WO2019229797A1

WO2019229797A1 - Dust collection device and air conditioner equipped with dust collection device

Info

Publication number: WO2019229797A1
Application number: PCT/JP2018/020330
Authority: WO
Inventors: 保博中村; 彰則清水
Original assignee: 三菱電機株式会社
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2019-12-05
Also published as: CN112135689B; JP6498365B1; CN112135689A; JPWO2019229797A1; SG11202010301YA

Abstract

This dust collection device comprises: a plurality of collection plates that are electrified by friction and that are arrayed in an air passage in which air passes, with intervals between the collection plates in a direction intersecting the direction in which air passes; and a plurality of brushes that are inserted into the spaces which are between the collection plates and through which air passes, and that rub the surface of the collection plates and brush off the dust collected on the collection plates. The brushes are inserted into the spaces between the collection plates in a posture which follows the direction in which air passes.

Description

Dust collection device and air conditioner equipped with dust collection device

The present invention relates to a dust collection device that generates static electricity by friction and collects dust in the air, and an air conditioner equipped with the dust collection device.

Conventionally, as this kind of dust collection device, a plurality of collection plates arranged at intervals in the direction intersecting the air passage direction, and the gap between the collection plates are inserted into the surface of the collection plate. Some have a brush arranged so as to come into contact (see, for example, Patent Document 1). In Patent Document 1, static electricity is generated on the surface of the collecting plate by rotating the collecting plate and causing friction with the brush, and dust contained in the air passing between the collecting plates is electrostatically collected. ing.

JP-A 61-227860

In Patent Document 1, the brush is inserted between the collecting plates, but the posture of the brush with respect to the collecting plate is not clarified. Therefore, depending on the posture of the brush, the air path between the collecting plates is narrowed and the ventilation resistance is increased, and there is a possibility that sufficient dust collection performance cannot be obtained.

The present invention has been made in order to solve the above-described problems, and an object thereof is to provide a dust collection device having a low ventilation resistance and a high dust collection performance and an air conditioner equipped with the dust collection device. To do.

A dust collecting device according to the present invention is arranged in a wind passage through which air passes and is arranged at intervals in a direction intersecting the air passing direction, and a plurality of collecting plates charged by friction, and air between the collecting plates And a plurality of brushes that rub against the surface of the collecting plate and wipe off dust collected by the collecting plate, and the brush is in a posture along the air passage direction. It is inserted into the gap between the collecting plates.

According to the present invention, since the brush is in a posture along the air passing direction, the narrowing of the air path between the collecting plates is suppressed, the ventilation resistance is small, and a dust collecting device with high dust collecting performance can be realized.

It is a schematic sectional drawing of the air conditioner carrying the dust collection device which concerns on Embodiment 1 of this invention. 1 is a perspective view of a dust collection device according to Embodiment 1 of the present invention. It is a perspective view of the brush of FIG. It is a flowchart explaining operation | movement of the air conditioner carrying the dust collection device which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the dust collection device which concerns on Embodiment 2 of this invention. It is a flowchart explaining operation | movement of the air conditioner provided with the dust collection device which concerns on Embodiment 2 of this invention. It is a perspective view which shows the structure of the dust collection device which concerns on Embodiment 3 of this invention. It is a flowchart explaining operation | movement of the air conditioner provided with the dust collection device which concerns on Embodiment 3 of this invention. It is a perspective view which shows the structure of the dust collection device which concerns on Embodiment 4 of this invention.

Hereinafter, preferred embodiments of the dust collection device according to the present invention will be described with reference to the drawings. In addition, the same or corresponding parts in each drawing will be described with the same reference numerals.

Embodiment 1 FIG.
With reference to FIGS. 1-4, the air conditioner which mounts the dust collection device which concerns on Embodiment 1, and a dust collection device is demonstrated.

