CN101122414A - Automatic wind-catching natural ventilation device and its ventilation system - Google Patents

Abstract

The invention is an automatic wind-catching natural ventilation device and a ventilation system thereof, which belong to wind energy utilization and energy saving in the air-conditioning, heating and ventilation industry. It mainly includes a wind-facing device (1), an air inlet (2), a movable air inlet pipe (3), a movable exhaust pipe (4), an air outlet (5), a fixed air inlet pipe (6), and a fixed exhaust pipe. tube (7). The wind-facing device is fixedly connected to the movable exhaust pipe, and the movable exhaust pipe and the movable air inlet pipe are connected together through the second connecting rod, and the air outlet on the upper part of the movable exhaust pipe and the air inlet on the upper part of the movable air inlet pipe are 180 layout. The fixed air inlet pipe and the fixed exhaust pipe are fixedly connected through the second connecting rod. The shaft is connected with the movable air inlet pipe through the bearing and the first connecting rod. There is a dynamic connection between the movable air inlet pipe and the fixed air inlet pipe, and a dynamic connection between the movable air exhaust pipe and the fixed air exhaust pipe. The system automatically tracks the dominant wind direction of the outdoor wind through the automatic wind-catching natural ventilation device installed outdoors to realize natural ventilation indoors and outdoors.

Description

Automatic wind-catching natural ventilation device and its ventilation system

technical field

The invention relates to an automatic wind-catching natural ventilation device and a ventilation system thereof, belonging to wind energy utilization and energy saving in the air-conditioning, heating and ventilation industry.

Background technique

In the 100 years of rapid development of air-conditioning technology, the natural ventilation used by human ancestors to regulate the indoor environment has been gradually replaced by the mechanical ventilation of modern civilization. At the same time, the energy consumed by buildings is also increasing. In recent years, with the rise of energy consumption and environmental issues, and under the dual pressure of saving energy and maintaining good indoor air quality, scientists around the world, especially European scientists, have begun to re-examine natural ventilation technology.

The mechanism of natural ventilation is mainly to use the wind pressure or heat pressure generated by non-mechanical power to discharge indoor dirty air or waste heat to the outside, and continuously replenish clean outdoor fresh air to the room to maintain a better indoor environment. quality. Natural ventilation (Natural Ventilation) is a relatively economical ventilation method. It does not consume power and can obtain a large amount of ventilation and air exchange. It is simple and easy to implement, saves energy and is conducive to environmental protection. It is widely used in industry and civil use under construction.

With the continuous development of construction technology, one of the biggest features of new buildings is high thermal insulation and high air tightness. For air-conditioned (heating) rooms, high air tightness is undoubtedly conducive to energy saving; but it is unfavorable for the guarantee of indoor air quality. In order to ensure the air quality of the indoor environment, outdoor fresh air must be continuously sent into the room. Obviously, it will be the best way to save energy if natural ventilation can be used to solve the ventilation problem of highly airtight buildings with little or no mechanical power. Many areas in my country have good wind energy utilization conditions, especially in some monsoon climate areas, where the wind direction varies significantly in seasons, with northerly winds prevailing in winter and southerly winds prevailing in summer. For this type of area, if the characteristics of the monsoon can be better utilized, it will be possible to use natural ventilation to solve the ventilation problem of highly airtight buildings.

Contents of the invention

The present invention proposes an automatic wind-catching natural ventilation device and its ventilation system. The system automatically tracks the dominant wind direction of the outdoor wind through the automatic wind-catching natural ventilation device installed outdoors (roof), and realizes indoor and outdoor natural ventilation.

In order to achieve the above object, the present invention adopts the following technical solutions. The device mainly includes a wind-facing device 1, an air inlet 2, a movable air inlet pipe 3, a movable exhaust pipe 4, an air outlet 5, a fixed air inlet pipe 6, a fixed exhaust pipe 7, a shaft 9, a bearing 10, a A connecting rod 11 and a second connecting rod 12 . Wherein, the wind-facing device 1 is fixedly connected with the movable exhaust pipe 4, and the bottom of the movable exhaust pipe 4 is connected with the bottom of the movable air inlet pipe 2 through the second connecting rod 12, and the exhaust pipe 4 top of the movable exhaust pipe 4 is connected together. The tuyere 5 and the air inlet 3 on the upper part of the movable air inlet pipe 2 are arranged at 180 degrees to each other; the fixed air inlet pipe 6 and the fixed exhaust pipe 7 are fixedly connected through the second connecting rod 12; the shaft 9 passes through the bearing 10, the first connecting rod 11 is connected with the movable air inlet pipe 2; the bottom of the movable air inlet pipe 3 is dynamically connected with the fixed air inlet pipe 6, and the bottom of the movable air exhaust pipe 4 is dynamically connected with the fixed air exhaust pipe 7.

