KR20070096923A - Ventilation apparatus - Google Patents

Abstract

A ventilation apparatus is provided to reduce loss and improve blow performance by allowing air passing through a suction port to be rectified by air current generated by impeller rotation, and to provide the low cost ventilation device with less breakdowns by including function of a rectifying plate in a rotation damper. A ventilation apparatus comprises a fan unit(3), an air suction port(4), a suction port formation unit(11) and a rotation damper(6). The fan unit has an impeller(2) driven rotationally. The air suction port is formed by opening a front surface along an axial direction of the impeller. The suction port formation unit covers a front surface of the air suction port, and forms the suction port(12) by opening a side direction along an outside corner of the air suction port. The rotation damper has shape corresponding to flow of air suctioned from the air suction port, and rotates around a rotation shaft(6a) corresponding to a shaft direction of the impeller so as to open and close the air suction port.

Description

Ventilation device {VENTILATION APPARATUS}

1 is a perspective view showing an example of the ventilation device of the present embodiment.

Fig. 2 is a side view showing an example of the ventilation device of the present embodiment.

3 is a configuration diagram showing an example of a rotary damper drive mechanism.

4 is an explanatory diagram showing an operation example of the ventilation device of the present embodiment.

5 is an explanatory diagram showing an operation example of the ventilation device of the present embodiment.

6 is a configuration diagram showing an example of a conventional ventilation device.

<Explanation of symbols for main parts of the drawings>

1A: Ventilation device

2: centrifugal impeller

3: centrifugal fan

4: intake vent

4a: Bell Mouse

5: Euro

6: rotary damper

6a: rotating shaft

7: main body

8: air flow forming tube

9: motor

10: exhaust port

11: suction port forming part

12: suction port

13: rotary damper drive mechanism

14: solenoid

15: lever

16: link mechanism

16a: load

16b, 16c: support point

[Document 1] Japanese Patent No. 2616612

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator installed in a house, an office, or the like, which inhales indoor air and discharges it to the outdoors, or inhales outdoor air and supplies air to the room to realize ventilation.

Background Art Ventilators have been proposed in the form of being installed in wall holes formed in wall portions of buildings such as houses. In such a ventilation device, the shutter which can open and close is provided in the front surface of the inlet port, such as a propeller fan, in order to prevent invasion of external air at the time of stopping ventilation operation (for example, refer patent document 1).

Moreover, as an example of a shutter, the ventilation apparatus which has the structure provided with the damper plate which opens and closes by a slide in the front surface of the main-body part in which the inlet port was formed is also proposed.

Fig. 6 is a configuration diagram showing an example of a conventional ventilation device having a damper plate opened and closed by a slide.

In the conventional ventilation apparatus 101, the motor 103 is fixed to the exterior of the main-body part 102, and the impeller 104, such as a propeller fan, is provided in the rotating shaft of the motor 103. As shown in FIG. The front face of the main body portion 102 is opened in a circular shape, and an inlet port 105 is formed.

In addition, a pair of damper plates 106 are slidably provided on the front surface of the main body portion 102. The opening and closing operation of the damper plate 106 is realized by the rack mechanism 107. By rotating the rack mechanism, the shutter is automatically opened at the time of ventilation, and the shutter is automatically closed at the time of stopping the ventilation, thereby realizing a ventilation device to prevent backflow.

On the front side of the main body part 102, the grill 108 which is a makeup frame is provided. Conventionally, although the suction port which formed the slit-shaped opening was formed in the front of the grill 108, the structure which provided the suction port in the side surface by closing the front of the grill 108 for the purpose of an improvement of an appearance, etc. Is also proposed.

However, in the conventional ventilation apparatus which is equipped with the damper plate which opens and closes by a slide as a shutter on the front surface of the main-body part in which the inlet was formed, the damper plate at the time of ventilation is opened by the thickness of a damper plate and a rack drive mechanism. When the lower surface of the body portion, a step is formed.

For this reason, when the airflow sucked from the intake port passes through the damper plate and the rack drive mechanism, there is a problem in that the airflow is separated by a step such as the damper plate, which leads to an increase in the loss and the eddy loss, resulting in a decrease in the blowing performance. .

Moreover, there existed a problem that the mechanism which opens and closes a damper board is complicated, it is easy to break, and manufacturing cost becomes expensive.

Moreover, like the patent document 1, in the structure provided with the shutter in the front surface of the inlet port, there existed a problem that it could not be set as the structure which intakes from the side surface of a grille.

