Device for heating air

Abstract

The present disclosure relates to a device for heating air. A temperature sensor measures a temperature of the combustion air which is supplied to a burner. A monitoring unit evaluates the measured values in order to monitor the device.

1 . A device for heating air, comprising:
 a housing, a burner, a combustion air fan, a combustion air supply, a fuel supply, a flue gas discharge, a heat exchanger, an air circulation fan, a temperature sensor, a data memory, and a monitoring unit,   wherein the housing comprises at least the burner, the combustion air fan, the fuel supply, the heat exchanger, and the air circulation fan,   wherein the burner generates thermal energy by combusting a fuel-combustion air mixture,   wherein the combustion air fan supplies combustion air from the combustion air supply to the burner,   wherein the fuel supply supplies fuel to the burner,   wherein the flue gas discharge discharges flue gas produced by the combustion of the fuel-combustion air mixture,   wherein the heat exchanger transfers the thermal energy to the air to be heated,   wherein the air circulation fan supplies the air to be heated to the heat exchanger,   wherein the temperature sensor measures a temperature of the combustion air,   wherein the monitoring unit evaluates the measured values of the temperature sensor using data that is stored in the data memory, and   wherein, based on the evaluation, the monitoring unit monitors the device-preferably the air circulation fan.   
     
     
         2 . The device according to  claim 1 ,
 wherein the device is adapted to be operated at a plurality of power levels,   wherein the power levels can be selected by an adjusting device, and   wherein the monitoring unit evaluates the measured values as a function of the selected power level.   
     
     
         3 . The device according to  claim 1 ,
 wherein the monitoring unit evaluates the measured values as a function of an outside temperature.   
     
     
         4 . The device according to  claim 1 ,
 wherein the monitoring unit evaluates the measured values with a view to whether a temperature limit value has been exceeded,   wherein in the event that the temperature limit value has been exceeded, the monitoring unit determines a temperature gradient from the measured values,   wherein the monitoring unit compares the determined temperature gradient with a gradient limit value and generates a comparison result, and   wherein in the event that the comparison result means that the gradient limit value has been exceeded, the monitoring unit signals an error-preferably an error of the air circulation fan.   
     
     
         5 . The device according to  claim 4 , wherein the temperature limit value and/or the gradient limit value are/is dependent on the selected power level and/or the outside temperature. 
     
     
         6 . The device according to  claim 1 , wherein the combustion air supply and the flue gas discharge are configured and arranged in relation to each other such that a transfer of thermal energy between the flue gas and the combustion air is allowed.