JP5858599B2 - Air conditioner - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner, and more specifically to an air conditioner that can capture more dust with a filter.

  For example, as shown in Patent Document 1, a general air conditioner (indoor unit) is provided with a filter for removing dust and dust contained in the air before the air is led to the heat exchanger. ing. Normally, this type of filter needs to regularly clean the dust accumulated in the filter, so that the user himself can attach and detach the filter to clean it.

  In order to increase the dust collection efficiency as much as possible, the conventional filter uses PET (polyethylene terephthalate) that is thin and strong in the filter net so as to make the filter mesh as fine as possible.

  However, if the mesh of the filter is set too fine, the ventilation resistance becomes high, which is not preferable. On the other hand, if the mesh is too coarse, coarse dust passes through the filter and adheres to the heat exchanger, which is not preferable for hygiene purposes. In addition, it is difficult to capture powdery dust finer than the mesh with a filter.

JP 2009-168392 A

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air conditioner including a filter with higher dust collection efficiency without increasing the ventilation resistance of the filter. There is.

To achieve the above object, the invention according to 請 Motomeko 1 comprises the air conditioner having a filter disposed along the air inlet for taking air into the indoor unit casing,
A charging brush for frictionally charging the filter; a moving means for moving the charging brush to a contact position and a non-contact position with respect to the filter; and a control unit for controlling at least the moving means, The charging brush has a brush base that rotates about a predetermined rotation axis and brush bristles that are implanted in the brush base, and is in contact with the filter at a first rotational position, and a second rotation. It is a rotating brush that is non-contact at a position, and a driving motor that rotates the rotating brush is used as the moving means,
The rotating brush, at a given position capable of contacting with the filter being disposed along said air inlet, contacted by the drive motor in place against a portion of the filter, to repeat the non-contact A plurality of conductive fibers are spanned between the opposing frames of the filter, and the filter includes a plurality of conductive fibers extending between the opposing frames of the filter so as to intersect the rotating brush. Are incorporated at predetermined intervals,
The control unit includes an upper Symbol air suction by Ri section a portion of the filter disposed along the rotary brush opening amount frictionally the conductive fibers charges generated in a portion of the filter by And a friction charging step for spreading over the entire surface of the filter, and the friction charging step is performed even during operation of the air conditioner.

  According to a second aspect of the present invention, in the first aspect, the filter is made of a material that is more likely to be charged to the negative side than the material of the charging brush in the charging train.

According to a third aspect of the present invention, in the first or second aspect, the rotating brush comprises a first rotating brush that rubs one surface of the filter and a second rotating brush that rubs the other surface of the filter. The first and second rotating brushes are arranged opposite to each other with the filter interposed therebetween.

According to a fourth aspect of the present invention, there is provided an air conditioner having a filter disposed along an air suction port for taking air into an indoor unit housing, and a charging brush for frictionally charging the filter, and the filter Moving means for moving the charging brush to a contact position and a non-contact position, and at least a control unit for controlling the moving means, wherein the charging brush contacts or does not contact the filter at a predetermined position. A brush base that is slidable in a direction to become and brush bristles planted on the brush base, and the moving means is provided integrally with the filter, and the movement of the filter causes the movement of the filter. A brush drive rail that moves the charging brush in a direction toward and away from the filter via a brush base, and a label formed on the filter. A drive gear for moving the filter to a first position where the charging brush contacts the filter and a second position away from the filter via a groove; A plurality of conductive fibers are incorporated at predetermined intervals so as to cross the charging brush,
The control unit reciprocally moves the filter at the first position by the drive gear and partially rubs a part of the filter disposed along the air suction port to thereby remove the filter. A triboelectric charging step is provided, in which a charge generated in a part is spread over the entire surface of the filter through the conductive fiber .

The invention according to claim 5, Oite the preceding claims 4, further to the above stems, is characterized in that the pressure spring for pressing the brush bristles to the filter is provided.

