JP2008128620A - Indoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner facilitating separation of dust scraped by a brush from the brush, facilitating entrance of the dust into a dust box, not requiring time for disposal and replacement of an object for accumulating the dust, and preventing misplacement of components of a filter cleaning device. <P>SOLUTION: In the indoor unit 100 for an air conditioner, a tabular filter 5 for dust, a heat exchanger, and a blow fan are arranged in an air passage from a suction opening to a blow-out opening. It is provided with a driving part 11 moving the tabular filter 5 in parallel with a plate face, the cleaning brush 19 scraping of dust attached to the tabular filter 5 following movement of the tabular filter 5, a scraping part 12 scraping off dust scraped off from the tabular filter 5 and attached to the cleaning brush 19, the dust box 17 holding the dust scraped off and falling from the cleaning brush 19, and a dust collecting sheet 31 laid in the dust box 17 and capturing the dropped dust. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner including a plate filter cleaning mechanism.

  2. Description of the Related Art Conventionally, in an air conditioner (indoor unit) in which a dust removing filter and a blower fan are respectively disposed in an air passage connecting a suction port and an outlet provided in a main body (housing), the main body A sliding means (driving unit) for reciprocally moving the filter, a brush arranged to contact the filter along the movement path of the filter, and a brush for cleaning the surface of the filter; A filter cleaning device comprising a supporting member (dust box) for supporting the air, and a container (paper pack) for storing the dust removed by the brush detachably attached to the supporting member. A harmony machine (indoor unit) is known (for example, see Patent Document 1).

JP 2004-347245 A

  However, the indoor unit of the conventional air conditioner has a problem that dust scraped off by the brush is difficult to separate from the brush. Further, since the paper pack for storing the dust is located above the filter and the brush, there is a problem that it is difficult for the dust to enter the paper pack.

  Also, when the paper pack containing dust is full, the dust box must be removed from the air conditioner, the inner paper pack discarded, the new paper pack installed in the dust box, and the dust box installed in the air conditioner There is a problem that it takes time to dispose and replace the paper pack. Further, there is a problem that the quality of the air conditioner is deteriorated because the parts of the filter cleaning device are lost during the disposal and replacement of the paper pack.

  The present invention has been made in view of the above, and the dust scraped off by the brush is likely to be detached from the brush, the dust is likely to enter the dust box, and it does not take time to dispose of or replace the dust storage object. An object of the present invention is to obtain an indoor unit of an air conditioner in which the parts of the filter cleaning device are not lost.

  In order to solve the above-described problems and achieve the object, the present invention provides an indoor unit for an air conditioner in which a dust filter, a heat exchanger, and a blower fan are arranged in an air passage extending from an inlet to an outlet. In the unit, a drive unit that moves the plate filter parallel to the plate surface, a cleaning brush that scrapes off dust adhering to the plate filter as the plate filter moves, and a scraper from the plate filter. A stripping portion for stripping off dust adhered to the cleaning brush, a dust box for storing the dust that has been stripped off from the cleaning brush, and a dust collecting sheet that is laid in the dust box and adheres the dust that has fallen It is characterized by providing.

  According to the present invention, the dust that has been scraped off by the brush is easy to separate from the brush, the dust is easy to enter the dust box, and it does not take time to dispose of the dust, and there is no loss of parts during disposal. The effect is that an indoor unit of the machine can be obtained.

  Embodiments of an indoor unit of an air conditioner according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing a first embodiment of an indoor unit of an air conditioner according to the present invention, and FIG. 2 is a cross-sectional view of an essential part showing a first embodiment of the indoor unit of an air conditioner according to the present invention. FIG. 3 is a cross-sectional view of a main part showing a state where dust adhering to the plate filter is being scraped off, and FIG. 4 is a main part showing a state where a dust collecting sheet laid in the dust box is taken out. FIG.

  As shown in FIG. 1, an indoor unit 100 of an air conditioner includes a lattice-shaped suction port 2 formed in an upper panel 8 installed at the upper part of the casing 1, and an outlet 3 provided at the lower part of the casing 1. And an air passage 4 formed in the housing 1 between the inlet 2 and the outlet 3.

  In the air passage 4, a plate filter 5 for removing dust, a heat exchanger 7 and a blower fan 6 are arranged in this order from the suction port 2 side. The blower fan 6 is rotationally driven to suck indoor air from the suction port 2 into the air passage 4, dust is removed by the plate filter 5, cooled or heated by the heat exchanger 7, and blown out from the blowout port 3 into the room.

  The indoor unit 100 of the air conditioner removes the air passing through the air passage 4 by two left and right plate-like filters 5 that are installed immediately after the suction port 2 and are curved in an arc shape. A rack 5 a that meshes with the pinion 20 is provided at the center of the back surface of each plate filter 5.

