JPH01318834A - Ventilating device - Google Patents

Abstract

PURPOSE:To protect ventilating efficiency from lowering even if temperature difference between the indoor and the outdoor is small by providing a wind direction plate for receiving wind to turn an exhaust hole downwind and a ventilating nozzle for contracting a flow of largely taking-in wind to blow out in the exhaust hole in a rotable ventilating device body. CONSTITUTION:In the ventilating device 1, an air intake hole 4 is provided downward and an exhaust hole 5 is set laterally, a wind direction plate 15 for receiving wind to turn the exhaust hole 5 downwind and a ventilating nozzle 16 are provided in a rotably attaching ventilating device body 2, said ventilating nozzle 16 has a wind intake hole 18 and a blowing-out hole 18 for contracting a flow of blowing-in wind to blow out toward the exhaust hole 5 from the inside, and penetrated to attach to outer wall of the windward side of the body 2. The above ventilating device 1 always turns the exhaust hole 5 downwind and easily performs exhaust while an intake hole 17 of the ventilating nozzle 16 is turned windward, enlarges a wind taking-in quantity maximum, contract a flow to blow out and utilize wind to obtain ventilating power even if the temperature difference between the indoor and the outdoor is small.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Use] The present invention relates to a ventilation system, and more particularly to a ventilation system that uses natural wind as power.

[Conventional technology]

There are two ways to ventilate indoor air: those that use power and those that do not. Generally speaking, axial flow blowers, multi-blade blowers (sirocco fans), etc. are mainly used as devices that utilize power, but when comparing and contrasting these, the same person found that it is difficult to increase the required static pressure. There are flaws,
Further, in the latter case, since the inflow direction and the air discharge direction are perpendicular to each other, there is a drawback that various equipment such as ducts are complicated and expensive. And blowers that use either type of power,
There is a problem in that it requires power costs.

In this regard, ventilation means that do not require power usually include a wind direction plate that directs the ventilation opening toward the leeward and is rotatably attached to facilitate ventilation, and also utilizes natural convection due to the temperature difference between indoors and outdoors. There are things like that.

[Problem that the invention seeks to solve]

The above-mentioned ventilation system that does not use power has low equipment costs and
On the one hand, running costs can be reduced, and as mentioned above, ventilation efficiency is high in winter when the outside temperature is low because it takes advantage of the temperature difference between indoors and outdoors, but ventilation efficiency decreases in summer when the temperature difference is small. There is a problem with doing so.

Therefore, the present invention has been made by focusing on the above-mentioned problems, and uses a ventilation means that does not use external power in the summer, and even when the temperature difference between indoors and outdoors is small, it uses natural wind to improve ventilation efficiency. The purpose is to provide a ventilation system with means that does not reduce the

[Means to solve the problem]

The configuration of the ventilation device of the present invention to achieve the above object is that an air intake port is provided below and an exhaust port is provided in the horizontal direction, and the ventilation device body is rotatably attached to the ventilation device body, and the ventilation device is provided with an air intake port in the lower direction and an exhaust port in the horizontal direction. A wind direction plate and a ventilation nozzle are provided that rotate toward the leeward, and the ventilation nozzle has a wind inlet and an outlet that constricts the blown wind and blows it out from the inside toward the exhaust outlet, Moreover, it is characterized in that it is attached by penetrating the outer wall on the windward side of the main body.

The air intake port provided below the ventilation device main body (hereinafter referred to as main body) is arranged in a duct that guides air to be exhausted from the room to be ventilated.

The wind direction plate, which rotates the main unit by the force of the wind, generates the force that rotates the wind outlet of the ventilation nozzle to face upwind and the exhaust outlet to face downwind, and it rotates the main body with the wind speed as low as possible. Preferably, the body is designed to rotate. Further, it is preferable to attach the wind direction plate in such a way that when the wind direction plate receives wind from the side, the force generated in the wind direction plate is more effectively converted into rotational force. Furthermore, in order to make it easier to follow when the wind direction changes, it is also effective to have two wind direction plates open toward the leeward.In order to prevent the main body from floating up due to rotation, It is also possible to have a shape that applies a force that presses the member downward.

The ventilation nozzle utilizes the property of high-speed airflow sucking and driving surrounding air, and in order to increase suction power, the air flowing into the air outlet is contracted and ejected toward the exhaust port. The shape of the dust is usually conical, but it is not limited to this.

For example, in order to further increase the effect, it may be made streamlined, or the cross-sectional shape may be made other than circular.

It is preferable that the main body has a shape that provides less resistance to the flow of air to be discharged so as to reduce resistance to the wind, and is manufactured so that the center of gravity of the main body is on the axis of rotation.

