JPH11294826A - Ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a ventilator which is designed to save energy. SOLUTION: A ventilator comprises a ventilating frame 13 having a suction opening at one side and an exhaust opening at the other side, a blower 20 provided to the ventilating frame 13, a controller 19 for rotational control of the blower 20, a natural ventilation mode N for conducting natural ventilation from the suction opening to the exhaust opening without rotating the blower, a forced ventilation mode R for forcedly sucking air from the suction opening to discharge it from the exhaust opening by rotating the blower 20, and a selection control device 19 for selecting and controlling either one of the natural ventilation mode N and the forced ventilation mode R.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device, and more particularly to a ventilation device capable of performing natural ventilation.

[0002]

2. Description of the Related Art Generally, a ventilation device is mounted on a wall of a room, a kitchen, a bathtub, or the like, and a fan is operated to provide ventilation when needed. However, in such a ventilation device, the blower must be operated each time ventilation is performed, and the operation is very troublesome.

[0003] Instead of this ventilator, a device that always operates a blower and constantly ventilates has been adopted. This ventilator can reduce the trouble of the operation, but has a problem that energy cannot be saved because the blower operates constantly.

[0004] In order to save energy in the ventilating apparatus, a ventilating apparatus has been used which detects a ventilation air volume by a differential pressure detecting means and controls a blower according to the ventilation air volume.

However, there is a problem that even with such a ventilation device, the operation of the blower is not reduced and energy saving cannot be achieved as expected.

For this reason, a ventilator which performs forced ventilation for operating the blower and natural ventilation for not operating the blower is conceivable.

[0007] However, in this ventilation, even if the ventilation device is mounted sideways on a wall or the like, or even if it is mounted on the ceiling, depending on the inclination of the exhaust duct, the ventilation resistance increases and natural ventilation cannot be performed sufficiently. There was a problem to say.

Accordingly, an object of the present invention is to provide a ventilator which can use natural ventilation as much as possible.

[0009]

According to the first aspect of the present invention, a ventilation frame having an intake opening on one side and an exhaust opening on the other side, a blower provided in the ventilation frame, and rotation control of the blower. A control device, a natural ventilation mode for performing natural ventilation from the intake opening to the exhaust opening without rotating the blower,
A selection control device that has a forced ventilation mode in which the blower is rotated to forcibly suck air from an intake opening and discharge from an exhaust opening, and selectively controls one of the natural ventilation mode and the forced ventilation mode. The present invention provides a ventilator characterized by comprising:

According to a second aspect of the present invention, there is provided a ventilation frame having an intake opening on a lower surface and an exhaust opening on an upper surface, a blower provided in the ventilation frame, and a fan provided in the ventilation frame. And a control device for controlling the blower and the damper device, the ventilation device being provided upstream of the blower.

According to a third aspect of the present invention, an air flow detecting means for detecting an air flow exhausted from an exhaust opening is provided in the ventilation frame, and the control device controls the opening degree of the damper device based on the air flow detected by the air flow detecting device. It is intended to provide a ventilation device characterized by controlling the rotation of the blower.

The control device according to a fourth aspect of the present invention rotates the blower when the air volume detected by the air volume detection unit is smaller than the first set value, and the air volume detected by the air volume detection unit is larger than the first set value. When the value is smaller than the set value, the rotation of the blower is stopped, and the damper device is opened to a substantially full open state. When the value is larger than the second set value, the rotation of the blower is stopped and the opening and closing of the damper device is controlled. It is intended to provide a ventilation device characterized by the following.

According to a fifth aspect of the present invention, there is provided a first ventilation mode in which a normal ventilation air volume is supplied, a second ventilation mode in which a ventilation air volume different from the first ventilation mode is supplied, and the first ventilation mode or the first ventilation mode. And a selection control device for selecting and controlling one of the two ventilation modes.

According to a sixth aspect of the present invention, when the air flow detected by the air flow detecting means is equal to or more than the second set value, the opening of the damper device is selectively controlled in accordance with the detected air flow detected by the air flow detecting means. It is intended to provide a ventilator characterized in that:

When the air volume detected by the air volume detecting means is equal to or more than the second set value, the control device of the present invention closes the damper of the damper device at a predetermined angle, detects the air volume, and sets the air volume to the second set value. It is an object of the present invention to provide a ventilator characterized in that the damper of the damper device is further closed until the value becomes equal to or less than the value.

According to another aspect of the present invention, when the air volume detected by the air volume detection means is equal to or less than the first set value, the rotation of the blower is increased or decreased in accordance with the air volume detected by the air volume detection means. It is intended to provide a ventilation device characterized by the following.

