JP2013130339A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner including a filter cleaning mechanism wherein an air filter can be positioned without any positional deviation and a stopper does not influence movement of the air filter.SOLUTION: In an air conditioner 1 including a filter cleaning mechanism 12, a stopper 50 protruded to a filter moving route 26 by a spring force and engaged with an engagement part 11B of an air filter 11 on a protruded position to fix a tip position of the air filter 11 is arranged at a predetermined position along the filter moving route 26. When a dust box 32 is attached, the stopper 50 is retreated from the filter moving route 26 against the spring force through a stopper release part 32B attached to the dust box 32 of the filter cleaning mechanism 12, and when the dust box 32 is detached, the stopper 50 can be protruded to the filter moving route 26 by the spring force.

Description

  The present invention relates to an air conditioner including a filter cleaning mechanism that automatically cleans an air filter.

  When the dust collected by the air filter is accumulated, the ventilation resistance increases, and the operation efficiency of the air conditioner decreases. Therefore, an air conditioner having a filter cleaning mechanism that periodically removes dust collected by the air filter and automatically cleans the air filter has been put into practical use, and various types of filter cleaning mechanisms are provided. For example, an air filter disposed on the upstream side of the heat exchanger is moved along the filter moving path, and dust on the surface of the air filter is removed via a rotating brush or the like installed on the moving path. It is known that it is removed and collected in a dust box.

  This filter cleaning mechanism is provided on the filter moving path, a filter driving mechanism including a number of guide members that form a filter moving path, a motor that moves the air filter along the moving path, and the like. A rotary brush to be removed, a dust box for collecting the dust removed by the rotary brush, and the like are configured and incorporated in the front cover of the air conditioner. Further, a filter receiving portion is provided opposite to a cleaning device provided with a rotating brush and a dust box, and a means for positioning the cleaning device and the air filter relative to each other is provided in the filter receiving portion (for example, Patent Documents). 1).

JP 2009-168351 A

  The positioning means is for positioning and removing the air filter with respect to the filter cleaning mechanism without tilting. However, this positioning means includes a plurality of locking pieces provided in the filter receiving portion, a locking hole provided in the air filter that engages with and disengages from the locking piece, and the locking pieces directed toward the locking hole. And the latching piece is always configured to be pressed and biased toward the latching hole through the spring force.

  Therefore, when moving the air filter along the movement path during automatic cleaning, it is necessary to move the locking piece against the spring force, move over the locking piece, and move the air filter. The locking piece is pressed against the frame portion by a spring force and moved in a contacted state. Therefore, there are problems such as generation of contact noise, increase in power required for movement, and increase in size and cost of the motor constituting the filter drive mechanism.

  The present invention has been made in view of such circumstances, and the air filter can be positioned so as not to be displaced, and the stopper for positioning does not affect the movement of the air filter. An object of the present invention is to provide an air conditioner having a filter cleaning mechanism.

In order to solve the above-described problems, the air conditioner of the present invention employs the following means.
That is, an air conditioner according to the present invention includes an air filter that is detachably attached to an upstream side of a heat exchanger and is movable along a filter movement path, and the air filter is used as the filter movement path. A filter drive mechanism that moves along, a dust removal mechanism that removes dust from the surface of the air filter, a dust box that collects dust removed by the dust removal mechanism, and the like, and removes dust collected by the air filter And a filter cleaning mechanism. The air conditioner includes a filter cleaning mechanism, and is projected to the filter movement path by a spring force at a predetermined position along the filter movement path, and engages with an engagement portion of the air filter at the protruding position. The air filter is provided with a stopper for fixing the tip position of the air filter. When the dust box is mounted, it is retracted from the filter movement path against the spring force through the stopper release portion provided on the filter, and when removing the dust box, it can be projected into the filter movement path by the spring force. It is characterized by.

  According to the present invention, the stopper that protrudes into the filter movement path by a spring force at a predetermined position along the filter movement path and engages with the engagement portion of the air filter at the protruding position to fix the tip position of the air filter. The stopper is retracted from the filter movement path against the spring force when the dust box is installed, via the stopper release part provided in the dust box of the filter cleaning mechanism, and the spring force when removing the dust box. Since the dust box is removed when the air filter is mounted, and the stopper is protruded from the filter movement path, the stopper is provided on the air filter. By engaging the engaging portion, the tip position of the air filter can be fixed, After mounting the air filter, by attaching the dust box through the stopper release portion of the dust box, it retracts the stopper from the filter moving path can be disengaged from the engagement portion of the air filter. Therefore, when the air filter is automatically cleaned, the air filter is not displaced and moved, and the air filter can be moved smoothly by the filter driving mechanism and automatically cleaned. In addition, since the stopper is retracted from the filter movement path when the dust box is installed, the air filter does not move over the stopper or in contact with the stopper, reducing contact noise and power during movement, The motor constituting the filter driving mechanism can be reduced in size and cost.

