JP4769131B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a ventilation device provided at an air inlet / outlet communicating with the outside of a building.

Ventilators that take outdoor air naturally indoors without opening and closing windows are known.
Patent Document 1 discloses a technique for opening and closing a wind tunnel by rotating an air volume adjusting valve, and Patent Document 2 discloses
A technique is disclosed in which a single elastic body biases the air volume adjusting plate in the direction of opening, and a strong wind that is higher than the light wind biases the air volume adjusting plate in the direction of opening of the air volume adjusting plate.
Here, when the air channel is opened and closed by turning the air flow adjusting valve, and the air flow adjusting valve is elastically biased in the opening direction so as to be a rotational resistance against strong winds that are more than fine wind, When the wind tunnel is completely closed, a large elastic force remains in the direction in which the air flow adjustment valve opens, and a large force is required to fully close the air flow adjustment valve, which is reliable for maintaining the fully closed state. There is a problem that lacks.

JP-A-10-232039 JP 2005-273256 A

  An object of the present invention is to provide a ventilator that is excellent in opening / closing operability of the air volume adjusting valve and has high airtightness and watertightness in a closed state.

  The ventilator according to claim 1 includes a wind tunnel, an air volume adjusting valve, a primary elastic body, a secondary elastic body, and a closing mechanism, and the wind tunnel has an air inlet / outlet communicating with the inside and outside of the building, and the air volume is adjusted. The valve rotates in the direction in which the wind tunnel is fully opened in the absence of wind, receives the wind, and closes the wind tunnel. The primary elastic body rotates in the direction in which the air volume adjustment valve closes the wind tunnel when the wind speed is below a predetermined level. The air volume adjustment valve is urged in the direction to open the wind tunnel so as to be a rotational resistance for moving, and the secondary elastic body rotates in a direction in which the air volume adjustment valve further closes the wind tunnel when the wind speed is higher than a predetermined wind speed. The air volume adjustment valve is urged in the direction of opening the wind tunnel so as to be a rotational resistance, and the air volume passing through the wind tunnel is kept constant by the primary elastic body and the secondary elastic body. , An operating part, a tightening cam that rotates about an axis parallel to the rotation axis of the air volume adjusting valve, and a wind tunnel The clamping cam has a support and a valve contact portion, the support and the valve contact portion are connected to each other so as to be rotatable at a predetermined angle, and the guide member is moved by the valve contact portion. The support is rotated by the operation of the operation part, the valve contact part is in contact with the air volume adjustment valve, and is moved along the inclined surface of the guide member until the air quantity adjustment valve is closed. It is characterized by rotating.

In the ventilator according to the first aspect of the present invention, the closing mechanism of the air volume adjusting valve is provided with a tightening cam that rotates about an axis parallel to the rotation axis of the air volume adjusting valve, and the tightening cam is a rotating support. And the valve abutment portion, the support and the valve abutment portion are rotatable by a predetermined angle, and the guide member provided in the wind tunnel has an inclined surface for guiding the movement of the valve abutment portion. When the valve contact portion rotates the air volume adjustment valve to the closed state, the position of the valve contact portion that contacts the air volume adjustment valve is not on the same circumference with respect to the rotation center of the tightening cam. Since the rotation trajectory difference (deviation from the same circumference) is absorbed by the rotation, the opening / closing operability is excellent and the design degree of the shape of the air volume adjusting valve is high.
In addition, since the valve contact portion is sandwiched between the air volume adjusting valve and the guide member when the air volume adjusting valve is in the closed state, a part of the load applied to the tightening cam is received by the guide member. Easy to maintain and highly reliable.