FIG. 1 is a schematic cross-sectional view of an air conditioner equipped with a dust collection device according to Embodiment 1 of the present invention. In addition, the white arrow shown in FIG. 1 and each figure mentioned later has shown the flow of air.
The air conditioner includes a dust collection device 1 and a heat exchange ventilator 10, and is housed in a descending ceiling 20 in a house. The falling ceiling 20 refers to a region where a part of the ceiling is lowered as shown in FIG. From the point of view of indoor aesthetics, there are many houses where air conditioners and other air-conditioning equipment are collectively stored in the ceiling 20 as shown in FIG. When the falling ceiling 20 is used as the installation space, a wide installation space can be ensured as compared with a case where the installation is generally indoors.

In FIG. 1, an outdoor air supply port 21 and an outdoor exhaust port 22 are provided on the outdoor wall surface. In addition, an indoor air supply port 23 and an indoor exhaust port 24 are provided on the indoor ceiling 20. A supply air passage 30 and an exhaust air passage 40 are formed in the falling ceiling 20. The air supply air passage 30 is an air passage that takes outdoor air from the outdoor air supply port 21 and takes it into the ceiling 20 and blows the air from the indoor air supply port 23 into the room. The exhaust air passage 40 is an air passage that takes in indoor air from the indoor air outlet 24 and takes it into the ceiling 20 and exhausts it from the outdoor air outlet 22 to the outside.

The dust collection device 1 and the heat exchange ventilator 10 are arranged in the supply air passage 30 in order from the upstream side. In addition, the heat exchange ventilator 10 is disposed in the exhaust air passage 40. In the air supply air passage 30, the outdoor air supply port 21 and the indoor air supply port 23 are connected by a duct 31 through the dust collection device 1 and the heat exchange ventilator 10. In the exhaust air passage 40, the indoor exhaust port 24 and the outdoor exhaust port 22 are connected by a duct 41 through the heat exchange ventilator 10.

The heat exchange ventilator 10 is a ventilator having a ventilation function and an air conditioning auxiliary function. The ventilation function is a function of supplying outdoor air to the room and exhausting the indoor air to the outside. As a configuration for realizing this ventilation function, the heat exchanging ventilator 10 includes a fan (not shown) that blows air from the outdoor side to the indoor side in the supply air passage 30 and the indoor side to the outdoor side in the exhaust air passage 40. And a fan (not shown) for blowing air.

The air conditioning auxiliary function is a function that assists the air conditioning operation of equipment that adjusts the indoor temperature such as an air conditioner by collecting heat from the indoor air to be exhausted and applying the collected heat to the air to be supplied. . The air conditioning auxiliary function can be said to be an energy saving function because it reduces the energy burden on the device. As a configuration for realizing this air conditioning auxiliary function, the heat exchange ventilator 10 includes a heat exchanger (not shown) that exchanges heat between the air passing through the exhaust air passage 40 and the air passing through the supply air passage 30. .

The dust collection device 1 is a device that collects dust in outdoor air that has fallen from the outdoor air supply port 21 and has flowed into the ceiling 20. Details of the dust collecting device 1 will be described again. A particle sensor 11a and a particle sensor 11b for sensing the dust concentration of air are provided on the upstream side and the downstream side of the dust collection device 1, respectively. The upstream particle sensor 11a detects the dust concentration in the outdoor air, and the downstream particle sensor 11b detects the dust concentration in the air after the dust is removed. The detection signals of the particle sensor 11a and the particle sensor 11b are output to the cooperation control unit 25 described later.

The air conditioner further includes a linkage control unit 25 that links the operation of the dust collection device 1 and the heat exchange ventilator 10. The cooperation control unit 25 is electrically connected to each of the dust collection device 1 and the heat exchange ventilator 10. Moreover, the cooperation control part 25 controls the operation | movement of the dust collection device 1 and the heat exchange ventilation apparatus 10 based on the detection signal from the particle sensor 11a and the particle sensor 11b. The cooperation control unit 25 can be configured by hardware such as a circuit device that realizes the function, or can be configured by an arithmetic device such as a microcomputer or a CPU and software executed thereon. .

