WO2007145254A1

WO2007145254A1 - Indoor unit for air conditioner

Info

Publication number: WO2007145254A1
Application number: PCT/JP2007/061920
Authority: WO
Inventors: Koji Wada
Original assignee: Toshiba Carrier Corporation
Priority date: 2006-06-14
Filing date: 2007-06-13
Publication date: 2007-12-21
Also published as: JPWO2007145254A1

Abstract

An indoor unit for an air conditioner, having a front air filter (11A), an upper air filter (11B), a heat exchanger (10), and a fan (20) that are arranged along an air feeding path (28) formed in an indoor unit body (1); an air filter cleaning mechanism (A) for removing dust adhered to the air filters (11A, 11B) by moving while being in contact with the surfaces of the air filters (11A, 11B); and a fan cleaning mechanism (B) for removing dust adhered to a cross flow fan (21) while being in contact with it, the fan cleaning mechanism (B) performing dust removal while the cross flow fan (21) is rotated and while the mechanism passes the air filters (11A, 11B) and the heat exchanger (10). The air filter cleaning mechanism (A) and the fan cleaning mechanism (B) are in contact with the air filters (11A, 11B) and the cross flow fan (21), respectively, and automatically remove dust adhered to them.

Description

Specification

Air conditioner indoor unit

Technical field

The present invention relates to an indoor unit of an air conditioner having a cleaning function for an air filter and a blower fan and a function of discharging dust removed therefrom to the outside.

Background art

[0002] An indoor unit of an air conditioner that is commonly used is called a so-called wall-mounted type, and is attached to a height of a wall surface of a room. For this reason, for example, it is difficult for elderly people and women to attach and remove the air filter, and it is easy for dust to remain attached to the air filter. If left for a long period of time, the air filter will be clogged with dust, leading to a decrease in heat exchange efficiency.

[0003] Recently, an indoor unit for an air conditioner having a mechanism for automatically removing dust adhering to an air filter has been provided. However, the air filter cleaning mechanism contacts the surface of the air filter and removes the dust, so some dust falls on the back side of the air filter and adheres to the heat exchanger. Or, for example, powdery dust passes through the air filter and adheres to the heat exchanger.

In Japanese Patent Application Laid-Open No. 11-337105, a cleaning spray device is provided on the top of the heat exchanger, and the cleaning liquid and the rinsing liquid are sprayed to remove dust adhering to the fin surface. In addition, an air conditioner that has a movable drip-proof cover inside to prevent splashed water droplets from falling on other structures (blowers), collects the washed liquid in a dew tray, and discharges it outside the machine is disclosed. It has been.

Disclosure of the invention

By the way, in the air conditioner described above, the drip-proof cover operates at a timing immediately before spraying a liquid such as a cleaning liquid and covers the blower. In other words, water droplets are not applied to the blower during the liquid spray, but the fine water droplets that bounce off the drip-proof cover become mist and float in the indoor unit body.

[0006] In a general indoor unit, an electrical component box is juxtaposed on the side of the heat exchanger, Electric parts such as remote controls and electrical parts that control signals sent by remote control are housed. Since some of these electrical components generate a significant amount of heat, they are configured to take cooling air into the box, cool the electrical components, and take out the heated air. It has not been converted.

[0007] Therefore, some of the floating mist-like water droplets may enter the electrical component box, wet the electrical components, and cause a leakage accident. In addition, powdery dust passes through the heat exchanger and reaches the blower, and easily adheres to the fan due to the influence of static electricity generated as the fan rotates. Therefore, it is necessary to clean the fan, and the development of an effective cleaning mechanism that does not use cleaning liquid is desired.

[0008] The present invention has been made based on the above circumstances, and the object of the present invention is to contact the air filter and the blower fan respectively, and automatically remove the dust adhering to the air filter and the fan. The aim is to provide an air conditioner indoor unit that can reduce the amount of time required for cleaning and improve the cleanliness of the interior of the main unit.

[0009] In order to satisfy the above object, an indoor unit of an air conditioner of the present invention includes an indoor air inlet and a heat exchange air outlet in an indoor unit body, and the inlet and the outlet are in communication with each other. An air filter, a heat exchanger, and a blower are arranged along the air passage, and an air filter cleaning mechanism that removes dust adhering to the air filter while moving in contact with the surface of the air filter and a blower. A fan cleaning mechanism is provided for removing dust adhering to the fan through contact with the constituent fan and passing through the heat exchange with the air filter as the fan rotates.

Brief Description of Drawings

FIG. 1 is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a front perspective view of the interior of the main body of the indoor unit.

FIG. 3 is a schematic configuration diagram of a cross-flow fan incorporated in the indoor unit.

