JP5755088B2 - Air conditioner indoor unit - Google Patents

Description

  Embodiments of the present invention relate to an indoor unit of an air conditioner including an air filter automatic cleaning device that automatically cleans an air filter installed in an indoor unit body.

  The indoor unit of the air conditioner has an air filter attached to the upstream side of the air passage of the heat exchanger accommodated in the air passage in the indoor unit body, and the indoor air sucked into the air passage in the indoor unit body And only clean air is directed to the heat exchanger. Since dust attached to the air filter surface accumulates over a long period of use, the user needs to remove the air filter from the interior of the indoor unit body at appropriate intervals and remove the dust attached to the air filter surface.

  However, this operation is troublesome and troublesome, and the air filter is easily left in the indoor unit body. Therefore, an air conditioner equipped with an air filter automatic cleaning device that automatically removes dust adhering to the surface of the air filter inside the indoor unit main body has been used without removing the air filter from the indoor unit main body. .

JP-A-2005-155594 JP 2007-155239 A JP 2007-333365 A

  However, the dust removed from the surface of the air filter is accumulated in a dust box constituting the air filter automatic cleaning device, and in any case, a predetermined amount of dust that needs to be discharged is accumulated. In this state, a notification signal is issued to inform the user that it is necessary to discharge the dust in the dust box, so the user removes the dust box from the indoor unit body, discharges the dust accumulated in the dust box, empties it, The operation | work which attaches to the predetermined part of an indoor unit main body again is required.

  The frequency of occurrence is less than when the air filter itself is removed and cleaned, but the task of removing the dust box from the indoor unit usually installed at a high place on the wall surface of the room is a big deal for elderly people. It was a burden.

  In addition, the dust removed from the air filter surface during the air filter cleaning operation and collected in the dust box is exhausted to the outside of the indoor unit by the exhaust fan via the exhaust duct, so that the user is not required to clean the filter. There are indoor units, but they could only be used in some models, such as indoor units that do not have an exhaust function or indoor units that are installed on walls that do not communicate with the outside.

  Furthermore, with the air filter attached to the indoor unit, a vacuum cleaner suction nozzle is attached to the hole communicating with the indoor unit body, and dust attached to the air filter is removed by the filter cleaning device using the vacuum cleaner's suction force. Some indoor units have a structure that sucks into the vacuum cleaner while removing dust from the filter, but it is not practical because it is necessary to keep the vacuum cleaner connected until the air filter cleaning is completed. .

  For this reason, the air filter automatic cleaning device automatically stores dust adhering to the surface of the air filter in the dust box until the amount of dust accumulated in the dust box reaches a predetermined amount that needs to be discharged. There is a demand for an indoor unit of an air conditioner that can remove dust while removing the dust box from the indoor unit body when it reaches a fixed amount, while being attached to the indoor unit body.

In the present embodiment, a dust removal means for removing dust adhering to the air filter is formed in the indoor unit main body, a suction passage, an air filter, a heat exchanger, an indoor blower, and an air passage that sequentially communicates the blowout port. And an air filter automatic cleaning means configured to contain dust removed by the dust removing means, and the dust box accommodates and removes dust removed by the dust removing means from an opening formed at an upper portion. A side having a discharge nipple at one end in a longitudinal direction communicating with the dust receiving portion of the dust box, and a dust receiving portion to be opened and a movable lid configured to open and close the opening of the dust receiving portion A cover is installed.
On the side of the side cover, a driving force conversion mechanism that urges the movable lid to rotate in a direction that always opens the opening formed in the dust receiving portion of the dust box, and is normally closed by a movable valve. When the movable valve is moved, a duct assembly in which a nozzle insertion hole is formed on the outer surface of the indoor unit main body is connected to the suction path to the dust receiving portion of the dust box via the discharge nipple. ing.
A cleaning nozzle joint is inserted into the nozzle insertion hole of the duct assembly from the outer surface of the indoor unit, and the movable valve is moved by the insertion force so that the suction path of the nozzle insertion hole is communicated, and the driving force conversion mechanism The opening of the dust receiving part of the dust box is closed with the movable lid, a hose of a cleaner is connected to the cleaning nozzle joint, and dust accumulated in the dust box by operation from outside the machine It was made possible to collect by suction.