  Furthermore, the air conditioner of the present invention is characterized in that, in the above air conditioner, a pair of the stoppers are provided on both the left and right sides with respect to one air filter.

  According to the present invention, since a pair of stoppers are provided on both the left and right sides of a single air filter, a notch provided in the air filter with respect to the pair of left and right stoppers when the air filter is mounted. By engaging the (engaging portion), the tip of the air filter can be reliably fixed at a predetermined position so that the air filter does not tilt left and right. Therefore, smooth movement of the air filter by the filter driving roller can be ensured.

  Furthermore, the air conditioner of the present invention is the air conditioner according to any one of the above-described air conditioners, wherein the stopper is slidable in a direction intersecting the filter moving path with respect to a bracket fixedly installed on the filter cleaning mechanism side. And is always urged through a spring in a direction protruding into the filter movement path.

  According to the present invention, the stopper is provided so as to be slidable in a direction intersecting the filter moving path with respect to the bracket fixedly installed on the filter cleaning mechanism side, and always protrudes into the filter moving path via the spring. Because it is urged, the means that can protrude or retract from the filter movement path to fix the tip position of the air filter is composed of only the stopper, bracket and spring, and through this, the tip position of the air filter Can be securely fixed at a predetermined position and the air filter can be attached. Therefore, the operation of the filter cleaning mechanism can be stabilized, and the tip positioning means of the air filter can be made compact with a minimum number of parts, and the incorporation of the means can be facilitated.

  Furthermore, the air conditioner of the present invention is the air conditioner according to any one of the above-described air conditioners, wherein the stopper is provided at one end of a link arm that is rotatably provided on the filter cleaning mechanism side, The lever can be rotated via a lever that is moved forward and backward by the stopper release portion of the dust box. When the dust box is mounted, the lever is moved backward against a spring force, so that the stopper is moved to the filter. The stopper can be protruded into the filter movement path by being retracted from the movement path and moving the lever forward by a spring force when the dust box is removed.

  According to the present invention, the stopper is provided at one end of the link arm that is rotatably provided on the filter cleaning mechanism side, and the link arm is connected via the lever that is moved forward and backward by the stopper release portion of the dust box. By rotating the lever against the spring force when the dust box is mounted, the stopper is retracted from the filter movement path, and when the dust box is removed, the lever is advanced by the spring force. Since the stopper can project into the filter movement path, the link arm is rotated via the lever that is moved forward and backward by the stopper release part of the dust box, and the stopper provided at one end projects into the filter movement path. Alternatively, the tip position of the air filter is fixed by being retracted from the filter moving path. It can be also be movable along the air filter to the filter moving path. Accordingly, by slightly moving the lever forward / backward, the stopper can be moved largely to protrude into the filter moving path or retract from the filter moving path, and the stopper function can be sufficiently secured.

  Furthermore, the air conditioner of the present invention is such that, in the above-described air conditioner, the lever is always urged in the forward direction via the first spring, and rotation can be restricted and opened by the lever. The link arm is urged via a second spring in a rotational direction for retracting the stopper, which is rotatably and slidably engaged at one end thereof, from the filter movement path, and the dust box is attached to the link arm. When the lever is moved backward against the first spring force, the link arm is rotated by the second spring force so that the stopper can be retracted from the filter moving path. It is characterized by.

  According to the present invention, the lever is always urged in the forward direction via the first spring, and the link arm whose rotation can be restricted and opened by the lever rotates and slides at one end thereof. The stopper that is engaged is urged through the second spring in the rotational direction for retracting from the filter moving path, and the lever is moved backward against the first spring force when the dust box is mounted. As a result, the link arm is rotated by the second spring force, and the stopper can be retracted from the filter movement path, so that the rotation of the link arm having the stopper provided at one end can be regulated and released by the lever. Therefore, even if an external force is applied to the stopper, the stopper itself does not move, and when the lever is moved backward against the first spring force by attaching the dust box, the second Link arm is rotated by the spring force, can be automatically retracted stopper from the filter movement paths. As a result, the stopper function can be further enhanced and ensured.

  Furthermore, the air conditioner of the present invention is the above air conditioner, wherein the lever is engaged with the link arm so as to be able to rotate and slide, and the link arm whose rotation is restricted by the lever is The stopper, which is engaged with one end of the filter so as to be pivotable and slidable, is biased via a third spring in the rotational direction protruding into the filter movement path.

  According to the present invention, the lever is engaged with the link arm so as to be rotatable and slidable, and the link arm whose rotation is regulated by the lever is engaged with one end of the link arm so as to be rotatable and slidable. Since the stopper that is being pushed is biased via the third spring in the direction of rotation that protrudes into the filter movement path, the link arm, which is released from the restriction by the lever, is rotated by the third spring force when the dust box is removed. Since the stopper protrudes into the filter movement path, the tip position can be fixed by engaging the engaging part of the air filter with this stopper, and when the dust box is attached, the stopper is released. By moving the lever backward against the third spring force by the part, the link arm is rotated and the stopper can be retracted from the filter moving path. . Therefore, by slightly moving the lever forward / backward, the stopper can be moved greatly to project or retract from the filter movement path, so that the stopper function can be sufficiently secured and one spring is provided. As a result, the configuration can be simplified.