FIG. 4 is an explanatory diagram showing the flow of dust during operation of the air filter cleaning mechanism and the fan cleaning mechanism incorporated in the indoor unit.

[Fig. 5] Fig. 5 shows part of the air filter cleaning mechanism and the intake / exhaust mechanism built into the indoor unit. It is an external perspective view.

FIG. 6 is an enlarged perspective view of a part of the intake / exhaust mechanism incorporated in the indoor unit.

FIG. 7 is an exploded perspective view of components of the intake / exhaust mechanism according to the embodiment.

FIG. 8 is an operation explanatory diagram of the intake / exhaust mechanism according to the embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a schematic longitudinal sectional view of an indoor unit of an air conditioner, and FIG. 2 is a front perspective view showing the interior of the indoor unit body 1 with the front panel 2 removed.

[0012] The indoor unit main body 1 is composed of a front panel 2 and a rear panel housing 3, and has a horizontally long shape when viewed from the front. A front suction port 4 is opened in a part of the front side of the front panel 2, and a movable panel P supported by an opening / closing drive mechanism is fitted. When the operation is stopped and when the air filter cleaning mechanism A and the fan cleaning mechanism B, which will be described later, are activated, the movable panel P is flush with the front panel 2 and the front inlet 4 is closed. Also, during air conditioning operation, the movable panel P is projecting and displaced to the front, and is controlled to open the front inlet 4 by forming a gap with the body 1

An upper suction port 5 is provided across the upper portions of the front panel 2 and the rear panel housing 3. A frame-like crosspiece 6 is fitted in the upper suction port 5, and is divided into a plurality of spaces by this crosspiece 6. An air outlet 7 is opened at the lower part of the movable panel P, and an air outlet louver 8 is provided at the air outlet 7. The blowout louver 8 can open and close the blowout port 7 when the operation is stopped and when the air filter cleaning mechanism A and the fan cleaning mechanism B are operated, and can set the direction in which the heat exchange air is blown according to the air conditioning operation conditions.

[0014] In the indoor unit main body 1, a heat exchanger 10 formed in a substantially inverted V shape by a front heat exchange portion 10A and a rear heat exchange portion 10B is disposed. The front heat exchanger section 10A is formed in a substantially parallel curved shape with a gap with the front panel 2, and faces a part of the front suction port 4 and the upper suction port 5, and the rear heat exchange section 10B It is formed in a straight shape and faces the upper suction port 5 at an angle.

The lower end of the front heat exchanger section 10A is placed on the front drain pan 9a, and the lower end of the rear heat exchanger section 1OB is placed on the rear drain pan 9b, from the respective heat exchanger sections 10A and 10B. Receiving dripping water, it can be drained to the outside through a drain hose (not shown).

On the other hand, a front air filter 11A is attached between the front suction port 4 and the front heat exchange part 10A. An upper air filter 11B is attached between the upper suction port 6 and the front heat exchanger 10A— and the upper heat exchanger 10B. Both the front air filter 11A and the upper air filter 11B do not have to be configured so that the user can easily attach and detach them as in the conventional indoor unit.

[0016] That is, the front air filter 11A and the upper air filter 11B are automatically removed by the air filter cleaning mechanism A provided on the front surface side so as to capture and adhere! It has become. Therefore, the front air filter 11 A and the upper air filter 11B should be configured so that they can be removed as necessary, such as maintenance by professional workers.

[0017] The air filter cleaning mechanism A is supported by a pair of left and right main guides 12 provided at both ends in the longitudinal direction along both widthwise sides of the front air filter 11A and the upper air filter 11B. The part is supported by a pair of left and right sub guides 13 provided in the middle part of the front air filter 11A and the upper air filter 11B. In both the main guide 12 and the sub guide 13, a force at the lower end of the front air filter 11A (also the upper end of the air outlet 7) is also provided across the rear end of the upper air filter 11B.

[0018] The surface of the main guide 12 is provided with a so-called rack Xa, whereas the air filter cleaning mechanism A includes a pion gear that meshes with the rack Xa. Since one side portion of the air filter cleaning mechanism A is provided with a drive mechanism for driving the above-described pion gear, the air filter cleaning mechanism A is connected to the main guide 12 and the sub guide by rotating the pion gear. Can run along 13

[0019] The air filter cleaning mechanism A includes a horizontally long dust box 15 that extends over the left and right main guides, and is accommodated in one side of the dust box 15, and has an axial length over the entire length of the dust box 15. The roll brush 16, a dust receiving passage 17 formed on the other side of the dust box 15, and a brush drive mechanism for driving the roll brush 16 to rotate.