There is a connecting flange 8 on the fixed exhaust pipe 7, and the connecting flange 8 is provided with a through hole for placing a balance screw 13 along the circumferential direction.

The working process and principle of this device are as follows: When the outdoor wind acts on the wind-facing device 1, no matter whether the air inlet 2 of the movable air inlet pipe 3 is located in the upwind direction or in the downwind direction, this device continuously and automatically searches for the incoming flow direction, All can make the movable air inlet pipe 3 adjust the rotation angle until the air inlet 2 is aligned with the incoming flow direction, and make the air entering the air inlet 2 generate a certain driving force (dynamic pressure) in the positive pressure area formed on the windward side; at the same time, Since the movable exhaust pipe 4 and the movable air inlet pipe 3 are conjoined, and the air inlet 2 and the air outlet 5 are at 180 degrees to each other, the air outlet 5 is also automatically positioned on the leeward side and aligned with the downwind direction, realizing a natural The automatic wind capture of the ventilation device; the outdoor air with a certain driving force (dynamic pressure) enters the building through the fixed air inlet pipe 6 and its connecting flange 8 which are dynamically matched with the movable air inlet pipe 3; in addition, due to the active air exhaust The air exhaust port 5 of the pipe 4 is located in the leeward side vortex negative pressure area (leeward side) to form a suction force, which can pass the dirty air in the building room through the movable exhaust pipe 4 and the air outlet that are dynamically matched with the fixed exhaust pipe 7 5. It is drawn out of the outside and arranged to the downwind direction, realizing the unpowered natural ventilation of the air in the building room; the 360-degree rotation of the movable air inlet pipe 3 and the movable exhaust pipe 4 passes through the shaft 9, the bearing 10, and the first connecting rod 11. The second connecting rod 12 is realized. The balance screw rod 13 is used to ensure a reasonable gap between the movable part and the fixed part.

The automatic wind-catching natural ventilation device and its ventilation system proposed by the present invention automatically track the dominant wind direction of the outdoor wind through the automatic wind-catching natural ventilation device installed outdoors (roof), 1) make the ventilation air inlet always be located in the windward direction, And through the driving force produced by the natural wind pressure, the outdoor fresh air is sent to the room through the ventilation system connected with the automatic wind-catching natural ventilation device, so as to realize the natural ventilation in the room without power; 2) make the ventilation outlet always be located On the leeward side, use the draft force formed by the vortex negative pressure area on the leeward side to discharge the dirty air in the building to the outside along the ventilation and exhaust system through the automatic wind-catching natural ventilation device, so as to realize natural ventilation in the unpowered room.

Description of drawings

Figure 1 Schematic diagram of the automatic wind-catching natural ventilation device

In the figure: 1. Wind device, 2. Air inlet, 3. Movable air inlet pipe, 4. Movable exhaust pipe, 5. Air exhaust outlet, 6. Fixed air inlet pipe, 7. Fixed exhaust pipe, 8. Connecting flange, 9, shaft, 10, bearing, 11, first connecting rod, 12, second connecting rod, 13, balance screw, 14, connect indoor air inlet, 15, connect indoor air exhaust.

Detailed ways

This embodiment will be described in detail below with reference to FIG. 1 .