The ventilating frame according to the ninth aspect of the present invention is provided with a ventilating apparatus characterized in that two independent passages connected to the exhaust opening are provided side by side and a blower is provided in one passage. It is.

A sirocco fan is provided in the blower casing of the blower according to the tenth aspect of the present invention, and the sirocco fan is mounted on the blower casing so as to be axially horizontal, and an exhaust opening is provided above the blower casing. The present invention provides a ventilating device that performs the following.

According to the eleventh aspect of the present invention, there is provided a ventilating apparatus characterized in that a sub-exhaust opening extending to an exhaust opening is provided in the blower casing.

A first passage having no blower is provided on the downstream side of the damper device according to the twelfth aspect of the present invention, and a second passage having a blower mounted inside the first passage is provided. It is an object of the present invention to provide a ventilator characterized in that the ventilator is biased to the opposite side to the damper device.

According to a thirteenth aspect of the present invention, there is provided a ventilating apparatus characterized in that a plurality of intake openings are provided on a side portion of the ventilation frame on the upstream side of the damper apparatus.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a ventilating apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the ventilation device 10 of the present invention is disposed behind a ceiling 12 of a building 11 and has a plurality of rooms A, B,
Air such as C, D, E, etc. is taken in, exhausted outside the room, and ventilated.

As shown in detail in FIG. 2, the ventilating apparatus 10 is provided with a vertically extending ventilation frame 13 having a substantially rectangular cross section, and a main intake opening 14 having an intake opening at a lower portion thereof.
a is provided and an exhaust opening 14b having an exhaust opening is provided at the upper part, and the ventilation frame 13 is set up and down to reduce ventilation resistance.

On the lower side wall of the ventilation frame 13, there are provided sub-intake openings 14c, 14d having intake openings via connecting cylinders 15a, 15b and intake ducts 16a, 16b. C, D, E... Can be sucked in air.

At the middle of the ventilation frame 13, a partition plate 17 having a rectangular or circular opening 17a on one side and a closing part 17b closed on the other side is attached, and a ventilation passage is formed by a rectangular or circular opening. Narrow ventilation flows at high speed.

A damper device 18 is mounted above the opening 17a of the partition plate 17, and a damper device 18 is provided.
A control device 19 and a blower 20 are attached to the closed portion 17b on the side of the ventilator to reduce the cross-sectional area of the ventilation frame 13, that is, the size of the partition plate 17, so that the ventilation device 10 can be downsized.

The control device 19 is provided below the blower 20 so as to make it difficult for the operating noise of the blower 20 to be transmitted to the lower room when it is transmitted to the lower room A or the like.

The main intake opening 14a of the ventilation frame 13
The auxiliary ventilation openings 14c and 14d, the lower ventilation frame, the damper device 18, the blower casing 20a of the blower 20, the upper ventilation frame, the exhaust opening 14b, and the like force the ventilation flow to be forced by the rotation of the blower 20. Are formed, and the air in the chambers A, B... Is forcedly ventilated by rotating the blower 20.

The first passage R of the ventilation frame 13 and the main intake opening 14a and the auxiliary intake opening 14c surrounding the first passage R are provided.
, 14 d, the lower ventilation frame, the damper device 18, the exhaust opening 14 b, etc., to reduce the ventilation resistance as much as possible and to allow the ventilation flow to flow naturally only by the buoyancy of the air without depending on the rotation of the blower 20. Are formed, and the air in the chambers A, B... Is naturally ventilated.

The first passage R in the forced ventilation mode is disposed in the second passage N in the natural ventilation mode, and the natural ventilation flow resistance flowing through the second passage N in the natural ventilation mode via the damper device 18. Are minimized and the center of each passage is offset.

The main intake opening 14a and the sub intake opening 14c
, 14d are provided with a cover 21 having an intake opening so that air from the chambers A, B, D, E...

An exhaust duct 22 and an exhaust tower 24 are attached to the exhaust opening 14b, and the air taken in by the main intake opening 14a and the like is exhausted to the outside of the room.

A damper 18a which is rotated within a range of about 90 ° by a small electric motor is provided in a substantially square damper frame of the damper device 18, and the damper 18a is continuously and stepwise controlled by a control output of a control device 19. Close control or open control is performed.

The upper end of the damper frame of the damper device 18 is located below the suction port of the blower 20. When the ventilation air volume Q is small, the damper 18a is leveled in the ventilation flow direction (vertically). . Further, the forced ventilation flow may be surely guided to the blower casing 20a of the blower 20 by, for example, directing the damper 18a toward the suction port.

As shown in FIG. 4, the control device 19 includes sensors 19aa, 19ab, CP which are air flow detecting means such as a differential pressure sensor.
U, operation control processing section 19b such as timer, output terminal section 19
c, 19d, etc.

