JP5423995B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner (indoor unit) including a filter and a filter rack.

  In recent years, an indoor unit of an air conditioner (air conditioner) having a filter cleaning function for automatically removing dust attached to a filter is becoming widespread. In this filter cleaning function, dust attached to the filter is scraped off by a cleaning brush in a dust box provided in the housing, and the dust is collected in the dust box.

  For example, as described in Patent Document 1, a dust box is usually provided so as to be detachable from an indoor unit, and dust collected in the dust box by cleaning can be easily collected. Similarly, the filter can be removed and cleaned.

  However, since the filter cleaning device of Patent Document 1 is disposed on the upper surface side of the indoor unit housing, it has been necessary to remove the filter cleaning device by manually grasping the filter cleaning device when attaching and detaching. Therefore, it is not easy to attach and detach the filter cleaning device, and it is difficult to confirm the attachment position.

JP 2010-175206 A

  Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide an air conditioner in which a filter cleaning unit can be easily attached and detached.

In order to achieve the above-described object, the present invention has several features described below. According to the first aspect of the present invention, an air including an indoor unit housing having an air suction port from the upper surface to the front surface, an air outlet on the lower surface side, and a filter disposed on the inner surface of the air suction port. In the harmony machine,
In the indoor unit casing in a body, the filter rack for detachably supporting the filter with detachably with respect to the indoor unit casing, into the filter rack, filter moving path portion of the filter is introduced A guide rib used as a knob when the filter is guided to the filter movement passage and the filter rack is detached from the indoor unit housing, and a filter movement for moving the filter along the filter movement passage. Means and a filter cleaning section for removing dust adhering to the filter are provided .

The invention according to claim 2, Oite to the claim 1, said guide rib includes a base end portion formed in parallel along the bottom surface of the filter moving path of the filter, from one end of the base end portion It is arranged to be inclined at a predetermined angle with respect to the bottom surface of the filter moving passage, and has a grip portion as the knob.

According to a third aspect of the present invention, in the second aspect of the present invention, the plate thickness of the grip portion is formed thicker than the plate thickness of the base end portion.

According to a fourth aspect of the present invention, in the second or third aspect , the tip of the gripping portion is provided with a convex portion for easily hooking a hand on the gripping portion.

According to a fifth aspect of the present invention, in the second , third, or fourth aspect , the base portion of the base end portion and the gripping portion is chamfered to guide the filter to the filter moving passage. It is characterized by.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the filter rack is disposed from the front surface of the indoor unit housing to a part of the upper surface, and the filter rack is disposed in the indoor unit. It is attached so that it can rotate centering on the edge part located in the upper surface side of an apparatus housing | casing, The said guide rib is arrange | positioned at the other end side of the said filter rack, It is characterized by the above-mentioned.

  According to the first aspect of the present invention, the filter moving passage in which the filter is introduced into a part of the filter rack that detachably supports the filter, and the guide rib for guiding the filter in the filter moving passage are provided, and the guide rib is the filter. By also serving as a knob for attaching / detaching the rack to / from the indoor unit casing, not only can the filter be attached smoothly, but also the attachment / detachment can be performed with one touch.

Further, the filter moving means for moving the filter to the filter moving passage, and a filter cleaning unit for collecting dust adhering to the filter by providing so as to be integrated with the filter rack, the automatic cleaning function of the filter It can also be applied to an air conditioner provided.

According to the second aspect of the present invention, the guide rib is inclined in a predetermined angle with respect to the bottom surface of the filter moving passage from one end of the base end portion formed in parallel along the bottom surface of the filter moving passage. By having the grip portion as a knob, the filter can be guided to the guide groove at the base end portion and can be attached and detached by the grip portion.

According to the third aspect of the present invention, since the thickness of the grip portion is thicker than the thickness of the base end portion, it is easy to grip with a finger and is not easily broken even when pressed with a finger.

According to the invention described in claim 4 , the tip of the gripping portion is provided with a convex portion for making it easier to hook the hand on the gripping portion, so that it can be easily picked by the finger and the finger's belly is hung. Easy to attach and detach.