A sixth aspect of the present invention is characterized in that in any one of the first to fifth aspects, the apparatus further comprises dust removing means for removing dust captured by the filter.

According to the first and fourth aspects of the present invention, the charging brush includes a charging brush for frictionally charging the filter, and a moving means for relatively moving the filter and the charging brush in a state of mutual contact. The brush is stretched between one frame facing the filter, and a plurality of conductive fibers are placed on the filter between the other frame facing the filter so as to intersect the charging brush. The electric charge generated in a part of the filter is moved through the conductive fiber by moving the filter or the charging brush so that the charging brush partially rubs the part of the filter by the moving means. The dust that floats in the air due to electrostatic adsorption can be more reliably captured by the filter. Not hunting, you can capture the fine dust than the mesh of the filter. Further, the entire surface of the filter can be uniformly charged without moving the entire surface of the filter and rubbing the charging brush.

  According to the second aspect of the present invention, since the filter is made of a material that is more likely to be charged on the negative side than the material of the charging brush in the charge train, the filter is charged on the negative side. The dust charged on the side can be removed by adsorption.

According to the invention described in claim 3, comprising: a first rotating brush rubbing the one surface of the filter and a second rotary brush for rubbing of the other surface of the filter, first and second charging rotary brush Are disposed opposite to each other with the filter interposed therebetween, so that the entire surface of the filter is triboelectrically charged, so that the electrostatic adsorption force can be further increased, and dust that has passed through the filter can be caught on the back surface of the filter.

According to the invention of claim 5 , each brush base is further provided with a pressing spring that presses the bristles toward the filter, whereby the charging brush can be pressed against the filter with a constant pressure, The charge state of the filter can be made constant.

According to the sixth aspect of the present invention, by further including the filter cleaning means for removing the dust trapped by the filter and cleaning the filter, the charging operation is performed by the charging brush after the filter is cleaned. As a result, it is possible to prevent the charging performance from deteriorating due to dust adhering to the charging brush.

The principal part sectional view which omitted a part of internal structure of the air harmony machine concerning a 1st embodiment of the present invention. The perspective view of the filter of the air conditioner of this invention. (A)-(e) The schematic diagram for demonstrating the various arrangement pattern of the electroconductive thread | yarn provided in the said filter. The schematic diagram which shows the modification of the arrangement pattern of the electroconductive thread | yarn of the said filter. The perspective view which shows the structure of the charging brush of 1st Embodiment. The principal part sectional view when a charging brush is made into a non-contact state with a filter. Explanatory drawing explaining the rotation procedure of the charging brush of 1st Embodiment. The flowchart for demonstrating the procedure of friction charging. The flowchart which shows the relevance of operation | movement with a filter cleaning means and a friction charging means. The principal part sectional view which omitted a part of internal structure of the air harmony machine concerning a 2nd embodiment. The perspective view which shows the structure of the charging brush of 2nd Embodiment. The schematic diagram of the filter of 2nd Embodiment. Explanatory drawing explaining the motion of the filter and charging brush of 2nd Embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. As shown in FIG. 1, this air conditioner (indoor unit) 1 includes a casing 10 supported on a wall surface via a back plate (not shown).

  In this embodiment, the indoor unit 1 is a so-called wall-mounted home air conditioner in which a main body that is long on the left and right is installed on a wall surface. A heat exchanger 2 and a cross flow fan (not shown) are provided in the casing 10. It is supported so as to be bridged in the longitudinal direction of the main body (in the direction perpendicular to the paper surface in FIG. 1). In this example, the heat exchanger 2 is a combination of upper and lower two-stage front-side heat exchangers 21 and one-stage rear-side heat exchanger 22 in a lambda (Λ) type. In the present invention, specific configurations of the heat exchanger 2 and the crossflow fan may be arbitrarily selected according to specifications.

  In addition, an air outlet 17 is provided on the lower surface side of the casing 10, and a wind direction plate and a diffuser (both not shown) are provided at the air outlet, but these configurations are optional in the present invention. It is a component and is not particularly limited.