One sensor 19aa of the control device 19 is mounted so as to penetrate the closing portion 17b of the partition plate 17, and the other sensor 19ab is mounted so as to protrude into the lower damper frame of the damper device 18, and the sensor 19aa is mounted. And sensor 1
The ventilation air flow Q flowing from the intake opening to the exhaust opening is detected from the pressure difference from the pressure difference 9ab, and the damper device 18 and the blower 20 are selected and controlled based on the ventilation air flow Q.

As the air flow sensor 19, various sensors such as a hot wire air flow meter can be used in addition to the differential pressure sensor.

The blower 20 includes a support 20b and a motor 20c.
, A sirocco fan 20d, a blower casing 20a, and the like.
0c, that is, on / off control of the rotation of the sirocco fan 20d.

An auxiliary tapered auxiliary exhaust opening 26 extending close to the exhaust opening 14b is attached to the blower casing 20a of the blower 20, and the blower 20 in the first passage R is provided.
When forced ventilation is performed by rotation of, the forced ventilation flow is prevented from flowing back to the second passage N, which is a natural ventilation flow path, as much as possible.

Further, the rotating shaft of the sirocco fan 20d is mounted in the first passage R horizontally so as to make the forced ventilation flow strong.

The ventilating function for forcibly ventilating the ventilation device 10 thus constructed and performing natural ventilation will be described with reference to the experimental data of FIG. 5 and the flowcharts of FIGS.

.. Are heated to about 20 ° C., and the outside air is at a temperature of about 5 ° C.

In this heating state, the air density in the chambers A, B... Becomes lighter than the outside air density, and buoyancy is generated from the lower part to the upper part as shown by arrows. Due to this buoyancy, the atmosphere flows into the interior of the building 11 from the air inlets 11a, 11b, 11c, 11d..., And the internal air pressure of the chambers A, B. The air flows naturally to the outside via the damper device 18, the second passage N which is a natural ventilation passage, the first passage R which is a forced ventilation passage, the exhaust duct 22, and the exhaust tower 24. The ventilation flow rate Q is detected by the sensors 19aa and 19ab of the control device 19.

The ventilation flow rate Q depends on the size of the room A, etc., but it is considered that the ventilation is insufficient when the building is less than 100 m3 / h in an ordinary building. It is said that if it exceeds 180m3 / h, it is slightly too much.

Based on such basic data, the damper device 1
8 was fully opened, and the relationship between the ventilation air volume Q and the opening of the damper 18a was experimentally examined. FIG. 5 shows the result. According to this, in the normal control, the opening of the damper 18a is set to 90 ° (fully open) when there is a ventilation flow rate Q of 0 to 180 m3 / h. Further, when the ventilation flow rate Q of 181 to 225 m3 / h flows, if the opening degree of the damper 18a is set to 60 °, it becomes 100 to 225 m3 / h.
180m3 / h.

Similarly, as the ventilation flow rate Q increases, the opening degree of the damper 18a is successively reduced to reduce the ventilation air volume Q by one.
100 to 180 m3 / h.

When the ventilation air flow Q becomes 450 m3 / h or more, the ventilation flow Q in the room and outdoors becomes too high, causing an abnormal condition. Therefore, the damper 18a is closed and the ventilation action is stopped.

When the user wants to increase the ventilation air volume Q, or when ventilating a place such as a cafeteria where the humidity and odor are high, the first ventilation is performed by the changeover switch so that the ventilation is strengthened. The mode (normal control) can be switched to the second ventilation mode.

In the second ventilation mode, the ventilation air volume Q is 180 m3
/ H is less than 180 m3 / h and less than 2
If it is less than 60m3 / h, proper ventilation is provided, and if it is 260m3 / h or more, it is too much. The results of this experiment are also shown at the bottom of FIG. 5 as strong control.

From these data, the ventilation air volume Q and the damper 1
The relationship between 8a and the required opening / closing angle is obtained, the selection control output of the control device 19 is determined, and the selection control of the damper device 18 and the like is performed.

Based on such ventilation characteristics, a case where the ventilation air volume Q is, for example, 100 m 3 / h is set as the first set value, and 181
m3 / h is set as the second set value, and the first set value of 10
0m3 / h or less is defined as insufficient ventilation, between 100m3 / h and 180m3 / h or less between the first set value and the second set value is appropriate ventilation, and ventilation with the second set value of 180m3 or more is defined as excessive ventilation. A case in which the device 18 and the blower 20 are specifically selected and controlled will be described.

When the sensors 19aa and 19ab have ventilation airflow Q of 10
When the detected air flow is between 0 m3 / h and 180 m3 / h, it is an appropriate ventilation air volume Q, and as shown in FIG.
8. No control is performed on the blower 20 (S1).

