JP6618666B1 - Dust collection device, air conditioner equipped with dust collection device, and method of manufacturing dust collection device - Google Patents

Abstract

The dust collecting device is arranged in the air passage through which the air passes at intervals in a direction intersecting with the air passing direction, and a plurality of collecting plates charged by friction, and a brush unit for rubbing the surface of the collecting plate. A plurality of brushes, and a collecting plate that is disposed on the front side of the brushes in the advancing direction of the brush with respect to the collecting plate when the collecting plate and the brush relatively move, and that collects dust collected by the collecting plate. And a dust clogging prevention device that removes dust from the device.

Description

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

  Conventionally, there are dust collection devices that generate static electricity and collect dust in the air. As this kind of dust collecting device, it is inserted into the gap between the collecting plates arranged at intervals in the direction intersecting the air passage direction, and contacts the surface of the collecting plate (For example, refer to Patent Document 1). This dust collecting device generates static electricity on the surface of the collecting plate by rotating the collecting plate, relatively moving the brush and the collecting plate, and rubbing the collecting plate. Dust contained in the air passing between them is electrostatically collected. The brush of the dust collecting device scrapes off the dust collected by the collecting plate.

JP-A 61-227860

  In the dust collecting device of Patent Document 1, the removal of dust collected on the surface of the collecting plate and the frictional charging of 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 collecting plate and the brush, the load of the driving unit such as a motor becomes excessive, and the moving speed of the collecting plate is reduced. Therefore, there is a possibility that the triboelectric charge amount and the dust collection performance are lowered.

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

  A dust collection device according to the present invention includes a plurality of collection plates that are arranged at intervals in a direction intersecting the air passage direction in an air passage through which air passes, and are charged by friction, and a surface of the collection plate. Dust collected by the collecting plate that is installed on the front side 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 plurality of brushes having the brush portions that rub. And a dust clogging prevention device for removing the dust from the collecting plate.

  Moreover, the air conditioner which concerns on this invention mounts the dust collection device mentioned above.

  Furthermore, 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 including a dust clog prevention device that removes adhering dust, a step of installing on the brush a brush portion having a thickness protruding from the dust clog prevention device to the collecting plate side, and collecting the brush portion And a step of adjusting the distance relationship between the brush portion and the dust clogging prevention device and the collection plate by pressing against the plate.

  According to the present invention, before the dust collected by the collection plate passes between the collection plate and the brush portion, the dust clogging prevention device that removes the dust is provided, so that there is no gap between the collection plate and the brush. It is possible to suppress the clogging of the dust and the reduction of the moving speed of the collecting plate due to the overload of the motor or the like. For this reason, the dust collection device which has the stable triboelectric charge amount and dust collection performance is realizable.

It is a figure which shows the outline of the air conditioner carrying the dust collection device which concerns on Embodiment 1. FIG. 1 is a perspective view of a dust collection device according to Embodiment 1. FIG. It is a perspective view explaining the structure in the brush and collection plate which the dust collection device which concerns on Embodiment 1 has. It is a figure which shows the relationship between the brush which the dust collection device which concerns on Embodiment 1 has, and a collection board. It is a figure explaining the effect in the 1st dust clogging prevention part 53 of the dust collection device which concerns on Embodiment 1. FIG. It is a figure which shows the flowchart explaining operation | movement of the dust collection device 1 which concerns on Embodiment 1. FIG. It is a perspective view explaining the structure of the brush and collection plate which the dust collection device which concerns on Embodiment 2 has. It is a figure explaining reverse rotation of the collection board 2 in the dust collection device 1 of Embodiment 2. FIG. It is a perspective view explaining the structure of the brush and 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 collection plate which the dust collection device which concerns on Embodiment 4 has. FIG. 10 is a perspective view illustrating a configuration of a dust collection device according to a fifth embodiment.