  Furthermore, the air conditioner of the present invention is characterized in that in the above air conditioner, the lever and the stopper are integrated.

  According to the present invention, since the lever and the stopper are integrated, the support structure for the stopper can be simplified. Thereby, the structure of a stopper mechanism can be simplified more and cost can be reduced.

  According to the present invention, when the air filter is mounted, the dust box is removed, and the stopper protrudes from the filter moving path, so that the engaging portion provided in the air filter is engaged with the stopper. The tip position of the air filter can be fixed by attaching the dust box after attaching the air filter, and the stopper is retracted from the filter moving path via the stopper release portion of the dust box. It can be detached from the engaging portion. For this reason, during the automatic cleaning of the air filter, the air filter is not displaced and moved, and the air filter can be moved smoothly by the filter driving mechanism and automatically cleaned. In addition, since the stopper is retracted from the filter movement path when the dust box is installed, the air filter does not move over the stopper or in contact with the stopper, reducing contact noise and power during movement, The motor constituting the filter driving mechanism can be reduced in size and cost.

1 is an exploded perspective view of an air conditioner according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of the air conditioner shown in FIG. It is a perspective view of the state which removed the front panel of the air conditioner shown in FIG. It is a longitudinal cross-section of the front cover incorporating the filter cleaning mechanism of the air conditioner shown in FIG. It is a perspective view of the front cover shown in FIG. FIG. 6 is a perspective view showing a state where a dust box is removed from the front cover shown in FIG. 5. It is a side view of the gear box which comprises the filter drive mechanism of the filter cleaning mechanism integrated in the front cover shown in FIG. FIG. 8 is an exploded perspective view of the gear box shown in FIG. 7. It is a structure and operation state explanatory drawing (A) and (B) of the stopper mechanism for air-filter position fixing which concerns on 2nd Embodiment of this invention. It is a structure and operation state explanatory drawing (A) of an air filter position fixing stopper mechanism concerning a 3rd embodiment of the present invention, and (B). It is a structure and operation state explanatory drawing (A) and (B) of the stopper mechanism for air-filter position fixing which concerns on 4th Embodiment of this invention.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an exploded perspective view of the air conditioner according to the first embodiment of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a state in which the front panel is removed. A perspective view is shown. Here, the wall-mounted air conditioner 1 is illustrated.

  The air conditioner 1 includes a mounting plate 2 installed on a wall surface, a base body 3 attached to the mounting plate 2, a blower 4 assembled to the base body 3 and its drive motor 5, and heat assembled to the base body 3. An exchanger 6, a refrigerant pipe 7 extending rearward from one side of the heat exchanger 6, a control box 8 assembled to the base body 3, a blowout outlet assembly 9 assembled to the base body 3, and the base body 3 The front cover 10 assembled to the base body 3 so as to cover the front, top and bottom and left and right side surfaces of each assembled device, the air filter 11 incorporated in the front cover 10 and its cleaning mechanism 12, and the front cover 10 It is assembled by a front panel 13 attached so as to cover the front surface.

  The base body 3 is for mounting and supporting the air conditioner 1 by being mounted on a mounting plate 2 installed on the wall surface. The base main body 3 is attached to the back side heat exchanger of the heat exchanger 6 bent into a Λ shape. A part of the air path of the drain pan and the blower 4 is integrally formed. The blower 4 is a cross flow fan including a cylindrical impeller disposed horizontally along the air path of the base body 3, and is rotatably supported by the base body 3 via a drive motor 5. Yes.

  The heat exchanger 6 is a fin-and-tube heat exchanger bent in a Λ shape, and is installed so as to cover the upper surface and the front surface of the blower (cross flow fan) 4. A refrigerant pipe 7 for circulating the refrigerant from one side of the heat exchanger 6 is extended backward. Further, in the lower part of the front heat exchanger of the heat exchanger 6, a drain pan 14, a stabilizer 15 that forms the air path of the blower 4, a wind direction adjusting louver 16, a flap 17, and the like incorporated therein. The blower outlet assembly 9 which consists of is assembled | attached.

  The control box 8 is incorporated in the right side of the base body 3 and controls the operation of the air conditioner 1 according to a command from the remote controller. The front cover 10 has a grid-like bar 19 on the upper surface and the front surface, and forms an air suction port 20. The crosspiece 19 is configured to also serve as a filter guide. Further, in the front cover 10, a center frame 10 </ b> A is formed at the center in the left-right direction of the air suction port 20, and side frames 10 </ b> B and 10 </ b> C are formed on both the left and right sides of the air suction port 20. The center frame 10A and the side frames 10B and 10C are provided with necessary strength because components and related parts of the filter cleaning mechanism 12 described later are assembled.

