烘干室用的热风系统

Abstract

本实用新型公开了烘干室用的热风系统，解决了现有技术的热风系统容易导致烘干室内温度波动的技术问题。本实用新型提出的烘干室用的热风系统，包括混热箱、进风管道、出风管道、第一风机、制热装置、输热管道、第二风机以及排风管道，混热箱具有第一接口、第二接口和第三接口，进风管道连通第一接口和烘干室的进风口，出风管道连通第二接口和烘干室的出风口，第一风机设置在进风管道中使循环风沿进风管道、烘干室、出风管道、混热箱的顺序循环，制热装置产生温度高于循环风温度的热空气，输热管道连接制热装置和第三接口，第二风机将热空气吹入混热箱使热空气与混热箱中的循环空气进行混合，排放管道与出风管道连通使部分循环风由排放管道排出。

Claims

1. A hot air system for a drying chamber, characterized in that include: A mixing chamber having a first interface, a second interface, and a third interface; An air inlet duct connects the first interface to the air inlet of the drying chamber; An air outlet duct connects the second interface to the air outlet of the drying chamber; The first fan is installed in the air inlet duct, so that the circulating air circulates in the order of air inlet duct, drying chamber, air outlet duct, and mixing box; The heating device generates hot air at a temperature higher than that of the circulating air. A heat transfer pipeline connects the heating device and the third interface; The second fan blows the hot air into the mixing chamber, so that the hot air mixes with the circulating air in the mixing chamber. as well as, An exhaust duct is connected to the outlet duct, and some of the recirculated air is discharged through the exhaust duct.

2. The hot air system of claim 1, wherein, It also includes a hot air box, which is connected between the heating device and the heat transfer pipe.

3. The hot air system of claim 2, wherein, The device includes a control unit, and a first temperature sensor is provided in the hot air box. The first temperature sensor is used to sense the temperature of the hot air in the hot air box, and the control unit controls the operation of the heating device based on the temperature of the hot air.

4. The hot air system of claim 1, wherein, The hot air system also includes a second temperature sensor installed in the air outlet duct. The second temperature sensor is used to obtain the air temperature in the air outlet duct. The heat transfer duct is provided with a regulating valve for adjusting the hot air volume entering the mixer. The regulating valve is adjusted based on the air temperature in the air outlet duct and the air volume of the first fan.

5. The hot air system of claim 1, wherein, The heating device includes a hot air furnace, a preheating pipe, and a heat pump unit that is always in operation. The hot air furnace includes an air inlet and an air outlet. The preheating pipe connects the heat pump unit and the air inlet of the hot air furnace. The air outlet of the hot air furnace is connected to the heat transfer pipe. The second fan is installed in the preheating pipe. The heat pump unit heats the ambient air to preheated air at a first temperature, and the second fan blows the preheated air into the hot air furnace, which heats the preheated air to hot air at a second temperature, which is higher than the first temperature.

6. The hot air system of claim 5, wherein, The first temperature is 60°C to 100°C.

7. The hot air system of claim 5, wherein, The second temperature is 200°C to 360°C.

8. The hot air system of claim 5, wherein, The heat pump unit includes a fresh air inlet, and at least a portion of the air discharged from the exhaust duct is connected to the fresh air inlet, wherein the air entering the fresh air inlet is heated to preheated air.

9. The hot air system of claim 1, wherein, Multiple drying chambers are provided, and multiple mixing boxes, air inlet pipes, air outlet pipes, and the first fan are provided accordingly.

10. The hot air system of claim 9, wherein, The exhaust duct is set as one, and multiple air outlet ducts are connected to the exhaust duct.

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