JP2008302283A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner surely removing not only dust attached to a pre-filter and removed by tilted piles of the rotary brush, but also dust deposited between a rotary brush and a dust removing plate. <P>SOLUTION: The circular pre-filter 20 rotatably provided in the opening 13 of an attached frame 12 provided to the front face side of a main body casing 2, an electric fan, and a dust removing motor rotating the pre-filter 20 are provided in the air duct of the main body casing 2 having an air duct introducing atmospheric air sucked from an air suction port to an air blow-out port. The rotary brush to the periphery of which a plurality of tilted piles are provided, and which is brought into contact with the front face of the pre-filter 20 and is driven by the rotation of pre-filter 20, the dust removing plate which is brought into contact with the rotary brush and removes the attached dust, and an automatic cleaning device 30 having a dust collection box 44 are provided to the front surface of the pre-filter 20. The pre-filter 20 is constituted to rotate clockwise or counterclockwise by a pre-filter inverting mechanism. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioner having an air cleaning function, and more particularly to an air conditioner having means for removing dust adhering to a prefilter for capturing coarse dust in the air. is there.

  Conventionally, in an air conditioner in which a fan motor for driving a pre-filter, a main filter and a fan is arranged in an air path provided in a main body and leading air sucked from an air suction port to an air blow-out port, A dust removing motor for rotating the pre-filter, a rotating brush that contacts the surface of the rotating pre-filter and removes dust adhering to the pre-filter, and a spatula member that scrapes off the dust collected by the rotating brush; And the dust scraped off by the spatula member is dropped into the dust collecting storage box (see, for example, Patent Document 1).

JP 2007-38215 A (page 4-6, FIGS. 1-4)

  In the air conditioner of Patent Document 1, dust collected by the inclined pile of the rotating brush is scraped off by the spatula member and falls into the dust storage box. The collected dust may accumulate between the rotating brush and the spatula member, and may not fall into the dust storage box.For this reason, the dirt piled up on the rotating brush can be removed to remove dust adhering to the prefilter. It could be difficult.

  The present invention has been made in order to solve the above-described problems. The dust adhered to the prefilter and removed by the inclined piles of the rotating brush, as well as the dust accumulated between the rotating brush and the dust removing plate, is surely obtained. An object of the present invention is to provide an air conditioner that can be removed.

  In the air conditioner according to the present invention, in the air passage of the main body case having an air passage for guiding outside air sucked from the air inlet to the air outlet, in the opening of the mounting frame provided on the front side of the main body case. A circular prefilter, an electric fan, and a dust removal motor that rotationally drives the prefilter are provided, and a plurality of inclined piles are provided on the outer periphery on the front side of the prefilter. An automatic cleaning device provided with a rotating brush that contacts the front surface of the filter and is driven by the rotation of the prefilter, a dust removing plate that removes dust attached to the rotating brush, and a dust collection box is provided. Can be rotated clockwise or counterclockwise by a pre-filter reversing mechanism.

  According to the present invention, not only the dust adhered to the prefilter and removed by the inclined pile of the rotating brush, but also the dust accumulated between the rotating brush and the dust removing plate can be reliably removed. It can always be kept clean and the outside air suction efficiency can be improved, and the inclined pile of the rotating brush can be prevented from being stained.

  1 is a front view of the air conditioner according to an embodiment of the present invention with the front panel removed, FIG. 2 is a cross-sectional view taken along the line AA with the front panel of FIG. 1 attached, and FIG. It is BB sectional drawing of FIG. 1 which abbreviate | omitted. In the present embodiment, the case where the present invention is implemented in an air purifier that is a kind of air conditioner will be described.

  In the figure, a front panel 3 having an air suction port 4 is detachably mounted on the front side of a main body case 2 constituting the air purifier 1, and in the air passage formed in the main body case 2. A pre-filter 20 that removes large dust from the front side (upstream side), a main filter 5 that removes dust in the air, and an activated carbon filter 6 that adsorbs and removes odorous components are sequentially arranged toward the downstream side. ing. Reference numeral 7 denotes an air outlet provided in the upper part of the main body case 2. In the embodiment, the main filter 5 is constituted by a HEPA (High Efficiency Particulate Air) filter having a collection rate of 99.97% or more for particles having a powder diameter of 0.3 μm.

