JP2006023029A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner enabling a worker to safely perform a maintenance work while preventing increase in manufacturing cost. <P>SOLUTION: One end of a maintenance panel 2 is rotatably attached to a lower portion of a main body 1, and the other end is engagingly locked to the main body 1 by a releasable push latch 7. When the other end of the maintenance panel 2 is rotated to leave the main body 1, a linear motion damper 3 brakes the rotation of the maintenance panel 2. The maintenance panel 2 is detachably provided with a filter 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner installed on a ceiling or the like.

  Conventionally, as an air conditioner, there is one described in Patent Document 1 (Japanese Patent Laid-Open No. 2001-133006). This air conditioner includes a casing installed behind the ceiling and a filter unit accommodated in the casing. And the said filter unit is supported by the casing so that raising / lowering is possible by a telescopic expansion-contraction mechanism.

  According to the air conditioner having the above configuration, the operator performs maintenance work on the filter unit after pulling down the filter unit using the hook bar. Thus, since the said operator can maintain a filter unit in a low place, it can maintain a filter unit safely.

  In the air conditioner, when the operator pulls down the filter unit, the lifting mechanism pulls the filter unit upward with a force substantially equal to the weight of the filter unit. Thereby, since the said operator can pull down a filter unit slowly, it can maintain a filter unit more safely.

  However, in the above-described conventional air conditioner, when the operator pulls the filter unit with a large force, the filter unit may drop down vigorously, possibly causing injury to the operator.

In addition, since a mechanism for pulling the filter unit upward with a force substantially equal to the weight of the filter unit is provided, the structure for raising and lowering the filter unit becomes complicated and the manufacturing cost increases.
JP 2001-133006 A

  Then, the subject of this invention is providing the air conditioner which an operator can perform a maintenance operation | work safely and can prevent the increase in manufacturing cost.

In order to solve the above problems, the air conditioner of the present invention is
The body,
One end of the main body is pivotably attached to the lower part of the main body, and the maintenance panel is locked to the main body by a locking means capable of releasing the other end,
A damper for braking the rotation of the maintenance panel that rotates so that the other end is separated from the main body;
And a filter that is detachably mounted on the maintenance panel.

  According to the air conditioner having the above configuration, when performing maintenance of the filter, the operator operates the locking means using a bar or the like to release the locking between the maintenance panel and the main body. Then, the maintenance panel swings by gravity around one end, and the other end of the maintenance panel is detached from the main body and is suspended from the main body at one end. At this time, since the damper applies braking to the swing of the maintenance panel, the maintenance panel swings slowly.

  As a result, it is possible to prevent the maintenance panel from swinging vigorously and colliding with the worker, so that the worker can safely perform the filter maintenance work.

  Since the maintenance panel is suspended from the main body at one end, the operator can remove the filter from the maintenance panel at a relatively low position and repair the filter safely and easily.

  In addition, since the worker can work at a relatively low position and does not have to climb to a tall stepladder, there is no need to have another person press the stepladder. Therefore, the number of people required for the maintenance work can be reduced.

  The above filter is restored as follows.

  A filter is attached to the maintenance panel, and the maintenance panel is rotated about one end to lock the maintenance panel to the main body.

  In the above invention, since the damper and the locking means are only provided, the maintenance panel opening / closing structure is not complicated. Therefore, an increase in manufacturing cost can be prevented.

  In the air conditioner of one embodiment, the locking means can be unlocked by a one-touch operation.

  According to the air conditioner of the above-described embodiment, the maintenance panel and the main body can be locked by a one-touch operation using a long bar or the like, so that it is possible to reduce the labor required for the filter maintenance work.

  In the air conditioner according to the present invention, the maintenance panel swings slowly when the damper brakes the swing of the maintenance panel due to gravity, so that the maintenance panel does not swing vigorously and hit an operator or the like. , Safety during maintenance of the operator can be improved.

  Further, since only the damper and the locking means are provided, the maintenance panel opening / closing structure is not complicated, and an increase in manufacturing cost can be prevented.