According to the fifth aspect of the present invention, the base portion between the base end portion and the gripping portion is chamfered so as to guide the filter to the filter moving passage, so that the filter is more smoothly introduced into the filter moving passage. be able to.

According to the sixth aspect of the present invention, the filter rack is arranged from the front surface of the indoor unit housing to a part of the upper surface, and the filter rack rotates around the end located on the upper surface side of the indoor unit housing. Since the guide rib is disposed at the other end side of the filter rack, the guide rib is provided at a position away from the fulcrum when the filter rack is attached and detached. The filter rack can be removed with less force.

The principal part sectional view of the air harmony machine concerning one embodiment of the present invention. The perspective view of the upper surface panel of the said air conditioner. The principal part sectional drawing of the state which closed the front panel of the said air conditioner. The principal part sectional view in the state where the above-mentioned front panel opened in the normal operation mode. The principal part sectional view in the state where the above-mentioned front panel opened at the time of filter cleaning mode. The perspective view of the filter of the said air conditioner. The partial expansion perspective view of the stopper of the said filter. The partial expanded side view of the filter rack of the said filter. The schematic diagram explaining the relative structure of the said filter and a guide rail. The perspective view of the said filter cleaning unit. The perspective view of the state which attached the dust unit and the derivation | leading-out guide to the filter rack of the said filter cleaning unit. The perspective view of the said filter rack. The perspective view of the state which looked at the derivation | leading-out guide from the front side. The perspective view of the state which looked at the derivation | leading-out guide from the back side. The perspective view of the guide rail of a filter rack. Explanatory drawing explaining the positional relationship of a guide rail and a filter. (A), (b) Explanatory drawing explaining the position of the switch provided in the guide rail. The expansion perspective view of the guide rib provided in the filter rack. (A) Top view and (b) A-A 'line sectional drawing of the said guide rib. (A) The schematic diagram explaining the installation state of the said guide rib, (b) The schematic diagram explaining the modification of the example of installation of the said guide rib. The schematic diagram of the state which inserted the filter in the filter movement channel | path. The schematic diagram explaining the positional relationship of the rotation fulcrum of a filter rack, and a guide rib. (A), (b) Explanatory drawing explaining the use procedure in the case of using a guide rib as a knob. (A) The schematic diagram which shows the initial position of a filter, (b) The schematic diagram of the state which moved the filter to the front side, (c) The schematic diagram of the state which moved the filter to the back side.

  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, the indoor unit 1 of this air conditioner includes a base panel 10 that is held on a wall surface via a back plate 10a that is fixed to a wall surface (not shown).

  Although not shown, the base panel 10 includes a pair of left and right side plates, and the heat exchanger 2 and the cross flow fan 3 are supported between the side plates in the left and right directions (in a direction orthogonal to the paper surface in FIG. 1). Yes.

  In this example, the heat exchanger 2 is a combination of a front side heat exchanger 21 arranged on the front side of the main body and a rear side heat exchanger 22 arranged on the rear side of the main body in a lambda type. It has been. In the present invention, specific configurations of the heat exchanger 2 and the cross flow fan 3 may be arbitrarily selected according to specifications.

  In addition, on the lower surface side of the base panel 10, there are provided an up-and-down air direction plate 17, a left-and-right air direction plate 18, a diffuser 19, etc. of the air outlet. There is no particular limitation.

  The base panel 10 includes an upper panel 11 covering the upper surface of the heat exchanger 2, a front panel 12 disposed on the front surface of the heat exchanger 2, and a side panel (not shown) disposed along the side plate. I have. Each panel consists of a molded product of synthetic resin.

  The upper panel 11 is provided with an air suction grill 13 for taking indoor air into the indoor unit 1. Referring also to FIG. 2, the upper panel 11 is formed so as to cover the entire upper surface of the indoor unit 1, and a cross-shaped air suction grill 13 is formed over the entire surface.

  The front panel 12 is provided with an open panel 14 that forms an air passage on the front side of the front-side heat exchanger 21 by being opened during operation. Referring also to FIG. 3, the open panel 14 is a rectangular panel formed so as to cover the front surface of the indoor unit 1.

