Method for producing a heating device, and heating device
AssigneeTruma Gerätetechnik GmbH & Co. KG
InventorsDennis Reininger, Matthias Goller
Life of this patent
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Abstract
The invention relates to a method of manufacturing a heating device (1) which has a fan (3) located behind a grid (2) in an interior (10). The fan (3) is mounted in the interior (10), and the grid (2) is mounted as a part of the heating device (1). The speed of the fan (3) is determined in a contactless manner by evaluating a reflection behavior of the fan (3) in that a light signal (50) is emitted through a recess (20) in the grid (2) in the direction of the fan (3), and/or is received through a recess (20) in the grid (2) from the direction of the fan (3). Furthermore, the invention relates to a heating device (1).
Claims16
A heating device, comprising:
- a grid having a grid structure with elongated openings;
- a fan located behind the grid in an interior of the heating device, the fan including a fan wheel and a plurality of blades protruding outward from the fan wheel;
- a first opening in the fan wheel;
- a second opening in the grid structure, the second opening having a different shape than the elongated openings of the grid structure;
- and
- a surface behind the first opening in the fan wheel,
- wherein the second opening in the grid structure and the first opening in the fan wheel overlap one another over a first rotational angle range of the fan that is less than 360 degrees and are nonoverlapping outside the first rotational angle range.
A method of manufacturing a heating device, the method comprising:
- mounting a fan in an interior of the heating device, the fan including a fan wheel, a plurality of blades protruding outward from the fan wheel, and a first opening in the fan wheel;
- mounting a grid in front of the fan, the grid having a grid structure comprising elongated openings and a second opening in the grid structure, the second opening having a different shape than the elongated openings of the grid structure;
- after the mounting of the fan and the mounting of the grid, emitting a light signal in a direction of the second opening in the grid structure;
- and
- determining a speed of the fan based on a reflected version of the light signal that exits the heating device through the second opening in the grid structure,
- wherein the second opening in the grid structure and the first opening in the fan wheel overlap one another over a first rotational angle range of the fan that is less than 360 degrees and are nonoverlapping outside the first rotational angle range.
Dependencies are inferred from the claim text.