JP6203094B2 - Ventilation device - Google Patents

Description

  The present invention relates to a ventilating device that is inserted and installed in a through-hole communicating indoors and outdoors from the indoor side and naturally ventilates the room.

  In recent years, housing has become highly airtight and highly insulated, resulting in high indoor carbon dioxide due to insufficient ventilation and the generation of volatile organic compounds (VOC) contained in wall materials in newly built houses. There was. As a countermeasure against such problems, in Japan, ventilation facilities must be installed in all newly built and renovated houses based on the amendment to the Building Standards Law, which came into effect on July 1, 2003, and it penetrates indoors and outdoors. A mouth is provided, and a ventilation device is provided at the through-hole.

  As a ventilation device attached to such a through hole, a ventilation device for 24-hour ventilation is often used. However, as airtightness has progressed, the operation of exhaust fans, etc. has led to a negative pressure inside the room, making it difficult to open front doors and windows. A differential pressure operation type ventilator that opens and closes the ventilation path using the pressure difference inside and outside the room generated by operation and supplies the outside air into the room has been installed.

  Patent Documents 1 and 2 disclose a differential pressure actuated type ventilation device.

Japanese Patent Laid-Open No. 10-205870 JP 2011-89712 A

  In the conventional differential pressure operation type ventilation device, in addition to the shutter mechanism part for adjusting the opening of the ventilation air passage, the panel and the like are necessary for the differential pressure operation type ventilation device, and all of the parts of the ventilation device are included However, there are some that are dedicated to the differential pressure actuated type ventilation device, and the versatility of the parts was poor.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the ventilation apparatus which is a differential pressure | voltage type and has high versatility of components.

  In order to solve the above-described problems and achieve the object, the present invention includes a pipe guide installed from the indoor side to a through-hole communicating indoors and outdoors, and a panel unit attached to the indoor side of the pipe guide. The ventilating device, the panel unit is disposed at the axial center of the frame body, the cylindrical frame body that is inserted into the pipe guide, the panel that covers the indoor opening of the pipe guide, and supports the panel. An opening / closing mechanism that opens and closes the indoor opening of the pipe guide by moving the panel forward and backward along the through-hole, and a shutter that opens and closes the indoor opening of the pipe guide according to a pressure difference between the inside and outside of the room. Equipped with a differential pressure unit that opens the shutter when the room is in a negative pressure environment and allows the outdoor air to flow into the room through the through-hole. That through-holes are formed, the opening and closing mechanism, characterized in that the differential pressure unit is disposed between the frame and the panel while passing through the through hole.

  According to the present invention, there is an effect that the versatility of parts is high and the cost can be reduced by sharing parts.

FIG. 1 is a perspective view showing an appearance of an embodiment of a ventilating apparatus according to the present invention. FIG. 2 is a cross-sectional view of the ventilation device according to the embodiment. FIG. 3 is an exploded perspective view of the ventilation device. FIG. 4 is an exploded perspective view of the panel unit. FIG. 5 is an exploded perspective view of the switchgear. FIG. 6 is a rear view of the first slider. FIG. 7 is a view showing the structure of the engaging portion between the first slider and the panel. FIG. 8 is a perspective view of the second slider. FIG. 9 is a perspective view showing a state in which the first slider and the second slider are combined. FIG. 10 is a rear view of the first slider in which the guide path to the panel full-close locking portion is parallel to the locking portion. FIG. 11 is a diagram illustrating an example of a general water stop structure. FIG. 12 is a diagram illustrating a water stop structure of the ventilation device according to the embodiment. FIG. 13 is an exploded perspective view of the ventilation device when the wind direction adjusting plate is attached. FIG. 14 is a detailed view of the wind direction adjusting plate mounting portion. FIG. 15 is a diagram schematically showing the direction of airflow flowing from the panel unit into the room without the wind direction adjusting plate being installed. FIG. 16 is a diagram schematically showing the direction of airflow flowing from the panel unit into the room with the airflow direction adjusting plate installed so as to cover the lower part of the unit box. FIG. 17 is an exploded perspective view of the panel unit with a differential pressure unit. FIG. 18 is an exploded perspective view of the differential pressure unit. FIG. 19 is a perspective view of the internal structure of the ventilation device with a wind direction adjusting function. FIG. 20 is a diagram schematically illustrating the direction of airflow flowing from the panel unit into the room in a state where the airflow direction adjusting lever is disposed on the bridge. FIG. 21 is a diagram schematically illustrating the direction of airflow flowing from the panel unit into the room when the airflow direction adjusting lever is moved to the left side.