FIG. 2 is a perspective view of the dust collection device according to Embodiment 1 of the present invention. FIG. 3 is a perspective view of the brush of FIG.
The dust collection device 1 has a configuration in which a plurality of collection plates 2 to be rotated, a plurality of brushes 3, and a dust box 4 are housed in a housing 15. The housing 15 has a suction port 13 and a discharge port 14, and an air passage 16 through which air sucked from the suction port 13 is exhausted from the discharge port 14 is formed in the housing 15. Since the dust collecting device 1 is provided in the air supply air passage 30 as shown in FIG. 1, the outdoor air flowing in from the outdoor air supply port 21 passes therethrough.

The collection plate 2 is, for example, a circular plastic plate of PP (Poly Propylene) having a thickness of 1 mm, for example, a diameter of 300 mm, and having a negative triboelectric charge tendency. A plurality of the collecting plates 2 are arranged at intervals of, for example, 3 mm in a direction intersecting with the passage direction of the outdoor air in the housing 15, and are combined by the first shaft 8 penetrating the central portion of the collecting plate 2. Are integrated.

The brush 3 rubs the surface of the collecting plate 2 to charge the surface of the collecting plate 2 with static electricity, and wipes off dust collected by the collecting plate 2. The brush 3 has a configuration in which, for example, a non-woven fabric 3b made of PA6 (Polyamide6) fiber having a positive triboelectric charging tendency is attached to a rectangular support plate 3a made of aluminum having a thickness of 1 mm, for example. Two mounting holes 3c are formed in the support plate 3a, and the second shaft 9 is inserted into each mounting hole 3c so that the brushes 3 are coupled and fixed so as not to move.

The brush 3 is inserted into the gap between the collecting plates 2 so that the nonwoven fabric 3b contacts the surface of the collecting plate 2, and is disposed on the downstream side of the collecting plate 2. Moreover, the brush 3 is arrange | positioned between the collection boards 2 with the attitude | position along the passage direction of outdoor air so that the ventilation resistance with respect to the outdoor air which passes the inside of the housing | casing 15 may decrease. In this example, the brush 3 is arranged in a horizontal posture. Arranging the brush 3 in this way is effective in reducing the ventilation resistance. Each brush 3 is all connected to ground.

In the housing 15, below the brush 3, a dust box 4 that collects an aggregate 17 that is a lump of dust or the like that adheres to the collecting plate 2 and is removed by the brush 3 is disposed.

A first baffle material 18 and a second baffle material 19 are further arranged in the housing 15 so as to face each other with the collection plate 2 interposed therebetween. The first baffle material 18 and the second baffle material 19 rectify so that outdoor air that has flowed into the housing 15 passes through the collection plate 2. The first baffle material 18 is disposed on the inner surface side of the upper surface 15 a of the housing 15 and has a surface shape along the outer peripheral surface of the collection plate 2. The second baffle material 19 is disposed on the inner surface side of the lower surface 15b of the housing 15 and has a flat surface shape. Further, the second baffle material 19 serves to prevent rattling noise caused by air colliding with the dust box 4 and to prevent dust collected in the dust box 4 from rising due to the inflow of air into the dust box 4. Also bears. For this reason, it is desirable that the arrangement position of the second baffle material 19 is equal to or higher than the tip portion 4 a of the dust box 4.

Further, the dust collection device 1 includes a motor 6 and a drive control unit 7 that controls the motor 6 outside the casing 15. The motor 6 is connected to the first shaft 8 via a gear, and the first shaft 8 is rotated by the rotation of the motor 6. When the first shaft 8 rotates, the collecting plate 2 fixed to the first shaft 8 also rotates.