  Since the air conditioner of one embodiment can release the locking by the locking means by a one-touch operation, the maintenance panel at a high place can be easily lowered by operating the locking means using a long bar or the like. it can.

  Hereinafter, the air conditioner of the present invention will be described in detail with reference to the illustrated embodiments.

  In FIG. 1, the schematic cross section of the air conditioner of one embodiment of this invention is shown.

  The air conditioner includes a main body 1, a maintenance panel 2 having one end attached to the lower portion of the main body 1 via a rotation shaft 5, and a damper that applies braking to the maintenance panel 2 that rotates away from the main body 1. As an example, a direct acting damper 3 and a filter 4 detachably mounted on the upper surface of the maintenance panel 2 are provided.

  The maintenance panel 2 can be positioned as indicated by a two-dot chain line by rotating about the rotation shaft 5. A connection fitting 6 is provided at one end of the maintenance panel 2. A push latch 7 as an example of a locking means is attached to the other end of the maintenance panel 2. A filter stopper 8 that locks the filter 4 is rotatably provided at the other end of the maintenance panel 2.

  The direct acting damper 3 includes a cylinder 11 in which a liquid, a gas, or a mixture thereof is sealed, and a piston rod 12 having one end inserted into the cylinder 11 and reciprocating linearly in the cylinder 11. is doing. An end of the cylinder 11 on the push latch 7 side is rotatably connected to the main body 1. On the other hand, the other end of the piston rod 12 (the end opposite to the cylinder 11) is rotatably connected to the connection fitting 6. That is, one end portion of the linear motion damper 3 is rotatably connected to the main body 1, and the other end portion of the linear motion damper 3 is rotatably connected to the connection fitting 6. . The linear motion damper 3 is well known, and the chambers on both sides of the piston rod 12 (not shown) of the piston rod 12 communicate with each other through a passage having a throttle and a passage having a check valve so that the piston rod 12 contracts. When the check valve is closed, a large resistance is applied by the action of the throttle, and when the piston rod 12 is extended, the check valve is opened so that no resistance is applied.

  FIG. 2 is a schematic cross-sectional view of the maintenance panel 2 and the filter 3 cut along a plane different from that in FIG.

  A filter rail 9 for guiding the filter 4 is provided on the upper surface of the maintenance panel 2. Between the filter rail 9 and the upper surface of the maintenance panel 2, a flange 4 a provided on the side of the filter 4 is located.

  FIG. 3 shows a schematic cross-sectional view of the push latch 7.

  The push latch 7 is guided to the case 21 so as to be movable only in the lateral direction, the button 21 that is guided by the case 21 and can be moved only in the vertical direction, and the case 21. The ratchet 24 is engaged with the engaging portion 1a (see FIG. 1) of the main body 1 by the lower surface 24b of the tip portion. The coil spring 22 urges the ratchet 24 to protrude from the case 21. Further, the ratchet 24 is provided with a through hole 25 penetrating vertically. The wall surface, that is, the inclined surface 25 a on the coil spring 22 side of the through hole 25 is inclined with respect to the upper surface and the lower surface of the ratchet 24, and the wall surfaces other than the inclined surface 25 a of the through hole 25 are substantially perpendicular to the upper surface and the lower surface of the ratchet 24. It has become. The upper end of the button 23 is inserted into the through hole 25. An inclined surface 23 a at the upper end of the button 23 is inclined so as to be parallel to the inclined surface 25 a of the ratchet 24.

  When the button 23 is pressed, the ratchet 24 moves backward against the biasing force of the coil spring 22 due to the cam action of the inclined surface 23 a of the button 23 and the inclined surface 25 a of the ratchet 24. When the button 23 is released, the ratchet 24 protrudes from the case 21 due to the biasing force of the coil spring 22, and the button 23 protrudes from the case 21 due to the cam action of the inclined surfaces 23a and 25a. The button 23 and the ratchet 24 are provided with an engaging portion (not shown) for preventing the button 23 and the ratchet 24 from falling off the case 21.

