JP6563245B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a ventilation device provided in a building such as an office building for ventilating the inside of the building.

  For example, as shown in Patent Document 1, a flap (damper) is arranged in a duct (box) connecting the outside of the building and the inside of the building (see FIG. 1 of Patent Document 1), and the outside air flowing in the duct There is known a ventilator that suppresses the inflow of outside air into a building by swinging the flap in the direction of closing the duct when the wind speed exceeds a predetermined value.

  In the ventilator disclosed in Patent Document 1, since the flap is in a posture along the outside air flowing in the duct, the posture may be maintained even when the wind speed of the outside air increases.

  Therefore, in the ventilation device of Patent Document 1, wind receiving portions bent in opposite directions are provided at the upper and lower ends of the flap, and the flap closes the duct by receiving outside air at the wind receiving portion (patent) In FIG. 1 of the document 1, it swings in a counterclockwise direction.

Japanese Utility Model Publication No. 64-45227

  However, the ventilator of Patent Document 1 has a problem in that the wind receiving portion of the flap becomes resistance of outside air flowing through the duct, resulting in a decrease in ventilation efficiency. In addition, the flap is supported by the swing shaft (horizontal horizontal axis) at the center in the length direction (vertical direction in FIG. An attempt is made to rotate the flaps in opposite directions to the outside air received at the lower portion of the swing shaft (see FIG. 1 of Patent Document 1). For this reason, the swinging motion of the flap becomes dull and the responsiveness to the outside air flowing into the duct is deteriorated.

  The present invention has been provided for the purpose of solving such inconveniences, and it is an object of the present invention to provide a ventilator having good ventilation efficiency and good response to outside air flowing into a duct.

In order to solve such inconvenience, the ventilator 1 of the present invention is connected to the opening provided on the outer wall of the building and has an outside air communication duct 3 extending toward the inside of the building, And an outside air adjusting means 5 for automatically adjusting outside air flowing into the outside air communication duct 3. The outside air communication duct 3 is curved in the middle thereof, and then the other surface 3b is opened inside the building. The outside air adjusting means 5 has a plate-like flap 11 and a support shaft 12 that supports the base end portion of the flap 11 so as to be swingable. The flap 11 is a curve of the outside air communication duct 3. Placed in an outer duct portion 3c that extends horizontally and linearly on the outer side of the building with respect to the portion 3d, and the support shaft 12 is closer to the curved portion 3d side of the outside air communication duct 3 than the flap 11 Placed on the flap 11 , Outside air is balanced horizontally along the axial direction of the outer duct portion 3c in still air that does not flow into the outside-air connection duct 3, the support shaft 12, the inner peripheral side of the curved portion 3d at an outer duct section 3c It arrange | positions in the location near the wall surface 3f used as the outer peripheral side of the curved part 3d rather than the wall surface 3g which becomes.

  The location where the support shaft 12 is disposed here includes a location in the outer duct portion 3c of the outside air communication duct 3 and a location that slightly enters the curved portion 3d. Here, the posture along the axial direction of the outer duct portion 3c of the flap 11 may be any posture as long as the flap 11 does not easily block the flow of outside air, and is slightly inclined with respect to the axial direction of the outer duct portion 3c. Is also included. The outer duct portion 3c includes a case where the outer duct portion 3c is slightly curved, and the inner side of the building may be narrower than the outer side of the building, for example. One surface 3a of the outside air communication duct 3 includes a case where it is directly connected to the opening of the outer wall of the building and a case where it is indirectly connected via another duct or the like.

  The support shaft 12 is preferably closer to the wall surface 3f on the outer peripheral side of the curved portion 3d in the outer duct portion 3c, but the flap 11 must be lengthened to properly close the outside air communication duct 3 as it approaches, Therefore, the arrangement location of the support shaft 12 is set. The flap 11 includes a case where it is balanced by a weight such as a weight and a case where it is balanced by a biasing force of a spring.