Further, in the air passage, outside air that has been sucked in from the air suction port 4 passes through the pre-filter 20, the main filter 5, and the activated carbon filter 6 to the outside of the main body case 2 from the air blowing port 7 on the downstream side of the main filter 5. An electric fan 8 including a fan 9 for blowing out and a motor 9 a for driving the fan 9 is provided.
A power switch 10 is provided on the upper surface of the main body case 2, and a control unit 11 is provided above the air passage in the main body case 2 and controls the entire operation of the air purifier 1. In addition, this control part 11 is provided with the timepiece part which time-measures the driving | running time of the air cleaner 1, and carries out integral holding.

  Reference numeral 12 denotes a rectangular mounting frame on which the pre-filter 20 is rotatably and detachably mounted, and is attached to the front opening of the main body case 2, and is provided with a circular opening 13. A support body 14 extending in the radial direction is provided in a cross shape on the back side of the opening 13, and a support shaft 15 having a screw hole at the tip is provided at the intersection (center portion). It is erected.

Reference numeral 16 denotes a dust removal motor attached to one side of the attachment frame 12. The dust removal motor 16 is preferably a motor that can regulate the rotation direction, such as a stepping motor. However, in order to rotate the prefilter 20, a rotational torque of about 1 kg · cm is required. Requires a gear mechanism for increasing the torque, which makes the structure complicated and increases the cost.
For this reason, in this invention, the AC synchronous motor which used the permanent magnet for the rotor which can obtain said rotational torque easily for the dust removal motor 16 was used. The dust removal motor 16 is configured to be able to rotate either forward or reverse at a constant rotational speed, and the rotational direction at the time of activation is not restricted, and it reverses when a certain load is applied during rotation. ing. Reference numeral 17 denotes an output gear of the dust removal motor 16.

  As shown in FIG. 4, the pre-filter 20 has a ring-shaped frame 21 having a size that can be inserted into the opening 13 of the mounting frame 12 so as to be rotatable and detachable. It is formed concentrically with the boss 22 provided in the center portion with the joint hole 23, the plurality of radiation ribs 24 provided at substantially equal intervals between the frame body 21 and the boss 22, and the frame body 21. Circular ribs 25 connecting the radiation ribs 24 are provided.

  Further, four substantially triangular cutout portions 26 are provided at 90 ° intervals from the front surface side of the frame body 21 to a part of the outer periphery. The direction side is formed substantially perpendicularly toward the central portion (hereinafter referred to as the abutting portion 26a), and has a gentle inclined surface in the counterclockwise direction. Note that the cutout portions 26 are not limited to four places, and may be any two or more places at almost equal intervals in the circumferential direction.

Further, a gear 27 (hereinafter referred to as a first gear) connected to the output gear 17 of the dust removal motor 16 via the intermediate gear 18 is provided on the back surface side of the frame body 21, and the boss A gear 28 (hereinafter referred to as a second gear) is provided on the outer periphery of the lower portion of 22.
A filter net 29 bonded to the frame body 21, the radiation rib 24 and the circular rib 25 is stretched on the front side of the entire region surrounded by the frame body 21.

The pre-filter 20 configured as described above is pivotally supported by fitting the fitting hole 23 provided in the boss 22 to the support shaft 15 of the mounting frame 12, and is accommodated in the opening 13 so as to be placed on the outer periphery of the opening 13. It is held by a plurality of pre-filter pressers 18 provided so as to be rotatable, and is supported on the mounting frame 12 so as to be rotatable and detachable.
Then, the attachment frame 12 to which the prefilter 20 is attached is inserted into the front opening of the main body case 2 and fixed. At this time, the front side of the frame body 21 of the prefilter 20 slightly protrudes from the front surface of the mounting frame 12, and the first gear 27 provided on the frame body 21 of the prefilter 20 is connected to the dust removal motor via the intermediate gear 18. It is connected to 16 output gears 17. In addition, after attaching the attachment frame 12 to the main body case 2, the prefilter 20 may be attached.

