JP2012166182A - Dust remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain a filter from being plugged with dust in the filter used for a dust remover for collecting and removing dust contained in air when supplying the air.SOLUTION: The dust remover includes an intake duct 2 leading outside air into a room 21; an exhaust duct 4 leading the air in the room 21 outdoors 20; a disk-shaped brush filter 6 covering the exhaust duct 4 simultaneously with collecting dust contained in the air passing through the intake duct 2; and a motor 8 for making the brush filter 6 rotatable and movable. A protrusion 7 provided to come in sliding contact with the outer peripheral edge of the brush filter 6 is disposed in the exhaust duct 4 to come in sliding contact with the outer peripheral edge of the brush filter 6. The collected dust is thereby scattered by repulsion caused by sliding contact between the brush filter 6 and the protrusion 7 and removed to outdoors by exhaust dynamic pressure. Consequently, dust does not intrude into the room 21, and the brush filter 6 is repeatedly cleaned to restrain a drop in the amount of ventilating air caused by plugging of dust.

Description

  The present invention relates to a dust removing device that is used to collect and remove dust contained in the atmosphere when taking outside air into a room for ventilation.

  Conventionally, this type of dust remover uses a filter to collect dust during intake, but if dust accumulates in this filter, pressure loss increases and ventilation airflow decreases, so the filter must be replaced periodically. Or cleaning was necessary. Therefore, a dust removing device using a brush is known as means for removing dust without taking time (for example, see Patent Document 1).

  Hereinafter, the dust removing device will be described with reference to FIG.

  As shown in FIG. 8, the dust removing apparatus 101 has a suction port 105 and a discharge port 106 connected to a brush 103 and a motor 104 that are provided so that the outer diameter is in sliding contact with the filter 102 on the inner peripheral side of the filter 102. The brush 103 is rotatable. When collecting dust in the atmosphere or gas, the dust containing the dust flowing in from the suction port 105 is allowed to flow from the inside to the outside of the filter 102 so that the dust is collected on the inner peripheral surface of the filter 102. The purified gas flows out from the discharge port 106. When removing dust adhering to the filter 102, the brush 103 is rotated to be brought into sliding contact with the filter 102, and dust adhering to the inner peripheral surface of the filter 102 is removed by using a scraping force.

Japanese Patent Laid-Open No. 6-114225 (page 4, FIG. 1)

  In such a conventional dust removal device, dust is removed by scraping with a brush pressed against the filter. However, a part of the dust passes through the wire of the filter and penetrates into the back by the brush scraping force. Scraping makes it impossible to remove dust that has entered the interior. For this reason, when the filter is repeatedly cleaned with a brush, dust that cannot be removed by scraping the brush accumulates in the filter, and the filter is clogged with dust.

  Therefore, the present invention solves the above-described conventional problems, and an object of the present invention is to provide a dust removal device that suppresses a reduction in ventilation airflow by clogging dust by repeatedly cleaning a filter.

  In order to achieve this object, according to the present invention, the filter is configured in a brush shape, and the dust removing means is provided in the exhaust path so as to be in sliding contact with the filter, thereby achieving the intended object. Is.

  According to the present invention, the filter is configured in a brush shape, and the dust removing means is provided in the exhaust path so as to be in sliding contact with the filter, whereby the repulsive force generated between the dust removing means and the sliding contact is changed to an impact force. The dust collected in this way can be scattered in the exhaust path and simultaneously removed to the outside by the exhaust dynamic pressure, so that the dust does not enter the room, and the filter is repeatedly cleaned and clogged with dust, reducing the ventilation air flow. The effect which suppresses can be acquired.

The block diagram which shows the side cross section of the dust removal apparatus of Embodiment 1 of this invention The block diagram which shows the A-A 'cross section of Embodiment 1 of this invention Detailed view of control unit of embodiment 1 of the present invention Flowchart of Embodiment 1 of the present invention The block diagram which shows the side cross section of the dust removal apparatus of Embodiment 2 of this invention The block diagram which shows the B-B 'cross section of Embodiment 2 of this invention Flowchart of Embodiment 2 of the present invention The block diagram which shows the side cross section of the conventional dust remover

  According to a first aspect of the present invention, there is provided a dust removing device comprising: an intake air blower that sucks outside air into a room; an intake path that guides air into the room by the intake blower; an exhaust blower that exhausts indoor air; and A filter that covers the exhaust path at the same time as collecting the dust contained in the air passing through the exhaust path and the intake path, the motor that rotates the filter, and the dust collected in the filter are removed. Dust removing means is provided, the filter is configured in a brush shape, and the dust removing means is provided in the exhaust path so as to be in sliding contact with the filter. Thereby, the dust collected by the brush-like filter is vibrated using the repulsive force caused by the sliding contact with the dust removing means to be scattered in the exhaust path and simultaneously removed by the exhaust dynamic pressure. In addition, the filter is repeatedly cleaned to prevent dust from being clogged and reducing the ventilation airflow.

