JP2995657B1 - Ventilation equipment - Google Patents

Abstract

An object of the present invention is to provide a highly practical ventilation device capable of exhibiting good ventilation performance without a shield blocking the flow of air in an inner hole of a ventilation cylinder. SOLUTION: In a ventilator for communicating indoors and outdoors and discharging or ventilating indoor odors or hot air from a ventilation port 1 provided outdoors, a ventilation tube is provided at a communicating portion for communicating indoors and outdoors. 4, a shaft 18 is provided as close as possible to the inner wall of the ventilation tube 4, and a shield 3 for shielding the inner hole 2 of the communication tube 4 is provided on the shaft 18 slidably. Is attached to the inner wall when not shielded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator for exhausting or ventilating indoor odors or hot air from vents provided outdoors.

[0002]

2. Description of the Related Art A ventilator that discharges or ventilates indoor odors or hot air from vents provided outdoors is a communication device that connects indoors and outdoors in the event of a fire. In some cases, a fire damper device is provided to shield the passage and prevent the spread of fire.

[0003] By the way, as disclosed in Japanese Utility Model Application Laid-Open No. 2-128026, for example, a conventional fire damper device has a shaft installed in the center of a communication passage having a circular cross section, and two shafts are mounted on the shaft. A semi-circular shielding plate is provided, and the two shielding plates are provided in an abutting state (elastic pressure abutting due to striking) parallel to the air flow in the communication passage. Are connected by a thermal fuse (hereinafter referred to as a conventional example). Therefore, in this conventional example, in the event of a fire, the temperature fuse is cut off due to a rise in the temperature of the fire, and the two shield plates slide to form a disk shape due to the elastic pressure of the spring, thereby shielding the communication passage. It is.

However, in this conventional example, since the fire prevention damper device is located at the center of the communication passage, the shield obstructs a good flow of air, and the ventilation performance of the ventilation device is reduced. There is.

[0005] The present invention has been made in view of the above problems, and provides a highly practical ventilation device capable of exhibiting good ventilation performance.

[0006]

The gist of the present invention will be described with reference to the accompanying drawings.

[0007] In a ventilator for communicating indoors and outdoors and discharging or ventilating indoor odors or hot air from a ventilation port 1 provided outdoors, a ventilation tube 4 is provided at a communicating portion for communicating indoors and outdoors. The indoor side connecting portion 6 is provided on the indoor side of the ventilation tube 4, and the outdoor side connecting portion 7 is provided on the outdoor side, and the indoor side connecting portion 6 is provided as close as possible to the inner wall of the ventilation tube 4. axis
18 is provided, and when the fire occurs, the shaft 18
Setting the shield 3 freely擺動to shield the inner hole 2 of the vent tube 4 by a temperature rise of the vignetting, the shield 3 is Constantly ventilation
It is attached to the inner wall of the cylinder 4 with the elastic pressure applied to it,
The state where the shield 3 is attached to the inner wall of the ventilation cylinder 4 is maintained in the cylinder 4.
The support body 11 whose one end is pressed against the shield 3 to hold it
The other end of the support 11 is connected to the outer wall of the ventilation tube 4.
It is provided so as to protrude, and the support 11 is
An operation section 12 for operating the apparatus is provided.
In the inside, there is a shape description that shrinks due to a temperature rise above the predetermined temperature.
A coil spring 9 made of metal alloy is provided.
A protruding body 13 protruding from the outer wall of the ventilation tube 4 is provided in a row,
The operation unit 12 is always hooked on the protrusion 13
The support 11 attaches the shield 3 to the inner hole 2 of the ventilation tube 4.
In the event of a fire.
The coil spring 9 contracts, and the projecting body 13 sinks into
The lock with the operation unit 12 is released, the support 11 rotates, and the shield
3 is configured to slide and shield the inner hole 2 of the ventilation tube 4.
After the fire ends, the coil spring 9 extends to its original length.
And the projecting body 13 is configured to return and project as described above.
The ventilation tube 4 has an angle shape in cross section, and the indoor connection portion 6 and the outdoor connection portion 7 have a circular shape in cross section inscribed in the ventilation tube 4.
The ventilation device according to claim 1 , wherein the shield 3 in the attached state is provided at a position outside the ventilation section in the indoor-side connecting portion 6 and the outdoor-side connecting portion 7. It concerns the device.

