JP7183083B2 - Indoor unit and air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an indoor unit and an air conditioner.

2. Description of the Related Art Conventionally, an indoor unit of an air conditioner takes in indoor air, adjusts the temperature of the indoor air, and then blows out the temperature-adjusted indoor air into the room. At this time, an air filter that collects dust floating in the indoor air and prevents it from entering the indoor unit is provided at the inlet of the indoor unit.

As the indoor unit continues to operate, the air filter accumulates collected dust. Then, the circulation resistance of indoor air in the air filter increases, and the efficiency of the indoor unit decreases. Therefore, an indoor unit having a cleaning section for cleaning the air filter has been proposed in order to remove the dust adhering to the air filter (see, for example, Patent Document 1). In Patent Literature 1, when the cleaning time for the cleaning unit has arrived, the control unit outputs a control signal to rotate the fan motor, and then lowers the cleaning unit together with the suction grille.

JP 2013-53846 A

However, in Patent Document 1, the cleaning unit is lowered after the control signal for rotating the fan motor is output, so there is a possibility that the cleaning unit will be lowered before the indoor intake air starts to flow into the indoor unit. There is In this case, when the cleaning unit descends, some of the dust may drop off from the cleaning unit and fall into the indoor space.

The present invention has been made in view of such circumstances, and suppresses the problem that a part of the dust falls off and falls into the indoor space when lowering the grill to which the storage part for storing the dust is attached. To provide an indoor unit and an air conditioner capable of

In order to solve the above problems, an indoor unit according to one aspect of the present invention employs the following means.
An indoor unit according to an aspect of the present invention includes a main body, a grill installed in an opening for sucking indoor air into the main body, a fan for sucking the indoor air into the main body through the opening, and the main body. a filter for collecting dust in the indoor air sucked into the fan, a dust removing mechanism for removing dust adhering to the filter by moving along the filter, and a filter attached to the grill a storage section for storing dust removed by the dust removing mechanism; an elevating mechanism for elevating the grill; and a control section for controlling the fan and the elevating mechanism, wherein the control section controls the grill is received from the operator, the fan is controlled to start rotating, and when a predetermined startup time elapses after the fan starts rotating, to control the lifting mechanism so as to lower the grill from the main body.

According to the indoor unit according to one aspect of the present invention, when a lowering instruction to lower the grill from the main body is received from the operator, the controller stops rotation of the fan prior to lowering the grill from the main body. let it start. In addition, the control unit lowers the grill from the main body when the indoor air starts to flow into the main body through the opening after a predetermined activation time has elapsed. Therefore, when the grill is lowered from the main body, the indoor air starts to flow into the main body through the opening. Therefore, even if some of the dust falls off when the grill is lowered, if the dust is heavy enough to rise with the flow of the indoor air, it will not fall into the indoor space and will be collected by the filter. . As described above, according to the indoor unit according to one aspect of the present invention, when the grill attached to the storage portion for storing dust is lowered, the problem of part of the dust falling off and falling into the indoor space is suppressed. can do.

In the indoor unit according to one aspect of the present invention, when the control unit receives from the operator an instruction to raise the grill to a position where it is attached to the main body, the control unit is configured to continue until the grill is attached to the main body. The elevating mechanism is controlled to lift the grille, and the fan is controlled to keep the fan rotating at least until the grille is lowered from the main body and then attached to the main body again. may be configured.

According to the indoor unit having the above configuration, the fan keeps rotating at least until the grille is lowered from the main body and then attached to the main body again. Therefore, in a state in which the grille is not attached to the main body, the state in which room air flows into the main body through the opening is maintained. Therefore, it is possible to prevent the problem that some of the dust falls out of the filter and falls into the interior space as the grille descends and ascends.

In the indoor unit having the above configuration, when the upward instruction is received from the operator, the control section restarts the fan in response to a predetermined standby time having passed since the grill was attached to the main body. The fan may be controlled to stop rotating.
By doing so, the state in which room air flows into the main body through the opening is maintained until the predetermined waiting time elapses after the grill is attached to the main body. Therefore, compared with the case where the fan is stopped immediately after the grill is attached to the main body, it is possible to suppress the problem that some of the dust falls out of the filter and falls into the interior space after the grill is attached to the main body. can.