An embodiment of a ventilator according to the present invention will be described below with reference to the drawings.
FIG. 1 shows an overall perspective view of a ventilator 1 according to the present invention.
In FIG. 1, the vicinity of both ends in the longitudinal direction of the ventilator and the vicinity of the closing mechanism of the air volume adjusting valve 20 including the tightening cam 60 are shown as a cross-sectional perspective view of the main part, and the display of the intermediate part is omitted.
The length of the ventilator in the longitudinal direction is adjusted to the size of the indoor / outdoor air inlet / outlet provided in the building, and a plurality of tightening cams 60 may be arranged according to the length of the air volume adjusting valve 20.
First, the overall configuration will be described with reference to FIG. 1, and the detailed configuration will be described later.
A wind tunnel 10 made of aluminum extruded shapes or the like is used to form a wind tunnel 10 that communicates the interior and exterior of the building. Both ends of the wind tunnel 10 in the longitudinal direction are closed by side walls 13 and 14.
In the longitudinal direction of the wind tunnel 10, there is an air volume adjusting valve 20 that pivots around a pivot shaft 21 so as to be freely opened and closed.
One end of the rotating shaft 21 extends to the outside of the side wall 13, and a boss 30 that rotates and swings together with the air volume adjusting valve 20 is connected. Between the boss 30 and the bracket 33 attached to the side wall 13, a coil spring or the like 1 The secondary elastic body 32 is connected and urged in the direction to open the air volume adjusting valve, and when the wind is weak, the primary elastic body 32 becomes a rotational resistance with respect to the closing direction of the air volume adjusting valve 20, and the wind is in the wind tunnel. When passing through the air, it acts so that the amount of air passing through becomes constant.
The other end of the rotation shaft 21 extends to the outside of the side wall 14 and is connected to an abutting member 41 that rotates and swings with the rotation of the air volume adjusting valve 20. A base 40 is provided on the side wall 14 to provide a coil spring or the like. The secondary elastic body 42 is held.
When the wind is weak, the contact member 41 does not contact the secondary elastic body, and only the primary elastic body 32 described above is a rotational resistance with respect to the closing direction of the air volume adjustment valve, and the wind speed exceeds a predetermined level. Then, the abutting member 41 abuts against the secondary elastic body 42 in the compressing direction, and the secondary elastic body 42 becomes a rotational resistance with respect to the closing direction of the air volume adjusting valve 20.
Accordingly, when the wind speed exceeds a predetermined value, the amount of air passing through the wind tunnel is kept constant by the rotational resistance of the primary elastic body 32 and the secondary elastic body 42.
In order to bring the air volume adjusting valve 20 into the wind tunnel closed state, the tightening cam 60 connected to the support shaft 52 is rotated clockwise by pushing the handle of the operation unit 50 to the back side in FIG.
As a result, the support 61 constituting the tightening cam 60 and the valve abutting portion 62 articulated ahead of it rotate, the valve abutting portion 62 abuts on the air volume adjusting valve 20 and rotates the air volume adjusting valve 20 in the closing direction. .
When the air volume adjusting valve 20 rotates and approaches the closed position, the valve contact portion 62 also comes into contact with the guide member 64 to guide the movement of the valve contact portion 62.
Further, with the rotation of the support shaft 52, the base 40 moves forward in FIG. 1 so that the secondary elastic body 42 does not retreat forward and come into contact with the contact member 41 in the closed state of the air volume adjustment valve 20. It has become.

Next, the detailed configuration and operation of each part will be described.
Based on FIG. 2, the movement of the air volume adjusting valve 20 at the time of light wind will be described.
FIG. 2 (a) shows a no-wind state, and FIG. 2 (b) shows a state where a slight wind has flowed into the wind tunnel.
In the windless state, the opening d ₁ formed on both sides of the wind tunnel walls 11, 22 and the air volume adjusting valve 20 is maximized, and the rotation shaft 21 of the air volume adjusting valve 20 has a rotating swing of the air volume adjusting valve 20. A boss 30 that pivots and swings following the movement is connected.
A bracket 33 is attached to the side wall 13 of the wind tunnel with screws 33a or the like. One end 32b of a primary elastic body 32 such as a coil spring is connected to the bracket 33, and the other end 32a is connected to the boss 30.
As shown in FIG. 2A, a stopper 31 with which the boss 30 abuts is provided so as not to rotate backward from the fully open state of the air volume adjusting valve 20 to the b side.
As shown in FIG. 2B, when a slight wind flows into the wind tunnel 10, the air volume adjusting valve 20 rotates in the direction of the arrow a.
The air volume adjusting valve 20 has a wing shape so that it is easy to take in the wind when there is very little breeze.
The air volume adjusting valve 20 is urged in the opening direction by the primary elastic body 32, and receives the rotational resistance due to the extension of the primary elastic body 32 according to the wind speed from the outside flowing into the wind tunnel 10, thereby opening the opening d ₂ . Since the air flow is adjusted, the amount of air flowing into the room is almost constant.