The above-mentioned roll brush 16 has a hair tip at the front air filter 11 A and the upper air filter 11 B. It is supported to contact. Therefore, when the roll brush 16 is driven to rotate, dust adhering to the front air filter 11A and the upper air filter 11B can be removed and taken into the dust box 15. The dust receiving passage 17 is formed at a position for receiving the dust removed by the roll brush 16.

[0020] As shown in Fig. 1 again, an indoor blower 20 is disposed between the front and rear heat exchanger sections 1OA and 10B of the heat exchanger 10 formed in the shape of an umbrella. The indoor blower 20 includes a fan motor and a fan 21 in which one support shaft is mechanically connected to the rotation shaft of the fan motor. The fan 21 is a cross-flow fan (cross-flow fan), and is subjected to an after-mentioned process.

As shown only in FIG. 2 (omitted in FIG. 1), an air cleaning unit C is attached to the front air filter 11A at the front surface of the front heat exchange section 10A of the heat exchange 10 described above. Being This air purification unit C cannot collect the front air filter 11A, collects fine dust, and also performs deodorization.

FIG. 3 is a schematic configuration diagram of the cross flow fan 21.

The cross-flow fan 21 includes a disk-shaped end plate 22 provided on both sides in the axial direction, and a plurality of disk-shaped intermediate partitions juxtaposed at a predetermined interval between the both end plates 22. The plate 23 includes a plurality of blades 24 that pass through the groove portions provided along the peripheral end portions of the both side end plates 22 and the intermediate partition plate 23 and are attached and fixed by means such as adhesion.

[0022] A hole 22a is provided in the shaft core portion of the right end plate 22 in the figure, and the rotation shaft of the fan motor is inserted and fixed therein. A support shaft 22b protrudes outward from the shaft core portion of the left end plate 22 in the figure, and this support shaft 22b is supported by a bearing portion provided on the side of the cross flow fan 21.

Further, the right end plate 22 in the figure has a plurality of arc-shaped long holes Xb between the hole 22a and the peripheral end, and the left end plate 22 has a support shaft 22b and a peripheral end. A plurality of holes Xc are provided between the two portions. The intermediate partition plate 23 is provided with a circular opening Xd at the shaft core portion excluding the attachment portion of the blade 24.

The cross-flow fan 21 can be driven to rotate to suck air from the circumferential direction and blow it out in the circumferential direction. On the other hand, arc-shaped long holes Xb provided in one end plate 22 The opening Xd provided in the intermediate partition plate 23 and the hole Xc provided in the other end plate 22 are in communication with each other. In other words, the dust collection opening 25 having the equal force of the hole Xb is formed inside the blade 24 constituting the cross flow fan 21.

As shown in FIGS. 1 and 2 again, the outer surfaces of the side walls of the front and rear drain pans 9a, 9b are provided at positions close to the indoor fan 20, and these constitute a nose for the cross-flow fan 21 of the indoor fan 20. ing. A partition wall member 26 connects the side wall portions of the front and rear drain pans 9a, 9b constituting the nose and each side portion of the outlet port 7. Spatial force surrounded by the partition wall member 26 becomes a blowout air passage 27 that communicates the nose and the air outlet 7.

That is, by rotating and driving the cross-flow fan 21 of the indoor blower 20, a blower passage 28 that connects the front suction port 4 and the upper suction port 5 and the blowout port 7 is formed. The part is the blowout air passage 27. The front air filter 11 A, the upper air filter 11 B, the heat exchanger 10, and the indoor blower 20 are sequentially arranged from the upstream side to the downstream side of the blower passage 28.

The fan cleaning mechanism B for cleaning the cross-flow fan 21 of the indoor blower 20 is provided in the vicinity of the nose component of the front drain pan 9a. The fan cleaning mechanism B includes a cleaning tool 30 such as a brush opposed to the entire length of the cross flow fan 21 in the axial direction, and an advance / retreat drive mechanism for moving the cleaning tool 30 forward and backward. With the cleaning tool 30 advanced and moved, the brush tip contacts the cross flow fan 21 and moves backward to set the brush tip away from the cross flow fan 21.

[0025] An electrical component box 29 is juxtaposed on one side of the heat exchanger 10. In this electrical component box 29, an assembly of semiconductor components and electrical components that control the indoor blower 20 and other electric components based on signals sent from the remote controller and various sensors. That is, the control unit S is accommodated. Some electrical components generate a significant amount of heat, so they are equipped with cooling openings that take in cooling air, cool the electrical components, and take out the heated air! / ! /

An intake / exhaust mechanism D, which will be described later, is provided on the side of the heat exchanger 10 opposite to the electrical component box 29. The intake / exhaust mechanism D is provided adjacent to the side of the cross-flow fan 21 constituting the indoor blower 20 and has an axial center on the extension of the axial center of the cross-flow fan 21. Next, the intake / exhaust mechanism D will be described in detail.