Next, the operation of the dust collection device 1 according to Embodiment 1 of the present invention will be described.
When the dust collecting device 1 is operated for the first time or after being stopped for a long period of one month or longer, a frictional charging operation for charging static electricity on the surface of the collecting plate 2 is performed. That is, the collection plate 2 is rotated by a command from the drive control unit 7 of the dust collection device 1 to the motor 6. Here, the collection plate 2 is rotated forward (rotation in the direction of arrow 12 in FIG. 2) for 20 seconds at a speed of 1 rpm. When the collection plate 2 rotates and the surface of the collection plate 2 rubs against the brush 3, negative static electricity is generated on the surface of the collection plate 2. When the rotation of the collecting plate 2 is stopped, the frictional charging is completed, and the frictional charging operation is finished. The collection plate 2 may be rotated so that static electricity is generated, and the rotation speed and rotation time shown here are merely examples, and these may be set as appropriate according to actual use conditions and the like. good.

When the outdoor air is taken into the dust collection device 1 after the friction charging operation, the outdoor air is rectified by the first baffle material 18 and the second baffle material 19 and passes through the central portion between the collection plates 2. . When outdoor air passes between the collection plates 2, dust 5 in the outdoor air is collected on the surface of the collection plate 2 by static electricity generated on the surface of the collection plate 2.

Here, since the brush 3 is disposed between the collection plates 2 in a posture along the air passage direction, for example, in a posture parallel to the air passage direction, the flow of outdoor air passing between the collection plates 2 Ventilation resistance is small. Therefore, high dust collection performance can be obtained.

Also, as the operation of the dust collecting device 1, there are automatic surface cleaning and automatic recharging operation (hereinafter referred to as cleaning and charging operation) of the collecting plate 2. In the cleaning and charging operation, first, as in the initial friction charging operation described above, the collection plate 2 is rotated forward at a speed of 1 rpm for 20 seconds in accordance with a command from the drive control unit 7 of the dust collection device 1 to the motor 6. Let As the collecting plate 2 rotates and the surface of the collecting plate 2 rubs against the brush 3, dust attached to the surface of the collecting plate 2 is removed by the brush 3, and the collecting plate 2 is frictionally charged. That is, both the dust that has adhered and the frictional charging of the collecting plate 2 are performed by the rotation of the collecting plate 2. In addition, a part of the dust adheres to the lower part of the brush 3 as an aggregate 17, and when the aggregate 17 becomes a certain size or more, it falls down due to gravity, and enters the dust box 4 provided at the lower part of the brush 3. Collected.

Further, in the cleaning and charging operation, in order to remove the aggregate 17 clogged between the collecting plate 2 and the brush 3, the collecting plate 2 is rotated halfway in the reverse direction at a speed of 1 rpm (hereinafter referred to as reverse half-rotation). ) Due to the reverse half rotation of the collection plate 2, a downward frictional force is applied to the aggregate 17 clogged between the collection plate 2 and the brush 3, and the aggregate 17 falls and is collected in the dust box 4.

The rotation speed and rotation time of the collection plate 2 in the above cleaning and charging operation are merely examples, and these may be set as appropriate according to actual use conditions.

FIG. 4 is a flowchart for explaining the operation of the air conditioner equipped with the dust collection device according to Embodiment 1 of the present invention. Hereinafter, the operation of the air conditioner will be described with reference to FIG.
When the above-described initial frictional charging operation of the dust collection device 1 is necessary (step S1), the cooperation control unit 25 stops the fan (not shown) of the heat exchange ventilator 10 and stops the drive control unit 7. To perform the initial friction charging operation described above (step S2). When the initial frictional charging operation is completed, ventilation is started. That is, the cooperation control part 25 operates the fan (not shown) of the heat exchange ventilation apparatus 10 (step S3). Thereby, the outdoor air taken in from the outdoor passes through the dust collecting device 1 and the dust in the outdoor air is removed. The air from which the dust has been removed is supplied to the heat exchange ventilator 10. The outdoor air supplied to the heat exchanging ventilator 10 exchanges heat with the indoor air flowing into the heat exchanging ventilator 10 through the indoor exhaust port 24 to recover heat, and is supplied indoors from the indoor air supply port 23. .