  A pair of left and right suction grilles 21 corresponding to the air suction ports 20 are integrally assembled on the upper surface of the front cover 10, and the front panel 13 is assembled on the front surface so as to be opened and closed upward with the upper part as a fulcrum. Between the upper surface and the front surface of the front cover 10 and the suction grille 21 and the front panel 13, an air filter 11 that collects dust in indoor air sucked from the suction grille 21 is connected to a filter moving path 26, which will be described later. A filter cleaning mechanism 12 is incorporated that is disposed so as to be movable along the lines 34 and 35 and removes dust collected by the air filter 11 from the filter surface and automatically cleans the air filter 11. The air filter 11 and the filter cleaning mechanism 12 are incorporated on the front cover 10 side.

  An air channel 23 extending from the suction grill 21 to the outlet 18 is formed in the housing assembled by the base body 3, the air outlet assembly 9, the front cover 10, the front panel 13, and the like. Inside, the air filter 11, the heat exchanger 6, and the air blower 4 are sequentially arranged from the upstream side. Thereby, the indoor air sucked through the suction grille 21 passes through the air filter 11 and is removed of dust, and then cooled or heated in the process of passing through the heat exchanger 6, and is blown out through the blower 4 through the outlet 18. Is blown into the room.

  A pair of air filters 11 are disposed on the left and right sides corresponding to the air suction port 20, and a horizontally-long air purification filter 24 is placed on the left and right sides of the air filter 11 via a filter holding frame 25 at the front upper portion on the back side. A pair is provided. The pair of air filters 11 are formed by a large number of filter guide members so as to cover the front region of the grid-like crosspieces 19 provided on the upper surface and the front surface of the front cover 10 on the upstream side of the heat exchanger 6. It is disposed along the first filter movement path 26.

  The first filter moving path 26 includes a surface of the grid-shaped crosspiece 19, a lower surface of the suction grille 21, a guide member 27 disposed on the front surface side of the front cover 10, an outer surface of the filter holding frame 25 of the air filter 24, and a filter holding The front cover is constituted by a large number of guide members such as a guide member 28 disposed in the front upper portion of the front cover 10 facing the frame 25 and a guide member 29 disposed opposite the guide member 26 on the rear surface of the front panel 13. Corresponding to a pair of air filters 11 on the left and right of 10, a pair is formed on both sides thereof. These many filter guide members are integrally assembled to the front cover 10.

  The first filter moving path 26 is formed along a moving path 26A formed along the air suction port 20 on the upper surface side of the front cover 10 and the air suction port 20 on the front side of the front cover 10. And a movement path 26B. Further, the pair of left and right air filters 11 disposed at the upstream position of the heat exchanger 6 via the first filter moving path 26 removes dust collected on the dust collecting surface, The pair of filter cleaning mechanisms 12 can reciprocate in the first filter moving path 26.

  The filter cleaning mechanism 12 is for automatically cleaning the air filter 11 by removing dust collected by the surface of the air filter 11, and is disposed at a lower part on the front side of the front cover 10. The filter cleaning mechanism 12 according to the present embodiment is disposed to face the pair of left and right cylindrical filter driving rollers 30 for reciprocating the air filter 11 and below the filter driving rollers 30, and is moved by the filter driving rollers 30. A pair of left and right rotating brushes (dust removing mechanism) 31 for scraping dust from the dust collecting surface of the air filter 11; and a pair of left and right removable dust boxes 32 for collecting and storing the dust scraped by the rotating brush 31; The filter driving roller 30 and the rotating brush 31 are driven by stepping motors (motors) 39 and 40 to be described later, and a pair of left and right drive mechanisms 33 including a reduction gear train and the like.

  Gears (pinions) 30A are formed at the left and right ends of the pair of filter drive rollers 30, and racks 11A provided on the filter frames on the left and right sides of the air filter 11 are meshed with the gears 30A. Thus, the pair of left and right air filters 11 can reciprocate in the first filter movement path 26 via the filter driving rollers 30. Each filter drive roller 30 can be rotated forward and backward via a filter stepping motor 39 (see FIGS. 7 and 8) of the drive mechanism 33.

  Further, when the air filter 11 is moved through the filter driving roller 30 of the filter cleaning mechanism 12 during filter cleaning, the second filter moving path 34 and the third filter moving path 35 for securing the moving path are in front. A pair of air filters 11 are formed in the cover 3 corresponding to the pair of air filters 11. The second filter moving path 34 is a U-turn path for turning the air filter 11 upward via a curved portion along the filter driving roller 30, and is provided along the outer peripheral surface of the filter driving roller 30 and along the U-turn path. The curved guide member 36 is formed. The second filter movement path 34 is continuous with one end of the first filter movement path 26.