The figure which shows the state which is sucking the dust which accumulated by connecting the hose of a cleaner to the indoor unit of the air conditioner based on this embodiment. The longitudinal cross-sectional view of the indoor unit of the air conditioner based on the embodiment. The perspective view of the indoor unit of the air conditioner which removed the front panel based on the embodiment. The perspective view which shows the state which removed the side cover which has a discharge nipple in the dust box based on the embodiment. The perspective view which shows the state at the time of normal time, such as the time of an air-conditioning driving | operation and an air-conditioning driving | operation stop, in the dust box based on the embodiment. The perspective view which shows the state when sucking dust from a dust box in the dust box based on the embodiment. The longitudinal cross-sectional view of the dust box based on the embodiment. The figure for demonstrating the inclination state along the longitudinal direction of the movable lid which comprises the dust box based on the embodiment. The external appearance perspective view of the duct assembly connected to the side cover attached to the dust box one side part based on the embodiment. The perspective view which decomposes | disassembles and shows the component part of the duct assembly connected to the side cover attached to the dust box one side part based on the embodiment. The perspective view which shows the state which attached the duct assembly to the side cover attached to the dust box one side part based on the embodiment. The perspective view which shows the position of the nozzle insertion hole provided in the indoor unit main body outer surface based on the embodiment. The external appearance perspective view of the cleaning nozzle joint as an accessory based on the embodiment. The perspective view which shows a part of indoor unit which shows the state which attached the cleaning nozzle joint to the predetermined site | part based on the embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 shows that a remote controller (remote control device, not shown) that transmits an indoor unit and issues an operation command for an air conditioner is provided with means for setting a dust discharge-only mode, which will be described in detail later. While selecting the dedicated mode, the hose H of the vacuum cleaner S is pressed against the nozzle insertion hole formed in the wall-mounted indoor unit K constituting the air conditioner, and dust accumulated in a dust box (to be described later) in the indoor unit K It is a perspective view of the state which is removing from a dust box by inhaling into vacuum cleaner S.

FIG. 2 is a longitudinal sectional view of a wall-mounted indoor unit K that constitutes the air conditioner.
The wall-mounted indoor unit K is generally mounted at a high place on the wall of a living room. The indoor unit main body 1 includes a front panel 2 constituting an outer casing on the front surface, upper surface, lower surface, and both left and right sides, and a rear main body 3 constituting the inside of the front panel 2 and a rear casing.

  The front surface of the front panel 2 and both left and right side portions (not shown) are shielded by the panel. A suction port 5 is opened on the upper surface of the front panel 2, and a frame-like bar is fitted into the suction port 5 and is always open. An opening for the air outlet is formed in the front part of the lower surface of the front panel 2.

  The rear body 3 is provided with a filter frame assembly 6 that supports the air filter F. Furthermore, the heat exchanger 7 and the indoor blower 8 are supported, and the blowout port 9 is provided. By driving the indoor blower 8, the air inlet 10, the air filter F, the heat exchanger 7, the indoor blower 8, and the air outlet 10 are sequentially formed in the indoor unit body 1. .

  The air outlet 9 is provided with an up / down air direction adjusting plate 11b integrally carrying a left / right air direction adjusting plate 11a on the upper surface side. The left and right air direction adjusting plates 11a and the up and down air direction adjusting plates 11b can open and close the air outlet 9 according to the rotation posture, and set the air exchange air blowing direction according to the operating conditions.

  Further, an opening / closing plate 12 is provided between the upper part of the up / down airflow direction adjusting plate 11b and the lower edge of the front plate of the front panel 2. The opening / closing plate 12 closes the surface between the up / down airflow direction adjusting plate 11b and the front panel 2 front plate at the end of the air conditioning operation. However, as shown in FIG. The surface between the front panel 2 and the front plate is opened.