  Moreover, it has the opening-and-closing means 4 * 18 which opens and closes the other surface 3b of the external air communication duct 3, and has arrange | positioned the water stop member 15 * 30 along the edge of the other surface 3b of the external air communication duct 3. The opening / closing means 4 and 18 have movable panels 6 and 20, and the movable panels 6 and 20 are watertight to the water stop members 15 and 30 when the other surface 3b of the outside air communication duct 3 is closed. Pressed. As the opening / closing means 4 and 18 here, the one shown in FIG. 1, the one shown in FIG. 2 and FIG. 3, and the like are applicable, but may have a configuration other than that shown in FIG. 2 and FIG. . The watertight state includes a case having an airtight function.

  Moreover, it has the stopper 14 which receives the flap 11 rock | fluctuated in the direction which closes the external air communication duct 3 with external air, and the flap 11 has the front-end | tip part 11a of the flap 11 in the state received by the stopper 14, the external air communication duct 3 It may not be in contact with the inner surface.

  In the ventilator of the present invention, the wall surface 3g between the flap 11 and the wall surface 3f which is the outer peripheral side of the curved portion 3d at the outer duct portion 3c is the inner peripheral side of the curved portion 3d at the flap 11 and the outer duct portion 3c. In addition, the outside air flowing from the opening of the outer wall of the building hits the outer peripheral side of the curved portion 3d of the outside air communication duct 3 on the downstream side of the flap 11, and the flow is suppressed. Thereby, the airflow resistance between the flap 11 and the wall surface 3f of the outer duct portion 3c is increased, and the flow (flow velocity) of the outside air between the flap 11 and the wall surface 3f of the outer duct portion 3c of the outside air communication duct 3 is increased. However, it becomes slower than the flow of the outside air between the flap 11 and the wall surface 3g of the outer duct part 3c.

  As a result, lift to the wall surface 3g side of the outer duct portion 3c acts on the flap 11, and the flap 11 swings toward the wall surface 3g side. Then, since the flap 11 swings toward the wall surface 3g, the outside air hits the back surface of the flap 11, and the flap 11 has an angle corresponding to the balance between the outside air flowing into the outside air communication duct 3 and the weight of the flap 11 by the outside air. Tilt.

  In this way, since the flap 11 swings according to the outside air flowing through the outside air communication duct 3 and the outside air flowing into the building can be adjusted, a strong wind blows into the building and documents in the building are blown off, etc. Can be suppressed. In addition, when the outside air flowing into the outside air communication duct 3 is small, the flap 11 has a posture substantially along the axial direction of the outer duct portion 3c. For example, in the case of a weak wind, the outside air is almost disturbed by the flap 11. It is possible to smoothly flow through the outside air communication duct 3 without introducing an appropriate amount of outside air into the building.

  For example, in the case of a strong wind, if the other surface 3b of the outside air communication duct 3 on the inner side of the building can be closed by the opening / closing means 4 and 18, it is ensured that the strong wind flows into the building through the outside air communication duct 3. Can be suppressed. Moreover, the movable panels 6 and 20 of the opening and closing means 4 and 18 are pressed against the water stop members 15 and 30 in a watertight manner when the other surface 3b of the outside air communication duct 3 is closed. Rainwater can be reliably prevented from flowing into the building.

  When the flap 11 is swung in the direction of closing the outside air communication duct 3 by the outside air and received by the stopper 14, the tip end 11 a of the flap 11 is not in contact with the inner surface of the outside air communication duct 3. It can prevent that the part 11a collides with the inner surface of the external air communication duct 3, and the said external air communication duct 3 and the flap 11 are damaged.

It is a longitudinal cross-sectional view which shows 1st Example of the ventilator which concerns on this invention. It is a longitudinal cross-sectional view which shows 2nd Example of the ventilation apparatus of this invention. It is a cross-sectional view of the ventilation device of the second embodiment.

  A first embodiment of a ventilator 1 according to the present invention will be described with reference to the drawings. The ventilator 1 is used for taking outside air into the building from an opening formed in the outer wall of a building such as an office building.

  As shown in FIG. 1, the ventilator 1 has one surface (one end surface) 3a connected to an opening (not shown) provided on the outer wall of the building and extends toward the inside of the building. The outside air communication duct 3, the opening / closing means 4 for opening and closing the outside air communication duct 3, and the outside air adjusting means 5 for automatically adjusting the outside air flowing into the outside air communication duct 3.

