JP2010249358A - Indoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner omitting removal labor of automatically removing dust adhered to an air filter and detachment and attachment labor of the air filter, and completely cleaning the air filter. <P>SOLUTION: An air filter cleaning device removing and cleaning dust adhered to the air filter includes an air filter sending gear 15 displacing the air filter F from a predetermined air filtration position, a dust removal blade 18 disposed in a primary side being an air introduction side of the air filter and slidably contacting the air filter to remove the adhered dust, and an air filter push up brush 16 disposed in a secondary side via the dust removal blade and the air filter, rotating such that a relative speed with the air filter is substantially zero during moving of the air filter, and pushing up the dust adhered to the air filter to the primary side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

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

  In general, an indoor unit of an air conditioner includes an air filter on the front side of a heat exchanger accommodated in an indoor unit body. The air filter filters indoor air sucked into the main body and guides only clean air to the heat exchanger. Dust remains in the air filter, and dust attached to the air filter accumulates over a long period of use.

  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. In any case, since it is troublesome and troublesome, the air filter is easily left unattended.

  For example, [Patent Document 1] discloses an air conditioner cleaning device that automatically removes dust adhering to an air filter while being disposed in the indoor unit body without removing the air filter from the indoor unit body. Is done. A user equipped with this air conditioner can simply remove the dust collection box when the dust collection box is full, and can greatly reduce labor.

JP 2008-111590 A

  In the above-mentioned [Patent Document 1], the air filter is formed in a belt shape that is stretched between a drive shaft and a driven shaft, and backup shaft is provided on one of the shafts and arranged on the back side of the air filter. A cleaning body is provided on the surface side. The dust attached to the air filter surface is not pushed back by the cleaning body, and the dust can be reliably removed.

  However, with the configuration of [Patent Document 1], it seems that the effect of removing dust adhering to the air filter is not sufficient. That is, when the cleaning body rotates and the brush portion rubs the surface of the air filter, the driven pulley, which is backup means arranged on the back side of the air filter, becomes a receiving portion for receiving dust.

  By providing this driven pulley, dust is not pushed to the back side of the air filter, but the driven pulley does not have a function of pushing back the dust pressed by the cleaning body to the surface side. Therefore, in reality, dust may be pressed between the cleaning body and the driven pulley, and may remain attached without being removed from the air filter.

  The present invention has been made based on the above circumstances, and the object of the present invention is to automatically remove dust adhering to the air filter and reduce the time and effort of removing and attaching the air filter. An air conditioner indoor unit that can completely execute air filter cleaning is provided.

In order to satisfy the above object, the present invention provides an air filter, a heat exchanger, and a blower arranged in this order in an air passage that communicates an air suction port and an air outlet provided in the indoor unit body. In an indoor unit of an air conditioner equipped with an air filter cleaning device that removes attached dust and cleans it,
The air filter cleaning device is arranged on an air filter moving means for moving the air filter from a predetermined air filtration position and a primary side that is an introduction side of air guided to the air filter. A dust removing means for removing dust adhering to the air filter by sliding contact with the filter, and an air filter moving disposed on the secondary side which is an outlet side of the air guided to the air filter via the dust removing means and the air filter And a dust lifting means that rotates at a relative speed of approximately 0 with respect to the air filter and pushes dust adhering to the air filter to the primary side.

  According to the present invention, it is possible to automatically remove dust adhering to the air filter and to eliminate the labor and time required for removing the air filter and to attach and remove the air filter.

The perspective view which shows the indoor unit external appearance of the air conditioner based on Embodiment in this invention. The perspective view of the air conditioner indoor unit which removed the front panel based on the embodiment. The longitudinal cross-sectional view of the air conditioner indoor unit which removed the front panel based on the embodiment. The perspective view of the support frame structure based on the embodiment. The perspective view of the air filter cleaning apparatus principal part based on the embodiment. The longitudinal cross-sectional view of the air filter cleaning apparatus principal part based on the embodiment. The longitudinal cross-sectional view of the air filter cleaning apparatus based on the embodiment. The figure explaining the arrangement structure of the air filter pushing-up brush with respect to the air filter and the blade for dust removal based on the embodiment. The perspective view of the dust box based on the embodiment. The figure explaining the attachment / detachment operation of the dust box based on the embodiment. The figure explaining the attachment / detachment operation of the dust box based on the embodiment further. The figure explaining the attachment / detachment operation of the dust box based on the embodiment further. The figure explaining the hinge structure of the dust box 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 constituting a lower surface and a rear housing not shown here. The indoor unit body 1 has a large width dimension with respect to the vertical dimension, and is formed in a horizontally long shape as a whole.