  The casing 10 includes an upper panel 11 that covers the upper surface of the heat exchanger 2, a front panel 12 that covers the front surface of the heat exchanger 2, and side panels 13 that support the left and right ends of the heat exchanger 2. In this example, each panel is made of a molded product of synthetic resin.

The upper panel 11 and the front panel 12 are provided with an air inlet 14 for taking air into the indoor unit 1. Some of the front panel 12, by the open wolfberry during operation, by increasing the opening area of the air inlet 14, the open panel 15 is provided to increase the air flow rate.

  The open panel 15 is made of a synthetic resin plate and is provided so as to cover a part of the front panel 12 of the indoor unit 1. The lower end of the open panel 15 is rotatably connected to a part of the front panel 12 via a rotating shaft (not shown), and the upper end (free end) side thereof is opened and closed by an opening / closing driving means (not shown). Yes.

  In this example, an open / close driving means using a motor as power is used to open and close the open panel 15, but various actuators such as solenoids may be used in addition to this. Moreover, you may make it open and close using a spring force etc.

  Inside the indoor unit 1, a filter 3 is provided so as to correspond to the air suction port 14. In this example, two filters 3 are provided side by side (paper surface direction in FIG. 1), and each cover the air suction port 14. The filter 3 has the same shape on both the left and right sides.

  The filter 3 is made of a material that is charged to the negative side in the charging train when frictionally charged by a frictional charging unit 4 described later. That is, in this example, the filter 3 is made of polyethylene terephthalate. Examples of materials that are easily charged on the negative side include polyurethane, polyethylene, and polypropylene, but may be arbitrarily selected according to specifications.

  As shown in FIG. 2, the filter 3 is formed in a thin plate shape having a rectangular filter bar 31 and a mesh sheet 32 stretched along the filter bar 31. The filter bar 31 is made of, for example, a tough synthetic resin molded product such as PET, and rack grooves 33 and 33 for feeding the filter 3 back and forth at both ends in the width direction (left and right direction in FIG. 2) of the filter bar 31. Is provided.

  The rack groove 33 is integrally formed with the filter bar 31 and is formed symmetrically at the same left and right pitch in order to make the feed amount of the filter 3 uniform. As described above, the rack groove 33 is used to feed the filter 3 back and forth. In the first embodiment, the filter 3 is fixed, and a friction charging unit 4 described later is provided along the filter 3. It is supposed to move.

  In this example, a part of the filter bar 31 is provided with a detection hole 34 for detecting whether or not the filter 3 is disposed at a predetermined position of the air suction port 14. The detection hole 34 is a through hole that penetrates the filter 3 in the thickness direction, and is detected by a detection switch (not shown) provided on the guide rail of the indoor unit housing 1 so that the control means It is possible to detect whether the filter 3 is arranged at the set position.

  The mesh sheet 32 is made of a synthetic resin such as PET like the filter bar 31 and has a predetermined mesh shape, and in this example, the mesh interval is about 0.3 to 1.0 mm. The material, shape, and the like of the mesh sheet 32 can be arbitrarily changed according to specifications.

Referring also to FIG. 3, the mesh sheet 32, in order to spread the electric load generated by the triboelectric charging unit 4 on the entire surface of the filter 3, the conductive yarns 35 having conductivity is knitted. The conductive yarn 35 is made of a conductive material such as carbon formed in a fiber shape, and is provided in parallel along the moving direction of the filter 3 or the friction charging unit 4 ( vertical direction in FIG. 3A) . Yes.

  In addition to the conductive fiber, the conductive thread 35 includes, for example, a thread formed from a resin kneaded with a conductive material, or a thread such as cotton impregnated with a conductive material. May be arbitrarily selected according to the specifications.