  The heat exchanger 7 is formed in a substantially inverted V shape by a front heat exchanger portion 7A and a rear heat exchanger portion 7B. The front heat exchanger section 7 </ b> A is formed in a curved shape so as to face the suction port 5. The rear heat exchanger portion 7B is straight and obliquely inclined and faces a part of the suction port 5.

  The heat exchanger 7 communicates with a compressor, an outdoor heat exchanger, and the like housed in an outdoor unit (not shown) through a refrigerant pipe, and these constitute a refrigeration cycle. The lower end portion of the front heat exchanger portion 7A is placed on the front drain pan 13a, and the lower end portion of the rear heat exchanger portion 8B is placed on the rear drain pan 13b. The indoor blower 8 is disposed between the front and rear heat exchanger sections 7A and 7B.

  The air conditioner is instructed for operation by a remote controller (not shown) (not shown). This remote control is provided with setting means for a dust discharge only mode. When this dust discharge exclusive mode is set, the indoor fan stops the indoor blower 8 and the vertical airflow direction adjusting plate 11b is displaced in a direction perpendicular (perpendicular) to the blowout streamline to close the blowout opening 9. It is controlled to be in a state.

FIG. 3 is a perspective view of the indoor unit body 1 with the front panel 2 removed.
As shown in FIGS. 2 and 3, the filter frame assembly 6 is configured by superposing a front frame 14a and a rear frame 14b. A partition guide bar is provided between the front frame body 14a and the rear frame body 14b, and a space is provided between the front frame body 14a and the partition guide bar, and between the partition guide bar and the rear frame body 14b. Space is reserved.

  Two air filters F are supported on both the left and right sides of the vertical cross section a at the center of the filter frame assembly 6. Each air filter F is located between the front frame 14a and the partition guide bar in a normal state other than during cleaning of the air filter F, which will be described later, that is, during air conditioning operation and operation stop, and during suction of dust by the cleaner S. The space is accommodated and supported.

  Teeth are continuously provided over the entire length of the back side of the left and right sides of each air filter F to form a timing belt. An air filter feed mechanism 16 (to be described later) of an air filter cleaning device (air filter automatic cleaning means) 15 is connected to the tooth portion.

The air filter cleaning device 15 includes an air filter feed mechanism 16 that is mounted and fixed in the indoor unit body 1, a brush unit 17, and a dust box 18.
The air filter feed mechanism 16 includes an air filter feed gear that meshes with a tooth portion formed on the back surface of the air filter F, and a drive mechanism portion that is coupled to a rotation shaft of the air filter feed gear. When a drive signal is input to the drive mechanism, the air filter feed gear is rotationally driven. At this time, since the air filter feed gear meshes with the teeth of the air filter F, the two air filters F on the left and right are moved simultaneously.

  The brush unit 17 includes a dust lifting brush and a dust removing blade. The air filter feed gear is provided so as to mesh with the tooth portion of the air filter F, while the dust lifting brush is in contact with the back side of the sheet portion formed between the vertical rail portions a of the air filter F. Provided.

  Further, the dust lifting brush has brush hairs planted on the peripheral surface of the cylindrical body. The dust removing blade is provided with a plurality of blade pieces at predetermined intervals in the circumferential direction of the rotating shaft. The blade piece is a thin elastic member (for example, a rubber plate), is spirally bent along the axial direction of the rotation shaft, and is provided on the surface side of the air filter F.

The bristles of the dust lifting brush are planted substantially upright with respect to the rotation axis, and the diameter is smaller than the filter hole diameter of the air filter F. The tip of the bristle is supported through the air filter F so as to come into contact with the tip of the dust removing blade. The rotational speed of the dust removing blade is set faster than the rotational speed of the dust lifting brush.
Although the dust box 18 will be described later, in brief, the dust lifting blade receives the dust scraped off from the dust lifting brush.

Next, the operation of the indoor unit K of the air conditioner configured as described above will be described.
When a signal for starting an air conditioning operation such as a cooling operation or a heating operation enters the control unit from the remote controller, a refrigeration cycle operation is started and a drive signal is sent to the indoor blower 8. Further, the opening / closing plate 12 is rotated, and the vertical air direction adjusting plate 11b is rotated in a posture adapted to the air conditioning operation, so that the air outlet 9 is opened.