In the indoor unit according to one aspect of the present invention, the predetermined startup time is, for example, 3 seconds or longer. To lower the grille from the main body in a state in which a sufficient amount of room air flows into the main body from the opening by lowering the grille from the housing after elapse of, for example, 3 seconds or more after the rotation of the fan is started. can be done.

An indoor unit according to an aspect of the present invention includes a moving mechanism for moving the dust removing mechanism and the storage portion between one end and the other end of the filter along the filter, and the control portion controls the moving mechanism so as to move the dust removing mechanism and the storage section to a position near an intermediate position between the one end and the other end when the descent instruction is received from the operator; The elevating mechanism may be controlled to lower the grill from the main body in response to the elapse of the activation time and the movement of the dust removing mechanism and the storage portion to the vicinity of the intermediate position.

By moving the dust removing mechanism and the reservoir to the vicinity of the intermediate position of the filter, the dust removing mechanism and the reservoir are arranged near the center of the area where the indoor air flowing into the main body exists. Therefore, even if some of the dust falls off when the grill is lowered from the main body, the dust can be more reliably collected by the filter.

In the indoor unit according to one aspect of the present invention, the main body is installed in a ceiling, and an air outlet for blowing the indoor air sucked into the main body by the fan into the room; and a rotatably installed flap, wherein the control unit causes the room air to be blown out from the outlet in a horizontal direction along the ceiling when the descent instruction is received from the operator. You may control the rotation angle of the said flap.

Since the blown air is blown out from the outlet in the horizontal direction along the ceiling, the blown air is not directly led to the user in the room. In addition, since the blowing air does not have a downward component in the vertical direction, the dust adhering to the dust removing mechanism is suppressed from falling downward due to the blowing air.

An air conditioner according to an aspect of the present invention includes any one of the above indoor unit units, and an outdoor unit connected to the indoor unit unit via a refrigerant pipe.
According to the air conditioner according to the aspect of the present invention, it is possible to suppress the problem that a part of the dust falls off and falls into the indoor space when the grill attached to the storage part for storing the dust is lowered. .

ADVANTAGE OF THE INVENTION According to the present invention, an indoor unit and an air conditioner capable of suppressing a problem that a part of dust falls off and falls into an indoor space when lowering a grill to which a storage part for storing dust is attached. can be provided.

It is a figure showing the whole air conditioner composition concerning a 1st embodiment of the present invention. FIG. 3 is a perspective view of the ceiling panel from below with the intake grille removed; FIG. 4 is a perspective view of a dust removing mechanism incorporated in the ceiling panel; FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, showing a state in which the suction grille and the reservoir are attached to the main body of the indoor unit; FIG. 4 is a cross-sectional view showing a state in which the suction grille and the reservoir are lowered from the main body of the indoor unit; FIG. 4 is a plan view showing the intake grille and reservoir of the ceiling panel; It is a block diagram which shows the control structure of an indoor unit. 4 is a flowchart showing processing executed by a controller of the indoor unit according to the first embodiment; 4 is a flowchart showing processing executed by a controller of the indoor unit according to the first embodiment; It is a flowchart which shows the process which the control part of the indoor unit which concerns on 2nd Embodiment performs. It is a flowchart which shows the process which the control part of the indoor unit which concerns on 2nd Embodiment performs. FIG. 5 is a cross-sectional view showing a state in which the suction grille and the reservoir are moved to the vicinity of an intermediate position between one end and the other end of the air filter; FIG. 4 is a cross-sectional view showing a state in which the suction grille and the reservoir are lowered from the main body of the indoor unit;

[First Embodiment]
An air conditioner 1 according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a ceiling-embedded air conditioner 1 according to the present embodiment. As shown in FIG. 1, an air conditioner 1 includes an indoor unit 2 installed on the ceiling of a room, an outdoor unit 3 installed outdoors, and a remote controller for receiving instructions from an operator for the air conditioner 1. 100. The indoor unit 2 and the outdoor unit 3 are connected via two refrigerant pipes 4 and electric wiring 5, each of which consists of a liquid pipe and a gas pipe.