  On the back surface of the open panel 14, a swing arm 14a as an open / close panel driving means for opening and closing the open panel 14, a pinion gear 14b connected to a drive motor (not shown), and a lower side of the open panel 14 are supported. A driven arm 14d that is driven in accordance with the moving operation is provided.

  One end of the swing arm 14a is rotatably attached to the back surface of the open / close panel 14, and the other end is provided with a sector gear 14c that meshes with the pinion gear 14b. The swing arm 14 a and the sector gear 14 c are provided at both ends of the open / close panel 14.

  In the present invention, the sector gear 14c has a fan-shaped gear portion, and the opening degree of the open / close panel 14 can be adjusted in three stages of closed, half open, and full open according to the meshing position with the pinion gear 14b. .

  That is, as shown in FIG. 3, in a state where one end side of the sector gear 14c is engaged with the pinion gear 14b, the open / close panel 14 is in a closed state. When the pinion gear 14b is rotated a predetermined angle counterclockwise from this state, the sector gear 14c is rotated clockwise, so that the open / close panel 14 attached to the tip of the swing arm 14a is moved to the front as shown in FIG. It is opened to project to the side.

  By further rotating the pinion gear 14b counterclockwise and meshing the other end side of the sector gear 14c with the pinion gear 14b, as shown in FIG. 5, the open / close panel 14 is further pushed forward to the front side. It becomes a state.

  Inside the indoor unit 1, a filter 4 is provided along the air suction grille 13. As shown in FIGS. 6 to 9, the filter 4 has a grid-like filter frame 41 and a mesh sheet 42 stretched along the filter frame 41. In this example, the filter frame 41 is made of polypropylene or the like. The mesh sheet 42 is formed of polyethylene terephthalate.

  The filter frame 41 is formed in a lattice shape having a plurality of beams including an outer frame along a slide direction (up and down direction in FIG. 6) and a width direction (left and right direction in FIG. 6). Has been.

  When the filter 4 is deformed at the time of cleaning the filter, the beam in the sliding direction of the filter frame 41 is engaged with a locking convex portion 244 described later, so that the filter 4 is elastically restored by the elastic restoring force generated by the filter 4 being curved. 4 is provided with a locking hole 45 as a filter position shift prevention means for preventing the end portion in contact with a stopper 250 (described later) from shifting.

  The locking holes 45 are through-holes formed in the thickness direction of the filter 4, and are provided in two places (two places in total). When the filter 4 is bent at the time of filter cleaning, the locking hole 45 is inserted into a locking projection 244 provided on the inner side of a second guide surface 243 of a derivation guide 240, which will be described later. The movement in the direction is restricted.

  According to this, when the filter 4 is bent out of the indoor unit casing, the end of the filter 4 is prevented from being separated from the stopper 250 by the elastic restoring force, and the end of the filter 3 is detected. A malfunction of the limit switch 320 can be reliably prevented.

  At both ends in the width direction of the filter frame 41, rack gears 43, 43 are provided that are engaged with gears (not shown) connected to the driving means when the filter 4 is slid in the vertical direction. The rack gears 43 and 43 are formed continuously along the sliding direction of the filter 4 (the vertical direction in FIG. 6), and are formed integrally with the filter frame 41.

  In this example, in the filter frame 41, rack gears 43 and 43 are integrally formed on one surface 41a (lower surface in FIG. 8), and the other surface 41b (upper surface in FIG. 8) is formed on a smooth surface. According to this, even if the filter 4 is slid in a state where the other surface 41b of the portion where the rack gears 43 and 43 are formed is in contact with the inner surface of the housing, it is possible to prevent the generation of abnormal noise.

  The rack gear 43 is preferably hollowed inside. That is, since the inside of the rack gear 33 is thinned, the filter 4 can be easily bent and deformed when the filter 4 is cleaned. Furthermore, deformation due to thermal shrinkage during molding can be suppressed.

  In this example, the rack gears 43 and 43 are integrally formed with the filter frame 41, but the rack gears 43 and 43 may be formed separately and bonded to the filter frame 41.

