JPH04103953A - Hot-air exhausting damper - Google Patents

Abstract

PURPOSE:To keep the cooling efficiency of an air-conditioner in a good condition by naturally exhausting hot-air in an interior space, by a method wherein a cover lid is placed on an opening on the side of the outside air of a cylindrical hollow body and a cylindrical attracting- plate is arranged at the position in the vicinity of the opening on the side of the outside air there of. CONSTITUTION:An attracting plate 32 is formed of a cylindrical body 32a which is concentrically placed at the periphery of a cylindrical hollow body 16 and a radial clearance is formed and is supported by three bars 34 projected at radially symmetrical positions on the cylindrical hollow body 16. Under a condition under which a cover lid 20 is lifted at an opening 14 on the side of the outside air and the cylindrical hollow body 16 is opened, the air flowing in any direction on the upper part of the attracting plate 32 enters a clearance between the cover lid 20 and the opening 14 of the cylindrical hollow body 16, and the air swirls by this attracting plate 32 and passes again outwards. By a negative pressure caused by a vortex at that time, hot-air staying in an interior is attracted and exhausted through an opening 12 on the side of the interior of the cylindrical hollow body 16. In this way, even if the air flows in any direction, it is possible to exhaust the hot-air, and since the cover lid 20 is in plane, round shape and has an outer diameter of which the size can close the opening 14, raindrops can be prevented from entering through the attracting plate 32.

Description

[Detailed Description of the Invention] 10. Purpose of the Invention (1) Industrial Application Field The present invention is intended for naturally exhausting air stagnant inside a building or inside a dome or the like provided for daylighting inside a building. (2) Conventional technology In recent years, along with the fashion and luxury of buildings, roof surfaces of houses have become more popular in order to improve the sunlight absorption and keep indoors and buildings bright. The number of buildings such as corridor-type buildings and sidewalk arcades in which translucent boards are installed on the roof of the building or whose roofs are made of translucent boards is increasing. To exhaust indoor air from formal buildings, etc.
Ventilation is achieved by drilling holes in the side walls of these buildings and installing dampers in these holes to ventilate the internal air, or by installing exhaust fans on the roofs and side walls.

(3) Problems to be solved by the invention However, in exhaust dampers installed on the side walls of corridor-type buildings and arcade-type buildings that place emphasis on daylighting, sunlight can cause damage to the inside of the ceiling of the building. Even if an exhaust damper is installed on the side wall surface, excess hot air accumulates, resulting in poor cooling efficiency of the air conditioner, especially in the summer (and therefore, the power load on the air conditioner itself is high). In addition, ventilation methods that use mechanical power such as exhaust fans have problems such as the generation of noise from the exhaust fan or air terminals, increased energy costs, and increased facility costs. The present invention has been made in view of the above-mentioned problems of the conventional art, and its purpose is to provide a lid that can be opened and closed at least on the outside air side opening of a hollow cylindrical body, which is disposed at least on the roof surface of a building and in the vicinity thereof. At the same time, a cylindrical induction plate is placed near the outside air side opening of the hollow cylinder, and by drawing the internal air to the outside and naturally exhausting it, excess hot air is removed from inside the building. (In addition to maintaining good cooling efficiency and ventilation of the air conditioner, it also reduces the power load of the air conditioner itself, noise generated from the exhaust fan and air terminals, facility costs, and energy costs. Our goal is to provide a heat exhaust damper that can.

■0 Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention is arranged at least on the roof surface of a building and in its vicinity, and one end is communicated with the indoor side. A hollow cylindrical body 16 having an opening that communicates with the outside air at the other end; A lid body 20 is fixed to the shaft 18 and operates to open and close the opening 14 on the outside air side of the hollow cylindrical body 16 while coming into close contact with or separating from the opening 14 on the outside air side of the hollow cylindrical body 16 as the operating shaft 18 moves; A cylindrical attracting plate 32 is provided near the outside of the opening 14 and arranged and constructed in a circumferential manner with a gap in the radial direction from the outer peripheral edge of the hollow cylindrical body 16. In a state where it is separated from the side opening 14,
It is composed of a heat exhaust damper 10 that naturally exhausts hot air stagnant indoors while attracting it.