  A front suction port 4 is provided in the front portion of the front panel 2, and an upper suction port 5 is opened in the upper surface portion. An opening / closing panel 2A supported by an opening / closing drive mechanism is fitted into the front suction port 4 so as to be freely opened and closed. FIG. 1 shows a stopped state of the air conditioning operation, and the open / close panel 2A is flush with the front panel 2 and closes the front inlet 4.

When the air-conditioning operation is selected, the open / close panel 2A protrudes and displaces toward the front side to create a gap communicating with the room around it, and opens the front suction port 4 into the room. A frame-like crosspiece partitioning into a plurality of spaces is fitted into the upper surface suction port 5, and the upper surface suction port 5 is always open.
The front panel 2 provided in the front suction port 4 is configured as the open / close panel 2A connected to the open / close drive mechanism, but may be configured as a fixed panel having no open / close drive mechanism.

FIG. 2 is a perspective view of the indoor unit with the front panel 2 removed, and FIG. 3 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. Thereafter, the main body 3 is provided with an air filter support frame 6 </ b> A that supports the air filter F, a heat exchanger 7, an indoor blower 8, and an outlet 9.

  That is, in a state in which the front panel 2 and the rear main body 3 are combined to form the indoor unit main body 1, the front air inlet 4 and the upper surface inlet 5 of the front panel 2 and the rear main body 3 are provided in the indoor unit main body 1. An air passage 10 that communicates with the outlet 9 is formed. The air filter support frame 6 </ b> A, the heat exchanger 7, and the indoor blower 8 are sequentially arranged in the air passage 10.

  The outlet 9 is formed along the lower end of the front suction port 4 and is provided with 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 entire front suction port 4 and a part of the upper suction port 5. The rear heat exchanger portion 7B is straight and obliquely inclined and faces a part of the upper surface suction port 5.
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 axial length of the cross-flow fan is set to be 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 8B 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 go to the outside through a drain hose (not shown). It can be drained.

  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 blower passage 10 that communicates the nose and the blowout opening 9. On the other hand, the space between the front suction port 4 and the upper suction port 5 and the heat exchanger 7 is the suction side in the air passage 10.

  On the other hand, the air filter support frame 6A is attached between the front panel 2 and the heat exchanger 7, and a cleaning device support frame for supporting the air filter cleaning device S along the lower end portion of the air filter support frame 6A. 6B is provided integrally. The integrated structure of the air filter support frame 6A and the cleaning device support frame 6B is referred to as a support frame structure K.

  The air filter support frame 6A is opposed to the front suction port 4 and is bent with a gap from the front surface of the front heat exchanger portion 7A. Further, the air filter support frame 6A is opposed to the upper surface suction port 5 so as to face the rear heat exchanger portion. 7B is bent to face the upper surface with a gap. The air filter F supported by the air filter support frame 6A also has the same posture shape.

The air filter cleaning device S supported by the cleaning device support frame 6B is interposed between the air filter support frame 6A and the upper side blowing louver 11a provided at the blowing port 9. With the front panel 2 attached, the cleaning device support frame 6B and the air filter cleaning device S are both shielded by the front panel 2 and are not visible from the outside.
In a state where the air filter cleaning device S is supported by the cleaning device support frame 6B, the front surface of the air filter cleaning device S is positioned on the front surface extension of the air filter support frame 6A. Therefore, even if the front panel 2 is removed, there is no discomfort in appearance.

FIG. 4 is a perspective view of the support frame structure K. FIG. However, a part of the air filter cleaning device S is omitted.
As shown in FIGS. 3 and 4, the air filter support frame 6 </ b> A is configured by overlapping a front frame body 14 a and a rear frame body 14 b. Each of the front frame body 14a and the rear frame body 14b includes a vertical beam at the left and right sides and a central portion, a horizontal beam connecting the rear and front ends of the vertical beam, and a space between the vertical beam and the horizontal beam. And a partition bar incorporated in a rectangular shape.