This is because the damper 18a is opened with an appropriate opening (substantially fully open), and the ventilation flow takes in the ventilation air from the intake opening 14a, and the second passage N and the first passage R,
This is because the ventilation is performed in the natural ventilation mode through the exhaust duct 22 and the exhaust tower 24, and the air is released to the outside.

Therefore, power consumption due to the ventilation is not required, energy is saved, and since the blower 20 is not operating, there is no operation noise, so that ventilation can be performed with low noise.

The sensors 19aa and 19ab are 100 m3 /
When the ventilation air volume Q equal to or less than h is detected, this is insufficient ventilation. As shown in FIG. 6, the control device 19 needs to rotate the blower 20 by selectively controlling the forced ventilation mode to perform forced ventilation in the room A or the like. is there.

In this state, the sirocco fan 20c
Is operated for about one hour and then is stopped (S2), (S3), (S4).

Due to this forced ventilation, a ventilation flow is generated by the main intake openings 14a, the sub intake openings 14c, 14d, the lower ventilation frame,
The ventilation of the damper device 18, the blower 20, the auxiliary exhaust opening 26, the upper ventilation frame, the exhaust opening 14b, etc. is performed in the forced ventilation mode, and the exhaust duct 22 and the exhaust tower 2 pass through the first passage R.
Pass through 4 to the outside to perform forced ventilation.

In such a ventilation operation, when the ventilation air volume Q is 100
Perform the ventilation until the proper ventilation of m3 / h or more and 180 m3 / h or less. This ventilation causes operation noise of the blower 20, but this noise is less likely to be transmitted to the room A and the like by the control device 19 disposed below the electric motor 20, so that the user does not feel uncomfortable. However, this forced ventilation consumes power because the motor 20c is operated.

The blower 20 is rotated at the normal speed, but when the insufficient ventilation air volume Q is 50 m3 or less under the control of the controller 19, the high-speed rotation allows the ventilation air volume Q to be increased to 100 m3 / h or more and 180 m3 / h or more. It may be controlled so as to be less than 80 m3, and in the case of 80 m3 or more, the ventilation air volume Q is slowly controlled to be 100 m3 / h or more and 180 m3 / h or less by low-speed rotation.

Further, the sensors 19aa and 19ab are 180 m3
/ H is detected, the control device 19 stops the rotation of the electric motor 20 by selectively controlling the natural ventilation mode, and controls the closing of the damper 18a of the damper device 18 by the selection control of the control device 19. It is necessary to control the ventilation air volume Q (S5), (S6).

The closing control of the damper 18a is performed based on the above experimental data, if the ventilation air flow Q is 181 m3 / h or more and 225 m3 / h or less, the damper 18a is turned to 60 °, and the ventilation air flow Q becomes 22
If it is 6 m3 / h or more and 300 m3 / h or less, the damper 18a is selectively controlled to 45 ° or the like, closed and maintained for about one hour, and then fully opened to detect the ventilation air flow Q until the proper ventilation air flow Q is reached. Repeat (S5), (S6), (S
7), (S8).

If a proper value is obtained, the damper 18a is kept fully open. However, after that, even if the damper 18a is fully opened, if the ventilation air volume Q is too short, forced ventilation is performed and the rotation of the fan 20c is controlled to correct it (S5), (S5).
2), (S3), (S4). In this way, an appropriate ventilation air volume Q can be obtained.

In the above forced ventilation, the damper 18a
Blower 20 with an appropriate angle such as ゜, 45 ゜, 30 ゜
And the ventilation flow may be properly guided.

In order to prevent the damper 18a from excessively rotating clockwise in the reverse direction and hinder the detection of the sensor 19ab, a stopper 18c made of a rib is provided in the damper frame substantially all around.
Excessive rotation of the damper 18a is restricted.

The control of the damper 18a is a selection control for selecting an optimum one. However, as shown in FIG. 7, it can be also performed by a feedback control for sequentially performing a close control and a successive open control as shown in FIG.

In this control, the sensors 19aa and 19ab
When the ventilation air volume Q of m3 / h or more is detected, the damper 18a
Is first closed at 60 °, and the ventilation air volume Q is still 180 °
When m3 / h or more is detected, the damper 18a is closed at 45 °,
Further, detection, judgment, and closing control are performed until the ventilation air volume Q reaches an appropriate value by closing to 30 ° (S5), (S17).
When the proper ventilation air volume Q is reached by this control, the damper 18
Stop the rotation control of a.

However, when the closing control becomes large,
When the insufficient ventilation air volume Q of less than m3 / h is reached, on the contrary, the damper 18a is moved from the 30 degree opening to the 45 degree opening, and
The opening of the damper 18a is controlled to an opening of 60 ° from the opening (S5), (S9), (S18). By such control, it is possible to prevent over-closing and perform proper ventilation.

