KR20090085657A - Air conditioner - Google Patents

Abstract

An air conditioner is provided which can prevent air from flowing out through the filter by the filter cleaning operation. The air conditioner includes a temperature adjusting unit 22, a humidity control unit 4, a filter, a filter cleaning unit 79, and a control unit 80. The temperature adjusting unit 22 allows the air in the room to be blown into the room after the temperature is adjusted. The humidity control unit 4 receives outdoor air and blows it into the room. The filter removes dust from the air taken in from indoors and outdoors. The filter cleaning unit 79 moves the filter to clean the dust attached to the filter. The control unit 80 does not execute the filter cleaning operation by the filter cleaning unit 79 during the execution of the temperature adjustment operation by the temperature adjusting unit 22 and during the ventilation operation by the humidity control unit 4.

Description

Air Conditioner {AIR CONDITIONER}

The present invention relates to an air conditioner, particularly an air conditioner having a filter cleaning operation function.

The air conditioner is usually equipped with a filter for removing dust from the air taken in from the room. However, if the dust adheres to and is deposited on the filter, the ventilation resistance increases. For this reason, various air conditioners provided with the automatic cleaning function of the filter have been proposed. One of them is a method of cleaning the dust attached to the filter by moving the filter (see Patent Document 1).

[Patent Document 1] Japanese Unexamined Patent Publication No. 2006-194562

In the above-described system, since the filter moves from its original position during the filter cleaning operation, if the temperature adjustment operation is performed in this state, the air received from the room may flow without passing through the filter. In this case, dust may adhere to the heat exchanger or the like, causing the heat exchanger or the like to become dirty. For this reason, it is preferable not to perform filter cleaning operation during temperature adjustment operation.

On the other hand, an air conditioner has a ventilation part which performs the ventilation operation which receives outdoor air and blows it into the room other than the temperature control part which performs temperature adjustment operation. In such an air conditioner, dust is removed by passing through the filter the air received from the outside by the ventilator.

However, in such an air conditioner, even if the filter cleaning operation is not performed during the temperature adjustment operation, the filter cleaning operation is performed during the ventilation operation, and the air received from the outside may flow without passing through the filter.

An object of the present invention is to provide an air conditioner that can prevent air from flowing out through a filter by a filter cleaning operation.

The air conditioner which concerns on 1st invention is equipped with a temperature control part, a ventilation part, a filter, a filter cleaning part, and a control part. The temperature adjusting section allows air in the room to be blown into the room after temperature adjustment. The ventilator allows outdoor air to be blown into the room. The filter removes dust from the air received from indoors and outdoors. The filter cleaning unit moves the filter to clean the dust attached to the filter. The control unit does not execute the filter cleaning operation by the filter cleaning unit during the temperature adjustment operation by the temperature adjusting unit and during the ventilation operation by the ventilation unit.

In this air conditioner, the filter cleaning operation by the filter cleaning part is prohibited not only during the temperature adjustment operation by the temperature adjusting part but also during the ventilation operation by the ventilation part. For this reason, it is possible to prevent the air from flowing out without passing through the filter not only during the temperature adjustment operation but also during the ventilation operation.

The air conditioner according to the second invention is the air conditioner of the first invention, and the control unit performs the ventilation operation when the predetermined filter cleaning operation start condition is satisfied during the stop of the temperature adjustment operation and during the execution of the ventilation operation. After stopping, the filter cleaning operation is started, and the ventilation operation is resumed after the filter cleaning operation is completed.

In the air conditioner, when the predetermined filter cleaning operation start condition is satisfied during the execution of the ventilation operation, the ventilation operation is stopped once to perform the filter cleaning operation, and the ventilation operation is resumed after the filter cleaning operation is completed. For this reason, the filter cleaning operation can be performed even when the ventilation operation is continuously performed like the regular ventilation operation.

The air conditioner which concerns on 3rd invention is the air conditioner of 2nd invention, Comprising: While the ventilation operation is stopped for filter cleaning operation, it further includes the display part which displays that the ventilation operation is being stopped.

