CN216769667U - A self-seeking negative pressure ventilator - Google Patents

Abstract

The utility model discloses a self-seeking negative pressure ventilator, which can be used for the parts that need long-term exhaust air, such as the air outlet at the top of the building, the air outlet in the tunnel, the air outlet in the mine, etc. The sliding baffle is in the shape of a circular tube, and its side wall is provided with a vent; the arc-shaped louver is arranged in the sliding baffle; the arc-shaped louver is connected with the inner ring of the bearing, and the sliding baffle is connected with the outer ring of the bearing; umbrella The umbrella-shaped hood is fixedly installed on the top of the sliding baffle, and a guide plate is fixedly installed on the umbrella-shaped hood. The utility model has a simple structure. When there is wind flow outdoors, the umbrella-shaped hood and the sliding baffle plate will be combined with the guiding function of the guide vanes to partially block the incoming wind in any horizontal direction of the ventilator, thereby increasing the ventilation rate of the ventilator. The exposed area of the negative pressure area on the top, side and back can make full use of negative pressure to discharge the air inside the building to the outside, and the work is reliable.

Description

A self-seeking negative pressure ventilator

technical field

The utility model relates to an energy-saving ventilation device, which is a self-seeking negative pressure ventilator. It can be used for long-term exhaust air vents, tunnel vents, and mine vents.

Background technique

Natural ventilation is to improve the huge ventilation volume, improve the air quality inside artificial structures, reduce the occurrence of air-related diseases, and at the same time do not consume any artificial energy, and is widely used in buildings, tunnels, mines and other fields. On the one hand, some rooms in the building, such as toilets, bathrooms, kitchens, etc., require continuous ventilation. On the other hand, scenes such as tunnels and mines also require continuous ventilation. However, the energy consumption of mechanical exhaust fans is huge. How to reduce these energy consumption has become an important research direction.

Natural ventilation is mainly driven by the principle of thermal pressure ventilation and wind pressure ventilation. The latter uses the pressure difference between the inside and outside of the structure formed by the movement of the near-earth atmosphere to drive the airflow in and out. However, due to the continuous change of the outdoor wind direction, the wind pressure ventilation has a high degree of Instability, air supply, exhaust, and ventilation are often difficult to control, resulting in failure to meet design requirements. In buildings, tunnels, mines and other scenes, many scenes hope to obtain a continuous exhaust effect. Therefore, how to obtain a continuous exhaust effect under the premise of no power has become the focus of this technology.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the utility model provides a self-seeking negative pressure ventilator with simple structure and reliable operation, which can make the windward surface of the ventilator always in a blocking state through guide vanes according to the principle of aerodynamics; , The left and right sides and the leeward side are always in an open state to maintain negative pressure, thereby generating a suction effect and achieving a continuous exhaust effect.

The technical scheme of the utility model to solve the above problem is: a self-seeking negative pressure ventilator, which includes an umbrella-shaped hood, an arc-shaped louver and a sliding baffle; The arc-shaped louver is arranged in the sliding baffle; the arc-shaped louver is connected with the inner ring of the bearing, and the sliding baffle is connected with the outer ring of the bearing; the umbrella-shaped air cap is fixedly installed on the top of the sliding baffle, and the umbrella-shaped air cap is fixedly installed with a guide plate .

Further, two cross-shaped brackets are fixedly installed in the arc-shaped louver, and the centers of the two cross-shaped brackets support the rotating shaft through bearings; the upper end of the rotating shaft is fixedly connected with the center of the umbrella-shaped hood.

Further, the ventilation opening of the sliding baffle is rectangular, and the guide plate is perpendicular to the ventilation opening of the sliding baffle.

Further, the surfaces of the umbrella-shaped hood, the polygonal guide plate, the sliding baffle, the arc-shaped louver, and the bearing are all coated with an anti-corrosion coating.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The structure of the present utility model is simple. The guide plate of the present utility model is connected with the umbrella-shaped hood and the sliding baffle. The negative pressure is used to make the sliding baffle block the positive wind all the time when there is a wind flow outside, so that the equipment Self-direction, reliable work, and the device does not use excess energy supply, green and low-carbon.

2. The utility model is provided with a sliding baffle, which can surround half of the arc-shaped louver, and the self-direction effect of the utility model can block the positive incoming wind and increase the air flow in the negative pressure area. Expose the area, and use the pressure difference to increase the exhaust air volume.

3. The utility model is provided with an arc-shaped louver, which increases the contact area with the negative pressure area and maximizes the use of the pressure difference. The shape of the arc-shaped louver can block rainwater while increasing the contact area with the negative pressure area, and play a rainproof effect.

Description of drawings

Fig. 1 is the front view of the utility model.

FIG. 2 is a perspective view of the present invention from a first perspective.

FIG. 3 is a perspective view of the second viewing angle of the present invention.