Fig. 4 is a diagram illustrating the operation of air filter cleaning mechanism A and fan cleaning mechanism B with respect to intake / exhaust mechanism D, Fig. 5 is a perspective view of intake / exhaust mechanism D and air filter cleaning mechanism A—, and Fig. 6 is an intake / exhaust mechanism. FIG. 7 is an exploded perspective view of a part of D, FIG. 7 is an exploded perspective view of the intake / exhaust mechanism D, and FIG.

The intake / exhaust mechanism D has a function of discharging dust removed by the air filter cleaning mechanism A and the fan cleaning mechanism B to the outside of the room. More specifically, as shown in FIG. 4, between the air filter cleaning mechanism A and the intake / exhaust mechanism D, an air filter guide path 32 for interposing the removed dust is interposed, and the fan cleaning is performed. Between the mechanism B and the intake / exhaust mechanism D, a fan guide path 33 for guiding the removed dust is formed.

Further, the air filter guide path 32 and the fan guide path 33 are provided with opening and closing mechanisms 34 and 35 that open and close in reverse. That is, when the open / close mechanism 34 opens the air filter guide path 32, the fan guide path 33 closes the open / close mechanism 35, and when the open / close mechanism 35 opens the fan guide path 33, the air filter guide path 33 opens. Acts so that the opening / closing mechanism 34 is closed.

[0028] The air filter guide path 32 is connected to a part of the peripheral surface of the fan casing 36 constituting the intake / exhaust mechanism D. The fan guide path 33 is opposed to the dust introduction port 37 formed in the intake / exhaust mechanism D, and the dust introduction port 37 is located to face the bearing portion of the cross-flow fan 21.

Therefore, the air filter guide path 32 and the fan guide path 33 are joined by the intake / exhaust mechanism D. Therefore, the air filter cleaning mechanism A and the fan cleaning mechanism B can be handled by a single intake / exhaust mechanism D, and the compactness of the indoor unit body 1 and the maintenance can be simplified by sharing parts.

The intake / exhaust mechanism D includes a ventilation fan 38 having a multiblade fan power in a fan casing 36. The axial centers of the ventilation fan 38 and the cross flow fan 21 are on the same axis L, and the dust introduction port 37 is formed between them.

The fan cleaning mechanism B and the intake / exhaust mechanism D are also controlled so as to interlock with each other. For example, the intake / exhaust mechanism D starts operating in synchronization with the start of the fan cleaning mechanism B operation. Even if the fan cleaning mechanism B starts to operate and the specified time has elapsed, the intake / exhaust mechanism D can be operated or the intake / exhaust mechanism D starts to operate and the fan is cleaned after the specified time has elapsed. Actuate mechanism B.

[0030] Further, an exhaust duct 39 is connected to the fan casing 36, and the exhaust duct 39 extends through the wall K of the house and has an open end extending outside.

As shown in FIG. 5, only one end of the dust box 15 constituting the air filter cleaning mechanism A is opened and covered with the discharge box 40. The discharge box 40 and the fan casing 36 of the intake / exhaust mechanism D are communicated with each other by a connection hose 41, and the connection hose 41 forms a part of the air filter guide path 32.

The connecting hose 41 is curved so as to form a gentle curve as a whole, so that dust passing through the inside is not clogged. The air filter cleaning mechanism A has a sufficient length that is not affected by the movement and displacement position of the dust box 15 when the air filter cleaning mechanism A is in operation.

[0031] The fan casing 36 constituting the intake / exhaust mechanism D is formed in a scroll shape, and is provided with a dust guide case 42 provided with a mouth body to which the connection hose 41 is connected at a part of its peripheral surface. Accordingly, the air filter guide path 32 is formed by the dust guide case 42 and the connection hose 41.

As shown in FIG. 6, a part of the dust guide case 42 protrudes as a damper case 43, and a wind damper that is the opening / closing mechanism 34 of the air filter guide path 32 is provided in the damper case 43.

[0032] The wind damper 34 is composed of a plate piece bent in a substantially U shape in a side view, and the damper case 43 is formed so as to protrude to match the shape of the wind damper 34. One end of the wind damper 34 is rotatably supported by a dust guiding case 42 via a support shaft, and the other end of the wind damper 34 hangs down due to gravity to block the inside of the dust guiding case 42.

