JP2013148233A - Indoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner in which a dust box can be easily removed and the dust box can be surely fixed to an indoor unit body without being conscious of attachment and fixation to the indoor unit, the attachment/detachment workability of the dust box is simplified and the stability of dust scraping performance is attained.SOLUTION: An air filter for filtrating indoor air sucked from a suction port is provided in the upstream side of a ventilation trunk of an indoor heat exchanger in an indoor unit body and an air filter cleaning device for removing dust deposited on the air filter is provided. The air filter cleaning device includes: a cleaning unit body comprising an air filter feed means and a dust scraping means; and a dust box housing the scraped dust by the dust scraping means of the cleaning device. The dust box includes a shaft part, a grip part and a fixation member, is freely detachably attached to the cleaning unit body by fitting the shaft part into an engage part of the air filter and being rotated around the shaft part as a center axis to be pushed and has a wave-like lock operation part forming a lock state by a movement operation of the fixation member.

Description

  Embodiments described herein relate generally to an air conditioner indoor unit including an air filter cleaning device.

  The indoor unit of the air conditioner includes an air filter on the upstream side of the ventilation path of the indoor heat exchanger accommodated in the indoor unit main body, and filters the purified indoor air by filtering the indoor air sucked into the main body. Lead to heat exchanger. The dust is captured by the air filter, and dust accumulates on the air filter over a long period of use, and clogging progresses.

  If it continues using in this state, the air volume introduce | transduced into an indoor heat exchanger will reduce by the adhering dust, and an air-conditioning capability will fall. The user needs to remove the air filter at appropriate intervals and remove dust from the air filter. However, since this operation is laborious and cumbersome, the air filter is often performed as it is without removing the air filter.

  In order to cope with this, as shown in, for example, [Patent Document 1], an air conditioner including an air filter cleaning device has been developed. This air filter cleaning device includes a spiral blade that scrapes off dust on the surface of the air filter, and a dust box that houses the scraped dust.

JP 2011-21802 A2

  As a result, the air filter is always free from clogging, and an efficient air-conditioning operation can be obtained over a long period of time, and the user does not need to clean the air filter, thereby reducing handling.

  By the way, the dust that has been scraped off accumulates in the dust box, and the dust in the dust box becomes full after a predetermined period. At this time, since the indoor unit main body notifies the user by some means, the user needs to immediately remove the dust box from the indoor unit main body by the following procedure.

  In the case of the above-mentioned patent document, the suction grill attached to the front surface of the indoor unit main body is opened, and the fixing unit is operated to unlock the dust box together with the cleaning unit body. Next, the cleaning unit body is left, the dust box is removed from the indoor unit main body, and the dust accumulated inside at another position is removed.

  To attach to the indoor unit body, hold down the entire dust box and integrate the dust box and the cleaning unit. Next, the dust box is fixed to a predetermined portion of the indoor unit body by operating the fixing tool while maintaining the state.

  Therefore, when attaching / removing the dust box, it is necessary to perform the above-described operation accurately. In addition, if the fixture is not securely locked, a gap may be generated between the indoor unit body and the dust box, and dust may leak from the dust box, or a problem may occur that the cleaning unit body does not operate normally. There is.

  Therefore, in order to make sure that the dust box can be attached and removed, please explain it to the user such as sticking the operation manual on the inside of the indoor unit or referring to the attached instruction manual. It was.

  In this embodiment, when attaching and fixing the dust box to the indoor unit main body, it is possible to reliably attach and detach without looking at the instruction manual by making it a structure that can be fixed securely without being aware of it, An object of the present invention is to provide an indoor unit for an air conditioner that can simplify the detachability of the dust box and can stabilize the dust scraping performance.