  Hereinafter, a dust collection device and an air conditioner according to an embodiment will be described with reference to the accompanying drawings. In the following drawings, the same reference numerals denote the same or corresponding parts, and are common to the whole text of the embodiments described below. And the form of the component represented by the whole specification is an illustration to the last, Comprising: It does not limit to the form described in the specification. In particular, the combination of the constituent elements is not limited to the combination in each embodiment, and the constituent elements described in the other embodiments can be applied to another embodiment. In the following description, the upper side in the figure is referred to as “upper side” and the lower side is described as “lower side”. Furthermore, in order to facilitate understanding, terms representing directions (eg, “right”, “left”, “front”, “rear”, etc.) are used as appropriate. It is not limited by the terminology. Further, the levels of humidity and temperature are not particularly determined in relation to absolute values, but are relatively determined in terms of the state and operation of the apparatus. In the drawings, the relationship between the sizes of the constituent members may be different from the actual one.

Embodiment 1 FIG.
Here, with reference to FIGS. 1-6, the air conditioner which mounts the dust collection device which concerns on Embodiment 1, and a dust collection device is demonstrated. 1 is a diagram showing an outline of an air conditioner equipped with a dust collection device according to Embodiment 1. FIG. Here, the white arrow shown in FIG. 1 and each figure mentioned later has shown the flow of air.

  The air conditioner according to Embodiment 1 includes a dust collection device 1 and a heat exchange ventilator 10. The air conditioner is housed in a falling ceiling 20 in the house. As shown in FIG. 1, the falling ceiling 20 indicates a region where a part of the ceiling is lowered. From the viewpoint of indoor aesthetics, there are many houses that collectively store an air conditioner and other air conditioners in the ceiling 20 as shown in FIG. When the falling ceiling 20 is used as the installation space for the air conditioner, it is generally possible to ensure a wide installation space as compared with the case where the ceiling 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. In addition, an indoor air supply port 23 and an indoor exhaust port 24 are provided on the indoor side of the falling 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.

  And the dust collection device 1 and the heat exchange ventilator 10 are arrange | positioned in the air supply air path 30 in order from the upstream. 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. 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 assist function can be said to be an energy saving function because it is a function of reducing 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 inlet 21 and has flowed into the ceiling 20. Details of the dust collection device 1 according to the first embodiment will be described below. Further, a particle sensor 11a and a particle sensor 11b for detecting the dust concentration of the passing air are provided at positions upstream and downstream of the dust collection device 1 with respect to the air flow. The upstream particle sensor 11a detects the dust concentration in the outdoor air. Further, 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. Cooperation control part 25 of Embodiment 1 is electrically connected to dust collection device 1 and heat exchange ventilator 10 via a communication line, respectively. Moreover, the cooperation control part 25 controls the operation | movement of the dust collection device 1 and the heat exchange ventilator 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 implements a control function. Moreover, the cooperation control part 25 can be comprised with the arithmetic unit which has a microcomputer etc. which run the software which has a predetermined procedure.

  FIG. 2 is a perspective view of the dust collection device according to the first embodiment. FIG. 3 is a perspective view illustrating the configuration of the brush and the collection plate included in the dust collection device according to the first embodiment. FIG. 3 shows a pair of collecting plates 2 and brushes 3 extracted. Furthermore, FIG. 4 is a figure which shows the relationship between the brush which the dust collection device which concerns on Embodiment 1 has, and a collection board. The dust collection device 1 has a configuration in which a plurality of collecting plates 2, a plurality of brushes 3, and a dust box 4 that are rotationally driven 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 through which air sucked from the suction port 14a is exhausted from the discharge port 14b. As shown in FIG. 1, the dust collection device 1 is provided in the supply air passage 30 of the air conditioner. For this reason, the outdoor air which flowed in from the outdoor air inlet 21 passes through the dust collecting device 1.