When wind pressure (negative pressure) higher than a predetermined pressure is applied to the connection hose 41, the free end of the wind damper 34 is pushed upward by the wind pressure, and the air filter guide path 32 is opened. If the wind pressure exceeding the predetermined pressure disappears from this state, or if a positive pressure is applied, the wind damper 34 shuts off the air filter internal channel 32. As shown in FIGS. 7 and 8, the intake / exhaust mechanism D is provided with a unit base 45 on one side and a blower mechanism 50 having the fan casing 36 on the other side. Between the unit base 45 and the blower mechanism 50, a ventilation damper and a damper drive mechanism 55 which are opening / closing mechanisms 35 of the fan guide path 33 are interposed. (Here, the dust guide case 42 is omitted here.)

The upper part of the unit base 45 matches the combined shape of the front heat exchange part 10A and the rear heat exchanger part 10B constituting the heat exchange 10, and the side end part of the heat exchanger 10 is mounted. A mounting opening 46 is provided at a substantially central portion of the unit base 45 so that a rib Xf projects from the periphery. A plurality of full-closing pieces 47 are provided along a substantially half circumference of the mounting opening 46 with a predetermined interval therebetween, and a secondary ventilation port 4 is provided between some of the full-closing pieces 47. 8 is opened.

A bearing tool 49 is fitted and fixed to the mounting opening 46, and supports a support shaft 22 b of a cross flow fan 21 that constitutes the indoor blower 20. A small gear 56 constituting the damper drive mechanism 55 is rotatably fitted to the two stays Xg protruding from the inner surface side. A mounting screw 51 for mounting and fixing the blower mechanism 50 is screwed into the end surface screw hole of the other stay Xh.

The unit base 45 is provided with a driving motor 57 that constitutes the damper driving mechanism 55, and is provided with a receiving portion 59 that rotatably supports a driving gear 58 that is connected to the rotating shaft of the driving motor 57. .

[0035] A hole 60 provided in the central portion of the ventilation damper 35 is rotatably fitted into a rib Xf formed along the peripheral surface of the mounting opening 46. The ventilation damper 35 is formed in a substantially dish-shaped cross section along the radial direction of the hole 60, and a gear portion G is provided along a circular outer peripheral edge. In this gear portion G, two small gears 56 and a driving gear 58 constituting the damper drive mechanism 55 are combined.

Between the hole portion 60 and the outer peripheral gear portion G in the ventilation damper 35, a plurality of guide ventilation ports 62 are provided in a part in the circumferential direction. These guide vents 62 have the same opening dimensions and shape as the above-mentioned secondary vent 48 of the unit base 45, and the guide vent 62 is the same as the above-mentioned fully closed piece 47 mutual spacing. Is set to

[0036] The ventilation damper 35 is fitted in the rib Xf, and the unit base 45 is spaced from the inner surface. And one side of the ventilation damper 35 is always in sliding contact with the edge of the fully closed piece 47. Therefore, the ventilation vents 35 are closed by the ventilation dampers 35 except for the state where the guide vents 62 of the ventilation dampers 35 are opposed to the secondary vents 48.

The air blowing mechanism 50 includes an air inlet 63 that opens to the side surface on the ventilation damper 35 side, the fan casing 36 that has an exhaust port body 64 projecting from the peripheral end thereof, and the air inlet 63 of the fan casing 36. The fan motor 65 is mounted on the opposite surface, and the ventilation fan 38 is mounted on the rotation shaft of the fan motor 65.

[0037] The ventilation fan 38 is a so-called centrifugal fan type (multi-blade type) that sucks air in the axial direction as it rotates and sends it in the circumferential direction. Actually, air is sucked from the air inlet 63 of the fan casing 36 and blown to the air outlet 64. The exhaust duct 64 is connected to the exhaust duct 39 previously shown in FIG. 4, and the exhaust duct 39 extends through the wall K to the outside as described above.

When the remote control operation switch is turned on, the movable panel P opens the front suction port 4 according to the specifications of the cooling operation and the heating operation. Then, the blowout louver 8 provided in the blowout port 7 rotates to set the wind direction posture. At the same time, while the indoor blower 20 performs a blowing action, the compressor of the outdoor unit is driven and the refrigeration cycle operation is started.

The room air is guided from the front suction port 4 and the upper suction port 5 along the air passage 28 formed in the indoor unit body 1. That is, room air passes through the front air filter 11A and the upper air filter 11B, and dust contained in the room air is captured. Furthermore, the indoor air that has been cleaned through the air cleaning unit C is guided to the heat exchanger 10 for heat exchange. This heat exchange air is guided from the blow-out air passage 27 to the blow-out port 7, guided by the blow-out louver 8, and blown into the room, and the efficient air-conditioning operation is continued.

If the air-conditioning operation is continued for a long period of time, the dust trapped in the indoor air force inevitably accumulates on the upper air filters 11A and 11B, and the dust that has passed through the air filters 11A and 11B and the heat exchanger 10 It adheres to the cross-flow fan 21 constituting the indoor blower 20 due to the influence of static electricity.