In the indoor unit of the air conditioner in the present embodiment, the indoor heat exchanger and the indoor blower are arranged in the ventilation path that communicates the suction port and the blowout port provided in the indoor unit body.
An air filter that filters indoor air sucked from the suction port on the upstream side of the ventilation path of the indoor heat exchanger in the indoor unit main body, an air filter support frame that supports the air filter on the front side of the indoor heat exchanger, An air filter cleaning device that removes dust adhering to the air filter and cleans it is provided below the air filter support frame.
An air filter cleaning device includes: a cleaning unit body including an air filter feeding unit that moves the air filter in a predetermined direction; and a dust scraping unit that removes dust adhering to the air filter; and a dust scraping unit for the cleaning unit body It has a dust box that accommodates dust that has been scraped off.
The dust box includes a shaft portion provided at the upper portion, a handle portion provided at the left and right side portions, and a belt-like fixing member that is provided at a substantially central portion in the vertical direction and is movably attached in the horizontal direction.
The dust box is fitted into a hooking portion provided on the air filter support frame via a shaft portion, and is detachably attached to the cleaning unit body by being pushed in while rotating about the shaft portion as a central axis.
Further, the dust box has a corrugated lock operation portion having a configuration in which the lock state is set by moving the fixing member.

The longitudinal cross-sectional view of the indoor unit of the air conditioner based on 1st Embodiment. The perspective view of the state which open | released the suction grill of the indoor unit based on the embodiment. The perspective view which opened the suction grille and expanded the principal part based on the embodiment. The perspective view of the dust box based on the embodiment. The partial cross-sectional top view which follows the LL line | wire of FIG. 1 based on the embodiment. The partial front view of the dust box which locked the fixing member based on 2nd Embodiment, and the partial front view of the dust box which cancel | released locking of the fixing member. The perspective view of the state which decomposed | disassembled the fixing tool and the alerting | reporting part (seal) from the dust box based on the embodiment. The perspective view of the cleaning unit body and dust box based on 3rd Embodiment. The longitudinal cross-sectional view of the state which incorporated the dust box in the cleaning unit body based on the embodiment. The side view which made a part of indoor unit of the air conditioner based on the embodiment into the longitudinal cross section.

Hereinafter, a first embodiment will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view schematically showing an indoor unit of an air conditioner in an operation stop state. (Note that parts that are not labeled in the description are not shown. Some parts are not marked even if they are shown. The same applies hereinafter).
The indoor unit main body 1 includes a front panel 2 constituting a front surface, an upper surface, and left and right side housings, and a rear main body 3 constituting a rear surface and a part of the front surface. The front view of the indoor unit main body 1 has a dimension in the left-right width direction that is larger than the dimension in the vertical direction, and is formed in a horizontally long shape as a whole.

  A suction port 5 is provided in the upper surface portion of the front panel 2, and the upper surface portion provided with the suction port 5 and the front surface portion made of a plate body are integrated and opened and closed with the rear end of the upper surface portion as a pivot portion. A panel 2A is provided. Normally, the opening / closing panel 2A is closed as shown in FIG. 1, but at the time of maintenance, the interior of the indoor unit body 1 can be exposed by opening the opening / closing panel 2A as described later.

  A blowout port 6 is provided in the lower surface portion of the front panel 2, and blowout louvers 7 a and 7 b are provided side by side in the blowout port 6. These blowout louvers 7a and 7b are controlled so as to open and close the blowout opening 6 in response to an operation / stop signal transmitted from a remote control (remote control), and to have different opening angles depending on the type of operation selected.

  A suction port 5 is opened on the upper surface of the front panel 2, and an air filter guide port 8 is formed in a part of the suction port 5. The air filter guide port 8 is formed on the front side in the suction port 5.

  A frame-like bar that partitions into a plurality of spaces is fitted into the suction port 5. The air filter guide port 8 formed in the suction port 5 is formed such that the horizontal width direction dimension is substantially the same as the horizontal width direction dimension of the suction port 5, and the front-rear direction dimension is very small. There are no crosspieces in the space. The suction port 5 and the air filter guide port 8 are always open.

  An indoor heat exchanger 10 and an indoor blower 11 are attached to the rear body 3, and an air filter support frame W that supports the air filter F is attached to the front side of the indoor heat exchanger 10. The front panel 2 is mounted from the outside of the air filter support frame W, and the indoor unit main body 1 is configured.

  In the indoor unit main body 1, an air blow path R that connects the suction port 5 and the blowout port 6 is formed by operating the indoor blower 11, and the air filter support frame W and the indoor heat exchange are formed in the air flow path R. The device 10 and the indoor blower 11 are sequentially arranged.