The cooperation control unit 25 checks a decrease in the dust collection performance of the dust collection device 1 based on detection signals from the particle sensor 11a and the particle sensor 11b arranged in the dust collection device 1 (step S4). . And the cooperation control part 25 will stop the fan (not shown) of the heat exchange ventilation apparatus 10, if the fall of the dust collection performance of the dust collection device 1 is detected based on each detection signal (step S5). In this way, the dust collection device 1 is caused to perform the cleaning and charging operation with the air flow stopped (step S6). When the dust collecting performance of the collecting plate 2 is restored by the cleaning and charging operation, the collecting plate 2 collects dust again. The operations in steps S3 to S6 are repeated until the operation of the air conditioner is stopped.

In addition, what is necessary is just to perform the detection of the fall of the dust collection performance of the dust collection device 1 based on the detection signal from the particle sensor 11a and the particle sensor 11b as follows, for example. What is necessary is just to judge that the dust collection performance of the dust collection device 1 falls when the difference of the dust density before and behind passage of the dust collection device 1 becomes below a preset density.

As described above, according to the first embodiment, the brush 3 of the dust collection device 1 is inserted between the collection plates 2 in a posture along the air passage direction. Thereby, the dust collection device 1 with low ventilation resistance and high dust collection performance is realizable. The “posture along the air passage direction” is a rotation angle about the axis about the arrangement direction of the collecting plates 2, and from −45 ° when the air passage direction is 0 °. A posture within an angle range of + 45 ° is applicable. If it is in this angle range, it is effective in the fall of ventilation resistance enough, and the dust collection device 1 with high dust collection performance is realizable. FIG. 2 shows an example in which the posture of the brush 3 is a rotation angle of 0 °.

Further, the first baffle material 18 and the second baffle material 19 are arranged opposite to each other with the collection plate 2 interposed therebetween, and the air in the air passage 16 is rectified so as to flow through the central portion of the collection plate 2. Therefore, the dust collection device 1 having high dust collection performance can be realized. In addition, the shape of the 1st baffle material 18 and the 2nd baffle material 19 should just rectify | straighten so that air may flow through the center part of the collection board 2, and is not limited to the shape shown in FIG.

In the first embodiment, an example in which the collecting plate 2 is negatively charged has been described. However, the fiber of the collecting plate 2 is PA6 or the friction body material of the collecting plate 2 has a negative charge tendency. The collection plate 2 may be positively charged by using strong PTFE.

Further, in Embodiment 1, the example in which the fibers of the brush 3 are PA6 fibers has been shown, but PAN (Polyacrylonitrile) fibers or the like may be used. In order to suppress charging saturation of the brush 3, it is preferable that the friction body has high conductivity, and conductivity may be imparted by using a material to which carbon is imparted to the material. Further, the brush 3 may have a brush shape, a sponge shape, a plate shape, or the like other than the non-woven fabric shape.

Moreover, in Embodiment 1, although the brush 3 showed the structure inserted in the space | interval of the collection board 2 toward the upstream from the downstream of the collection board 2, it showed from the upstream of the collection board 2 to the downstream. It is good also as a structure inserted in the space | interval of the direction collection board 2. FIG. In the case of this configuration, the dust box 4 may be similarly disposed below the brush 3.

Embodiment 2. FIG.
In the first embodiment, the timing for cleaning and charging the dust collection device 1 is controlled based on the detection signal of the particle sensor. However, in the second embodiment, the timing is controlled by a timer. The dust collection device 1 according to the second embodiment is basically configured in the same manner as the dust collection device 1 according to the first embodiment, but differs from the first embodiment in that a timer is provided. Hereinafter, the second embodiment will be described mainly with respect to differences from the first embodiment, and the configuration that is not described in the second embodiment is the same as that of the first embodiment.