This invention is made | formed in order to solve such a subject, and an object of this invention is to provide the ventilation apparatus which suppressed the loss.

In order to solve the above-mentioned problem, the ventilation apparatus of this invention covers the fan part which has an impeller rotationally driven, the inlet port formed by opening the front surface along the axial direction of an impeller, and the front surface of the inlet port, and the outer side of the inlet port. A suction inlet forming portion having a side opening along the edge to form an intake port, and a rotation damper having a shape along the flow of air sucked from the intake port and rotating the rotation axis along the axial direction of the impeller to a support point to open and close the intake port. It is characterized by.

In the ventilation device of the present invention, when the intake port is closed by the rotary damper, intrusion of outside air through the intake port is prevented.

When the rotary damper is opened, the inlet port is opened, and air is sucked in from the inlet port through the inlet port by the airflow generated by the rotation of the impeller. Since the rotary damper has a shape along the flow of air sucked from the inlet, the air passing through the inlet is rectified in accordance with the airflow generated by the rotation of the impeller, and the loss is reduced.

Furthermore, in the ventilation apparatus of this invention, it has a link mechanism which connects several rotation dampers, and is equipped with the rotation damper drive mechanism which opens and closes each rotation damper by interlocking, and is simple structure, opening and closing of several rotation dampers is interlocked. Is done.

In addition, the rotary damper drive mechanism includes a lever member for converting a linear motion into a rotary motion on the rotary shaft of one rotary damper, and includes an electric actuator for moving the lever member, thereby opening and closing the rotary damper and rotating the impeller. By interlocking, the function which automatically ventilates by opening a rotary damper at the time of operation, and closes a rotary damper automatically at the time of stop of operation, and realizes the function by the simple structure.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the ventilator of this invention is described with reference to drawings.

<Configuration example of the ventilation device of the present embodiment>

1 is a perspective view showing an example of the ventilation device 1A of the present embodiment, and FIG. 2 is a side view showing an example of the ventilation device 1A of the present embodiment.

The ventilation device 1A is provided in a wall hole 53 through which the indoor 52a and the outdoor 52b communicate with each other through the wall 51 in a building such as a house. The ventilator 1A includes a centrifugal fan 3 that pumps air by the centrifugal impeller 2 in order to suck air in the interior 52a and discharge it to the exterior 52b. In addition, the ventilation device 1A opens and closes the flow path 5 of the centrifugal fan 3 to the intake port 4, and at the same time, has a rotary damper having a function as a rectifying plate for rectifying the air sucked into the intake port 4 ( 6).

The centrifugal fan 3 is an example of a fan part which consists of a turbo fan, for example, The main body part 7 in which the front surface in the axial direction of the centrifugal impeller 2 was opened, and the circular inlet port 4 was formed, A cylindrical air passage forming cylinder portion 8 extending rearward from the inlet port 4 along the axial direction of the centrifugal impeller 2 on the rear surface of the main body portion 7 is provided.

As for the centrifugal fan 3, the motor 9 is provided in the rear end of the air passage forming cylinder part 8, and the centrifugal impeller 2 is provided in the rotating shaft of the motor 9. The inlet 4 is formed with a bell shaped mouth 4a of which the inner diameter gradually decreases, and the centrifugal impeller 2 is disposed in the air passage forming cylinder 8 inside the bell mouth 4a.

In addition, the air passage forming tube portion 8 opens the outer circumferential surface of the rear end side to form an exhaust port 10. As a result, in the centrifugal fan 3, the centrifugal impeller 2 is driven to rotate by the motor 9, whereby air is sucked in from the intake port 4, and the sucked air is discharged from the exhaust port 10.

The centrifugal fan 3 includes a suction port forming portion 11 on the front surface of the inlet port 4. In the inlet port forming portion 11, a circular plate-shaped member covering the inlet port 4 is attached to the main body portion 7 via the leg portion 11a having a predetermined length.

As a result, the centrifugal fan 3 has a predetermined interval with respect to the front face of the main body 7, and the front face of the inlet port 4 is closed by the inlet port forming part 11, and the inlet port forming part 11 is provided. A plurality of suction ports 12 are formed along the outer edges of the inlet port 4 on the side of the).

The rotary damper 6 has, for example, an arc shape along the outer edge of the inlet port 4, and a plurality of rotary dampers 6 supports the rotary shaft 6a along the axial direction of the centrifugal impeller 2 as a supporting point. It is rotatable and is mounted in each inlet 12.