  The filter may have a disk shape. As a result, the area required for rotation of the filter is minimized, and the size of the dust removing device is reduced.

  Further, the dust removing means may be provided so as to be in sliding contact with the outer peripheral edge of the filter. Thereby, there exists an effect that repulsive force can be accumulate | stored in a brush with an easy structure.

  Further, in the intake path, a configuration may be provided in which dirt detection means for measuring the pressure loss on the downstream side with respect to the upstream side of the filter and detecting an increase in pressure loss due to dust adhering to the filter surface is provided. This produces an effect of detecting the degree of dirt on the filter due to dust collection.

  Further, the filter may be rotated at a certain angle. As a result, dust can be easily moved to the exhaust path only when the filter needs to be cleaned, so that the power consumption of the motor can be reduced.

  Further, the filter may be continuously rotated. Thereby, there exists an effect that the fall of the dust collection performance can be suppressed by cleaning a filter continuously.

  In the exhaust path, a resistance plate having a plurality of holes opened substantially uniformly may be provided upstream of the filter. Thereby, the wind speed which passes the said filter can be made substantially uniform fast, and there exists an effect of promoting the removal of dust.

  The area of the filter may be divided to provide a shock absorber. As a result, the vibration of the brush is transmitted to the intake path, and the collected dust can be prevented from scattering.

  Further, a configuration may be provided in which a control unit is provided that rotates the motor to move the filter to the exhaust path when the amount of increase in pressure loss by the dirt detection unit exceeds an arbitrary value. Thereby, there exists an effect that the structure which cleans a filter automatically is realizable easily.

  Further, when the increase in pressure loss due to the dirt detection means is large, a configuration may be provided in which a control unit is provided to increase the rotation speed of the filter by increasing the output of the motor. Accordingly, there is an effect that when the filter is heavily soiled, cleaning of the filter can be promoted.

  Further, the exhaust path may be arranged on the lower side in the direction of gravity with respect to the intake path. Thereby, since dust falls to an exhaust path by gravity, there exists an effect that it can suppress that dust penetrate | invades into an intake path.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the dust removing device 1 includes an intake duct 2 for taking in air in the outdoor 20, an intake blower 3 for taking in air, an exhaust duct 4 for exhausting air in the room 21, and exhausting air. Exhaust blower 5, disc-shaped brush filter 6 that collects dust contained in the air passing through intake duct 2, and protrusions provided on exhaust duct 4 so as to slidably contact the outer peripheral edge of brush filter 6 substantially uniformly. Part 7, a motor 8 for continuously rotating the brush filter 6 at a constant rotational speed (for example, 10 rpm), and a resistance in which a plurality of holes are provided substantially uniformly on the upstream side of the brush filter 6 in the exhaust duct 4 A plate 19, a pitot tube 9 provided upstream and downstream of the brush filter 6, a differential pressure gauge 10 that measures a differential pressure from the pitot tube 9, and a control unit 11 that adjusts the output of the motor 8 are provided. In which, in the case of actually applying a dust remover 1, spaced cavities in the building wall 22, attached so as to bury the dust removing device 1.

  Further, as shown in FIG. 2, the brush filter 6 is formed by radially inserting stab hairs 13 having a substantially uniform length from the ring 12, the center shaft 14 of the motor 8 and the ring 12 are connected, and the ring 12 is It consists of a metal member 15 and an anti-vibration rubber 16.

  As shown in FIG. 3, the control unit 11 receives a signal from the differential pressure gauge 10 and includes a microcomputer 17 that adjusts the output of the motor 8 and a motor drive driver 18 that drives the motor 8. ing.

  According to such a configuration, the air in the outdoor 20 passing through the intake duct 2 collects dust with the brush filter 6 and is supplied into the room in a purified state. At the same time, the air in the room 21 is exhausted into the exhaust duct 4. The air in the room 21 is ventilated by repeating this air supply and exhaust.

  The continuously rotating brush filter 6 changes the repulsive force accumulated by the projecting portion 7 in sliding contact with the impact force to vibrate the stabbing hair 13 and scatters the collected dust into the exhaust duct 4. Thus, the air whose wind speed is increased passes through the brush filter 6 substantially uniformly, so that dust can be more effectively removed.

  Here, compared with the filter in which the conventional wire is intertwined in a complicated manner, the stab 13 constituting the brush filter 6 of the present invention is regularly planted radially from the ring 12, so that the impact force is the entire stab 13. Since the protrusion 7 has a width substantially equal to that of the brush filter 6, the impact force is transmitted to all the stab 13 that is in sliding contact with the protrusion 7, and the collected dust can be easily re-scattered.

