JP4092301B2 - Ventilation hood - Google Patents

Description

  The present invention relates to a technique for preventing clogging of an air inlet of a ventilation system for a house.

Generally, a filter for preventing insects and dust is provided at an air inlet of a ventilation system of a house.
Such a filter may be clogged with dust or fallen leaves sucked by the intake air.
In addition, as a technique for cleaning such filter clogging, a technique is known in which a windmill rotating by an air flow generated by intake air by a ventilation system is provided at the intake port, and the filter is cleaned by a brush attached to the windmill. (For example, Patent Document 1). In addition, a technique of providing a manual or electric cleaning brush for cleaning a filter at an intake port is also known (for example, Patent Document 2).
Japanese Utility Model Publication No. 63-11507 JP 7-174380 A

  Now, for example, in the case of a 24-hour ventilation type residential ventilation system, the air flow generated by the intake air by the ventilation system is weak. Therefore, in the technique described in Patent Document 1 in which the windmill is rotated together with the cleaning brush by the air flow by the ventilation system, when a relatively large foreign matter such as a fallen leaf is attracted or entangled with the filter, the foreign matter is resisted. In some cases, it is not possible to generate enough power to rotate the windmill. In this case, the filter cannot be cleaned.

On the other hand, the technique of providing a manual cleaning brush at the intake port is cumbersome and cumbersome. In addition, the user may forget such cleaning work and may be left without the ventilation system functioning properly.
In addition, with the technology that provides an electric cleaning brush at the air intake, special wiring equipment is required when using a commercial power supply, and when the battery is used as a power supply, the air intake is usually provided at a high place. The burden of battery replacement becomes large. In addition, when the battery is used as a power source, the user may forget such a battery replacement operation and may be left without the ventilation system functioning properly.

  Then, this invention makes it a subject to provide the ventilation port hood which can clean the filter of a ventilation port appropriately, reducing the burden on a user or an installation.

  In order to achieve the above object, the present invention provides a ventilation hood provided in a ventilation opening, a housing that forms a passage for air between the outside air and the ventilation opening, and a foreign object entering the ventilation opening. It comprises a filter, a windmill that is rotated by the surrounding natural wind, and a cleaning brush that performs the cleaning movement of the filter by using the rotation of the windmill as a power.

  According to such a vent opening hood, the filter can be cleaned using natural wind. Here, since the absolute amount of natural wind is larger than the ventilation wind at the ventilation opening, sufficient power can be obtained by using an appropriate windmill, when a relatively large foreign object is attracted or entangled with the filter However, the filter can be properly cleaned. In addition, since it is not always necessary to clean the filter, there is no practical problem even if there is a time zone in which the natural wind is no wind.

Here, it is also preferable that the cleaning brush in such a vent hood is a spiral brush that rotates with the rotation of the windmill.
By doing in this way, the foreign material which attracted or entangled with the filter can be well swept out of the filter.
Alternatively, these ventilation port hoods are provided with a generator that generates electricity by rotation of the windmill, a power storage unit that stores electric power generated by the generator, and the presence or absence of ventilation air at the ventilation port or the size of the ventilation air. The ventilation air sensor to detect, the motor that causes the cleaning brush to perform the cleaning movement of the filter, and the ventilation air sensor detect that there is no ventilation air or the size of the ventilation air is smaller than a predetermined level. In this case, it is also preferable to provide a control means for driving the motor using the power stored in the power storage unit.

  In this way, if the filter is clogged during the period when there is no natural wind, it will be detected from the presence or size of the ventilation air and automatically moved to the cleaning brush by the motor. The filter can be cleaned. In other words, even when the natural wind is no wind, the filter can be cleaned without any trouble when the filter is clogged. Moreover, since the power of this motor is ensured by wind power generation by a windmill, there is no need for battery replacement or the like. Also, since one windmill is used for both the generation of power stored in advance for cleaning the filter when there is natural wind and the filter when the filter is clogged when there is no natural wind, The above effects can be achieved by a typical configuration.

