JP5401189B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner having a function of automatically cleaning an air filter.

  The indoor unit of the air conditioner includes an air filter on the upstream side of the ventilation path of the heat exchanger accommodated in the indoor unit body, filters the indoor air sucked into the body, and heats only clean air. Lead to. The dust remains in the air filter, and the dust attached to the air filter accumulates over a long period of use, and clogging progresses.

  If left as it is, the amount of air introduced into the heat exchanger is reduced due to the adhering dust, and the heat exchange efficiency is lowered. The user needs to remove the air filter at appropriate time intervals and remove dust from the air filter. However, since this operation is troublesome and troublesome, the air filter is easily left unattended.

  For example, [Patent Document 1] discloses an air conditioner in which a moving path for moving a filter is formed in a space between a casing and a heat exchanger, and a cleaning unit for cleaning the filter is provided in the middle of the moving path. It is disclosed. The moving path is provided with a U-shaped folded portion, and the attached dust is automatically removed while the air filter is disposed in the indoor unit main body.

  [Patent Document 2] discloses an air conditioner including a slit-shaped insertion / removal port between the front end of the upper panel and the front end of the lower panel so that the filter can be inserted into and removed from the front surface of the main body. Yes. The filter protrudes from the insertion / removal port, and dust is captured by a brush provided inside the insertion / removal port and collected in the dust box.

Japanese Patent No. 4199760 JP 2005-188808 A

  In [Patent Document 1], the filter from which dust has been removed by the cleaning means is guided along the movement path and stops at a position close to the upstream side of the front ventilation path of the heat exchanger. In the heat exchanger immediately after the cooling operation is completed, dew condensation is remarkable, and the vicinity of the heat exchanger is in a high humidity atmosphere, and the filter is easily wetted under the influence of high humidity.

  When the filter is U-turned again and returned to its original position, and immediately after the air-conditioning operation is resumed, the surface on the suction side of the filter is moistened, and the dust that has been filtered and adsorbed absorbs moisture and the volume expands. The volume of dust that has been filtered and adhered later expands, and the filter is quickly clogged. When the filter dries, the dust adheres to the filter and cannot be easily removed.

  In [Patent Document 2], the filter from which dust has been removed sequentially protrudes from the insertion / removal opening provided on the front surface of the main body. Users who are indoors can see the filter protruding from the front of the main unit. Since it is a well-known fact that a filter filters dust, there are many users who feel uncomfortable when the filter protrudes to the most visible state.

  The present invention has been made based on the above circumstances, and its purpose is to automatically remove dust adhering to the air filter and to dry the air filter without giving the user a sense of incongruity. It is an object of the present invention to provide an air conditioner indoor unit that can prevent dust from sticking and can achieve complete air filter cleaning.

In order to satisfy the above object, the indoor unit of an air conditioner of the present invention is provided with a heat exchanger and a blower in a ventilation path that communicates a suction port and a blowout port provided in the indoor unit body, and is provided with a suction port. An air filter that filters indoor air sucked from a suction port on the upstream side of the ventilation path of the heat exchanger in the indoor unit body, and an air filter cleaning device that removes and cleans dust adhering to the air filter, The air filter cleaning device is an air that moves and urges the air filter upward by making a U-turn from the lower end on the upstream side of the ventilation path of the heat exchanger in the indoor unit main body provided with an air suction port when cleaning the air filter. A filter feeding means; and a dust removing means for removing dust adhering to the air filter with respect to the air filter moved by the air filter feeding means. Holding a first guide path for holding the position of the air filter in the air filtration, the position of the air filter moving the air filter feeding means of the first guide path and intersecting provided air filter cleaning device The second guide path and an air filter that is provided near the intersection of the first guide path and the second guide path and that is moving along the second guide path enter the first guide path. A movable guide to be prevented and an air filter guide port for guiding a part of the air filter guided by the air filter feeding means of the air filter cleaning device so as to protrude upward from the upper surface of the indoor unit main body are provided.