  Each pinion 20 is driven by a single drive motor (not shown), and each plate filter 5 is moved in the front-rear direction one by one in parallel to the plate surface, so that dust adhering to the surface of the plate filter 5 is removed. to clean up. The pinion 20 and the rack 5a constitute a drive unit 11a.

  As shown in FIG. 1 and FIG. 2, a roller-type cleaning brush 19 that rotates around a horizontal shaft 21 for scraping and removing dust adhering to the surface of the plate-like filter 5 on the upper front side of the housing 1. Is installed. The cleaning brush 19 is urged by a pressing spring 22 supported at one end by a support portion 23 provided on the housing 1 and is pressed against the surface of the plate filter 5.

  A hook-shaped stripping member 24 is attached to the tip of the pressing spring 22 so as to strip off the dust scraped from the plate filter 5 and attached to the cleaning brush 19 from the cleaning brush 19. The portion contacts the cleaning brush 19 and transmits the urging force of the push spring 22 to the cleaning brush 19.

  A holding portion 25 that holds the stripping member 24 slidably in the direction of the cleaning brush 19 is provided in the housing 1 (dust box 17). The bowl-shaped stripping member 24, the push spring 22, and the holding portion 25 constitute the stripping portion 12.

  A pressing member 26 that contacts the back surface of the plate filter 5 and presses the plate filter 5 against the cleaning brush 19 is provided. The pressing member 26 is supported by a base member 29 provided in the housing 1 and is urged by a pressing spring 27 that is slidably held by a guide member 28. The base member 29 also holds the pinion 20.

  The housing 1 on the surface side of the plate filter 5 is provided with a dust box 17 having an opening 17b on the front side. The opening 17b is provided with a swingable opening / closing cover 30 that is supported by the support shaft 30a and opens and closes the opening 17b.

  At the rear end portion of the dust box 17, a pressing portion 17 a is provided that prevents the escape by pressing the plate-like filter 5 from the surface side and pressing it against the pinion 20. A dust collection sheet 31 is laid in the dust box 17.

  The drive unit 11 a, the pressing member 26, the pressing unit 17 a, the cleaning brush 19, the stripping unit 12, the dust box 17, the opening / closing cover 30, the dust collecting sheet 31, and the like described above constitute the filter cleaning device 11.

  Next, the operation of each part of the filter cleaning device 11 will be described with reference to FIG. The rack 5a and the pinion 20 mesh with each other, and the plate-like filter 5 reciprocates in the directions of arrows F and G (parallel to the plate surface) shown in FIG.

  When the plate filter 5 is driven by meshing the rack 5a and the pinion 20, a component force is generated so that the plate filter 5 (rack 5a) escapes from the pinion 20, so that the plate filter 5 is prevented from escaping. Further, a projection (pressing portion) 17a of the dust box 17 is provided.

  A roller-shaped cleaning brush 19 rotates around the support shaft 21. The cleaning brush 19 is pressed against the surface of the plate-like filter 5 by being pressed by the hook-shaped stripping member 24 attached to the pressing spring 22. Furthermore, in order to improve the dust scraping performance of the cleaning brush 19, a pressing member 26 is provided for contacting the back surface of the plate filter 5 and pressing the plate filter 5 against the cleaning brush 19, and the pressing member 26 is pressed by the spring. 27 to the cleaning brush 19 side.

  The dust on the surface of the plate-like filter 5 is scraped off by the cleaning brush 19, the dust adhering to the cleaning brush 19 is peeled off by the bowl-shaped stripping member 24, and the dust that is peeled off and falls is stored in the dust box 17 and stored. In the air conditioner 100 of the first embodiment, the dust collection sheet 31 that adheres dust is laid in the dust box 17 instead of collecting dust directly in the dust box 17.

  Next, with reference to FIGS. 2-4, the whole effect | action of the plate filter cleaning apparatus 11 is demonstrated. When the pinion 20 is driven in the direction of arrow A in FIG. 2 by a drive motor (not shown), the plate filter 5 moves in the direction of arrow F, and the cleaning brush 19 moves in the direction of arrow C as the plate filter 5 moves. Rotate.

  If the moving speed of the plate filter 5 and the rotation speed of the cleaning brush 19 are the same, the dust adhering to the plate filter 5 is difficult to scrape off by the cleaning brush 19, so that the cleaning brush 19 is rotated by a brake mechanism (not shown). Apply the brakes. When the rotation speed of the cleaning brush 19 is slowed by the brake, the dust adhering to the plate filter 5 is efficiently scraped off by the cleaning brush 19, and the dust is transferred to the cleaning brush 19.