A partition guide bar 14c is provided between the vertical beam of the front frame 14a and the vertical beam of the rear frame 14b. By this partition guide bar 14c, a space space is secured between the front frame body 14a and the partition guide bar 14c and between the partition guide bar 14c and the rear frame body 14b.
The lower end of the front frame 14a is connected to the front end of the cleaning device support frame 6B, and the lower end of the rear frame 14b is connected to the rear end of the cleaning device support frame 6B. The lower end portions of the front frame body 14a and the rear frame body 14b are formed with a wider interval than the upper end portions.

  The partition guide bar 14c has a plate thickness itself at the upper end and a triangular bag shape at the lower end. Thus, the distance between the front frame body 14a and the rear frame body 14b with respect to the partition guide bar 14c is set to be the same from the upper end to the lower end of the partition guide bar 14c.

  The two air filters F are supported on both the left and right sides of the vertical beam a at the center of the air filter support frame 6A. More specifically, each air filter F is placed in a space between the front frame 14a and the partition guide bar 14c in a normal state other than during cleaning of the air filter F, which will be described later, that is, during air conditioning operation and when the operation is stopped. Contained and supported.

  The left and right width dimensions of the air filter F coincide with the dimensions between the left and right vertical bars constituting the air filter support frame 6A and the central vertical beam a, and the dimension between the upper and lower ends of the air filter F Is formed so as to coincide with the dimension between the front end side crosspiece and the rear end side crosspiece constituting the air filter support frame 6A.

  FIG. 5 is a perspective view showing one of the left and right air filters F, a part of an air filter feed gear (air filter moving means) 15 that sends the air filter F, and a part of the air filter cleaning device S. 6 is a side view of FIG.

  The air filter F is formed in a rectangular shape by a plurality of vertical beam portions fa and horizontal beam portions fb, and an extremely thin sheet portion fc is integrally formed between the vertical beam portions fa and the horizontal beam portions fb. Is provided. The sheet portion fc is allowed to flow air, and filter holes d having a diameter for capturing dust contained in the air are opened at regular intervals in the vertical and horizontal directions to form a substantial filter portion.

  On the back surface side of the vertical crosspiece fa constituting the air filter F, a tooth portion fe is continuously provided over the entire length to form a timing belt. The lower end portion of each vertical crosspiece fa is a protruding portion faa protruding downward from the lowest horizontal crosspiece fb, and the tooth portion fe on the back surface of the protruding portion faa is in the normal state to the air filter feed gear 15. Mesh.

  As shown in FIG. 4 again, the air filter feed gears 15 are provided at predetermined intervals along the axial direction of the dust lifting brush (dust lifting means) 16 constituting the air filter cleaning device S. . That is, the air filter feed gear 15 and the dust push-up brush 16 are integrally configured to reduce the arrangement space.

  The cleaning device support frame 6B includes a side piece portion 17a provided on the left and right side portions of the left and right side portions 17a, and a rear end edge of the left and right side piece portions 17a. A receiving surface part 17b for connecting the two parts to each other and a central piece part 17c provided on the extension of the vertical beam a at the central part in the air filter support frame 6A are provided.

  The left and right side piece portions 17a and the central piece portion 17c are provided with bearing portions that support the rotating shaft 16a of the dust lifting brush 16, and the left and right side piece portions 17a constitute an air filter cleaning device S. A mounting recess 21 is provided for detachably mounting.

  Four drive motors M are attached to the outer surface of one side piece 17a. Two upper drive motors M are connected to the rotating shaft 16a of the dust lifting brush 16 via a gear assembly (not shown), and the two lower drive motors M are connected to the dust removing blade 18 via a gear assembly (not shown). The rotary shaft 18a is detachably connected.

  A refrigerant pipe connected to the heat exchanger 7 protrudes on the right side of the cleaning device support frame 6B (shown in FIG. 2), and there is no room for mounting a large drive motor in space on the outer surface of the side piece 17a. 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 drive motor M connected to the rotating shaft 16 a of the dust lifting brush 16 also serves as a drive source for the air filter feed gear 15. Therefore, the dust push-up brush 16 and each air filter feed gear 15 are driven to rotate at the same time, and the two air filters F meshing with the air filter feed gear 15 are moved simultaneously.