  According to the present invention, dust attached to the air filter is automatically removed without giving the user a sense of incongruity, and the air filter is dried to prevent dust from sticking, and the air filter is completely cleaned. And the like.

The perspective view which shows the indoor unit external appearance of the air conditioner based on Embodiment in this invention. The top view of the indoor unit upper surface part based on the embodiment. The perspective view of the indoor unit which removed the front panel based on the embodiment. The longitudinal cross-sectional view of the indoor unit which removed the front panel based on the embodiment. The figure which expanded the movable guide and its peripheral part based on the embodiment, and the figure which shows the installation state with respect to the wall surface of an indoor unit main body. The longitudinal cross-sectional view of a part of air filter cleaning apparatus of a normal (filtration) state based on the embodiment. The partial longitudinal cross-sectional view at the time of the air filter cleaning in the air filter cleaning apparatus based on the embodiment. The partial longitudinal cross-sectional view of the air filter cleaning apparatus in the state which the air filter moved further from the position of FIG. 7 based on the embodiment. The partial longitudinal cross-sectional view of an air filter cleaning apparatus in the state which the air filter moved further from the position of FIG. 8 based on the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing the appearance of an indoor unit of an air conditioner. (Note that parts that are not labeled in the description are not shown. Some parts are not marked even if they are shown. The same applies hereinafter).
The indoor unit main body 1 includes a front panel 2 constituting a front surface, an upper surface, and left and right side housings, and a rear main body 3 (not shown). The front view of the indoor unit main body 1 has a very large width dimension in the horizontal direction with respect to the vertical dimension, and is formed in a horizontally long shape as a whole.

  A suction port 5 is provided in the upper surface portion of the front panel 2, and the upper surface portion provided with the suction port 5 and the front surface portion made of a plate body are integrated and opened and closed with the rear end of the upper surface portion as a pivot portion. It becomes panel 2A. The interior of the indoor unit body 1 can be exposed by opening the open / close panel 2A as necessary during maintenance or the like.

  Blowout louvers 11a and 11b, which will be described later, are provided side by side on the lower surface of the front panel 2. Further, the side portions of these blowout louvers 11a and 11b receive and display signals transmitted from a remote control (remote control). Part H is provided.

FIG. 2 is a plan view of the upper surface portion of the indoor unit body 1.
A suction port 5 and an air filter guide port 6 are opened side by side on the upper surface of the front panel 2 which is the indoor unit body 1. The suction port 5 is on the back side, and the air filter guide port 6 is on the near side, and occupies most of the upper surface portion of the front panel 2.

  The size of the air filter guide port 6 in the left-right width direction is substantially the same as the size of the suction port 5 in the left-right width direction, but the front-rear direction dimension is very small. Largely formed. A frame-like beam that divides into a plurality of spaces is fitted into the suction port 5, and the air filter guide port 6 has no beam and is always in an open state.

  When the air filter cleaning operation is selected after the air conditioning operation is finished, dust attached to the air filter F is removed as will be described later, and the air filter guide port 6 is inserted in the cleaned state as shown in FIG. As shown by a two-dot chain line, approximately half of the air filter F protrudes upward from the upper surface of the indoor unit body 1 to dry the air filter F.

3 is a perspective view of the indoor unit with the front panel 2 removed, and FIG. 4 is a longitudinal sectional view of the indoor unit with the front panel 2 similarly removed.
A part of the rear main body 3 can be seen by removing the front panel 2 indicated by a two-dot chain line in FIG. Thereafter, the main body 3 is provided with an air filter support frame W that supports the air filter F, a heat exchanger 7, an indoor blower 8, and an outlet 9.

  By operating the indoor blower 8, a ventilation path 10 is formed in the indoor unit main body 1 to communicate the suction port 5 of the front panel 2 and the blowout port 9 of the rear main body 3. And in this ventilation path 10, the said air filter support frame W, the heat exchanger 7, and the indoor air blower 8 will be arrange | positioned one by one.