  The indoor heat exchanger 10 is formed in a substantially inverted V shape by a front heat exchanger portion 10A and a rear heat exchanger portion 10B. The front heat exchanger portion 10 </ b> A is formed in a curved shape so as to face the front surface portion of the front panel 2 and the upper surface portion including the suction port 5 through the air filter F. The rear heat exchanger section 10 </ b> B is straight and obliquely inclined, and is opposed to a part of the suction port 5 through the air filter F.

The indoor heat exchanger 10 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 indoor blower 11 is disposed between the front and rear heat exchanger sections 10A and 10B of the indoor heat exchanger 10, and is disposed in a space at one end of the indoor unit body 1, and a rotation shaft of the fan motor. And a cross-flow fan connected to. The length of the cross flow fan in the axial direction is set to be approximately the same as the length of the indoor heat exchanger 10 in the width direction, and is arranged so as to face each other.

  The lower end portion of the front heat exchanger portion 10A is disposed on the front drain pan 12a, and the lower end portion of the rear heat exchanger portion 10B is disposed on the rear drain pan 12b. The front and rear drain pans 12a and 12b are formed in the rear main body 3, respectively, and drain water dripped from the front and rear heat exchanger portions 10A and 10B can be received and drained to the outside through a drain hose (not shown). ing.

  The front and rear drain pans 12a and 12b have partial outer wall surfaces that are provided close to the indoor blower 11, and constitute a nose for the crossflow fan of the indoor blower 11. By driving the indoor blower 11, the space from the nose to the blowout port 6 is the blowout side in the ventilation path R, and the space from the suction port 5 to the indoor heat exchanger 10 is the suction side in the ventilation path R.

  The air filter support frame W faces the front portion of the front panel 2 and is bent with a gap from the front heat exchanger portion 10A. Furthermore, it faces the suction port 5 on the upper surface portion of the front panel 2 and is bent with a gap from the upper surface of the rear heat exchanger portion 10B. The air filter F supported by the air filter support frame W also has a curved shape similar to that of the air filter support frame W.

  An air filter cleaning device S is provided at the lower end of the air filter support frame W. With the front panel 2 attached, the air filter cleaning device S is shielded by the open / close panel 2A and cannot be seen from the outside.

  The air filter support frame W is a combination of a front frame 14a and a rear frame 14b in which a plurality of vertical beams and horizontal beams are assembled in parallel at a predetermined interval, and the front frame 14a and the rear frame 14b are combined. A partition guide bar 14c is provided between the vertical bars. A total of two air filters F are supported on both the left and right sides of the vertical beam at the center of the air filter support frame W.

  Further, the air filter support frame W is gently curved upward with its lower end portion placed on the upper front end and the rear upper end of the air filter cleaning device S. And it extends along the space space between the suction inlet 5 and the indoor heat exchanger 10 upper end, and the front-end | tip part contacts the back side board part of the rear main body 3. FIG.

An opening a is provided at a position facing the air filter guide port 8 provided on the upper surface of the indoor unit main body 1 of the front frame body 14a, and the opening a is substantially the same shape and dimension as the air filter guide port 8. Is opened.
A portion of the rear frame 14b facing the opening a of the front frame 14a is missing, and the movable guide K is provided here. The movable guide K is rotatably supported by a support shaft provided across the vertical rails on the left and right sides of the air filter support frame W and the vertical rail at the center.

  The upper end of the partition guide bar 14c extends to the vicinity of the movable guide K, and the partition guide bar 14c does not intervene from here to the front ends of the front and rear frame bodies 14a, 14b, and the front frame body 14a and the rear surface. Spatial space is secured by the frame body 14b.

  In the air filter support frame W, the space between the front frame body 14a and the partition guide bar 14c from the connecting portion with the air filter cleaning device S to the opening a, and the rear side plate portion of the rear body 3 from the opening a. The first guide path G1 is formed by the space between the front frame body 14a and the rear frame body 14b up to the contacting tip.

  Furthermore, the space between the rear frame 14b and the partition guide bar 14c from the connecting portion to the air filter cleaning device S to the movable guide K, the first guide path G1 from the movable guide K, and the opening a A second guide path G2 is formed as a path reaching the upper part of the upper surface of the indoor unit body 1 through the air filter guide port 8.