  Hereinafter, embodiments of a ventilating apparatus according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a perspective view showing an appearance of an embodiment of a ventilating apparatus according to the present invention. FIG. 2 is a cross-sectional view of the ventilation device according to the embodiment. The ventilation device 1 according to the embodiment is installed in a ventilation through-hole of a building, and is inserted into a duct or pipe that communicates indoors and outdoors from the room side.

  FIG. 3 is an exploded perspective view of the ventilation device. The ventilation device 1 includes a pipe guide 2 that is connected to a duct and is attached along a wall surface in the room so as to cover an end portion on the indoor side, and a panel unit 5 that is provided in the wind tunnel and expands and contracts in the center line direction. Yes. The panel unit 5 includes an engagement protrusion 6 with the pipe guide 2. By rotating the panel unit 5 in contact with the pipe guide 2, the engagement protrusion 6 is engaged with the engagement recess 6 a of the pipe guide 2, and the panel unit 5 is detachably attached to the pipe guide 2.

  FIG. 4 is an exploded perspective view of the panel unit. The panel unit 5 includes a panel 7, an opening / closing device 8, a filter 9, and a filter holder 10. The opening / closing device 8 adjusts the position of the panel 7 by an opening / closing mechanism 8a that expands and contracts in the center line direction. The filter retainer 10 is provided with engaging means for the opening / closing device 8, specifically a unit box 39 described later, so as to prevent the filter 9 from falling off the panel unit 5.

FIG. 5 is an exploded perspective view of the switchgear. The opening / closing device 8 includes a first slider 20, a second slider 33, a coil spring 38, a unit box 39, and a cover 42. The first slider 20, the second slider 33, the coil spring 38, and the cover 42 are opened and closed. A mechanism 8a is configured. The opening / closing mechanism 8a is supported by a unit box 39 as a frame. The first slider 20 and the second slider 33 are made of resin. The coil spring 38 biases the first slider 20 and the second slider 33 away from each other. The unit box 39 has a cylindrical shape provided with a mechanism support portion 39 a on the axis, and is arranged along the center line of the wind tunnel of the pipe guide 2 when the panel unit 5 is attached to the pipe guide 2. A claw portion 41 is formed at the end of the mechanism support portion 39a on the outdoor side. By engaging the claw portion 41 with the hole portion 43 formed in the cover 42, the cover 42 is integrated with the mechanism support portion 39a to constitute a resin case 8b. The case 8b houses the first slider 20 and the second slider 33 and restricts the sliding of the second slider 33.

  FIG. 6 is a rear view of the first slider. A cylindrical panel locking portion 21 is formed at the tip of the first slider 20. Further, a wind direction adjusting plate mounting claw 23 and a wind direction adjusting plate fixing wall 24 are provided near the tip of the first slider 20. These will be described in detail later. Further, the first slider 20 is provided with a concave and looped expansion / contraction path 25 and a guide groove 22 for preventing rattling during expansion / contraction. The expansion / contraction path 25 is configured by connecting a panel full-opening locking part 81 and a panel full-closing locking part 32 by an extension path 27 and a contraction path 28, and has a long loop shape in the central axis direction. Yes. The contraction path 28 is formed to bend outward in the width direction toward the maximum contraction step 28 a, and the maximum contraction step 28 a of the contraction path 28 is closer to the guide groove 22 than the panel full-close locking portion 32. It is provided at a position where the hook 36 is disposed when the opening / closing mechanism 8a is contracted, rather than a position where the hook 36 is disposed in the panel full-close locking portion 32 as will be described later.