The filter 4 is slidable because both ends in the width direction are supported by the filter moving passage. In this example, the filter movement path is such that a first filter movement path 211 formed on the filter rack 200 side and a second filter movement path 310 formed in a part of a guide frame 300 described later are aligned with each other. One filter moving passage is formed. As shown in FIG. 9, the side surface of the filter 4 is provided with a notch 44 for preventing the filter 4 from interfering with the first filter moving passage 211 when the filter 4 is curved.

The cutout portion 44 is formed so as to leave a remaining portion 44 a on the upper end side and the lower end side of the side surface of the filter frame 41. Referring to FIG. 9 together, the filter 4 has a width in the width direction W1, a width in the notch 44 in the width direction W2, and a length between the first filter moving passages 211 and 211 is W3. When formed, W1>W3> W2.

  According to this, when the filter 4 is pushed and curved in the sliding direction, a portion corresponding to the notch 44 of the filter 4 passes through the first filter moving passage 211 and bulges outward. it can. Further, even when the filter 4 is curved, the remaining portion 44 a is sandwiched between the first filter movement passages 211, so that the filter 4 does not fall out of the first filter movement passages 211.

  The mesh sheet 42 is made of a fine mesh-like sheet material, and is formed of polyethylene terephthalate in this example. As long as the mesh sheet 42 is a mesh that does not allow relatively coarse dust in the air to enter the indoor unit 1, the shape and material thereof may be arbitrarily selected, and antibacterial materials, fungicides, etc. are blended. May be.

  Further, in this example, the mesh sheet 42 is formed by heat sealing with the filter frame 41. However, the filter frame 41 and the mesh sheet 42 may be integrally formed, and the shape of the mesh sheet 42 also depends on the specifications. Can be arbitrarily selected.

  A filter cleaning unit 5 for cleaning the filter 4 is further provided inside the indoor unit 1. Referring to FIG. 10 and FIG. 11 together, the filter cleaning unit 5 holds the dust box 100 that collects dust attached to the filter 4, the dust box 100 and the filter 4 detachably, and is itself an indoor unit. 1, a filter rack 200 detachably provided from 1, a guide 240 for bringing the filter 4 out of the indoor unit housing 1 in the correct direction when the filter 4 is bent, and the filter rack 200 supported by the indoor unit 1. And a guide frame 300 for guiding the slide of the filter 4.

  In this example, the dust box 100 and the filter rack 200 are provided in a state of being arranged in the horizontal direction of the indoor unit 1. Since each dust box 100 and filter rack 200 have the same configuration, only one will be described below.

  Referring also to FIG. 1, the dust box 100 cleans the upper dust box 110 that cleans one side of the filter 4 (windward side in FIG. 1) and the other side of the filter 4 (leeward side in FIG. 1). It has a lower dust box 120 and is arranged so as to face each other with the filter 4 interposed therebetween.

  Inside the upper dust box 110, a cleaning brush 111 that cleans dust attached to the filter and a dust storage portion 112 that stores the dust collected by the cleaning brush 111 are provided.

In this example, the cleaning brush 111 is rotatably provided via a rotation means (not shown), only the cleaning brush 111 when sliding the filter 4 in the counter front side (FIG. 1, 10a side) The cleaning brush 111 is not in contact with the filter 4 when moving to the front side (the open panel 14 side in FIG. 1) in contact with the filter 4.

  The lower dust box 120 is arranged along the lower surface of the filter 4 and functions as a filter receiver for preventing the filter 4 from bending when the filter 4 is brought into contact with the cleaning brush 111 of the upper dust box 110. At the same time, dust spilled on the back of the filter 4 is collected.

  In the present invention, the specific configuration of the dust box 100 may be an arbitrary matter, and the configuration may be arbitrarily changed according to specifications.