  When the air filter cleaning device S acts, the air filter F accommodated in the first guide path G1 passes through the air filter cleaning device S and is further urged to move along the second guide path G2. It is like that.

  In the air filter F, a plurality of vertical beam portions and horizontal beam portions are spanned around a rectangular peripheral frame at a predetermined interval, and between these peripheral frames and the vertical beam portion and the horizontal beam portion, An extremely thin sheet portion is provided integrally. The seat portion is provided with air holes of a size that allows air to flow and traps dust contained in the air, and is substantially a filter portion.

  On the back side of the vertical beam portion constituting the air filter F, tooth portions are continuously provided over the entire length, forming a timing belt shape. Since the vertical beam portion is provided from the lower end portion to the upper end portion of the air filter F, the air filter F is supported so as to be movable in the vertical direction.

Next, the air filter cleaning device S will be described in detail.
FIG. 2 is a perspective view of the indoor unit in which the open / close panel 2A is opened when the same air-conditioning operation is stopped. FIG. 3 is an enlarged perspective view of a part of FIG. FIG. 4 is a front view of the dust box 30. FIG. 5 is a partially cross-sectional top view along the line LL in FIG. 1, and in the state where the dust box 30 is combined with the cleaning unit body 20, the upper side of the figure is the actual front part, and the lower side of the figure is the actual side. It is the rear part. The above will be described with reference to FIG.

  The air filter cleaning device S includes a cleaning unit body 20 attached to the lower end portion of the air filter support frame W, and a dust box 30 detachably attached to the air filter support frame W at a lower portion of the cleaning unit body 20. .

  For example, at the time of maintenance work, as shown in FIG. 2, the open / close panel 2A constituting a part of the front panel 2 is opened. Then, the front part in the indoor unit main body 1 covered with the open / close panel 2A is opened, and the dust box 30 constituting the air filter cleaning device S and the air filter F attached to the air filter support frame W can be seen.

  The cleaning unit body 20 includes a first rotation shaft provided with a feed gear and a dust push-up brush 22A on a unit frame (casing) 21, and a second rotation shaft provided with a dust scraping blade 22B. I have. The dust lifting brush 22A and the dust scraping blade 22B constitute the dust scraping means 22.

  A feed gear provided on the first rotating shaft meshes with a tooth portion of the air filter F, and the first rotating shaft is connected to a drive motor. The second rotating shaft is connected to another drive motor. The feed gear, the first rotary shaft, and the drive motor constitute the air filter feed means 23.

  The dust raising brush 22A has brush hairs planted on the peripheral surface of a cylindrical body, each brush hair is substantially upright with respect to the axis of the first rotating shaft, and the diameter thereof is the size of the vent hole of the air filter F. The thinner one is selected. Actually, the tip of the brush bristles of the dust push-up brush 22A is assembled so as to be inserted into the sheet portion (filter portion) of the air filter F.

  The dust scraping blade 22B is composed of a plurality of blade pieces that are spaced in the circumferential direction of the second rotation shaft and spirally bent along the axial direction of the second rotation shaft. For these blade pieces, thin elastic members (for example, rubber materials) are used.

  The unit frame 21 includes a first rotating shaft and a second rotating shaft that are parallel to each other. Accordingly, the dust lifting brush 22A provided on the first rotating shaft and the dust scraping blade 22B provided on the second rotating shaft are parallel to each other, and the tip of the dust lifting brush 22A and the tip of the dust scraping blade 22B are parallel to each other. Are attached in sliding contact with each other.

  Most of the dust box 30 is made of a transparent synthetic resin material (for example, an acrylic plate). The inside of the dust box 30 is visible from the outside, and the amount of dust contained is known. A dust collection portion, which is a sufficient space for accommodating dust, is formed at a portion facing the lower side of the dust scraping blade 22B.

  As shown in FIG. 4, a shaft portion 31 is provided at both the left and right end portions and the substantially central portion at the upper end portion of the dust box 30. These shaft portions 31 are detachably fitted into hook portions provided on the air filter support frame W.

