WO2020250264A1

WO2020250264A1 - Dust collecting device, air conditioner equipped with dust collecting device, and method for manufacturing dust collecting device

Info

Publication number: WO2020250264A1
Application number: PCT/JP2019/022861
Authority: WO
Inventors: 保博中村; 彰則清水; 政郎弓削; 昇和田
Original assignee: 三菱電機株式会社
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-12-17
Also published as: JP6618666B1; JPWO2020250264A1; CN113939369A; CN113939369B

Abstract

A dust collecting device according to the present invention comprises: a plurality of trapper plates that are disposed in a row, with gaps therebetween, in a direction intersecting the direction of the passage of air in an air passage through which air passes, and are electrically charged by friction; a plurality of brushes having brush parts that create friction on the surfaces of the trapper plates; and a dust clog preventing device that is disposed in front of the brushes in a direction in which the brushes advance toward the trapper plates when the trapper plates and the brushes move relative to each other, and that removes dust trapped by the trapper plates from the trapper plates.

Description

Dust collectors and air conditioners equipped with dust collectors and methods for manufacturing dust collectors

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

Conventionally, there is a dust collecting device that generates static electricity and collects dust in the air. As this type of dust collecting device, a plurality of collecting plates arranged at intervals in a direction intersecting the air passing direction are inserted into a gap between the collecting plates and come into contact with the surface of the collecting plates. Some are provided with brushes arranged in such a manner (see, for example, Patent Document 1). This dust collecting device rotates the collecting plate, relatively moves the brush and the collecting plate, and rubs the collecting plate to generate static electricity on the surface of the collecting plate. It electrostatically collects dust contained in the air passing between them. Then, the brush of the dust collecting device scrapes off the dust collected by the collecting plate.

Japanese Unexamined Patent Publication No. 61-227860

In the dust collecting device of Patent Document 1, the dust collected on the surface of the collecting plate and the triboelectric charging on the surface of the collecting plate are simultaneously performed by the same brush. For this reason, if dust that could not be scraped off is clogged between the collection plate and the brush, the load on the drive unit such as the motor becomes excessive, and the moving speed of the collection plate decreases. Therefore, the triboelectric charge amount and the dust collecting performance may be lowered.

In order to solve the above problems, the present invention provides a dust collecting device and an air conditioner and a dust collecting device equipped with a dust collecting device capable of suppressing clogging of dust between the collecting plate and the brush. The purpose is to provide a manufacturing method.

The dust collecting device according to the present invention is arranged in an air passage through which air passes at intervals in a direction intersecting the air passing direction, and has a plurality of collecting plates charged by friction and the surface of the collecting plate. Dust collected by a plurality of brushes having a rubbing brush portion and a collection plate installed in front of the brush in the traveling direction of the brush with respect to the collection plate when the collection plate and the brush move relative to each other. It is provided with a dust clogging prevention device for removing air from the collection plate.

Further, the air conditioner according to the present invention is equipped with the above-mentioned dust collecting device.

Further, the method for manufacturing a dust collecting device according to the present invention includes a plurality of collecting plates that are charged by friction and collect dust, a plurality of brushes having a brush portion that rubs the surface of the collecting plate, and a collecting plate. In a dust collecting device equipped with a dust clogging prevention device that removes adhering dust, a process of installing a brush part having a thickness protruding toward the collection plate side from the dust clogging prevention device on the brush and collecting the brush part. It has a step of pressing against a plate to adjust the distance relationship between the brush portion and the dust clogging prevention device and the collection plate.

According to the present invention, before the dust collected by the collection plate passes between the collection plate and the brush portion, a dust clogging prevention device for removing the dust is provided between the collection plate and the brush. It is possible to suppress the clogging of dust and the decrease in the moving speed of the collection plate due to the overload of the motor or the like. Therefore, it is possible to realize a dust collecting device having a stable triboelectric charge amount and dust collecting performance.

It is a figure which shows the outline of the air conditioner equipped with the dust collecting device which concerns on Embodiment 1. FIG. It is a perspective view of the dust collecting device which concerns on Embodiment 1. FIG. It is a perspective view explaining the structure of the brush and the collecting plate which the dust collecting device which concerns on Embodiment 1 has. It is a figure which shows the relationship between the brush and the collecting plate which the dust collecting device which concerns on Embodiment 1 has. It is a figure explaining the effect in the 1st dust clogging prevention part 53 of the dust collecting device which concerns on Embodiment 1. FIG. It is a figure which shows the flowchart explaining the operation of the dust collecting device 1 which concerns on Embodiment 1. FIG. It is a perspective view explaining the structure of the brush and the collection plate which the dust collection device which concerns on Embodiment 2 has. It is a figure explaining the reverse rotation of the collection plate 2 in the dust collection device 1 of Embodiment 2. It is a perspective view explaining the structure of the brush and the collection plate which the dust collection device which concerns on Embodiment 3 has. It is a perspective view explaining the structure of the brush and the collection plate which the dust collection device which concerns on Embodiment 4 has. It is a perspective view which shows the structure of the dust collecting device which concerns on Embodiment 5.