  As shown in FIG. 5 again, in a normal state, the tooth portion fe provided on the protruding portion fee at the lower end of the air filter F meshes with the air filter feed gear 15. For this reason, the lower end crosspiece fb of the air filter F is separated from the dust lifting brush 16. Since no stress is applied to the brush bristles of the dust lifting brush 16, the life of the bristles can be extended.

  In particular, FIG. 6 shows the support structure for the air filter F of the air filter support frame 6A described above and the relationship between the air filter support frame 6A and the air filter feed gear 15. The lower ends of the vertical frames of the front frame body 14a and the rear frame body 14b are integrally connected with a curved surface that is somewhat larger than the radius of curvature of the air filter feed gear 15.

  The lower end portion of the partition guide bar 14 c is bent along the air filter feed gear 15. When the air filter F is rotated in the counterclockwise direction since the air filter F is in a normal state, the air filter F is bent from the lower end portion of the air filter feed gear 15 and the front and rear frame bodies 14a and 14b. Guided between the formed connecting portions.

  Then, the air filter F is guided to the space between the partition guide bar 14c and the rear frame 14b, and the lower end portion up to that time is changed to the upper end portion and moved upward. Finally, the drive motor M is set to stop and control at a position where the upper end of the air filter F is stopped by the upper ends of the partition guide bar 14c and the rear frame 14b.

Next, the air filter cleaning device S will be described.
FIG. 7 is a longitudinal sectional view of the air filter cleaning device S. 2 shows the appearance of the air filter cleaning device S, FIG. 3 shows a reduced version of FIG. 7, FIG. 4 shows the appearance of the air filter cleaning device S omitted, and FIGS. Only a part of the air filter cleaning device S is shown.

  The air filter cleaning device S includes a dust removing blade (dust removing means) 18 in addition to an air filter feed gear (air filter moving means) 13 and a dust lifting brush (dust lifting means) 16. The dust removing blade 18 is accommodated in the dust box 20.

  The dust push-up brush 16 has brush hair b planted on the peripheral surface of the rotating shaft 16a, and is formed in a substantially cylindrical shape as a whole. The dust removing blade 18 is provided with a plurality of blade pieces (rotating bodies) h at predetermined intervals in the circumferential direction of the rotating shaft 18a. The blade piece h is a thin elastic member (for example, a rubber plate), and is spirally bent along the axial direction of the rotating shaft 18a.

  FIG. 8 is a view for explaining the arrangement structure of the dust lifting brush 16 and the dust removing blade 18 with respect to the air filter (shown by a broken line) F. FIG. As previously described with reference to FIG. 6, the air filter feed gear 15 is driven to rotate counterclockwise, and the air filter F is schematically shown in the middle of being moved in the direction indicated by the two-dot chain line arrow in the figure. ing.

  The bristles b of the dust lifting brush 16 are planted substantially upright with respect to the rotating shaft 16a, and the diameter of the bristles b is selected to be smaller than the diameter of the filter hole d of the air filter F described above. ing.

  As described above, since the rotational drive source of the air filter feed gear 15 that moves the air filter F and the rotational drive source of the dust lifting brush 16 use the same drive motor M, the movement of the air filter F The speed and the peripheral speed of the dust lifting brush 16 are the same. In other words, the dust lifting brush 16 rotates with the relative speed with respect to the air filter F being “0” when the air filter F is moved.

  Moreover, the bristles b of the dust lifting brush 16 are planted substantially upright with respect to the rotating shaft 16a, and the diameter of the bristles b is selected to be smaller than the diameter of the filter hole d of the air filter F. Therefore, the bristles b are securely inserted into the filter holes d of the air filter F.

  On the other hand, the rotating shaft 18 a of the dust removing blade 18 is provided in parallel with the rotating shaft 16 a of the dust lifting brush 16. The rotational speed of the rotating shaft 18 a of the dust removing blade 18 is set relatively faster than the moving speed of the air filter F by the air filter feed gear 15.

  The length (radius) from the center of the rotating shaft 16a of the dust lifting brush 16 to the tip of the brush b is R1, and the length (radius) from the center of the rotating shaft 18a of the dust removing blade 18 to the tip of the blade piece h is R1. Let R2 be L, and let L be the distance between the axes of the dust lifting brush 16 and the dust removing blade 18.

