JP2012102985A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the depth dimension of an air conditioner for compact size by forming an filter movement path for automatic cleaning of a filter in S-shape, and assembling the movement path in a front side cover as one body.SOLUTION: An indoor unit comprises a case consisting of a body casing, a front side cover, and an open panel, with a sucking opening provided on the upper surface and an outlet on the front side or a bottom surface. The indoor air having been sucked through the sucking opening is exchanged for heat using a heat exchanger after the air has passed through the filter provided along the inside surface of the sucking opening, and it is then blown out of the outlet. A movement path 27 for moving a filter 15 is provided. In the movement path, an S-like bending part 42 is formed between the open panel 4 and the heat exchanger. A filter movement device 28 and a dust box 17 for cleaning the filter are provided in the middle of the movement path. The movement path is built in the front side cover as one body.

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner having an air filter automatic cleaning function.

  Conventionally, in an air conditioner, indoor air sucked by a blower fan is cooled or heated by passing through a heat exchanger and returned to the room, but dust floating in the air is returned to the heat exchanger. In order to prevent contamination, an air filter is provided on the front side of the heat exchanger. When dust adheres to this filter and clogging occurs and ventilation resistance increases, heat exchange is hindered, so that the air conditioning capability of the air conditioner decreases and power consumption increases. In order to eliminate such inconvenience, various air conditioners having an automatic filter cleaning function have been proposed.

  Moreover, when cleaning a filter automatically, in order to clean the whole surface of a filter with a cleaning brush, it is necessary to move at least one of a filter and a cleaning brush. As a method for moving the filter, for example, as disclosed in Patent Document 1, the filter includes a transfer unit that moves the filter, and a cleaning unit that removes dust attached to the filter during the moving process. A normal guide portion that holds the filter in a normal use position, and a rotating brush that is connected to one end portion of the normal guide portion and contacts the curved portion, and moves the filter so that one end of the normal guide portion is moved. The tip part of the filter located in the section is usually folded in a U-shape from the guide part at the curved part and is automatically cleaned by the brush, and the cleaned dust is collected in a dust box attached from the front side It is.

Japanese Patent No. 4175409

  In this conventional air conditioner, the movement path of the filter is formed in a U-shape, and the structure is such that the movement of the filter is folded back. Therefore, the depth dimension of the air conditioner increases, It was an obstacle to downsizing.

  This invention pays attention to this point, and in order to solve the above-mentioned drawbacks, in particular, the configuration thereof has an air inlet on the top surface and an air outlet on the front surface or bottom surface of the indoor unit that constitutes the casing with the main body casing, the front cover, and the open panel. And the room air sucked from the suction port passes through a filter provided along the inner surface side of the suction port, and then heat-exchanges with a heat exchanger and blows out from the outlet. A moving path is provided, and an S-shaped bent portion is formed between the open panel and the heat exchanger in the moving path, and a filter moving device and a dust box for cleaning the filter are provided in the moving path. The route is integrated into the front cover.

According to the present invention, the filter moving path for automatically cleaning the filter is formed in an S shape, and the moving path is integrated into the front cover, so that the depth dimension of the air conditioner is reduced and made compact. I was able to.
Further, by providing a dust box for storing the dust removed from the filter in front of the S-shaped bent portion, the dust attached to the filter can be efficiently collected forward, and the dust box can be easily removed. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The same development view. FIG. The dust box perspective view of the open state. The dust box front view which omitted the center. Sectional drawing of the principal part which opposes the dust box left side surface. The principal part sectional view which opposes the dust box right side. The perspective view of the filter. The perspective view of the filter rotating shaft. The perspective view of the filter holder. The perspective view inside the front cover. The exploded perspective view of the drive part. The fragmentary perspective view in the middle of the filter attachment. The perspective view of the principal part cross section.