  The collection plate 2 is, for example, a PP (Poly Propylene) circular plastic plate having a thickness of 1 mm, a diameter of 300 mm, and a negative triboelectric charge tendency. However, the material of the collection plate 2 is not limited to PP, and may be a resin material such as vinyl chloride or PTFE (Poly Tetra Fluoro Ethylene). The collecting plates 2 are arranged in a direction intersecting with the passage direction of the outdoor air in the casing 15, for example, with a spacing of 3 mm, and are coupled by the first shaft 8 penetrating the central portion of the collecting plate 2. The whole is 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 scrapes off dust collected by the collecting plate 2. The brush 3 is configured, for example, by attaching a brush part 3b, which is a nonwoven fabric of PA6 (Polyamide6) fiber, for example, having a positive triboelectric charging tendency, to an aluminum rectangular connecting part 3a having a thickness of 1 mm. . The brush part 3b is supported by the connecting part 3a, and comes into contact with the surface of the collecting plate 2 to become a friction body that rubs. Moreover, the brush part 3b scrapes off the dust on the collection plate 2. The material of the brush part 3b is not limited to PA6 fiber, For example, nylon, cotton, or PAN (Polyacrylonitrile) fiber may be used.

  As shown in FIG. 3, two attachment holes are formed in the connecting portion 3 a of the brush 3, and the second shaft 9 is inserted into each attachment hole, and the brushes 3 are coupled and fixed. Here, it is desirable that the nonwoven fabric fibers in the brush portion 3b to be a friction body have conductivity by mixing carbon, metal, and the like. Further, the brush portion 3b may be in the form of a brush, a sponge, or a plate other than the non-woven fabric. Here, an example in which the collecting plate 2 is negatively charged has been shown, but the material of the collecting plate 2 is PA6, or PTFE having a strong negative charge tendency is used as the friction material of the collecting plate 2. Thus, the collecting plate 2 may be positively charged.

  Further, the brush 3 according to the first embodiment includes a first dust clogging prevention unit 53 serving as a dust clogging prevention device at the lower part of the brush 3. The first dust clogging prevention unit 53 according to the first embodiment is a plate made of aluminum that is oriented in the vertical direction with respect to the surface of the collection plate 2 and attached close to the collection plate 2. The first dust clogging preventing portion 53 of the first embodiment is integrated with the connecting portion 3 a of the brush 3. The lower part of the brush 3 is on the front side in the traveling direction when the brush 3 is relatively moved with respect to the collecting plate 2 as the collecting plate 2 rotates in the forward rotation direction. Therefore, the first dust clogging prevention unit 53 removes 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 unit 3b. Can do.

  The brush 3 is inserted into the gap between the collecting plates 2 so that the brush portion 3 b contacts the surface of the collecting plate 2, and is disposed on the downstream side of the collecting plate 2. Further, a pressure member 57 such as a resin ring spacer is provided between the connecting portions 3a so that the brush portion 3b of the brush 3 is pressed against and contacts the collecting plate 2. 9 is installed.

  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. By arranging the brush 3 in this way, it is effective in reducing the ventilation resistance. Each brush 3 is all connected to the ground. Here, the brush 3 is in contact with a part of the collection plate 2, and the collection plate 2 rotates to move the brush 3 relative to the collection plate 2. It is the structure which can touch the whole. In order for the brush 3 and the first dust clog prevention unit 53 to achieve both frictional charging and cleaning of the collection plate 2, both the brush 3 and the first dust clog prevention unit 53 pressurize the pressure member 57. While being done, it is necessary to firmly contact or approach the collection plate 2.

  FIG. 4 shows a pair of the collecting plate 2 and the brush 3 extracted. Here, the manufacturing method of the dust collection device 1 of Embodiment 1 is demonstrated. At the time of manufacturing the dust collection device 1 of the first embodiment, as shown in FIG. 4 (a), the brush portion 3b having a thickness protruding to the collection plate 2 side from the first dust clogging prevention portion 53 is The process of installing in the connection part 3a of the brush 3 is performed. And as shown in FIG.4 (b), it pressurizes in the direction of a white arrow, the brush part 3b is pressed against the collection board 2, and the process which crushes the brush part 3b is performed. 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 collecting plate 2, and the brush portion 3b, the first dust clogging preventing portion 53 and the collecting plate 2 Adjust the distance relationship. In the dust collection device 1 of the first embodiment, the brush portion 3b is pressed against the collection plate 2 in the same manner for the plurality of brushes 3 of the dust collection device 1, and the brush portion 3b, which is a nonwoven fabric, is crushed, The contact with the collection plate 2 and the pressure are adjusted.