The telescopic path 25 of the first slider 20 is provided with a plurality of rack- like teeth 26 on which a hook 36 of a locking portion 35 of the second slider 33 described later is detachably hooked. The side surface of the tooth 26 close to the panel full opening locking portion 81 is formed as a slope, and the surface close to the panel full closing locking portion 32 abuts the end surface of the hook 36 of the locking portion 35 of the second slider 33 described later. It is configured to latch. The partition wall 29 that separates the extension path 27 and the contraction path 28 is provided with release means 31 having a slope that guides the hook 36 of the second slider 33 to the extension path 27.

  FIG. 7 is a view showing the structure of the engaging portion between the first slider and the panel. The panel locking portion 21 of the first slider 20 is formed in a cylindrical shape, and an engaged portion 21a is formed on the upper surface in the cylinder. On the other hand, a cylindrical engagement tube portion 7a is provided on the back surface of the panel 7, and a claw 7b is formed at an upper end portion of the engagement tube portion 7a. When the engaging cylinder portion 7 a is inserted into the panel locking portion 21, the claw 7 b engages with the engaged portion 21 a and the panel 7 is fixed to the first slider 20.

  FIG. 8 is a perspective view of the second slider. The second slider 33 is formed in a planar rectangular disk shape having a size that matches the first slider 20, and a stopper protrusion 34 that slides in the guide groove 22 of the first slider 20 is formed on the rear surface of the front end portion. Has been. The second slider 33 is elastically deformable with a hook 36 for sliding the telescopic path 25 of the first slider 20 in the center of the window provided behind the stopper projection 34 and locking the first slider 20. An arm-shaped locking portion 35 is formed. Further, an elastically deformable locking projection 37 for locking to the case 8 b is provided on the rear end portion rear surface of the second slider 33.

  FIG. 9 is a perspective view showing a state in which the first slider and the second slider are combined. The first slider 20 and the second slider 33 are combined so that they can slide within a predetermined range. When the first slider 20 is in its maximum extension state, the stopper projection 34 of the second slider 33 abuts the rear end of the guide groove 22. By contacting, the spring force in the extending direction of the coil spring 38 is received, and the entire locking portion 35 is placed in a free state. In the maximum contracted state, the hook 36 abuts against the surface of the panel full-close locking portion 32 of the extension path 27 and the contraction path 28 of the first slider 20 so that the spring force in the extension direction of the coil spring 38 is received. The first slider 20 is held in a state where the locking portion 35 is not elastically deformed.

  As described above, the contraction path 28 of the first slider 20 is formed to bend outward in the width direction toward the maximum contraction stage 28a, and the maximum contraction stage 28a of the contraction path 28 is a panel full-close engagement member. It is provided at a position closer to the guide groove 22 than the stop portion 32. Therefore, when the first slider 20 and the second slider 33 are pressed and contracted until the hook 36 is disposed at the maximum contraction step 28a and the compression force is released after the teeth 26 forming the locking step are overcome, the hook of the second slider 33 is obtained. 36 reaches the panel full-close locking portion 32 from the maximum contraction step 28 a through the guide path 30.

  FIG. 10 is a rear view of the first slider in which the guide path to the panel full-close locking portion is parallel to the locking portion. When the guide path to the panel full-close locking portion is the expansion / contraction path 44 parallel to the locking portion, when the first slider is pushed to the maximum position quickly, the hook of the second slider causes the panel of the contraction path 46 of the first slider to The panel 7 cannot be stopped in the fully closed state because it passes through the fully closed locking portion 47 and proceeds to the extension path 45.

  On the other hand, in the present embodiment, as shown in FIG. 6, the maximum contraction step 28a of the contraction path 28 is provided at a position that requires contraction more than the panel full-close locking portion 32. It is possible to stop the panel 7 in the fully closed state by reliably stopping the hook 36 of the second slider 33 with the panel full closing locking portion 32.