FIG. 5 is a perspective view showing the configuration of the dust collection device according to Embodiment 2 of the present invention.
As shown in FIG. 5, the dust collection device 1 according to the second embodiment includes a timer 50. The timer 50 is provided outside the housing 15 and is connected to the motor 6 and the drive control unit 7. The timer 50 outputs a signal to the drive control unit 7 when a preset set time has elapsed since the start of counting.

FIG. 6 is a flowchart for explaining the operation of the air conditioner including the dust collection device according to Embodiment 2 of the present invention. Hereinafter, the operation of the air conditioner will be described with reference to FIG. In addition, the same step number is shown about the process similar to Embodiment 1 shown in FIG. Hereinafter, the operation different from the first embodiment will be mainly described.

In the second embodiment, the timer 50 starts counting immediately after the initial frictional charging operation (step S11). From the start of counting until a preset time (for example, 24 hours in this case) elapses, the fan of the heat exchange ventilator 10 is operated to continue ventilation (steps S12 and S3). Then, when 24 hours have elapsed from the start of counting (step S12), a signal is output from the timer 50, and when the drive control unit 7 receives the signal, the drive control unit 7 stops the fan of the heat exchange ventilator 10 ( Step S5). Thereafter, the drive control unit 7 drives the motor 6 to perform cleaning and charging (step S6). Then, the process returns to step S11, and the timer 50 starts counting again. Accordingly, the cleaning and charging operation is repeated every 24 hours until the operation of the air conditioner is stopped.

As described above, according to the second embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained. That is, since the timing for cleaning and charging is controlled by the timer 50, expensive equipment such as a particle sensor is not required as in the first embodiment. Therefore, the dust collection device 1 that can maintain the performance for a long time can be realized at low cost.

In the second embodiment, the set time of the timer 50 is set to 24 hours. However, the set time may be appropriately determined according to the outside air environment to be used. If the outside air dust concentration is high, the interval may be shorter than 24 hours, and if the outside air dust concentration is low, the interval may be longer than 24 hours.

Embodiment 3 FIG.
The third embodiment relates to a dust collection device 1 in which the motor sound is always quiet. The dust collection device 1 according to the third embodiment is basically the same configuration as the dust collection device 1 according to the first embodiment, but differs from the first embodiment in that a load sensor is provided. In the following, the third embodiment will be described with a focus on differences from the first embodiment, and configurations not described in the third embodiment are the same as those in the first embodiment.

FIG. 7 is a perspective view showing the configuration of the dust collection device according to Embodiment 3 of the present invention.
As shown in FIG. 7, the dust collection device 1 of Embodiment 3 includes a load sensor 51 that measures the load of the motor 6. The load sensor 51 is composed of a current measuring element that measures the current flowing through the motor 6. The load sensor 51 is provided outside the housing 15 and is connected to the motor 6 and the drive control unit 7. Although the current measuring element is used here as the load sensor 51 that measures the load of the motor 6, a torque sensor that detects the torque of the motor 6 may be used.

FIG. 8 is a flowchart illustrating the operation of the air conditioner including the dust collection device according to Embodiment 3 of the present invention. Hereinafter, the operation of the air conditioner will be described with reference to FIG. In addition, the same step number is shown about the process similar to Embodiment 1 shown in FIG. Hereinafter, the operation different from the first embodiment will be mainly described.

Due to repeated use of the dust collecting device 1, the agglomerates 17 are slightly clogged between the collecting plate 2 and the brush 3 even when automatic surface cleaning is performed. When the aggregate 17 is clogged between the collecting plate 2 and the brush 3, the aggregate 17 becomes resistance during rotation of the collecting plate 2, the current value of the motor 6 gradually increases, and the motor sound increases.