  Indoor air is sucked into the indoor unit main body 1 from the suction port 5 and guided along the air blowing path 10. First, the air filter F is circulated, and dust contained in the room air is captured. The filtered and cleaned room air is guided to the front heat exchanger section 7A and the rear heat exchanger section 7B constituting the heat exchanger 7.

  The heat exchanger 7 and the room air exchange heat, and if the cooling operation mode is selected, the room air becomes cool air, and if the heating operation mode is selected, the room air changes to warm air. The heat exchange air is guided along the blowout air passage 10 and is guided from the blowout opening 9 to the left / right airflow direction adjusting plate 11a and the up / down airflow direction adjusting plate 11b to be blown into the room.

When the cool air is blown out into the room, the room temperature is lowered and the air is cooled. When the warm air is blown into the room, the room temperature rises and performs a heating action. In any case, when the indoor air sucked into the indoor unit main body 1 circulates through the air filter F, dust contained in the indoor air is captured, and always cleaned heat exchange air is blown into the room. Clean the room.
If the air filter F is used for a predetermined period of time, dust trapped on the air filter F adheres and the ventilation resistance increases. If left as it is, the heat exchange efficiency is lowered, and the cooling capacity and the heating capacity are affected, and the power consumption is increased.

  Therefore, each time the air-conditioning operation ends, or every time a predetermined period elapses, according to the operation mode set in advance by the air conditioner, or the user is provided on the remote control (remote control device). The air filter automatic cleaning operation is forcibly executed by pressing the “filter cleaning button”.

  That is, a drive signal is sent from the control unit to the air filter feed mechanism 16 of the air filter cleaning device 15 to rotate the air filter feed gear, and the air filter push-up brush and the dust removing blade of the brush unit 17 rotate. Driven. First, the air filter feed gear and the air filter push-up brush rotate counterclockwise from the state shown in FIG.

  Since the tooth portions of the air filter feed gear and the air filter F are meshed with each other, the air filter F is located between the front frame body 14a and the partition guide bar and between the partition guide bar and the rear frame body 14b. Move to. At this time, the bristles of the air filter push-up brush are surely inserted into the filter surface hole of the air filter F.

  The dust adhering to the filter surface hole of the air filter F is pushed up by the bristles of the air filter push-up brush and scraped off by the dust removing blade, thereby being removed from the surface of the air filter F and the dust box 18. It falls inside and accumulates.

  When the air filter F is accommodated in the space between the partition guide bar and the rear frame 14b over the entire length, the control unit sends a stop signal to the air filter feed mechanism 16 and sends a reverse drive signal at the timing. . The air filter F again passes between the air filter push-up brush and the dust removing blade and returns to the original position.

  Also at this time, the dust remaining on the surface of the air filter F is pushed up by the air filter push-up brush and is reliably removed from the surface of the air filter F by the dust removing blade and falls into the dust box 18.

  Eventually, the air filter F is continuously lifted up and down by the air filter push-up brush, and the dust adhering to the filter surface is pushed up and removed by the dust removing blade. With the air filter F returned to its original position, the dust adhering to the air filter F is completely removed, and all of the removed dust is dropped and stored in the dust box 18.

By performing the automatic cleaning operation of the air filter F for a predetermined period, dust in the dust box 18 is accumulated and a predetermined amount is accumulated. At this time, since some notification signal is given to the user, the user needs to discharge the dust inside the dust box 18.
FIG. 4 and subsequent figures show a mechanism that is attached to the dust box 18 and discharges the dust accumulated in the dust box 18 to the vacuum cleaner S.

  That is, FIG. 4 is an external perspective view of a dust box 18 having a dust receiving portion 19 formed therein, and a side cover 20 of the dust box 18 attached to the left and right side portions (left side portion in the present embodiment) of the dust box 18. is there. Note that an opening 21 for allowing dust to fall into the dust receiver 19 is formed at the upper part of the dust receiver 19 of the dust box 18.