In this example, two rotary dampers 6 having a 1/2 arc shape are provided corresponding to the two suction ports 12 formed in the half arc shape. Each rotary damper 6 has a rotary shaft 6a near the center of an arc shape, rotates each rotary damper 6 to a support point, and has a substantially cylindrical shape with two rotary dampers 6. By setting it in the direction in which this is formed, the inlet 12 is closed.

On the other hand, the suction port 12 is opened by rotating each rotation damper 6 to the support point, and making it into the direction which substantially S shape is formed by the two rotation dampers 6.

The rotary damper 6 is opened and closed by the rotary damper drive mechanism 13. 3 is a configuration diagram showing an example of the rotary damper drive mechanism 13, FIG. 3A is a plan view of the ventilation device 1A viewed from the front side, and FIG. 3B is a ventilation device 1A. It is the top view which looked at from the back side. Here, Fig. 3A shows a state in which the suction port forming portion 11 is removed.

The rotary damper drive mechanism 13 is provided on the solenoid 14 which generates the driving force which rotates a pair of rotary dampers 6, and the rotation shaft 6a of one rotary damper 6, and the solenoid 14 Which transfers the driving force of the solenoid 14 transmitted to the lever 15 to convert the linear motion of the rotary damper 6 into the rotational motion of the rotary damper 6 and the rotary damper 6 to the other rotary damper 6. A mechanism 16 is provided.

The solenoid 14 is an example of the electric actuator, and the presence or absence of energization is controlled in conjunction with the operation of an operation unit such as a switch (not shown) that operates the rotation and the stop of the rotation of the motor 9.

The lever 15 is an example of a lever member, and is configured to have a short length with respect to the length of the circular arc direction of the rotary damper 6, and from the linear motion of the short stroke, the angle necessary for the rotary damper 6 to open is rotated large. The exercise is configured to be obtained.

The link mechanism 16 connects one rotary damper 6 and the other rotary damper 6 with the rod 16a. Support point portion 16b to which one rotary damper 6 and rod 16a can rotate, and support point portion 16c to which the other rotary damper 6 and rod 16a can rotate. Are formed on the same side with respect to the rotating shaft 6a, respectively. As a result, when the driving force is transmitted from the one rotary damper 6 to the other rotary damper 6 by the link mechanism 16, the one rotary damper 6 and the other rotary damper 6 The rotary shaft 6a is rotated in the same direction with the supporting point.

Moreover, the rod 16a of the link mechanism 16 is bent in the shape along the shape of the clearance gap between the two rotation dampers 6 which open, and the rotation angle of the rotation damper 6 is made large.

In the ventilation apparatus 1A, the grill 21 which is a makeup frame is provided in the front side of the main-body part 7. The grille 21 is closed at the front, and the suction slit 21a is formed at the side.

<Operation example of the ventilation device of the present embodiment>

4 and 5 are explanatory diagrams showing an example of the operation of the ventilation device 1A according to the present embodiment. Next, the operation of the ventilation device 1A will be described with reference to the drawings. Here, Fig. 4A shows a state in which the suction port forming portion 11 is removed.

The solenoid which opens the rotary damper 6 at the time of non-operation of 1 A of ventilation apparatuses, ie, the state which stopped the rotation of the motor 9 which drives rotation of the centrifugal impeller 2 by operating a switch etc. which are not shown in figure. 14 is non-electrical.

If the solenoid 14 is non-energized, each of the rotary dampers 6 is interlocked by the link mechanism 16, and rotates the rotary shaft 6a to the supporting point by the pressing force of a spring (not shown), and FIG. As shown in the figure, the inlet 12 is closed in a direction in which a substantially cylindrical shape is formed by the two rotary dampers 6.

This prevents the air (outer air) of the outdoor 52b shown in FIG. 2 from entering the room 52a while the ventilation operation is stopped.

When the ventilation device 1A is operated, that is, a switch (not shown) is operated to rotate the motor 9 that drives the centrifugal impeller 2 to rotate, the solenoid 14 that opens the rotary damper 6 is opened. It is energized.