  In this example, as shown in FIG. 3A, the conductive yarn 35 is provided in a straight line from one end (the upper end in FIG. 3A) to the lower end (the lower end in FIG. 3A) of the filter bar 31. The two conductive yarns 35 are arranged in parallel with an interval of 16 mm or less in one frame of the filter bar 31. That is, if the interval is too wide than 16 mm, the electric fields formed by the adjacent conductive yarns 35 do not overlap each other, and it is difficult to charge the entire surface of the filter 3.

In this example, the conductive yarn 35, have been arranged in parallel along the vertical direction of the filter 3, in addition to this, as shown in FIG. 3 (b), it is arranged in parallel to the left and right Direction May be. Furthermore, as shown in FIG. 3 (c), they may be arranged in a lattice shape so as to intersect the vertical direction and the horizontal direction. Moreover, as shown in FIG.3 (d), you may arrange | position diagonally and the arrangement | positioning of the electroconductive thread 35 may be arbitrarily selected according to a specification.

In the case of FIG. 3 (b), (d) , the frictional charging unit 4 to be described later, by rotating a plurality of times in situ, to generate static electricity by rubbing the charging brush 41 in the filter 3. Therefore, in order to spread the electric charge generated by the charging brush 41 over the entire surface of the filter 3, the mesh sheet 3 is provided with a crossover thread 35 a. Prolongation 35a is a thread of the same conductivity as the conductive yarns 35 are incorporated woven mesh sheet 32 so as to short-circuit each conductive yarn 35.

  Further, as shown in FIG. 3 (e), the conductive yarn 35 is knitted more in the mesh sheet 32 in the portion of the filter 3 where the ventilation rate is larger than in other portions so that the charge amount in the portion where the ventilation rate is larger is increased. It may be. That is, in FIG. 3E, two conductive yarns 35 are provided for one frame in the frames on both sides, and five conductive yarns 35 are provided for each frame in the center frame. Yes. Such an embodiment is also included in the present invention. According to this, it is possible to increase the charge amount in the portion where the air flow is large, and to further improve the capture performance.

  Further, the mesh sheet 32 is usually colorless and transparent, and the conductive yarn 35 is black in the case of carbon or the like. Therefore, using the visibility of the conductive yarn 35, a sign such as the mounting direction of the filter 3 may be used by using the weaving of the conductive yarn 35. According to this, not only the function as the conductive yarn 35 but also the function as the display element is added, and the cost of printing or the like can be suppressed.

  In this example, as shown in FIG. 3A, the friction charging unit 4 is stretched across the filter 3 so that all the conductive yarns 35 of the mesh sheet 32 are connected to the friction charging unit. 4 can be touched.

  On the other hand, as shown in FIG. 4, the friction charging unit 4 may be downsized so that a part of the filter 3 can be rubbed with a cantilever instead of being laid across the filter 3 in the width direction. it can. Even in such a case, the filter 3 is provided with the first conductive thread 351 so as to include the friction portion of the friction charging unit 4, and the second conductive thread 352 is disposed so as to intersect the first conductive thread 351. You just have to stretch around the entire surface.

  According to this, since the static electricity generated by the frictional charging unit 4 moves along the plurality of second conductive threads 352 intersecting from the first conductive thread 351, the entire surface of the filter 3 can be charged. Such an embodiment is also included in the present invention.

Filter 3, Ru Tei is disposed upstream of the heat exchanger 2 as gently arched from the top panel 11 by the filter support rails (not shown) toward the front panel 12.

  In the indoor unit 1, a friction charging unit 4 that frictionally charges the filter 3 is provided for one filter, two in this example. Since the friction charging units 4 have the same shape, only one of them will be described below.

  The friction charging unit 4 includes a charging brush 41 for frictionally charging the filter 3. As shown in FIG. 5, the charging brush 41 has a first charging brush 41a disposed on one surface (upper surface in FIG. 1) side of the filter 3 and a second surface (lower surface in FIG. 1) side of the filter 3. The second charging brush 41b is disposed, and they are disposed opposite to each other with the filter 3 interposed therebetween.