Regardless of whether the opening degree of the damper 18a is 90 ° (fully open), if the ventilation air flow Q becomes less than 100 m3 / h and it is insufficient, the ventilation air flow is increased by rotating the fan 20c to perform forced ventilation (S9). (S2), (S
3), (S4). In this way, an appropriate ventilation air volume Q can be obtained.

The atmosphere sometimes accompanies strong winds, and may flow backward from the exhaust tower 24 to the rooms A and B via the exhaust duct 22 and the ventilator 10.

In this state, the sensor 1 having a cutout at the top is
By using 9ab, this can be appropriately detected as a dynamic pressure. As shown in FIG. 8, the detected value is captured as an electric signal v by the controller 19, and
If <O, the ventilation air volume Q is determined to be 0 m3 / h or less (backwind), and the blower 20 is forcibly ventilated to prevent this (S22), (S23), and (S24). Since this control method is the same as the forced ventilation control of the fan 20c, a detailed description is omitted.

In this ventilation control, the electric signal is 0 ≦ v <0.
If the airflow rate is 05, it is assumed that the ventilation air volume Q is insufficient ventilation of 100 m3 / h or less, and the blower 20 can be forcedly operated to eliminate the insufficient ventilation (S25), (S22).
(S23), (S24), and the electric signal is 0.05 <
If it is v, the control device selects the natural ventilation mode assuming that the ventilation air volume is 100 m3 / h or more, and does not rotate the blower 20 (S26), (S27).

As described above, the building 11 can be ventilated in the forced ventilation mode by the selection control of the damper device 18 and the blower 20 by the control device 19, or the natural ventilation mode in which as much natural ventilation as possible can be adopted. As a result, the energy saving of the ventilation device 10 can be strongly promoted by water.

Further, by using the natural ventilation mode, the operation of the blower 20 is reduced, and the noise can be reduced.

In each of the above embodiments, the first set value is set to 100 m3 / h and the second set value is set to 180 m3 / h. However, the first set value is set to 180 m3 / h according to the user's request.
/ H and the second set value can be freely set to 260 m3 / h or the like.

Although the ventilation mode is set to the mode based on the normal control as the first ventilation mode and the mode based on the strong control as the second ventilation mode, the first and second ventilation modes are weaker than the mode based on the normal control. It is also possible to freely set the mode to a mode or a mode stronger than the mode by the strong control.

[0077]

According to a first aspect of the present invention, there is provided a ventilation frame having an intake opening on one side and an exhaust opening on the other side, a blower provided in the ventilation frame, a control device for controlling the rotation of the blower, A natural ventilation mode in which natural ventilation is performed from the intake opening to the exhaust opening without rotating the blower, and a forced ventilation mode in which the blower is rotated to forcibly suck air from the intake opening and discharge from the exhaust opening, Since a selection control device for selectively controlling one of the natural ventilation mode and the forced ventilation mode is provided, the ventilation can use both the forced ventilation and the natural ventilation, thereby saving energy and obtaining a low-noise ventilation device.

According to the second aspect of the present invention, since the ventilation frame provided at the back of the ceiling has an intake opening on the lower surface and an exhaust opening on the upper surface, the air rising by buoyancy has a small resistance while the resistance is small. As it passes through the body, more natural ventilation can be obtained, and the electricity bill can be reduced because the blower does not rotate.

According to a third aspect of the present invention, an air flow detecting means for detecting an air flow exhausted from an exhaust opening is provided in the ventilation frame, and the control device controls the opening degree of the damper device based on the air flow detected by the air flow detecting device. Since the rotation of the blower is controlled, the ventilation can be performed by appropriately selecting the forced ventilation mode or the natural ventilation mode according to the ventilation air volume.

The control device according to a fourth aspect of the present invention rotates the blower when the air volume detected by the air volume detection means is smaller than the first set value, and the air volume detected by the air volume detection means is larger than the first set value. When the value is smaller than the set value, the rotation of the blower is stopped, and the damper device is opened to a fully open state. When the value is larger than the second set value, the rotation of the blower is stopped and the opening and closing of the damper device is controlled. Thus, it is possible to appropriately select the ventilation control according to the user's request.

The fifth aspect of the present invention provides a first ventilation mode in which a normal ventilation flow rate is supplied, a second ventilation mode in which a ventilation flow rate different from the first ventilation mode is supplied, and the first ventilation mode or the second ventilation mode. Since a selection control device for selectively controlling one of the two ventilation modes is provided, ventilation control can be performed in various ventilation modes.