In this air conditioner, the display unit displays that the ventilation operation is stopped. For this reason, the user can easily grasp that the ventilation operation is stopped.

The air conditioner which concerns on 4th invention is an air conditioner in any one of 1st invention-3rd invention, A temperature adjusting part is the 1st which produces | generates the flow of the air blown in to a room after being received from the room and temperature-controlled. Have a blower The ventilator also has a second blower that generates a flow of air that is received from the outside and blown into the room. The control unit does not execute the filter cleaning operation by the filter cleaning unit during the driving of the first blower and the driving of the second blower.

In this air conditioner, the filter cleaning operation is prohibited during the driving of the first blower and the driving of the second blower. For this reason, it is possible to prevent the air from flowing out without passing through the filter not only during the temperature adjustment operation but also during the ventilation operation.

Effect of the Invention

In the air conditioner which concerns on 1st invention, the filter cleaning operation by a filter cleaning part is prohibited not only during the temperature adjustment operation by a temperature adjusting part but also during execution of the ventilation operation by a ventilation part. For this reason, it is possible to prevent the air from flowing out without passing through the filter not only during the temperature adjustment operation but also during the ventilation operation.

In the air conditioner which concerns on 2nd invention, when predetermined filter cleaning operation start condition is satisfied during execution of a ventilation operation, ventilation operation is stopped once, filter cleaning operation is performed, and ventilation operation after completion of a filter cleaning operation is performed. Resume For this reason, the filter cleaning operation can be performed even when the ventilation operation is continuously performed like the regular ventilation operation.

In the air conditioner which concerns on 3rd invention, the display part displays that the ventilation operation is stopped. For this reason, the user can easily grasp that the ventilation operation is stopped.

In the air conditioner which concerns on 4th invention, filter cleaning operation | movement is prohibited during the drive of a 1st blower, and the drive of a 2nd blower. For this reason, it is possible to prevent the air from flowing out without passing through the filter not only during the temperature adjustment operation but also during the ventilation operation.

1 is an external view of an air conditioner.

2 is an exploded perspective view of the outdoor unit.

3 is a refrigerant circuit diagram of an air conditioner.

4 is an exploded perspective view of the indoor unit;

5 is a side cross-sectional view of the indoor unit.

6 is a block diagram showing a configuration of an air conditioner.

7 is a diagram illustrating a state of a filter during the filter cleaning operation.

8 is a flowchart for determining filter cleaning operation execution.

<Description of the symbols for the main parts of the drawings>

1: air conditioner 4: humidity control unit (ventilation unit)

16: 1st blowing device 22: temperature adjusting part

21: filter 54: second blower

77: display portion 79: filter cleaning portion

80: control unit

<Configuration>

[Schematic structure of air conditioner]

The external appearance of the air conditioner 1 which concerns on 1st Example of this invention is shown in FIG.

This air conditioner 1 is comprised by the indoor unit 2 installed indoors and the outdoor unit 3 installed outdoor, and can cool and heat indoors.

In addition, the outdoor unit 3 has an outdoor air conditioning unit 5 and a humidity control unit 4 mounted on the outdoor air conditioning unit 5. As will be described later, the humidity control unit 4 can supply the outdoor air to the room or discharge the indoor air to the outside, and the humidity control unit 4 is provided between the outdoor unit 3 and the indoor unit 2. The supply / exhaust hose 6 used when supplying outdoor air, humidified air, etc. from the side) to the indoor unit 2, or when discharging indoor air to the outside is provided.

(Humidification unit 4)

The humidity control unit 4 can perform an exhaust operation for discharging the air received from the interior to the outside and an air supply operation for supplying the air received from the outdoor to the interior. In addition, the air supply operation includes a humidification operation in which air received from the outside is humidified and supplied to the room, and an air supply ventilation operation in which air received from the outside is supplied to the room without being humidified. That is, the humidity control unit 4 can function as a ventilation unit which receives outdoor air and blows it into the room. As shown in FIG. 2 and FIG. 3, the humidity control unit 4 includes a humidity control unit casing 7, a moisture absorbing and humidifying member 51, a heating device 52, a switching damper 53, and a second blowing air. The apparatus 54, the adsorption blower 55, etc. are provided. In addition, FIG. 2 is an exploded perspective view of the outdoor unit 3, and FIG. 3 is a schematic diagram of a refrigerant circuit provided in the air conditioner 1, and shows an air passage through which air supplied to the room and air discharged to the outside pass. It was typically added.