  Since both the first charging brush 41a and the second charging brush 41b have the same shape, only the first charging brush 41a will be described below. The first charging brush 41 a includes a brush base 43 (first brush base) that rotates about a predetermined horizontal rotation axis L, and brush hairs 44 that are implanted in the brush base 43.

  The brush base 43 is made of a synthetic resin molded product, and includes a plate-like base 431 on which the brush hairs 44 are planted, and a vertically extending bearing from the both ends of the base 431. It is formed in a U-shape having side plates 432 and 432. In this example, the brush base 43 is formed in a U-shape, but may be any other shape as long as the shape is rotatable around the horizontal rotation axis L.

  Here, the state of being charged with static electricity refers to a state in which the surface electrons move by rubbing objects having different non-conductivity to change the potential of the object surface, and the surface is charged. By charging the filter 3 to −charge, dust having + charge in the air can be adsorbed by the filter 3.

  Therefore, the brush bristles 44 are made of a material that is easily charged with a positive charge when rubbed against the filter 3. That is, in this example, nylon that is easily charged on the + side is used. In addition to this, as a material that is easily charged on the + side, various furs, glass, and the like may be arbitrarily selected according to specifications. The same applies to the planting conditions of the bristle 44.

  Here, in order for the filter 3 to be negatively charged, it is sufficient if the material of the brush bristle 44 is located on the + side in the charge train with respect to the material constituting the filter 3. As long as an electric potential is generated between them, the bristle 44 may be charged to the negative side and the filter 3 may be charged to the positive side.

  In this example, the charging brush 41 is used as the frictional charging means. However, the frictional charging is more easily performed as the material and shape of the frictional material are different, and particularly those having good adhesion are easily charged. Therefore, instead of the charging brush 41, a brush base 43 may be provided that is easily adhered to the filter 3 such as a sheet or a sponge.

  When friction charging is performed during the air conditioner operation, it is better to remove the charge of either the contacted body (the filter 3 or the charging brush 41). That is, by grounding one of them, the amount of charge (potential difference) can be increased and the attractive force can be increased.

  For example, if the potential difference ΔV obtained by friction is 10 kV, if one (filter) remains at -5 kV, the other (brush) will be +5 kV, but if one (filter) is grounded (0 kV) A potential of +10 kV can be generated on the other (brush). That is, assuming that dust in the air has almost no potential, increasing the potential of the filter allows more dust to adhere to the filter. Thereby, the effect of frictional charging can be obtained more efficiently when charging again. In this example, the potential difference ΔV is intended to obtain a potential difference of about 2 to 8 kV by rubbing 3 to 4 times with the charging brush 41 although it depends on conditions such as humidity.

  The charging brush 41 is rotationally driven by a drive motor (both not shown) controlled by the control means. As shown in FIG. 6, the first and second charging brushes 41 a and 41 b rotate about 90 ° on the spot around the horizontal rotation axis (in FIG. 6, the axis perpendicular to the paper surface), thereby causing the brush hair 44 to move. The filter 3 is charged by repeating contact and non-contact with the filter 3. In this example, the first charging brush 41a rotates clockwise, and the second charging brush 41b rotates counterclockwise.

  An example of the procedure of the friction charging operation (friction charging step) will be described with reference to FIGS. 7A to 7C and the flowchart of FIG. First, the control unit (both not shown) starts the friction charging mode by operating the remote controller or an operation program stored in the built-in memory of the indoor unit 1 (step ST01). Here, the friction charging operation (friction charging step ST) of the present invention is preferably performed before or during the operation of the air conditioner. According to this, it is possible to recover the electric charge reduced during the stop or operation.