Hereinafter, the dust collector and the air conditioner according to the embodiment will be described with reference to the attached drawings and the like. In the following drawings, those having the same reference numerals are the same or equivalent thereof, and are common to all the texts of the embodiments described below. The form of the component represented in the entire specification is merely an example, and is not limited to the form described in the specification. In particular, the combination of components is not limited to the combination in each embodiment, and the components described in other embodiments can be applied to other embodiments. Further, in the following description, the upper side in the figure will be referred to as "upper side" and the lower side will be referred to as "lower side". Further, for ease of understanding, directional terms (eg, "right", "left", "front", "rear", etc.) are used as appropriate, but they are for illustration purposes only. It is not limited by terms. In addition, the high and low humidity and temperature are not fixed in relation to the absolute values, but are relatively fixed in terms of the state and operation of the device and the like. Then, in the drawings, the relationship between the sizes of the constituent members may differ from the actual one.

Embodiment 1.
Here, the dust collecting device according to the first embodiment and the air conditioner equipped with the dust collecting device will be described with reference to FIGS. 1 to 6. FIG. 1 is a diagram showing an outline of an air conditioner equipped with a dust collector according to the first embodiment. Here, the white arrows shown in FIG. 1 and each figure described later indicate the flow of air.

The air conditioner of the first embodiment includes a dust collecting device 1 and a heat exchange ventilation device 10. The air conditioner is housed in the descending ceiling 20 in the room of the house. As shown in FIG. 1, the descending ceiling 20 refers to an area in which a part of the ceiling is lowered. From the viewpoint of indoor aesthetics, there are many houses in which an air conditioner and other air conditioners are collectively stored in the lowered ceiling 20 as shown in FIG. When the lowered ceiling 20 is used as the installation space for the air conditioner, a large installation space can be generally secured as compared with the case where the air conditioner is installed indoors.

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

Then, in the air supply air passage 30, the dust collecting device 1 and the heat exchange ventilation device 10 are arranged in order from the upstream side. Further, a heat exchange ventilation device 10 is arranged 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 via a dust collecting device 1 and a heat exchange ventilation device 10. Further, in the exhaust air passage 40, the indoor exhaust port 24 and the outdoor exhaust port 22 are connected by a duct 41 via a heat exchange ventilation device 10.

The heat exchange ventilation device 10 is a ventilation device 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 exchange ventilation device 10 includes a fan (not shown) that blows air from the outside to the inside of the air supply air passage 30 and an exhaust air passage 40 from the inside to the outside. It has a fan (not shown) that blows air.

The air-conditioning assist function is a function that assists the air-conditioning operation of equipment that adjusts the room temperature, such as an air conditioner, by recovering heat from the exhausted indoor air and giving the recovered heat to the air to be supplied. .. The air conditioning auxiliary function can be said to be an energy saving function because it is a function that reduces the energy burden on the equipment. As a configuration for realizing this air conditioning assist function, the heat exchange ventilation device 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 air supply air passage 30.

The dust collecting device 1 is a device that collects dust in the 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 according to the first embodiment will be described below. Further, particle sensors 11a and particle sensors 11b for detecting the dust concentration of the passing air are provided at positions on the upstream side and the downstream side of the dust collecting device 1 with respect to the air flow, respectively. The particle sensor 11a on the upstream side detects the dust concentration in the outdoor air. Further, the particle sensor 11b on the downstream side detects the dust concentration in the air after removing the dust. 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 cooperative control unit 25 that links the operation of the dust collecting device 1 and the heat exchange ventilation device 10. The cooperative control unit 25 of the first embodiment is electrically connected to the dust collecting device 1 and the heat exchange ventilation device 10 via communication lines, respectively. Further, the cooperative control unit 25 controls the operation of the dust collecting device 1 and the heat exchange ventilation device 10 based on the detection signals from the particle sensor 11a and the particle sensor 11b. The cooperative control unit 25 can be configured with hardware such as a circuit device that realizes a control function. Further, the cooperation control unit 25 can be configured by an arithmetic unit having a microcomputer or the like that executes software having a predetermined procedure.