Therefore, the control unit S performs the air conditioning operation accumulated time every time the air conditioning operation ends. After the elapse of time, an operation start signal is sent to the air filter cleaning mechanism A and the fan cleaning mechanism B. Alternatively, it may be set such that an operation start signal can be sent from the control unit S to each of the cleaning mechanisms A and B by arbitrarily pressing the cleaning switch on the remote controller.

The control unit S sends a signal to the drive mechanism of the movable panel P to close the front suction port 4 and sends a signal to the drive mechanism of the blowout louver 8 to close the blowout port 7. In other words, the indoor unit body 1 is preliminarily sealed to prevent the collected dust from leaking as much as possible. An operation start signal is sent to the air filter cleaning mechanism A at the timing after completion of the closing.

The dust box 15 that forms the air filter cleaning mechanism A is not only when the operation is stopped but also during the air conditioning operation, as shown in Fig. 1. The front panel 2 between the front suction port 4 upper end and the upper suction port 5 front end 2 Because it is in a position facing the part, it must be an obstacle to the flow of room air that is sucked into the main body 1 from the front suction port 4 and the upper suction port 5 especially during air conditioning operation!

[0040] When an operation start signal is sent to the air filter cleaning mechanism A, the pion gear is driven, and the dust box 15 is guided by the main guide 12 and the sub guide 13 and moves along the front side of the front air filter 11A. To do. At the same time, the brush drive mechanism rotationally drives the roll brush 16 in the dust box 15, and the hair tip contacts the front air filter 11A. Dust adhering to the front air filter 11 A is scraped off by the roll brush 16 and is received in the dust receiving passage 17 in the dust box 15.

[0041] When the dust box 15 moves from the upper end to the lower end of the front air filter 11A in this way, this time, the dust box 15 moves toward the upper end of the lower end force, and dust remaining on the front air filter 11A is removed. Remove. After that, the dust box 15 moves to adhere to the front end force of the upper air filter 11B over the rear end, removes the dust, returns to the front end position of the upper air filter 11B again, removes the dust, and then cleaned. Stop working.

[0042] Both the front air filter 11A and the upper air filter 11B are dust-removed twice, and the cleaning effect is perfect. Since dust removed from each air filter 11A, 11B is collected in the dust receiving passage 17 of the dust box 15, the control unit S sends a work end signal to the air filter cleaning mechanism A and then operates to the intake / exhaust mechanism D. A signal is sent and the collected dust is discharged outdoors. The intake / exhaust mechanism D can be switched between three modes: “secondary air ventilation mode”, “primary air ventilation mode”, and “damper fully closed mode”. Here, the names of the secondary side and the primary side are based on the above heat exchange, and the secondary side air means the air after passing through the heat exchanger 10, and the primary side air flows in the heat exchange. Say the air before.

The control unit S selects the “damper fully closed mode” when the intake / exhaust mechanism D is operated.

The ventilation damper 35 is rotated, and the guide ventilation port 62 is surrounded by the full-closing piece 47 of the unit base 45 and the rib Xf to be in a completely closed state. Further, the secondary ventilation port 48 of the unit base 45 is completely closed by the ventilation damper 35 surface, and the intake port 63 of the fan casing 36 is closed. That is, the ventilation damper 35 serving as an opening / closing mechanism closes the dust introduction port 37, and thus the fan guide path 33 is closed.

Next, when the ventilation mechanism 50 is actuated to rotate the ventilation fan 38, the inside of the fan casing 36 is in a negative pressure state. As a result, the inside of the damper case 43 is also in a negative pressure state, and the wind damper 34 as an opening / closing mechanism opens the air filter guide path 32. Negative pressure is also applied to the dust receiving passage 17 in the dust box 15 through the air filter guide path 32, and the collected dust is guided from the air filter guide path 32 into the fan casing 36. Further, it is discharged to the outside through the exhaust duct 39.

[0045] When the ventilation damper 35 closes the fan guide path 33 in this way, the wind damper 34 opens the air filter guide path 32.

After the dust collected by the air filter cleaning mechanism A is discharged to the outside, the control unit S sends a work start signal to the fan cleaning mechanism B, and the intake / exhaust mechanism D is connected to the `` secondary air ventilation mode ''. Send a switching signal. The forward / backward drive mechanism that constitutes the fan cleaning mechanism B moves the cleaning tool 30 forward to bring the brush tip into contact with the cross-flow fan 21.

In addition, the control unit S operates the cross flow fan 21 at a low speed. That is, the cross-flow fan 21 is driven to rotate forward during the air conditioning operation, and the cross-flow fan 21 is driven to rotate reversely during the operation of the fan cleaning mechanism B, or the forward rotation drive and the reverse rotation drive are repeated.