Further, the lid 20 may have a central portion fixed to the outside air side end of the operating shaft 18, and a curved surface 3o curved downward along the peripheral edge thereof.

(2) Function The thermal exhaust damper of the present invention opens the indoor side opening of the hollow cylindrical body to
It is mainly installed so that it communicates with a hole drilled in a roof surface or ceiling of a dome or the like.

By separating the lid from the open air side opening of the hollow cylindrical body, the outside air flowing through the induction plate placed near the outside air side of the hollow cylindrical body is drawn into the induction plate, and the lid body and hollow It blows through while generating a vortex in the gap between the cylindrical body and the outside air side opening. The negative pressure caused by the vortex acts from the hollow cylindrical body to the interior space of a room, dome, etc., and the stagnant internal air such as hot air is naturally exhausted to the outside, and the hollow cylindrical body is evacuated from all directions. Indoor air can be exhausted by the wind, and raindrops do not enter (also, because excess hot air does not accumulate in the dome-like ceiling of a building, the cooling efficiency of the air conditioner is maintained at a good level in the summer). At the same time, the power load on the air conditioner itself is reduced, and operation management is easy and requires no effort.

(3) Embodiments Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 and FIG. 2 show a thermal exhaust damper 10 according to an embodiment of the present invention. In this case, it is placed on the transparent plate material or in the vicinity thereof.

In the figure, the heat exhaust damper 10 is made of, for example, corrosion-resistant aluminum, and is a cylinder having an indoor side port 12 communicating with the indoor side of the building at one end and an outside air side port 14 communicating with the outside air at the other end. The hollow cylindrical body 16 of the mold and the hollow cylindrical body 1
An operating shaft 18 is provided within the hollow cylinder body 6 so as to be movable in the direction of the cylinder core of the hollow cylinder body 16, and an actuation shaft 18 that is fixed to the upper end of the actuation shaft 18 and opens the outside air side opening of the hollow cylinder body 16 as the actuation shaft 18 moves. 14, and a lid body 20 for opening and closing the opening while coming into close contact with or separating from the opening.

The hollow cylindrical body 16 has a gasket 2 for maintaining airtightness when the lid body 20 is in close contact with the edge of the open air side opening 14.
2, and a flange 24 is provided protruding from the edge of the indoor opening 12 to be secured to a desired position such as the roof surface with bolts.

Further, a star-shaped frame 26.26 is installed on the inner surface of the hollow cylinder 16 near the outside air side opening 14 and near the indoor side opening 12, and a bearing fixed to the center of this star-shaped frame 26.26 is provided. 28
．． The actuating shaft 18 is supported by the shaft 28 so as to be vertically movable.

A hole is formed in the center of the lid 20, and the upper end of the operating shaft 18, that is, the end on the outside air side, is inserted into the hole and is locked with a stopper 31. This lid body 20 is circular in plan view, has an outer diameter that can close the outside air side opening 14, and is completely attached to the gasket 22 of the outside air side opening 14 of the hollow cylindrical body 16 along its peripheral edge. It is formed into a substantially mushroom-shaped cross section with a curved surface 30 curved downward so as to fit tightly together. This promotes the flow of outside air and the action of drawing in hot air from the indoor side as a vortex and flowing out from the opening.

The characteristics of the present invention are as shown in FIGS. 1, 2, and 5.
As shown in the figure, an attraction plate 32 is arranged and constructed near the outside of the outside air port 14 of the hollow cylindrical body 16 to draw indoor hot air, which is communicated with the indoor port 12, to the outside. be.

The attraction plate 32 is made up of a cylinder 32a that is wound around the outer peripheral edge of the hollow cylinder 16 with a gap in the radial direction, and three sets of shafts 34 that protrude from radially symmetrical positions of the hollow cylinder 16.
It is supported on.