FIG. 2 is a perspective view of the dust collecting device according to the first embodiment. Further, FIG. 3 is a perspective view illustrating the configuration of the brush and the collecting plate included in the dust collecting device according to the first embodiment. FIG. 3 shows an extraction of a pair of collection plates 2 and a brush 3. Further, FIG. 4 is a diagram showing the relationship between the brush and the collecting plate of the dust collecting device according to the first embodiment. The dust collecting device 1 has a configuration in which a plurality of rotationally driven collecting plates 2, a plurality of brushes 3, and a dust box 4 are housed in a housing 15. Here, the arrow 12 indicates the forward rotation direction of the collection plate 2.

The housing 15 has a suction port 14a and a discharge port 14b. An air passage 16 is formed in the housing 15 in which the air sucked from the suction port 14a is exhausted from the discharge port 14b. As shown in FIG. 1, the dust collecting device 1 is provided in the air supply air passage 30 of the air conditioner. Therefore, the outdoor air flowing in from the outdoor air supply port 21 passes through the dust collecting device 1.

The collection plate 2 is, for example, a circular plastic plate of PP (Poly Propyrene) having a thickness of 1 mm, a diameter of 300 mm, and a negative triboelectric tendency. However, the material of the collecting plate 2 is not limited to PP, and may be, for example, a resin material such as vinyl chloride or PTFE (Poly Terra Fluoro Ethylene). A plurality of collection plates 2 are arranged in a direction intersecting the passage direction of outdoor air in the housing 15, at intervals of, for example, 3 mm, and are connected by a first shaft 8 penetrating the central portion of the collection plate 2. And the whole is integrated.

The brush 3 rubs the surface of the collection plate 2, charges the surface of the collection plate 2 with static electricity, and scrapes off the dust collected by the collection plate 2. The brush 3 is configured by, for example, attaching a brush portion 3b which is a non-woven fabric of PA6 (Polyamide 6) fiber having a positive triboelectric tendency to a rectangular connecting portion 3a of aluminum having a thickness of 1 mm. .. The brush portion 3b is supported by the connecting portion 3a and becomes a friction body that comes into contact with the surface of the collecting plate 2 and rubs against it. Further, the brush portion 3b scrapes off the dust of the collecting plate 2. The material of the brush portion 3b is not limited to PA6 fiber, and for example, nylon, cotton, PAN (Polyacrylonitrile) fiber, or the like may be used.

As shown in FIG. 3, two mounting holes are formed in the connecting portion 3a of the brush 3, a second shaft 9 is inserted into each mounting hole, and each brush 3 is connected and fixed. Here, it is desirable that the fibers of the non-woven fabric in the brush portion 3b serving as the friction body have conductivity by being mixed with carbon, metal and the like. Further, the brush portion 3b may have a brush shape, a sponge shape, a plate shape, or the like, in addition to the non-woven fabric shape. Here, an example in which the collecting plate 2 is negatively charged is shown, but the material of the collecting plate 2 is PA6, or PTFE having a strong negative charging tendency is used as the material of the friction body of the collecting plate 2. The collection plate 2 may be positively charged.

Further, the brush 3 of the first embodiment is provided with a first dust clogging prevention unit 53, which is a dust clogging prevention device, at the lower part of the brush 3. The first dust clogging prevention unit 53 of the first embodiment is a plate made of aluminum, which is directed in the direction perpendicular to the surface of the collection plate 2 and is attached close to the collection plate 2. The first dust clogging prevention portion 53 of the first embodiment is integrated with the connecting portion 3a of the brush 3. The lower part of the brush 3 is on the front side in the traveling direction when the brush 3 moves relative to the collecting plate 2 by rotating the collecting plate 2 in the forward rotation direction. Therefore, the first dust clogging prevention unit 53 wipes off and removes the dust collected by the collection plate 2 before passing through the brush unit 3b on the front side in the traveling direction of the brush 3 in the traveling direction. Can be done.

The brush 3 is inserted into the gap between the collection plates 2 so that the brush portion 3b comes into contact with the surface of the collection plate 2, and is arranged on the downstream side of the collection plate 2. Further, a pressure member 57 such as a resin ring-shaped spacer is provided between the connecting portions 3a so that the brush portion 3b of the brush 3 is pressed against the collecting plate 2 and comes into contact with the second shaft. It is installed so that 9 can pass through.

Further, the brush 3 is arranged between the collection plates 2 in a posture along the passing direction of the outdoor air so that the ventilation resistance to the outdoor air passing through the housing 15 is reduced. In this example, the brush 3 is arranged in a horizontal position. By arranging the brush 3 in this way, it is effective in reducing the ventilation resistance. Further, each brush 3 is connected to the ground. Here, the brush 3 comes into contact with a part of the collection plate 2, and the rotation of the collection plate 2 causes the brush 3 to move relative to the collection plate 2 so that the collection plate 2 It is a structure that can be in contact with the whole. In order for the brush 3 and the first dust clogging prevention unit 53 to achieve both triboelectric charging and cleaning of the collection plate 2, both the brush 3 and the first dust clogging prevention unit 53 pressurize the pressurizing member 57. While being done, it is necessary to firmly contact or approach the collection plate 2.