For example, FIG. 3 shows the movement of the air volume adjusting valve 20 in the case where a wind of a predetermined fine wind or more such as a wind speed of 3 m / min or more flows into the wind tunnel 10.
A boss-like abutting member 41 that pivots and swings together with the air volume adjusting valve 20 is connected to the pivot shaft 21.
On the other hand, a shaft 43 is attached to the base 40 so as to move up and down with respect to the base 40, and this shaft 43 is elastic in a direction in which the head 43a protrudes upward in FIG. 3 by a secondary elastic body 42 such as a coil spring. Energized.
As shown in FIG. 3A, the air volume adjusting valve 20 is in a state where the contact member 41 is not in contact with the head 43a of the shaft 43 urged by the secondary elastic body 42 as shown in FIG. Rotating and swinging.
From the state of the opening d ₃ at this time, the wind speed is pivoted in the further closing direction air flow rate adjusting valve 20 so that the state of the opening d ₄ in order to reduce the air volume flowing into the indoor becomes stronger.
In such a state, the contact portion 41 a of the contact member 41 comes into contact with the head 43 a of the shaft 43.
Since the head 43a is urged in the protruding direction by the secondary elastic body 42, a repulsive force is generated when the contact member 41 hits the head 43a.
This elastic repulsive force acts in the direction in which the air volume adjustment valve 20 opens, and acts as a rotational resistance in the direction in which the air volume adjustment valve 20 closes, so that the air volume flowing into the room is substantially constant.

Next, an operation of closing the air volume adjusting valve 20 will be described with reference to FIGS.
FIG. 4 shows a state in which the base 40 moves by operating the handle of the operation unit 50, and FIG. 5 shows that the tightening cam 60 rotates in conjunction with the movement of the operation unit 50, and the wind tunnel 10 is closed by the air volume adjustment valve 20. FIG. 6 shows an airtight and watertight state when the airflow adjustment valve 20 is closed.
The movement of the base 40 will be described with reference to FIG.
When the handle of the operation unit 50 is operated from the position shown in FIG. 4A to the position shown in FIG. 4B (the handle is moved to the left in FIG. 4), the substantially L-shaped handle rotates around the fulcrum shaft 50a. To do.
The elongated hole 51a provided in the first interlocking arm 51 and the L-shaped handle tip 50b are slidably connected, and the first interlocking arm 51 is fixedly connected to the support shaft 52. Therefore, in FIG. The support shaft 52 is also rotated clockwise by the clockwise rotation, and the fastening cam 60 is rotated clockwise in FIG. 5 as shown in FIG.
As shown in FIG. 4, the support shaft 52 is connected to the second interlocking arm 53, the third interlocking arm 54 is connected to the tip of the second interlocking arm 53, and the third interlocking arm 54 and the base 40 are connected to each other. The shaft 40 is coupled by the shaft coupling portion 54a. Since the base 40 is rotatably attached to the bracket 44, the base 40 rotates counterclockwise in FIG.
As a result, as shown in FIG. 4B, the head 43 a of the shaft 43 that is elastically biased by the secondary elastic body 42 moves backward and is connected to the rotating shaft 21 of the air volume adjusting valve 20. Even if 41 rotates to the closed state of the air volume adjusting valve 20, it does not contact the head 43a.
Therefore, in the closed state of the air volume adjusting valve 20, the secondary elastic body moves and is not biased in the opening direction of the air volume adjusting valve 20, so that airtightness and watertightness are improved.
The example shown in FIG. 4 is an example in which the base 40 rotates and moves backward, but it is not limited to rotational movement as long as it can move to a state where the secondary elastic body does not act.
The example of the operation unit 50 shown in FIG. 4 is for manually operating the handle, but this portion may be replaced with an electric drive source for electric operation.
The movement of the air volume adjusting valve 20 due to the rotation of the tightening cam 60 will be described with reference to FIG.
The tightening cam 60 includes a support rod 61 and a valve contact portion 62. One end 61a of the support rod 61 is fixedly connected to the support shaft 52, and the valve contact portion 62 is connected to the other end of the support shaft 61 by a rotational connection portion 61b. It is.
The support 61 and the valve contact portion 62 are rotatable about 10 degrees with each other by a rotation connecting portion 61b. When the support 61 is rotated by the rotation of the support shaft 52, the state shown in FIG. As shown in FIG. 5B, the tip of the valve abutting portion 62 abuts on the upper end side portion 20a of the blade of the air volume adjusting valve 20, and the air volume adjusting valve 20 rotates in the closing direction.
A roller 63 is pivotally attached to the tip of the valve contact portion 62 by a shaft attachment portion 62a so that the air volume adjustment valve 20 can be easily pushed.
The air volume adjusting valve 20 has a blade shape so that the air can easily flow. The position where the air volume adjusting valve 20 contacts the roller shifts with rotation, and therefore the abutting position is the same circumference with respect to the rotation center of the tightening cam 60. It is not a rotational trajectory that moves up.
Therefore, a guide member 64 that guides the movement of the tip of the valve contact portion 62 is attached to the wind tunnel wall 12 using a fixing member 65 such as a screw to guide the movement of the roller 63 along the guide surface 64a of the guide member 64. Since the rotation connecting portion 61b between the support 61 and the valve contact portion 62 is rotatable at a predetermined angle of about 10 degrees, the same circle as the air volume adjusting valve 20 as shown in FIG. The air volume adjustment valve 20 is pushed in until the closed state while absorbing the deviation from the periphery.
Therefore, even if the outer shape of the air volume adjusting valve changes, the change amount is absorbed by the angle change between the support 61 and the valve contact portion 62, so that the degree of freedom in designing the air volume adjusting valve is high.
Further, as shown in FIG. 5C, in the closed state, the tip of the valve contact portion 62 is sandwiched between the guide member 64 and the air volume adjusting valve 20, so that the repulsion generated in the air volume adjusting valve 20. The force is also received by the guide member 64, and the concentration of the load on the tightening cam 60 is suppressed.
The guide member 64 is fixed to the wind tunnel wall 12 by a fixing member 65 so that the movement of the guide member 64 can be adjusted in the vertical direction.
As shown in FIG. 6, tight materials 71 and 72 are respectively attached to the wind tunnel walls 11 and 12 along the longitudinal direction, and both ends in the longitudinal direction of the wind tunnel are sponge-like side seal members on the side walls 13 and 14 of the wind tunnel. 74 is attached, and an end seal member 73 is attached to the end face of the air volume adjusting valve 20.
FIG. 6 shows the end face of the air volume adjusting valve 20 by a two-dot chain line, and shows the direction of the side wall 13 from the inside of the wind tunnel 10, and the portions shown by dots represent sponge-like sealing materials.
The end seal member 73 has a contact piece 73a on the lower side when the plate is closed as shown in the sectional view taken along the line AA in FIG. 6 (a), the end seal member 73 and the side seal member 74 do not come into contact with each other when the air volume adjusting valve 20 opens the wind tunnel 10, but when the air volume adjusting valve 20 is in the closed state as shown in FIG. 6 (b). The part seal member 73 and the side seal member 74 are in contact with each other to ensure airtightness and watertightness.
In the closed state of the air volume adjusting valve 20, as shown in FIG. 4, the secondary elastic body 42 is retracted by the movement of the base 40 and does not contact the contact member 41. Since the repulsive force is not received in the direction in which the air volume adjusting valve 20 opens, the airtightness and watertightness at the time of closing are improved.
In addition, although the Example shown in FIG. 1 provides the ventilation apparatus 1 in the horizontal (horizontal) direction with respect to a building, you may provide in a vertical (vertical) direction.