  As shown in FIG. 2, a dust box 4 that collects an aggregate 17 that is a lump of dust or the like attached to the collecting plate 2 and removed by the brush 3 is disposed below the brush 3 in the housing 15. Has been. Further, a first baffle material 18 and a second baffle material 19 are 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. The second baffle material 19 is disposed on the inner surface side of the lower surface 15 b of the housing 15.

  The dust collection 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 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 rotates. The drive control unit 7 controls each device included in the dust collection device 1. The drive control unit 7 includes a microcomputer and performs processing related to device control based on a predetermined procedure. The drive control unit 7 includes 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 collection device 1 according to Embodiment 1 of the present invention will be described. When the dust collection device 1 is to be 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 collection plate 2 is performed. At this time, a command is sent from the drive control unit 7 of the dust collection device 1 to the motor 6 to rotate the collection plate 2. Here, the collection plate 2 is rotated in the normal rotation direction (the direction of the arrow 12 in FIG. 2) at a speed of 1 [rpm] for 20 seconds. 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. That's fine.

  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 outdoor air passing between the collection plates 2 is used. Ventilation resistance is small without greatly hindering the flow of air. Therefore, high dust collection performance can be obtained.

  Further, the operation of the dust collecting device 1 includes 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, similarly to the above-described initial frictional charging operation, 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 collection device 1 to the motor 6. Rotate forward. 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 triboelectrically 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. 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 larger, it falls due to gravity and enters the dust box 4 provided at the lower part of the brush 3. Collected.

  FIG. 5 is a diagram for explaining the effect of the first dust clogging prevention unit 53 of the dust collection device according to the first embodiment. As shown in FIG. 5A, when the first dust clogging prevention portion 53 is not provided, the aggregate of the dust 5 that could not be scraped off between the use and the nonwoven fabric that becomes the brush portion 3b. 17 gradually clogs. On the other hand, as shown in FIG. 5 (b), 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 that becomes the brush unit 3b. It is scraped off by the clogging prevention unit 53. For this reason, the clogging of the dust 5 between the collection board 2 and the nonwoven fabric used as the brush part 3b can be suppressed.

  FIG. 6 is a flowchart illustrating the operation of the dust collection device 1 according to the first embodiment. Next, operation | movement of the dust collection device 1 which concerns on Embodiment 1 is demonstrated using FIG. When the above-described initial frictional charging operation of the dust collection device 1 is necessary (YES in step S1), the cooperation control unit 25 performs drive control in a state where the fan (not shown) of the heat exchange ventilator 10 is stopped. The unit 7 is instructed 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 if the cooperation control part 25 detects that the dust collection performance of the dust collection device 1 is falling based on each detection signal (YES of step S4), the fan (not shown) of the heat exchange ventilator 10 will be shown. Is stopped (step S5). Here, the threshold value for detecting whether or not the dust collection performance of the dust collection device 1 is lowered can be set to an arbitrary value in advance. 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.

  As described above, according to the dust collection 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 collection plate 2 is removed. For this reason, clogging of dust between the collection plate 2 and the brush 3 can be suppressed, and a decrease in the moving speed of the collection plate 2 due to overload of the motor 6 can be suppressed. Therefore, the dust collection device 1 having a stable triboelectric charge amount and dust collection performance and an air conditioner equipped with the dust collection device can be realized.

Embodiment 2. FIG.
The dust collection device 1 according to the second embodiment basically has the same configuration as the dust collection device 1 according to the first embodiment. The dust collection device 1 according to the second embodiment is provided with a second dust clogging prevention unit 54 serving as a dust clogging prevention device at the upper part of the brush 3 and a point that the collection plate 2 is rotated in the reverse direction after the normal rotation. This is different from the dust collection device 1 of the first embodiment. Hereinafter, the dust collection device 1 according to the second embodiment will be described focusing on differences from the dust collection device 1 according to the first embodiment. The configuration of the dust collection 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 a configuration of a brush and a collection plate included in the dust collection device according to Embodiment 2. As shown in FIG. 7, the dust collection device 1 according to the second embodiment is configured to prevent the second dust clogging installed at the upper part of the brush 3 in addition to the first dust clogging preventing part 53 installed at the lower part of the brush 3. Part 54. When the collection plate 2 rotates forward, the upper portion 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 is rotated in reverse. It becomes the front side in the traveling direction when the brush 3 moves relative to the collection plate 2.