When the solenoid 14 is energized and the end of the lever 15 is pulled in the direction of arrow F1, one rotary damper 6 rotates the rotation shaft 6a in the direction of arrow C1 with a supporting point. When one rotary damper 6 rotates the rotation shaft 6a in the direction of arrow C1 around the supporting point, the driving force is transmitted from one rotary damper 6 to the other rotary damper 6 by the link mechanism 16. One rotary damper 6 and the other rotary damper 6 rotate the rotary shaft 6a in the same arrow C1 direction with the supporting point. The inlet 12 is opened in a direction in which an approximately S-shape is formed by the two rotary dampers 6.

As a result, the centrifugal impeller 2 is driven to rotate in the direction of an arrow C2 by the motor 9, whereby air is drawn from the inlet port 4 through the suction slit 21a and the suction port 12 on the side of the grill 21. The suctioned air is discharged from the exhaust port 10.

The airflow sucked from the suction port 12 which is a gap between the main body 7 and the suction port forming part 11 is rectified by flowing along the rotary damper 6 as indicated by arrow A, and the centrifugal impeller 2 rotates. The loss is reduced and the air blowing (ventilation) performance is improved because the flow is matched in the direction in which air in the inside of the air passage forming cylinder 8 generated by the flow flows.

As in the conventional ventilation apparatus described with reference to Fig. 6, when the damper plate is opened and closed by a slide on the front face of the main body portion where the suction port is formed, separation of air flow along the main body portion occurs due to the step by the damper plate, The phenomenon of friction and eddy loss occurs. On the other hand, in the ventilation apparatus 1A of this embodiment, since the structure which obstructs airflow does not need to be provided in the front surface of the main-body part 7 in which the inlet 4 was formed, friction and eddy loss generate | occur | produce. I never do that.

In addition, the rotation damper 6 has a configuration in which the lever 15 is provided on the rotation shaft 6a so as to be opened and closed in a rotational operation at a predetermined angle, so that the rotation damper 6 can be opened and closed by a short stroke linear movement. The rotary damper 6 can be interlocked by connecting with the link mechanism 16, and can realize the rotary damper drive mechanism by transmission with a simple structure.

In addition, since the front side of the grille 21 can be closed by the structure provided with the shutter by the rotary damper 6, an impeller etc. are not seen, an external appearance improves, fan leakage leaks, and noise Can be reduced.

<Modified example of the ventilation device of the present embodiment>

In the above-mentioned ventilation apparatus, although the rotation damper 6 was set as the structure which opens and closes with the drive force of an electric actuator, the structure which opens and closes the rotation damper 6 manually by connecting the member which can be operated manually with the lever 15 etc. It is also possible to.

The number of the rotary dampers 6 is not limited to two sheets, but may be a plurality of sheets of three or more sheets.

In addition, although the shape of the rotation damper 6 was made into circular arc shape, it is not limited to this, A flat shape, polygonal shape, etc. may be sufficient.

The present invention is applied to a ventilation device installed in a house or the like.

According to the ventilation device of the present invention, the air passing through the suction port is rectified in accordance with the airflow generated by the impeller rotating by the rotary damper for opening and closing the suction port, so that the loss is reduced and the blowing performance is improved.

In addition, by providing the rotary damper a function as a rectifying plate, the number of parts can be reduced, and the drive mechanism of the damper can be realized with a simple configuration, thereby providing a low-ventilation ventilation device. In addition, since the damper drive mechanism is easily motorized, it is possible to provide a ventilation device in which ventilation operation is linked with opening and closing of the rotary damper at low cost.

Claims (5)

A fan unit having a rotary impeller, An inlet formed by opening the front surface along the axial direction of the impeller; An inlet port forming portion covering the front surface of the inlet port and opening a side along an outer edge of the inlet port to form an inlet port; And a rotary damper having a shape in accordance with the flow of air sucked from the intake port, and rotating the rotation axis along the axial direction of the impeller to a support point to open and close the intake port. The ventilation apparatus of Claim 1 which has a link mechanism which connects a plurality of said rotation dampers, and the rotation damper drive mechanism which opens and closes each said rotation damper in an interlocking manner. The said rotary damper drive mechanism is provided with the lever member which converts a linear motion into rotary motion, The said rotary damper of one said rotary damper, An electric actuator for moving the lever member; Ventilation device, characterized in that for interlocking the opening and closing of the rotary damper and the rotation of the impeller. The said fan part is equipped with the centrifugal impeller as the said impeller, The ventilation apparatus of any one of Claims 1-3 characterized by the above-mentioned. The ventilation device according to any one of claims 1 to 4, wherein a front side of the intake port is closed on the front side of the main body portion, and a grill is formed on the side surface of the intake port.

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