The load sensor 51 measures the load of the motor 6, and when the measured load is equal to or higher than a preset set load (step S <b> 21), the drive control unit 7 collects an operation for eliminating the clogging of the aggregate 17. The board 2 is made to perform (step S22). Specifically, the load sensor 51 measures the value of the current flowing through the motor 6, and when the measured value increases by, for example, 1.2 times or more compared to the initial value, the drive control unit 7 The operation of eliminating the clogging 17 is performed.

As an operation for eliminating the clogging of the aggregate 17, the drive control unit 7 rotates the collection plate 2 in the reverse half, drops the clogged aggregate 17 between the collection plate 2 and the brush 3, and then collects the collection plate 2. The plate 2 is rotated forward by a quarter. The drive control unit 7 repeats the operation of eliminating the clogging of the aggregates 17 until the clogging is eliminated (Steps S22 and S23). Specifically, the reverse half rotation and the quarter forward rotation of the collection plate 2 are alternately repeated until the current value measured by the load sensor 51 decreases to a value equivalent to the initial value.

When the clogging of the aggregates 17 is resolved, the process returns to step S3, and the cooperation control unit 25 operates the fan of the heat exchange ventilator 10 and starts ventilation again.

As described above, according to the third embodiment, the same effects as in the first embodiment can be obtained, and the following effects can be obtained. That is, when clogging of the aggregates 17 is detected based on the measurement load of the load sensor 51, the collecting plate 2 is caused to perform an operation for eliminating the clogging of the aggregates 17 and the clogging of the aggregates 17 is eliminated. Thereby, it is possible to realize the dust collection device 1 in which the motor sound is always quiet.

In the third embodiment, the case where the current value of the motor 6 is increased by 1.2 times or more as compared with the initial value is given as a trigger for starting the operation of eliminating the clogging of the aggregate 17. It is not what was given. The threshold value of the current value used as a trigger may be appropriately determined according to the characteristics of the motor used.

Moreover, although the example which repeats the reverse half rotation of the collection board 2 and a quarter forward rotation alternately was shown as operation | movement which eliminates clogging of the aggregate 17, these rotation amounts are an example to the last. Rotation in the reverse direction and rotation in the forward direction may be repeated alternately. In addition, as an operation for eliminating the clogging of the aggregate 17, for example, an operation of continuously applying the reverse rotation drive to the collection plate 2 until the current value of the motor 6 falls below a threshold value may be used. The operation for eliminating the clogging of the aggregate 17 may be any operation different from at least the cleaning and charging operation.

Embodiment 4 FIG.
The dust collection device 1 according to the fourth embodiment basically has the same configuration as the dust collection device 1 according to the first embodiment, but differs in that an air filter is provided. In the following, the fourth embodiment will be described mainly with respect to differences from the first embodiment, and configurations not described in the fourth embodiment are the same as those in the first embodiment.

FIG. 9 is a perspective view showing the configuration of the dust collection device according to Embodiment 4 of the present invention. As shown in FIG. 9, the dust collection device 1 of the fourth embodiment includes an air filter 52 that collects dust on the downstream side of the housing 15.

Here, as the air filter 52, a HEPA filter obtained by molding a PP meltblown charged non-woven fabric into a pleated shape is used. The HEPA filter has a high fiber density and a high dust collection rate.

By providing the air filter 52 on the downstream side of the housing 15 in this way, the air from which dust in the air has been removed by the collection plate 2 can be further purified, and high dust collection performance can be obtained. Can do.

As described above, according to the fourth embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained. That is, the air from which dust or the like in the air has been removed by the dust collection device 1 can be further purified by the air filter 52, and high dust collection performance can be obtained.