According to a sixth aspect of the present invention, when the air flow detected by the air flow detecting means is equal to or more than the second set value, the opening of the damper device is selectively controlled in accordance with the detected air flow detected by the air flow detecting means. Therefore, the air volume can be appropriately adjusted according to the ventilation air volume.

When the air volume detected by the air volume detecting means is equal to or greater than the second set value, the damper of the damper device is closed at a predetermined angle, the air volume is detected, and the air volume is set to the second set value. Since the damper of the damper device is further closed repeatedly until the value becomes equal to or less than the value, the user can smoothly secure a desired ventilation air volume.

In the control device according to the present invention, when the air volume detected by the air volume detection means is equal to or less than the first set value, the rotation of the blower is increased or decreased in accordance with the air volume detected by the air volume detection means. Underventilation can be changed to proper ventilation.

In the ventilation frame according to the ninth aspect of the present invention, two independent passages connected to the exhaust opening are provided side by side, and a blower is provided in one passage, so that the ventilation flow can be properly controlled by forced ventilation or natural ventilation. In natural ventilation, the resistance of the flow of the wind is small, so that the volume of naturally ventilated air increases.

A sirocco fan is provided in the blower casing of the blower according to the tenth aspect of the present invention, and the sirocco fan is mounted on the blower casing in a horizontal axis and an exhaust opening is provided on the upper side of the blower casing, so that forced ventilation flow is provided. Even when the fan is stopped, the ventilation resistance of the natural ventilation flow in the ventilation casing becomes small, and the natural ventilation air volume increases even when the rotation of the fan is stopped.

In the blower casing according to the eleventh aspect of the present invention, the auxiliary exhaust opening extending from the exhaust opening is provided, so that when the forced ventilation is performed by the rotation of the blower, the backflow of the forced ventilation flow to the natural ventilation path is prevented as much as possible.

A first passage having no blower is provided downstream of the damper device according to the twelfth aspect of the present invention. A second passage having a blower mounted inside the first passage is provided. Since it is biased to the opposite side to the damper device, the ventilation resistance during natural ventilation can be reduced, natural ventilation can be enhanced, and energy saving can be achieved.

Since a plurality of intake openings are provided on the side of the ventilation frame on the upstream side of the damper device according to the thirteenth aspect of the present invention, ventilation at a large number of locations can be performed both by natural ventilation and forced ventilation.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an outline of a building provided with a ventilation device of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the ventilation device of the present invention.

FIG. 3 is a cross-sectional view of FIG. 2 cut along the line 3-3 and viewed in the direction of the arrow.

FIG. 4 is a block diagram showing a main part of the control device.

FIG. 5 is basic data showing damper opening / closing control characteristics.

FIG. 6 is a flowchart showing a ventilation operation of the present invention.

FIG. 7 is another flowchart showing the ventilation operation of the present invention.

FIG. 8 is still another flowchart showing the ventilation operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ventilation device 11 Building 12 Ceiling 13 Ventilation frame 14a Main intake opening 14b Exhaust opening 14c, 14d Secondary intake opening 17 Partition plate 18 Damper device 19 Control device 20 Blower 22 Exhaust duct 24 Exhaust tower

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[Procedure amendment]

[Submission date] June 1, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art Generally, a ventilation device is mounted on a wall of a room, a kitchen, a bathtub, or the like, and a fan is operated to provide ventilation when needed. However, in such a ventilation device, the blower must be operated each time ventilation is performed, and the operation is very troublesome.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

The control device 19 is provided below the blower 20 and makes it difficult for the operating noise of the blower 20 transmitted to the lower room A and the like to be transmitted to the lower room and the like.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

As shown in FIG. 4, the control device or control unit 19 is a sensor 1 which is an air flow detecting means such as a differential pressure sensor.
9aa, 19ab, an arithmetic control processing unit 19b such as a CPU and a timer, and output terminal units 19c and 19d.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction contents]

In this heating state, the air density in the chambers A, B... Becomes lighter than the outside air density, and buoyancy is generated from the lower part to the upper part as shown by arrows. Due to this buoyancy, outdoor air flows into the interior of the building 11 from the air inlets 11a, 11b, 11c, 11d, etc., thereby increasing the internal air pressure of the rooms A, B,..., And the ventilation frame such as the air intake opening 14a of the ventilator 10. 13, the damper device 18, the natural passage, the second passage N as the natural ventilation passage, the first passage R as the forced ventilation passage, the exhaust duct 22, and the exhaust tower 24 naturally flow outdoors. This ventilation flow rate Q
Detected by nine sensors 19aa and 19ab.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0045

[Correction method] Change

[Correction contents]

