Delivery device for providing two medium flows guided separately from one another, especially in a fuel-operated vehicle heater
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Solution Overview
Problem
Existing delivery devices for fuel-operated vehicle heaters face challenges in reliably separating and driving two medium flows, such as combustion air and heating air, without mechanical coupling, which complicates their design and operation.
Innovation Solution
A delivery device utilizing a magnetic coupling device to drive two delivery wheels, one for gaseous and one for liquid mediums, allowing for separate medium flow management without direct mechanical interaction, enabling reliable separation and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common drive motor is used to drive two delivery wheels, then device complexity is reduced, but reliable separation of the two medium flows becomes difficult to achieve
Solution Approach 1:
A magnetic coupling device acts as an intermediary between the drive motor and the delivery wheels. The magnetic coupling transmits rotational motion through a wall barrier, allowing the drive motor to drive both delivery wheels while maintaining separate medium flow paths. This resolves the contradiction by enabling common drive usage without compromising flow separation reliability.
Solution Approach 2:
The interior space is divided into separate compartments by walls, with each delivery wheel positioned in its own compartment. The magnetic coupling device penetrates the wall to connect the drive motor with the delivery wheels on opposite sides. This segmentation ensures reliable medium flow separation while the magnetic coupling maintains the benefit of a common drive system.
2Reliability
If walls are provided to separate medium flows, then flow separation reliability is improved, but device complexity increases due to additional components
Solution Approach 1:
The magnetic coupling device serves multiple functions simultaneously: it transmits rotational motion from the drive motor to the delivery wheels, penetrates the wall structure, and maintains the integrity of the flow separation barrier. By combining these functions in a single component, the patent achieves reliable medium flow separation without significantly increasing overall device complexity.
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 magnetic coupling enables reliable separation and efficient driving of both delivery wheels, simplifying the design and ensuring effective medium flow management in fuel-operated vehicle heaters.
Implementation Method 1
at least one delivery wheel is coupled with the drive motor via a magnetic coupling device
Data Source
AI summary
A delivery device provides two medium flows guided separately from one another in a fuel-operated vehicle heater. The delivery device includes a first delivery wheel (14) rotatable about a first rotation axis (A) for delivering a first medium, a second delivery wheel (16) rotatable about a second rotation axis (A) for delivering a second medium, as well as a drive motor (12) for driving the first delivery wheel (14) and the second delivery wheel (16). At least one delivery wheel (16) is coupled with the drive motor (12) via a magnetic coupling device (60).