  When the friction charging operation is started, the control unit first detects whether the filter 3 is disposed at a predetermined initial position. At the same time, it is detected whether the charging brush 41 is at a predetermined initial position. (Step ST02). Next, the control unit issues a command to the drive motor of the charging brush 41, and as shown in FIG. 7A, the first charging brush 41a is rotated counterclockwise and the second charging brush is rotated approximately 90 ° clockwise. The charging brush 41 is brought into contact with the filter 3 (step ST03).

  Next, when setting the friction condition for frictional charging, the control unit measures the current humidity around the filter 3 from a humidity sensor (not shown) (step ST04). Based on the humidity data, the control unit obtains and analyzes the humidity data from a humidity sensor (not shown) in accordance with a predetermined control program incorporated in advance.

  In the high humidity mode, the control unit first issues a rotation command to the drive motor of the charging brush 41. In response to this, as shown in FIG. 7B, the drive motor reciprocally rotates the charging brush 41 in accordance with the humidity condition to rub the filter 3 (step ST05).

  Here, in the case of high humidity, the charge is easy to move, so that it is difficult to be charged. Therefore, it is necessary to perform frictional motion with the brush for a long time (multiple times). Therefore, the control unit continues to reciprocate the charging brush 41 until the set time T1 in the high humidity mode comes (step ST06).

  On the other hand, when the control unit determines that the humidity is “low (normal)”, the control unit is operated in the low humidity (normal) mode.

  In the normal operation mode, the control unit issues a rotation command to the drive motor of the charging brush 41 (step ST07). In response to this, the charging brush 41 repeats the rotating operation until the set time T2 (T1> T2) comes. (Step ST08).

  As the charging brush 41 rubs against the filter 3, charges are accumulated in the mesh sheet 32 of the filter 3 and are charged with static electricity. At that time, since the electric charge is conveyed to the entire surface of the filter through the conductive yarn 35, the entire surface of the filter 3 can be uniformly charged.

When the set time T1, T2 has elapsed, the control section issues a command to the drive motor of the charging brush 41, as shown in FIG. 7 (c), the first charging brush 41a clockwise, the second charging brush counterclockwise The charging brush 41 is rotated so as not to contact the filter 3 (step ST09). When the charging brushes 41 a and 41 b are separated from the filter 3, the charge is transferred to the entire surface of the filter 3 through the conductive yarn 35 of the filter 3 and is uniformly charged.

  By the way, when the indoor unit 1 is driven in a state where the filter 3 is charged in this way, when the air passes through the filter 3, fine dust contained in the air is adsorbed to the filter 3 by static electricity. As the amount of air passing through 3 increases, the electric charge charged in the filter becomes weaker, that is, the adsorption ability decreases. Similarly, since the amount of air passing through the filter 3 increases as the air flow increases, the charge is weakened.

  Further, the charge is weakened by dust accumulated on the filter 3. Therefore, in order to maintain the electrostatic adsorption capability during operation, it is preferable to perform the friction charging operation even during the operation of the indoor unit 1.

  In this example, the air conditioner 1 is provided with a filter cleaning unit that removes dust adhering to the filter 3 in addition to the charging friction unit 4. As the filter cleaning unit, for example, a general automatic filter cleaning unit currently used as shown in Patent Document 1 is used. In the friction charging unit 4 of the present invention, it is preferable that the friction work unit is charged after cleaning in conjunction with the filter cleaning operation.

That is, as shown in FIG. 9, when it is determined that the set time t is longer than the set time t1 when the process proceeds to the charging step ST05 or step ST07 in FIG. 8, the control unit completes the previous filter cleaning. The accumulated operation time S is counted, and when the accumulated operation time S is within 0 to 10 hours (step ST10), the charging friction unit 4 is operated at the friction operation interval m1 during that period (step ST11). The friction operation interval m is a time interval between the latest friction operation and the next friction operation.

  When the integrated operation time S is 10 to 20 hours (step ST12), the control unit operates the charging friction unit 4 at the friction operation interval m2 (step ST13). When the accumulated operation time S is 20 to 30 hours (step ST14), the charging friction unit 4 is operated at the friction operation interval m3 (step ST15).