  The outlet 9 is formed along the lower end of the front panel 2 and is provided with the two outlet louvers 11a and 11b. These blow-out louvers 11a and 11b are upper and lower louvers that open and close the blow-out opening 9 according to a rotating posture and set the blow-out direction of heat exchange air according to operating conditions.

  The heat exchanger 7 is formed in a substantially inverted V shape by a front heat exchanger portion 7A and a rear heat exchanger portion 7B. The front heat exchanger portion 7A is formed in a curved shape so as to face the front surface portion of the front panel 2 and the upper surface portion including the suction port 5 through an air filter F described later. The rear heat exchanger section 7B is straight and inclined obliquely, and faces a part of the suction port 5 through the air filter F.

  The heat exchanger 7 communicates with a compressor, an outdoor heat exchanger, and the like housed in an outdoor unit (not shown) through a refrigerant pipe, and these constitute a refrigeration cycle. The indoor blower 8 is disposed between the front and rear heat exchanger portions 7A and 7B of the heat exchanger 7.

  The indoor blower 8 includes a fan motor disposed in a space on one side end of the indoor unit body 1 and a cross-flow fan connected to the rotation shaft of the fan motor. The length of the cross flow fan in the axial direction is set to be substantially the same as the length of the heat exchanger 7 in the width direction, and is arranged so as to face each other correctly.

  The lower end portion of the front heat exchanger portion 7A is placed on the front drain pan 12a, and the lower end portion of the rear heat exchanger portion 7B is placed on the rear drain pan 12b. The front and rear drain pans 12a and 12b are formed integrally with the rear main body 3 constituting the indoor unit main body 1, respectively, receive drain water dripped from the heat exchanger portions 7A and 7B, and are outdoors via a drain hose (not shown). It can be drained into the water.

  The outer surfaces of the side walls of the front and rear drain pans 12a and 12b are provided close to the indoor blower 8, and these constitute a nose for the crossflow fan of the indoor blower 8. A partition wall member 13 connects the side wall portions of the front and rear drain pans 12 a and 12 b that are noses and the side portions of the outlet 9.

  By driving the indoor blower 8, the space surrounded by the partition wall member 13 becomes the blowout side in the ventilation path 10 that communicates the nose and the blowout opening 9. On the other hand, the space from the suction port 5 to the heat exchanger 7 is the suction side in the ventilation path 10.

  The air filter support frame 6A is attached between the front panel 2 and the heat exchanger 7, and along the lower end portion of the air filter support frame 6A, a cleaning device support frame 6B including an air filter cleaning device S is provided. Provided integrally.

  The air filter support frame 6A is opposed to the front surface portion of the front panel 2 and is bent with a clearance from the upstream side of the front heat exchanger portion 7A. Furthermore, it opposes the suction inlet 5 provided in the upper surface part of the front panel 2, and it bends in the back side heat exchanger part 7B upper surface, and a clearance gap exists. The air filter F supported by the air filter support frame 6A also has the same posture shape.

  The air filter cleaning device S provided in the cleaning device support frame 6B is interposed between the air filter support frame 6A and the upper side blowing louver 11a provided in the blowing port 9. In a state where the front panel 2 is attached, both the cleaning device support frame 6B and the air filter cleaning device S are shielded by the front panel 2 and cannot be seen from the outside.

  The air filter support frame 6A includes a front frame body 14a and a rear frame body 14b in which a plurality of vertical bars and horizontal bars are assembled in parallel at a predetermined interval, and the front frame body 14a and the rear frame body 14b are combined. A partition guide bar 14c is provided between the vertical bars. Two air filters F are supported on both the left and right sides of the vertical beam at the center of the air filter support frame 6A.

  The air filter support frame 6 </ b> A is gently curved upward with its lower end portion being placed on the upper front end and the rear upper end of the air filter cleaning device S. And it is extended along the space between the upper surface inlet 5 and the heat exchanger 7 upper end, and the front-end | tip part contacts the back side board part of the rear main body 3. FIG.