  The dust 32 transferred to the cleaning brush 19 is peeled off by the bowl-shaped stripping member 24, falls downward (in the direction of arrow D), and adheres to the upper surface of the dust collection sheet 31. By providing the stripping portion 12 and providing the dust box 17 below the stripping portion 12, the dust 32 transferred to the cleaning brush 19 efficiently falls into the dust box 17.

  As shown in FIG. 3, after the plate filter 5 has moved to the movement limit and the cleaning of the plate filter 5 has been completed, the pinion 20 is rotated in the reverse direction in the direction of arrow B in FIG. To move. At this time, rotation of the cleaning brush 19 is stopped by a brake mechanism (not shown) to prevent the dust remaining on the cleaning brush 19 from being reversely transferred to the plate filter 5.

  As shown in FIG. 4, when dust 32 accumulates on the dust collecting sheet 31, the open / close panel 10 that is swingably attached to the upper panel 8 by the support shaft 10 a is opened, and then the open / close cover 30 of the dust box 17 is opened. Open.

  A hand is put in the dust box 17, and the dust collecting sheet 31 to which the dust 32 is attached is taken out and discarded. Next, a new dust collecting sheet 31 is laid in the dust box 17, the open / close cover 30 and the open / close panel 10 are closed, and the cleaning of the dust accumulated in the dust box 17 is completed.

Embodiment 2. FIG.
In the first embodiment, one dust collection sheet 31 is laid in the dust box 17, but in the second embodiment, a dust collection sheet pack (not shown) in which a plurality of dust collection sheets 31 are stacked. Is installed in the dust box 17. If the dust collection sheet pack is installed in the dust box 17, the dust collection sheets 31 in which the dust 32 is accumulated may be discarded one by one, so that the trouble of laying a new dust collection sheet 31 in the dust box 17 can be saved.

Embodiment 3 FIG.
FIG. 5 is a cross-sectional view of a main part showing a third embodiment of the indoor unit of the air conditioner according to the present invention, and FIG. 6 is a plan view showing the dust collecting sheet 331 of the third embodiment.

  As shown in FIGS. 5 and 6, the air conditioner 300 according to the third embodiment has a bag shape in which three edge portions 331 a of two dust collection sheets are bonded together in a bag shape, and one is a dust storage port 331 b. The dust collection sheet 331 is used. As shown in FIG. 5, the dust container opening 331 b is opened on the cleaning brush 19 side and installed in the dust box 17.

  By making the dust collection sheet into a bag shape and opening the dust container port 331b to the cleaning brush 19 side, it is possible to prevent the dust 32 that is scraped off and floated by the cleaning brush 19 from adhering to the side wall of the dust box 17. The dust 32 can be collected efficiently.

Embodiment 4 FIG.
In the indoor unit of the air conditioner of Embodiment 4, an adhesive is applied to the surfaces of the dust collection sheets 31 and 331. The adhesive makes it difficult for the dust 32 to peel off from the surfaces of the dust collection sheets 31 and 331, and the dust 32 is less likely to fall into the dust box 17 when the dust collection sheets 31 and 331 are discarded.

Embodiment 5. FIG.
FIG. 7: is principal part sectional drawing which shows Embodiment 5 of the indoor unit of the air conditioner concerning this invention. In the first to fourth embodiments, the opening / closing cover 30 of the dust box 17 is opened and closed by rotating around the support shaft 30a as a fulcrum, but in the air conditioner 500 of the fifth embodiment, as shown in FIG. The opening / closing cover is a sliding opening / closing cover 530 with a lock mechanism.

  When the plate-like filter 5 is being cleaned by the filter cleaning device 11, the elastic hook portion 530 a provided on the upper part of the slide type opening / closing cover 530 is engaged (locked) with the concave portion 17 c provided on the dust box 17. In this state, the tension spring 35 installed in the cover retracting portion 17d of the dust box 17 is in an extended state, and the sliding opening / closing cover 530 is urged in the direction of arrow H.

  When the cleaning of the plate filter 5 is finished and the dust collection sheet 31 in the dust box 17 is discarded, the elastic hook portion 530a of the slide type opening / closing cover 530 is pushed by hand. The elastic hook 530a and the recess 17c of the dust box 17 are disengaged, and the tension of the tension spring 35 causes the sliding opening / closing cover 530 to move in the direction of arrow H to open the opening of the dust box 17, and the dust collecting sheet 31 is It can be taken out.

  After the dust collecting sheet 31 is replaced with a new one, the tip of the sliding opening / closing cover 530 is picked and pulled downward, the elastic hook portion 530a is engaged with the recess 17c of the dust box 17, and the sliding opening / closing cover 530 is closed. Hold on.