  Next, an embodiment of an air conditioner according to the present invention will be described with reference to the drawings. 1 is an indoor unit of a separate type air conditioner, and a casing is formed by a main body casing 2, a front cover 3 and an open panel 4, and mounting shafts are provided at the upper and left sides of the open panel 4 located on the front side of the front cover 3. 5 and is attached to the front of the front cover 3 so as to be openable and closable with the mounting shaft 5 as a fulcrum. The upper surface of the front cover 3 is provided with a horizontally long suction port 6, and the bottom surface of the front cover 3 is provided with a horizontally long air outlet 7 that blows air whose temperature is adjusted obliquely forward. A blowing path 8 is formed between the two. A horizontally long fin-tube heat exchanger 9 is disposed inside the air inlet 6 of the air passage 8 in an inverted V shape as viewed from the side with the middle portion in the front-rear direction as the top. The heat exchanger 9 includes a rear heat exchanger 10 that faces the main casing 2 and a front heat exchanger 11 that faces the front cover 3. A horizontally long crossflow fan is disposed below the heat exchanger 9. A blower fan 12 is arranged.

The blower outlet 7 is provided with a vertical wind direction plate 13 that adjusts the wind direction of the blown air in the vertical direction during operation and automatically closes the blower port 7 when stopped, and a left and right wind direction plate 14 that adjusts the wind direction of the blown air in the horizontal direction. ing.
A pair of left and right filters 15 formed from a resin net are provided inside the suction port 6 in order to prevent dust floating in the air from contaminating the heat exchanger 9.
A space 16 is provided between the front cover 3 and the open panel 4 so that a dust box 17 can be detachably attached to the left wall 18 of the space 16. Similarly, a right elongated hole 21 is provided.
The dust box 17 includes a dust box main body 22 for storing dust collected therein, a lid 23 covering the upper surface from the front surface, and a brush 24 for scraping off dust stuck to the filter 15. Is provided with a comb portion 25 for dropping dust entangled with the brush 24.
The filter 15 moves along a moving path 27 along the groove 26 formed in the left and right and inside of the open panel 4 from the suction port 6.

  Reference numeral 28 denotes a filter feed shaft as a filter moving device, which moves the filter 15 by rotation. A feed shaft projection 30 that engages the vertical frame 29 of the filter 15 at the center and right and left of the cylinder, and a drive unit 31 at the right end Two guide ribs 33 are provided between the engaging gear portion 32 and the feed shaft protrusion 30. The drive unit 31 is attached to the inside of the right side wall 20 of the front cover 3, and includes two step motors 31a that respectively rotate the filter feed shaft 28 and the brush 24, and a number of gears 31b that transmit the rotation of the motor 31a. It has.

The suction port 6 has a plurality of horizontally elongated holes 36 formed in a lattice pattern by a vertical beam 34 and a horizontal beam 35, and a rail-shaped convex portion 37 is integrally provided on the filter 15 side inside the vertical beam 34. Sometimes, the horizontal frame 38 and the horizontal beam 39 of the filter 15 are caught by the horizontal beam 35 of the suction port 6 so as not to disturb the movement of the filter 15, and the vertical beam 40 of the filter 15 and the rail-shaped convex portion 37 are opposed to each other. In such a positional relationship, the thickness of the rail-shaped convex portion 37 is increased as it is closer to the front side, so that the filter 15 can move more smoothly from the upper groove portion 41 side of the moving path 27 to the S-shaped bent portion 42 side. Consideration. The filter 15 is prevented from being caught by the horizontal rail 35 of the suction port 6 and stopped.
Further, since the rail-like convex portion 37 of the suction port 6 is provided at a position facing the vertical rail 40 of the filter 15, the contact of the filter 15 with the rail-like convex portion 37 is made by the vertical rail 40 having a relatively high strength. As a result, the durability of the apparatus is improved.

