Novel small-flue induced draught system

Abstract

The invention discloses a novel small-flue induced draught system. The novel small-flue induced draught system comprises a hearth flue, a jet flow induced draught device, an air heating control unit connected with the control end of the jet flow induced draught device, and a closed loop hearth pressure control unit connected between a hearth and the control end of the jet flow induced draught device, wherein the hearth flue and the jet flow induced draught device are connected in sequence. The air heating control unit heats external compressed air and outputs the air to the jet flow induced draught device, and the closed loop hearth pressure control unit adjusts working pressure of the jet flow induced draught device according to the hearth pressure in real time. The novel small-flue induced draught system uses the compressed air of the air heating control unit as a power and uses the jet flow induced draught device to perform induced draught to a small flue, and the problem that the system is free of high temperature resistance, blades are abraded and dust sticks on the blades by means of an induced draught motor is solved. In addition, the closed loop hearth pressure control unit can adjust the working pressure of the jet flow induced draught device in real time.

Description

technical field [0001] The present invention relates to a flue-induced air technology, and more specifically, to a novel small flue-induced air system. Background technique [0002] For flue induced draft, generally all adopt the mode of installing induced draft motor at flue exit in the prior art. But for the small flue, if the installation of the induced draft motor is adopted, there are the following difficulties: 1. Because the diameter of the small flue is small and the flue is short, the flue gas in the flue flows quickly, and the temperature of the flue gas at the outlet is high. The use of an induced draft motor will bring difficulties to the temperature resistance and long-term use of the motor; 2. The speed of the flue gas is fast, and the blades of the induced draft motor are greatly worn, which affects the long-term use of the motor; 3. The dust in the flue gas is not filtered completely , Dust and condensed water will adhere and deposit on the fan blades, affec...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of air induction system for small flues in order to solve the technical problems of short motor life, poor balance and poor flexibility due to the use of induced air motors to induce air in small flues in the prior art

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