As shown in FIG. 8, the hair tips of the brush cleaning tool 30 come into sliding contact with the rotation of the cross flow fan 21, and dust adhering to the cross flow fan 21 is removed. At the same time, in intake and exhaust mechanism D The damper drive mechanism 55 is actuated to rotate the ventilation damper 35, so that the guide ventilation opening 62 of the ventilation damper 35 and the secondary ventilation opening 48 of the unit base 45 face each other.

That is, the dust introduction port 37 of the intake / exhaust mechanism D is opened, and the fan is a gap between the dust introduction port 37 and the dust collection opening 25 of the cross flow fan 21 and the force unit base 45 and the end plate 22 of the cross flow fan 21. They will face each other via the guideway 33.

The indoor air is sucked into the indoor unit main body 1 from the upper suction port 5 that is always open due to the low-speed rotation of the cross-flow fan 21, and circulates heat. The secondary air flowing out of the heat exchange is sucked into the intake / exhaust mechanism D through the secondary ventilation port 48, the guide ventilation port 62, and the intake port 63 by the operation of the ventilation fan 38.

At the same time, negative pressure is applied from the dust inlet 37 to the dust collection opening 25 of the cross flow fan 21 through the fan guide path 33. Dust spilled from the crossflow fan 21 is guided to the fan guide path 33 from the dust collection opening 25, and merged with the secondary air at the dust introduction port 37 and introduced into the intake / exhaust mechanism D. . Then, dust together with the secondary side air is discharged to the outside through the exhaust duct 39.

When the ventilation damper 35 opens the fan guide path 33 in this manner, the wind damper 34 closes the air filter guide path 32.

The fan guide path 33 is formed by a gap between the end of the cross-flow fan 21 and the unit base 45, and there is no connection hose 41 like the air filter guide path 32, but the distance is short and dust Since the negative pressure with respect to the collection opening 25 is large, dust is discharged without difficulty.

[0048] The intake / exhaust mechanism D can also select the "primary air ventilation mode". At this time, the position of the ventilation vent 62 of the ventilation damper 35 is shifted from the position of the secondary ventilation vent 48 of the unit base 45, and the damper 35 surface is aligned with the edge of the fully closed piece 47 of the unit base 45. Make contact, and close the secondary ventilation port 48 with the ventilation damper 35. Accordingly, a gap is formed between the circumferential surface of the blower mechanism 50 and the inner surface of the unit base 45, and the guide ventilation port 62 communicates with the gap to guide the primary air.

However, since the secondary ventilation port 48 constituting the dust introduction port 37 is closed, a negative pressure is applied to the dust collection opening 25 of the cross flow fan 21 even if the ventilation fan 38 is driven. Difficult to apply Air intake / exhaust mechanism D is less likely to be sucked into D. Therefore, when the intake / exhaust mechanism D selects “primary air ventilation mode”, the fan cleaning mechanism B is not linked.

In the “secondary air ventilation mode” and “primary air ventilation mode”, since the blowing pressure is applied to the damper case 43 from the fan casing 36 constituting the blowing mechanism 50, the damper case 43 is provided. The wind damper 34 prevents the flow of airflow to the connecting hose 41 side. Therefore, there is no backflow of airflow from the connection hose 41 to the dust box 15.

[0050] As described above, according to the present invention, the front air filters 11A and 11B and the cross-flow fan 21 of the indoor fan 20 are in contact with the front air filters 11A and 11B, respectively, and dust attached thereto is automatically removed. There is no need to use a cleaning solution. The amount of time required for cleaning the air filters 11 A and 11 B and the fan 21 can be reduced, and the cleanliness inside the indoor unit body 1 can be improved.

[0051] The present invention is not limited to the above-described embodiments as they are, but can be specifically modified by modifying constituent elements without departing from the scope of the invention. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments described above.

Industrial applicability

[0052] According to the present invention, it is possible to reduce the time required for cleaning the air filter and the fan of the indoor unit of the air conditioner, and it is possible to improve the cleanliness inside the main body.

Claims

The scope of the claims

[1] An indoor unit body provided with an indoor air inlet and a heat exchange air outlet;

An air passage formed in the indoor unit main body and communicating with the suction port and the air outlet, an air filter, a heat exchanger and a blower arranged along the air passage, and a surface of the air filter. However, an air filter cleaning mechanism that removes dust adhering to the air filter,

A fan cleaning mechanism that contacts a fan constituting the blower and passes through the heat exchange with the air filter and removes dust adhering to the fan as the fan rotates. The indoor unit of the harmony machine.