The attraction plate 32 allows the lid body 20 to be separated from the outside air side opening 14 to open the hollow cylindrical body 16.
The outside air flowing through the upper surface of 2 from each direction enters into the gap between the lid 20 and the outside air side opening 14 of the hollow cylinder 16, and passes through to the outside again as a vortex, and the negative pressure of the vortex at this time As a result of this action, hot air accumulated indoors is induced to be exhausted via the indoor side port 12 of the hollow cylinder 16.

This makes it possible to perform omnidirectional heat exhaustion, which allows exhausting against wind from any direction. In addition to having a diameter, the attraction plate 32 can also prevent raindrops from entering.

Although the hollow cylindrical body 16, the lid body 20, the attraction plate 32, etc. are formed in a circular shape in plan view in the embodiment, they are not limited to this and may be polygonal shapes such as a quadrangle or a hexagon.

3 and 4 show an opening/closing drive mechanism 36 for opening and closing the lid body 20 from the outside air side opening 14 of the hollow cylinder body 16 by moving the operating shaft 16 inside the hollow cylinder body 16 up and down. ing. The opening/closing drive mechanism 36 includes a box-shaped crank box 40 which is installed on a star-shaped frame 26.26 facing the operating shaft 18 and has a crank mechanism 38 therein for guiding the operating shaft 18 up and down, and this crank box. a synchronous motor 42 installed on the outer surface of 40 for driving the crank mechanism 38;
and a control panel 44 for the synchronous motor 42.

The crank mechanism 38 includes a disk crank 46 fixed to the rotating shaft of a synchronous motor 42, and a horizontal hole 50 that engages with a crank pin 48 protruding from the outer surface of the disk crank 46.
and an elevating plate 52 fitted in the crank box 40 so as to be vertically slidable. Further, the crank box 40 has a vertical hole 54 opened at a position facing the operating shaft 18, and a spacer 56 fixed to the operating shaft 18.
A pair of upper and lower connecting rods 58.58 are connected to the elevating plate 52 through the vertical hole 54. Therefore, the operating shaft 18 moves up and down together with the elevating plate 52, which repeatedly rises and descends every half rotation of the disc crank 46.
The lid body 20 fixed to the upper end of the hollow cylinder body 16 opens and closes with respect to the outside air side opening 14 of the hollow cylinder body 16. Furthermore, in order to detect the lower limit position and upper limit position of the crank bin 48, stop the synchronous motor 42, and maintain the open and closed states of the lid body 20, a recess 60 is provided at the periphery of the disc crank 46.
A lower limit switch 62a for stopping the synchronous motor 42 and an upper limit switch 62b are provided in the crank box 40 in correspondence with the recess 60.

As shown in FIGS. 5 and 6, this heat exhaust damper 1O is installed on the roof surface R of a general residence or the upper surface of a daylighting dome D connected to each other in a high-rise building B, and In order to communicate the indoor port 12 with the indoor space or the interior space, and to open and close the lid 20, an open/close switch 66 connected to the end of a cable 64 extending from the control panel 44 is installed at a predetermined position indoors or the like. It is something. The heat exhaust damper 10 is optimally installed on the roof surface R or the top of the daylighting dome D, but its function can be fully achieved even if it is installed on an inclined surface.

When the opening/closing switch 66 is turned on when the lid body 20 is closed in close contact with the outside air opening 14 of the hollow cylinder 16 as shown in FIG. 1, the synchronous motor 42 in the opening/closing drive mechanism 36 rotates, and while the elevating plate 52 is raised by the disk crank 46, the operating shaft 18 also rises, and the lid body 20 is separated from the upper end of the hollow cylinder body 16 and opened.
When the recess 60 of No. 6 reaches the upper limit switch 62b position, the synchronous motor 42 stops and the lid 20 maintains its open state.