  The outside air communication duct 3 is curved in the middle thereof, and then the other surface (the other end surface) 3b located inside the building is opened. That is, the outside air communication duct 3 includes an outer duct portion 3c extending substantially horizontally and linearly from the one end surface 3a toward the inside of the building, and a curved portion connected to the outer duct portion 3c and curved upward. 3d and an inner duct portion 3e that is connected to the upper side of the curved portion 3d and extends substantially linearly upward. The other end surface 3b opens at the upper end of the inner duct portion 3e, and the opening / closing means 4 opens and closes the other end surface 3b.

  The opening / closing means 4 is a movable panel 6 for opening and closing the other end surface 3b of the outside air communication duct 3, and a driving means for moving the movable panel 6 in the direction of the inside and outside of the building (left and right in FIG. 1). A rack 7 and a pinion 8 and a guide rail 9 extending inward and outward of the building and guiding the movable panel 6 are provided.

  The outside air adjusting means 5 includes a substantially flat flap 11 disposed in the outer duct portion 3c located on the outer side of the building with respect to the curved portion 3d of the outside air communication duct 3, and a base of the flap 11 A support shaft 12 that swingably supports an end (the right end in the solid line diagram of FIG. 1) and a weight 13 disposed on the opposite side of the flap 11 with the support shaft 12 interposed therebetween. The flap 11 and the weight 13 are formed so as to extend integrally and substantially linearly.

  The flap 11 is maintained in a substantially horizontal posture along the axial direction of the outer duct portion 3c of the outside air communication duct 3 in a windless state where outside air does not flow into the outside air communication duct 3 by balancing with the weight of the weight 13. (Position of the solid line in FIG. 1).

  The support shaft 12 is disposed at a location closer to the curved portion 3d side of the outside air communication duct 3 than the flap 11 and near the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3. Thereby, the distance between the flap 11 and the lower wall surface 3f of the outer duct portion 3c is narrowed to, for example, 1/2 or less of the distance between the flap 11 and the upper wall surface 3g of the outer duct portion 3c of the outside air communication duct 3. Yes.

  Thus, the space between the flap 11 and the weight 13 and the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3 is narrow, and the outside air communication duct 3 is curved upward on the downstream side of the outside airflow from the flap 11 and the weight 13. Therefore, the airflow resistance between the flap 11 and the weight 13 and the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3 is increased. As a result, the outside air that has flowed into the outside air communication duct 3 causes a wind pool between the flap 11 and the lower wall surface 3f of the outside duct portion 3c of the outside air communication duct 3, and the flap 11 and the weight 13 and the outside of the outside air communication duct 3 are outside. The flow of outside air (flow velocity) between the duct 3c and the lower wall surface 3f is slower than the flow of outside air above the flap 11 and the weight 13.

  A stopper 14 capable of receiving the weight 13 is provided below the support shaft 12 and on the upper surface of the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3. The stopper 14 is composed of a main body 14a erected substantially vertically on the upper surface of the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3, and a cushion member made of urethane rubber or the like provided at the upper end of the main body 14a. 14b. The weight 13 is received by the cushion member 14b. That is, the flap 11 is received by the stopper 14 via the weight 13. The flap 11 reinforces the tip end side of the flap 11 by the tip portion 11a on the other end side (left end side in FIG. 1) being curved downward.

  The rack 7 of the opening / closing means 4 is arranged on the upper surface side of the movable panel 6 and extends inward and outward of the building. The rack 7 meshes with the pinion 8. The pinion 8 is rotationally driven in the forward or reverse direction by a motor or the like of a control device (not shown), and the movable panel 6 slides in and out of the building according to the rotation of the pinion 8. To do.

  The lower surface 6a of the movable panel 6 has a downward slope that becomes lower as it goes outward from the building, and the other end surface 3b of the outside air communication duct 3 has the same downward slope as the lower surface 6a of the movable panel 6. ing. On the other end surface 3b of the outside air communication duct 3, a water stop member 15 made of urethane rubber or the like is annularly arranged along the edge. The movable panel 6 is pressed against the water stop member 15 when moved to the closed position (position in the two-dot chain diagram of FIG. 1), and is in close contact with the water stop member 15 in a watertight manner.

  A plurality of rollers 16 that engage with the guide rail 9 are arranged on the side surface of the movable panel 6, and when the movable panel 6 slides, these rollers 16 roll along the guide rail 9. Then, the movable panel 6 moves.

