CN206755479U - Roof natural ventilation - Google Patents

Abstract

The utility model relates to a ventilator, in particular to a roof natural ventilator for natural ventilation in the construction field. The roof natural ventilator includes a diversion shell, and a rain shield is arranged in the diversion shell, and is characterized in that the upper ends of the two rain shields protrude from the diversion shell, and the two rain shields form an umbrella shape. Advantages and effects of the utility model: the utility model improves the ventilation effect of the ventilator, reduces the height of the ventilator, and improves the ventilation effect of the ventilator. The airflow inside the ventilator is optimized by extending the flashing beyond the deflector housing. Through the design of the rain shield, the eddy current in the ventilator is reduced, thereby improving the ventilating performance of the ventilator. Determining the angle between the diversion shell and the horizontal direction and the angle between the rain shield and the horizontal direction can greatly reduce the resistance of the ventilator itself.

Description

roof natural ventilator

technical field

The utility model relates to a ventilator, in particular to a roof natural ventilator for natural ventilation in the construction field.

Background technique

The natural ventilation technology using thermal pressure can ensure fresh air in the building and take away excess heat without consuming power, saving energy, saving equipment investment and operating costs, so it is an economical and effective ventilation method. Nowadays, roof ventilators are mostly used as ventilation equipment for natural ventilation. Natural ventilators are divided into thin natural ventilators and streamlined natural ventilators in two forms. The main advantages and disadvantages of the existing streamlined ventilator are: the streamlined ventilator has a good ventilation effect and can ensure sufficient ventilation volume; the main disadvantage is that the height of the ventilator is high and the weight of the equipment is large because the rain shields are all arranged in the diversion shell , The manufacturing cost is high, and the air forms a vortex in the ventilator due to the influence of the rain shield, which directly affects the gas flow and increases the resistance of the gas in the ventilator.

There is a large amount of waste heat in industrial workshops. In order to achieve the ideal ventilation effect in workshops with long lengths, a large number of ventilators is required, and the cost of using streamlined ventilators is high. If a thin ventilator is selected, the throat area is required to be increased under the same conditions, which is not conducive to the stability of the structure.

Therefore, whether the manufacturing cost of the ventilator can be reduced and a good ventilation effect can be ensured is the main criterion for measuring the performance of the ventilator.

Contents of the invention

In order to solve the above-mentioned technical problems, the utility model provides a roof natural ventilator, the purpose of which is to reduce the height of the ventilator, reduce the weight of the equipment, and reduce the manufacturing cost.

In order to achieve the above purpose, the utility model roof natural ventilator includes a diversion shell, and two rain shields are arranged in the diversion shell. form an umbrella.

The angle between the diversion shell and the horizontal direction is 20°±5°.

The angle between the rain shield and the horizontal direction is 28°±5°.

The middle of the bottom of the diversion shell is the throat, the main support plate is provided between the two ends of the throat and the top of the diversion shell, the lower end of the rain shield is fixed to the main support plate, and the throat is provided with a frame body, the frame body An auxiliary support plate is arranged between the two rain shields.

Advantages and effects of the utility model: the utility model improves the ventilation effect of the ventilator, reduces the height of the ventilator, and improves the ventilation effect of the ventilator. The airflow inside the ventilator is optimized by protruding the flashing from the deflector housing. Through the design of the rain shield, the eddy current in the ventilator is reduced, thereby improving the ventilating performance of the ventilator. Determining the angle between the diversion shell and the horizontal direction, and the angle between the rain shield and the horizontal direction can greatly reduce the resistance of the ventilator itself

The overall ventilation performance of the ventilator is improved, and at the same time, the overall height of the ventilator is reduced under the premise of ensuring the performance. Not only the production cost of the ventilator is reduced, but also the overall weight of the ventilator is reduced, thereby saving the amount of materials used for the support of the lower factory building, which can save construction costs to a certain extent. Existing streamline ventilator, when throat is 6 meters, the height of ventilator is 4.45 meters, and the utility model can reduce the height of ventilator to 3.4 meters.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. diversion shell; 2. rain shield; 3. main support plate; 4. auxiliary support plate; 5. throat; 6. frame body.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in the figure, the roof natural ventilator of the utility model comprises a diversion shell 1, and two rain shields 2 are arranged in the diversion shell 1, and the upper ends of the two rain shields 2 extend out of the diversion shell 1, and the two shields Rain plate 2 forms umbrella shape.

The angle between the diversion shell 1 and the horizontal direction is 20°±5°.

The angle between the rain shield 2 and the horizontal direction is 28°±5°.

The throat of the utility model is 6 meters as an example, the angle of the diversion shell 1 and the horizontal direction is 20 °, and the angle of the rain shield 2 and the horizontal direction is 28 °. The height of the ventilator is 3.4 meters.

The middle of the bottom of the diversion shell 1 is a throat 5, the main support plate 3 is arranged between the two ends of the throat 5 and the top of the diversion shell 1, the lower end of the rain shield 2 is vertically fixed to the main support plate 3, and the throat A frame body 6 is arranged in the frame body 5, and an auxiliary support plate 4 is arranged between the frame body 6 and the two rain shields 2.

Claims (4)

1. roof natural ventilation, including water conservancy diversion shell, two pieces of weather shields are provided with water conservancy diversion shell, it is characterised in that two pieces of gears Water conservancy diversion shell is stretched out in rain plate upper end, and two pieces of weather shields form umbrella shape.

2. roof natural ventilation according to claim 1, it is characterised in that the angle of water conservancy diversion shell and horizontal direction is 20°±5°。

3. roof natural ventilation according to claim 1, it is characterised in that the angle of weather shield and horizontal direction is 28 ° ±5°。

4. roof natural ventilation according to claim 1, it is characterised in that it is aditus laryngis among the bottom of water conservancy diversion shell, larynx Body supports plate is provided between the both ends of mouth and the top of water conservancy diversion shell, lower end and the body supports plate of weather shield are fixed, aditus laryngis Interior to be provided with support body, support body is to being provided with secondary supporting plate between two pieces of weather shields.