Reference numeral 30 denotes an automatic cleaning device for the prefilter 20, as shown in FIGS. 5 and 6, a unit case 31 slightly longer than the radius of the prefilter 20, and a detachable attachment to the unit case 31, which will be described later. And a dust collection box 44 for collecting the dust removed from the prefilter 20.
The unit case 31 is provided with a brush chamber 32 having an opening on the pre-filter 20 side (back side) and a dust collection box housing portion 33 having a front side opening at a lower portion thereof. Reference numeral 34 denotes a guide rail for the dust collection box 44. Reference numeral 35 denotes a fitting portion that is provided at one end of the brush chamber 32 (on the center side of the prefilter 20) and is fitted to the boss 22 of the prefilter 20, and a cylindrical portion 38 that is fitted to the support shaft 15 of the mounting frame 12. Is provided.

  In the brush chamber 32, a plurality of inclined piles 36a (see FIG. 9) are provided on the outer periphery with a length substantially equal to the radius of the prefilter 20 and substantially the radial width of the net 29. A rotating brush 36 is disposed so that the portion is rotatably supported by the unit case 31 and removes dust adhering to the surface of the net 29 of the pre-filter 20. Reference numeral 37 denotes a third gear which is provided at one end of the shaft of the rotary brush 36 in the fitting portion 35 and meshes with the second gear 28 of the pre-filter 20.

Reference numeral 39 denotes a dust removing plate having a length substantially the same as that of the rotating brush 36 attached in the vicinity of the rotating brush 36 on the back side of the brush chamber 32. The dust removing plate 39 is substantially L-shaped as shown in FIG. The scraping portion 41 having a wave-shaped tip is bent obliquely upward at a predetermined angle θ with respect to the mounting portion 40, and rotates by contacting with the inclined pile 36 a of the rotating brush 36. The dust adhering to the brush 36 is scraped off.
An attachment arm 42 is provided on the other side of the unit case 31, and a locking portion 43 that locks in a positioning hole (not shown) provided in the mounting frame 12 is provided on the back side.

As shown in FIG. 3, the automatic cleaning device 30 configured as described above fits the cylindrical portion 38 of the fitting portion 35 of the unit case 31 to the boss 22 from the front side of the pre-filter 20, and rotates the brush 36. The third gear 37 is meshed with the second gear 28 of the pre-filter 20. Then, the locking portion 43 of the mounting arm 42 is locked and fixed in the positioning hole of the mounting frame 12, and the screw 45 inserted through the screw insertion hole provided at the top of the fitting portion 35 is replaced with the screw hole of the support shaft 15. Screw in and fix.
Accordingly, the automatic cleaning device 30 is fixed substantially horizontally to one side of the front side of the prefilter 20, and the inclined pile 36 a of the rotating brush 36 contacts the net 29 of the prefilter 20.

  Reference numeral 50 denotes a rotation stopper that is rotatably supported by a shaft 52 in the vicinity of the opening 13 of the mounting frame 12, as shown in FIG. 8 (FIG. 8 shows a state in which the stopper guide 51 is removed). 53 is formed heavy, and rotates clockwise by its own weight about the shaft 52, and is always in sliding contact with the outer peripheral surface of the frame body 21 of the pre-filter 20. The rotation stopper 50 and the notch 26 provided in the frame 21 of the prefilter 20 constitute a prefilter inversion mechanism.

Next, the operation of the present invention configured as described above will be described.
When the power switch 10 is turned on, the fan motor 9a of the electric fan 8 is energized and the fan 9 rotates. As the fan 9 rotates, outside air is sucked from the air suction port 4, large dust contained therein is captured by the pre-filter 20, dust is then removed by the main filter 5, and odorous components are adsorbed by the activated carbon filter 6. Clean air is blown out from the air outlet 7 to the outside.

  On the other hand, the dust removing motor 16 is energized by the control unit 11 periodically or at an arbitrary time. The rotation of the output gear 17 of the dust removal motor 16 driven to rotate is transmitted to the first gear 27 provided on the frame body 21 of the pre-filter 20 via the intermediate gear 18, and as shown in FIG. For example, the filter 20 is rotated in the direction of arrow a (clockwise direction). At this time, the distal end portion 53 of the rotation stopper 50 is in sliding contact with the outer peripheral surface of the frame body 21. At the same time, the rotation of the prefilter 20 is transmitted from the second gear 28 to the third gear 37, and as shown in FIG. 9, the rotating brush 36 is rotated in the direction of arrow c (the same direction as the prefilter 20).

