan can only be installed with the desired direction of rotation, but the production costs increase
Solution Approach 1:
The patent applies universality by designing a single frame that can accommodate fans in two different orientations (0° and 180°) through symmetric mounting locations. The frame includes two identical mounting locations positioned symmetrically, allowing the same frame to be used regardless of the desired fan rotation direction, thereby eliminating the need for different frames for different rotation directions and reducing production costs.
2Ease of manufacture
If a uniform frame is used for both rotation directions, then production costs are reduced, but the fan may be installed with the wrong direction of rotation
Solution Approach 1:
The patent applies asymmetry through the electrical contact element configuration. While the frame structure is symmetric with two mounting locations, the electrical contact element is positioned asymmetrically relative to these locations. This creates an asymmetric electrical connection that only works correctly when the fan is installed in the proper orientation, providing a built-in error prevention mechanism that ensures reliable installation while using a uniform frame.
3Adaptability or versatility
If the fan can be installed in two orientations, then a uniform frame can be used, but it becomes unclear which orientation is correct
Solution Approach 1:
The patent applies self-service through the electrical contact element design that automatically guides correct installation. The electrical contact element is positioned such that it can only establish proper electrical connection when the fan is installed in the correct orientation. This self-guiding mechanism eliminates the need for external markings or instructions, allowing installers to correctly install the fan simply by completing the electrical connection, thereby maintaining versatility while ensuring installation clarity.
Data Source
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AI summary
The invention relates to a refrigeration device, in particular a domestic refrigeration device, comprising a chamber (26; 27), at least one ventilator (1) and a support (2) mounted in the at least one chamber (26; 27) and being embodied to receive the ventilator (1) in two different positions. A contact element (10) which is electrically connected to the ventilator (1) can only be mounted in the first mounting point (16) of the support (2) when the ventilator is in the first position and only in the second mounting point (16) of the support (2) when the ventilator (1) is in the second position.