Time delay type efficient noise elimination and air changing device and method

Abstract

The invention discloses a time delay type high-efficiency noise elimination and air changing device and method. The device comprises a microprocessor, an air cylinder, a piston and a power mechanism for driving a piston to move, wherein a sealing plate is arranged in the air cylinder and is divided into a part A and a part B, wherein the piston is arranged in the part A of the air cylinder, a second air outlet and a second air inlet are formed in one end of the part A of the air cylinder, a third air inlet and a third air outlet are formed in the other end of the part A of the air cylinder, the cylinder body between the piston and the end in which the second air inlet and the second air outlet are formed is a first part, and the cylinder body between the piston and the end in which the third air outlet and the third air inlet are formed is a second part; and a first buffer chamber is connected to the second air inlet, and a second buffer chamber is connected to the second air outlet. According to the time delay type high-efficiency noise elimination and air changing device and method, the working states of each valve and the power mechanism are controlled by utilizing the microprocessor, the indoor / outdoor directional and bidirectional air changing can be realized, and the device and the method have the advantages of good noise elimination and insulation effects, high air changing efficiency, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a time-delay type high-efficiency noise reduction ventilation device and method. Background technique [0002] Noise is the sound formed by the random and chaotic combination of sound waves of many different frequencies and intensities. Noise pollution belongs to physical pollution. It is essentially a mechanical wave, which is the form of vibration and the transmission of energy. It does not have the accumulation of substances. When the noise source stops running, the noise pollution disappears immediately, and there is no residual pollutant. The energy of the noise also gradually decreases over time until it disappears. [0003] Noise has a great impact on people's daily life and work. The noise of about 50 decibels will affect rest and sleep. The noise of more than 70 decibels can make people upset, lose concentration and reduce work efficiency. ...

AI Technical Summary

Problems solved by technology

However, since the liquid is a sound transmission medium, the noise can be transmitted into the device through the liquid. In addition, the thin one-way valve in the device is difficult to block strong noise, resulting in an unsatisfactory sound insulation effect of the device

In order to supply enough air for the room, the speed of the piston action needs to be fast enough, so the air stays in the piston chamber for not enough time, so that the noise source in the air cannot be completely cut off, and the air passes through the gas pressure due to the insufficient attenuation time of the noise vibration peak. After the outlet is discharged into the room, the noise pollution is not significantly reduced

In addition, in order to keep clean air entering the room, the liquid in the liquid tank of the device must be replaced frequently, so the device is cumbersome and expensive to use

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