Air outlet device capable of adjusting induced fresh air system

Abstract

The invention discloses an air outlet device capable of adjusting an induced fresh air system. The air outlet device comprises a fresh air duct, a first iris valve, a first conical nozzle, a second iris valve and a mixed air duct, wherein the inner diameter at the air outlet end of the first conical nozzle is smaller than that of the air inlet end of the first conical nozzle. According to the air outlet device, outdoor air ejected from the first conical nozzle is fully and evenly mixed with indoor air of negative pressure backflow through the induced injection principle, and then the mixed air is exhausted indoors, so that the temperature and humidity of original outdoor air are lowered or increased; mixed gas has appropriate temperature and humidity, and therefore discomfort caused by the air outlet mode of an original positive pressure type fresh air system is reduced, and practicability of the air outlet device is improved.

Description

technical field [0001] The invention relates to the technical field of building ventilation, in particular to an air outlet device of an adjustable induced fresh air system. Background technique [0002] With the advancement of science and technology and economic development, air conditioning systems are usually installed in current buildings. However, the air-conditioning system only cools or heats up the indoor gas, and the gas is still the original gas without any change. The air-conditioning system only changes the temperature of the indoor air to meet the needs of human daily life and improve comfort. Over time, the indoor air will inevitably become more and more dirty, affecting human health. At this time, it is necessary to replace the indoor air, discharge the indoor dirty air to the outside, and introduce the fresh outdoor air into the room. Traditionally, the above-mentioned air exchange is realized by devices such as windows, exhaust fans or ventilation fans. ...

AI Technical Summary

Problems solved by technology

[0004] However, in summer, the temperature of the outdoor air sent by the positive pressure fresh air system is higher than the temperature of the indoor air, the humidity of the outdoor air is greater than that of the indoor air, and the outdoor air with higher temperature and higher humidity continuously enters the room. It will bring obvious discomfort to humans living indoors; in winter, the temperature of the outdoor air sent by the positive pressure fresh air system is lower than the temperature of the indoor air, and the humidity of the outdoor air is lower than that of the indoor air, which is lower. The constant flow of warm and low-humidity outdoor air into the house can cause significant discomfort to the humans who live indoors

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