  FIG. 9 is an external perspective view of a duct assembly 22 connected in combination with a side cover 20 attached to one side of the dust box 18. FIG. 12 is a view showing the positions of the nozzle insertion holes 23 formed in the duct assembly 22 on the outer surface of the indoor unit main body 1, and are open at the side of the outlet 9.

  FIG. 13 shows the cleaning nozzle joint N to be inserted into the nozzle insertion hole 23, and FIG. 14 shows the state where one end side of the cleaning nozzle joint N is actually inserted into the nozzle insertion hole 23 provided in the indoor unit body 1. It is a perspective view. As shown in FIG. 1 again, the tip of the hose H of the cleaner S is fitted into the other end of the cleaning nozzle joint N, and the cleaner S is turned on to remove dust accumulated in the dust box 18. S can be sucked into S.

Hereinafter, each component will be described in detail.
As shown in FIG. 4, the dust box 18 constitutes a horizontally long container having a length substantially equal to the width of two filters in the left-right width direction. The dust box 18 has a dust receiving portion 19 inside and an opening 21 in the upper portion of the dust receiving portion 19, and the dust box 18 has a movable lid that can open and close the opening 21 above the dust receiving portion 19. 24 is provided.

  A rotating shaft 25 for rotating the movable lid 24 to open and close the opening 21 is provided on one side in the width direction of the dust box 18. The rotating shaft 25 and the movable lid 24 are integrally formed. A spring 27 is interposed on one side in the width direction of the dust box 18 adjacent to the side of the rotating shaft 25, and the movable lid 24 is interposed via the rotating shaft 25 in a direction to open the opening 21 of the dust receiving portion 19. Is elastically biased.

  The side cover 20 includes a connecting port body 28a through which a rotating shaft 25 protruding on one side of the dust box 18 is inserted, and a discharge nipple 28b that communicates with a side opening of the dust receiving portion 19 that is a space in the dust box 18. And is fitted so as to shield the side opening of the dust box 18.

  In FIG. 5, with the side cover 20 attached to the dust box 18, the elastic force of the spring 27 interposed in the dust box 18 acts to rotate the movable lid 24, and the opening 21 of the dust receiving portion 19. It is a perspective view which shows the state which open | released. This is a normal state such as when the air conditioning operation is stopped and when the air conditioning operation is stopped, and dust accumulates from the brush unit 17 through the opening 21 to the dust receiving portion 19.

  In FIG. 6, with the side cover 20 attached to the same dust box 18, the movable lid 24 is rotated against the elastic force of the spring 27 interposed in the dust box 18, and the opening 21 of the dust receiving part 19. It is a perspective view which shows the state which obstruct | occluded. That is, the dust in the dust box 18 is sucked by the cleaner S, and the movable lid 24 is rotated as described later.

  The movable lid 24 is provided with a rectangular intake hole 30 on the side opposite to the side on which the side cover 20 is attached. In the normal state in which the opening 21 of the dust receiving part 19 shown in FIG. 5 is open, the intake hole 30 has no effect, but the opening 21 of the dust receiving part 19 shown in FIG. 6 is closed. At the time of sucking the dust in the state, the air sucked into the dust receiving part 19 from the intake hole 30 passes through the dust receiving part 19 and is sent to the side cover 20 side. In other words, the dust collecting flow path is secured by the presence of the intake holes 30.

  FIG. 7 is a cross-sectional view of the dust box 18 with the side cover 20 attached thereto. FIG. 8 is a plan view for explaining an inclined state of the movable lid 24 with respect to the dust box 18.

  The dust box 18 and the movable lid 24 are long in the left-right direction. While the dust box 18 is fixed in the indoor unit body 1, the movable cover 24 moves so that the rotation shaft 25 can rotate so as to open and close the opening 21 of the dust receiving portion 19 in the dust box 18. The edge of the movable lid 24 that abuts on the inner surface of 18 is formed in the longitudinal direction from the side where the side cover 20 is attached to the side where the intake holes 30 are formed, so that the movable lid 24 closes the opening 21. In addition, when the rotation is performed via the rotation shaft 25 connected to the drive side, a larger gap is generated as the distance between the edge of the movable lid 24 and the inner surface side of the dust box 18 is farther from the rotation shaft 25.