Embodiment 6 FIG.
FIG. 8: is principal part sectional drawing which shows Embodiment 6 of the indoor unit of the air conditioner concerning this invention. As shown in FIG. 8, in the air conditioner 600 of the sixth embodiment, when the length of the dust collection sheet 631 is longer than that of the dust collection sheet 31 of the first to fifth embodiments and laid in the dust box 17, The portion 631 c protrudes from the opening of the dust box 17. When the dust collection sheet 631 is discarded, the end 631c may be picked and pulled out from the dust box 17, so that the workability of discarding the dust collection sheet can be improved.

It is sectional drawing which shows Embodiment 1 of the indoor unit of the air conditioner concerning this invention. It is principal part sectional drawing which shows Embodiment 1 of the indoor unit of the air conditioner concerning this invention. It is principal part sectional drawing which shows the state which is scraping off the dust adhering to a plate-shaped filter. It is principal part sectional drawing which shows the state which takes out the dust collection sheet | seat laid in the dust box. It is principal part sectional drawing which shows Embodiment 3 of the indoor unit of the air conditioner concerning this invention. 6 is a plan view showing a dust collection sheet according to Embodiment 3. FIG. It is principal part sectional drawing which shows Embodiment 5 of the indoor unit of the air conditioner concerning this invention. It is principal part sectional drawing which shows Embodiment 6 of the indoor unit of the air conditioner concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Inlet 3 Outlet 4 Air passage 5 Plate filter 5a Rack 6 Blower fan 7 Heat exchanger 8 Top panel 10 Opening / closing panel 10a Spindle 11 Filter cleaning device 11a Drive part 12 Stripping part 17 Dust box 17a Holding part 17b Opening portion 17c Recessed portion 17d Cover retracting portion 19 Cleaning brush 20 Pinion 21 Shaft 22 Push spring 23 Support portion 24 Spear-shaped stripping member 25 Holding portion 26 Press member 27 Push spring 28 Guide member 29 Base member 30 Opening / closing cover 30a Support shaft 32 Dust 35 Pulling spring 31,331,631 Dust collection sheet 331a Edge 331b Dust receiving port 631c End 530 Sliding open / close cover 530a Elastic hook

Claims (13)

In an indoor unit of an air conditioner in which a plate filter for dust removal, a heat exchanger, and a blower fan are arranged in an air passage extending from an inlet to an outlet,
A drive unit for moving the plate filter parallel to the plate surface;
A cleaning brush that scrapes off dust adhering to the plate filter as the plate filter moves;
A stripping portion for scraping off dust adhered to the cleaning brush by scraping from the plate filter;
A dust box for storing dust that is peeled off from the cleaning brush;
A dust collecting sheet that is laid in the dust box and adheres the dropped dust;
An air conditioner indoor unit comprising:   The indoor unit of an air conditioner according to claim 1, wherein the driving unit includes a rack provided on the plate filter and a pinion that meshes with the rack and drives the rack.   The indoor unit of an air conditioner according to claim 2, further comprising a pressing portion that presses the plate filter so that the rack does not escape from the pinion when the pinion is driven.   The indoor unit of an air conditioner according to claim 1, further comprising a pressing portion that presses the plate filter so as to press the cleaning filter against the cleaning brush.   2. The air conditioner according to claim 1, wherein the cleaning brush is formed in a roller shape, rotates in accordance with the movement of the plate filter in contact with the plate filter, and scrapes off dust. Indoor unit.   The air conditioner according to claim 5, wherein the cleaning brush includes a brake mechanism, and rotates at a rotational speed slower than a moving speed of the plate filter by the operation of the brake mechanism to scrape dust. Indoor unit.   The air conditioner according to claim 1, wherein the stripping unit includes a bowl-shaped stripping member that contacts the cleaning brush, and a pressing spring that presses the stripping member against the cleaning brush. Indoor unit.   The indoor unit of an air conditioner according to claim 1, wherein the dust box includes an opening for attaching and detaching the dust collecting sheet and an opening / closing cover for opening and closing the opening.   The indoor unit of an air conditioner according to claim 8, wherein the opening / closing cover is a swinging or sliding opening / closing cover.   The indoor unit of an air conditioner according to claim 1, wherein the dust collecting sheet is a dust collecting sheet pack in which a plurality of dust collecting sheets are stacked.   The indoor unit of an air conditioner according to claim 1, wherein the dust collecting sheet is formed by bonding the dust collecting sheet in a bag shape to form a dust accommodating port.   The indoor unit of an air conditioner according to claim 1, wherein an adhesive for adhering dust is applied to the dust collection sheet.   The indoor unit of an air conditioner according to claim 1, wherein an end of the dust collecting sheet is laid out so as to protrude from an opening of the dust box.

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