  The opening / closing device 8 can be assembled by simply inserting the first slider 20, the second slider 33, and the coil spring 38 into the case 8 b constituted by the unit box 39 and the cover 42. In the maximum extension state and the maximum contraction state of the first slider 20, the spring force of the coil spring 38 coincides with the arm direction of the locking portion 35, and the elastic force does not occur. Therefore, the opening / closing mechanism of the panel 7 can be maintained for a long period of time.

  The ventilator 1 needs to be provided with a water stop structure in order to prevent rainwater and the like from entering from the outdoor side to the indoor side. FIG. 11 is a diagram illustrating an example of a general water stop structure. FIG. 12 is a diagram illustrating a water stop structure of the ventilation device according to the embodiment. In a general water stop structure of a ventilating device, the gap between the pipe guide 92 and the panel unit 95 is sealed using the packing 3. However, if the packing 3 is used, the number of parts increases due to water stoppage. Therefore, in this embodiment, a water stop structure with a part shape is provided for the purpose of reducing the number of parts by eliminating the packing 3.

  The water stop structure of the ventilator 1 is configured between the pipe guide 2 and the unit box 39 of the panel unit 5, and is provided with a ring-shaped water stop convex portion 4 on the duct insertion side inner diameter portion of the pipe guide 2. A step 40 is provided at the outer peripheral end of the box 39. The step 40 of the unit box 39 has the same size as the inner diameter of the water stopping convex portion 4 of the pipe guide 2.

  By providing the water stop convex part 4 on the duct insertion side inner diameter part of the pipe guide 2, rainwater and the like in the duct are blocked, and rainwater and the like enter the gap between the pipe guide 2 and the unit box 39. On the other hand, the step 40 of the unit box 39 is brought into surface contact with the water stop convex portion 4 of the pipe guide 2 to prevent water from entering the rainwater. Normally, the duct communicating indoors and outdoors has a downward slope from the indoor side to the outdoor side, so that the blocked rainwater or the like is discharged to the outdoor side without continuing to stay.

  Also, assuming that the installation position of the ventilator 1 is close to the sleeve wall, depending on the installation environment of the ventilator 1, it is necessary to adjust the direction of the airflow flowing from the ventilator 1 to the room in the panel unit 5, and the ventilator 1 has a configuration in which a wind direction adjusting plate 11 can be attached.

  The wind direction adjusting plate of a general ventilation device is attached to the panel. The wind direction adjusting plate is sandwiched between a panel without the wind direction adjusting plate and other parts, or a member for attaching the wind direction adjusting plate. There is a panel with a wind direction adjustment plate attached to a panel with a separate part with a stop, but two types of dedicated panels are required, one with no wind direction adjustment plate and one with a wind direction adjustment plate. When trying to do so, it was necessary to replace the entire ventilation device or panel with a dedicated one, which was not versatile.

  FIG. 13 is an exploded perspective view of the ventilation device when the wind direction adjusting plate is attached. FIG. 14 is a detailed view of the wind direction adjusting plate mounting portion. As described above, in the present embodiment, the wind direction adjusting plate mounting claw 23 and the wind direction adjusting plate fixing wall 24 are provided at the tip of the first slider 20 of the opening / closing mechanism 8a. For this reason, since the wind direction adjusting plate 11 is fixed between the wind direction adjusting plate fixing wall 24 by engaging the wind direction adjusting plate 11 with the wind direction adjusting plate mounting claw 23, the wind direction adjusting plate 11 is attached to the panel unit. No additional parts other than the wind direction adjusting plate 11 are required when attaching to 5. By providing the wind direction adjusting plate 11, the direction of the airflow flowing from the panel unit 5 into the room can be adjusted. FIG. 15 is a diagram schematically showing the direction of airflow flowing from the panel unit into the room without the wind direction adjusting plate being installed. FIG. 16 is a diagram schematically showing the direction of airflow flowing from the panel unit into the room with the airflow direction adjusting plate installed so as to cover the lower part of the unit box. In the state where the wind direction adjusting plate 11 is not installed, airflow flows from the panel unit 5 in all directions, up, down, left, and right. On the other hand, when the wind direction adjusting plate 11 is installed so as to cover the lower part of the unit box 39, the airflow does not flow downward from the panel unit 5, but the airflow flows in the left and right and upward directions.