<Humidification unit casing (7)>

The humidity control unit casing 7 accommodates a moisture absorption member 51, a heating device 52, a second blower 54, a switching damper 53, a suction blower 55, and the like.

On the front surface of the humidity control unit casing 7, an adsorption air outlet 7a consisting of a plurality of slit-shaped openings is provided. A suction air suction port 7b and a supply / exhaust mechanism 7c are provided on the rear surface of the humidity control unit casing 7. The adsorption air suction port 7b is an opening through which air taken in from outside is allowed to adsorb moisture to the moisture absorption member 51. The air supply / exhaust mechanism 7c passes air received into the humidity control unit 4 from the outside in order to be sent to the indoor unit 2 during the air supply operation, and is received from the indoor unit 2 during the exhaust operation, and controls the humidity control unit 4. It is an opening through which the air exhausted to the outside from the air passes. In addition, the upper part of the humidity control unit casing 7 is covered by the top plate 56.

<Humidification humidification member 51>

The hygroscopic member 51 is a ceramic rotor having a honeycomb structure, and generally has a disc-shaped outer shape. The moisture absorption member 51 is rotatably provided, and is rotationally driven by the rotor drive motor 57 (see FIG. 6). The hygroscopic member 51 is supported with an adsorbent such as zeolite, silica gel, or alumina. Adsorbents such as zeolites have the property of being able to adsorb moisture in the air to be contacted with and desorbing moisture by heating.

<Heating device 52>

The heating apparatus 52 is located above the moisture absorption member 51, and is arrange | positioned facing the moisture absorption member 51. As shown in FIG. The heating device 52 can heat the moisture absorption member 51 by heating the air sent to the moisture absorption member 51.

<The second blowing device 54>

The second blower device 54 is disposed on the side of the humidification member 51 and has a radial fan assembly that generates a flow of air that is received from the outside and sent to the indoor unit 2. to be. The second blower 54 generates a flow of air from the supply / exhaust mechanism 7c to the room via the suction / humidification member 51 and the switching damper 53, and converts the air received from the outside into the indoor unit 2. send. Moreover, the 2nd air blower 54 can also discharge the air which received from the indoor unit 2 to the outdoors. The second blower 54 switches these operations by switching the switching damper 53. As shown in FIG. 3, when the second blower device 54 sends air received from the outside to the indoor unit 2, the second blower device 54 passes through a portion of the moisture absorption member 51 that faces the heating device 52. One air is sent to the supply / exhaust duct 58 via the switching damper 53. The air supply / exhaust duct 58 is connected to the air supply / exhaust hose 6, and the second air blower 54 supplies air to the indoor unit 2 through the air supply / exhaust duct 58 and the air supply / exhaust hose 6. Supply (see solid arrow A1). In addition, the air sent to the indoor unit 2 through the supply / exhaust hose 6 is blown to the upstream side of the filter 21 described later in the interior of the indoor unit 2. Moreover, when the 2nd air blower 54 discharges the indoor air received from the indoor unit 2 to the outdoors, the 2nd blower 54 supplies the air sent from the supply-exhaust duct 58 via the supply-exhaust hose 6, Discharge to outside from 7c (see dashed arrow A2).

<Change damper (53)>

The switching damper 53 is a rotary air flow path switching means disposed below the second blower 54. The switching damper 53 is switched to the first switching state, the second switching state and the third switching state.

In the first switching state, the air blown out from the second blower device 54 is supplied to the indoor unit 2 via the air supply and exhaust hose 6 through the air supply and exhaust duct 58. Thereby, in a 1st switching state, air flows in the direction of the arrow shown by the solid line arrow A1 of FIG. 3, and outdoor air is humidified or it is not humidified and is supplied to the indoor unit 2 through the supply-exhaust hose 6 do.