  As shown in FIG. 3 and FIG. 4, a grip portion 32 is provided at one of the left and right end portions or the left and right end portions of the dust box 30. The dust box 30 can be easily detached from the air filter support frame W by pulling the dust box 30 attached to the air filter support frame W to the front side with the handle portion 32.

  Band-shaped fixing members 33 </ b> A and 33 </ b> B are provided at substantially the center in the vertical direction of the dust box 30. There are two fixing members 33A and 33B on the right and left sides of the dust box 30 in the left-right width direction, and the fixing members 33A and 33B are attached so as to be movable in the left-right direction from the substantially center portion.

  At the right end of the right fixing member 33A and the left end of the left fixing member 33B, a corrugated lock operating portion 35 in which fine irregularities are continuous in a direction orthogonal to the moving direction is provided. By pushing the lock operation part 35, the dust box 30 is pivoted and pushed into the predetermined part of the cleaning unit body 20 with the shaft part 31 as a fulcrum.

  Further, by moving the lock operation unit 35 to the left and right while maintaining this state, the left and right fixing members 33A and 33B can be moved to the left and right. Moreover, since the lock operating portion 35 is formed in a corrugated shape in which fine irregularities are continuous in a direction orthogonal to the moving direction, it is prevented from slipping during operation, and the moving operation can be easily performed.

  In particular, as shown in FIG. 5, a substantially L-shaped hook fixing portion d is provided on the back side of the right end portion, the central portion, and the left end portion of the right fixing member 33A. With the dust box 30 attached to a predetermined portion, the hook fixing portion d is inserted into the hole e provided in the air filter support frame W. The left fixing member 33B is also symmetrically provided with a hook fixing portion and inserted into the hole e of the air filter support frame W.

  By moving the lock operation part 35 provided on the right side fixing member 33A to the right, the hook fixing part d is engaged with the peripheral part of the hole e. By operating the lock operation portion 35 provided on the left side fixing member 33B to move leftward, the hook fixing portion d is engaged with the peripheral portion of the hole e.

  Therefore, the dust box 30 is securely locked (fixed) to the air filter support frame W. From this state, the right fixing member 33A is urged to move to the left and the left fixing member 33B is urged to move to the right, so that the hook fixing part d is separated from the peripheral part of the hole e, and the dust box 30 The lock on the air filter support frame W is released.

  In particular, as shown in an enlarged view in FIG. 3, two key pictograms b and c are drawn on the upper transparent portion of the right fixing member 33A. This means that in the right fixing member 33A, the dust box 30 can be locked (fixed) b by moving to the right, and unlocked by moving to the left.

  As schematically shown in FIGS. 2 and 4, two key pictograms b and c are similarly drawn on the upper transparent portion of the left fixing member 33B. The dust box 30 can be locked (fixed) by moving the fixing member 33B in the left direction, and unlocked by moving the fixing member 33B in the right direction.

  As shown in FIG. 3 (FIG. 4), a confirmation window 37 is provided in a part of the right fixing member 33A. A confirmation window 37 is also provided on a part of the left fixing member 33B. Then, the notification unit 38 is exposed from the confirmation window 37. The notification unit 38 changes when the dust box 30 is in the locked position and when the dust box 30 is unlocked.

Next, the operation of the indoor unit 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, a drive signal is sent to a compressor disposed in the outdoor unit to start a refrigeration cycle operation. At the same time, a drive signal is sent to the indoor blower 11. Sent.

  Indoor air is sucked into the indoor unit main body 1 from the suction port 5 and guided along the ventilation path R on the suction side. 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 10A and the rear heat exchanger section 10B constituting the indoor heat exchanger 10.

  The indoor heat exchanger 10 and 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 ventilation path R on the blow-out side, and is guided from the blow-out port 6 to the blow-out louvers 7a and 7b and blown out 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 body 1 circulates through the air filter F, dust contained in the indoor air is captured, and the cleaned heat exchange air is always blown into the room, Clean the room.

  Over a long period of use, dust trapped in the air filter F accumulates and clogging occurs. If left as it is, the heat exchange efficiency is lowered, and the cooling capacity and the heating capacity are adversely affected. Therefore, the user presses the “cleaning button” provided on the remote controller before or after the air conditioning operation.