FIG. 4 is a diagram showing a pair of collection plate 2 and brush 3 extracted. Here, the manufacturing method of the dust collecting device 1 of the first embodiment will be described. At the time of manufacturing the dust collecting device 1 of the first embodiment, as shown in FIG. 4A, a brush portion 3b having a thickness protruding toward the collecting plate 2 side from the first dust clogging prevention portion 53 is provided. The step of installing the brush 3 at the connecting portion 3a is performed. Then, as shown in FIG. 4B, the brush portion 3b is pressed against the collection plate 2 by applying pressure in the direction of the white arrow to crush the brush portion 3b. By crushing the brush portion 3b, not only the protruding brush portion 3b but also the first dust clogging prevention portion 53 is brought close to the collection plate 2, and the brush portion 3b, the first dust clogging prevention portion 53, and the collection plate 2 are combined. Adjust the distance relationship of. In the dust collecting device 1 of the first embodiment, the brush portion 3b is pressed against the collecting plate 2 in the same manner for the plurality of brushes 3 included in the dust collecting device 1, and the brush portion 3b which is a non-woven fabric is crushed. The contact and pressure with the collection plate 2 are adjusted.

As shown in FIG. 2, in the housing 15, a dust box 4 is arranged below the brush 3 to collect agglomerates 17 which are lumps such as dust adhering to the collecting plate 2 and removed by the brush 3. Has been done. Further, in the housing 15, the first baffle material 18 and the second baffle material 19 are further arranged so as to face each other with the collecting plate 2 interposed therebetween. The first baffle material 18 and the second baffle material 19 rectify the outdoor air that has flowed into the housing 15 so as to pass through the collection plate 2. The first baffle material 18 is arranged on the inner surface side of the upper surface 15a of the housing 15. The second baffle material 19 is arranged on the inner surface side of the lower surface 15b of the housing 15.

Further, the dust collecting device 1 includes a motor 6 and a drive control unit 7 that controls the motor 6 outside the housing 15. The motor 6 is connected to the first shaft 8 via a gear, and the rotation of the motor 6 causes the first shaft 8 to rotate. When the first shaft 8 rotates, the collection plate 2 fixed to the first shaft 8 rotates. Further, the drive control unit 7 controls each device included in the dust collecting device 1. The drive control unit 7 has a microcomputer or the like, and performs processing related to control of the device based on a predetermined procedure. Further, the drive control unit 7 has an energization control device (not shown) that controls energization of the motor 6, and can adjust the rotation speed of the motor 6.

Next, the operation of the dust collecting device 1 according to the first embodiment of the present invention will be described. When the dust collecting device 1 is to be operated for the first time or after being stopped for a long period of one month or more, a triboelectric charging operation for charging the surface of the collecting plate 2 with static electricity is performed. At this time, the drive control unit 7 of the dust collecting device 1 issues a command to the motor 6 to rotate the collecting plate 2. Here, the collection plate 2 is rotated at a speed of 1 [rpm] for 20 seconds in the forward rotation direction (direction of arrow 12 in FIG. 2). 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 triboelectric charging is completed and the triboelectric charging operation is completed. The collection plate 2 may be rotated so as to generate static electricity, and the rotation speed and rotation time shown here are only examples, and they should be appropriately set according to actual usage conditions and the like. Just do it.

Then, when the outdoor air is taken into the dust collecting device 1 after the triboelectric 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 collecting plates 2. .. When the outdoor air passes between the collection plates 2, the dust 5 in the outdoor air is collected on the surface of the collection plate 2 by the static electricity generated on the surface of the collection plate 2.

Here, since the brush 3 is arranged 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 outdoor air passing between the collection plates 2 is present. It does not significantly obstruct the flow of air and has low ventilation resistance. Therefore, high dust collection performance can be obtained.

Further, as the operation of the dust collecting device 1, there are an automatic surface cleaning operation and an 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 triboelectric charging operation described above, the collection plate 2 is moved at a speed of 1 [rpm] for 20 seconds by a command from the drive control unit 7 of the dust collecting device 1 to the motor 6. , Rotate forward. When the collection plate 2 rotates and the surface of the collection plate 2 rubs against the brush 3, the dust adhering to the surface of the collection plate 2 is wiped off by the brush 3, and the collection plate 2 is triboelectrically charged. That is, the rotation of the collection plate 2 causes both the dust adhering to be removed and the triboelectric charge of the collection plate 2 to be performed. A part of the dust adheres to the lower part of the brush 3 as an agglomerate 17, and when the agglomerate 17 becomes a certain size or more, it falls by gravity and is attached to the dust box 4 provided in the lower part of the brush 3. Will be recovered.