  As the accumulated operation time S increases, dust accumulates on the filter 3 and the charge amount of the charge decreases. Therefore, the friction operation time is m1> m2> m3. Finally, when the accumulated operation time S exceeds 30 hours, the control unit determines that it is a filter cleaning time (step ST16), and drives the filter cleaning unit (not shown) to perform the filter cleaning, or prompts the user for the filter cleaning time. I will guide you.

  In this example, the frictional charging unit 4 charges the filter 3 by reciprocally turning the pair of upper and lower charging brushes 41a and 41b by 90 ° on the spot, but other methods may be used. Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same referential mark was attached | subjected to the location considered the same as the said 1st Embodiment or the same.

  The friction charging unit 4 of the air conditioner 1 according to the second embodiment includes a pair of upper and lower charging brushes 41a and 41b similar to the first embodiment, but the friction charging method is different. Also in the second embodiment, since the charging brushes 41a and 42b have the same shape, only one charging brush 41a will be described below.

  As shown in FIG. 11, the charging brush 41 a includes a flat brush base 43 (second brush base) and brush bristles 44 that are implanted in the brush base 43. The brush base 43 is formed in a flat plate shape, and brush hairs 44 are planted in two portions on one surface thereof.

  At the center and both ends of the brush base 43, guide grooves 433 for guiding brush rails 36 provided on the filter 3 described later are provided. The guide groove 433 is a notch groove formed one step lower than the surface of the brush base 43, and is formed along the moving direction of the filter 3 (the paper surface direction in FIG. 11).

  A pressing spring 45 that presses the brush bristles 44 toward the filter 3 is provided on the back side of the brush base 43. The pressing spring 45 is composed of a compression spring that constantly pushes the brush base 43 toward the filter direction, and is provided at two locations in this example. In this example, the other end side of the pressing spring 45 is installed on the base 46 side of the friction charging unit 4, but the number and positions of the pressing springs 45 are not particularly limited.

  Referring to FIG. 12, the filter 3 has substantially the same shape as the filter 3 of the first embodiment, but the filter bar 31 in the moving direction of the filter 3 is used to separate the charging brushes 41a and 41b from each other. A brush drive rail 36 is provided.

  The brush drive rail 36 is formed of convex ribs provided symmetrically in the vertical direction on both sides of the terminal end side (the upper end side in FIG. 12) of the filter bar 31, and is integrally formed along the filter bar 31. The brush drive rail 36 is formed one step higher than the filter bar 31, and a tapered surface 361 is provided at the end thereof.

  A rack groove 33 for moving the filter 3 back and forth during frictional charging is provided on the other end side (lower end side in FIG. 12) of the brush drive rail 36 of the filter bar 31. The rack groove 33 is engaged with a drive gear 5 provided inside the indoor unit 1, and the filter 3 slides forward and backward through the drive gear 5.

  According to this, as shown in FIG. 13, during operation of the air conditioner, the brush 3 of the charging brushes 41 a and 41 is lifted by the brush drive rail 36 by arranging the filter 3 at the position shown in FIG. 13. Therefore, the charging brushes 41 a and 41 b are separated from each other with the filter 3 interposed therebetween, and the brush hair 44 is not in contact with the filter 3.

On the other hand, at the time of friction charging, as shown in FIG. 10, the filter 3 moves rearward via the drive gear 5, and the brush base 43 is disengaged from the brush drive rail 36. , 41b are pressed against and brought into contact with the filter 3 side.

In this state, the driving gear 5 by reciprocatingly rotated by moving back and forth the filter 3 in small increments, bristles 44 is charged by friction filter 3. In the second embodiment, the conductive yarn 35 is not drawn on the mesh sheet 32 for convenience of drawing, but actually includes the same conductive yarn 35 as in the first embodiment.