[2] The air conditioner according to claim 1, wherein the indoor unit main body includes an intake / exhaust mechanism for discharging dust removed by the air filter cleaning mechanism and the fan cleaning mechanism to the outside of the room. Indoor unit.

[3] An air filter guide path is interposed between the air filter cleaning mechanism and the intake / exhaust mechanism,

3. The air conditioner according to claim 2, wherein the fan cleaning mechanism and the intake / exhaust mechanism are communicated with each other by a fan guide path, and the air filter guide path and the fan guide path merge in the intake / exhaust mechanism. Indoor unit.

[4] The air filter guide path and the fan guide path include an opening / closing mechanism that opens and closes in reverse directions,

4. The indoor unit of an air conditioner according to claim 3, wherein the intake / exhaust mechanism includes one ventilation fan.

[5] The fan cleaning mechanism is a cleaning tool such as a brush whose tip is in contact with the fan, and the fan cleaning mechanism and the intake / exhaust mechanism act in conjunction with each other. Air conditioner indoor unit.

[6] The fan includes both side end plates and intermediate partition plates having a disk force provided at predetermined intervals in the axial direction, and a plurality of fans installed between the both side end plates and the intermediate partition plates. It is a cross-flow fan (cross flow fan) that has a blade power

Dust removed by the fan cleaning mechanism on the shaft cores of the side end plates and the intermediate partition plate 2. The indoor unit of an air conditioner according to claim 1, further comprising a dust collection opening for guiding dust.

7. The indoor unit of an air conditioner according to claim 6, wherein the intake / exhaust mechanism includes a dust inlet facing the side end surface of the fan.

[8] The suction port includes a movable panel that opens the suction port during air-conditioning operation and closes the suction port during operation of the air filter cleaning mechanism and the fan cleaning mechanism.

The air outlet is provided with an air outlet louver that sets the air exchange direction during air-conditioning operation, and closes the air outlet when the air filter cleaning mechanism and the fan cleaning mechanism are in operation. Item 1. An air conditioner indoor unit according to item 1.

[9] The indoor unit main body has a control unit that controls the fan to rotate forward during the air-conditioning operation and to rotate the fan reversely or repeat the forward rotation and reverse rotation during the operation of the fan cleaning mechanism. The indoor unit for an air conditioner according to claim 1, further comprising:

[10] The indoor unit main body includes a control unit that controls the air filter cleaning mechanism and the fan cleaning mechanism to operate each time the air conditioning operation ends or when the accumulated air conditioning operation time reaches a predetermined time. The indoor unit of an air conditioner according to claim 1, wherein

[11] The air conditioner according to claim 1, wherein the indoor unit main body includes a control unit that optionally controls the air filter cleaning mechanism and the fan cleaning mechanism to operate after completion of the air conditioning operation. Indoor unit of the machine.

[12] An indoor unit body provided with an indoor air inlet and a heat exchange air outlet,

It is formed in the indoor unit main body, and is attached to an air passage that communicates the suction port and the air outlet, an air filter, a heat exchanger, and a fan arranged along the air passage, and a fan that constitutes the fan. An air conditioner indoor unit comprising: a fan cleaning mechanism that removes dust; and an intake / exhaust mechanism that sucks and discharges dust removed by the fan cleaning mechanism.

[13] An indoor unit body provided with an indoor air inlet and a heat exchange air outlet,

A blower passage formed in the main body of the indoor unit that communicates the suction port and the blower outlet, an air filter disposed along the blower passage, a heat exchange fan, a crossflow fan, and a crossflow fan in contact with the crossflow fan. Dust adhering to the fan is removed as the cross-flow fan rotates. A fan cleaning mechanism to be removed,

A dust inlet that is adjacent to the side of the cross-flow fan and communicates with the fan cleaning mechanism is formed facing the side surface of the cross-flow fan, and the dust removed by the fan cleaning mechanism is sucked together with air. Intake and exhaust mechanism

An air conditioner indoor unit comprising:

[14] The fan cleaning mechanism is a cleaning tool such as a brush whose tip is in contact with the fan,

14. The indoor unit of an air conditioner according to claim 12, wherein the fan cleaning mechanism and the intake / exhaust mechanism act in conjunction with each other.

[15] The cross-flow fan includes a plurality of side end plates and intermediate partition plates each having a disk force provided at predetermined intervals in the axial direction, and a plurality of bridges extending between the both side end plates and the intermediate partition plates. With one blade,

14. The air according to claim 13, wherein the fan cleaning mechanism is provided with dust collection openings for guiding dust that has been blown off, on both side end plates of the cross-flow fan and the shaft core of the intermediate partition plate. The indoor unit of the harmony machine.