  Referring to FIG. 11 in which the dust box 100 and the filter rack 200 are combined, and FIG. 12 in which the filter rack 200 is in a single state, the filter rack 200 is arranged on the left and right sides arranged at almost the same interval as the width of the filter 4. A pair of side frames 210, 210, for example, two reinforcing frames 220 horizontally spanned between the side frames 210, 210 with a predetermined interval, and a vertical interval with a predetermined interval between the side frames 210, 210. For example, two guide frames 230 are provided.

  The side frames 210 and 210 are formed in a dogleg shape that is attached so as to cover the front surface of the front-side heat exchanger 21, and the first filter moving passages 211 and 211 in which the inner filter 4 moves slidably. Is formed.

  The first filter moving passages 211 and 211 are connected to a filter moving passage 310 formed in a part of the guide frame 300 described later by attaching the filter rack 200 to the guide frame 300.

  Filter derivation sections 212 and 212 are provided on the front side (front side in FIG. 12) of the side frame 210. The filter lead-out portions 212 and 212 are guide portions that are provided to define the start and end points of lead-out of the curved portion when the filter 4 is bent. As described with reference to FIG. Is formed so that the distance between them is W3.

  Guide plates 213a and 213b for smooth derivation of the filter 4 are provided at both ends of the opening edges of the filter derivation portions 212 and 212, respectively. The guide plates 213a and 213b protrude so as to protrude inward from the side surface of the first filter moving passage 211, and the edges thereof are curved so that the filter 4 is not caught.

  A feed gear 214 that meshes with the rack gear 43 of the filter 4 is provided inside the side frame 210. The feed gear 214 is connected to a drive motor (not shown), and a part of the feed gear 214 is exposed in the first filter moving passage 211. The filter 4 is arranged so that the smooth portion is on the windward side and the side on which the rack gear 43 is formed is on the leeward side. It meshes with the rack gear 43 of the filter 4 inside the first filter moving passage 211.

  The filter rack 200 is further provided with a derivation guide 240 that guides the filter 4 so that it goes out of the filter movement passage 211 in the correct direction when the filter 4 is bent. Referring to FIGS. 13 and 14, derivation guide 240 is formed in an arch shape having pivot arms 241 and 241 that are pivotably attached to one end side of filter rack 200.

  The lead-out guide 240 has a first guide surface 242 that holds the filter 4 in a vertical state, one end connected to the upper end of the first guide surface 242, and the other end inclined toward the front side of the indoor unit 1. A second guide surface 243.

Referring also to FIG. 11 to 14, deriving guide 240 has been rotatably supported via a rotation shaft 241 a filter rack 200, the state of being fixed to a filter rack 200 (FIG. 11 In this state, the first guide surface 242 supports the filter 4 in a substantially vertical state along the front surface of the indoor unit 1.

  The second guide surface 243 is extended obliquely upward from the upper end of the first guide surface 242, and the curved filter 4 is guided along the second guide surface 243 during filter cleaning. A deformed portion 4a of the filter 4 to be described later is led obliquely upward.

  Two locking protrusions 244 that are inserted into the locking holes 45 of the filter 4 described above are provided at the upper end (see FIG. 14) on the inner side of the second guide surface 243. The locking convex portion 244 is formed by a convex rib extending from the second guide surface 243 toward the indoor unit unit 1, and the tip thereof is chamfered so as to easily enter the locking hole 45 of the filter 4.

The derivation guide 240 also serves as a release lever when removing the filter rack 200 from the indoor unit 1. Deriving guide 240, by rotating shaft 241a in the bearing holes (not shown) of the filter rack 200 is pivotally supported, by contrast filter rack 200, the lower end of that is mounted to be opened and closed.

  In this example, the rotating shaft 241a is provided with a coil spring (not shown), and the derivation guide 240 is always spring-biased via the coil spring.

  The derivation guide 240 is provided with a slide type locking claw and a driving mechanism (both not shown) for fixing the derivation guide 240 to the filter rack 200 in a closed state. In the present invention, the locking claw and its driving mechanism are optional items, and a specific description thereof will be omitted.

  A stopper 250 that restricts the movement of the filter 4 by contacting the lower end of the filter 4 is provided on the lower end side of the filter rack 200. Referring to FIGS. 1 and 17 together, the stopper 250 is bridged between filter guides 300 and 300, which will be described later, along the lower end of the filter rack 200, and the lower end of the filter 4 abuts a part thereof. This prevents the filter 4 from sliding below the stopper 250.