  Therefore, the edge of the movable lid 24 on the side in contact with the inner surface of the dust box 18 is inclined in the longitudinal direction so that the far side from the rotating shaft 25 connected to the driving side is first applied to the dust box 18. Installed.

  In other words, the dust box has a large clearance m between the rotating shaft 25 on the driving side and the inner surface of the dust box 18 and a small clearance between the suction hole 30 on the non-driving side and the inner surface of the dust box 18. A movable lid 24 is attached to 18. Due to the presence of this inclination, it is possible to absorb the deformation of the components and improve the adhesion between the edge of the movable lid 24 and the inner surface of the dust box 18 when the opening 21 of the dust receiving portion 19 of the movable lid 24 is closed.

  A duct assembly 22 shown in FIG. 9 is attached to the side cover 20. The duct assembly 22 is attached to the side cover 20, the first hole 31 combined with the connection port 28 a of the side cover 20, the second hole 32 combined with the discharge nipple 28 b, and the side cover 20. And a nozzle insertion hole 23 that is opened in front of one side of the indoor unit body 1.

FIG. 10 is an exploded perspective view of the components of the duct assembly 22.
The second piece 35 on one side (right side) and the third piece 36 on the other side (left side) are combined with the first piece 34 at the center. Inside, a movable valve 37 and a driving force conversion mechanism 38 that transmits the pivoting operation of the movable valve 37 to the pivot shaft 25 via the connecting port body 28a of the side cover 20 are accommodated.

  The first hole portion 31, the second hole portion 32, and the nozzle insertion hole 23 are all provided in the second piece portion 35. The movable valve 37 is attached to the inner portion of the nozzle insertion hole 23. The movable valve 37 is always elastically biased so as to close the nozzle insertion hole 23 by the elastic body 39. The movable valve 37 is provided in a space portion between the first piece portion 34 and the second piece portion 35.

In the driving force conversion mechanism 38, one end portion of the drive shaft 40 accommodated in the space portion between the first piece portion 34 and the third piece portion 36 has a hole portion 41 that opens in the first piece portion 34. And is fitted into the base end of the movable valve 37.
A driven shaft 42 is connected to the tip of the drive shaft 40, and the tip of the driven shaft 42 is connected to the first piece 34 and the first piece 34 via a space 43 provided in the first piece 34. It is connected to a driven shaft 44 accommodated between the two pieces 35.

  The driven shaft 44 is connected to the movable lid driving shaft 45, and the movable lid driving shaft 45 is pivotally supported by a receiving hole portion 46 provided at the tip of the first piece 34 and the second piece 35. It opposes the 1st hole part 31 provided in this.

FIG. 11 is a diagram for explaining the state of the components when the cleaning nozzle joint N (not shown) is not inserted into the nozzle insertion hole 23. FIG. 12 is a diagram illustrating the position of the nozzle insertion hole 23 provided on the outer surface of the indoor unit body 1.
The cleaning nozzle joint N is prepared as an accessory part separately from the indoor unit main body 1 and is not used at the time of normal air conditioning operation or when the air conditioning operation is stopped, but is stored separately. Therefore, during operation of the air conditioner, the nozzle insertion hole 23 closed by the movable valve 37 installed in the duct assembly 22 is exposed at the side (side) of the outlet 9 of the indoor unit body 1. When the operation of the air conditioner is stopped, the opening / closing plate 12 rotates and closes the nozzle insertion hole 23 together with the outlet 9.

  Here, the color of the movable valve 37 is different from that of the external components around the nozzle insertion hole 23 constituting the indoor unit body 1. By making the color different from the surroundings, the visibility with respect to the movable valve 37 is increased, and the cleaning nozzle joint N can be easily inserted into the nozzle insertion hole 23 later.

  By inserting a cleaning nozzle joint N, which will be described later, into the nozzle insertion hole 23 in the arrow direction, the movable valve 37 that closes the nozzle insertion hole 23 is rotated and displaced in the arrow direction against the elastic force of the elastic body 39. Then, the nozzle insertion hole 23 is opened. At the same time, the driving force conversion mechanism 38 rotates, and the driving shaft 40, the driven shafts 42 and 44, and the movable lid driving shaft 45 rotate.