[For production]

The ventilation system with the above configuration always has the exhaust port facing downwind to facilitate exhaust, and the inlet of the ventilation nozzle to the windward to maximize the amount of air taken in. By blowing out air, even when the temperature difference between indoor and outdoor is small, ventilation power can be obtained using the wind.

〔Example〕

Hereinafter, the present invention will be described in detail by way of an embodiment with reference to the accompanying drawings.

FIG. 1 is a sectional view of the ventilation system of this embodiment, FIG. 2 is a view as seen from the wind inlet side, and FIG. 3 is a view as seen from the exhaust port side. In the figure, a ventilation system 1 consists of a main body 2 and a duct 3 forming a frame thereof.

ffff The main body 2 has a circular cross section and consists of a duct bent at right angles to form an arc between an air intake port 4 opening at the lower end and an exhaust port 5 opening laterally.

The duct 3 is installed on a roof (not shown), and is connected to a rotating shaft by an upper bearing 7 attached to a bracket 6 provided in two upper and lower stages, and a lower bearing 8 having two bearing surfaces in the circumferential direction and the axial direction. 10 is supported. Rotating axis 1
0 is fixed to a bracket 11 provided inside the main body 2 to rotatably support the main body 2.

A wide wind direction plate 15 is attached to the upper part of the main body 2, with the width on the exhaust port 5 side being larger and the width on the axis side of the main body 2 being narrower. In addition, the upper surface of the wind direction plate is sloped as shown in the figure to prevent the main body 2 from floating up due to wind pressure.

The conical ventilation nozzle 16 has a wide opening area air inlet 17.
Wind is caused to flow in from the air outlet 18, the wind speed is increased, and the air is blown out from the air outlet 18 toward the exhaust port 5.

In this embodiment, the cross section of the main body 2 @ (air intake 4
and exhaust port 5 have the same area) is approximately 706 crl
, the area of the air outlet 17 and the air outlet 180 of the ventilation nozzle 16 are each 314c1.38crd (contraction rate is approximately 12%)
Then, the blowing power obtained when the wind speed is light at 3 m/sec is 0.5 horsepower, and when the wind speed is 4 m/sec, the blowing power is 1.
We were able to obtain a large exhaust power of 15 horsepower, and were able to efficiently ventilate regardless of the temperature difference between indoors and outdoors.

FIG. 4 shows a modification of the wind direction plate 15.

The wind direction plate 15 shown in the figure has a triangular shape with the base 20 having the windward side as the apex, and has a triangular cross section as shown by the two-dot chain line in the figure. In this way, the main body 2 can be sensitive to changes in the wind direction, and the main body 2 can be prevented from floating due to the force of the wind.

〔Effect of the invention〕

As explained above, the ventilation device of the present invention is provided with an air intake port in the lower part and an exhaust port in the horizontal direction, and the ventilation device is rotatably attached to the main body of the ventilation device. A wind direction plate and a ventilation nozzle are provided, and the ventilation nozzle has a wind inlet and an outlet which constricts the blown wind and blows it out from the inside toward the surface exhaust port. Since it is configured to be attached by penetrating the windward outer wall, the following effects can be achieved.

In other words, even when the temperature difference between the indoor and outdoor spaces being ventilated is small, it is possible to obtain a large ventilation force using natural wind, and since the exhaust vents are always facing downwind, rain does not enter the room. It will be done. Further, since the structure is simple, the number of parts is small, and manufacturing is easy, both supply and maintenance can be made inexpensive, so that it can be implemented industrially advantageously.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a ventilation system according to one embodiment, Figure 2 is a view of the ventilation system body as seen from the inlet side of the ventilation nozzle in Figure 1, and Figure 3 is a view seen from the exhaust outlet side of Figure 1. FIG. 4 is a perspective view of a modified example of the wind direction plate. 1... Ventilator, 2... Ventilator main body (main body), 4
... Air intake port, 5... Exhaust port, 15... Wind direction board, 16... Ventilation nozzle, 17... Wind blowing port, 18
...Air outlet. Applicant: Japan Bioscience Co., Ltd. Figure 1 Figure 3, Figure 1'2 Figure 4

Claims (1)

[Claims] A ventilation device main body is provided with an air intake port in the lower direction and an exhaust port in the horizontal direction, and is rotatably attached to the main body of the ventilation device, and a wind direction plate and a ventilation nozzle are provided to rotate the exhaust port toward the leeward when receiving wind, and the ventilation nozzle is characterized in that it has a wind inlet and an outlet that constricts the blown wind and blows it out from the inside toward the exhaust outlet, and is attached to penetrate the windward outer wall of the main body. ventilation system.