In addition, since clogging of the normal filter is eliminated by operating the cleaning brush for a short time, a large amount of electric power is not required for cleaning for eliminating the filter clogging.
In order to achieve the above object, the present invention provides a housing that forms a passage for air between outside air and a ventilation port in a ventilation port hood provided in the ventilation port, and prevents foreign matter from entering the ventilation port. Filter, cleaning brush, motor for causing the cleaning brush to perform the cleaning movement of the filter, ventilation air sensor for detecting the presence or absence of ventilation air at the ventilation port, and the ventilation air sensor However, it is provided with a control means for driving the motor when it is detected that there is no ventilation air or the magnitude of the ventilation air is smaller than a predetermined level.

According to such a vent hood, the cleaning brush can automatically perform a cleaning exercise only when it is clogged. Therefore, even when the power source of the motor depends on the battery, it is possible to clean the filter appropriately while reducing the replacement frequency.
Here, in this ventilation port hood, the ventilation wind sensor is set to the second windmill that is rotated by the ventilation wind at the ventilation port, and the presence or absence of ventilation wind at the ventilation port or from the rotation state of the second windmill. A rotation detecting means for detecting the magnitude of the wind, and a generator for generating electricity by rotation of the second windmill in the ventilation hood, and a power storage unit for storing the electric power generated by the generator. And the control means uses the power stored in the power storage unit when the ventilation air sensor detects that there is no ventilation air or the magnitude of the ventilation air is smaller than a predetermined level. The motor may be driven.

  Alternatively, the ventilation wind sensor may be a second windmill that is rotated by the ventilation wind at the ventilation opening, a generator that generates power by the rotation of the second windmill, and ventilation at the ventilation opening from the power generation state of the generator. A rotation detecting means for detecting the presence or absence of wind or the magnitude of the ventilation wind, and a power storage section for storing the power generated by the generator in the ventilation hood. However, when it is detected that there is no ventilation air or the magnitude of the ventilation air is smaller than a predetermined level, the motor may be driven using the electric power stored in the power storage unit.

  By doing in this way, in the efficient structure which shares the 2nd windmill as a power source for the detection of the presence or size of ventilation wind, and the cleaning of a filter, without the necessity of wiring or battery exchange In addition, it is possible to realize the cleaning of the filter by the automatic and appropriate cleaning brush only when clogging occurs.

  As described above, according to the present invention, it is possible to provide a vent hood that can properly clean the vent filter while reducing the burden on the user and equipment.

Hereinafter, embodiments of the present invention will be described.
First, the first embodiment will be described.
FIG. 1 shows the configuration of the vent hood according to the first embodiment.
In the figure, a is a front view of the vent hood, b is a side view of the vent hood, c is a rear view of the vent hood, d is a top view of the vent hood, and e is a bottom view of the vent hood. In addition, f in the drawing is a cross-sectional view taken along the cutting line AA in FIG. And g in a figure is a figure which shows the shape of the cleaning brush with which this ventilation port hood is equipped.

Here, as shown in FIG. 1h, the present vent hood 10 is used to prevent intrusion of rainwater, dust and insects at the end of the outside air intake duct 101 of the ventilation system led to the vicinity of the duct hole provided on the outer wall of the house. For example, as shown in the figure, it is installed at the height of the outer wall of the house.
Now, as shown to a-g in a figure, the ventilation opening hood has the housing 1, the filter 2, the brush 3, and the windmill 4. FIG.
The housing 1 is a dome-shaped member that is open at a substantially lower side, and is connected to the outside air intake duct 101 and has a cylindrical connecting portion 11 for conducting air inside the outside air intake duct and the housing 1. Next, the filter 2 is a bowl-shaped member that opens downward, and has a side surface formed of an insect-proof or dust-proof net or mesh. The filter 2 is fixed inside the housing 1. Next, the brush 3 includes a shaft portion 31 and a spiral brush portion 32, and the shaft portion 31 is rotatably supported by the housing 1. Further, the spiral brush portion 32 is a collection of synthetic fiber hairs spirally planted on the shaft, and has a spiral shape (having a screw shape) as a whole as shown in FIG. 1g. And such a brush 3 is arrange | positioned so that the front-end | tip of the hair of the spiral brush part 32 may contact | abut lightly the inner surface of the side part of the bowl-shaped filter 2. FIG.