As shown in FIG. 1, the outdoor unit 3 includes a compressor 6 that compresses the refrigerant, an outdoor heat exchanger 7 that exchanges heat between the refrigerant and the outside air, and an outdoor fan 8 that circulates the outside air through the outdoor heat exchanger 7. , a control box 9 and the like. The indoor unit 2 includes a body portion 10 installed in the ceiling and a ceiling panel 11 attached to the lower portion of the body portion 10 .

A turbo fan 12 is rotatably installed in the center of the main body 10 via a fan motor (not shown), and an indoor heat exchanger 13 is installed so as to surround the turbo fan 12 . A bell mouth 14 that guides room air to the turbo fan 12 is arranged below the turbo fan 12 . The turbo fan 12 rotates around an axis extending in the vertical direction to generate a suction force for sucking room air into the main body 10 through the opening 15 .

A ceiling panel 11 is provided on the lower surface of the main body 10 so as to cover the lower surface. At the center of the ceiling panel 11, a rectangular opening (air intake port) 15 for sucking in room air is provided. A suction grill 16 is installed in the opening 15 . The suction grille 16 can be moved up and down with respect to the ceiling panel 11 by an elevating mechanism 17 so as to be lowered to near the floor of the room.

The elevating mechanism 17 is a mechanism for elevating the suction grille 16 along the vertical direction with respect to the main body 10 . The elevating mechanism 17 includes a wire 17a and an elevating motor (not shown). The elevating mechanism 17 rotates an elevating motor to which a pulley (not shown) is attached, thereby unwinding the wire 17a from the pulley and lowering the suction grille 16, and winding the wire 17a around the pulley to lift the suction grille 16. raise.

The ceiling panel 11 is provided with four air outlets 18 corresponding to four sides of the panel so as to surround an opening 15 which is an air inlet. The air outlet 18 is an opening through which indoor air that has been sucked into the main body 10 by the turbofan 12 and cooled or heated by the indoor heat exchanger 13 is blown out into the room. Each of the four air outlets 18 is provided with flaps 19 that are rotatable independently for adjusting the direction of the blown air.

FIG. 2 is a bottom perspective view of the ceiling panel 11 with the intake grille 16 removed. A frame body 20 having a shape corresponding to the rectangular opening 15 is provided on the back side of the ceiling panel 11 . The frame 20 of the ceiling panel 11 is provided with a dust removal mechanism 24, which will be described later. It is Note that FIG. 1 shows a state in which the dust removing mechanism 24 and the air filter 21 are removed.

As shown in FIG. 3, the air filter 21 set in the dust removing mechanism 24 is a planar air filter composed of a grid-shaped filter frame 21A functioning as a strength member and a mesh surface 21B. can be used.

Next, the dust removing mechanism 24 will be described with reference to the drawings. FIG. 3 is a plan view of the dust removing mechanism 24 incorporated in the ceiling panel 11. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. FIG. 5 is a longitudinal section of the suction grille 16 and the reservoir 30 lowered. FIG. 6 is a plan view showing the intake grille and reservoir of the ceiling panel.

As shown in FIGS. 2 and 3, the frame 20 incorporates a dust removal mechanism 24 that automatically removes dust collected by the air filter 21 to clean the air filter 21 . A dust removing mechanism 24 is incorporated between the air filter 21 and the intake grille 16 . As shown in FIG. 5 , the storage section 30 that constitutes the dust removing mechanism 24 is attached to the suction grill 16 so that it can move up and down together with the suction grill 16 . The vertical arrows shown in FIG. 5 indicate the vertical direction of the intake grille 16 .