In this case, the speed V ₂ of the rotating brush 36 is decelerated by the second and third gears 28 and 37 and is slower than the speed V ₁ of the pre-filter 20 so that V ₂ <V _1. Thus, the dust adhering to the pre-filter 20 is collected and removed by the inclined pile 36a of the rotary brush 36. At this time, since the inclined pile 36a of the rotary brush 36 is inclined in a direction opposite to the rotation direction of the rotary brush 36, for the pre-filter 20 is in contact with the forward first direction by V _1> V ₂ Pre Since the filter 20 is in contact with a relatively reverse eye, a dust collecting function can be exhibited.

  In this way, a part of the dust removed from the pre-filter 20 falls from the rotary brush 36 into the dust collection box 44 and a part of the dust adheres to the rotary brush 36. It is scraped off by the corrugated scraping portion 41 of the dust removing plate 39 and falls into the dust collecting box 44. When dust accumulates in the dust collection box 44, it is pulled out of the unit case 31 and discarded.

  In the air cleaner 1 equipped with the automatic dust removing device 30 as described above, dust collected by the inclined pile 36a of the rotating brush 36 due to long-term use is removed from the rotating brush 36 and the dust as shown in FIG. It may accumulate between the plates 39 (indicated by reference numeral 55) and may not fall into the dust collection box 44. Therefore, the inclined pile 36a of the rotating brush 36 is contaminated with the dust 55, and the prefilter 20 cannot be removed.

By the way, in the present invention, an AC synchronous motor is used as the dust removal motor 16. However, since the rotation direction at the start-up is not restricted as described above, the dust-removal motor 16 has a positive direction at the start-up. Or do not know whether to rotate in the opposite direction.
Now, when the dust removal motor 16 rotates in the forward direction and the prefilter 20 rotates in the direction of arrow a (clockwise direction) at startup, the tip 53 of the rotation stopper 50 is placed on the outer peripheral surface of the frame body 21 of the prefilter 20. Accordingly, the dust removal motor 16 and the prefilter 20 driven by the motor 16 continue to rotate in the same direction, and the rotating brush 36 removes dust attached to the net 29.

  At startup, when the dust removal motor 16 rotates in the reverse direction, the pre-filter 20 rotates in the direction of the arrow b (counterclockwise direction). The filter 20 falls into the cutout portion 26 of the frame body 21 and abuts against the abutting portion 26a so that a large load is applied to the dust removal motor 16. Therefore, the dust removal motor 16 reverses and rotates in the forward direction. As a result, the prefilter 20 also rotates in the direction of arrow a (clockwise direction), and the dust attached to the net 29 of the prefilter 20 is removed by the rotating brush 36.

  Until the dust removal motor 16 rotates in the reverse direction and the tip 53 of the rotation stopper 50 falls into the notch 26, that is, in the present embodiment, the prefilter 20 rotates by a quarter of the maximum. In the meantime, as shown in FIG. 10, the rotating brush 36 rotates in the direction of the arrow d, so that the dust removal of the prefilter 20 is not performed. However, the dust 55 accumulated between the rotary brush 36 and the dust removal plate 39 is scraped by the inclined pile 36 a and falls into the dust collection box 44.

  According to the present invention configured as described above, the dust attached to the pre-filter 20 can be easily removed by the rotating brush 36 of the automatic cleaning device 30, and the dust attached to the rotating brush 36 is further removed from the dust removing plate. Since the pre-filter 20 can always be kept clean, the outside air suction efficiency can be greatly improved.

  In addition, since the prefilter 20 can be rotated in the clockwise direction and the counterclockwise direction by the dust removal motor 16, the prefilter 20 is rotated in the counterclockwise direction, and the rotating brush 36 interlocked therewith is provided. By rotating in the opposite direction, the dust 55 accumulated between the rotating brush 36 and the dust removing plate 39 can be reliably removed by the inclined pile 36a provided on the rotating brush 36. Therefore, the inclined pile 39 of the rotating brush 36 is provided. Can prevent dirt.