  The third filter movement path 35 is a path for guiding the air filter 11 to a position off the upper part of the heat exchanger 6 and is continuous with the end portion of the second filter movement path 34 on the U-turned side. ing. The third filter moving path 35 includes a moving path 26 </ b> B of the first filter moving path 26 extending in the vertical direction along the back surface of the front panel 13 on the front side of the heat exchanger 6, and the heat exchanger 6. Is extended upward in parallel with the movement path 26B.

  The third filter moving path 35 includes a moving path 35A extending between the surface of the crosspiece 19 on the front surface side of the front cover 10 and the rear surface 27A of the guide member 27 and the front surface of the front cover 10. A movement path 35B formed by a guide member 28 and a guide member 29 provided on the back surface of the front panel 13, which intersects the first filter movement path 26 at an upper portion and extends to the back surface of the front panel 13, Folded downward along the back surface of the front panel 13 and extended downward, and joined to the first filter moving path 26 in the vicinity of the lower end of the guide member 28, provided on the back surface of the guide member 28 and the front panel 13. And a movement path 35 </ b> C formed by the guide member 29.

  The position where the third filter movement path 35 and the first filter movement path 26 intersect is a process in which the air filter 11 is moved along the third filter movement path 35 and one end of the position reaches the intersection position. The air filter 11 that is moving along the first filter movement path 26 is set at an uppermost position farthest from the U-turn position of the second filter movement path 34 so that the other end of the air filter 11 passes through the intersection position.

  The filter driving roller 30, the rotating brush 31, the dust box 32, the driving mechanism 33, and the like constituting the filter cleaning mechanism 12 are detachably incorporated into the front cover 10 via a plurality of sliding lock mechanisms 36 and 37. . The lock mechanisms 36 and 37 are incorporated in the dust box 32, and the dust box 32 is detachably incorporated between the center frame 10A of the front cover 3 and the side frames 10B and 10C via the lock mechanisms 36 and 37. . By opening the lock mechanisms 36 and 37, the dust box 32, the rotating brush 31, the filter drive roller 30, the drive mechanism 33 and the like incorporated in the dust box 32 can be attached and detached.

  As shown in FIGS. 7 and 8, the pair of left and right drive mechanisms 33 include a gear box 38 that is assembled to the side frames 10 </ b> B and 10 </ b> C of the front cover 10. The gear box 38 is formed by screwing a main body 38A and a lid body 38B. Inside the gear box 38, a stepping motor 39 for the air filter 11 and a stepping motor 40 for the rotating brush 31, an output shaft of the stepping motor 39, and a filter are provided. A reduction gear train composed of gears 41, 42, 43, 44 provided between the rotation shaft of the drive roller 30 is incorporated. In addition, a gear 45 is provided on the output shaft of the stepping motor 40, and the gear 45 (see FIG. 3) provided on the rotation shaft of the rotary brush 31 is engaged with the rotary brush 31. Is configured to be rotationally driven.

  The guide member 28 forming the filter moving paths 26 and 35 is integrally formed on the outer surface of the gear box 38 on the main body 38A side. The pair of left and right gear boxes 38 are configured to be incorporated in the side frames 10B and 10C of the front cover 10, but the pair of left and right switch boxes 47 (see FIG. 3) having substantially the same outer shape as the gear box 38. Is incorporated in the center frame 10A. The switch box 47 incorporates a limit switch and a lever (both not shown) for detecting the position of the air filter 11 inside.

  Further, when the air filter 11 is mounted on the first filter moving path 26, the pair of left and right gear boxes 38 and switch box 47 are set so that the left and right ends thereof are fixed at predetermined positions so as not to be displaced. The stopper mechanism 48 is incorporated. The stopper mechanism 48 includes a bracket 49 provided on the gear box 38 and the switch box 47 side, a stopper 50 provided slidably with respect to the bracket 49, and the stopper 50 always passing through the first filter moving path. 26 and a spring 51 that is biased in a direction protruding into the inside. Although the stopper mechanism 48 provided on the gear box 38 side has been described here, it is assumed that the switch mechanism 47 is also provided with the stopper mechanism 48 having the same configuration.

  The stopper 50 of the stopper mechanism 48 abuts against the stopper release portion 32B provided on both end arm portions 32A of the dust box 32 when the dust box 32 is assembled to the front cover 10 and resists the spring 51. It is configured to be retracted from one filter moving path 26 to the inside thereof. In the retracted position, the filter is configured not to contact the air filter 11 that moves in the first filter movement path 26 during filter cleaning (see FIG. 5).

  On the other hand, as shown in the left side of FIG. 3, when the dust box 32 is removed from the front cover 10, the stopper 50 is pushed out by the spring 51 and protrudes into the first filter moving path 26. ing. In this state, it engages with notches (engagement portions) 11B provided on the filter frames on both the left and right sides of the air filter 11, and the tip of the air filter 11 is fixed at a predetermined position so that no displacement occurs. The air filter 11 can be set (see FIG. 6).