  When this signal enters the control unit, a drive signal is sent to the drive motor of the air filter cleaning device S, the first rotary shaft is driven to rotate, and the feed gear and the dust push-up brush 22A are integrally rotated counterclockwise. While rotating, the second rotating shaft is driven to rotate, and the dust scraping blade 22B is driven to rotate in the clockwise direction.

  The air filter F having a tooth portion meshing with the feed gear is urged to move so as to come into contact with the dust push-up brush 22A from the lower end portion. The brush bristles of the dust push-up brush 22A are inserted into the ventilation holes of the air filter F and push up the dust that has been clogged here. That is, dust is pushed out to the primary side which is the heat exchange air introduction side by the brush bristles.

Further, as the feed gear rotates, the air filter F is guided from the lower end portion to the sliding contact portion between the dust push-up brush 22A and the dust scraping blade 22B and passes therethrough. At this time, the dust pushed up to the primary side of the air filter F by the dust push-up brush 22A is efficiently scraped off by the dust scraping blade 22B arranged on the primary side.
The dust scraped off by the dust scraping blade 22 </ b> B collects in the dust collecting portion in the dust box 30.

  During such an air filter cleaning operation, the air filter F makes a U-turn from the lower end and passes through the air filter cleaning device S. Further, the air filter F moves upward in the second guide path G2 with the lower end portion so far as the tip, and the tip portion contacts the movable guide K.

The movable guide K rotates counterclockwise about the rotation fulcrum and blocks the first guide path G1, while opening the second guide path G2. The air filter F passes through the intersection intersecting the first guide path G1 and is guided in the direction of the opening a, passes through the opening a, and protrudes from the air filter guide port 8 of the indoor unit body 1 to the upper surface. .
This state continues until the rear end portion of the air filter F completely passes through the sliding contact portion between the dust push-up brush 22A and the dust scraping blade 22B.

  When the rear end portion of the air filter F passes through the portion, the cleaning operation for the air filter F of the air filter cleaning device S is temporarily ended. This is detected by detecting the rotational state of the sensor or motor, and a signal is sent to the control unit to stop the rotation of the first rotating shaft and the second rotating shaft.

The feed gear, dust push-up brush 22A and dust scraping blade 22B stop rotating. A part of the air filter F stops in a state of protruding from the upper surface portion of the indoor unit main body 1, and drying of a large area of the air filter F is promoted.
A user who has selected cleaning of the air filter F can visually check that a part of the air filter F protrudes from the upper surface of the indoor unit body 1 and can confirm that the air filter F is being cleaned.

After this state is continued for a certain time with respect to the air filter F, a reverse drive signal is sent to the drive motor to move and energize the air filter F again, and the second guide path G2 to the original first guide path Return to the position in G1.
Even when the next air-conditioning operation is started, the air filter F is completely dried, so that dust does not stick to it and a filtering effect can be secured over a long period of time. And the dust which has adhered can be easily removed at the time of the cleaning of the air filter F again.

  When such a cleaning operation of the air filter F is performed a plurality of times, dust accumulates in the dust box 30. When a predetermined amount of dust has accumulated, this is detected by a sensor, or a signal is sent to the control unit because it has been operating for a predetermined time, and the control unit notifies the user of dust discharge. The user opens the open / close panel 2 </ b> A to expose the dust box 30.

  Next, the fingers of the left and right hands are applied to the lock operation portions 35 of the fixing members 33A and 33B on the left and right sides, and are moved and urged toward the inside (substantially central portion). In this state, the hook fixing portion d provided on the back surface of the fixing members 33A and 33B is separated from the peripheral portion of the hole e of the air filter support frame W.

Furthermore, it has the handle part 32 provided in the one-side edge part of right and left of the dust box 30, or both right-and-left both edge parts, and pulls it toward this side. The shaft portion 31 of the dust box 30 is detached from the engaging portion of the air filter support frame W, and the dust box 30 can be removed. In this manner, the dust box 30 can be removed from the indoor unit body 1 very easily.
Thereafter, the dust box 30 is brought to another part to remove dust accumulated in the dust collecting part.

