JP2006189234A - Natural ventilation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a natural ventilation device having a forcible closing means with small energy. <P>SOLUTION: This natural ventilation device is constituted by fixing a vane 4 being long laterally and swinging by a supporting shaft 5 inserted into an outer side of a duct 1 communicating the inside with the outside of a building and being long laterally through a bearing 11 so as to swing freely in the duct 1. A turning shaft 6 is provided in parallel with the supporting shaft 5 near a tip of the vane 4, and an arm 8 having a tip roller 7 is provided on the turning shaft 6 to block an indoor side opening part 3 by the vane 4 by a forcedly closing device operated electrically or by manual operation and lock the vane 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The device of the present invention is a ventilation device that adjusts the inflow of outside air into a room by attaching blades in a horizontally long ventilation duct provided between the inside and outside of a building and naturally swinging the blades by the strength of the wind It is related with the ventilator which has a means to forcibly move a blade | wing and block | close an exit.

  Recently, energy conservation and environmental problems have been screamed and ecology has become popular, and various methods for incorporating natural ventilation have been devised. For example, a natural ventilation device (see Patent Document 1) that ventilates the interior using the eyes and a wind tunnel that is provided with a ventilation opening on the outer wall of the building and that communicates with the inside and outside of the building, and that has an air volume adjustment valve in the wind tunnel (Patent Document) 2), and the present inventor also provided an air supply device (see Patent Document 3).

  JP 59-2807 A   Japanese Patent Laid-Open No. 10-232039 FIGS. 1 and 4 and the third page paragraphs 0015 to 0017   Japanese Patent Application No. 2004-259015 FIG.

  However, although the thing of patent document 1 can adjust manually the amount of the outflow of the wind to a room | chamber interior with a rotating lid, the inconvenience that an internal outflow amount cannot be adjusted automatically according to the amount of inflow of a wind. 1 and 4 of Patent Document 2 are constant air volume natural ventilation devices provided on the lower frame and the upper frame, respectively, and each is provided with an air volume adjusting valve and a back flow control valve, but the back flow control is performed indoors. It is necessary if it is mechanically released from the air, but it is unnecessary in the case of natural ventilation, which has the disadvantage of installing an extra device, and that it cannot be forcibly fully closed. In the case of Patent Document 3 provided by the inventor, in order to forcibly move the blades at the time of forced closing, it is necessary to rotate the support shaft on which the blades are pivotally attached, which requires a large force. It has occurred. The present invention has been provided for the purpose of solving such disadvantages.

  The inventor of the present invention has the disadvantage that it is caused by providing another rotating shaft without forcibly rotating the support shaft itself as a forced closing means of the natural ventilation device, attaching an arm to it, and forcibly closing the blade using this arm. Settled. That is, according to the present invention, for example, a horizontally long blade is provided in a horizontally long duct having a structure in which the inside and outside of the building communicate with each other. The upper part of the blade is fixed to the support shaft that is inserted through the seal shaft, and a seal member is provided on either the peripheral edge of the indoor opening of the duct or the peripheral edge of the blade that contacts the peripheral edge of the indoor opening. In a natural ventilator configured such that when the maximum swing position is reached, the indoor opening is closed by a portion of the blade below the support shaft, and parallel to the support shaft from the blade to the building opening side. A rotating shaft is penetrated, and an arm having a tip roller is fixed to the rotating shaft, and the rotating shaft is forcibly rotated by an electric or manual forcible rotating means, whereby the blade is forcibly opened. Close part One of the natural ventilation devices is characterized in that when the rotation shaft is rotated by the forced rotation means and the indoor opening is forcibly closed by the blade, the blade is A natural ventilation device characterized in that a blade lock means is provided on the blade or the forced rotation means so as not to move, and one is a wind sensor provided outside the building, and the electric forced force The natural ventilation device is characterized in that the rotating means automatically forcibly rotates when the wind exceeding the setting is detected in conjunction with the wind sensor, and the blade closes the indoor opening.

  The blade lock means described above is, for example, a rotation shaft when a blade is pressed down when the blade is fully closed by connecting a power box using a worm and a worm gear between the rotation shaft and the motor shaft as drive means for the rotation shaft. However, it is possible to prevent forward rotation and reverse rotation easily, or to provide a locking groove on the blade portion of the tip roller contact portion when fully closed, or conversely, a small chevron is provided to The lock means may be configured such that it cannot be easily advanced or returned beyond the mountain-shaped portion, and other methods may be used.

