JPH0682249U - Air supply / exhaust cylinder device for wind direction - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an air supply / exhaust cylinder device in which the louver naturally faces the leeward according to the wind direction. [Structure] A rotary sliding member 10 in which a ball bearing C is fitted in a ring-shaped groove B having a concave cross-section is provided at the circular opening end of the air supply / exhaust cylinder A. The chamber 20 is formed to be slightly larger than the diameter of the air supply / exhaust cylinder A, and its upper end is closed by a conical roof 21. An opening with a gallery 22 is provided on the side surface. The lower side of the chamber 20 is bent inward along the peripheral surface to form a groove 23 having a lower opening. Rotating sliding member 10
Fit in this groove 23. A wind vane-shaped wind direction indicator 30 is provided at the tip of the roof 21 so that the side pointing leeward and the direction of the gallery 22 coincide.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a supply / exhaust cylinder device for ventilation installed on a roof or the like, and in particular, it can change the direction of a gallery provided for supply / exhaust.

[0002]

[Prior art]

 In the past, forced ventilation was required with ventilation fans in places where the indoor air was easily polluted, such as in shops and factories. When supplying and exhausting air using a ventilation fan, there was used an air supply and exhaust pipe device in which the inside and outside were connected by an air supply and exhaust pipe, and the tip of the pipe was projected and opened onto the roof of a store or factory. Drained galleries are installed in this projecting opening to prevent rain and small animals such as birds from entering, and the entire air supply / exhaust cylinder projecting on the roof is commonly called a pigeon hut. It was covered with a thing (Fig. 5).

[0003]

[Problems to be solved by the device]

 However, in the conventional air supply / exhaust pipe device, the portion of the air supply / exhaust pipe that is projectingly opened on the roof is fixed, so the air supply / exhaust direction is limited to one direction. Therefore, when the direction of the louver turned to the windward side due to the change of the wind direction, the wind flowed from the louver and the exhaust gas did not progress, rather the exhaust fan was overloaded. Also, in the event of a storm, rainwater also invaded with the wind. Therefore, an object of the present invention is to provide an air supply / exhaust cylinder device in which a gallery naturally faces leeward depending on the wind direction.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, in a supply / exhaust cylinder device in which indoors and outdoors are communicated so that supply / exhaust can be performed, a cylindrical shape in which the upper end surface is blocked by a rotating sliding member on the top of the supply / exhaust cylinder The chamber is covered, a gallery for air supply and exhaust is provided in one place on the side of the chamber, and a wind direction indicator is provided outside the chamber, and the leeward direction side of the wind direction indicator is aligned with the gallery. There is. Further, in an air supply / exhaust tube device in which the indoor and the outdoor are communicated so that air supply / exhaust can be performed, the top of the air supply / exhaust tube is covered with a cylindrical chamber via a sliding member for rotation, and the upper part of the chamber is covered. A streamlined hood having a front end facing the wind was provided, and a gallery for air supply and exhaust was provided on the rear end side of the hood.

[0005]

[Action]

 According to the present invention, since the tubular chamber is provided on the top of the air supply / exhaust pipe via the rotating sliding member, the chamber provided on the top of the air supply / exhaust pipe can be rotated. In addition, since the upper end of the cylindrical chamber is closed and a gallery for air supply and exhaust is provided on the side of the chamber, indoor and outdoor air can enter and exit through the gallery while preventing rainwater and small animals from entering. can do.

Further, since the wind direction indicator is provided outside the chamber and the leeward direction side of the wind direction indicator is aligned with the louver on the side surface of the chamber, it follows the wind direction indicator that rotates according to the direction of the wind. The chamber rotates and the gallery on the side of the chamber can be turned to the leeward side. On the other hand, in a device in which a streamlined hood is provided on the upper part of the chamber covered by the rotation / slip member via a rotation sliding member and a supply / exhaust gallery is provided on the rear end side of the hood, the streamlined hood is a streamlined hood. When the wind hits the tip of the hood, air resistance causes the hood tip to point in the direction of less resistance, and the streamline-type leeward rear surface becomes lower than atmospheric pressure and the air pressure difference from the hood pressure improves the exhaust effect.