  As described above, the front frame body 14a and the rear frame body 14b have the widest space at the lower end portions of each other, and gradually narrow as they extend upward. From the position closest to the upper surface portion of the front panel 2 to the position contacting the rear side plate portion of the rear body 3, the narrowest uniform space is formed.

  Only the front frame 14 a is provided with an opening a at a position facing the air filter guide port 6 provided on the upper surface of the indoor unit body 1, and the opening a has substantially the same shape as the air filter guide port 6. Opened to dimensions.

  Only the rear frame 14b lacks a portion facing the opening a of the front frame 14a, and the movable guide K is provided here. The movable guide K is rotatably supported by a support shaft P provided across a vertical beam on both left and right sides of the air filter support frame 6A and a vertical beam at the center.

  As described above, from the point where the two air filters F are supported by the air filter support frame 6A, one support shaft P is provided for one air filter F, and a plurality of support shafts P are provided on the support shaft P. (Two or more) movable guides K are provided.

  As will be described later, as the air filter F moves, the movable guide K rotates with the support shaft P as a rotation fulcrum when the air filter F comes into contact with the air filter F, thereby guiding the air filter F. Therefore, the support shaft is referred to as a rotation support point P in the movable guide K. By providing a plurality of movable guides K for one air filter F, the air filter F can be reliably guided.

  The partition guide bar 14c is formed in a substantially triangular shape whose lower end portion is placed on the air filter cleaning device S and curved upward. The distance between the partition guide bar 14c and the front frame 14a and the distance between the partition guide bar 14c and the rear frame 14b are formed substantially the same from the lower end to the upper side.

  The upper end of the partition guide bar 14c extends to the vicinity of the movable guide K, and the partition guide bar 14c does not intervene from here to the front ends of the front and rear frame bodies 14a, 14b. A space is secured only by the rear frame 14b.

  In the air filter support frame 6A, the space between the front frame body 14a and the partition guide bar 14c from the connecting portion with the air filter cleaning device S to the opening a, and the rear side plate portion of the rear body 3 from the opening a. The first guide path R1 is formed by the space between the front frame 14a and the rear frame 14b up to the leading end.

  The air filter F is accommodated in the first guide path R1 at the time of air conditioning operation and operation stop, which are normal states. However, the air filter cleaning device S acts to cause the air filter F to be in the first guide path. The movement is biased in the direction of exiting R1.

  The space between the rear frame 14b and the partition guide bar 14c from the connecting portion to the air filter cleaning device S to the movable guide K, the first guide path R1 intersecting the movable guide K, and the opening a and A second guide path R <b> 2 is formed as a path reaching the upper part of the upper surface portion of the indoor unit main body 1 through the air filter guide port 6 provided in the indoor unit main body 1.

  When the air filter cleaning device S acts, the air filter F accommodated in the first guide path R1 passes through the air filter cleaning device S and is further urged to move along the second guide path R2. It is like that.

  In the air filter F, a plurality of vertical beam portions and horizontal beam portions are spanned across a rectangular peripheral frame at a predetermined interval, and between these peripheral frames, the vertical beam portion, and the horizontal beam portion, An extremely thin sheet portion is provided integrally. The sheet portion is allowed to flow air, and filter holes having a diameter for capturing dust contained in the air are arranged in a vertical and horizontal order to form a substantial filter portion.

  On the back side of the vertical beam portion constituting the air filter F, tooth portions are continuously provided over the entire length, forming a timing belt shape. Since the vertical beam portion is provided from the lower end portion to the upper end portion of the air filter F, the air filter F is supported so as to be movable in the vertical direction.

  The air filter cleaning device S includes a plurality of feed gears (air filter feed means) 15 provided on the first rotating shaft 16a at predetermined intervals, and a dust lifting brush 16 provided between the feed gears 15. And. The feed gear 15 meshes with a tooth portion provided on a vertical rail portion of the air filter F, and can move and urge the air filter F along this rotational direction.