[0008]

The shield 3 used as a fire damper, for example, is attached to the inner wall of the communication tube 4 when the shield 3 is not shielded (at all times). Without obstructing the flow of air in the inner hole 2 of the communication cylinder 4,
The ventilation performance of the ventilation device can be exhibited well.

Further , the projecting body 13 is pushed with a finger or the like to
Once immersed from the outer wall of the
Operate the shield 3 to the original attached state, and re-operate the operation unit 12.
Easy simply by engaging the projecting member 13 which has issued Do突 after fire finished
It can simply return to its original state.

[0010] A shield for operating the shield 3 at a predetermined temperature or higher
Did the mechanism use a coil spring 9 made of shape memory alloy?
Then, the operation unit 12 of the support 11 is rotated to protrude the operation unit 12
Repeatedly by a simple return work that locks to the body 13
Can be returned to the original state, and the temperature
Fuse has been blown and the thermal fuse must be replaced.
Unlike other mechanisms, return work is easy and inspection can be performed easily.
Will be.

The inner hole 2a of the indoor connecting portion 6 is also connected to the outdoor connecting portion.
7, the inner hole 2b is also circular in cross section, so that it is the same as the conventional example.
Pipes 5a and 5b and ventilation device 19
And whether the communicating portion 2c of the rectangular tube portion 8 has a rectangular shape in cross section.
The shield 3 is always as close to the inner wall of the ventilation tube 4 as possible.
So that the shield 3 does not hinder the flow of air.
In the event of a fire,
Thus, the inner hole 2 of the ventilation tube 4 can be reliably shielded.

[0012] Since the present invention is configured as described above, the shield can exhibit good ventilation performance without obstructing the flow of air, and in the event of a fire, the inner hole of the ventilation tube is reliably formed by the shield.
It becomes a ventilation device that is practical and operable that can be actually shielded .

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention and will be described below.

In this embodiment, a two-pipe exhaust pipe (two-pipe made of vinyl chloride) used in a bathroom or a toilet of an apartment house is used as a ventilation device for a part penetrating a fire wall. A ventilation tube 4 is provided at a communication portion that communicates indoors and outdoors, and the ventilation tube 4 is provided with a rectangular tube portion 8 having a rectangular tube shape. Further, the ventilation tube 4 has an exhaust pipe on the indoor side. 5a
The cylindrical indoor connecting portion 6 fitted to the (two pipes) and connecting the exhaust pipe 5a, and the exhaust pipe fitted to the outdoor exhaust pipe 5b (the two pipes). 5b is provided with a cylindrical outdoor side connecting portion 7, and the ventilation tube 4 is provided in the rectangular tube portion 8 so as to be as close as possible to the inner wall of the inner hole 2c communicating between the indoor and the outdoor. A shaft 18 is provided, and a shield 3 for shielding the inner hole 2c is provided on the shaft 18 so as to be freely slidable. The shield 3 is attached to the inner wall of the rectangular tube portion 8 when the shield 3 is not shielded. It is what was constituted.

A known ventilating device 19, such as Japanese Utility Model Laid-Open No. 7-41333, is connected to the outdoor exhaust pipe 5b. The ventilating device 19 can be directly connected to the outdoor connecting portion 7. It may be configured as follows. Incidentally, the ventilation opening 1 referred to in the claims is a portion that is open to the outside, and corresponds to, for example, an outdoor opening of the exhaust pipe 5b and an outdoor opening of the ventilation opening device 19.

The inner hole 2 of the communication tube 4 is
Is formed in a square shape in a sectional view, and the indoor side connecting portion 6
The inner hole 2a and the inner hole 2b of the outer connecting portion 7 are formed in a circular shape in a sectional view having a diameter equal to or smaller than the inner hole 2c of the rectangular tube portion 8. Further, the inner hole 2 is provided with an exhaust pipe 5a
A partition 10 is provided so that the inner hole 2 is constituted by two inner holes 2 on the left and right when the 5b is connected (the inner holes 2a and 2b having a circular shape in a sectional view necessarily have a semicircular shape). ), The shields 3 are provided one by one in each of the two inner holes 2 on the left and right.