Here, the length (radius) R1 from the center of the rotating shaft 16a of the dust lifting brush 16 to the tip of the brush b b and the length (radius) of the dust removing blade 18 from the center of the rotating shaft 18a to the tip of the blade piece h. ) The sum of R2 is set to be larger (R1 + R2> L) than the inter-axis distance L between the dust lifting brush 16 and the dust removing blade 18.
Therefore, the tip of the bristles b of the dust lifting brush 16 and the tip of the blade piece h of the dust removing blade 18 are attached so as to overlap each other.

FIG. 9 is a perspective view of the dust box 20 alone in a state of being removed from the cleaning device support frame 6B, and is seen from the back side in the actual attached state. It is the dust box 20 seen from the right side part of the air filter cleaning apparatus S shown in FIG.
An opening 20a is provided at a substantially central portion in the vertical direction of the dust box 20 across the left-right width direction, and the dust removing blade 18 is exposed therefrom. The upper part is curved from the opening 20a, and is along a part of the peripheral surface of the dust lifting brush 16 in a state of being attached to a predetermined part. A window portion 23 is opened in the bent portion 22 along the width direction.

  In a normal state, the lower end of the air filter F meshes with an air filter feed gear 15 coaxial with the dust lifting brush 16. Since the bent portion 22 of the dust box 20 covers the lower end portion of the air filter F, the flow of air is promoted by providing the window portion 23, and the filtration area of the air filter F is ensured.

  The rotating shaft 18 a of the dust removing blade 18 is pivotally supported on both side portions of the dust box 20, and one end portion of the rotating shaft 18 a protrudes from the side surface portion of the dust box 20. As described above, the protrusion of the rotary shaft 18a is detachably connected to the drive motor M.

  A latching projection 25 is provided at a lower position of the projecting portion of the rotating shaft 18a, which is the lower end portion of the dust box. The latching protrusion 25 is freely detachable from the mounting recess 21 (shown in FIG. 4) provided on the side piece 17a of the cleaning device support frame 6B.

  FIG. 10 shows a state where the dust box 20 is removed from the cleaning device support frame 6B. The mounting recess 21 provided in the side piece 17a is a recess that is cut in the horizontal direction from the side edge of the side piece 17a and bent downward at a predetermined site. It is formed with a width that is slightly wider than the diameter of the hooking protrusion 25 and deeper than the hooking protrusion 25.

  FIG. 11 shows a state where one end of the dust box 20 is hooked on the cleaning device support frame 6B. That is, the latching protrusion 25 of the dust box 20 is latched on the mounting recess 21 of the cleaning device support frame side piece 17a. At this time, since the bent portion 22 of the dust box 20 protrudes from the front surface of the cleaning device support frame 6B, the dust box 20 is urged to rotate toward the dust push-up brush 16 with the hooking protrusion 25 serving as a fulcrum.

  FIG. 12 is a perspective view showing a state in which the bent portion 22 of the dust box 20 is attached and fixed to the cleaning device support frame 6B. In the bent portion 22 of the dust box 20, slide claw portions 26 are provided on the left and right side portions and the center portion on the surface side. On the other hand, a latching hole 27 is provided in each of the left and right side piece portions 17a and the central side piece portion 17c.

  The bent portion 22 of the dust box 20 is rotated to a portion that covers the dust lifting brush 16 and the slide claw portion 26 is slidably biased so that the tip end portion is engaged with the latching hole 27 of the side piece portions 17a and 17c. If inserted, the dust box 20 can be attached to a predetermined portion of the cleaning device support frame 6B. If the reverse operation is performed, the dust box 20 can be removed from the cleaning device support frame 6B.

  FIG. 13 shows a hinge structure provided in the dust box 20. In other words, the lower side of the dust removing blade 18 of the dust box 20 is a dust accommodating portion 28 for accommodating the dust removed from the air filter F by the dust removing blade 18 as will be described later. When the dust container 28 is full of dust, it must be discharged.