With the configuration described above, according to the present embodiment, the following operational effects can be obtained.
When the air conditioner 1 is operated, room air is sucked through the suction grille 21 and the air suction port 20 by the rotation of the blower 4. In the process of passing through the air filter 11 and the air filter 24, the air is cleaned of dust, odor, and the like, purified, and supplied to the heat exchanger 6. Then, the air is cooled or heated by heat exchange with the refrigerant in the process of passing through the heat exchanger 6 and blown into the room through the air flow path 23 and the air blowing port 18 to cool or heat the room. Provided.

  When the operation time of the air conditioner 1 becomes longer, dust collected in the air filter 11 is gradually accumulated, and the ventilation resistance is gradually increased. If the operation is continued as it is, the pressure loss increases and the operation efficiency of the air conditioner 1 is reduced. For example, the filter cleaning mechanism 12 is operated every time the operation ends when the accumulated operation time reaches the set time, and the air An automatic filter cleaning operation for removing dust accumulated in the filter 11 is performed. In this automatic filter cleaning operation, the filter driving roller 30 and the rotating brush 31 are driven via the drive mechanism 33, and the air filter 11 disposed along the first filter moving path 26 is moved to the second filter moving path 34. This is performed by moving to the third filter moving path 35 via.

  That is, the air filter 11 meshed with the gear 30A via the rack 11A is moved by the rotation of the filter driving roller 30 driven by the stepping motor 39 via the reduction gear train composed of the gears 41, 42, 43, and 44. The first filter moving path 26 is moved forward to the second filter moving path 34 and the third filter moving path 35. During this time, the rotating brush 31 disposed opposite to the filter driving roller 30 contacts the surface of the air filter 11 while being rotated by the stepping motor 40, and the dust accumulated on the surface is scraped and collected in the dust box 32. By doing so, the dust collecting surface of the air filter 11 is automatically cleaned.

  When the air filter 11 is moved forward to a predetermined position, the stepping motors 39 and 40 are rotated in the reverse direction, and the air filter 11 is reversed from the third filter moving path 35 to the second filter moving path 34 in the reverse manner. The automatic cleaning of the air filter 11 is completed by returning to the one filter moving path 26. The dust collected in the dust box 32 by the automatic filter cleaning is incorporated into the dust box 32 by releasing the lock mechanisms 36 and 37 and removing the dust box 32 from the front cover 10 when a certain amount of dust is accumulated. By removing the rotating brush 31, the dust can be discarded and processed.

  On the other hand, it is desirable to periodically remove and clean the air filter 11. By removing the dust box 32, the air filter 11 can be pulled down along the first filter moving path 26 and removed. The air filter 11 needs to be positioned and incorporated at a predetermined position so as not to be displaced or tilted when mounted. In the present embodiment, a stopper mechanism 48 for positioning the air filter 11 is incorporated in the pair of left and right gear boxes 38 and switch box 47, and the stopper 50 projects into the first filter movement path 26 via the spring 51. Alternatively, it can be retracted from the first filter moving path 26.

  That is, when the dust box 32 is assembled to the front cover 10, the stopper 50 abuts against the stopper releasing portion 32 </ b> B, and as shown in FIG. The air filter 11 is allowed to move, but when the dust box 32 is removed, as shown in FIG. It is designed to protrude. For this reason, the notch (engagement portion) 11B of the air filter 11 is engaged with the protrusion of the stopper 50, and its tip is engaged at a predetermined position, that is, the rack 11A of the air filter 11 meshes with the gear 30A of the filter drive roller 30. By positioning and fixing at the insertion position, the air filter 11 can be positioned and incorporated so as not to cause displacement or inclination.

  Thus, according to the present embodiment, when the air filter 11 is automatically cleaned, there is no fear that the air filter 11 is displaced and moved, and the filter drive roller 30 moves the air filter 11 to its filter movement paths 26 and 34. , 35 can be smoothly moved and automatically cleaned. Further, since the stopper 50 is retracted from the first filter moving path 26 when the dust box 32 is mounted, the air filter 11 does not move over the stopper 50 or in contact with the stopper 50, and the contact sound or The power during movement can be reduced, and the stepping motor 39 constituting the drive mechanism 33 can be reduced in size and cost.

  In addition, since a pair of the stoppers 50 are provided on both the left and right sides of the single air filter 11, when the air filter 11 is mounted, the cuts provided on the air filter 11 with respect to the pair of left and right stoppers 50 are provided. By engaging the notch portion (engagement portion) 11B, the tip of the air filter 11 can be securely fixed at a predetermined position so that the air filter 11 is not tilted left and right. Therefore, the smooth movement of the air filter 11 by the filter driving roller 30 can be ensured.