  By assembling the duct assembly 22 to the side cover 20, the first hole 31 of the duct assembly 22 is fitted to the rotating shaft 25 of the dust box 18 through the connection port body 28 a of the side cover 20. Therefore, when the movable lid drive shaft 45 of the duct assembly 22 is rotated, the movable lid 24 of the dust box 18 is rotated in the arrow direction, and the opening 21 of the dust receiving portion 19 is closed.

FIG. 13 is an external perspective view of the cleaning nozzle joint N. FIG.
The cleaning nozzle joint N is composed of a joint portion Na formed in a tapered shape with a fine step portion, and a guard portion Nb formed in a star shape with a diameter greater than the maximum diameter of the joint portion Na. The application display unit Nc can be narrowed down from the guard unit Nb to the small-diameter shape, and the small-diameter main body insertion portion Nd.

By forming the joint portion Na into a tapered shape, the tip of the hose can be reliably connected to the joint portion Na in any vacuum cleaner S of any manufacturer, and suction is possible.
When the cleaning nozzle joint N is attached to the nozzle insertion hole 23 of the indoor unit body 1 by providing a star-shaped guard portion Nb with a diameter equal to or larger than the maximum diameter of the joint portion Na, the main body of the cleaning nozzle joint N is inserted. Even if the portion Nd is mistakenly inserted into the air outlet 9, the tip of the main body insertion portion Nd does not reach the indoor blower 8.

That is, even if the cleaning nozzle joint N is inserted into the outlet 9, the guard portion Nb is caught and the tip of the main body insertion portion Nd does not reach the blower fan, and the blower fan is not damaged by the main body insertion portion Nd. .
Moreover, since the front can be confirmed at the star-shaped valley portion by making the guard portion Nb into a star shape, the visibility when the user inserts the cleaning nozzle joint N into the indoor unit body 1 is not hindered.

  It is specified in the usage display section Nc that it is a “cleaning nozzle for an air conditioner”. That is, the dust receiving portion 19 of the dust box 18 is full of dust and needs to be discharged depending on the indoor environment and operating conditions, but is usually every 1 to 3 years, and in practice the cooling / heating season It is sufficient to clean only once or twice a year, such as at the beginning or end of.

  For this reason, since the frequency of using the cleaning nozzle joint N is extremely low, it tends to be missing. Therefore, the cleaning nozzle joint N is clearly marked as “a cleaning nozzle for an air conditioner” so that it can be easily understood what parts it is.

  In using the cleaning nozzle joint N, the main body insertion portion Nd having a reduced diameter formed at one end thereof is inserted into the nozzle insertion hole 23. As a result, the movable lid 24 closes the opening 21 of the dust receiving portion 19 as described above, and the suction path R is formed. By reducing the diameter of the main body insertion portion Nd, the nozzle insertion hole 23 provided in the indoor unit main body 1 can be reduced in size.

  By selecting the dust discharge exclusive mode of the remote controller described above, the indoor blower 8 is stopped as shown in FIG. 14, and the up-and-down air direction adjusting plate 11b is displaced in a direction perpendicular (perpendicular) to the streamline and blown out. The mouth 9 is closed. This ensures the safety of the user.

  As shown in FIG. 12, the opening / closing plate 12 is rotated so that the nozzle insertion hole 23 can be seen. In this state, the nozzle insertion hole 23 is closed by the movable valve 37. As shown in FIG. 14, by inserting the main body insertion portion Nd of the cleaning nozzle joint N into a predetermined position (nozzle insertion hole 23) of the indoor unit main body 1, as shown in FIG. The movable valve 37 rotates so as to close the opening 21 of the dust receiver 19.

  Then, as shown in FIG. 1, by inserting the hose H of the cleaner S into the cleaning nozzle joint N and turning on the cleaner S, as shown in FIGS. 9 and 10, the dust receiving portion of the dust box 18. 19, a suction path R communicating with the discharge nipple 28 b of the side cover 20, the second hole portion 32 of the duct assembly 22, and the nozzle insertion hole 23 is formed.