  Further, the wind direction adjusting plate 11 is provided with four fixing holes 12, and the wind direction adjusting plate 11 is removed from the wind direction adjusting plate mounting claw 23 and attached by changing the direction, so that the panel unit can be installed after installation. The direction of airflow flowing from 5 to the room can be adjusted.

  FIG. 17 is an exploded perspective view of the panel unit with a differential pressure unit. When installing a ventilator at the vent for the purpose of suppressing the indoor negative pressure environment due to the operation of the exhaust blower and preventing cold air intrusion during normal ventilation, keep the opening area small during normal ventilation and intrude cold air The panel unit 5 is configured by adding a differential pressure unit 13 that expands the opening area when the room is in a negative pressure environment of a certain pressure or higher. FIG. 18 is an exploded perspective view of the differential pressure unit. The differential pressure unit 13 includes a ring 14 to which each component of the differential pressure unit 13 is attached, a shutter 16 that adjusts the opening of the air supply passage, and the shutter 16 so that the shutter 16 does not operate unless a negative pressure environment exceeding a certain pressure is generated in the room. And a spring 17 for adjusting the moving force. The shutter 16 is pivotally supported by a bridge 18 provided at the center of the ring 14. When the interior of the room is a negative pressure environment exceeding a certain pressure, the shutter 16 rotates inward against the elastic force of the spring 17. Increase the opening area. In addition, although the structure which has the two shutters 16 is taken as an example here, the area which each of the left and right shutters 16 covers the indoor side opening of the pipe guide 2 is the same.

  An opening / closing mechanism 8a, specifically, an opening / closing mechanism through hole 18a through which the first slider 20 passes, is formed at the approximate center of the bridge 18.

  The ring 14 of the differential pressure unit 13 is designed to share parts with a product that does not have the differential pressure unit 13 mounted, and even if a malfunction occurs in the differential pressure unit 13 portion in a state where the differential pressure unit 13 is installed in the through hole, A fixing mechanism 15 having a shape that can be attached to and detached from the unit box 39 is provided so that the problem can be dealt with by replacing only the pressure unit 13. In addition, the assembly is improved by adopting a structure in which the unit box 39 and the differential pressure unit 13 can be easily attached.

  Installation of the ventilation device 1 such as the installation position is close to the sleeve wall in the ventilation device installed at the ventilation port for the purpose of suppressing the indoor negative pressure environment due to the operation of the exhaust blower and preventing cold air intrusion during normal ventilation Depending on the environment, it is necessary to adjust the direction of the airflow flowing from the ventilator 1 to the room. FIG. 19 is a perspective view of the internal structure of the ventilation device with a wind direction adjusting function, and shows a state where the panel 7 is removed from the panel unit 5. The differential pressure unit 13 is installed in the pipe guide 2 with the first slider 20 passing through the opening / closing mechanism through hole 18a.

  When the wind direction adjustment lever 19 incorporated in the differential pressure unit 13 does not need to be adjusted, the position where it overlaps with the bridge 18 in the center of the ring 14 of the differential pressure unit 13 is set as the position of the wind direction adjustment lever 19 and the air flow is controlled. The opening / closing operation of the shutter 16 of the differential pressure unit 13 is controlled by moving the wind direction adjusting lever 19 in the direction to be controlled. FIG. 20 is a diagram schematically illustrating the direction of airflow flowing from the panel unit into the room in a state where the airflow direction adjusting lever is disposed on the bridge. FIG. 21 is a diagram schematically illustrating the direction of airflow flowing from the panel unit into the room when the airflow direction adjusting lever is moved to the left side. In a state where the wind direction adjusting lever 19 is disposed so as to overlap the bridge 18, air current flows from the panel unit 5 in all directions, up, down, left, and right. On the other hand, in the state where the wind direction adjusting lever 19 is moved to the left side, the wind direction adjusting lever 19 prevents the left shutter 16 from rotating, so that the airflow flows from the panel unit 5 only to the right side of the center in the left-right direction.