  Therefore, an opening / closing lid 30 having a hinge portion e is provided at the lower end portion of the bent portion 22 and constitutes a part of the dust accommodating portion 28. A claw portion 30a is provided at the lower end portion of the opening / closing lid 30 and is detachable from the opening edge. If the claw 30a of the opening / closing lid 30 is removed and the opening / closing lid 30 is rotated with the hinge portion e as a fulcrum, the dust container 28 is opened.

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 drive signal is sent to the compressor disposed in the outdoor unit to start the refrigeration cycle operation.
At the same time, a drive signal is sent to the drive source of the open / close drive mechanism of the open / close panel 2 </ b> A provided in the indoor unit body 1, and a drive signal is sent to the indoor blower 8. The open / close panel 2A is displaced to a position indicated by a two-dot chain line in FIG. 1, and the front suction port 4 provided in the front panel 2 is opened.

  The room air is sucked into the indoor unit body 1 from the front suction port 4 and the upper surface suction port 5 and guided along the air blowing path 10 on the suction side. 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 air blowing path 10 on the blow-out side, guided from the blow-out port 9 to the blow-out 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, the dust trapped in the air filter F accumulates thickly, resulting in clogging. 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 air filter feed gear 15 and the air filter push-up brush 16 are driven to rotate integrally, and also for dust removal. The blade 18 is driven to rotate.

The air filter feed gear 15 and the air filter push-up brush 16 shown in FIGS. 6 to 8 rotate in the counterclockwise direction. Because of the relationship between the air filter feed gear 15 and the tooth portion fe of the air filter F that mesh with each other, the air filter F has a partition guide bar 14c and a rear frame body 14b between the front frame body 14a and the partition guide bar 14c. Move between and.
Since the air filter push-up brush 16 is provided integrally with the air filter feed gear 15 that moves the air filter F, the air filter F rotates at a relative speed of approximately 0 when the air filter F moves. .

  The setting of the arrangement structure (R1 + R2> L) of the air filter push-up brush 16 and the dust removing blade 18 described in FIG. 8, the thickness of the bristles b of the air filter push-up brush 16, and the filter of the air filter F The bristles b of the air filter push-up brush 16 are surely inserted into the filter holes d of the air filter F due to the size relationship of the diameters of the holes d.

  The dust clogged in the filter hole d of the air filter F is pushed up from the filter hole d by the bristles b of the air filter push-up brush 16. In other words, the air filter push-up brush 16 is disposed on the secondary side of the air filter F on the heat exchange air outlet side, and dust is pushed out to the primary side of the heat exchange air introduction side by the bristles b. .

  Specifically, the dust is pushed up by the air filter push-up brush 16 toward the dust removing blade 18 disposed on the primary side. At this time, since the relative speed between the air filter F and the air filter push-up brush 16 is 0, even if the air filter push-up brush 16 is applied deeply to the air filter F, the driving torque of the air filter F is unlikely to increase.

  The air filter push-up brush 16 is a rotating columnar brush, and the bristles b are substantially upright with respect to the rotating shaft 16a, so that dust is surely lifted on the primary side surface of the air filter F. Further, since the air filter push-up brush 16 and the air filter feed gear 15 are integrally connected, the structure can be simplified and the quality can be improved.

  The rotating shaft 18a of the dust removing blade 18 and the rotating shaft 16a of the air filter lifting brush 16 are provided in parallel to each other. The rotating speed of the dust removing blade 18 is the moving speed of the air filter F by the air filter feed gear 15, That is, it is set relatively faster than the rotational speed of the air filter push-up brush 16.

In addition, the dust removing blade 18 is a rotating body and has a relatively simple structure, but by rotating counterclockwise, the dust floating on the primary side is reliably removed from the air filter F. Dust removal from the dust removing blade 18 is continuously performed.
When the air filter F moves and fits in the space between the partition guide bar 14c and the rear frame 14b over the entire length, the control unit sends a stop signal to the drive motor M. Then, the reverse drive signal is sent to the drive motor M again at the timing.

  The air filter feed gear 15 and the air filter push-up brush 16 are rotationally driven in the clockwise direction, and the dust removing blade 18 is rotationally driven in the clockwise direction. The air filter F moves again, passes between the air filter lifting brush 16 and the dust removing blade 18, and returns to the space between the original front frame 14a and the partition guide bar 14c.