Figure 4 is a cross-sectional view of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1-4 , the utility model includes an umbrella-shaped hood 1 , a guide plate 2 , a sliding baffle 3 , an arc-shaped louver 4 , a rotating shaft 5 , a cross-shaped bracket 6 and a bearing 7 . The sliding baffle 3 and the arc-shaped louvers 4 are in the shape of a circular tube, and a rectangular vent is provided on the side wall of the sliding baffle 3 . The arc-shaped louver 4 is arranged in the sliding baffle 3 ; the arc-shaped louver 4 is connected with the inner ring of the bearing 7 , and the sliding baffle 3 is connected with the outer ring of the bearing 7 . The umbrella-shaped hood is fixedly installed on the top of the sliding baffle, and a guide plate 2 is fixedly installed on the umbrella-shaped hood 1 . The guide plate 2 is a polygonal plate-like structure, which is perpendicular to the ventilation opening of the sliding baffle 3 . A cross-shaped bracket 6 is fixedly installed in the inner top and middle of the arc-shaped louver 3, and the centers of the two cross-shaped brackets 6 support the rotating shaft 5 through a bearing; the upper end of the rotating shaft 5 is fixedly connected with the center of the umbrella-shaped hood 1. .

The umbrella-shaped hood 1 is arranged on the top of the ventilator, and plays the role of shielding rainwater for the utility model. The polygonal guide plate 2 arranged on the umbrella-shaped hood 1 will drive the sliding baffle 3 to rotate when there is wind outside, until the sliding baffle 3 blocks the incoming wind and plays a guiding role. The rotating shaft 5 fitted with the umbrella-shaped hood 1 supports the umbrella-shaped hood 1 . The cross-shaped brackets 6 arranged in the middle and the top of the rotating shaft 5 support the rotating shaft 5 and make the rotating shaft 5 more stable. The arc-shaped louver 4 fixes the cross-shaped bracket 6, which increases the exposed area in the negative pressure area, and also plays the role of shielding rainwater. The inner ring of the bearing 7 at the bottom of the arc-shaped louver 4 is connected, the outer ring of the bearing 7 is connected with the sliding baffle 3, and the inner ring is connected with the arc-shaped louver 4, so that the process of self-direction can be smoothly completed. The sliding baffle 3 is connected with the umbrella-shaped hood 1, surrounds the arc-shaped louver 4, and the bottom is connected with the outer ring of the bearing 7, which plays the role of blocking the incoming wind and at the same time shielding the rainwater.

The sliding baffle 3 is arranged on the outside of the arc-shaped louver 4, and the upper part of the sliding baffle 3 is connected with the umbrella-shaped hood 1, and the lower part is connected with the outer ring of the bearing 7, relying on the polygonal guide plate 2 on the umbrella-shaped hood 1 and the bearing 7, It can always block the positive wind, prevent the positive wind from disturbing the ventilation process of the structure, and at the same time play the role of shielding the rainwater. The surfaces of the umbrella-shaped hood 1, the polygonal guide plate 2, the sliding baffle 3, the arc-shaped louvers 4 and the bearing 7 are all coated with anti-corrosion coating, which reduces the risk of damage and prolongs the service life.

The function of the guide plate 2 of the present invention is to make the ventilator change with the outdoor wind direction to ensure that the windward side is always in a blocking state, that is, the ventilation opening of the sliding baffle 3 is always on the leeward side. At the same time, the upper surface and the leeward surface of the sliding baffle 3 are always in an open state to form a continuous negative pressure, thereby generating a suction effect and achieving a continuous exhaust effect.

Claims (4)

1. A self-seeking negative pressure ventilator, characterized in that: it comprises an umbrella-shaped hood (1), an arc-shaped louver (4) and a sliding baffle (3); A vent is provided on the wall; the arc-shaped louver (4) is arranged in the sliding baffle (3); the arc-shaped louver (4) is connected with the inner ring of the bearing (7), and the sliding baffle (3) is connected with the bearing (7) The umbrella-shaped air cap (1) is fixedly installed on the top of the sliding baffle plate (3), and the umbrella-shaped air cap (1) is fixedly installed with a guide plate (2). 2. The self-seeking negative pressure ventilator according to claim 1, wherein two cross-shaped brackets (6) are fixedly installed in the arc-shaped louver (4), and the two cross-shaped brackets (6) The center of the rotating shaft (5) is supported by a bearing; the upper end of the rotating shaft (5) is fixedly connected with the center of the umbrella-shaped hood (1). 3 . The self-seeking negative pressure ventilator according to claim 1 , wherein the ventilation opening of the sliding baffle ( 3 ) is rectangular, and the guide plate ( 2 ) is perpendicular to the ventilation opening of the sliding baffle ( 3 ). 4 . 4. The self-seeking negative pressure ventilator according to claim 1, characterized in that: the umbrella-shaped hood (1), the guide plate (2), the sliding baffle (3), the arc-shaped louver (4), the bearing (7) The surface is coated with anti-corrosion coating.

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