  Further, the stopper 50 is provided so as to be slidable in a direction intersecting the first filter moving path 26 with respect to the bracket 49 provided on the gear box 38 and the switch box 47 on the filter cleaning mechanism 12 side. And is always urged in a direction protruding to the first filter movement path 26. Therefore, a stopper mechanism 48 that can project or retract with respect to the first filter moving path 26 in order to fix the tip position of the air filter 11 is configured by only the stopper 50, the bracket 49, and the spring 51, and the stopper mechanism 48. Thus, the air filter 11 can be mounted with the tip position of the air filter 11 securely fixed at a predetermined position. Therefore, the operation of the filter cleaning mechanism 12 can be stabilized, and the tip positioning means of the air filter 11 can be made compact with a minimum number of parts, and the assembly of the mechanism 48 can be facilitated.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. 9 (A) and 9 (B).
The present embodiment differs from the first embodiment described above in the configuration of the stopper mechanism 58. Since other points are the same as those in the first embodiment, description thereof will be omitted.
In the present embodiment, the stopper mechanism 58 is rotatable and slidable on one end of the link arm 59 and a link arm 59 provided rotatably on the gear box 38 and the switch box 47 on the filter cleaning mechanism 12 side. When the link arm 59 is rotated, the stopper 60 can be protruded from or retracted from the first filter moving path 26 and the stopper release portion 32B of the dust box 32 is brought into contact with the stopper 60 and moved backward and forward. The lever 61 that can restrict and release the rotation of the link arm 59 via the cam portion 61A, the first spring 62 that always urges the lever 61 in the forward direction, and the link arm 59 is always the stopper 60. Is composed of a second spring 63 that is biased in the rotational direction of retreating from the first filter moving path 26.

  That is, in the stopper mechanism 58 of the present embodiment, when the dust box 32 is mounted, the lever 61 abuts against the stopper release portion 32B and resists the first spring 62 from the position of FIG. 9A to FIG. 9B. Since the cam portion 61A releases the rotation of the link arm 59 by being moved backward to the position, the link arm 59 is rotated leftward as shown in FIG. 9B by the spring force of the second spring 63. The As a result, the stopper 60 is moved from the position of FIG. 9A protruding from the first filter movement path 26 to the position retracted from the first filter movement path 26 as shown in FIG. 9B. On the other hand, when the dust box 32 is removed, the lever 61 is moved forward by the spring force of the first spring 62, so that the link arm 59 is rotated to the position shown in FIG. The rotation is restricted. As a result, the stopper 60 is moved to a position protruding into the first filter movement path 26.

  Thus, when the air filter 11 is set in the first filter movement path 26, the stopper 60 is protruded into the first filter movement path 26 as shown in FIG. 9A. Therefore, by engaging a notch (engagement portion) 11B provided in the air filter 11 with the stopper 60, the tip of the air filter 11 is tilted so that the air filter 11 is not tilted left and right. It can be securely fixed at a predetermined position. When the lever 61 is moved backward against the spring force of the first spring 62 due to the attachment of the dust box 32, the link arm 59 is rotated by the spring force of the second spring 63. It can be automatically retracted from the one-filter moving path 26.

  Therefore, according to the present embodiment, the link arm 59 is rotated via the lever 61 that is moved forward and backward by the stopper releasing portion 32B of the dust box 32, and the stopper 60 provided at one end of the link arm 59 is moved to the first filter moving path 26. The tip position of the air filter 11 can be fixed by projecting into or retracting from the first filter movement path 26, and the air filter 11 can be moved along the first filter movement path 26. Can do. For this reason, the stopper 61 can be moved largely by moving the lever 61 slightly forward and backward to protrude into the first filter moving path 26 or retreat from the first filter moving path 26, thereby sufficiently securing the stopper function. be able to.

  In addition, since the link arm 59 provided with the stopper 60 at one end can be controlled and opened by the lever 61, the stopper 60 itself does not move even if an external force is applied to the stopper 60. In addition, when the lever 61 is moved backward against the spring force of the first spring 62 by mounting the dust box 32, the link arm 59 is rotated by the spring force of the second spring 63, and the stopper 60 moves through the first filter. Since it can be automatically retracted from the path 26, the stopper function can be further enhanced and ensured.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
This embodiment is different from the above-described second embodiment in that the first spring 62 and the second spring 63 are omitted and a third spring 64 is newly provided. Since other points are the same as those in the first and second embodiments, description thereof will be omitted.
In the present embodiment, instead of the first spring 62 and the second spring 63 of the second embodiment, the link arm 59 is always urged in the rotational direction in which the stopper 60 protrudes into the first filter movement path 26. A third spring 64 is provided, and the link arm 59 and the lever 61 are engaged so as to be rotatable and slidable.