A pair of driving mechanisms 23 and a dust removing mechanism 24 are installed between the lower surface side (inside the room) of the air filter 21 and the intake grille 16 . The pair of drive mechanisms 23 are arranged in parallel to the left and right with the air filter 21 interposed therebetween. A pair of drive mechanisms 23 move the dust removing mechanism 24 and storage portion 30 along the air filter 21 at one end (the right end shown in FIG. 4) and the other end (the left end shown in FIG. 4) of the air filter 21. ) is a mechanism for moving between Left-right arrows shown in FIG. 4 indicate moving directions of the dust removing mechanism 24 .

Each of the pair of drive mechanisms 23 has a drive shaft 25 extending along the air filter 21, a motor 26 for rotating the drive shaft 25, a bearing 27 for rotatably supporting the drive shaft 25, and the like. The drive shaft 25 is a screw shaft having a male thread on its outer periphery, and is rotatable by being connected to a motor 26 at one end and supported by a bearing 27 at the other end. As shown in FIG. 3 , the motor 26 is connected to one end of the drive shaft 25 and arranged diagonally with respect to the air filter 21 .

The dust removing mechanism 24 is a mechanism that removes dust adhering to the lower surface of the air filter 21 by reciprocating along the lower surface of the air filter 21 via the drive mechanism 23 . The dust removing mechanism 24 is arranged between the pair of left and right driving mechanisms 23 in a direction orthogonal to the driving mechanisms 23 . Both ends of the dust removing mechanism 24 are connected to a pair of drive mechanisms 23 , and driving force is transmitted from the drive mechanisms 23 in the extension direction of the drive mechanisms 23 . The dust removing mechanism 24 scrapes and removes dust collected by the air filter 21 by reciprocating in the extension direction of the drive mechanism 23 .

As shown in FIGS. 3 and 4, the dust removing mechanism 24 includes a brush member 28, a brush support member 29 that supports the brush member 28, and a storage section 30 that stores the dust D removed by the brush member 28. I have. The brush member 28 is a cylindrical member extending in a direction perpendicular to the extension direction of the drive shaft 25, and both ends thereof are rotatably supported by brush support members 29. As shown in FIG.

The brush support member 29 covers the periphery of the brush member 28 and supports the brush member 28 so as to be rotatable about its axis. As shown in FIG. 4, the brush support member 29 is provided with openings 29A and 29B on its upper and lower surfaces facing the air filter 21 side and the suction grille 16 side, respectively. The brush member 28 can come into contact with the lower surface of the air filter 21 by protruding from the opening 29A toward the air filter 21 side. The dust D removed from the air filter 21 falls into the storage portion 30 through the opening 29B and is stored.

The drive shafts 25 of the pair of left and right drive mechanisms 23 pass through both ends of the brush support member 29 in the longitudinal direction. ) is provided. Thereby, both ends of the dust removing mechanism 24 are connected to the pair of left and right driving mechanisms 23 . The dust removing mechanism 24 moves in the extension direction of the drive shaft 25 when the drive shaft 25 is rotated by the driving force of the motor 26 .

FIG. 6 shows the positional relationship between the intake grille 16 and the reservoir 30. As shown in FIG. As shown in FIGS. 4 and 5 , the storage portion 30 moves together with the brush member 28 and the brush support member 29 and stores (collects) the dust D removed from the air filter 21 by the brush member 28 . The reservoir 30 is separated from the air filter 21 , the brush member 28 , the brush support member 29 and the like and attached to the suction grill 16 .

As shown in FIG. 6 , the storage section 30 is provided with a collection section 31 , a claw section 32 and a guide section 33 . As shown in FIGS. 4 and 5 , the collecting portion 31 is the main body of the storage portion 30 and has a concave shape for collecting the dust D removed from the air filter 21 by the brush member 28 . The collecting portion 31 is recessed toward the suction grill 16 and has a volume capable of accumulating a certain amount of dust D removed from the air filter 21 .

The claw portion 32 is a member for transmitting the movement of the brush member 28 and the brush support member 29 to the storage portion 30 and for integrating the brush member 28 and the brush support member 29 which are separated from each other with the storage portion 30 . be. As shown in FIG. 6, the claw portions 32 are arranged at four corners of the upper surface of the storage portion 30 and protrude upward. When the brush support member 29 moves from the outside to the inside of the reservoir 30 and contacts the inclined surface of the claw portion 32, the claw portion 32 is elastically deformed and rotated, whereby the brush support member 29 is moved to the four claws. Fits in part 32 .