Incidentally, the ventilation air volume Q depends on the size of the room A, etc., but it is considered that ventilation is insufficient if it is less than 100 m3 / h in a normal building, and is 100 m3 / h or more and 180 m3 / h or more.
It is said that if the value is less than h, the ventilation is appropriate, and if it is 180 m3 / h or more, it is slightly too large.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Change

[Correction contents]

Based on such basic data, the damper device 1
8 was fully opened, and the relationship between the ventilation air volume Q and the opening of the damper 18a was experimentally examined. FIG. 5 shows the result. According to this, in the normal control, the opening degree of the damper 18a is set to 90 ° (fully open) when the ventilation air volume Q is 0 m3 / h or more and less than 180 m3 / h. In addition, 180 m3 / h or more and 225 m3
When the opening degree of the damper 18a is set to 60 ° when there is a ventilation air volume Q of less than 100 m3 / h, it is set to 100 m3 / h or more and 180 m3.
/ H.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

Similarly, if the opening degree of the damper 18a is gradually reduced as the ventilation air volume Q increases, the ventilation air volume Q becomes 1
It can be not less than 00 m3 / h and less than 180 m3 / h.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0049

[Correction method] Change

[Correction contents]

Further, when the user wants to increase the ventilation air volume Q, or when ventilating a place such as a cafeteria where humidity and odor are high, the control device 19 increases the ventilation.
Is switched from the first ventilation mode (normal control) to the second ventilation mode (strong control).

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0050

[Correction method] Change

[Correction contents]

In the second ventilation mode, the ventilation air volume Q is 180
If it is less than m3 / h, it will be insufficient, and if it is 180 m3 / h or more and less than 260 m3 / h, it will be appropriate ventilation, and 260 m3 / h.
h is too much. The results of this experiment are also shown at the bottom of FIG. 5 as strong control.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction contents]

From such ventilation characteristics, a case where the ventilation air volume Q is, for example, 100 m3 / h is set as the first set value, and 18
The case of 0 m3 / h is set as the second set value, the value less than the first set value of 100 m3 / h is slightly insufficient, and the first set value of 100 is set.
A description will be given of a case in which the damper device 18 and the blower 20 are specifically selected and controlled by setting appropriate ventilation at m3 / h or more and less than the second set value of 180 m3 / h and ventilation at a second set value of 180 m3 / h or more as excessive ventilation. I do.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0053

[Correction method] Change

[Correction contents]

The sensors 19aa and 19ab are 100 m3 /
When a ventilation air volume Q of h or more and less than 180 m3 / h is detected, this is an appropriate ventilation air volume Q, so that the damper device 18 and the blower 20 are not controlled at all as shown in FIG. 6 (S1).

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction contents]

The sensors 19aa and 19ab are 100 m3 /
When the ventilation air volume Q less than h is detected, this is insufficient ventilation, so that the controller 19 needs to rotate the blower 20 to perform forced ventilation of the room A or the like by selectively controlling the forced ventilation mode as shown in FIG. is there.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Change

[Correction contents]

In such a ventilation operation, when the ventilation air volume Q is 100
The ventilation is performed until the appropriate ventilation is at least m3 / h and less than 180 m3 / h. This ventilation causes operation noise of the blower 20, but this noise is less likely to be transmitted to the room A and the like by the control device 19 disposed below the electric motor 20, so that the user does not feel uncomfortable. However, this forced ventilation consumes power because the motor 20c is operated.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction contents]

The rotation of the blower 20 is made to rotate at the normal speed. However, when the insufficient ventilation air volume Q is less than 50 m3 / h under the control of the control device 19, the ventilation air volume Q is increased by 100 m3 / h or more to 180 m3 by high-speed rotation. / H is controlled to be less than 80 m3 / h.
Control may be performed so as to be less than 0 m3 / h.

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0062

[Correction method] Change

[Correction contents]

The closing control of the damper 18a is performed based on the experimental data based on the ventilation air volume Q of 180 m3 / h or more and 225 m3 / h.
If the air flow rate Q is less than 300 m3 / h, the damper 18a is selectively controlled to 45 ° or the like and closed, and the state is maintained for about 1 hour. Fully open, the ventilation air volume Q is detected, and the operation is repeatedly performed until an appropriate ventilation air volume Q is obtained (S5), (S5).
6), (S7), (S8).

[Procedure amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0065

[Correction method] Change

[Correction contents]

Although not shown, a stopper made of a rib is provided in the damper frame almost all around so that the damper 18a does not rotate excessively clockwise and hinder the detection of the sensor 19ab. Regulate.

[Procedure amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0070

[Correction method] Change

[Correction contents]

The outdoor air sometimes accompanies a strong wind, and may flow backward from the exhaust tower 24 to the rooms A and B via the exhaust duct 22 and the ventilator 10.