[0007]

【Example】

 (Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. 1 (a), 1 (b) and 1 (c). The air supply / exhaust cylinder A is formed in a cylindrical shape and protrudes above the roof, and serves as an air flow path that communicates indoors and outdoors. The top of the air supply / exhaust cylinder A protruding above the roof has a circular opening end. At the opening end of this circular shape, there is provided a ring-shaped rotating sliding member 10 which is fitted into a groove B formed in a ring shape having a substantially concave cross section so that the ball bearing C can rotate. On the other hand, the chamber 20 is formed to have a diameter slightly larger than the diameter of the air supply / exhaust cylinder A, and the upper end is closed by a conical roof 21. Furthermore, an opening is provided on the cylindrical side surface of the chamber 20, and a gallery 22 in which a plurality of thin plates are vertically attached in parallel to each other at regular intervals is provided in the opening.

The lower side of the cylindrical chamber 20 is bent inward along the peripheral surface, and is further reversely bent again to form a groove 23 of a lower opening having a convex cross-section. The groove 23 formed in the ring shape along the peripheral surface of the cylinder of the chamber 20 has the diameter of the groove 23 so that the rotary sliding member 10 can be just fitted into the groove 23. It is set. Therefore, by covering the ring-shaped groove 23 of the cylindrical chamber 20 on the rotary sliding member 10 provided at the top of the supply / exhaust cylinder, the ball bearing C of the rotary sliding member 10 allows the chamber 20 to freely move. Can be rotated.

A wind direction indicator 30 is attached to the tip of the conical roof 21 of the chamber 20. In this example, the wind direction indicator 30 was formed in a weathervane shape. The wind direction indicator 30 has two tail blades from the left and right on one tail 30b of a flat weathercock so that the head 30a of the weathercock faces the windward and the tail 30b of the weathercock faces leeward. The flat materials are provided with the ends open. The wind direction indicator 30 is attached such that the direction of the tail portion 30b matches the direction of the gallery 22 provided on the side surface of the chamber 20. For this reason, the wind direction indicator 30 of this weathercock type rotates together with the chamber 20 at the top of the air supply / exhaust pipe A in accordance with the wind, and the louver 22 on the tail portion 30b side of the weathercock points downwards. It The flow of wind is indicated by arrows in the figure.

Second Embodiment A second embodiment will be described with reference to FIGS. In the second embodiment, the same air supply / exhaust cylinder A as that described in the first embodiment is used. Therefore, on the cylindrical top of the air supply / exhaust cylinder A, there is provided the rotating sliding member 10 having the ball bearing C as described above. On the other hand, the chamber 40 is formed in a cylindrical shape slightly larger than the bore of the air supply / exhaust pipe A, and the portion below the chamber 40 that is combined with the rotation sliding member 10 of the air supply / exhaust pipe A is the chamber of the first embodiment. It is formed in the same structure as the lower side of 20.

The upper surface of the cylindrical chamber 40 is closed by a circular top plate 41 that matches the circular end surface of the chamber 40, and a triangular opening 42 is provided on the top plate 41. The triangle of the opening 42 is formed as an equilateral triangle with one vertex inscribed in the circular periphery of the top plate 41. The opposite side 42a to the inscribed apex is set to be the opening side of the rear end of the hood 50 described later. Further, the peripheral portion of the top plate 41 on the opening side is formed so as to be connected to the cylindrical side surface of the chamber 40 with a gently curved surface.