FIG. 5 is a diagram illustrating the effect of the first dust clogging prevention unit 53 of the dust collecting device according to the first embodiment. As shown in FIG. 5A, when the first dust clogging prevention portion 53 is not provided, an agglomerate of dust 5 that could not be scraped off between the collecting plate 2 and the non-woven fabric that becomes the brush portion 3b with use. 17 is gradually clogged. On the other hand, as shown in FIG. 5B, in the dust collecting device 1 of the first embodiment including the first dust clogging prevention unit 53, the dust 5 is in front of the non-woven fabric serving as the brush portion 3b, and the first dust is the first dust. It is scraped off by the clogging prevention unit 53. Therefore, it is possible to suppress clogging of the dust 5 between the collecting plate 2 and the non-woven fabric serving as the brush portion 3b.

FIG. 6 is a diagram showing a flowchart for explaining the operation of the dust collecting device 1 according to the first embodiment. Next, the operation of the dust collecting device 1 according to the first embodiment will be described with reference to FIG. When the above-mentioned initial triboelectric operation of the dust collecting device 1 is required (YES in step S1), the cooperative control unit 25 controls the drive with the fan (not shown) of the heat exchange ventilator 10 stopped. The unit 7 is instructed to perform the above-mentioned initial triboelectric charging operation (step S2). Then, when the initial triboelectric operation is completed, ventilation is started. That is, the cooperative control unit 25 operates the fan (not shown) of the heat exchange ventilation device 10 (step S3). As a result, the outdoor air taken in from the outside 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 ventilation device 10. The outdoor air supplied to the heat exchange ventilation device 10 exchanges heat with the indoor air flowing into the heat exchange ventilation device 10 through the indoor exhaust port 24 to recover heat, and is supplied to the room from the indoor air supply port 23. ..

The cooperation control unit 25 checks the deterioration of the dust collection performance of the dust collection device 1 based on the detection signals from each of the particle sensor 11a and the particle sensor 11b arranged in the dust collection device 1 (step S4). .. Then, when the cooperative control unit 25 detects that the dust collection performance of the dust collection device 1 has deteriorated based on each detection signal (YES in step S4), the fan of the heat exchange ventilation device 10 (not shown). Is stopped (step S5). Here, the threshold value for detecting whether or not the dust collecting performance of the dust collecting device 1 is deteriorated can be set to an arbitrary value in advance. In this way, the dust collecting device 1 is made to perform the cleaning and charging operation while the air flow is stopped (step S6). When the dust collecting performance of the collecting plate 2 is restored by the cleaning and charging operation, the dust collecting plate 2 collects the dust again. The above operations of steps S3 to S6 are repeated until the operation of the air conditioner is stopped.

As described above, according to the dust collecting device 1 of the first embodiment, the first dust clogging prevention unit 53 is provided in the vicinity of the brush 3 so that the dust collected by the collecting plate 2 can be removed. Therefore, it is possible to suppress the clogging of dust between the collection plate 2 and the brush 3, and to suppress a decrease in the moving speed of the collection plate 2 due to the overload of the motor 6. Therefore, it is possible to realize an air conditioner equipped with the dust collecting device 1 and the dust collecting device having a stable triboelectric charge amount and dust collecting performance.

Embodiment 2.
The dust collecting device 1 according to the second embodiment basically has the same configuration as the dust collecting device 1 according to the first embodiment. The dust collecting device 1 of the second embodiment is provided with a second dust clogging prevention unit 54 as a dust clogging prevention device on the upper part of the brush 3, and a point where the collection plate 2 is rotated in the forward direction and then in the reverse direction. Is different from the dust collecting device 1 of the first embodiment. Hereinafter, the dust collecting device 1 of the second embodiment will be mainly described as being different from the dust collecting device 1 of the first embodiment. The configuration of the dust collecting device 1 not described in the second embodiment is the same as that described in the first embodiment.

FIG. 7 is a perspective view illustrating the configuration of the brush and the collecting plate included in the dust collecting device according to the second embodiment. As shown in FIG. 7, the dust collecting device 1 of the second embodiment has a second dust clogging prevention unit installed on the upper part of the brush 3 in addition to the first dust clogging prevention unit 53 installed on the lower part of the brush 3. It has a part 54. When the collection plate 2 rotates forward, the upper part of the brush 3 is on the rear side of the brush 3 with respect to the traveling direction of the brush 3 with respect to the collection plate 2, and the collection plate 2 rotates in the reverse direction. It is on the front side in the traveling direction when the brush 3 moves relative to the collecting plate 2.