  Furthermore, although the rotational direction at the time of starting is not controlled for the dust removal motor 16, a synchronous motor that reverses the rotational direction when a certain load is applied during the rotation is used, and the outer periphery of the frame 21 of the pre-filter 20 is used. Are provided with a plurality of notches 26 at substantially equal intervals, and when the prefilter 20 rotates in the clockwise direction, it slides on the outer peripheral surface, rotates counterclockwise, and the rotating brush 36 interlocked therewith is opposite. Rotation stopper 50 is provided to apply a large load to the rotation of the pre-filter 20 by dropping into the notch 26. When a large load occurs in the pre-filter 20, the rotation direction of the dust removal motor 16 is reversed. Since the prefilter 20 is rotated in the clockwise direction, the rotary brush 3 can be constructed with a simple and inexpensive structure without providing a reduction mechanism or the like in the dust removal motor. It is possible to remove dust 55 deposited between the inclined pile 39 and.

  Further, by providing a plurality (n) of notches 26 at almost equal intervals on the frame body 21 of the pre-filter 20, the counter-clockwise rotation of the pre-filter 20 is restricted to 1 / n rotation. Since the dust 55 accumulated between the rotating brush 36 and the dust removing plate 39 can be removed by the rotation, the dust removing action by the rotating brush 36 in the clockwise direction of the pre-filter 20 is not hindered.

  In the above description, the case where the present invention is implemented in an air purifier that is a kind of air conditioner is shown, but the present invention is not limited to this, and the present invention is also implemented in an air conditioner having another structure. Can do.

It is a front view of the state which removed the front panel of the air conditioner concerning one embodiment of the present invention. It is AA sectional drawing of the state which attached the front panel of FIG. It is BB sectional drawing which abbreviate | omitted a part of FIG. It is a perspective view of the pre filter of FIG. It is a front perspective view of the automatic cleaning apparatus of FIG. FIG. 6 is a rear perspective view of FIG. 5. It is a perspective view of the dust removal plate of FIG. It is a principal part enlarged view of FIG. It is operation | movement explanatory drawing of an automatic cleaning apparatus. It is operation | movement explanatory drawing of an automatic cleaning apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Air washer, 2 Main body case, 3 Front panel, 4 Air suction inlet, 7 Air blower outlet, 8 Electric fan, 12 Mounting frame, 13 Opening part, 16 Dust removal motor, 20 Pre filter, 21 Frame, 26 Cut Notch portion, 26a contact portion, 27 first gear, 28 second gear, 29 net, 30 automatic cleaning device, 31 unit case, 36 rotating brush, 36a inclined pile, 37 third gear, 39 dust removing plate, 50 rotation stopper, 53 tip.

Claims (4)

In the air passage of the main body case having an air passage for guiding the outside air sucked from the air suction port to the air outlet, a circular shape rotatably disposed in the opening of the mounting frame provided on the front surface side of the main body case. A prefilter, an electric fan, and a dust removal motor for rotationally driving the prefilter are provided, and a plurality of inclined piles are provided on the outer periphery of the prefilter so as to come into contact with the front surface of the prefilter. A rotary brush that is driven by the rotation, a dust removing plate that removes dust attached to the rotary brush, and an automatic cleaning device including a dust collection box,
An air conditioner configured so that the prefilter can be rotated in a clockwise direction or a counterclockwise direction by a prefilter inversion mechanism.   2. The air conditioner according to claim 1, wherein the dust removal motor is a synchronous motor whose rotation direction at startup is not restricted and whose rotation direction is reversed when a load exceeding a certain level is applied during rotation. .   The prefilter inversion mechanism includes a plurality of notch portions provided on the outer periphery of the prefilter at substantially equal intervals, one end pivotally supported on the mounting frame, and the other end in sliding contact with the outer periphery of the prefilter. The notch is formed into a substantially triangular shape having a substantially vertical abutting portion facing the center in the clockwise direction of the prefilter and an inclined surface in the counterclockwise direction. The air conditioner according to claim 1 or 2, wherein the air conditioner is formed.   4. The air conditioner according to claim 3, wherein when n notch portions of the prefilter inversion mechanism are provided, the rotation range of the prefilter in the counterclockwise direction is a maximum of 1 / n rotation.

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