CN202973426U - Ventilation device - Google Patents

Abstract

The utility model discloses a ventilation device comprising an air feeder, an air supply pipe, an air exhaust fan and an air exhaust pipe. Compared with the prior art, the ventilation device further comprises an air supply plenum chamber and an air exhaust plenum chamber. An air outlet of the air feeder is connected with an air inlet of the air supply plenum chamber through the air supply pipe. An air outlet of the air exhaust plenum chamber is connected with an air inlet of the air exhaust fan through the air exhaust pipe. The ventilation device has the advantages of being simple in structure, low in cost, and large in ranges of control for pollutants and high in collection efficiency due to the fact that air supply jet flow is used for controlling industrial pollution, effectively controlling the industrial pollution and protecting occupational health, and meanwhile saving energy to the maximum degree.

Description

a ventilation device

technical field

The utility model relates to a ventilation device, in particular to a ventilation device for controlling indoor environmental pollution of industrial buildings.

Background technique

With the increasing calls for occupational health protection, people pay more and more attention to the health of workers. However, in industrial buildings, process production usually produces a large amount of pollutants. In order to protect the occupational health of workers, it is necessary to ventilate the process workshop . In the prior art, in order to control the indoor environmental pollution of industrial buildings, local ventilation is usually used, that is, a suction hood is installed near the pollution source, and the suction hood is connected to the exhaust fan through the air duct, and the pollutants are sucked in by the suction of the exhaust fan. Exhaust hood and vent. This kind of suction hood can only achieve pollution control under specific conditions such as close proximity to pollution sources. However, actual site conditions often cannot meet these regulations, resulting in the loss of control of indoor environmental pollution in industrial buildings by such existing devices. , so that a large amount of pollutants generated during the process of production spread to other areas of the workshop or other workshops, and the health of workers working in these areas cannot be effectively protected. In addition to the small pollutant control range and relatively low pollutant capture efficiency, the suction hood also has problems such as large ventilation volume and high energy consumption.

Contents of the invention

The purpose of the utility model is to provide a ventilating device with small ventilation volume, large pollutant control range, high trapping efficiency, effective protection of workers' occupational health, and energy-saving for the deficiencies of the prior art.

The inventor of the present invention has studied ventilation technology and pollutant control for many years, and found that it is more efficient and energy-saving to realize local control of pollutants by blowing and sucking airflow. It's like blowing out a candle with your mouth. It is easy to blow out the candle and requires a small amount of blowing air, but if you use your mouth to inhale to extinguish the candle, you need to spend a lot of effort and use a lot of air Even the amount cannot extinguish the candle.

The technical scheme that realizes the utility model purpose is:

A ventilation device, comprising a blower, a blower pipe, an exhaust fan and a blower pipe, is different from the prior art in that it also includes a blower static plenum and an exhaust blower, the air outlet of the blower passes through the blower pipe and The air inlet of the air supply static plenum is connected, and the air outlet of the exhaust air static plenum is connected with the air inlet of the exhaust fan through the exhaust pipe.

The air-supply plenum is provided with a flow equalizing orifice and a honeycomb-shaped orifice connected to each other, and the honeycomb-shaped orifice is arranged at the air outlet of the air-supply plenum. The flow equalizing orifice plate is provided with evenly distributed through holes, and the aperture and opening ratio of the through holes are determined according to actual needs. The flow equalizing orifice and the honeycomb orifice rectify the air entering the air supply plenum so that the air flows evenly.

The air inlet of the air blower and the air outlet of the exhaust fan are provided with louver adjustment devices.

The air suction port of the exhaust static plenum box is provided with a baffle plate, which can reduce the air suction volume.

When working, the blower sucks fresh air from the air inlet through the air supply pipe into the air supply plenum, and the flow equalization orifice in the air supply plenum rectifies the air to make the air flow evenly, and the air outlet of the air supply plenum The honeycomb-shaped orifice further rectifies the air, making the air flow approximately parallel to the work area, ensuring that workers can breathe fresh air. Under the action of suction, the exhaust fan combines the inhaled air flow and the parallel jet flow from the air supply plenum to form a continuous blowing air flow. After the pollutants produced in the production process are captured by the blowing airflow, they enter the exhaust static pressure box under the suction of the exhaust fan, and are discharged outside through the exhaust pipe from the exhaust port. The air supply and exhaust devices form blowing and suction ventilation devices.

The utility model has the advantages of simple structure, low cost, using the air jet to control industrial pollution, a large range of pollutant control, and high capture efficiency. energy.

Description of drawings

Fig. 1 is the structural representation of embodiment;

Fig. 2 is the structural representation of embodiment uniform flow orifice;

Fig. 3 is a schematic diagram of the structure of the honeycomb orifice plate of the embodiment.

In the figure: 1. Air inlet 2. Air blower 3. Air supply pipe 4. Air supply plenum 5. Flow equalizing orifice 6. Honeycomb orifice 7. Baffle 8. Suction port 9. Exhaust plenum 10 .Exhaust pipe 11.Exhaust fan 12.Exhaust outlet.

Detailed ways

The content of the utility model will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited.

Example:

With reference to Fig. 1, a kind of ventilating device comprises air blower 2, air supply pipe 3, exhaust fan 11 and exhaust air pipe 10, also comprises air supply plenum 4 and exhaust air plenum 9, and the air outlet of air supply 2 passes through air supply The air duct 3 is connected with the air inlet of the air supply plenum 4 , and the air outlet of the exhaust air plenum 4 is connected with the air inlet of the exhaust fan 11 through the exhaust pipe 10 .

The air-supply plenum 4 is provided with a flow equalizing orifice 5 and a honeycomb-shaped orifice 6 connected to each other, and the honeycomb-shaped orifice 6 is arranged at the air outlet of the air-supply plenum 4 . The equalizing orifice 5 and the honeycomb-shaped orifice 6 rectify the air entering the air supply plenum 4 to make the air flow evenly.

The air inlet 1 of the blower 2 and the air outlet 12 of the exhaust fan 11 are provided with a louver adjusting device.

A baffle 7 is provided at the air suction port 8 of the exhaust static plenum box 9 .

Referring to FIG. 2 , the equalizing orifice plate 5 is provided with through holes of equal size and uniform distribution, and the aperture and opening ratio of the through holes are determined according to actual needs.

Referring to Fig. 3, the honeycomb-shaped orifice plate 6 is provided with honeycomb-shaped holes of equal size and uniform distribution, the two sides of the holes communicate, and the airflow flowing through the equalizing orifice plate 5 can freely flow through the honeycomb-shaped holes.

Claims (4)

1. ventilation unit, comprise pressure fan, ajutage, exhaust blower and exhaust duct, it is characterized in that: also comprise air supply plenum chamber and air draft plenum chamber, the air outlet of pressure fan is connected with the air inlet of air supply plenum chamber by ajutage, and the air outlet of air draft plenum chamber is connected with the air inlet of exhaust blower by exhaust duct.

2. ventilation unit according to claim 1, it is characterized in that: be provided with the uniform flow orifice and the honeycombed orifice plate that are interconnected in described air supply plenum chamber, the honeycombed orifice plate is located at the air outlet of air supply plenum chamber.

3. ventilation unit according to claim 1, it is characterized in that: the air inlet of described pressure fan and the exhaust outlet of exhaust blower are provided with the blinds adjusting device.

4. ventilation unit according to claim 1, it is characterized in that: the inlet scoop of described air draft plenum chamber is provided with baffle plate.

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