Enameled wire baking hot air circulation method and device

[0012] Embodiment 1: Enameled wire baking hot air circulation method, the hot air in the oven 1 is sucked out by the fan 2 installed in the front of the oven 1, and the fan 2 sends the hot air containing solvent vapor into the catalytic device 3, and passes through the fan 2. The hot air from the catalytic device 3 enters the combustion chamber 4 for heating, and the heated hot air enters the heat storage chamber 5, and the hot air is sent from the rear of the oven 1 through the heat storage chamber 5, and the heat storage chamber 5 The middle part of the hot air enters the heat exchange device 10 and is discharged after heat exchange. The heat exchange device 10 heats the sucked air and sends it to the front end of the oven 1 .

[0013] The hot air circulation device for enameled wire baking as shown in Figure 1 is composed of an oven 1. A fan 2 is provided on the air supply pipe 7 at the front of the oven 1. The fan 2 is connected to the catalytic device 3 through the air supply pipe 7. The catalytic device 3 is connected to the combustion chamber 4, the combustion chamber 4 is connected to the heat storage chamber 5, the heat storage chamber 5 is provided with an air adjustment pipe 9, the heat storage chamber 5 is connected to the rear of the oven 1, and the storage chamber 5 is connected to the heat exchange device through the exhaust pipe 6 10 (the heat exchange device 10 is a conventional heat exchanger), the heat exchange device 10 is connected to the front end of the oven 1 through the air supply pipe 8 .

[0014] During the working process, because the fan 2 is set before the catalytic device 3 and the combustion chamber 4, the temperature of the hot air in contact with it is usually about 400°C, which is much lower than the temperature experienced by the original fan 2, not only in the fan blades of the fan The material requirements of the air outlet are reduced, and the service life is prolonged. After the hot air enters the catalytic device 3 and the combustion chamber 4, it enters the oven 1 through the heat storage chamber 5, avoiding the direct feeding of the fan. If the wind speed is too fast, the heat in the oven 1 is kept uniform. Even if the furnace chamber of the oven 1 is enlarged and the number of enameled wire cores produced is increased, the excellent surface quality can still be guaranteed; the heat storage chamber 5 is provided with an air adjustment pipe 9, which Part of the fresh air can be inhaled into the storage chamber 5 according to the heat adjustment needs of the oven 1, and at the same time, the storage chamber 5 can send part of the hot air into the heat exchange device 10 through the exhaust pipe 6, and the heat exchange device 10 will contain the air. The hot air of impurities is discharged after heat exchange, and at the same time, fresh air is heated by the heat exchange device 10 and sent to the front end of the oven 1 by the air supply pipe 8 to replace electric heating to achieve the purpose of environmental protection and energy saving.