  Next, the operation of the ventilator 1 will be described. For convenience of explanation, description will be made from a state in which the movable panel 6 is in the position of the solid line in FIG. 1 (a state in which the other end surface 3b of the outside air communication duct 3 is open). In that state, outside air can flow into the building.

  For example, when the wind speed is 1 m or less and the outside air flowing into the outside air communication duct 3 is weak wind, the flap 11 is balanced with the weight 13 in the horizontal posture described above. When the outside air flowing into the outside air communication duct 3 increases from the case of the weak wind, as described above, a wind pool is generated between the flap 11 and the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3, and the flap 11 and The flow of outside air between the weight 13 and the lower wall surface 3f of the outer duct portion 3c of the outside air communication duct 3 is slowed, and an upward lift is applied to the flap 11 so that the flap 11 swings upward.

  Then, since the flap 11 swings upward, the outside air strikes the back surface of the flap 11, and the flap 11 is urged in the clockwise direction of FIG. 1 by the outside air, so that the flap 11 flows into the outside air communication duct 3. And an angle corresponding to the balance between the flap 11 and the weight of the weight 13.

  For example, when the wind speed becomes 5 m or more and the outside air flowing into the outside air communication duct 3 becomes a predetermined amount or more, the flap 11 assumes a substantially vertical posture shown in the two-dot chain diagram of FIG. At that time, the weight 13 is received by the cushion member 16a of the stopper 16, and is further restricted from swinging (in the clockwise direction in FIG. 1). In this state, when the outside air flowing into the outside air communication duct 3 decreases, the flap 11 swings in the counterclockwise direction of FIG.

  For example, when the wind speed is 10 m or more, the control device that detects the strong wind rotates the pinion 8 of the opening / closing means 4. As a result, the movable panel 6 slides toward the inside of the building, and closes the other end surface 3b of the outside air communication duct 3 on the inside side of the building (the state of the two-dot chain line diagram in FIG. 1), and the strong wind flows into the outside air communication duct. 3 is prevented from flowing into the building.

  In the state where the weight 13 is received by the cushion member 16 a of the stopper 16, a slight gap is generated between the front end portion of the flap 11 and the upper wall surface 3 g of the outer duct portion 3 c of the outside air communication duct 3. (See the two-dot chain line diagram in FIG. 1), which prevents the front end portion 11 a of the flap 11 from colliding with the upper wall surface 3 g of the outer duct portion 3 c of the outside air communication duct 3.

  In this way, the flap 11 swings according to the outside air flowing in the outside air communication duct 3 and the outside air flowing into the building can be adjusted, so that strong wind blows into the building and the documents in the building are blown away. Etc. can be suppressed.

  Moreover, in the case of a weak wind with little outside air flowing into the outside air communication duct 3, the flap 11 of the outside air adjusting means 5 is in a substantially horizontal posture along the axial direction of the outer duct portion 3 c of the outside air communication duct 3. In the case of wind, the outside air can flow smoothly through the outside air communication duct 3 without being disturbed by the flap 11, and an appropriate amount of outside air can be introduced into the building.

  Next, a second embodiment of the ventilator 1 according to the present invention will be described with reference to FIGS. In the second embodiment, the opening / closing means 18 drives the movable panel 20 using a crank mechanism 19.

  As shown in FIG. 3, the crank mechanism 19 has a first bar 22 attached to an output shaft 21a of a drive unit 21 made of a motor or the like and pivoted by the drive unit 21; One end 24 a is engaged with the notch 22 a at the tip of the first bar 22, and the tip of the short piece 26 a of the substantially L-shaped first angle 26 is connected to the other end via the third bar 25. And a second bar 24 connected so as to be swingable.

  The crank mechanism 19 includes a second angle 27 that is paired with the first angle 26 and has the same shape as the first angle 26, a short piece 26 a of the first angle 26, and a short piece 27 a of the second angle 27. The connecting bar 28 is slidably bridged over one end, and one end of the connecting bar 28 is slidably connected to the tip of the long piece 26b of the first angle 26 and the long piece 27b of the second angle 27, respectively. In addition, third bars 29 and 29 are connected to the movable panel 20 so that the other end portions are swingable.