Dust collected in the dust box 18 is guided to the cleaning nozzle joint N through the side cover 20 and the duct assembly 22 and further sucked into the cleaner S.
Particularly in the duct assembly 22, a driving force conversion mechanism 38 that converts the insertion force of the cleaning nozzle joint N into a driving force that rotates the movable lid 24 in the dust box 18 to close the opening 21 of the dust receiving portion 19. Is disposed in a space partitioned from the suction path R.

Therefore, the driving force converting mechanism 38 can prevent contamination from dust as much as possible, and can obtain reliability and space saving. The dust box 18 is formed of a material that allows the inside to be seen through, and has an opening window attached to the indoor unit body 1, so that the state of dust discharge can be observed and a sense of security can be given.
If sufficient discharge is not possible, the user can devise a method for inserting the cleaning nozzle joint N and the like.

  As mentioned above, although this embodiment was described, the above-mentioned embodiment is shown as an example and does not intend limiting the range of embodiment. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  F ... Air filter, 18 ... Dust box, 19 ... Dust receiving part, 15 ... Air filter cleaning device (air filter automatic cleaning means), 24 ... Movable lid, 20 ... Side cover, 38 ... Driving force conversion mechanism, 37 ... Movable valve , R ... suction path, 23 ... nozzle insertion hole, 22 ... duct assembly, N ... cleaning nozzle joint, S ... vacuum cleaner, H ... hose, 30 ... air intake hole, 11b ... vertical air direction adjusting plate, 12 ... opening / closing plate.

Claims (5)

In the indoor unit body, a suction passage, an air filter, a heat exchanger, an indoor blower, and an air passage that sequentially communicates the blowout port are formed,
An indoor unit of an air conditioner including an air filter automatic cleaning unit configured by a dust removing unit that removes dust attached to the air filter, and a dust box that accommodates the dust removed by the dust removing unit,
The dust box includes a dust receiving portion that receives and accumulates dust removed by the dust removing means from an opening formed at an upper portion thereof, and a movable lid configured to open and close the opening of the dust receiving portion. A side cover having a discharge nipple is attached to one end in the longitudinal direction communicating with the dust receiving portion of the dust box,
On the side of the side cover, a driving force conversion mechanism that urges the movable lid to rotate in a direction that always opens the opening formed in the dust receiving portion of the dust box, and is normally closed by a movable valve. And connecting the duct assembly in which the nozzle insertion hole is formed on the outer surface of the indoor unit body through which the suction path to the dust receiving part of the dust box is communicated via the discharge nipple by moving the movable valve,
A cleaning nozzle joint is inserted into the nozzle insertion hole of the duct assembly from the outer surface of the indoor unit, and the movable valve is moved by the insertion force so that the suction path of the nozzle insertion hole is communicated, and the driving force conversion is performed. Actuating a mechanism to close the opening of the dust receiving portion of the dust box with the movable lid,
An indoor unit of an air conditioner, wherein a vacuum cleaner hose is connected to the cleaning nozzle joint so that dust collected in the dust box can be sucked and collected by an operation from outside the machine. 2. The movable lid that is provided in the dust box and opens and closes the opening of the dust receiving portion is provided with an intake hole on a side opposite to a side on which the side cover is attached. The indoor unit of the described air conditioner. The indoor unit of an air conditioner according to claim 1, wherein the color of the movable valve that opens and closes the nozzle insertion hole is different from the appearance parts around the nozzle insertion hole of the front panel. The air outlet is equipped with an up / down air direction adjusting plate, the indoor blower is stopped, and the up / down air direction adjusting plate is displaced in a direction substantially perpendicular to the air flow line to control the state where the air outlet is closed. The indoor unit of an air conditioner according to claim 1, further comprising a mode. The connection side with the vacuum cleaner in the cleaning nozzle joint has a taper, the connection side with the indoor unit body is thinner than the smallest diameter on the connection side with the vacuum cleaner, and is a cleaning nozzle for an air conditioner. The indoor unit for an air conditioner according to claim 1, wherein the indoor unit is specified.

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