The filter 15 forms an outer frame with the vertical frame 29 in which the left and right sides are formed in an uneven shape and an upper and lower horizontal frame 38, and the inside of the outer frame is composed of two vertical beams 40 and two horizontal beams 39. It is made by integrally molding a flexible thin net 43 inside the compartment. The filter 15 is positioned on the upper groove 41 side inside the suction port 6 in a normal state. When automatic filter cleaning is started, the filter feed shaft 28 and the brush 24 rotate, and the filter 15 moves toward the lower groove 44 while moving the brush. The dust accumulated on the surface of the filter 15 is peeled off by 24 and stored in the dust box main body 22, and the space between the upper groove 41 side and the lower groove portion 44 side of the moving path 27 is bent in an S shape (see above). S-shaped bent portion 42) By providing the brush 24 and the filter feed shaft 28, the depth dimension of the indoor unit 1 can be reduced and the size can be reduced. Further, by making the contact between the brush 24 and the filter 15 at least 1/4 of the outer periphery of the brush 24 at the S-shaped bent portion 42, the contact area between the brush 24 and the filter 15 can be increased, and the dust can be efficiently collected. Can be scraped off.
Further, by integrating the moving path 27 into the front cover 3, the depth dimension of the air conditioner can be made smaller and more compact.

Further, by providing the filter feed shaft 28 on the back side of the S-shaped bent portion 42 and the dust box 17 on the front side of the S-shaped bent portion 42, dust attached to the filter 15 is efficiently collected forward. The dust box 17 can be easily removed.
Reference numeral 45 denotes a filter holder, which is provided in front of the filter feed shaft 28 and the lower groove portion 44. The filter 15 is sandwiched between the filter feed shaft 28 and the S-shaped bent portion of the filter 15 is rotated by the rotation of the filter feed shaft 28. 42 is smoothly moved, and is attached to the front cover 3 so as to be rotatable by a rotation shaft 46 provided at a pair on the left and right side ends.

  Reference numeral 47 denotes a front drain pan that receives the dew condensation water generated on the front side of the heat exchanger 9 and is formed integrally with the upper wall of the air outlet 7. Reference numeral 48 denotes a rear drain pan that receives condensed water generated on the back side of the heat exchanger 9 and is formed integrally with the main body casing 2. Reference numeral 49 denotes an electrical box that houses electronic components such as a control board (not shown), and is attached to the right front of the main casing 2. Reference numeral 50 denotes a display unit for displaying an operation state by lamps (not shown) such as an operation lamp and a timer lamp.

  The left and right side walls 51 of the dust box body 22 are provided with long round protrusions 52 that are long in the vertical direction, while the end portion 53 that extends downward on the left and right sides of the lid 23 is provided with a circular hole at the bottom and an elongated hole 54 at the top. When the lid is closed, the projection 52 engages with the upper portion of the hole 54 to prevent the lid from opening. If the lid 23 is lifted upward from the dust box body 22 and the projection 52 reaches the circular lower portion of the hole 54. The lid 23 can be rotated and opened around the bottom of the hole 54, and the dust collected in the dust box body 22 can be discarded. In order to close the lid 23, the reverse is sufficient. The lid can be opened and closed very easily, and when the lid 23 is closed and set on the front cover 3, the projection 52 and the upper part of the hole 54 are engaged so that the lid 23 There is no such thing as opening without permission.

  In addition, a vertically long plate-like protrusion 55 is provided at the center of the left side wall 51 of the dust box body 22, and a slide lever 56 that protrudes from the right side wall 51 and is slidable in the left-right direction is provided. The procedure for attaching the dust box 17 to the space 16 of the front cover 3 will be described. After confirming that the lid 23 is set on the dust box main body 22, the vertically long plate-like protrusion 55 of the left side wall 51 is attached to the front cover 3. If the slide lever 56 of the right side wall 51 is inserted into the right long hole 21 of the front cover 3 and locked, the brush gear 57 provided at the right end of the brush 24 becomes the gear 31b of the drive unit 31. The meshing attachment is completed. The removal can be performed by reversing the attachment procedure described above, and the dust box 17 can be attached and detached very easily.