Next, the operation of the air conditioner according to the second embodiment will be described. Here, the operation different from that of the dust collecting device 1 of the first embodiment will be mainly described. Further, it will be described as assuming that the drive control unit 7 gives an operation instruction. By repeatedly using the dust collecting device 1 of the first embodiment, there is a possibility that the agglomerates 17 may be slightly clogged between the collecting plate 2 and the brush 3 even if the automatic surface cleaning is performed. .. When the agglomerate 17 is clogged between the collection plate 2 and the brush 3, the agglomerate 17 becomes a resistance when the collection plate 2 rotates. Therefore, in the dust collecting device 1, the load on the motor 6 increases, and the rotation speed of the collecting plate 2 decreases.

Therefore, as an operation of clearing the clogging of the agglomerates 17, the dust collecting device 1 of the second embodiment first rotates the collecting plate 2 at a speed of 1 [rpm] for 20 seconds (arrow 12 in FIG. 7). Rotate in the direction) to perform the triboelectric charging operation of the collection plate 2. After that, the collecting plate 2 is rotated in the reverse direction (rotation in the direction of the arrow 12 in FIG. 8 described later) for 20 seconds at a speed of 1 [rpm]. Here, when the collecting plate 2 is rotated in the reverse direction, the agglomerates 17 below the brush 3 may move to the upper side of the brush 3 and not fall into the dust box 4. Therefore, the reverse rotation of the collection plate 2 is set to less than one rotation so as not to rotate too much.

FIG. 8 is a diagram illustrating the reverse rotation of the collection plate 2 in the dust collection device 1 of the second embodiment. By rotating the collection plate 2 in the reverse direction, the agglomerates 17 are separated from the collection plate 2 and the brush 3, and fall into the dust box 4 by gravity. When the agglomerate 17 does not fall due to gravity and remains attached to the collection plate 2, the agglomerate 17 moves upward as the collection plate 2 rotates, as shown in FIG. , The second dust clogging prevention unit 54 scrapes off the agglomerate 17. Therefore, the aggregate 17 does not enter the brush 3 of the collection plate 2 again. When the rotation of the collecting plate 2 is stopped, the triboelectric charging is completed and the triboelectric charging operation is completed. Here, in the second embodiment, the collection plate 2 is rotated forward at a speed of 1 [rpm] for 20 seconds, and then the collection plate 2 is rotated backward at a speed of 1 [rpm] for 20 seconds. Although the operation is shown, the speed and time for performing the forward rotation and the reverse rotation are not limited to this, and may be changed as appropriate.

As described above, the dust collecting device 1 of the second embodiment has the same effect as that of the first embodiment. Further, in the dust collecting device 1 of the second embodiment, the collecting plate 2 is rotated in the reverse direction, and the second dust clogging prevention unit 54 installed on the upper part of the brush 3 betweens the collecting plate 2 and the brush 3. The agglomerates 17 that are slightly clogged can be discharged to the outside. Therefore, it is possible to suppress the clogging of dust between the collection plate 2 and the brush 3, and to suppress a decrease in the moving speed of the collection plate 2 due to the overload of the motor 6. Therefore, it is possible to realize an air conditioner equipped with the dust collecting device 1 and the dust collecting device having a stable triboelectric charge amount and dust collecting performance.

Embodiment 3.
The dust collecting device 1 according to the third embodiment basically has the same configuration as the dust collecting device 1 according to the second embodiment. The dust collecting device 1 of the third embodiment is described in that the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 of the brush 3 have an inclined portion 55 at their respective tip portions. It is different from the dust collecting device 1. Hereinafter, the dust collecting device 1 of the third embodiment will be described focusing on the difference from the dust collecting device 1 of the second embodiment. The configuration of the dust collecting device 1 not described in the third embodiment is the same as that described in the first and second embodiments.

FIG. 9 is a perspective view illustrating the configuration of the brush and the collecting plate included in the dust collecting device according to the third embodiment. As shown in FIG. 9, the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 of the dust collection device 1 of the third embodiment each have an inclined portion 55 at the tip portion on the side close to the collection plate 2. Be prepared. As shown in FIG. 9, the inclined portion 55 has a structure having an inclined surface having an inclination of about 45 degrees from the side surface side of the brush portion 3b to the outside. The first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 having the inclined portion 55 move relative to the collection plate 2 and proceed, and by rubbing the surface of the collection plate 2, the dust 5 causes the dust. Dirt on the collecting plate 2 rises on the inclined portion 55. The dust that has risen on the inclined portion 55 moves along the inclined surface of the inclined portion 55. At this time, since the distance from the charged collection plate 2 is increased, it becomes difficult to receive the attractive force due to the electrostatic force of the collection plate 2, the collection plate 2 is not reattached, and the dust box 4 is likely to fall. Here, the dust collecting device 1 of the third embodiment has described an example in which the angle of the inclined portion 55 is 45 degrees, but the angle of the inclined portion 55 is not limited to this and may be changed as appropriate.