In the second embodiment as well, it is preferable to further include a filter cleaning device as in the first embodiment. According to this, it is possible to prevent dust from accumulating on the filter 3 and reducing the electrostatic adsorption performance due to charging. More specifically, by combining the brush for removing dust attached to the filter 3 and the charging brush, adsorption by dust friction and cleaning of the filter can be performed with a minimum configuration.

  In this example, the air conditioner 1 has been described by taking a general wall-mounted home air conditioner as an example, but the friction charging unit 4 of the present invention can be applied to a larger wall-mounted air conditioner, It can also be applied to commercial air conditioners such as ceiling-ceiling types. Furthermore, it can be used not only for air conditioners but also for filters such as dehumidifiers, humidifiers, and air purifiers.

DESCRIPTION OF SYMBOLS 1 Air conditioner 10 Casing 2 Heat exchanger 3 Filter 31 Filter bar 32 Mesh sheet 33 Rack groove 35 Conductive thread 36 Filter guide rail 4 Friction charging unit 41a, 41b Charging brush 43 Brush stand 44 Brush hair 45 Pressing spring 5 Drive gear

Claims (6)

In an air conditioner having a filter arranged along an air suction port for taking air into an indoor unit housing,
A charging brush for frictionally charging the filter; a moving means for moving the charging brush to a contact position and a non-contact position with respect to the filter; and a control unit for controlling at least the moving means,
The charging brush has a brush base that rotates about a predetermined rotation axis and brush bristles that are implanted in the brush base, and is in contact with the filter at a first rotational position, and a second rotation. It is a rotating brush that is non-contact at a position, and a driving motor that rotates the rotating brush is used as the moving means,
The rotating brush, at a given position capable of contacting with the filter being disposed along said air inlet, contacted by the drive motor in place against a portion of the filter, to repeat the non-contact A plurality of conductive fibers are spanned between the opposing frames of the filter, and the filter includes a plurality of conductive fibers extending between the opposing frames of the filter so as to intersect the rotating brush. Are incorporated at predetermined intervals,
The control unit includes an upper Symbol air suction by Ri section a portion of the filter disposed along the rotary brush opening amount frictionally the conductive fibers charges generated in a portion of the filter by An air conditioner comprising a frictional charging step that spreads over the entire surface of the filter via the air conditioner, and the frictional charging step is performed even during operation of the air conditioner. 2. The air conditioner according to claim 1, wherein the filter is made of a material that is more easily charged on the negative side than the material of the rotating brush in the charge train. The rotating brush has a first rotating brush that partially rubs one surface of the filter and a second rotating brush that partially rubs the other surface of the filter, and the first and second The air conditioner according to claim 1 or 2, wherein the rotating brushes are arranged to face each other with the filter interposed therebetween. In an air conditioner having a filter arranged along an air suction port for taking air into an indoor unit housing,
A charging brush for frictionally charging the filter; a moving means for moving the charging brush to a contact position and a non-contact position with respect to the filter; and a control unit for controlling at least the moving means,
The charging brush has a brush base that is slidable in a direction that is in contact with or not in contact with the filter at a predetermined position, and brush bristles that are implanted in the brush base,
The moving means includes a brush drive rail that is provided integrally with the filter and moves the charging brush in a direction approaching and separating from the filter via the brush base as the filter moves. And a drive gear for moving the filter to a first position where the charging brush contacts the filter and a second position away from the filter via a rack groove formed in the filter. Along with the filter, a plurality of conductive fibers are incorporated at predetermined intervals so as to intersect the charging brush,
The control unit reciprocally moves the filter at the first position by the drive gear and partially rubs a part of the filter disposed along the air suction port to thereby remove the filter. An air conditioner comprising: a frictional charging step for spreading a charge generated in a part over the entire surface of the filter through the conductive fiber .   The air conditioner according to claim 4, wherein the brush base is further provided with a pressing spring that presses the brush hair toward the filter.   The air conditioner according to any one of claims 1 to 5, further comprising filter cleaning means for removing dust trapped by the filter and cleaning the filter.

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