  Next, with reference to FIGS. 15 to 17, the guide frame 300 is formed in an L shape that is arranged from the front surface to the upper surface of the indoor unit 1. The guide frame 300 is provided with a second filter moving passage 310 through which the filter 4 is guided.

  The second filter moving passage 310 extends substantially horizontally from the side surface 301 of the guide frame 300, and is bent at a substantially right angle from one end of the bottom wall 311 and a bottom wall 311 that supports the lower surface of the rack gear 43 of the filter 4. It is formed in an L-shaped cross section having a side wall 312 parallel to 301.

  According to this, since the side surface of the rack gear 43 is supported by the side wall 312 in the filter 4, it is possible to prevent the filter 4 from being distorted during sliding and being prevented from moving.

  Since the guide frame 300 shown in FIG. 15 is disposed in the center of the indoor unit 1, second filter moving passages 310 are formed on both sides of the guide frame 300 to support the filters 4 and 4 on both sides. However, the guide frames 300 disposed on both ends of the indoor unit 1 are disposed only on the side surfaces in the direction in which the one filter 4 is disposed.

The top panel 11 is attached to the top surface of the bottom wall 311, whereby the second filter moving passage 310 is formed. Here, one end side of the second filter movement passage 310 is formed so as to communicate with one outlet of the first filter movement passage 211 described above via the filter cleaning unit 5, and the first filter of the filter rack 200 is formed. The moving path 211 is smoothly guided to the second filter moving path 310 of the filter guide 300.

  The other end side of the second filter moving passage 310 is opened between the base panel 10 of the indoor unit 1 and the rear heat exchanger 22 so that the filter 4 can be introduced into the space therebetween. ing.

  A filter detection unit 320 that detects the lower end position of the filter 4 is provided on the lower surface of the guide frame 300. As shown in FIG. 17, the filter detection unit 320 includes a limit switch 321 that protrudes movably from the side surface of the guide frame, and a guide unit 322 that guides the lower end of the filter 4 toward the limit switch 321. And.

The limit switch 321 is arranged such that one end side thereof is rotatably connected and the free end side is turned from the bottom side to the upper side of the guide frame 300. According to this, since the limit switch 321 is pressed on the side surface of the filter 4, detection errors can be reduced. Furthermore, the generation of sound can be suppressed as compared with the case of pressing on the rack surface.

The guide portion 322 is provided so as to surround the limit switch 321, and a guide groove 323 for guiding the lower end of the filter 4 is provided in a part of the guide portion 322. The guide groove 323 is formed so as to communicate with the outlet of the first filter moving passage 211 described above.

  In this example, the filter detection unit 320 is provided at one place for one filter 4, but may be provided at two places so as to detect both ends of the filter 4, for example.

  18 to 23, the filter rack 200 is provided with a guide rib 400 for safely inserting the filter 4 into the filter moving passage 211 when the filter 4 is attached to the filter rack 200.

  The guide ribs 400 are provided at the open ends of the filter moving passages 211 and are provided at the lower ends of both ends in the width direction of the filter rack 200. When the filter 4 is attached to the filter rack 200, guide grooves 260 and 260 for receiving the rack gear 43 provided in the filter 4 are provided in the filter moving passage 211.

  The guide grooves 260 and 260 are formed to be further recessed from the filter moving passage 211 to accommodate the rack gear 43, and are formed from the front end to the rear end of the filter rack 200. The inlet side 261 of the guide grooves 260 and 260 is tapered so that the rack gear 43 of the filter 4 can easily enter the guide grooves 260 and 260.

  As shown in FIGS. 18 and 19, the guide rib 400 stands upright from the side wall 200 a of the filter rack 200 and is formed in parallel along the bottom surface of the guide groove 260, and the guide of the base end portion 410. A gripping portion 420 is provided so as to stand substantially perpendicular to the bottom surface of the guide groove 260 from the inlet side 261 of the groove 260, and is provided adjacent to the inlet side 261 of the guide groove 260.