  The dust lifting brush 16 has brush hairs planted on the peripheral surface of the cylindrical body, and each brush hair is substantially upright with respect to the first rotating shaft 16a, and the diameter thereof is larger than the filter hole diameter of the air filter F. A thin one is selected.

A second rotary shaft 18 a having a dust removing blade (dust removing means) 18 is provided in parallel with the feed gear 15 and the first rotary shaft 16 a of the dust lifting brush 16. The dust removing blade 18 has a plurality of thin elastic members (for example, rubber materials) which are spaced apart in the circumferential direction of the second rotating shaft 18a and spirally bent along the axial direction. Become.
The tip of the dust removing blade 18 is configured to come into sliding contact with the tip of the dust lifting brush 16 in accordance with the rotation of the second rotating shaft 18a.

As shown only in FIG. 3, four drive motors M and two drive motors Ma are attached to one side surface of the cleaning device support frame 6B.
The upper two drive motors M are connected to the feed gear 15 and the first rotating shaft 16a of the dust lifting brush 16 via a gear assembly (not shown), and the two middle drive motors M are connected to the gear assembly (not shown). Is detachably connected to the second rotating shaft 18a of the dust removing blade 18.

That is, since the refrigerant pipe connected to the heat exchanger 7 protrudes on the right side of the cleaning device support frame 6B, there is no room for attaching a large drive motor in space on the side. Only a small drive motor can be mounted, and sufficient torque cannot be obtained with one small drive motor. Accordingly, the torque is secured by using two drive motors M each.
The two lower drive motors Ma are for driving the blowout louvers 11a and 11b provided at the blowout port 9, respectively.

The air filter cleaning device S includes a dust box 20 that houses a dust removing blade 18. The dust box 20 can be detached and attached from the cleaning device support frame 6B. Even if the dust box 20 is removed, the feed gear 15 , the first rotary shaft 16a of the dust lifting brush 16 and the dust removing blade 18 remain in the same positions.

  The dust box 20 has a relatively large space immediately below the dust removing blade 18, and can store the dust removed by the dust removing blade 18 therein. A part of the dust box 20 is configured to be openable and closable so that the stored dust can be discharged.

Next, the movable guide K will be described in detail.
FIG. 5A is an enlarged view of the movable guide K and its peripheral portion, and shows a normal state in which the air filter F is accommodated in the first guide path R1.
The movable guide K has a rear end portion (left side portion in the figure) from the pivot point P, which is a support shaft, formed between the rear frame 14b and the upper end portion of the partition guide bar 14c. Projects to block R2. From the rotation fulcrum P to the front end (right side in the figure), it protrudes from a notch b provided in the rear frame 14b and rides on the rear frame 14b.

  Accordingly, the position of the center of gravity G of the movable guide K is deviated from the rotation fulcrum P, and is actually set obliquely above the rotation fulcrum P (right side). If the air filter F moves upward along the second guide path R2 and collides with the rear end portion of the movable guide K blocking the second guide path R2, the movable guide K is structurally counterclockwise. It is rotationally displaced in the turning direction.

  That is, the upper end portion of the movable guide K rises as shown by a two-dot chain line in the drawing, and the rear end portion of the movable guide K is fitted into the stopper portion c which is a hole provided in the rear frame 14b instead. The movable guide K blocks the first guide path R1, while opening the second guide path R2, and guides the air filter F along the guide path R2.

  Here, an angle formed by a line segment La connecting the rotation fulcrum P and the center of gravity G of the movable guide K and the vertical line Lb is “θ1”, and the movable guide K opens the first guide path R1 and changes the first guide path R1. The movable angle from the position shown in the figure where the second guide path R2 is blocked to the position indicated by the two-dot chain line in the figure where the first guide path R1 is blocked and the second guide path R2 is opened is defined as “θ2”.