Finally, the windmill 4 is connected to the shaft portion 31 and rotates by natural wind.
In such a configuration, the outside air is introduced into the inside of the housing 1 from below through the blades of the windmill 4 as indicated by arrows in the wind diagram by the intake force of the ventilation system, and passes through the filter 2. The air is sucked into the outside air intake duct through the connecting portion 11. Therefore, insects that have entered the inside of the housing 1, dust or fallen leaves sucked into the inside of the housing 1 by intake air are captured by the inner surface of the filter 2.
On the other hand, when natural wind is generated outside the house, the windmill 4 rotates, and the shaft portion 31 connected to the windmill 4 rotates together with the spiral brush portion 32 in conjunction with this rotation.

  Then, the spiral brush portion 32 rotates while contacting the tip of the hair with the inner surface of the filter 2 to clean the inner surface of the filter 2. Further, at this time, the foreign matter attached to the filter 2 is pushed downward by the spiral shape, and finally falls from below the filter 2.

The first embodiment of the present invention has been described above.
Thus, according to the first embodiment, the filter 2 can be cleaned using natural wind. Here, since the absolute amount of natural wind is larger than the intake air by the ventilation system, sufficient power can be obtained by using an appropriate windmill 4. Therefore, even when a relatively large foreign object is attracted to or entangled with the filter 2, the filter 2 can be properly cleaned. In addition, since it is not always necessary to clean the filter 2, there is no practical problem even if there is a time zone in which the natural wind is no wind.

Moreover, since the brush 3 provided with the spiral-shaped spiral brush portion 32 that rotates with the rotation of the windmill 4 is used as the brush 3, foreign matters that are attracted to or entangled with the filter 2 can be satisfactorily removed from the ventilation hood. It can be swept out.
Hereinafter, a second embodiment of the present invention will be described.
FIG. 2 a shows a cross-sectional structure of a vent hood according to the second embodiment. Moreover, the structure of the electric system of the ventilation opening hood which concerns on this 2nd Embodiment is shown in FIG.
As shown in the figure, the vent hood according to the second embodiment further includes a motor 51 for rotating the shaft and the intake air of the connecting portion 11 with respect to the vent hood according to the first embodiment shown in FIG. A wind pressure sensor 52 that detects the presence or absence of wind, a power storage circuit 53 that stores electric power, a control circuit 54, and a switch 55 are provided.

In such a configuration, the control circuit 54 performs the following operation using the power provided by the power storage circuit 53.
In other words, the control circuit 54 controls the switch 55 to charge the power line of the motor 51 and charge the power storage circuit 53 during a period in which it is confirmed from the output of the wind pressure sensor 52 that the intake air of the connecting portion 11 is normally present. Connect to the part. With this connection, the motor 51 functions as a generator that converts the rotation of the windmill 4 into electric power, and the electric power generated by the motor 51 is stored in the storage circuit 53.

  On the other hand, the control circuit 54 controls the switch 55 to control the power line of the motor 51 when it is detected from the output of the wind pressure sensor 52 that the intake wind of the connecting portion 11 does not exist or falls below the reference minimum value. Is connected to the power feeding section of the storage circuit 53. With this connection, the motor 51 is driven by the supply of electric power from the power storage circuit 53 to forcibly rotate the brush 3.

The second embodiment of the present invention has been described above.
According to the second embodiment as described above, when the filter 2 is clogged during the period when the natural wind is no wind, this is detected from the presence or absence of the intake air or the size thereof, and the motor is automatically detected. The cleaning brush 51 is caused to perform a cleaning motion by 51 to clean the filter 2. That is, even when the natural wind is no wind, if the filter 2 is clogged, the filter 2 can be cleaned without any trouble. Further, since the power of the motor 51 is secured by wind power generation by the windmill 4, there is no need for battery replacement or the like. In addition, since one windmill 4 is shared for both the cleaning of the filter 2 when there is a natural wind and the generation of electric power stored in advance for the filter cleaning when the natural wind is clogged when the filter is clogged, The above effects can be achieved by an efficient configuration.