In the second switching state, air flows in the direction of the arrow shown by broken-line arrow A2 in FIG. 3, and the air blown from the indoor unit 2 through the supply / exhaust hose 6 and the supply / exhaust duct 58 is blown by the second blower. Exhaust is exhausted from the device 54 via the supply / exhaust mechanism 7c.

In the third switching state, the path connecting the switching damper 53 and the supply / exhaust duct 58 is closed to block the flow of air between the indoor unit 2 and the indoor unit 2.

<Blowing device 55 for adsorption>

The adsorption blower 55 has the adsorption fan motor 59 and the adsorption fan 61 rotationally driven by the adsorption fan motor 59, The heating apparatus 52 of the moisture absorption member 51. As shown in FIG. Create a stream of air (see solid arrow A3) through the part that is not opposed to That is, the suction blower 55 is sucked from the suction air suction port 7b, passes through a portion of the suction / humidification member 51 that does not face the heating device 52, and opens the bell mouth 62. Through this, a flow of air discharged to the outside from the air suction port 7a for adsorption is generated.

(Outdoor air conditioning unit 5)

As shown in FIG. 3, the outdoor air conditioning unit 5 is connected to a compressor 63, a four-way switching valve 64 connected to the discharge side of the compressor 63, and a suction side of the compressor 63. The accumulator 65, the outdoor heat exchanger 66 connected to the four-way switching valve 64, and the expansion valve 67 connected to the outdoor heat exchanger 66 are provided. The expansion valve 67 is connected to one end of the indoor heat exchanger 12 through the refrigerant pipe. In addition, the four-way switching valve 64 is connected to the other end of the indoor heat exchanger 12 through the refrigerant pipe.

Further, in the outdoor air conditioning unit 5, a propeller fan 68 for discharging the air after heat exchange in the outdoor heat exchanger 66 to the outside, an outdoor fan motor 69 for rotationally driving the propeller fan 68, The electrical equipment unit 73 etc. are also arrange | positioned.

[Indoor (2)]

The indoor unit 2 is a wall-mounted indoor unit which is mounted on a wall of the room, and as shown in FIGS. 4 and 5, the main unit 10, the filter unit 20, the front grill 50, and the front panel ( 60) and a dust box (70). 4 is an exploded perspective view of the indoor unit 2, and FIG. 5 is a longitudinal cross-sectional view thereof.

<Body unit 10>

The main body unit 10 includes a bottom frame 11, an indoor heat exchanger 12, a first blower 16 (see FIG. 6), an electrical equipment unit 14, and the like.

An indoor heat exchanger 12, a first blower 16, an electrical equipment unit 14, and the like are mounted on the bottom frame 11. In addition, a blowout port 15 is provided in the lower part of the front surface of the bottom frame 11, and a horizontal flap 17 for guiding air blown out of the blowout port 15 is provided. The horizontal flap 17 is rotationally driven by the flap motor 18 (refer FIG. 6), and can change the guide direction of air, and can open and close the blower outlet 15. FIG.

The indoor heat exchanger 12 is comprised by the some fin and the heat exchanger tube through which a refrigerant | coolant flows, and performs heat exchange between the air which passes.

The first blower device 16 generates a flow of air blown into the room after being received from the room and temperature controlled by the indoor heat exchanger 12. The first blower 16 has a first blower fan 13 and an indoor fan motor 19. The first blower fan 13 is a cross flow fan, and is driven to rotate by the indoor fan motor 19.

In addition, the 1st air blower 16 and the indoor heat exchanger 12 comprise the temperature adjusting part 22 (refer FIG. 6) which makes it blow in indoor after receiving indoor air and adjusting temperature.