FIG. 5 (B) shows the indoor unit A that is attached to the indoor wall surface H height. Actually, an attached installation plate is attached to the wall surface H, and the indoor unit A is attached to the installation plate. Although the wall H and the back of the indoor unit A are constructed so as to be parallel to each other, the indoor unit A still tends to be inclined to some extent. The inclination angle of the indoor unit A with respect to the actual wall surface H is “θ3”.
Therefore, the following equation (1) is established.
θ1> θ2 + θ3 (1)
Next, the operation of the indoor unit of the air conditioner configured as described above will be described.
When a signal for starting an air conditioning operation such as a cooling operation or a heating operation enters the control unit, a driving signal is sent to a compressor disposed in the outdoor unit to start a refrigeration cycle operation. Sent.

  The room air is sucked into the indoor unit body 1 from the suction port 5 and guided along the suction passage 10. First, the air filter F is circulated, and dust contained in the room air is captured. The filtered and cleaned room air is guided to the front heat exchanger section 7A and the rear heat exchanger section 7B that constitute the heat exchanger 7.

  The heat exchanger 7 and the room air exchange heat, and if the cooling operation mode is selected, the room air becomes cool air, and if the heating operation mode is selected, the room air changes to warm air. The heat exchange air is guided along the ventilation passage 10 on the blowout side, guided from the blowout port 9 to the blowout louvers 11a and 11b, and blown into the room.

  When the cool air is blown out into the room, the room temperature is lowered and the air is cooled. When the warm air is blown into the room, the room temperature rises and performs a heating action. In any case, when the indoor air sucked into the indoor unit main body 1 circulates through the air filter F, dust contained in the indoor air is captured, and always cleaned heat exchange air is blown into the room. Clean the room.

Over a long period of use, dust trapped in the air filter F accumulates and clogging occurs. If left as it is, the heat exchange efficiency is lowered, and the cooling capacity and heating capacity are affected. Therefore, the user presses an “air filter cleaning button” provided on the remote control (remote control panel) before or after the air conditioning operation.
When this signal enters the control unit, a drive signal is sent to the drive motor M of the air filter cleaning device S, and the feed gear 15 and the dust lifting brush 16 are rotationally driven together, and the dust removing blade 18 is also driven. Driven by rotation.

  The feed gear 15 shown in FIG. 4 is rotationally driven in the counterclockwise direction, and the air filter F having a tooth portion meshing with the feed gear 15 is moved and urged in the same direction. The air filter F comes into contact with the dust lifting brush 16 from the lower end, and the brush hair is inserted into the filter hole of the air filter F.

  The dust clogged in the filter hole of the air filter F is pushed up from the filter hole by the brush bristles of the dust lifting brush 16. That is, the dust lifting brush 16 is disposed on the secondary side of the air filter F on the heat exchange air outlet side, and the dust is pushed out to the primary side of the heat exchange air introduction side by the brush bristles.

  As the feed gear 15 further rotates, the air filter F is guided to the sliding contact portion between the dust lifting brush 16 and the dust removing blade 18 and passes therethrough. At this time, the dust adhering to the air filter F and pushed up to the primary side by the dust lifting brush 16 is efficiently scraped off by the dust removing blade 18 arranged on the primary side and driven to rotate in the clockwise direction. The

  The dust push-up brush 16 is a cylindrical brush, and the brush bristles are substantially upright with respect to the first rotating shaft 16a, so that the dust is surely lifted on the primary side surface of the air filter F. The dust removing blade 18 is a rotating body and rotates in a counterclockwise direction with a relatively simple structure, so that dust floating on the primary side is reliably and continuously removed from the air filter F.

  The dust scraped off by the dust removing blade 18 is accumulated in the dust box 20. If the cleaning operation for the air filter F is performed a plurality of times, the dust box 20 becomes full of dust. At this time, the sensor detects and sends a signal to the control unit. The control unit makes a necessary notification to prompt the user to discharge the dust in the dust box 20.