  If the outside is larger due to the pressure difference inside and outside the building, the wind will blow into the building. The swaying state of the blade is determined by the ventilation state of the wind. If the wind is strong, the blade rotates toward the indoor opening, and if the wind weakens, it naturally returns. The return state depends on the strength of the wind. In addition, if it blows momentarily and stops for a moment, it may return greatly due to shake inertia, and at that time, it may collide with the rotating shaft or roller impactingly. It is desirable to provide an impact absorber on the rotating shaft itself so as not to collide with the moving shaft. By providing the impact absorber, the impact of the blade is absorbed and the swing of the blade is small.

  The natural ventilation device of the present invention is energy saving because it automatically controls the opening and closing of the indoor side opening by swinging the blades only by natural force (wind force), and can perform a substantially constant amount of ventilation by automatic control. In addition, since the blades are supported on the upper side and the indoor side opening is closed only by the lower part of the blades than the support shaft, the closed surface is on a single plane and the work of sealing the periphery of the indoor side opening using a sealing member is easy. I can do it. In addition, since the tip of the blade is pushed by the arm, it can be closed with a small force and the drive motor can be small, and the blade lock means changes the pressure difference inside and outside the building. Further, the blades are locked and the indoor side opening is closed, and air cannot enter and exit, so that the influence of the outside air is not exerted on the room.

  The natural ventilator of the present invention is provided with a horizontally long blade 4 in a horizontally long duct 1 so that the blade 4 can be pivotally fixed from the outside of the duct 1 via a bearing 11, and FIG. Sectional drawing of the natural ventilation apparatus of an Example, FIG. 2 is a perspective view of a horizontally long duct internal structure and a forced closure apparatus. In the broken part of FIG. 2, what is indicated by a two-dot chain line indicates that a visible part is connected when there is no broken part.

  First, the structure will be described. In FIGS. 1 and 2, when the outside is higher due to the pressure difference between the inside and outside of the building, the outside air flows from the building-side opening 2 of the duct 1 as indicated by the white arrow in FIG. Then, it flows out from the indoor side opening 3 to the indoor side. A horizontally long blade 4 is provided in the duct 1, and the upper side of the blade 4 is fixed so that it can swing with respect to the wind by a support shaft 5 inserted from both outer sides of the duct 1 through a bearing 11. Has been. Further, a rotating shaft 6 inserted through bearings 12 from both outer sides of the duct 1 is provided at a position closer to the blade 4 on the building side opening 2 side and closer to the tip of the blade 4. This is a natural ventilation device in which an arm 8 in which a tip roller 7 is provided on a rotating shaft 6 is provided in front of a blade 4 and an impact absorber 10 is provided on the rotating shaft 6.

  When the blade 4 reaches the set maximum swing position, the natural ventilation device comes into contact with a tight rubber 9 as a sealing material provided at the peripheral edge of the indoor opening 3 and a portion of the blade 4 below the support shaft 5. Thus, the indoor side opening 3 is configured to be closed. Further, the blade 4 is configured so as to be balanced and stopped at a predetermined angle toward the building opening portion when there is no wind inflow from outside. This is provided with a balance weight 17 for adjusting the stop position of the blade 4 at the end of the support shaft 5 protruding outside the duct 1, and the blade 4 is adjusted so as to be able to stop at a predetermined inclination angle. However, when the blade 4 is stopped at the hanging position, the balance weight 17 for adjusting the blade 4 stop position may be removed.

  Next, a compulsory closing device for the blade 4 will be described. A power box constituted by a combination of a shaft with a worm and a shaft with a worm gear is provided with a flange joint 13 at the end of the rotating shaft 6 protruding outside the duct 1. 14 is connected to the output shaft of the power box 14, the shaft of the geared motor 15 is connected to the input shaft at one end of the power box 14, and the shaft is machined so that the manual handle 16 can be easily fitted to the other end. No. 16 is installed in a state where it is removed because of danger in normal times, and is not fixedly attached.