  In order to attach the cleaned dust box 30 to the indoor unit body 1 again, the shaft portion 31 of the dust box 30 is fitted into the left and right and center grooves of the air filter support frame W with the hooking portion, and is rotated around the shaft portion 31 as the central axis. The lower part of the front surface of the dust box 30 is pushed in so that the dust box 30 is accommodated in the indoor unit body 1 while moving. At that time, a “click” sound is emitted, and it can be confirmed that the engagement has been made.

  Next, the lock operation part 35 provided in the right-and-left end part of right-and-left fixing member 33A, 33B is pushed. The dust box 30 rotates around the shaft portion 31 as a fulcrum, and is attached to a predetermined portion of the cleaning unit body 20. At the same time, the hook fixing portions d provided on the back surfaces of the fixing members 33A and 33B on the right and left sides of the dust box 30 are inserted into the holes e of the air filter support frame W.

  Thereafter, the lock operation unit 35 is pushed and moved to the left and right outside. The hook fixing portion d of the fixing members 33A and 33B is engaged with the peripheral portion of the hole e of the air filter support frame W, and is locked. Therefore, the dust box 30 and the cleaning unit body 20 are integrated and securely fixed to the air filter support frame W by an extremely easy operation, and the attachment is completed.

In summary, in the air filter cleaning device S, the dust removed by the cleaning unit body 20 from the air filter F is accommodated in the dust box 30, thereby reducing the user's trouble.
However, in any case, the dust accommodated in the dust box 30 exceeds the permissible storage amount. Therefore, the dust in the dust box 30 must be removed by removing it from the indoor unit body 1.

  According to the present embodiment, the dust box 30 is detachably fixed to the air filter support frame W by the fixing members 33A and 33B. The fixing members 33A and 33B are moved in the longitudinal direction, but have a wave-like lock operating portion 35 in a direction orthogonal to the moving direction, and prevent slipping during the moving operation.

  Therefore, the user can move the dust box 30 to the fixed position by natural operation even if the user is not conscious of fitting the dust box 30 into the mounting position of the air filter support frame W. It is easy to remove and attach and detach, making it easier for users to maintain.

Next, a second embodiment will be described based on FIGS. 6 (A) and 6 (B) and FIG.
6A is a front view of the right half from the substantially center portion of the dust box 30, and FIG. 6B is a front view of the right half from the substantially center portion of the dust box 30 in a state different from FIG. 6A. FIG. FIG. 7 is an exploded perspective view showing one fixing member 33 </ b> A and the seal member 40 from a part of the dust box 30.

  As described above, the confirmation window 37 is provided in a part of the left and right fixing members 33A and 33B. When the dust box 30 is in the locked position via the fixing members 33A and 33B and in the position where the dust box 30 is unlocked, the notification portion 38A is changed in the portion visible from the confirmation window 37 so that the state of the dust box 30 is easy. Can be confirmed.

  Here, in order to make it easy to confirm the amount of dust contained in the dust box 30, the dust box 30 is a transparent member. In addition, the fixing members 33 </ b> A and 33 </ b> B are colored members such as “orange” so that the fixing members are extremely conspicuous with respect to the dust box 30. At the same time, the lock operation portions 35 provided at both end portions are easily noticeable and can be reliably operated.

Further, a colored sticker 38A is attached as a notification portion at a position corresponding to a portion exposed from the confirmation window 37 accompanying the movement operation of the fixing members 33A and 33B.
The colored seal 38A is exposed from the confirmation window 37 when the dust box 30 is in the locked position and when it is in the unlocked position by moving the fixing members 33A and 33B. It is a different color from the case where it exists.

  For example, the color portion of the colored seal 38A exposed from the confirmation window 37 when the dust box 30 is slid to the lock position is set to “orange”, which is the same as the fixing members 33A and 33B. Further, when the dust box 30 is moved to the unlock position, the color portion of the colored seal 38A exposed from the confirmation window 37 is set to “blue”, which is the opposite color to orange, the positions of the fixing members 33A and 33B. Confirmation can be performed very easily, and detachability is improved.