[Procedure amendment 18]

[Document name to be amended] Statement

[Correction target item name] 0071

[Correction method] Change

[Correction contents]

In this state, the sensor 1 having a cutout at the top is
By using 9ab, this can be appropriately detected as a dynamic pressure. As shown in FIG. 8, the detected value is captured as an electric signal v by the control device 19, and when the electric signal is v <O, it is determined that the ventilation air volume Q is headwind, and the blower 20 is forcibly ventilated. (S2
2), (S23), (S24). Since this control method is the same as the forced ventilation control of the fan 20c, a detailed description is omitted.

[Procedure amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0072

[Correction method] Change

[Correction contents]

In this ventilation control, the electric signal is 0 ≦ v ≦ 0.
If the airflow rate is 05, the ventilation air volume Q is determined to be insufficient ventilation of less than 100 m3 / h, and the blower 20 can be forcedly operated to eliminate the insufficient ventilation (S25), (S2).
2), (S23), (S24), and when the electric signal is 0.
If 05 <v, the control device 19 selects the natural ventilation mode assuming that the ventilation air volume Q is 100 m3 / h or more, and does not rotate the blower 20 (S26), (S2).
7).

[Procedure amendment 20]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

[Fig. 5]

[Procedure amendment 21]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

[Fig. 7]

[Procedure amendment 22]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

[Fig. 8]

Claims (13)

[Claims] 1. A ventilation frame provided with an intake opening on one side and an exhaust opening on the other side, a blower provided in the ventilation frame, a control device for controlling the rotation of the blower, and not rotating the blower. A natural ventilation mode in which natural ventilation is performed from the intake opening to the exhaust opening, and a forced ventilation mode in which the blower is rotated to forcibly suck air from the intake opening and discharge from the exhaust opening, and the natural ventilation mode and the natural ventilation mode And a selection control device for selectively controlling one of the forced ventilation modes. 2. A ventilation frame having an intake opening on a lower surface and an exhaust opening on an upper surface, which is disposed above a ceiling, a blower provided in the ventilation frame, and a blower provided in the ventilation frame. A ventilation device, comprising: a damper device mounted on an upstream side; and a control device for controlling the blower and the damper device. 3. An air flow detecting means for detecting an air flow exhausted from an exhaust opening in the ventilation frame, wherein the control device controls the opening degree of the damper device and rotates the blower based on the air flow detected by the air flow detecting means. The ventilation device according to claim 2, wherein the ventilation device is controlled. 4. The control device rotates the blower when the air volume detected by the air volume detection means is smaller than the first set value, and the air volume detected by the air volume detection means is larger than the first set value and larger than the second set value. When the number is smaller, the rotation of the blower is stopped, and the damper device is opened to a substantially full open state. When the value is larger than the second set value, the rotation of the blower is stopped and the opening / closing of the damper device is controlled. The ventilation device according to claim 3. 5. A first ventilation mode for flowing a normal ventilation air volume, a second ventilation mode for flowing a ventilation air volume different from the first ventilation mode, a first ventilation mode or a second ventilation mode. The ventilation device according to claim 4, further comprising a selection control device that selectively controls any one of the following. 6. The control device according to claim 1, wherein when the air flow detected by the air flow detecting means is equal to or more than a second set value, the opening of the damper device is selectively controlled in accordance with the detected air flow detected by the air flow detecting means. The ventilation device according to claim 4, characterized in that: 7. The control device closes the damper of the damper device at a predetermined angle when the air volume detected by the air volume detection means is equal to or greater than a second set value, detects the air volume, and the air volume becomes equal to or less than the second set value. The ventilator according to claim 4, wherein the damper of the damper device is further closed until the operation is completed. 8. The control device according to claim 1, wherein when the air flow detected by the air flow detecting means is equal to or less than the first set value, the rotation of the blower is increased or decreased in accordance with the air flow detected by the air flow detecting means. The ventilation device according to claim 4, wherein 9. The ventilation frame is provided with two independent air outlets.
The ventilation device according to claim 2, wherein two passages are provided side by side, and a blower is provided in one passage. 10. A sirocco fan is provided in a blower casing of the blower, and the sirocco fan is mounted on the blower casing in an axially horizontal manner.
The ventilation device according to claim 2, wherein an exhaust opening is provided on an upper side of the ventilation casing. 11. The ventilation device according to claim 10, wherein a sub exhaust opening body extending to the exhaust opening is provided in the blower casing. 12. A first passage not provided with a blower is provided downstream of the damper device, a second passage having a blower mounted inside the first passage is provided, and the second passage is defined as a damper device. The ventilator according to claim 2, wherein the ventilator is biased to the opposite side. 13. A plurality of intake openings are provided on a side portion of a ventilation frame on an upstream side of a damper device.
The described ventilation system.