<Filter unit 20>

The filter unit 20 is attached to the bottom frame 11 of the main body unit 10 and includes a filter 21. This filter 21 is arrange | positioned at the front side (wind blowing side) of the indoor heat exchanger 12, and removes dust from the air received from indoor and outdoor. As a result, the filter 21 prevents dust floating in the air from contaminating the indoor heat exchanger 12. Moreover, this filter unit 20 winds up the winding mechanism 30 and the winding motor 26 which move the filter 21 downward, in order to perform the cleaning which removes the dust adhering to the filter 21. As shown in FIG. , See FIG. 6). In addition, in the state which is not wound by the winding mechanism 30, the filter 21 is arrange | positioned so that the almost whole area of the side from which the wind of the indoor heat exchanger 12 blows may be covered (refer FIG. 5).

As shown in FIG. 5, the winding mechanism 30 is disposed downstream of the air flow than the filter 21, and has a pair of upper and lower pulleys 31 and 32 and both pulleys 31 and 32. It has the annular belt 33 and the guide member 42 which were rolled up in between. The lower pulley 31 circulates the annular belt 33 by being rotationally driven by the winding motor 26. The guide member 42 is pressed downward and presses the annular belt 33 above the pulley 32.

<Front Grill (50) and Front Panel (60)>

As shown in FIG. 4, the front grill 50 is attached to the filter unit 20 so as to cover the filter unit 20, and the upper suction port 75 is provided on the top surface of the front grill 50. Is installed. In addition, the front grille 50 is equipped with a front panel 60 covering the front surface thereof, and the front grille 50 is rotated by rotating the front panel 60 in a forward and reverse direction. The front inlet port 76 formed at the front of the door can be opened and closed.

In addition, the front grill 50 is provided with a display unit 77 (refer to FIGS. 1 and 6) for displaying a driving condition of the indoor unit 2. The display unit 77 is provided so that it can be visually recognized from the front of the indoor unit 2. The display part 77 consists of several LED, and displays the operation state of the indoor unit 2 with or without lighting.

<Dust box (70)>

The dust box 70 has a function of cleaning the filter 21. The dust box 70 is attached to the upper position of the ejection opening 15 of the main body unit 10 under the front panel 60. The dust box 70 can be attached and detached from the outside without interfering with the front panel 60 in a state where the front panel 60 is closed. Moreover, the rotary brush 71 is arrange | positioned at the dust box 70, and this rotary brush 71 moves to this part from the lower side of the filter unit 20 to this part. Press contact. And at the time of cleaning, it is rotationally driven by the brush motor 78 (refer FIG. 6). The rotary brush 71, the brush motor 78, the winding mechanism 30, and the winding motor 26 move the filter 21 to clean the dust attached to the filter 21. 6).

[Control part 80]

The control part 80 shown in FIG. 6 is provided separately from the electrical component unit 14 of the indoor unit 2, and the electrical component unit 73 of the outdoor unit 3, and the instruction | command from the remote control 81 and various sensors ( Based on the information from (not shown), various controls such as temperature adjustment operation, humidification operation, air supply ventilation operation, exhaust operation and filter cleaning operation can be performed.

The operation during each air conditioning operation will be described below.

<Movement at each air-conditioning operation>

[Operation during Temperature Adjustment Operation]

In the temperature adjustment operation, the compressor 63 is driven and the expansion valve 67 is tightened to a predetermined opening degree, whereby the refrigerant circulates through the refrigerant circuit, so that the indoor heat exchanger 12 evaporates. Or as a condenser. Further, by driving the first blower fan 13, the upper suction port 75 and the entire suction port 76 are sucked into the indoor unit 2, and through the indoor heat exchanger 12, the room is discharged from the outlet 15. A stream of air is blown into the furnace. Thereby, indoor cooling or heating can be performed.

In addition, at the time of temperature adjustment operation, the front panel 60 opens with a predetermined opening degree, and the horizontal flap 17 also opens. The same is true for the humidification operation, the air supply ventilation operation, and the exhaust operation attempt.

[Operation at the time of humidification driving]

In the humidification operation, the switching damper 53 is switched to the first switching state, and the second blower 54 and the suction fan motor 59 are driven. In addition, the heating device 52 is energized.