The shield 3 is provided on a shaft 18 on the upper inner wall of the inner hole 2c of the rectangular tube portion 8, and is always attached to the upper inner wall. In this attached state, the shielding body 3 has the inner hole 2 a of the indoor side connecting portion 6 because of the shape of the inner hole 2 of the square tube portion 8.
In addition, it is disposed at a position where the flow of air such as odor or hot air passing through the inner hole 2b of the outdoor-side connecting portion 7 is not obstructed.

A shaft 14 of the shield 3 is provided with a sprout 14, and the shield 3 is caused to slide downward by the sprout 14 (that is, the shield 3 is attached to the inner hole of the communication cylinder 4). 2 is applied (in a direction that shields 2) (a state in which elastic pressure is applied).

Further, the shielding body 3 is provided with a shielding mechanism for shielding the inner hole 2 of the communication cylinder 4 when the temperature rises to a predetermined temperature (for example, 70 ° C.) or more in the event of a fire.

The structure of the shielding mechanism will be described in detail.

Reference numeral 11 denotes an L-shaped support which presses and abuts the shield 3 so as to keep the shield 3 attached to the inner wall of the ventilation tube 4 (the inner wall of the square tube portion). The support 11 is not connected to the shield 3. Further, the support 11 is provided so that one end thereof protrudes from the outer wall portion of the ventilation tube 4, and an operation section 12 for operating the support 11 is provided on this protruding portion, while the other end of the support 11 is a shield. 3 is configured to be pressed. The support 11 has a direction in which the other end of the support 11 always slides downward due to the sliding load acting on the shield 3 (that is, the shield 3 shields the inner hole 2 of the ventilation tube 4). Direction).

Further, a coil spring 9 made of a shape memory alloy is provided in the inner hole 2 of the ventilation tube 4 so as to shrink when the temperature rises to a predetermined temperature or higher. The coil spring 9 protrudes from the outer wall of the ventilation tube 4. A protrusion 13 is provided in series, and the protrusion 13
13 is configured to protrude and retract from the outer wall of the ventilation tube 4 (or the amount of protrusion increases and decreases) by expansion and contraction of the coil spring 9.

The inner hole 2 of the ventilation cylinder 4 is provided with a locking rib 15 which overlaps with the shield 3 in a state where the inner hole 2 is shielded and serves as a sliding position of the shield 3.

The operation of the shielding mechanism will be described in detail.

Normally, a projecting body connected to the coil spring 9
13 protrudes from the outer wall of the ventilation tube 4 and
An operating portion 12 provided on the support 11 is locked in a hooked state, and the support 11 supports the shield 3 so as to be attached to the inner hole 2 of the ventilation tube 4.

When a fire occurs, the coil spring 9 contracts at a predetermined temperature or higher, and the protrusion 13 enters from the outer wall of the ventilation tube 4.
The engagement between the projecting portion 13 and the operating portion 12 is released, and the support 11 rotates by the action of the sliding load, and the shield 3 supported by the support 11 slides and the ventilation tube 4 is closed. The inner hole 2 is shielded.

After the end of the fire, when the temperature falls below a predetermined temperature, the coil spring 9 extends to its original length, and the projection 13 projects from the outer wall of the ventilation tube 4. In this state, the protruding portion 13 is pushed with a finger or the like so as to enter one end from the outer wall of the ventilation tube 4, and the operation portion 12 of the support 11 is rotated (that is, the support 11 is rotated, and the shield 3 is also rotated). It will be moved back to the original attached state position),
When the operating portion 12 is locked to the projecting portion 13 projecting again from the outer wall portion of the ventilation tube 4, the shielding mechanism is returned to the state before the fire.

On the other hand, on the upper outer wall of the ventilation tube 4, a plate-shaped hanging portion 16 for hanging and connecting the ventilation tube 4 to a ceiling portion of a building (such as an eaves or a ceiling plate) with bolts or screws is provided. It is provided so as to protrude in the horizontal direction.

Reference numeral 17 in the figure denotes an opening / closing unit that opens and closes to inspect the inside of the inner hole 2.