  Furthermore, since the ring 12 is composed of the metal member 15 and the vibration-proof rubber 16, when the impact force is applied to the stab 13 that is implanted in one member, the stab that is implanted in the other member. Since the impact force transmitted to the bristles 13 can be suppressed, it is possible to suppress the collected dust from re-scattering and entering the room 21 in the intake duct 2.

  Further, according to the flowchart of the control unit 11 in FIG. 4, when the amount of dust contained in the air is large and the pressure loss values upstream and downstream of the brush filter 6 exceed a specified value (for example, 80 Pa), the control unit 11 changes the rotation speed of the brush filter 6 by changing the output of the motor 8 (for example, 20 rpm) to prompt cleaning. If the pressure loss falls below a specified value, the output of the motor 8 is changed again to return the rotational speed of the brush filter 6.

  As a result, the brush filter 6 is automatically cleaned while preventing entry of dust into the room 21. Further, the brush filter 6 is repeatedly cleaned to prevent dust from being clogged and lowering the ventilation air volume.

(Embodiment 2)
5 and 6, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

  5 and 6, the motor 8 rotates the brush filter 6 at a certain angle (for example, 180 degrees in the second embodiment), and the projection 7 is formed on the wall surface where the intake duct 2 and the exhaust duct 4 are in contact with each other. Of these, the width of the brush filter 6 is approximately the same as the thickness of the brush filter 6 on the left side of the paper surface.

  According to such a configuration, according to the flowchart of FIG. 7, when the value of the differential pressure gauge 10 exceeds a specified value (for example, 80 Pa) by collecting dust in the brush filter 6, the control unit 11 rotates the motor 8. The portion of the brush filter 6 that collects dust can be moved to the exhaust duct 4 by rotating the exhaust filter 4 degrees. At this time, when the stab 13 and the projection 7 are in sliding contact, repulsive force is accumulated in the stab 13 and the collected dust is scattered when the energy is released. As shown in the second embodiment, the projection When the portion 7 is provided, the stab 13 moves in the direction of the exhaust duct 4 when energy is released, so that dust can be removed without entering the intake duct 2.

  As a result, the dust removal device 1 is less energy-consuming than the first embodiment by cleaning the brush filter 6 when necessary according to the degree of dirt on the brush filter 6, and is energy-saving. It is possible to prevent clogging and decrease in ventilation airflow.

  The dust removing device according to the present invention suppresses clogging of a filter that collects dust contained in the air when supplying air, and is therefore used to take in outdoor air and exhaust indoor air. It is useful as an air supply / exhaust device.

DESCRIPTION OF SYMBOLS 1 Dust remover 2 Intake duct 3 Intake air blower 4 Exhaust air duct 5 Exhaust air blower 6 Brush filter 7 Protrusion part 8 Motor 9 Pitot tube 10 Differential pressure gauge 11 Control part 12 Ring 13 Sting 14 Center shaft 15 Metal member 16 Anti-vibration rubber 17 Microcomputer 18 Motor drive driver 19 Resistance plate 20 Outdoor 21 Indoor 22 Building wall

Claims (11)

An intake air blower for taking outside air into the room;
An intake path for guiding air into the room by the intake blower;
An exhaust blower for exhausting indoor air;
An exhaust path that guides air to the outside by the exhaust blower and a filter that covers the exhaust path at the same time as collecting dust contained in the air passing through the intake path;
A motor for rotating the filter;
A dust removing means for removing dust collected in the filter;
A dust removing device in which the filter is configured in a brush shape, and the dust removing means is provided in the exhaust path so as to be in sliding contact with the filter. The dust removing device according to claim 1, wherein the filter has a disk shape. The dust removing device according to claim 2, wherein the dust removing means is provided so as to slidably contact an outer peripheral edge of the rotating filter. 4. The apparatus according to claim 1, further comprising: a dirt detection unit configured to measure a pressure loss on the downstream side of the upstream side of the filter in the intake path and detect an increase in pressure loss due to dust collected on the filter. The dust removing device according to item. The dust removing device according to any one of claims 1 to 4, wherein the filter is rotated at a constant rotation angle. The dust removing device according to any one of claims 1 to 4, wherein the filter is continuously rotated. 7. The dust removing device according to claim 1, wherein a resistance plate having a plurality of holes substantially uniformly opened is provided upstream of the filter in the exhaust path. The dust removing device according to any one of claims 1 to 7, wherein the filter is divided to provide an impact absorbing material. 6. The dust removing apparatus according to claim 5, further comprising a control unit configured to rotate the motor by 180 degrees and move the filter to the exhaust path when an increase in pressure loss by the dirt detection unit is greater than an arbitrary value. The dust removing device according to claim 6, further comprising: a control unit that increases the output of the motor to increase the rotation speed of the filter when the increase in pressure loss due to the dirt detection unit is large. The dust removal device according to any one of claims 1 to 10, wherein the exhaust path is disposed below the intake path in a gravitational direction.

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