The guiding portion 33 contacts a rail 34 provided on the side of the suction grill 16 to move the storage portion 30 along the surface of the suction grill 16 . A pair of wheels 35 are provided on each of the longitudinal ends of the storage section 30 in the guide section 33 . The wheel 35 is a columnar member that is rotatably supported around a rotation axis extending in a direction perpendicular to the surface of the intake grille 16 . An annular groove in which the rail 34 is arranged is formed in the circumferential surface of the wheel 35 .

The rail 34 is a plate-shaped member that can be attached to and detached from the intake grille 16 . The rail 34 is provided with a projection extending along the surface of the intake grille 16 and extending inward from the outside of the intake grille 16, and the projection of the rail 34 and the groove of the wheel 35 are engaged.

Next, the control configuration of the indoor unit 2 will be described with reference to the drawings. FIG. 7 is a block diagram showing the control configuration of the indoor unit 2. As shown in FIG. As shown in FIG. 7 , the indoor unit 2 of this embodiment includes a controller 50 . The control section 50 controls each section of the indoor unit 2 including the turbofan 12 , the lifting mechanism 17 , the flap 19 and the driving mechanism 23 . An operator of the air conditioner 1 receives an operator's instruction via the remote control 100, and transmits a control signal corresponding to the received instruction to the control unit 50 by wireless communication. The control section 50 controls each section of the indoor unit 2 according to an operator's instruction received via the remote controller 100 .

Next, processing executed by the control unit 50 of this embodiment will be described with reference to the drawings. FIGS. 8 and 9 are flow charts showing processing executed when control unit 50 receives an instruction to lower intake grille 16 . When the controller 50 receives an operator's instruction via the remote controller 100, the controller 50 executes a process according to the received instruction. The control unit 50 reads out and executes programs stored in a storage unit (not shown), thereby executing various processes described below.

In step S801, the control unit 50 determines whether or not a lowering instruction to lower the intake grille 16 from the main unit 10 has been received from the operator, and if YES, the process proceeds to step S802. When the operator inputs a lowering instruction to lower the intake grille 16 via the remote controller 100 and receives a control signal corresponding to the lowering instruction from the remote controller 100, the controller 50 determines YES.

In step S802, in response to receiving an instruction to lower the intake grille 16, the control unit 50 adjusts the rotation angle of the flap 19 so that the blowing direction of the air blowing out from the air blowing port 18 is set in the horizontal direction. Control. As a result, the blown air is blown out from the air outlet 18 in the horizontal direction along the ceiling.

Here, the reason why the blowing direction is set to the horizontal direction is to prevent the blowing air from being guided to the user of the air conditioner 1 in the room. In addition, the blowing air is prevented from having a downward component in the vertical direction, thereby suppressing the dust adhering to the dust removing mechanism 24 from falling downward due to the blowing air.

In step S803, the controller 50 controls the fan motor of the turbofan 12 to start rotating the turbofan 12 in response to receiving the instruction to lower the intake grille 16. FIG. By starting the rotation of the turbo fan 12 , the turbo fan starts to draw indoor air into the main body 10 .

In step S804, the control unit 50 determines whether or not a predetermined startup time has elapsed after the turbo fan 12 started rotating, and if YES, the process proceeds to step S805. Here, the predetermined activation time is, for example, an arbitrary time of 3 seconds or more. The reason why the predetermined start-up time is provided is that the intake grille 16 is lowered after a sufficient amount of indoor air flows into the main body 10 through the opening 15 .

A sufficient amount of indoor air has not flowed into the main body 10 from the opening 15 immediately after the turbofan 12 starts rotating. Therefore, if the intake grille 16 is lowered immediately after the turbofan 12 starts rotating, the dust falling off the dust removing mechanism 24 will fall directly into the room. By lowering the suction grille 16 after a sufficient amount of room air flows into the inside of the main body 10 from the opening 15, even if the dust falls out of the dust removing mechanism 24, the dust is sucked and air is sucked. It can be collected by the filter 21 .