  Next, the operation will be described. As shown by the white arrows in FIG. 1, the outside air flows from the opening 2 of the building of the duct 1 and flows out from the indoor opening 3. The blade 4 is in the position indicated by the solid line in FIG. 1 in the windless state, and moves around the support shaft 5 to the position indicated by the two-dot chain line at the second set amount, that is, the set maximum wind speed, depending on the strength of the wind. The blade 4 oscillates between the two directions indicated by arrows. If the blade 4 is in a wind from the no wind state to the primary set amount, the blade 4 is kept in a stopped state, and if the primary set amount is exceeded, the blade 4 rotates to the right according to the wind force, and is set to the secondary setting. If the amount is more than the amount, the blade 6 abuts against the tight rubber 9 at the periphery of the indoor opening 3 to close the indoor opening 3, and if the wind is weakened, it naturally returns according to the strength of the wind. In addition, for a sudden return, the shock absorber 10 reduces the shock and attenuates the swing of the blade 4.

  Next, an operation for forcibly closing the indoor opening 3 will be described. The geared motor 15 is actuated by a signal sent from a sensor (not shown) provided outside the building, and the rotating shaft 6 gradually rotates through the power box 14 so that the roller 7 at the tip of the arm 8 is simultaneously rotated. Rotate. Then, when the roller 7 comes into contact with the blade 4, the roller 7 is gradually pushed toward the indoor opening 3 while pushing the blade 4 gradually. A limit switch (not shown) works at the same time as the blade 4 comes into close contact with the tight rubber 9 at the peripheral edge of the indoor opening 3 to stop the rotation of the geared motor 15. Once stopped, the combination of the worm and the worm gear of the power box 14 and the gear train of the gad motor 15 act as a locking action of the rotating shaft to lock the blade 4 in the fully closed position.

  Next, the operation of releasing the forcibly closed blades will be described. When a closing release switch (not shown) is pressed, the geared motor 15 is reversed by a closing release signal and the rotating shaft 6 is rotated via the power box 14. Then, the roller 7 at the tip of the arm 8 is also reversed at the same time, and at the same time, the blade 4 is released from the close contact and is separated from the indoor side opening 3 by its own weight to return to the initial set position. The rotating shaft 6 further rotates and the arm returns to the initial setting position, and at the same time, a limit switch (not shown) works to stop the rotation of the geared motor. The moving state of the arm tip side attached to the rotating shaft is indicated by a double-headed arrow in FIG.

  The case of manually closing the blade forcibly closing device will be described. In the case of the manual type, the rotation is transmitted to the rotating shaft by turning the handle 16 around the shaft opposite to the geared motor 15 shaft connection of the power box 14 input shaft. Rotate. After that, the same operation as the electric type is performed, but the completion of closing stops when the handlebar rotation becomes heavy. Further, the release operation is the same as that of the electric type except that the rotation of the handle is reversed, but the completion of the release is stopped when the rotation of the handle becomes heavy. This means that a stop lever (not shown) provided on the handle shaft outside the duct abuts against a stopper provided on the outside of the duct.

  Sectional view of the natural ventilation device of the embodiment   Perspective view for explaining the structure of the natural ventilation device by a partially broken portion and for explaining the structure of the forced closing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Duct 2 Opening of building 3 Indoor opening 4 Blade 5 Support shaft 6 Rotating shaft 7 Roller 8 Arm 9 Tight rubber 10 Shock absorber 11 Bearing 12 Bearing 13 Flange joint 14 Power box 15 Geared motor 16 Handle 17 Balance weight

Claims (3)

  A horizontally long blade is provided in a horizontally long duct having a structure in which the inside and outside of the building communicate with each other, and the blade is inserted into a support shaft inserted through a bearing from the outside of the duct so that the blade can swing with respect to the wind. A seal member is provided on either the peripheral edge of the indoor opening of the duct or the peripheral edge of the blade that contacts the peripheral edge of the indoor opening, and when the blade reaches the set maximum deflection position In a natural ventilator configured such that the indoor opening is closed by a portion of the blade below the support shaft, a rotating shaft is passed through the building opening side of the blade parallel to the support shaft. An arm having a tip roller is fixed to a rotating shaft, and the blade is forcibly closed by opening the rotating shaft by an electric or manual forcible rotating means. Toss Natural ventilation system   When the rotating shaft is rotated by the forced rotating means and the indoor opening is forcibly closed by the blade, the blade or the forced rotating means is not moved. 2. The natural ventilation device according to claim 1, further comprising a lock means.   A wind sensor is provided outside the building, and the electric forced turning means automatically forcibly turns when the wind more than the setting is detected in conjunction with the wind sensor, so that the blades are opened in the indoor side opening. The natural ventilation device according to claim 1 or 2, wherein

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