Further, two sides of a triangle sandwiching the opposite side 42a are extended to a point that is inscribed in the peripheral edge of the top plate 41, rise from these two sides, and a streamlined hood 50 having the opposite side 42a as the front opening side is installed in the ceiling. It is formed on the plate 41. The outer shape of the hood 50 is an equilateral triangle whose bottom surface is inscribed in the circular edge of the top plate 41, and the side cross section that passes through the inscribed apex of the triangle of this bottom surface and intersects perpendicularly with the opposite side 42a is parabolic and parallel to the bottom surface. The flat cross-section is an equilateral triangle, and the vertical cross-section parallel to the opening face that stands upright on the opposite side 42a is formed in a streamlined shape so that it is set in an arch shape.

On the arch-shaped opening surface on the opposite side 42a of the hood 50, there is provided a gallery 51 in which a plurality of thin plates are attached vertically and in parallel at regular intervals. Since the hood 50 is formed in the streamlined shape, the chamber 40 is rotated around the air supply / exhaust cylinder A by the rotating sliding member 10 so that the streamlined surface having less air resistance with respect to the direction of the wind faces the windward side. It rotates so that the louver 51 faces the leeward side. The wind flow is indicated by arrows in the figure.

The present invention is not limited to the above-described first and second embodiments. For example, the rotary sliding member 10 does not use the ball bearing C in the ring-shaped concave groove B at the top of the air supply / exhaust cylinder A. A plurality of small wheels may be rotatably provided so that the covered chamber can rotate. In addition, a part of this wheel can be configured to turn on and off the transmission of the torque of the motor with a clutch, etc., and the rotation direction of the gallery can be freely selected regardless of the wind direction. May be allowed. Further, the wind direction indicator as shown in the first embodiment may be provided on the hood of the second embodiment.

[0015]

[Effect of device]

 In the air supply / exhaust tube device according to the present invention, since the direction of the louver provided on the air supply / exhaust tube is directed to the leeward side, unlike the conventional case, wind and rain are blown from the gallery even in strong winds or storms. I no longer have to worry. In particular, at the time of exhaust, the louver is directed to the leeward direction, so that the exhausted air or the wind causes the leeward flow to improve the exhaust efficiency.

[Brief description of drawings]

FIG. 1 is a side sectional view (a) of an air supply / exhaust cylinder device according to a first embodiment. The partial enlarged view (b) which showed the combination condition of the sliding member for rotation and the chamber enclosed by the dotted line of FIG. FIG. 3C is a plan view of the air supply / exhaust cylinder device according to the first embodiment.

FIG. 2 is a perspective view of a chamber and a hood of the air supply / exhaust cylinder device according to the second embodiment.

FIG. 3 is an explanatory plan view of the air supply / exhaust cylinder device according to the second embodiment.

FIG. 4 is a side cross-sectional view of the air supply / exhaust cylinder device according to the second embodiment.

FIG. 5 is a cross-sectional view of a conventional air supply / exhaust cylinder device.

[Explanation of symbols]

 10 Rotating Sliding Member 20 Chamber 22 Gallery 30 Wind Direction Indicator 40 Chamber 50 Hood 51 Gallary A Supply / Exhaust Cylinder C Ball Bearing

Claims (2)

[Scope of utility model registration request] 1. In an air supply / exhaust cylinder device in which indoors and outdoors are communicated so that air supply / exhaust can be performed, a top and bottom of the air supply / exhaust cylinder is covered with a cylindrical chamber whose upper end surface is closed via a rotary sliding member. In addition, a gallery for air supply and exhaust is provided at one place on the side surface of the chamber, a wind direction indicator is provided outside the chamber, and the leeward direction side of the wind direction indicator is aligned with the gallery. Air supply / exhaust cylinder device for wind direction. 2. In a supply / exhaust cylinder device in which indoors and outdoors are communicated so that supply / exhaust can be performed, a cylindrical chamber is covered on the top of the supply / exhaust cylinder via a sliding member for rotation, and at the top of the chamber. A supply / exhaust cylinder device with a rotary louver, characterized in that a streamlined hood having a front end facing the wind is provided, and a gallery for supply / exhaust is provided on the rear end side of the hood.