When the suction fan motor 59 is driven, outdoor air is taken into the humidity control unit 4 and discharged to the outside (see solid arrow A3 in FIG. 2). That is, air from outside is taken in into the humidity control unit casing 7 from the suction air suction port 7b. The air which enters into the humidity control unit casing 7 passes through the position which does not oppose the heating apparatus 52 among the moisture absorption members 51. At this time, the moisture absorption member 51 adsorbs moisture from the air passing through the adsorption position of the moisture absorption member 51. The air passing through the suction / humidification member 51 is returned downward and is discharged to the outside of the outdoor unit 3 from the suction air outlet 7a.

On the other hand, when the second blower 54 is driven, outdoor air is taken into the humidity control unit 4 and supplied to the room through the supply / exhaust hose 6 and the indoor unit 2 (solid line arrow in FIG. 2). See A1). That is, outdoor air is taken into the humidity control unit casing 7 from the supply / exhaust mechanism 7c, passes the moisture absorption member 51 from below to upward, and heats in the heating apparatus 52, The humidifying member 51 passes from above to below. At this time, the moisture adsorbed to the moisture absorbing member 51 is excited, and the moisture is released from the moisture absorbing member 51 into the air. The air which has passed through the suction / humidification member 51 is sent to the supply / exhaust hose 6 via the switching damper 53 and the second blower 54. The air sent to the supply / exhaust hose 6 is sent to the inside of the indoor unit 2. The air sent to the inside of the indoor unit 2 passes through the filter 21 and the indoor heat exchanger 12, and is blown into the room from the blowout port 15. The air sent to this indoor unit 2 is made to contain the moisture adsorbed by the moisture absorption member 51, and the indoor humidification is performed by this.

In addition, the suction / humidification member 51 is rotationally driven by the rotor drive motor 57, and the adsorption and desorption of moisture is repeated. This makes it possible to humidify the room in water without water.

[Movement at the time of air supply ventilation driving]

When the air supply ventilation operation is performed, the adsorption fan motor 59 is not operated, and the heating device 52 is not energized, and the same operation as that of the humidification operation is performed. As a result, the air received from the outside is sent to the indoor unit 2 through the same path as described above without being humidified.

[Operation at Exhaust Operation]

In the exhaust operation, the switching damper 53 is switched to the second switching state, and the second blowing device 54 is driven. The adsorption fan motor 59 is not driven and is not energized by the heating device 52.

When the second air blower 54 is driven, the indoor air received from the indoor unit 2 is taken into the humidity control unit 4 via the supply / exhaust hose 6, and reversed from the above humidification operation. It is discharged to the outside by flowing to the outside (see dashed arrow A2 in Fig. 2). That is, the air taken in from the supply / exhaust duct 58 to the inside of the humidity control unit 4 passes the suction / humidification member 51 from below through the switching damper 53 and the second blower 54. Then, after passing through the heating apparatus 52, the moisture absorption member 51 passes from above to below, and is discharged | emitted from the supply-discharge mechanism 7c to the outdoors.

[Operation at the time of filter cleaning operation]

In the temperature adjustment operation, the humidification operation, the air supply ventilation operation, and the exhaust operation, the operation is performed with the filter 21 positioned at the normal position shown in FIG. When such an operation is performed, since dust adheres to the filter 21, when a predetermined condition is satisfied, the filter cleaning operation which automatically removes the dust adhering to the filter 21 is performed. Hereinafter, the operation at the time of the filter cleaning operation will be described with reference to FIGS. 5 and 7. In addition, in the state of FIG. 5 (state at the time of normal operation) for convenience of explanation, the lower part of the filter 21 is called a winding start-end part, and the upper end part of the filter 21 is wound up. It is called a terminal part.