In step S805, the control unit 50 operates the lifting mechanism 17 so as to lower the intake grille 16 from the frame 20 of the main body 10 in response to the lapse of a predetermined activation time after the turbo fan 12 starts rotating. Control. The controller 50 lowers the suction grille 16 and the reservoir 30 by rotating the elevation motor of the elevation mechanism 17 to unwind the wire 17a from the pulley. When the intake grille 16 is lowered from the main body 10, the state shown in FIG. 4 is switched to the state shown in FIG.

In step S806, the control unit 50 determines whether or not an instruction to raise the intake grille 16 to the position where it is attached to the main unit 10 has been received from the operator. If YES, the process proceeds to step S807. The control unit 50 determines YES when the operator inputs a raise instruction to raise the intake grille 16 via the remote controller 100 and receives a control signal corresponding to the raise instruction from the remote controller 100 .

In step S<b>807 , the control unit 50 controls the lifting mechanism 17 to lift the intake grille 16 to the position where it is attached to the main body unit 10 in response to receiving the lift instruction from the operator. The controller 50 rotates the elevator motor of the elevator mechanism 17 to wind the wire 17a around the pulley, thereby raising the suction grille 16 and the reservoir 30 . When the intake grille 16 rises from the main body 10, the state shown in FIG. 5 is switched to the state shown in FIG.

In step S808, the control unit 50 determines whether or not the intake grille 16 is attached to the main body unit 10, and if YES, the process proceeds to step S809. The controller 50 determines whether or not the intake grill 16 is attached to the main body 10, for example, based on the cumulative number of rotations of the lifting motor after the winding of the wire 17a is started. Further, the control unit 50, for example, in response to receiving a signal indicating attachment from a sensor (not shown) that detects whether or not the intake grille 16 is attached to the main body unit 10, attaches the intake grille 16 to the main unit 10. It may be determined that it is installed.

In step S809, control unit 50 determines whether or not a predetermined waiting time has elapsed since intake grille 16 was attached to main body 10. If YES, the process proceeds to step S810. Here, the predetermined waiting time is, for example, any time of 3 seconds or more.

In step S810, the control unit 50 controls the turbo fan 12 to stop the rotation of the turbo fan 12 in response to the lapse of a predetermined standby time after the intake grille 16 is attached to the main body 10. 8 ends. The control unit 50 stops rotation of the turbofan 12 by transmitting a stop signal to the fan motor of the turbofan 12 .

The control unit 50 keeps the turbo fan 12 rotating from when the turbo fan 12 starts rotating in step S802 until the turbo fan 12 stops rotating in step S810. In this case, after the suction grill 16 starts to descend from the main body 10, the suction grill 16 rises again and is attached to the main body 10, and the turbo fan 12 rotates until a predetermined waiting time elapses. state is maintained.

In the above description, the control unit 50 stops the rotation of the turbo fan 12 when the predetermined waiting time has elapsed after the intake grille 16 is attached to the main body 10. It may be an aspect. For example, the control unit 50 may omit the process of step S<b>809 and stop the rotation of the turbo fan 12 when the intake grille 16 is attached to the main body 10 . In this case, after the suction grille 16 starts to descend from the main body portion 10 , the rotating state of the turbofan 12 is maintained until the suction grille 16 is again raised and attached to the main body portion 10 .

The operation and effects of the indoor unit 2 of the present embodiment described above will be described.
According to the indoor unit 2 of the present embodiment, when a lowering instruction to lower the intake grill 16 from the main body 10 is received from the operator, the controller 50 controls the to start rotating the turbo fan 12 . Further, the controller 50 lowers the intake grille 16 from the main body 10 when the room air starts to flow into the main body 10 through the opening 15 after a predetermined activation time has elapsed.