Next, a third embodiment of the present invention will be described.
FIG. 3 a shows a cross-sectional structure of a vent hood according to the third embodiment. Moreover, the structure of the electric system of the ventilation opening hood which concerns on this 2nd Embodiment is shown in FIG. 3b.
As shown in the figure, the vent hood according to the third embodiment further includes a motor 51 for rotating the shaft and the intake air of the connecting portion 11 with respect to the vent hood according to the first embodiment shown in FIG. A wind pressure sensor 52 that detects the presence or absence of wind, a battery 56, a control circuit 54, and a switch 55 are provided, and the wind turbine 4 is eliminated.

In such a configuration, the control circuit 54 performs the following operation using the power provided by the power storage circuit 53.
That is, the control circuit 54 controls the switch 55 to control the power from the battery 56 to the motor 51 during a period when it is confirmed from the output of the wind pressure sensor 52 that the intake air of the connecting portion 11 is normally present. Shut off the supply. On the other hand, when it is detected from the output of the wind pressure sensor 52 that the intake air of the connecting portion 11 does not exist or falls below the reference minimum value, the control circuit 54 controls the switch 55 to Electric power is supplied to the motor 51. With this connection, the motor 51 is driven by the supply of electric power from the power storage circuit 53 to forcibly rotate the brush 3.

The third embodiment of the present invention has been described above.
According to the third embodiment, the filter 2 can be cleaned by automatically rotating the brush 3 only when the filter 2 is clogged. Therefore, the frequency of replacement of the battery 56 can be reduced, and the proper filter 2 can be cleaned while reducing the burden on the user.

The fourth embodiment of the present invention will be described below.
FIG. 4 a shows a cross-sectional structure of a vent hood according to the fourth embodiment. Moreover, the structure of the electrical system of the ventilating hood which concerns on FIG.
As shown in the drawing, the vent hood according to the fourth embodiment further includes a motor 51 for rotating the shaft and a power storage for storing electric power, with respect to the vent hood according to the first embodiment shown in FIG. A circuit 53, a control circuit 54, a switch 55, a vent wind turbine 6, a generator 57, and a rotation sensor 58 are provided, and the wind turbine 4 used in the first embodiment is omitted.

  In such a configuration, the vent wind turbine 6 is rotated by the intake air of the connecting portion 11. The rotation sensor 58 detects the rotation of the vent wind turbine 6. The power generator 57 generates power by the rotation of the vent wind turbine 6, and the power storage circuit 53 stores the power generated by the power generator 57.

The control circuit 54 performs the following operation using the power provided by the power storage circuit 53.
That is, the control circuit 54 controls the switch 55 during the period when it can be confirmed that the intake air of the connecting portion 11 is normally present from the rotation of the vent wind turbine 6 detected by the rotation sensor 58, and the power storage circuit The power supply from 53 to the motor 51 is cut off.
On the other hand, if the control circuit 54 detects that the intake wind of the connecting portion 11 does not exist or is lower than the reference minimum value from the rotation of the vent wind turbine 6 detected by the rotation sensor 58, the control circuit 54 turns on the switch 55. The electric power is supplied from the power storage circuit 53 to the motor 51. With this connection, the motor 51 is driven by the supply of electric power from the power storage circuit 53 to forcibly rotate the brush 3.

  By the way, the above 4th Embodiment may be made to provide the voltage sensor 59 which detects the magnitude | size of the electric power generation of the generator 57 instead of the rotation sensor 58, as shown in FIG. Since the magnitude of the power generation of the generator 57 depends on the rotation of the wind turbine, the presence / absence of intake air at the ventilation port can be detected in this way as in the case where the rotation sensor 58 is used.