The technical design adopted by the automatic wind-catching natural ventilation device (air intake/exhaust dual-purpose type) is shown in Figure 1: the device includes a wind-facing device 1, a movable air inlet pipe 3, an air inlet 2, a movable exhaust pipe 4, Air outlet 5, fixed air inlet pipe 6, fixed exhaust pipe 7, connecting flange 8, shaft 9, bearing 10, first connecting rod 11, second connecting rod 12, balance screw 13 and other components. The wind-facing device 1 and the movable exhaust pipe 4 are fixedly connected; the movable exhaust pipe 4 and the movable air inlet pipe 2 are connected together through the second connecting rod 12 . The connecting flange 8 is connected with the fixed exhaust pipe 7; the fixed air inlet pipe 6 and the fixed exhaust pipe 7 are connected together through the second connecting rod 12; the shaft 9 and the bearing 10 are connected with the movable air inlet through the first connecting rod 11. Pipe 3 and fixed air inlet pipe 6 are connected together. The balance screw 13 cooperates with the connecting flange 8 and is used to adjust the reasonable gap between the movable part and the fixed part.

In this embodiment, the movable air inlet pipe 3 is arranged inside the movable air exhaust pipe 4 , and forms a coaxial connection with the movable air exhaust pipe, and can rotate around the axis 9 together. The fixed air inlet pipe 6 is arranged inside the fixed air exhaust pipe 7 , and after the fixed air inlet pipe 6 and the fixed air exhaust pipe 7 are fixedly connected by the first connecting rod 11 , they form a fixed connection with the shaft 9 .

Be dynamic connection between the movable air inlet pipe 3 and the fixed air inlet pipe 6, namely the movable air inlet pipe 3 and the fixed air inlet pipe 6 junction leave a gap so that the movable air inlet pipe 2 can rotate around the axis 9. There is also a gap at the connection between the movable exhaust pipe 4 and the fixed exhaust pipe 7, so that the movable exhaust pipe 4 can also rotate around the axis 9.

The other end of the fixed air inlet pipe 6 is to connect the indoor air inlet 14, and the other end of the fixed air exhaust pipe is to connect the indoor air outlet 15.

The automatic wind-catching natural ventilation device constructed in this embodiment utilizes the principles of natural ventilation and mechanical design to integrate the air inlet and the air outlet, and utilizes the special mechanical structure characteristics of the device (see the accompanying drawings) to make the air inlet It can always capture the dominant wind direction and be in the positive pressure area of incoming flow (windward side), and make the air outlet always be in the vortex negative pressure area (leeward side) of the leeward side at the same time. Utilizing the driving force generated by the positive pressure area formed by the dominant wind direction on the windward side, the pipeline resistance can be overcome, and the outdoor fresh air can be sent into the building through the automatic wind-catching natural ventilation device along the ventilation and air supply system; The draft force formed can discharge the dirty air in the building along the ventilation and exhaust system to the downwind side of the air inlet through the automatic wind-catching natural ventilation device to avoid mutual pollution, and can also recover the waste heat of the exhaust air through the heat recovery device. fresh air.

Claims (2)

1. The automatic wind-catching natural ventilation device and its ventilation system are characterized in that: it mainly includes a wind-facing device (1), an air inlet (2), a movable air inlet pipe (3), a movable air exhaust pipe (4), an exhaust tuyere (5), fixed air inlet pipe (6), fixed exhaust pipe (7), shaft (9), bearing (10), first connecting rod (11) and second connecting rod (12); wherein, The wind-facing device (1) is fixedly connected with the movable exhaust pipe (4), and the lower part of the movable exhaust pipe (4) is connected with the lower part of the movable air inlet pipe (2) through the second connecting rod (12), and the The air outlet (5) on the upper part of the movable exhaust pipe (4) and the air inlet (3) on the upper part of the movable air inlet pipe (2) are mutually arranged at 180 degrees; the fixed air inlet pipe (6) and the fixed exhaust pipe (7) ) is fixedly connected through the second screw rod (12); the shaft (9) is connected with the movable air inlet pipe (2) through the bearing (10) and the first screw rod (11); the lower part of the movable air inlet pipe (3) is connected with the fixed inlet pipe The air ducts (6) are dynamically connected, and the bottom of the movable exhaust duct (4) and the fixed exhaust duct (7) are dynamically connected. 2. The automatic wind-catching natural ventilation device and its ventilation system according to claim 1, characterized in that: there is a connecting flange (8) on the fixed exhaust pipe (7), and the connecting flange (8) is along the circumferential direction A through hole for placing a balance screw (13) is provided.

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