Therefore, when the intake grille 16 is lowered from the main body 10 , the room air starts to flow into the main body 10 through the opening 15 . Therefore, even if some of the dust falls off when the intake grille 16 is lowered, if the dust is heavy enough to be lifted by the flow of the indoor air, it will not fall into the indoor space and will be removed by the air filter 21. be captured. As described above, according to the indoor unit 2 of the present embodiment, when the suction grille 16 to which the storage section 30 for storing dust is lowered, part of the dust falls off and falls into the indoor space. can be suppressed.

According to the indoor unit 2 of the present embodiment, the rotating state of the turbo fan 12 is maintained at least until the intake grille 16 is lowered from the main body 10 and then attached to the main body 10 again. Therefore, in a state in which the intake grille 16 is not attached to the main body 10, the state in which the indoor air flows into the main body 10 through the opening 15 is maintained. Therefore, it is possible to prevent a problem that some of the dust falls off the air filter 21 and falls into the indoor space as the suction grille 16 moves downward and upward.

According to the indoor unit 2 of the present embodiment, the state in which indoor air flows into the main body 10 through the opening 15 is maintained until the predetermined waiting time elapses after the intake grille 16 is attached to the main body 10. be done. Therefore, compared to the case where the turbo fan 12 is stopped immediately after the suction grille 16 is attached to the main body 10, some of the dust falls off the air filter 21 after the suction grille 16 is attached to the main body 10, causing the dust to fall out of the room. It is possible to suppress the problem of falling into space.

According to the indoor unit 2 of the present embodiment, the blown air is blown out from the air outlet 18 in the horizontal direction along the ceiling, so the blown air is not directly guided to the user in the room. In addition, since the blown air is not directed downward in the vertical direction, the dust adhering to the dust removing mechanism 24 is suppressed from falling downward due to the blown air.

[Second embodiment]
Next, an air conditioner according to a second embodiment of the invention will be described. The second embodiment is a modified example of the first embodiment, and is assumed to be the same as the first embodiment except for the case where it will be particularly described below, and the description thereof will be omitted.

In the air conditioner of the first embodiment, the suction grille 16 is lowered while the dust removing mechanism 24 and the storage section 30 are arranged at the end of the air filter 21 . On the other hand, in the air conditioner of the present embodiment, after moving the dust removing mechanism 24 and the storage section 30 to the center of the air filter 21, the intake grille 16 is lowered.

Next, processing executed by the control unit 50 of this embodiment will be described with reference to the drawings. FIGS. 10 and 11 are flowcharts showing processing executed when control unit 50 receives an instruction to lower intake grille 16 . When the controller 50 receives an operator's instruction via the remote controller 100, the controller 50 executes a process according to the received instruction. The control unit 50 reads out and executes programs stored in a storage unit (not shown), thereby executing various processes described below.

10 and 11, steps S1001, S1003, and S1004 are the same as steps S801, S802, and S803 in the first embodiment, and thus description thereof will be omitted. Also, since steps S1005 to S1009 are the same as steps S804 to S808 in the first embodiment, descriptions thereof will be omitted. Also, since steps S1010 and S1011 are the same as steps S809 and S810 in the first embodiment, description thereof will be omitted.

Processing unique to this embodiment is steps S1002 and S1012.
In step S1002, control unit 50 moves dust removing mechanism 24 and storage unit 30 to the vicinity of the intermediate position between one end 21a and other end 21b of air filter 21 in response to receiving the instruction to lower intake grille 16. The driving mechanism 23 is controlled so as to move to .

FIG. 12 is a cross-sectional view showing a state in which the intake grille 16 and the reservoir 30 are moved to the vicinity of the intermediate position between the one end 21a and the other end 21b of the air filter 21 in step S1002. Here, the vicinity of the intermediate position is, for example, 1/2 of the distance connecting the one end 21a and the other end 21b centering on the midpoint (intermediate position) of the one end 21a and the other end 21b of the air filter 21. is any position within the range of . It is desirable to set the position of the midpoint of the one end 21a and the other end 21b of the air filter 21 as the vicinity of the intermediate position. Thereafter, when the intake grille 16 is lowered in step S1006, the state shown in FIG. 13 is obtained.