  FIG. 13 is a perspective view showing the attachment of the filter 15 with the open panel 4 and the dust box 17 removed. The attachment and detachment of the filter 15 will be described below. If the lower part of the open panel 4 is pulled forward, it will be attached to the front cover 3. The dust box 17 appears when the lock is released and it rotates about the mounting shaft 5. If this is removed by the above procedure, a pair of left and right filter holders 45 appear at the S-shaped bent part 42. If the filter retainer 45 is pulled forward about the rotation shaft 46, the tip of the filter 15 is opened, so that the filter 15 can be pulled out. The attachment of the filter 15 is such that the operator can easily set the filter 15 to the normal position by visual observation by making the positions of the vertical bars 40 of the filter 15 and the guide ribs 33 of the filter feed shaft 28 the same. Yes, it improves work efficiency in assembly work. Further, the insertion into the upper groove portion 41 side can be performed by aligning the position of the vertical beam 40 of the filter 15 with the guide rib 33 of the filter feed shaft 28, so that the position of the filter 15 is shifted or bent and cannot be set normally. It prevents such things.

  The automatic cleaning operation of the filter 15 is performed every time after the end of the operation of the indoor unit 1 or before the operation, or periodically according to the accumulated operation time of the indoor unit, and the waste accumulated in the dust box body 22 is discarded. It varies depending on conditions such as the amount of dust floating in the room and the capacity of the dust box main body 22, and is appropriately performed once a year to once every 10 years.

  The case where the automatic cleaning operation is performed after the operation of the indoor unit 1 will be described. First, when the operation of the indoor unit 1 is completed and the refrigeration cycle is stopped and the blower fan 12 is stopped, the two motors of the drive unit 31 are operated. 31a starts rotating, and this rotation is transmitted to the filter feed shaft 28 and the brush 24. The rotation of the filter feed shaft 28 causes the S-shaped portion from the filter 15 sandwiched between the filter feed shaft 28 and the filter presser 45. The dust adhered to the surface of the filter 15 is peeled off by the brush 24 while passing through the bent portion 42 and guided to the dust box body 22, and the entire filter 15 passes through the S-shaped bent portion 42 and moves to the lower groove portion 44 side. Due to the reverse rotation of the motor 31a, the surface of the filter 15 is cleaned once again, returning to the normal position on the upper groove 41 side, and the automatic cleaning is finished.

In this way, the filter moving path 27 for automatically cleaning the filter 15 is formed in an S-shape, and the moving path 27 is integrated into the front cover 3 so that the depth dimension of the air conditioner is reduced and made compact. We were able to.
Further, by providing the dust box 17 for storing the dust removed from the filter 15 in front of the S-shaped bent portion 42, the dust attached to the filter 15 can be efficiently collected in the front, and the dust box is removed. It will also be easy.

2 Body casing 3 Front cover 4 Open panel 6 Suction port 7 Air outlet 9 Heat exchanger 15 Filter 16 Space 17 Dust box 19 Left long hole 21 Right long hole 24 Brush 26 Groove 27 Moving path 28 Filter feed shaft 30 Feed shaft protrusion 33 Guide rib 34 Suction port vertical bar 35 Suction port horizontal bar 37 Rail-like convex part 42 S-shaped bent part 55 Vertically long plate-like protrusion 56 Slide lever

Claims (2)

The indoor unit that constitutes the casing with the main body casing, the front cover, and the open panel has a suction port on the top surface and a blowout port on the front or bottom surface, and the indoor air sucked from the suction port along the inner surface side of the suction port After passing through the provided filter, heat exchange with a heat exchanger and blown out from the outlet,
A moving path for moving the filter is provided, and an S-shaped bent portion is formed between the open panel and the heat exchanger, and the filter moving device and a dust box for cleaning the filter are provided in the moving path. An air conditioner in which the moving path is integrated into a front cover.   The air conditioner according to claim 1, wherein a filter moving device is provided on the back side of the S-shaped bent portion, and a dust box is provided on the front side of the S-shaped bent portion.

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