Also at this time, the dust remaining in the filter hole d of the air filter F is pushed up to the primary side by the air filter push-up brush 16 arranged on the secondary side, and dust removal arranged on the primary side is performed. The blade 18 is reliably removed from the air filter F.
Eventually, the air filter F is continuously moved during the reciprocating movement, and the dust clogged in the filter hole d by the air filter push-up brush 16 is pushed up from the secondary side to the primary side and arranged on the primary side. It is removed by the dust removing blade 18. The dust adhering to the air filter F is completely removed while the air filter F is returned to the original position.

The dust removed from the air filter F by the dust removing blade 18 is stored in the dust container 28 in the dust box 20. By pressing the “air filter cleaning button” a plurality of times and cleaning the air filter F, the dust in the dust container 28 becomes almost full. Therefore, the dust box 20 is removed from the air filter cleaning device S, and the internal dust is discarded.
Contrary to what was previously described with reference to FIG. 12, the slide claw portion 26 provided in the bending portion 22 constituting the air filter cleaning device S is slid and biased so that the tip end portion of the side piece portions 17a and 17c. Pull out from the retaining hole 27.

  Next, contrary to what was previously described with reference to FIG. 11, the dust box 20 is pivoted about the latching protrusion 25 and the upper end of the bent portion 22 protrudes to the near side of the cleaning device support frame 6B. . As described above with reference to FIG. 10, the dust box 20 can be removed from the cleaning device support frame 6 </ b> B together with the dust removing blade 18 by extracting the latching protrusion 25 from the mounting recess 21.

  From this state, as shown in FIG. 13, the claw portion 30a of the opening / closing lid 30 is removed, and the opening / closing lid 30 is rotated using the hinge portion e as a fulcrum. The dust container 28 is opened, and dust that is full here can be discarded. Thereafter, the dust box 20 may be attached to a predetermined portion of the cleaning device support frame 6B by performing the reverse operation to that described above.

  Note that the present invention is not limited to the above-described embodiment as it is, 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, 4 ... Front suction port, 5 ... Top suction port, 9 ... Outlet port, 10 ventilation path, F ... Air filter, 7 ... Heat exchanger, 8 ... Indoor fan, S ... Air filter cleaning apparatus, 15 ... Air filter feed gear (air filter moving means), 18 ... Dust removing blade (dust removing means), 16 ... Air filter lifting brush (dust lifting means), 16a ... Rotating shaft, b ... Brush hair, d ... filter holes.

Claims (5)

An air filter, in which an air filter, a heat exchanger, and a blower are sequentially arranged in an air passage that communicates an air suction port and an air outlet provided in the indoor unit main body, and removes dust attached to the air filter and cleans it. In an air conditioner indoor unit equipped with a cleaning device,
The air filter cleaning device is
Air filter moving means for moving the air filter from a predetermined air filtration position;
A dust removing means that is detachably disposed on the primary side that is the introduction side of the air guided to the air filter, and that slides on the air filter and removes dust adhering to the air filter when the air filter moving means operates. When,
It is arranged on the secondary side that is the outlet side of the air led to the air filter via the dust removing means and the air filter, and rotates with the relative speed with respect to the air filter when the air filter moves as substantially zero. And dust lifting means for lifting dust adhering to the air filter to the primary side,
An air conditioner indoor unit comprising: The dust lifting means is
It consists of the bristles that are planted along the circumference of the rotating shaft and formed into a cylindrical shape.
The indoor unit of an air conditioner according to claim 1, wherein the bristles are substantially upright with respect to the rotating shaft. The dust lifting means is
The indoor unit for an air conditioner according to any one of claims 1 and 2, wherein the indoor unit is integrally connected to the air filter moving means. The dust removing means is
It consists of a rotating body having a rotating shaft parallel to the rotating shaft constituting the dust lifting means,
The rotational speed of the rotating body is set relatively faster than the moving speed of the air filter by the air filter moving means,
3. An air conditioner according to claim 2, wherein a value obtained by adding the radius of the brush of the dust lifting means to the radius of the rotating body is set to be larger than an inter-axis distance between the rotating body and the brush. Indoor unit. The air conditioner room according to any one of claims 1 to 4, wherein the diameter of the brush bristles constituting the dust lifting means is smaller than the diameter of the filter hole of the air filter. Machine.

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