On the other hand, in step S1012, control unit 50 moves dust removing mechanism 24 and storage unit 30 to one end 21a and the other end of air filter 21 in response to receiving an instruction to raise intake grille 16. The drive mechanism 23 is controlled to move from the vicinity of the intermediate position with 21b to the vicinity of the one end portion 21a.

According to the indoor unit 2 of the present embodiment, the control unit 50 moves the dust removing mechanism 24 and the storage unit 30 from the one end 21a of the air filter 21 to the other end when receiving an instruction to lower the suction grille 16 from the operator. The drive mechanism 23 is controlled so as to move to the vicinity of the intermediate position with respect to the portion 21b. Then, the elevating mechanism 17 is controlled to lower the intake grille 16 from the main body 10 when a predetermined activation time has elapsed and the dust removing mechanism 24 and the storage section 30 have moved to the vicinity of the intermediate position.

By moving the dust removing mechanism 24 and the storage section 30 to the vicinity of the intermediate position of the air filter 21, the dust removing mechanism 24 and the storage section 30 are moved to the vicinity of the center of the area where the indoor air flowing into the main body 10 exists. placed. Therefore, even if some of the dust falls off when the suction grille 16 is lowered from the main body 10, the dust can be more reliably collected by the air filter 21.例文帳に追加

1 Air conditioner 2 Indoor unit 3 Outdoor unit 4 Refrigerant pipe 15 Opening 16 Suction grill 17 Elevating mechanism 18 Air outlet 19 Flap 21 Air filter 21a One end 21b Other end 23 Drive mechanism 24 Dust removal mechanism 30 Reservoir 100 Remote controller D Dust

Claims (7)

a main body;
a grill installed at an opening through which indoor air is sucked into the main body;
a fan for sucking the indoor air from the opening into the main body;
a filter that is attached to the main body and collects dust in the indoor air that is sucked into the fan;
a dust removing mechanism that removes dust adhering to the filter by moving along the filter;
a storage unit attached to the grill and storing dust removed by the dust removal mechanism;
a lifting mechanism for lifting and lowering the grill;
A control unit that controls the fan and the lifting mechanism,
The control unit controls the fan to start rotating the fan when a lowering instruction to lower the grill from the main body is received from the operator, and a predetermined start-up is performed after the fan starts rotating. An indoor unit that controls the lifting mechanism to lower the grill from the main body in accordance with the passage of time. When receiving from the operator an instruction to raise the grill to a position where it is attached to the body, the control unit controls the elevating mechanism so as to raise the grill until it is attached to the body. 2. The indoor unit according to claim 1, wherein the fan is controlled so as to keep the fan rotating at least until the grille is lowered from the main body and is mounted on the main body again. The controller controls the fan so as to stop the rotation of the fan when a predetermined waiting time has elapsed since the grill was attached to the main body when the upward instruction is received from the operator. The indoor unit according to claim 2, which controls. The indoor unit according to any one of claims 1 to 3, wherein the predetermined startup time is 3 seconds or longer. a driving mechanism for moving the dust removing mechanism and the storage portion along the filter between one end and the other end of the filter;
The control unit controls the drive mechanism to move the dust removing mechanism and the storage unit to near an intermediate position between the one end and the other end when the lowering instruction is received from the operator. and controlling the elevating mechanism to lower the grill from the main body when the predetermined startup time has elapsed and the dust removing mechanism and the storage section have moved to the vicinity of the intermediate position. The indoor unit according to any one of claims 1 to 4. The main body is installed in the ceiling,
an air outlet for blowing out the indoor air sucked into the main body by the fan into the room;
a flap rotatably installed at the outlet,
2. The control unit, when receiving the lowering instruction from the operator, controls the rotation angle of the flap so that the indoor air is blown out from the outlet in a horizontal direction along the ceiling. The indoor unit according to any one of claims 1 to 5. an indoor unit according to any one of claims 1 to 6;
An air conditioner comprising: an outdoor unit connected to the indoor unit via a refrigerant pipe.

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