Since the present embodiment is constructed as described above, the shield 3 serving as a fire damper device is always disposed at a position where the flow of air such as odor or hot air is not hindered. The pressure loss of the flow is less than half that of the conventional example, and the ventilation device is excellent in practicability, whereby the ventilation performance is sufficiently exhibited.

Further, since the coil spring 9 made of a shape memory alloy is used for the shielding mechanism for operating the shielding body 3 at a predetermined temperature or higher, the original state can be repeatedly returned by the simple return operation as described above. Unlike the conventional example, where the thermal fuse is cut and the thermal fuse must be replaced, the ventilator is more practical and easy to return to and easy to check. Become.

Further, since the shield 3 and the support 11 for holding the attached state of the shield 3 are not connected to each other, a structure in which the shield 3 is pressed and abutted is adopted. However, it is possible to return to the original state, and the thermal fuse attached to the shield 3 (which also has the function of the support 11 of the present embodiment) as in the conventional example is cut off and the thermal fuse must be replaced. Unlike the mechanism that must not
The ventilator will be much more practical, as it will be easier to return and easier to inspect.

Since both the inner hole 2a of the indoor side connecting portion 6 and the inner hole 2b of the outdoor side connecting portion 7 are circular in cross section, the exhaust pipes 5a and 5b (the two pipe pipes) as in the conventional example. And the ventilating device 19 can be connected, and the communicating portion 2c of the rectangular tube portion 8 has a rectangular shape in cross section.
The shield 3 can be set to a position that does not hinder the flow of air by being attached to the inner wall as close as possible, and the inner hole 2 of the ventilation tube 4 can be reliably shielded by the shield 3 in the event of a fire. Become a more practical ventilation equipment.

[Brief description of the drawings]

FIG. 1 is an explanatory exploded perspective view of the present embodiment.

FIG. 2 is an explanatory side sectional view of the present embodiment.

FIG. 3 is an explanatory longitudinal sectional view of the outdoor-side connecting portion 6 side of the present embodiment.

FIG. 4 is an explanatory plan sectional view of the present embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ventilation opening 2 Inner hole 3 Shield 4 Ventilation tube 6 Indoor side connection part 7 Outdoor side connection part 9 Coil spring 11 Support body 12 Operation part 13 Projecting body 18 Axis

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24F 13/14

Claims (2)

(57) [Claims] 1. A ventilator for communicating indoors and outdoors and discharging or ventilating indoor odors or hot air from vents provided outdoors, wherein a vent tube is provided at a communicating portion for communicating indoors and outdoors. Provided on the indoor side of the ventilation tube is an indoor connection portion, and on the outdoor side, an outdoor connection portion is provided, and a shaft is provided as close as possible to the inner wall of the ventilation tube,
This axis is used to raise the temperature to a specified temperature or more in the event of a fire.
Therefore set shields freely擺動to shield the inner hole of the vent tube
This shield is normally pressed against the inner wall of the ventilation tube
To the inner wall of the ventilation tube.
One end is pressed against the shield to maintain the attached state of the shield.
A support to be pressed against is provided, and the other end of the support is
The projection is provided so as to protrude from the outer wall of the cylinder.
The operating part for operating the support is provided separately, while the ventilation cylinder
Shrinks due to temperature rise above the predetermined temperature
A coil spring made of a shape memory alloy is provided.
A projection is provided on the outer wall of the ventilation tube,
At this time, the operating part is locked in a hooked state on the protrusion,
The support will attach the shield to the inner hole of the ventilation tube.
When a fire occurs, the coil spring contracts.
The protrusion is immersed and the lock between the protrusion and the operation unit is released.
The support rotates and the shield slides to open the inner hole of the ventilation tube.
It is configured to shield and, after the fire ends, the coil
The spring extends to its original length and the protrusion returns to its original position as described above.
The ventilation device is characterized in that the ventilation tube has an angle shape in cross section, and the indoor connection portion and the outdoor connection portion have a circular shape in cross section inscribed in the ventilation tube. 2. The ventilation device according to claim 1 , wherein the shield in the attached state is provided at a position outside the ventilation cross section in the indoor side connection part and the outdoor side connection part. apparatus.