First, from the state of FIG. 5, the control part 80 drives the winding motor 26, moves the annular belt 33, and rotationally drives the rotation brush 71 of the dust box 70. As shown in FIG. Then, the filter 21 descends with the annular belt 33, and the winding start end part rises up the back surface side through the periphery of the lower pulley 31. As shown in FIG. At this time, the rotating brush 71 rotates in the opposite direction to the lower pulley 31 to scrape off the dust on the surface of the filter 21. And before the winding start end reaches the position of the guide member 42, the winding end is wound around the annular belt 33. And when the winding start end reaches the position of the guide member 42, the guide member 42 is pushed up, it passes through the lower side, and it descends with the annular belt 33 continuously (refer FIG. 7). In this state, the guide member 42 is in pressure contact with the surface of the filter 21. And when the winding end part contacts the rotating brush 71 and the cleaning of this part is completed, the movement of the annular belt 33 and the rotation drive of the rotating brush 71 will be stopped, and the cleaning operation | movement of a path | route will be performed. Quit.

Next, the operation of the return path is performed, but at this time, the moving direction of the annular belt 33 and the rotating direction of the rotating brush 71 are reversed to the above path, and the rotating brush 71 stops. Leave it. In this case, the winding start end part passes through the position of the guide member 42 by the movement of the annular belt 33, and the guide member 42 is in the state which press-contacts the surface of the annular belt 33. As shown in FIG. Subsequently, the winding end portion is separated from the annular belt 33. This is because the annular belt 33 is bent to the rear side by the upper pulley 32, but the filter 21 tries to maintain an upright state due to its rigidity. The interval gradually widens, and as a result, the filter 21 moves away from the surface of the annular belt 33. At this time, even if the complete termination from the annular belt 33 of the winding end part is not performed, and even if the winding end part tries to follow the curvature of the annular belt 33, the guide member 42 is pressed against the surface of the annular belt 33. Since it is in contact, the peeling force in the direction which removes this from the annular belt 33 from the guide member 42 acts on the winding end part, and, by this, the winding end part certainly ensures the annular belt 33. Depart from Then, when the filter 21 returns to the normal use position shown in Fig. 5, the return operation is completed.

In addition, at the time of this filter cleaning operation, both the front panel 60 and the horizontal flap 17 will be in the closed state.

[Judgment of filter cleaning operation execution]

In this air conditioner 1, the control unit 80 starts the filter cleaning operation when the predetermined filter cleaning operation start condition is satisfied. The predetermined filter cleaning operation start condition means that the filter cleaning operation is instructed in the remote controller 81 or that the cumulative operation time of the temperature adjustment operation, the humidification operation, the air supply ventilation operation, or the like reaches a predetermined time. However, even if these filter cleaning operation start conditions are satisfied, the control part 80 performs the filter cleaning operation by the filter cleaning part 79 during execution of any one operation of a temperature adjustment operation, a humidification operation, and air supply ventilation operation. Do not run The determination of the filter cleaning operation execution will be described based on the flow in FIG. 8.

First, in step S1, it is determined whether the automatic cleaning mode is set. The automatic cleaning mode is a control mode in which the filter cleaning operation is automatically executed even if the user does not input an instruction on the remote controller 81, and may be set in advance by the remote controller 81.

When the automatic cleaning mode is set, the presence or absence of the cleaning request is determined in step S2. The cleaning request becomes "yes" when the cumulative operation time of the temperature adjustment operation, the humidification operation, the air supply ventilation operation, or the like reaches a predetermined time.

On the other hand, when it is determined in step S1 that the automatic cleaning mode is not set, it is determined in step S3 whether there is a cleaning request in manual operation, that is, whether or not the cleaning request is instructed from the remote controller 81. do.

In addition, whether there is a cleaning request in the automatic cleaning mode or when there is a cleaning request in the manual operation, whether or not the temperature adjustment operation is being executed, whether the humidification operation is being executed, or the air supply before the start of the cleaning operation. It is confirmed whether the ventilation operation is being performed (step S4, step S5, step S6). Here, when any one of the temperature adjustment operation, the humidification operation, and the air supply ventilation operation is performed, the filter cleaning operation is not started. That is, the filter cleaning operation is not started while the first blower 16 is being driven and at least one of the second blower 54 is being driven.

When the temperature adjustment operation or the humidification operation is being executed, the filter cleaning operation is executed in step S7 after the temperature adjustment operation or the humidification operation is completed.