  The base end portion 410 is disposed in parallel with a predetermined distance from the filter moving passage 211 and the guide groove 260 and is disposed so as to block a part of the upper surface side of the filter moving passage 211 and the guide groove 260.

  In this example, the gripping portion 420 is formed at a substantially right angle to the filter rack 200 as shown in FIG. 20A, but as shown in FIG. The angle may be arbitrarily changed according to the specification.

  The surfaces of the base end portion 410 and the base portion 430 of the grip portion 420 facing the filter moving passage 211 are formed in an arc shape or a chamfer for smooth insertion when the filter 4 is inserted. In this example, the base portion 430 is formed in an arc shape, but a roller or the like may be attached as long as it can be smoothly inserted.

  The grip portion 420 is formed so that its plate thickness is larger than the plate thickness of the base end portion 410. In FIG. 19 (b), the plate thickness of the grip portion 420 gradually increases from the base portion 430 side, and is formed to be about twice as thick as the base end portion 410. 420 has an appropriate thickness, is easy to pick by hand, and further increases the strength.

  A convex portion 421 is provided at the tip of the grip portion 420 so that the finger can be easily caught when the grip portion 420 is picked by the finger. In this example, the convex portion 421 is formed in a mushroom shape at the tip of the gripping portion 420, but may have a shape other than this, and a knurled joint may be formed as a slip stopper.

  Referring to FIG. 21, when attaching the filter 4 to the filter rack 200, first, the front end of the filter 4 is inserted into the filter moving passage 211 between the guide groove 260 and the base end portion 410 and is directly directed to the other end side. Just slide it.

  According to this, the rack gear 43 of the filter 41 is automatically pushed into the guide groove 260 and meshed with a gear (not shown). At that time, since the base portion 430 of the guide rib 400 is in sliding contact with the inner surface of the filter 4, the guide rib 400 can be attached smoothly without generating abnormal noise.

  As shown in FIGS. 1 and 22, the filter rack 200 holding the dust box 100 is disposed on the filter guide 300 on the front side (left side in FIG. 1) of the indoor unit housing 1 at the filter cleaning unit end 130. The filter cleaning unit end portion 130 is detachably attached to the fulcrum S.

  Furthermore, the above-described guide rib 400 is disposed at a position symmetrical to the fulcrum S with the filter rack 200 interposed therebetween. Accordingly, when removing the filter rack 200 by gripping the grip portion 420 with a finger, the filter rack 200 can be removed with a smaller force by the lever principle.

  When removing the filter rack 200 from the indoor unit housing 1, as shown in FIG. 23A, a method of pulling the gripping portion 420 of the guide rib 400 that appears when the lead-out guide 240 is opened and pulling it toward the front side, As shown in FIG. 23B, there are two methods of pushing up the lower surface of the gripping part 420 from the bottom to the top with the belly of the finger, and the filter rack 200 can be removed with one touch by either method. When the filter rack 200 is removed, the dust box 100 and the filter 4 attached to the filter rack 200 can be removed from the indoor unit housing 1 at the same time.

  Next, an example of the filter cleaning procedure of the air conditioner of the present invention will be described with reference to FIG. Prior to describing the procedure for cleaning the filter, in this example, the direction in which the filter 4 is moved toward the stopper 250 is referred to as “forward direction”, and the direction in which the filter 4 is moved toward the back side of the indoor unit 1 is referred to as “reverse direction” ".

When filter cleaning is started, a control unit (not shown) first initializes the filter cleaning unit 5. Initialization confirms whether or not the tip of the filter 4 is in contact with the stopper 250 by the limit switch 321 , and further confirms whether or not the cleaning brush 111 in the dust box 100 is disposed in non-contact with the filter 4. (See FIG. 24 (a)).

  In addition, the control unit issues a fully open command to the drive means of the open panel 14, and in response to this, the swing arm 14a rotates via a drive motor (not shown), and the open panel 14 is fully opened.