  Next, the operation of the air conditioner according to Embodiment 2 will be described. Here, the operation different from the dust collection device 1 of the first embodiment will be mainly described. Further, the description will be made on the assumption that the drive control unit 7 instructs the operation. In the dust collection device 1 of the first embodiment, the aggregate 17 may be slightly clogged between the collection plate 2 and the brush 3 even if automatic surface cleaning is performed by repeated use. . When the aggregate 17 is clogged between the collecting plate 2 and the brush 3, the aggregate 17 becomes a resistance when the collecting plate 2 rotates. For this reason, in the dust collection device 1, the load on the motor 6 increases and the rotation speed of the collection plate 2 decreases.

  Therefore, in the dust collecting device 1 of the second embodiment, as an operation for eliminating the clogging of the aggregate 17, first, the collecting plate 2 is rotated forward at a speed of 1 [rpm] for 20 seconds (arrow 12 in FIG. 7). Direction of rotation) to perform the triboelectric charging operation of the collecting plate 2. Thereafter, the collection plate 2 is rotated in the reverse direction (rotation in the direction of arrow 12 in FIG. 8 described later) at a speed of 1 [rpm] for 20 seconds. Here, when the collection plate 2 is rotated in the reverse direction, there is a possibility that the aggregate 17 located below the brush 3 moves to the upper side of the brush 3 and does not fall into the dust box 4. For this reason, 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 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 aggregate 17 is detached from between the collection plate 2 and the brush 3 and falls into the dust box 4 by gravity. When the aggregate 17 does not fall due to gravity and remains attached to the collection plate 2, the aggregate 17 moves upward as the collection plate 2 rotates as shown in FIG. 8. The second dust clogging prevention unit 54 scrapes off the aggregate 17. Therefore, the aggregate 17 does not enter again between the brush 3 of the collection plate 2. When the collection plate 2 stops rotating, the triboelectric charging is completed and the triboelectric charging operation ends. Here, in Embodiment 2, after the collection plate 2 is rotated forward at a speed of 1 [rpm] for 20 seconds, 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 collection device 1 of the second embodiment has the same effect as that of the first embodiment. Further, in the dust collection device 1 of the second embodiment, the collection plate 2 is reversely rotated, and the second dust clogging prevention unit 54 installed on the upper part of the brush 3 is interposed between the collection plate 2 and the brush 3. The agglomerates 17 that are clogged up little by little can be discharged to the outside. For this reason, clogging of dust between the collection plate 2 and the brush 3 can be suppressed, and a decrease in the moving speed of the collection plate 2 due to overload of the motor 6 can be suppressed. Therefore, the dust collection device 1 having a stable triboelectric charge amount and dust collection performance and an air conditioner equipped with the dust collection device can be realized.

Embodiment 3 FIG.
The dust collection device 1 according to Embodiment 3 basically has the same configuration as the dust collection device 1 according to Embodiment 2. The dust collecting device 1 of the third embodiment is different from that of the second embodiment in that the first dust clogging preventing portion 53 and the second dust clogging preventing portion 54 of the brush 3 have inclined portions 55 at their respective tip portions. Different from the dust collection device 1. Hereinafter, the dust collection device 1 according to the third embodiment will be described focusing on differences from the dust collection device 1 according to the second embodiment. The configuration of the dust collection 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 a configuration of a brush and a collection plate included in the dust collection device according to Embodiment 3. As shown in FIG. 9, each of the first dust clogging prevention unit 53 and the second dust clogging prevention unit 54 of the dust collection device 1 according to the third embodiment has an inclined part 55 at the tip portion near the collection plate 2. Prepare. As shown in FIG. 9, the inclined portion 55 has a structure having an inclined surface with an inclination of about 45 degrees from the side of the brush portion 3b toward the outside. The first dust clogging prevention unit 53 and the second dust clogging prevention unit 54 having the inclined portion 55 move relative to the collection plate 2 and advance, and rub the surface of the collection plate 2 to cause dust 5 The dirt on the collecting plate 2 is applied to 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 collecting plate 2 is increased, it is difficult to receive the attractive force due to the electrostatic force of the collecting plate 2, and it does not adhere to the collecting plate 2 again and easily falls into the dust box 4. Here, although the dust collection device 1 of Embodiment 3 demonstrated the example whose angle of the inclination part 55 is 45 degree | times, the angle of the inclination part 55 is not limited to this, You may change suitably.