  In addition to attaching the colored seal 38A as a notification unit, a notification unit in which two color portions or different patterns are printed directly on the dust box 30 may be provided. This saves the trouble of manufacturing the colored seal 38A and the trouble of sticking it, and can be provided at low cost.

Next, a third embodiment will be described with reference to FIGS.
FIG. 8 is an exploded perspective view showing the cleaning unit body 20 and the dust box 30. FIG. 9 is a longitudinal sectional view of the assembled state of the cleaning unit body 20 and the dust box 30. FIG. 10 is a longitudinal sectional view in which a part of the indoor unit body 1 is omitted.

As shown in FIG. 8, a temporarily fixing claw portion 50 is provided integrally with the dust box 30 at a substantially intermediate portion in the left-right width direction at the rear side end portion of the dust box 30. The number of the temporary fastening claws 50 is not limited to one, and may be provided at both left and right ends.
As described above, after dust contained in the dust box 30 is removed, the shaft portion 31 of the dust box 30 is fitted into the engaging portion of the air filter support frame W, and the lock operation portion 35 of the fixing members 33A and 33B is pushed in.

The dust box 30 rotates with the shaft portion 31 as a fulcrum. At this time, as shown in FIG. 9, a temporary claw stopper claw portion 50 newly provided in the dust box 30 is engaged with the end portion of the cleaning unit body 20.
Therefore, the dust box 30 does not float from the cleaning unit body 20, and the reliability of the subsequent operation of the fixing members 33A and 33B increases. Even if the fixing operation with respect to the fixing members 33A and 33B is forgotten, it is possible to reliably prevent the occurrence of an abnormality such that the dust box 30 is entangled with the air filter F during dust removal.

  The embodiment described above is not limited to the above-described embodiment as it is, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

  DESCRIPTION OF SYMBOLS 5 ... Suction port, 6 ... Outlet, R ... Ventilation path, 10 ... Indoor heat exchanger, 11 ... Indoor fan, 1 ... Indoor unit main body, F ... Air filter, S ... Air filter cleaning device, 23 ... Air filter feed Means, 22 ... dust scraping means, 20 ... cleaning unit body, 30 ... dust box, 33A, 33B ... fixing member, 35 ... lock operation part, 38 ... notification part, 50 ... temporary fixing claw part.

Claims (4)

An indoor unit main body in which an indoor heat exchanger and an indoor blower are arranged in a ventilation path communicating with the suction port and the blowout port;
An air filter that is provided on the upstream side of the ventilation path of the indoor heat exchanger in the indoor unit main body, and filters indoor air sucked from the suction port;
An air filter support frame that is attached to the front side of the indoor heat exchanger and supports an air filter;
An air filter cleaning device that is provided at a lower portion of the air filter support frame and removes dust adhering to the air filter and cleans it;
The air filter cleaning device includes:
A cleaning unit body comprising air filter feeding means for moving the air filter in a predetermined direction, and dust scraping means for removing dust adhering to the air filter with respect to the air filter moved by the air filter feeding means;
A dust box for storing dust scraped off by the dust scraping means of the cleaning unit body,
The dust box includes a shaft portion provided at an upper portion, a handle portion provided at a left and right side portion, and a belt-like fixing member that is provided at a substantially central portion in the vertical direction and is movably attached in the left and right directions. It is fitted to a hooking portion provided on the air filter support frame via, and is detachably attached to the cleaning unit body by being pushed while rotating about the shaft portion as a central axis, and the operation of moving the fixing member Thus, an air conditioner indoor unit having a wave-like lock operation unit having a configuration in a locked state. Furthermore, a confirmation window is opened in the fixing member,
Different notification parts are provided on the surface of the dust box in the moving direction of the fixing member,
The indoor unit for an air conditioner according to claim 1, wherein any one of the notification parts is exposed from the confirmation window in accordance with a movement position of the fixing member by the lock operation part. The different notification parts are formed in different patterns or different colors when the fixing member moves the dust box to the lock position and moves to the lock release position. The indoor unit of the air conditioner according to 2. The indoor unit of an air conditioner according to claim 1, wherein the dust box has a temporarily fixing claw portion that is temporarily fixed to the cleaning unit body by moving to the lock position.

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