In addition, since the HEPA filter used as the air filter 52 has a high fiber density and is clogged relatively quickly due to collected dust and pressure loss increases, maintenance (filter replacement) every several months is recommended. In other words, the dust collection device 1 according to the fourth embodiment is configured to include the collection plate 2 upstream of the HEPA filter. For this reason, the dust load to the HEPA filter can be reduced by removing the dust upstream of the HEPA filter. As a result, the increase in pressure loss due to clogging of the HEPA filter is moderated. For this reason, the maintenance period of the HEPA filter can be improved, and high dust collection performance and long life dust collection can be achieved.

As described above, the respective embodiments 1 to 4 have been described as different embodiments. However, the dust collection device may be configured by appropriately combining the characteristic configurations of the embodiments. For example, the second embodiment and the third embodiment may be combined, and the load sensor 51 may be further added to the configuration of FIG. Further, for example, the second embodiment and the fourth embodiment may be combined, and a configuration in which an air filter 52 is further added to the configuration of FIG.

1 dust collecting device, 2 collecting plate, 3 brush, 3a support plate, 3b non-woven fabric, 3c mounting hole, 4 dust box, 4a tip, 5 dust, 6 motor, 7 drive control unit, 8 1st shaft, 9 2nd Shaft, 10 Heat exchange ventilator, 11a particle sensor, 11b particle sensor, 12 arrow, 13 inlet, 14 outlet, 15 housing, 15a upper surface, 15b lower surface, 16 air passages, 17 aggregate, 18 first baffle material , 19 2nd baffle material, 20 ceiling, 21 outdoor air inlet, 22 outdoor air outlet, 23 indoor air outlet, 24 indoor air inlet, 25 linkage control unit, 30 air supply air passage, 31 duct, 40 exhaust air passage, 41 duct, 50 timer, 51 load sensor, 52 air filter.

Claims

A plurality of collecting plates arranged at intervals in a direction intersecting the air passage direction in an air passage through which air passes, and charged by friction;
A plurality of brushes that are inserted and arranged in a gap through which the air passes between the collecting plates, rub against the surface of the collecting plates, and remove dust collected by the collecting plates;
The dust collecting device, wherein the brush is inserted into the gap between the collecting plates in a posture along the air passing direction.
The brush has a rotational angle about an axis about the arrangement direction of the collecting plates, and is arranged in an attitude within an angle range of −45 ° to + 45 ° when the air passage direction is 0 °. The dust collection device according to claim 1.
The 1st baffle material and 2nd baffle material which are arrange | positioned so that it may oppose on both sides of the said collection board, and rectify | straighten so that the air in the said air path may pass through the said collection board. 2. The dust collecting device according to 2.
The dust collection device according to any one of claims 1 to 3, further comprising an air filter downstream of the collection plate.
A motor that rotates the collecting plate to cause friction between the collecting plate and the brush;
A drive control unit that controls the motor and rotates the collection plate;
5. The drive control unit according to claim 1, wherein the drive control unit rotates the collection plate, and frictionally charges the collection plate by the rotation to collect dust in the air. Dust collection device.
The drive control unit rotates the collecting plate, removes dust attached to the collecting plate by friction with the brush, charges the surface of the collecting plate, and then reverses the collecting plate. The dust collecting device according to claim 5, wherein the dust collecting device performs a cleaning and charging operation of rotating and removing dust in a gap between the collecting plates.
With a timer that outputs a signal when a preset time has elapsed,
The dust collection device according to claim 6, wherein the drive control unit performs the cleaning and charging operation when the timer outputs the signal.
A load sensor for measuring the load of the motor;
The drive control unit is an operation different from the cleaning and charging operation when the measured load measured by the load sensor is equal to or higher than a preset set load, and is between the collecting plate and the brush. The dust collecting device according to claim 6, wherein the dust collecting device is configured to cause the collecting plate to perform an operation for eliminating clogging of dust.
The dust collection device according to claim 8, wherein the load sensor is a current measuring element that measures a current flowing through the motor or a torque sensor that detects a torque of the motor.
An air conditioner comprising the dust collection device according to any one of claims 1 to 9.