As described above, the dust collecting device 1 of the third embodiment has the same effect as that of the first embodiment. Further, in the dust collecting device 1 of the third embodiment, the first dust clogging prevention unit 53 and the second dust clogging prevention unit 54 each have an inclined portion 55 at the tip end portion. High dust removal performance can be exhibited by the inclined portion 55 scraping off the dust from the collecting plate 2. Therefore, it is possible to suppress the clogging of dust between the collection plate 2 and the brush 3, and to suppress a decrease in the moving speed of the collection plate 2 due to the overload of the motor 6. Therefore, it is possible to realize an air conditioner equipped with the dust collecting device 1 and the dust collecting device having a stable triboelectric charge amount and dust collecting performance.

Embodiment 4.
The dust collecting device 1 according to the fourth embodiment basically has the same configuration as the dust collecting device 1 according to the third embodiment. The dust collecting device 1 of the fourth embodiment is characterized in that the surfaces of the inclined portion 55 of the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 of the brush 3 are finely processed. It is different from the dust collecting device 1. Hereinafter, the dust collecting device 1 of the fourth embodiment will be described focusing on the difference from the dust collecting device 1 of the third embodiment. The configuration of the dust collecting device 1 not described in the fourth embodiment is the same as that described in the first to third embodiments.

FIG. 10 is a perspective view illustrating the configuration of the brush and the collecting plate included in the dust collecting device according to the fourth embodiment. As shown in FIG. 10, the inclined portions 55 of the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 of the dust collecting device 1 of the fourth embodiment have surface roughness Ra of 0.01 μm or more and 5 μm. It has a finely processed surface 56 that has been finely processed and has the following irregularities. When the collecting plate 2 is rotated, dust on the surface of the collecting plate 2 rises on the inclined portion 55. The finely processed surface 56 of the inclined portion 55 has a lotus effect, and prevents dust from adhering to the surfaces of the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 by van der Waals force. Therefore, the dust is likely to fall into the dust box 4.

As described above, the dust collecting device 1 of the fourth embodiment has the same effect as that of the first embodiment. Further, in the dust collecting device 1 of the fourth embodiment, the inclined portion 55 of the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 has a finely processed surface 56. Then, due to the Lotus effect acting on the microfabricated surface 56, high dust removal performance can be exhibited. Therefore, it is possible to suppress the clogging of dust between the collection plate 2 and the brush 3, and to suppress a decrease in the moving speed of the collection plate 2 due to the overload of the motor 6. Therefore, it is possible to realize an air conditioner equipped with the dust collecting device 1 and the dust collecting device having a stable triboelectric charge amount and dust collecting performance.

Embodiment 5.
The dust collecting device 1 according to the fifth embodiment basically has the same configuration as the dust collecting device 1 according to the third embodiment. The dust collecting device 1 of the fifth embodiment is different from the dust collecting device 1 of the first embodiment in that it includes an air filter 52. Hereinafter, the dust collecting device 1 of the fifth embodiment will be described focusing on the difference from the dust collecting device 1 of the first embodiment. The configuration of the dust collecting device 1 not described in the fifth embodiment is the same as that described in the first embodiment.

FIG. 11 is a perspective view showing the configuration of the dust collecting device according to the fifth embodiment. As shown in FIG. 11, the dust collecting device 1 of the fifth embodiment includes an air filter 52 that collects dust at a discharge port 14b on the downstream side of the housing 15. As the air filter 52, a HEPA filter obtained by molding a PP melt-blown non-woven fabric into a pleated shape is used here. 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 as in the dust collecting device 1 of the fifth embodiment, the air from which the dust and the like in the air have been removed by the collecting plate 2 can be further purified. , High dust collection performance can be obtained.

As described above, the dust collecting device 1 of the fifth embodiment has the same effect as that of the first embodiment. Further, in the dust collecting device 1 of the fifth embodiment, the air from which dust and the like have been removed by the collecting plate 2 of the dust collecting device 1 can be further purified by the air filter 52, and high dust collecting performance can be obtained. be able to. Here, the HEPA filter used as the air filter 52 has a high fiber density, is clogged relatively quickly by the collected dust, and the pressure loss increases. Therefore, maintenance such as filter replacement is recommended every few months. .. The dust collecting device 1 of the fifth embodiment has a configuration in which a collecting plate 2 is provided on the upstream side of the HEPA filter with respect to the air flow. Therefore, by removing the dust upstream of the HEPA filter, the dust load on the HEPA filter can be reduced. As a result, the increase in pressure loss due to clogging of the HEPA filter becomes gradual. Therefore, the maintenance period of the HEPA filter can be extended, and both high dust collection performance and long-term dust collection can be achieved at the same time.