  During the air conditioning operation and when the operation is stopped, the air filter F is accommodated in the first guide path R1 as shown in FIG. At this time, the center of gravity G is set so that the rear end of the movable guide K blocks the second guide path R2 and the front end is inserted into the notch b provided in the rear frame 14b.

  When the air filter cleaning operation is selected, the air filter F makes a U-turn from the lower end, and dust is scraped off from the air filter F as described above. As shown in FIG. 7, the air filter F moves upward in the second guide path R2 with the lower end portion thus far as the tip. One end of the movable guide K is inserted into the notch b, and the other end blocks the second guide path R2.

  As shown in FIG. 8, the air filter F that has moved along the second guide path R <b> 2 contacts the movable guide K, and the movable guide K rotates counterclockwise about the rotation fulcrum P. As a result, the first guide path R1 is blocked while the second guide path R2 is opened, and the air filter F is guided in the direction of the opening a through the intersection intersecting the first guide path R1. .

  Since the movable guide K is provided in the vicinity of the intersection of the first guide path R1 and the second guide path R2, the air filter F that is moving along the second guide path R2 becomes the first guide path R1. It is possible to prevent intrusion or the air filter F from being caught on the first guide path R1.

  The movable guide K has a single pivot fulcrum P, and moves along the second guide path R2 so as to pivot and displace around the pivot fulcrum P. Therefore, the movable guide K has a simple structure. The guide function can be realized at low cost.

  As described above, the movable guide K has a position of the center of gravity G in the air filtration above the rotation fulcrum P, and a line segment La and a vertical line Lb connecting the rotation fulcrum P and the center of gravity G. Is configured so that the relationship of θ1> θ2 + θ3, which is the equation (1), is obtained when the movable angle of the movable guide K is θ2 and the inclination angle of the front and rear of the indoor unit body 1 with respect to the installation wall H is θ3. did.

  Therefore, when the air filter F comes into contact with the movable guide K, the movable guide K can be easily and reliably rotated and guided as it is along the second guide path R2. In particular, a driving source for rotationally driving the movable guide K is not required, and operation reliability can be obtained at a low cost with a simple configuration.

  At this time, the rear end portion (upper end portion in the air filtration state) of the air filter F passes through the intersection of the first guide path R1 and the second guide path R2, and the air filter cleaning device S or a position in the vicinity thereof. Therefore, there is no problem with the movement of the air filter F.

  As shown in FIG. 9, the air filter F is guided by the movable guide K and passes through the opening a provided in the front frame body 14a, and is passed through the air filter guide port 6 of the indoor unit body 1 (not shown) to the upper surface. Protruding. This state continues until the rear end portion of the air filter F so far passes completely through the sliding contact portion between the dust lifting brush 16 and the dust removing blade 18.

  The cleaning operation for the air filter F of the air filter cleaning device S is completed when the rear end portion of the air filter F passes through the portion. The sensor detects this and sends a signal to the control unit to stop the rotation of the feed gear 15 and the dust push-up brush 16 and stop the rotation of the dust removing blade 18.

  As previously indicated by the two-dot chain line in FIG. 1 and as indicated by the two-dot chain line in FIG. 4, a part of the air filter F stops in a state of protruding from the upper surface portion of the indoor unit body 1. A user who has selected cleaning of the air filter F can visually check that a part of the air filter F protrudes from the upper surface of the indoor unit body 1 and can confirm that the air filter F is being cleaned.

  For other users, even if the air filter F protrudes from the upper surface portion of the indoor unit main body 1, it cannot be seen unless it is conscious. Therefore, it is possible to avoid discomfort or discomfort to other users.

  Immediately after the cooling operation is completed, the heat exchanger 7 is condensable, and this vicinity has a high humidity atmosphere. However, since approximately half of the air filter F protrudes from the upper surface of the indoor unit body 1, it is not affected by the high humidity of the heat exchanger 7 and drying is promoted.