The perspective view of the ventilator which concerns on this invention is shown. It is operation | movement condition explanatory drawing of the primary elastic body at the time of a light breeze. It is operation | movement condition explanatory drawing of the secondary elastic body in the wind speed more than a fine wind. It is movement explanatory drawing of the secondary elastic body at the time of air volume adjustment valve closing. It is operation | movement explanatory drawing of a fastening cam. It is explanatory drawing of airtightness and watertightness.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ventilation apparatus 10 Wind tunnel 20 Air volume adjustment valve 21 Rotating shaft 32 Primary elastic body 40 Base 41 Contact member 42 Secondary elastic body 50 Operation part 52 Support shaft 60 Tightening cam 61 Supporting 62 Valve contact part 64 Guide member

Claims (1)

A wind tunnel, an air flow regulating valve, a primary elastic body, a secondary elastic body, and a closing mechanism;
The wind tunnel has an air inlet / outlet communicating with the inside and outside of the building,
The air volume adjusting valve opens the wind tunnel fully in the absence of wind, and rotates in a direction to receive the wind and close the wind tunnel,
The primary elastic body urges the air volume adjusting valve in the direction of opening the wind tunnel so that the air volume adjusting valve rotates when the air speed adjusting valve rotates below the predetermined wind speed.
The secondary elastic body urges the air volume adjusting valve in the direction of opening the wind tunnel so that the air volume adjusting valve rotates in the direction of further closing the wind tunnel when the air speed is higher than a predetermined wind speed. The air volume passing through the wind tunnel is kept constant between the elastic body and the secondary elastic body,
The closing mechanism has an operation part, a tightening cam that rotates about an axis parallel to the rotation axis of the air volume adjusting valve, and a guide member provided in the wind tunnel,
The tightening cam has a support and a valve contact portion, and the support and the valve contact portion are rotatably connected to each other by a predetermined angle. The guide member has an inclined surface for guiding the movement of the valve contact portion. And
The ventilator is characterized in that the support rotates by the operation of the operation unit, the valve contact portion contacts the air flow adjustment valve, and moves along the inclined surface of the guide member to rotate the air flow adjustment valve to the closed state. .

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