  The first angle 26 and the second angle 27 are arranged in the same posture on the left and right sides of the movable panel 20, respectively, and the bent portions of the angles 26 and 27 are respectively housings in which the movable panel 20 is arranged ( (Not shown) is swingably supported on an upper wall.

  As shown in FIG. 2, the lower surface 20a of the movable panel 20 is substantially horizontal, and the other end surface 3b of the outside air communication duct 3 on the inner side of the building is substantially horizontal accordingly. On the edge of the other end surface 3b of the outside air communication duct 3, a water stop member 30 made of urethane rubber or the like is arranged in an annular shape.

  The guide rail 33 extends inward and outward of the building, and a plurality of rollers 32 arranged on the side surface of the movable panel 20 are engaged with the guide rail 33 so as to be able to roll inward and outward of the building. Yes. The guide rail 33 is inclined obliquely downward at a position immediately before the movable panel 20 reaches the closed position (position in the two-dot chain diagram in FIG. 2) from the open position (position in the solid line in FIG. 2). Accordingly, the movable panel 20 moves downward just before reaching the closed position and is pressed against the water stop member 30, thereby closely contacting the water stop member 30 in the watertight state at the closed position.

  Even in the opening / closing means 18 of the second embodiment, for example, when the wind speed is 10 m or more, the movable panel 20 moves to the inner side of the building and the other end surface of the outside air communication duct 3 on the inner side of the building. 3b is closed (the state of the two-dot chain diagram in FIGS. 2 and 3). Thereby, the strong wind is prevented from flowing into the building through the outside air communication duct 3. Since the other configurations and operations of the second embodiment are the same as those of the first embodiment, the same reference numerals as those in the first embodiment are used and description thereof is omitted.

DESCRIPTION OF SYMBOLS 1 Ventilation device 3 Outside air communication duct 3a One side of outside air communication duct 3b The other side of outside air communication duct 3c Outside duct part of outside air communication duct 3d Curved part of outside air communication duct 3e Inside duct part of outside air communication duct 3f Outside duct part Lower wall surface 3g Upper wall surface of outer duct portion 4.18 Opening / closing means 5 Outside air adjusting means 6.20 Movable panel 11. Flap 12. Support shaft 13. Weight 14. Stopper 15.30. Water blocking member.

Claims (3)

One surface (3a) is connected to the opening provided in the outer wall of the building and extends to the inside of the building, and flows into the outside air communication duct (3). Outside air adjusting means (5) for automatically adjusting outside air,
The outside air communication duct (3) is curved in the middle thereof, and then the other surface (3b) is opened inside the building,
The outside air adjusting means (5) includes a plate-shaped flap (11) and a support shaft (12) that supports the base end of the flap (11) so as to be swingable.
The flap (11) is disposed in an outer duct portion (3c) extending horizontally and linearly located on the outer side of the building from the curved portion (3d) of the outside air communication duct (3), The support shaft (12) is disposed at a location on the curved portion (3d) side of the outside air communication duct (3) from the flap (11),
The flap (11) is balanced in a horizontal posture along the axial direction of the outer duct portion (3c) in a windless state where the outside air does not flow into the outside air communication duct (3),
The support shaft (12) is arranged on the wall surface (3f) on the outer peripheral side of the curved portion (3d) rather than the wall surface (3g) on the inner peripheral side of the curved portion (3d) in the outer duct portion (3c). A ventilator characterized by being placed in a nearby location. Open / close means (4, 18) for opening and closing the other surface (3b) of the outside air communication duct (3),
A water stop member (15, 30) is disposed along the edge of the other surface (3b) of the outside air communication duct (3),
The opening / closing means (4, 18) has a movable panel (6, 20), and the movable panel (6, 20) closes the other surface (3b) of the outside air communication duct (3). The ventilation device according to claim 1, wherein the ventilation device is pressed against the water stop member (15, 30) in a watertight manner. A stopper (14) for receiving the flap (11) swung in the direction of closing the outside air communication duct (3) by the outside air;
When the flap (11) is received by the stopper (14), the tip (11a) of the flap (11) is not in contact with the inner surface of the outside air communication duct (3). Item 1. A ventilator according to item 1 or 2.

Images