  Even in this configuration, when the dust box 32 is removed and the movement of the lever 61 is released, the link arm 59 is rotated to the right by the spring force of the third spring 64, and the link arm 59 can rotate and slide. The combined lever 61 is advanced. As a result, as shown in FIG. 10A, the stopper 60 protrudes into the first filter movement path 26, so that the notch portion (engagement) provided in the air filter 11 is provided in the stopper 60. By engaging the joint portion) 11B, the tip of the air filter 11 can be securely fixed at a predetermined position so that the air filter 11 is not inclined to the left and right. Further, by attaching the dust box 32 and moving the lever 61 backward against the spring force of the third spring 64 by the stopper releasing portion 32B, the lever 61 is rotated as shown in FIG. Since the link arm 59 that is slidably engaged is rotated leftward, the stopper 60 can be automatically retracted from the first filter moving path 26.

  Thus, in this embodiment as well, as in the second embodiment, the stopper 61 is moved largely by moving the lever 61 slightly forward and backward to protrude into the first filter movement path 26 or move to the first filter. It can be retreated from the path 26, and a sufficient stopper function can be secured. Further, in the case of the present embodiment, since the spring can be one of the third springs 64, the configuration can be simplified as compared with the second embodiment.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 11 (A) and 11 (B).
This embodiment is different from the above-described third embodiment in that the stopper 60 and the lever 61 are integrated in order to further simplify the configuration. Since other points are the same as those in the first to third embodiments, the description thereof will be omitted.
In the present embodiment, a stopper 60 and a lever 61, which are engaged with the link arm 59 so as to be rotatable and slidable, are integrated in parallel with each other. By adopting such a configuration, it is possible to reduce the number of parts, further simplify the configuration, and reduce the cost while maintaining a stopper function substantially equivalent to that of the second and third embodiments.

  In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above embodiment, an example in which the present invention is applied to the wall-mounted air conditioner 1 has been described. However, the present invention is not limited to this and can be applied to other types of air conditioners as well. Further, the filter cleaning mechanism 12 may have any configuration as long as it is of a cleaning system that moves the air filter 11 along the moving path by a driving mechanism such as a filter driving roller 30 to remove dust. In particular, the filter movement path can be modified in various ways.

DESCRIPTION OF SYMBOLS 1 Air conditioner 6 Heat exchanger 11 Air filter 11B Notch part (engagement part)
12 Filter cleaning mechanism 26 First filter moving path 30 Filter driving roller 31 Rotating brush 32 Dust box 32B Stopper release part 33 Drive mechanism 34 Second filter moving path 35 Third filter moving path 48 Stopper mechanism 49 Bracket 50 Stopper 51 Spring 58 Stopper mechanism 59 Link arm 60 Stopper 62 First spring 63 Second spring 64 Third spring

Claims (7)

An air filter that is detachably attached to the upstream side of the heat exchanger and is movably disposed along the filter moving path;
A filter drive mechanism that moves the air filter along the filter moving path; a dust removal mechanism that removes dust from the surface of the air filter; a dust box that collects dust removed by the dust removal mechanism; In an air conditioner equipped with a filter cleaning mechanism for removing dust collected in
A stopper is provided at a predetermined position along the filter moving path so as to protrude from the filter moving path by a spring force and engage with the engaging portion of the air filter at the protruding position to fix the tip position of the air filter. ,
The stopper is retracted from the filter movement path against a spring force when the dust box is attached, via a stopper release portion provided in the dust box of the filter cleaning mechanism, and when the dust box is removed, a spring An air conditioner characterized by being able to project into the filter movement path by force.   2. The air conditioner according to claim 1, wherein a pair of the stoppers are provided on both right and left sides of the single air filter.   The stopper is provided to be slidable in a direction intersecting the filter moving path with respect to a bracket fixedly installed on the filter cleaning mechanism side, and is always urged in a direction protruding to the filter moving path via a spring. The air conditioner according to claim 1 or 2, wherein the air conditioner is provided.   The stopper is provided at one end of a link arm that is rotatably provided on the filter cleaning mechanism side, and the link arm is rotated via a lever that is moved forward and backward by the stopper release portion of the dust box. When the dust box is mounted, the lever is moved backward against the spring force, so that the stopper is retracted from the filter moving path, and when the dust box is removed, the lever is moved forward by the spring force. The air conditioner according to claim 1 or 2, wherein the stopper can protrude into the filter movement path.   The lever is always urged in the forward direction via the first spring, and the link arm whose rotation can be restricted and opened by the lever is engaged with one end of the link arm so as to be rotatable and slidable. The stopper is urged via a second spring in a rotational direction for retracting the stopper from the filter movement path, and the lever is moved backward against the first spring force when the dust box is mounted. The air conditioner according to claim 4, wherein the link arm is rotated by a second spring force so that the stopper can be retracted from the filter movement path.   The lever is engaged with the link arm so as to be rotatable and slidable, and the link arm whose rotation is restricted by the lever is engaged with one end of the link arm so as to be rotatable and slidable. The air conditioner according to claim 4, wherein the stopper is urged via a third spring in a rotation direction protruding in the filter movement path. The air conditioner according to claim 6, wherein the lever and the stopper are integrated.

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