Embodiment 6.
In the above-described first to fifth embodiments, the characteristic configurations of the dust collector 1 and the air conditioner described as different embodiments may be appropriately combined and configured.

Further, in the first to fifth embodiments, the brush 3 is inserted into the gap between the collection plates 2 from the downstream side to the upstream side of the collection plate 2. It is not limited to. For example, the brush 3 may be inserted into the gap of the collection plate 2 from the upstream side to the downstream side of the collection plate 2. In the case of this configuration, the dust box 4 may be similarly arranged below the brush 3.

Further, in the first to fifth embodiments, an example in which the first dust clogging prevention unit 53 is an aluminum plate is shown, but the material is not limited. For example, a resin such as rubber may be used. The material is not limited.

Then, in the above-described embodiment, an example is shown in which the first dust clogging prevention unit 53 and the second dust clogging prevention unit 54 are integrated with the connecting portion 3a of the brush 3, but they do not necessarily have to be integrated. .. For example, the first dust clogging prevention unit 53 and the second dust clogging prevention unit 54 may be provided in the vicinity of the brush 3 as independent dust clogging prevention devices. However, even when the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 are provided independently of the brush 3, the thickness of the non-woven fabric to be the brush portion 3b protrudes from the dust clogging prevention device as described above. Let me. Then, it is preferable that the non-woven fabric is pressed against the collecting plate 2 and the non-woven fabric is crushed so that both the dust clogging prevention device and the brush 3 are adjusted to be close to the collecting plate 2.

1 dust collecting device, 2 collecting plate, 3 brush, 3a connecting part, 3b brush part, 4 dust box, 4a tip part, 5 dust, 6 motor, 7 drive control unit, 8 first shaft, 9 second shaft, 10 Heat exchange ventilator, 11a, 11b particle sensor, 12 arrow, 14a suction port, 14b exhaust port, 15 housing, 15a upper surface, 15b lower surface, 16 air passage, 17 aggregate, 18 first baffle material, 19 second baffle Material, 20 falling ceiling, 21 outdoor air supply port, 22 outdoor exhaust port, 23 indoor air supply port, 24 indoor exhaust port, 25 cooperative control unit, 30 air supply air passage, 31, 41 duct, 40 exhaust air passage, 52 air Filter, 53 1st dust clogging prevention part, 54 2nd dust clogging prevention part, 55 inclined part, 56 finely processed surface, 57 pressure member.

Claims

A plurality of collection plates arranged at intervals in a direction intersecting the air passage direction in the air passage through which the air passes, and charged by friction.
A plurality of brushes having a brush portion that rubs the surface of the collection plate, and
The dust collected by the collecting plate is installed in front of the brush in the traveling direction of the brush with respect to the collecting plate when the collecting plate and the brush move relative to each other, and the dust collected by the collecting plate is collected by the collecting plate. Dust collecting device with a dust clogging prevention device to remove from.
The brush
A connecting portion that is integrated with the dust clogging prevention device and supports the brush portion,
The dust collecting device according to claim 1, further comprising a brush portion and a pressurizing member that applies the dust clogging prevention device to the collecting plate.
The dust collecting device according to claim 2, wherein the pressure received by the brush portion from the collecting plate is larger than the pressure received by the dust clogging prevention device.
The dust collecting device according to any one of claims 1 to 3, wherein the dust clogging prevention device includes an inclined portion having an inclined surface that spreads from a side close to the collecting plate to a side far from the collecting plate.
The dust collecting device according to any one of claims 1 to 4, wherein the dust clogging prevention device has irregularities on the surface.
The dust collecting device according to claim 5, wherein the surface of the dust clogging prevention device has a surface roughness of 0.01 μm or more and 5 μm or less.
The dust clogging prevention device is further installed on the rear side of the brush in the traveling direction of the brush with respect to the collection plate when the collection plate and the brush move relative to each other. Item 6. The dust collecting device according to any one of items 6.
The invention according to any one of claims 1 to 7, further comprising an air filter that is installed on the downstream side of the collection plate with respect to the air flow and collects the dust that has passed through the collection plate. Dust collecting device.
An air conditioner equipped with the dust collecting device according to any one of claims 1 to 8.
A plurality of collection plates that are charged by friction and collect dust, a plurality of brushes having a brush portion that rubs the surface of the collection plate, and a dust clogging prevention device that removes the dust adhering to the collection plate. In a dust collecting device equipped with
The process of installing the brush portion having a thickness protruding toward the collection plate side from the dust clogging prevention device on the brush, and
A method for manufacturing a dust collecting device, which comprises a step of pressing the brush portion against the collecting plate to adjust the distance relationship between the brush portion and the dust clogging prevention device and the collecting plate.