Method and device for adjusting the heat flow at heating seats
First Claim
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1. A method for adjusting heat floiw in a seat having a sitting surface and heat generator, characterized by sensing the direction of theheat flow between the sitting surface, of the seat and the heat generator and automatically supplying power to the heat generator when the heat flow is in a direction from the sitting surface into the seat.
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Abstract
A method and a device for adjusting the heat flow at heating seats having heat generators (3) in the form of for example heating conductors placed in coils. The direction of the heat flow between the sitting surface of the seat and the heat generator (3) is sensed and power is supplied to the heat generator (3) when the direction of the heat flow is from the sitting surface into the chair.
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15 Claims
- 1. A method for adjusting heat floiw in a seat having a sitting surface and heat generator, characterized by sensing the direction of theheat flow between the sitting surface, of the seat and the heat generator and automatically supplying power to the heat generator when the heat flow is in a direction from the sitting surface into the seat.
- 3. A device for adjusting the heat flow in a seat having a sitting surface and a heat generator, said device comprising means for sensing the direction of heat flow between a sitting surface of a seat and a heat generator and for supplying power to the heat generator when the direction of the heat flow is from the sitting surface into the seat, characterized in that a first layer (4) of a heat-conductive material is arranged between the heat generator (3) and the sitting surface of the seat and that a temperature sensor (5) is arranged in connection with each side of the layer (4) one side temperature sensor facing the sitting surface and a second said temperature sensor facing the heat generator (3), said temperature sensors (5) being connected to a means comparing signals of the sensors and arranged to connect or cut out the current to the heat generator (3).
Specification