  As described above, the dust collection device 1 of the third embodiment has the same effect as that of the first embodiment. Furthermore, in the dust collection device 1 of Embodiment 3, the 1st dust clogging prevention part 53 and the 2nd dust clogging prevention part 54 each have the inclination part 55 in the front-end | tip part. The inclined portion 55 rubs away the dust from the collecting plate 2 so that high dust removal performance can be exhibited. For this reason, clogging of dust between the collection plate 2 and the brush 3 can be suppressed, and a decrease in the moving speed of the collection plate 2 due to overload of the motor 6 can be suppressed. Therefore, the dust collection device 1 having a stable triboelectric charge amount and dust collection performance and an air conditioner equipped with the dust collection device can be realized.

Embodiment 4 FIG.
The dust collection device 1 according to Embodiment 4 basically has the same configuration as the dust collection device 1 according to Embodiment 3. The dust collecting device 1 of the fourth embodiment is different from that of the third embodiment in that the surface 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 is finely processed. Different from the dust collection device 1. Hereinafter, the dust collection device 1 according to the fourth embodiment will be described focusing on differences from the dust collection device 1 according to the third embodiment. The configuration of the dust collection 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 collection plate included in the dust collection device according to the fourth embodiment. As shown in FIG. 10, the inclined portion 55 of the first dust clogging prevention unit 53 and the second dust clogging prevention unit 54 of the dust collection device 1 of the fourth embodiment has a surface roughness Ra of 0.01 μm or more and 5 μm. It has a micromachined surface 56 that has been micromachined with the following irregularities. When the collection plate 2 is rotated, dust on the surface of the collection plate 2 rises on the inclined portion 55. The microfabricated surface 56 of the inclined portion 55 has a lotus effect, and suppresses 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. For this reason, the dust easily falls into the dust box 4.

  As described above, the dust collection device 1 of the fourth embodiment has the same effect as that of the first embodiment. Furthermore, in the dust collection device 1 according to the fourth embodiment, the inclined portions 55 of the first dust clogging prevention portion 53 and the second dust clogging prevention portion 54 have the finely processed surface 56. And the high dust removal performance can be exhibited by the lotus effect which acts on the fine processing surface 56. For this reason, clogging of dust between the collection plate 2 and the brush 3 can be suppressed, and a decrease in the moving speed of the collection plate 2 due to overload of the motor 6 can be suppressed. Therefore, the dust collection device 1 having a stable triboelectric charge amount and dust collection performance and an air conditioner equipped with the dust collection device can be realized.

Embodiment 5. FIG.
The dust collection device 1 according to the fifth embodiment basically has the same configuration as the dust collection device 1 according to the third embodiment. The dust collection device 1 of the fifth embodiment is different from the dust collection device 1 of the first embodiment in that an air filter 52 is provided. Hereinafter, the dust collection device 1 according to the fifth embodiment will be described focusing on differences from the dust collection device 1 according to the first embodiment. The configuration of the dust collection 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 collection device according to the fifth embodiment. As shown in FIG. 11, the dust collection device 1 of the fifth embodiment includes an air filter 52 that collects dust at the discharge port 14 b on the downstream side of the housing 15. Here, as the air filter 52, a HEPA filter obtained by molding a PP meltblown charged nonwoven 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 as in the dust collection device 1 of the fifth embodiment, the air from which dust in the air has been removed by the collection plate 2 is further purified. High dust collection performance can be obtained.