  By providing the airflow direction adjustment lever 19, the negative pressure environment in the room due to the operation of the exhaust blower is suppressed, and the direction of the airflow flowing into the room is also maintained by the ventilation device installed at the ventilation port for the purpose of preventing cold air intrusion during normal ventilation. Adjustment is possible, and it is possible to change the direction of airflow flowing from the ventilator to the room even after installation.

  Depending on the installation position of the ventilator, there may be a problem that the wall surface around the indoor opening surface of the ventilator becomes dirty due to dust mixed in the outside air flowing into the room through the ventilator. In the ventilation device 1 of the form, the air pressure adjusting lever 19 is provided in the differential pressure unit 13 so that the opening and closing of the left or right shutter 16 can be suppressed. Prevents the wall from facing and prevents contamination of the wall surface.

  As described above, the ventilating apparatus according to the present invention is useful in that the parts have high versatility between the differential pressure operation type and the others, and the parts can be shared.

  DESCRIPTION OF SYMBOLS 1 Aeration apparatus, 2,92 Pipe guide, 3 Packing, 4 Water-stop convex part, 5,95 Panel unit, 6 Engagement protrusion, 6a Engagement recessed part, 7 Panel, 7a Engagement cylinder part, 7b Claw, 8 Opening and closing Device, 8a opening / closing mechanism, 8b case, 9 filter, 10 filter restraint, 11 wind direction adjusting plate, 12 fixing hole, 13 differential pressure unit, 14 ring, 15 fixing mechanism, 16 shutter, 17 spring, 18 bridge, 18a opening / closing mechanism Through-hole, 19 Wind direction adjusting lever, 20 First slider, 21 Panel locking portion, 21a Engaged portion, 22 Guide groove, 23 Wind direction adjusting plate mounting claw, 24 Wind direction adjusting plate fixing wall, 25, 44 Telescopic path , 26 teeth, 27, 45 extension path, 28, 46 contraction path, 28a maximum contraction stage, 29 partition wall, 30 guide path, 31 release means, 32, 7 Fully-closed locking part, 33 Second slider, 34 Stopper protrusion, 35 Locking part, 36 Hook, 37 Locking protrusion, 38 Coil spring, 39 Unit box, 39a Mechanism support part, 40 Step, 41 Claw part , 42 Cover, 43 hole, 81 Panel locking part for full opening.

Claims (3)

A ventilation device having a pipe guide installed from the indoor side at a through-hole communicating with the outside of the room, and a panel unit attached to the indoor side of the pipe guide,
The panel unit is
A cylindrical frame inserted into the pipe guide;
A panel covering the indoor opening of the pipe guide;
An opening / closing mechanism that is disposed at the axial center of the frame body, supports the panel, advances and retracts the supported panel along the through-hole, and opens and closes the indoor opening of the pipe guide;
A shutter that is biased by a spring and opens and closes the indoor side opening of the pipe guide according to a pressure difference between the outside and the inside of the pipe guide is opened, and the outdoor air is opened by opening the shutter when the room is in a negative pressure environment. A differential pressure unit that flows into the room through
The differential pressure unit has a through hole formed through the opening and closing mechanism at a central portion, and the differential pressure unit is interposed between the frame body and the panel in a state where the opening and closing mechanism passes through the through hole. Is installed ,
The differential pressure unit has two shutters, and each of the two shutters has the same area covering the indoor opening of the pipe guide,
Said two one of the shutter, ventilation device according to claim Rukoto that having a closure means for maintaining the closed state of the indoor-side opening of the pipe guide.   The ventilation device according to claim 1, wherein the differential pressure unit is inserted and held in the pipe guide. The ventilation device according to claim 1 or 2 , wherein the closing means is a wind direction adjusting lever installed between the two shutters so as to be rotatable in the cross-sectional direction of the through-hole.

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