After the open panel 14 is fully opened, the control unit starts cleaning the filter. The control unit first drives the driving means (not shown) in the filter feed direction to feed out the filter 4. In this example, the cleaning brush 111 is brought into contact with the filter 4 only when moved in the filter return direction. It has become.

  The control unit sends out the filter 4 by a predetermined length at a time (in this example, the minimum movement amount 60 mm to the maximum movement amount 130 mm) and removes the dust adhered to the filter 4 evenly, and the same length in the filter return direction. By performing the reciprocating operation of returning each step in a plurality of steps, dust adhering to the cleaning brush 111 is frequently transferred into the dust box 110.

  With one end of the filter 4 abutting against the stopper 250, the control unit moves the filter 4 in the filter feed direction. Thereby, a part of the filter 4 is bent and deformed, and the deformed portion 4 a is led to the space formed in the front surface of the indoor unit 1 and the open panel 14.

As shown in FIG. 24B, when the dust box 100 moves to the rear end of the filter 4, the deformation amount of the filter deforming portion 4a becomes the maximum value, and the filter deforming portion 4a includes the front surface of the indoor unit 1 and the open panel 14. It is put out in the space formed between the back of the.

  At that time, the filter 4 is guided by the second guide surface 242 of the derivation guide 240 so as to be ejected obliquely upward. According to this, since the filter deformation part 4a is projected obliquely upward between the front surface of the indoor unit 1 and the back surface of the open panel 14, the open panel 14 can be opened and closed by contacting the open panel 14 or the like. Can be prevented.

  Conversely, when the front end side (butting side) of the filter 4 is cleaned by the dust box 100, the rear end side of the filter 4 is formed on the back side of the indoor unit 1 as shown in FIG. Into the confined space.

As described above, when the series of cleaning steps is completed, the control unit returns the filter 4 to a state where the limit switch 321 operates again, and then enters a standby state. In this embodiment, the method for attaching and detaching the filter 4 and the filter rack 200 and the initialization of the filter 4 at the time of attachment and detachment may be arbitrary, and the description thereof is omitted.

1 Air conditioner (indoor unit)
14 Open Panel 2 Heat Exchanger 3 Cross Flow Fan 4 Filter 41 Filter Frame 42 Mesh Sheet 43 Rack Gear 44 Notch 45 Locking Hole 5 Filter Cleaning Unit 100 Dust Box 200 Filter Rack 260 Guide Groove 300 Filter Guide 400 Guide Rib 410 Base End 420 Grip part

Claims (6)

In the air conditioner including an indoor unit housing in which an air suction port is provided from the upper surface to the front surface, an air outlet is provided on the lower surface side, and a filter is disposed on the inner surface of the air suction port.
In the indoor unit casing in a member, detachably provided with a filter rack for detachably supporting the filter with respect to the indoor unit casing,
In the filter rack, a filter moving passage through which a part of the filter is introduced, the filter is guided to the filter moving passage , and used as a knob when the filter rack is detached from the indoor unit housing. a guide rib for a filter moving means for moving the filter along the filter moving passage, an air conditioner, characterized in that the filter cleaning unit for removing dust adhering to the filter is provided. The guide rib is disposed so as to be inclined at a predetermined angle with respect to a bottom surface of the filter moving passage from one end of the base end portion formed in parallel with a bottom surface of the filter moving passage of the filter. The air conditioner according to claim 1, further comprising a grip portion as the knob. The plate thickness of the base end portion, an air conditioner according to claim 2, characterized in that the thickness of the grip portion is formed thick. The air conditioner according to claim 2 or 3 , wherein a convex portion is provided at a tip of the grip portion so that a hand can be easily hooked on the grip portion. 5. The air conditioner according to claim 2 , 3 or 4 , wherein a base portion of the base end portion and the grip portion is chamfered to guide the filter to the filter moving passage. The filter rack is arranged from the front surface to a part of the upper surface of the indoor unit housing, and the filter rack is attached to be rotatable around an end portion located on the upper surface side of the indoor unit housing. The air conditioner according to any one of claims 1 to 5 , wherein the guide rib is arranged on the other end side of the filter rack.

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