When the air supply ventilation operation is being executed, the air supply ventilation operation is stopped once in step S8, and the filter cleaning operation is started in step S9. In addition, while the air supply ventilation operation is stopped for the filter cleaning operation, the indication that the air supply ventilation operation is stopped is displayed on the display unit 77. In step S10, it is determined whether or not the filter cleaning operation is completed. When the filter cleaning operation is completed, the air supply ventilation operation is resumed in step S11.

<Characteristic>

(One)

In this air conditioner 1, not only during the temperature adjustment operation but also during the humidification operation and the air supply ventilation operation, the filter cleaning operation is not performed. For this reason, the humidification operation and the air supply ventilation operation are prevented from being performed while the indoor heat exchanger 12 is not covered by the filter 21. Thereby, the increase of the dirt of the indoor heat exchanger 12 by the air which does not permeate the filter 21 through the indoor heat exchanger 12 can be prevented.

(2)

In the air conditioner 1, when the filter cleaning operation start condition is satisfied during the air supply ventilation operation, the filter cleaning operation is started after stopping the air supply ventilation operation, and the air supply ventilation operation is completed after the filter cleaning operation is completed. Resumed. For this reason, even when the air supply ventilation operation is continuously performed like the regular ventilation, the filter cleaning operation can be performed.

In addition, when the air supply ventilation operation is stopped for the filter cleaning operation, the effect is displayed on the display unit 77. For this reason, it is possible to inform the user that the air supply ventilation operation is stopped not because of a malfunction but because of the filter cleaning operation.

<Other Example>

(One)

As the filter cleaning operation start condition, other conditions may be used in place of the above conditions, and other conditions may be added together with the above conditions.

(2)

In the above embodiment, the display unit 77 is composed of a plurality of LEDs, but may be a liquid crystal screen or the like installed in the indoor unit 2 or the remote controller 81.

(3)

In the above embodiment, the wall-mounted indoor unit 2 is used, but an indoor unit of another installation type may be used.

(4)

In the above embodiment, the filter 21 reciprocates and the rotary brush 71 is operated during the return path. However, the filter 21 is not limited to these operating methods as long as it removes dust on the filter 21. For example, the rotary brush 71 may also be operated to clean the ears, the filter 21 may be partially reciprocated, the filter 21 may be paused to be cleaned, or the rotary brush 71 may be rotated. The direction may be reversed or may be operated completely.

(5)

In the above embodiment, the drive method of the filter 21 is a reciprocating operation of the belt drive, but other drive methods may be used.

This invention has the effect which can prevent an air flowing out through a filter by a filter cleaning operation, and is useful as an air conditioner.

Claims (4)

A temperature adjusting section 22 which receives the air in the room and adjusts the temperature and blows it into the room; A ventilator (4) to receive outdoor air and blow it into the room, A filter 21 for removing dust from the air received from indoors and outdoors; A filter cleaning unit 79 for moving the filter 21 to clean the dust attached to the filter 21; The control unit 80 does not execute the filter cleaning operation by the filter cleaning unit 79 during the temperature adjustment operation by the temperature adjusting unit 22 and during the ventilation operation by the ventilation unit 4. Air conditioner (1) having a. The method of claim 1, The control unit 80 stops the ventilation operation and starts the filter cleaning operation when the predetermined filter cleaning operation start condition is satisfied while the temperature adjusting operation is stopped and the ventilation operation is executed. To resume the ventilation operation after completion of the filter cleaning operation, Air conditioner (1). The method of claim 2, While the ventilation operation is stopped for the filter cleaning operation, the display unit 77 further displays an indication that the ventilation operation is stopped. Air conditioner (1). The method according to any one of claims 1 to 3, The temperature adjusting section 22 has a first blower device 16 which generates a flow of air blown into the room after being received from the room and temperature-controlled, The ventilator 4 has a second blower device 54 which generates a flow of air which is received from the outside and blown into the room, The control unit 80 does not execute the filter cleaning operation by the filter cleaning unit 79 during the driving of the first blower 16 and the driving of the second blower 54. Air conditioner (1).

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