The part inserted into the opening a, the part on the movable guide K, and the vicinity thereof are also in communication with the outside, and are not affected by the high humidity of the heat exchanger 7. Since the portion of the air filter F facing the heat exchanger 7 is almost upright, it is easy to flow down even if water droplets adhere to it, or even if moisture adheres thereto, the opening a and the air filter guide port 6. It is easy to evaporate through.
After all, if the configuration of the present embodiment is adopted, drying of the area of most of the air filter F is promoted.

  The air filter F is kept in this state for a certain period of time. After a certain period of time has passed, the air filter F is moved and energized again to return from the second guide path R2 to the position accommodated in the original first guide path R1.

  Even when the next air-conditioning operation is started, the air filter F is completely dried, so that dust does not stick to it and a filtering effect can be ensured over a long period of time. And, when cleaning the air filter F again, the adhering dust can be easily removed.

  In addition, although the said movable guide K was operated from the position setting of the rotation fulcrum P and the gravity center G, it is not limited to this, It connects with one rotation fulcrum P and this rotation fulcrum P. The movable guide K can be reliably operated by the combination with the power source.

  Furthermore, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

  DESCRIPTION OF SYMBOLS 1 ... Indoor unit main body, 5 ... Suction port, 9 ... Outlet, 10 ... Ventilation path, 7 ... Heat exchanger, 8 ... Indoor fan, F ... Air filter, S ... Air filter cleaning device, 15 ... Feed gear (air Filter feed means), 18 ... Dust removal blade (dust removal means), 6 ... Air filter guide port, R1 ... First guide path, R2 ... Second guide path, K ... Movable guide, P ... Rotating fulcrum , G ... Center of gravity.

Claims (4)

A heat exchanger and a blower are disposed in a ventilation path that communicates the suction port and the blowout port provided in the indoor unit body, and the ventilation path upstream of the heat exchanger in the indoor unit body in which the suction port is provided. In the indoor unit of an air conditioner, comprising an air filter that filters indoor air sucked from the suction port and an air filter cleaning device that removes and cleans dust adhering to the air filter.
The air filter cleaning device is
An air filter feeding means for U-turning the air filter from the lower end portion and moving upward at the upstream side of the ventilation path of the heat exchanger in the indoor unit main body provided with the suction port when cleaning the air filter; ,
Dust removing means for removing dust adhering to the air filter with respect to the air filter moved by the air filter feeding means,
The indoor unit body is
A first guide path that holds the position of the air filter during air filtration;
A second guide path which is provided to intersect with the first guide path and holds the position of the air filter being moved by the air filter feeding means of the air filter cleaning device;
A movable guide that is provided in the vicinity of the intersection of the first guide path and the second guide path, and that prevents the air filter moving along the second guide path from entering the first guide path;
An air conditioner comprising an air filter guide port for guiding a part of an air filter guided by an air filter feeding means of the air filter cleaning device so as to protrude upward from an upper surface portion of an indoor unit body. Indoor unit. The movable guide is
2. The air according to claim 1 , wherein the air is provided with a single pivot fulcrum, and is pivotally displaced about the pivot fulcrum by contact with a tip of an air filter that moves along the second guide path. The indoor unit of the harmony machine. The movable guide is
The position of the center of gravity during air filtration is above the rotation fulcrum, and the angle θ1 formed by the line connecting the rotation fulcrum and the center of gravity and the vertical line has a relationship that satisfies the following expression (1). The indoor unit of the air conditioner according to claim 2 .
θ1> θ2 + θ3 (1)
θ1: Angle formed by a vertical line and a line passing through the pivot point and the center of gravity θ2: Movable angle of the movable guide θ3: Tilt angle of the air conditioner main body before and after the installation wall The indoor unit of an air conditioner according to any one of claims 1 to 3 , wherein the movable guide has a flat plate shape, and two or more air guides are arranged per one air filter.

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