As shown in FIG. 5, when outside air is blown onto the heat exhaust damper 10 with the lid 20 open, when it passes through the induction plate 32, the outside air side opening 14 of the hollow cylinder 16
Outside air flows into the gap between the lid body 20 and the lid body 20 and flows out through the attraction plate 32 again while generating a vortex, and the negative pressure effect caused by this vortex acts on the inside of the hollow cylinder 16, causing the hollow cylinder 16 to communicate with each other. The air stagnant in the internal space is naturally exhausted, and the air inside can be naturally exhausted by using wind blowing from all directions against the thermal exhaust damper 10. Since it is located above the hollow cylindrical body 16, raindrops will not enter even when it is opened.

In addition, the heat exhaust duct 10 prevents excess hot air from accumulating inside the dome-like ceiling, which improves the cooling efficiency inside the building during the summer and greatly reduces the power load.Furthermore, operation management is easy. It does not require any effort.

Lid body 20 that is open during wind and rain, winter, night, etc.
When closing the opening/closing switch 66, the disk crank 46 of the synchronous motor 42 rotates half a turn again, and the operating shaft 18 descends while closing the lower limit switch 62a.
The synchronous motor 42 is stopped, and the lid body 20 is moved to the hollow cylinder body 1.
It completely contacts the outside air side opening 14 of No. 6 and maintains its closed state.

Further, the thermal exhaust damper 10 can automatically open and close the lid 20 by sensing room temperature, day/night, rain or shine, etc. using a combination of a temperature sensor installed indoors and a sensor installed outdoors.

(8) As described in detail in the invention, according to the heat exhaust damper of the present invention, the lid body is disposed at least on the roof surface of a building and its vicinity, and opens and closes the outside air side opening of the hollow cylindrical body. By placing and constructing a cylindrical attraction plate near the outside air side opening of this hollow cylindrical body, 1. Negative pressure is generated inside the hollow cylindrical body using external ventilation and communicated with the indoor side opening. This system naturally exhausts the hot air, etc. from the internal space, and prevents excess hot air from accumulating on the inner surface of the ceiling, which maintains good cooling efficiency of the air conditioner during the summer and reduces the power load on the air conditioner itself. It is possible to do so. Moreover, operation management is easy and does not require much effort.

In particular, by providing a cylindrical attracting plate near the outside air side opening of the hollow cylinder, it is possible to exhaust the hot air accumulated inside with wind from all directions regardless of the wind direction, and prevent raindrops from entering. do not have.

Furthermore, since the lid body has a downwardly curved curved surface on the peripheral edge, it is possible to promote the inflow of outside air and the attraction of hot air from the indoor side, and to make the induced outflow of the indoor hot air smooth. Become.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the main parts of a heat exhaust damper according to an embodiment of the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is a partially cutaway view showing the drive mechanism of its operating shaft. FIG. 4 is a front view, FIG. 4 is a view taken along the line A-A in FIG. 3, and FIGS. 5 and 6 are diagrams showing how the heat exhaust damper is used. 10. Heat exhaust damper 12. ,,Indoor opening 1.
14. , outside air side opening, 16. ,,Hollow cylindrical body, 18,,Operating shaft, 20. ,, lid body, 30. , , curved surface, 32. ,
, attraction board

Claims (1)

[Scope of Claims] 1. A hollow cylindrical body disposed at least on the roof surface of a building and in the vicinity thereof, having an opening communicating with the indoor side at one end and communicating with the outside air at the other end; An actuation shaft is provided within the hollow cylinder and is movable in the direction of the cylinder core of the hollow cylinder, and an actuation shaft that is fixed to the actuation shaft and comes into close contact with or separates from the outside air side opening of the hollow cylinder as the actuation shaft moves. a lid body for opening and closing the opening, and a cylindrical body arranged and constructed in a circumferential manner with a gap in the radial direction from the outer periphery of the hollow cylindrical body near the outside of the open air side opening of the hollow cylindrical body. A heat exhaust damper which naturally exhausts hot air stagnant indoors while attracting it with a lid separated from an opening on the outside air side of a hollow cylindrical body. 2. The heat exhaust damper according to claim 1, wherein the lid has a central portion fixed to the outside air side end of the operating shaft, and has a curved surface that curves downward along its peripheral edge.