AIR HEATING DEVICE Russian patent published in 2022 - IPC F24H3/04 

FIELD: heat power devices.

SUBSTANCE: invention relates to heat power devices, in particular to devices for heating air, and can mainly be used for heating fresh supply air in ventilation systems and autonomous air heating of buildings and structures, including heating supply air supplied for ventilation of mines, as well as for heating air, gas or drying agent in process heating and drying systems. The device for air heating contains a housing with screens with a flame nozzle of a pre-mixing burner located in it, connected to a combustion chamber, open for the exit of combustion products on the side opposite from the burner, and connected by means of a gas duct to a device for preparing a gas-air mixture of a burner, consisting of a mixer, gas supply control devices, air supply control devices, drives of gas and air supply control devices, combustion air supply fan. At the same time, a slotted combustion stabilizer with bent swirler petals is installed in the flame nozzle, which forms an intense vortex flame formed from microtorches, and a flow equalizer is located under the combustion stabilizer, consisting of two parallel perforated plates, and a fibrous heat-resistant filler in the gap between them, which performs the function a flame arrester against flashback, while a temperature sensor is located in this layer to signal flashback of the flame.

EFFECT: significant improvement in the quality of gas combustion and an increase in the environmental friendliness of the device, namely: a decrease in the concentration of harmful CO and NOx emissions in the heated air; in reducing the aerodynamic resistance of the device and reducing the power consumption for air movement; increase in heat and power efficiency; lowering the surface temperature and the thermal load on the metal of the burner elements; increase the operational reliability and increase the service life of the device; improving the manufacturability and cost-effectiveness of manufacturing; reduction of metal consumption and dimensions of the device.

10 cl, 9 dwg