  As described above, the dust collection device 1 of the fifth embodiment has the same effect as that of the first embodiment. Furthermore, in the dust collection device 1 of the fifth embodiment, the air from which dust and the like have been removed by the collection plate 2 of the dust collection device 1 can be further purified by the air filter 52, and high dust collection performance is obtained. be able to. Here, 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 such as filter replacement every several months is recommended. . The dust collection device 1 of Embodiment 5 is the structure which provided the collection board 2 in the upstream of the HEPA filter with respect to the flow of air. For this reason, the dust load in 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 extended, and both high dust collection performance and long-term dust collection can be achieved.

Embodiment 6 FIG.
In the first to fifth embodiments described above, the characteristic configurations of the dust collection device 1 and the air conditioner described as different embodiments may be combined as appropriate.

  Moreover, in Embodiment 1-Embodiment 5, although the brush 3 showed the structure inserted in the clearance gap between the collection boards 2 toward the upstream from the downstream of the collection board 2, this was shown. It is not limited to. For example, the brush 3 may be configured to 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 disposed 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 has been described, but the material is not limited. For example, a resin such as rubber may be used. The material is not limited.

  In the above-described embodiment, the example 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 is shown, but it is not necessarily required to be integrated. . For example, the first dust clog prevention unit 53 and the second dust clog prevention unit 54 may be provided in the vicinity of the brush 3 as independent dust clog prevention devices. However, even when the first dust clog prevention unit 53 and the second dust clog prevention unit 54 are provided independently from the brush 3, as described above, the thickness of the nonwoven fabric that becomes the brush portion 3b protrudes from the dust clog prevention device. Let And it is preferable to become a structure adjusted so that both a dust clogging prevention apparatus and the brush 3 may adjoin to the collection board 2 by pressing a nonwoven fabric against the collection board 2 and crushing a nonwoven fabric.

  DESCRIPTION OF SYMBOLS 1 Dust collection device, 2 Collection plate, 3 Brush, 3a Connection part, 3b Brush part, 4 Dust box, 4a Tip part, 5 Dust, 6 Motor, 7 Drive control part, 8 1st shaft, 9 2nd shaft, 10 Heat exchange ventilator, 11a, 11b particle sensor, 12 arrows, 14a inlet, 14b outlet, 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 inlet, 22 outdoor air outlet, 23 indoor air inlet, 24 indoor air outlet, 25 linkage 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 Inclination part, 56 Fine processing surface, 57 Pressure member.

Claims (10)

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 having brush portions for rubbing the surface of the collecting plate;
In the direction of movement of the brush with respect to the collecting plate when the collecting plate and the brush move relative to each other, the dust collected by the collecting plate is installed on the front side of the brush. A dust collecting device comprising a dust clogging prevention device for removing from a dust. The brush
A connecting portion that is integrated with the dust clogging prevention device and supports the brush portion;
The dust collection device according to claim 1, further comprising: a pressure member that applies the brush portion and the dust clogging prevention device to the collection plate.   The dust collection device according to claim 2, wherein the pressure received by the brush unit from the collection plate is greater than the pressure received by the dust clogging prevention device.   The dust collection 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 expands from a side closer to the collection plate toward a side farther from the side.   The dust collecting device according to any one of claims 1 to 4, wherein the dust clogging prevention device has irregularities on a surface thereof.   The dust collection device according to claim 5, wherein a 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 7. The dust collection device according to any one of Items 6.   8. The air filter according to claim 1, further comprising an air filter that is installed on a downstream side of the collection plate with respect to the air flow and collects the dust that has passed through the collection plate. Dust collection device.   An air conditioner equipped with the dust collection device according to any one of claims 1 to 8. A plurality of collecting plates that are charged by friction and collect dust, a plurality of brushes having brush portions that rub against the surface of the collecting plate, and a dust clogging prevention device that removes the dust adhering to the collecting plate; In a dust collection device comprising:
A step of installing on the brush the brush portion having a thickness protruding toward the collecting plate side of the dust clogging prevention device;
A method of manufacturing a dust collecting device, the method comprising: pressing the brush portion against the collecting plate to adjust a distance relationship between the brush portion and the dust clogging prevention device and the collecting plate.

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