In the fourth embodiment, the windmill 4 used in the first embodiment may be provided, and the power generated by the motor 51 may be charged to the power storage circuit 53 in the same manner as the second embodiment. Absent.
Heretofore, the fourth embodiment of the present invention has been described.
According to the fourth embodiment as described above, the efficiency of sharing the ventilating wind turbine 6 as a power source for detecting the presence / absence or size of intake air and cleaning the filter 2 without the need for wiring or battery replacement. In a typical configuration, it is possible to realize cleaning of the filter 2 with an automatic and appropriate cleaning brush only when clogging occurs.

In addition, each above-mentioned embodiment is applicable similarly not only as an intake port but as a ventilation port hood of an exhaust port.
In the above description, the brush 3 having spiral hairs is used as the brush 3. However, other shapes of the brush 3 may be used.

It is a figure which shows the structure of the ventilation port hood which concerns on 1st Embodiment of this invention. It is a figure which shows the structure of the ventilation port hood which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the ventilation port hood which concerns on 3rd Embodiment of this invention. It is a figure which shows the structure of the ventilation port hood which concerns on 4th Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Filter, 3 ... Brush, 4 ... Windmill, 6 ... Ventilation windmill, 10 ... This vent hood, 11 ... Connection part, 31 ... Shaft part, 32 ... Spiral brush part, 51 ... Motor, 52 DESCRIPTION OF SYMBOLS ... Wind pressure sensor, 53 ... Power storage circuit, 54 ... Control circuit, 55 ... Switch, 56 ... Battery, 57 ... Generator, 58 ... Rotation sensor, 59 ... Voltage sensor.

Claims (6)

A vent hood provided at the vent,
A housing forming an air passage between the outside air and the ventilation opening;
A filter to prevent the entry of foreign objects into the ventilation opening;
A windmill that rotates due to the surrounding natural wind,
A ventilation hood having a cleaning brush for performing a cleaning movement of the filter by using rotation of the windmill as power.
A vent hood according to claim 1,
The ventilation hood according to claim 1, wherein the cleaning brush is a spiral brush that rotates with the rotation of the windmill.
A vent hood provided at the vent,
A housing forming an air passage between the outside air and the ventilation opening;
A filter to prevent the entry of foreign objects into the ventilation opening;
A cleaning brush,
A motor that causes the cleaning brush to perform a cleaning movement of the filter;
A ventilation air sensor for detecting the presence or absence of ventilation air at the ventilation opening or the magnitude of the ventilation air;
A vent hood comprising: a control means for driving the motor when the ventilation air sensor detects that there is no ventilation air or the size of the ventilation air is smaller than a predetermined level. .
A vent hood according to claim 1,
A generator for generating electricity by rotation of the windmill;
A power storage unit for storing electric power generated by the generator;
A ventilation air sensor for detecting the presence or absence of ventilation air at the ventilation opening or the magnitude of the ventilation air;
A motor that causes the cleaning brush to perform a cleaning movement of the filter;
Control means for driving the motor using the electric power stored in the power storage unit when the ventilation air sensor detects that there is no ventilation air or the magnitude of the ventilation air is smaller than a predetermined level. Ventilation hood characterized by having.
A vent hood according to claim 3,
The ventilating air sensor detects a presence or absence of a ventilation air at the ventilation port or a magnitude of the ventilation air from a second wind turbine rotating by the ventilation air at the ventilation port and a rotation state of the second wind turbine. Consisting of means,
The vent hood is
A generator for generating electricity by rotation of the second windmill;
A power storage unit that stores the power generated by the generator;
The control means uses the electric power stored in the power storage unit when the ventilation air sensor detects that the ventilation air is not present or the magnitude of the ventilation air is smaller than a predetermined level. Ventilation hood characterized by driving.
A vent hood according to claim 3,
The ventilation wind sensor includes: a second windmill that is rotated by ventilation air at the ventilation opening; a generator that generates power by rotation of the second windmill; and a state of ventilation air at the ventilation opening based on a power generation state of the generator. It consists of rotation detection means that detects the presence or absence or the magnitude of ventilation air,
The vent hood is
A power storage unit that stores the power generated by the generator;
The control means uses the electric power stored in the power storage unit when the ventilation air sensor detects that the ventilation air is not present or the magnitude of the ventilation air is smaller than a predetermined level. Ventilation hood characterized by driving.

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