  The filter 4 of the air conditioner having the above configuration is maintained as follows.

  First, the operator pushes the button 23 with, for example, a pressing bar to release the engagement between the lower surface 24 b of the tip end portion of the ratchet 24 and the engaging portion 1 a of the main body 1. Then, the maintenance panel 2 is swung by gravity around the rotation shaft 5, the end of the maintenance panel 2 on the push latch 7 side is detached from the main body 1, and as shown by a two-dot chain line in FIG. It will be in the state suspended by the main body 1 with the rotating shaft 5. FIG. At this time, the direct acting damper 3 brakes the swinging of the maintenance panel 2, so that the maintenance panel 2 swings slowly. Even when the maintenance panel 2 is in the state shown by the two-dot chain line in FIG. 1, the filter 4 is locked by the filter stopper 8, and therefore does not fall from the maintenance panel 2.

  Next, the worker ascends to a relatively short base (for example, a base having a height of about 0.5 m), grasps the knob 8a of the filter stopper 8 shown in FIG. 4, and rotates the filter stopper 8. . Thereby, the locking of the filter stopper 8 and the filter 4 is released.

  Next, the worker pulls out the filter 4 from the maintenance panel 2 in the direction indicated by the arrow in FIG.

  Finally, the operator gets the filter 4 down from the table and repairs the filter 4 on the floor.

  As described above, since the direct acting damper 3 brakes the swinging of the maintenance panel 2, the maintenance panel 2 swings slowly, so that the maintenance panel 2 and the operator can be prevented from colliding. Therefore, the operator can perform the maintenance work of the filter 4 safely.

  Further, since the maintenance panel 2 is in a state as shown by a two-dot chain line in FIG. 1, the operator removes the filter 4 from the maintenance panel 2 at a relatively low position, and repairs the filter 4 safely and easily. be able to.

  In addition, the above worker can work at a relatively low position and does not have to climb to a tall stepladder (for example, a stepladder having a height of, for example, about 1.5 m). There is no. Therefore, the number of people required for the maintenance work can be reduced.

  Further, since the maintenance panel 2 swings automatically due to gravity, the operator does not need to apply a force to the maintenance panel 2. Therefore, fatigue caused by the maintenance work can be reduced.

  Further, since the engagement between the maintenance panel and the main body can be released simply by pressing the button 23, the labor required for the maintenance work can be further reduced.

  The filter 4 is restored as follows.

  First, the filter 4 is attached to the maintenance panel 2, the filter stopper 8 is rotated, and the filter stopper 8 is locked to the filter 4.

  Next, the end of the maintenance panel 2 on the push latch 7 side is pushed upward by a pressing bar, for example, and the maintenance panel 2 is rotated about the rotation shaft 5. At this time, since the direct acting damper 3 does not brake the rotation of the maintenance panel 2, the operator can smoothly rotate the maintenance panel 2.

  Subsequently, when the maintenance panel 2 is further rotated, the tip end portion of the ratchet 24 comes into contact with the locking portion 1a of the main body 1, and the ratchet 24 is moved by the cam action of the inclined surface 24a and the locking portion 1a. Retreat against the force. Then, the ratchet 24 protrudes from the case 21 by the urging force of the coil spring 22 after exceeding the locking portion 1a, and the lower surface 24b of the tip portion is locked to the locking portion 1a.

  As described above, since the lower surface 24b of the tip end portion of the ratchet 24 is locked to the locking portion 1a only by pushing the end of the maintenance panel 2 on the push latch 7 side upward with, for example, a pressing bar, the filter 4 is restored. Can be done easily.

  Moreover, since the said air conditioner only provides the direct acting damper 3 and the latching means, the opening / closing structure of the maintenance panel 2 does not become complicated. Therefore, an increase in manufacturing cost can be prevented.

  In the above embodiment, the direct acting damper 3 is used. However, a rotor damper 103 as shown in FIG. 5 may be used. Even when this rotor type damper 103 is used, the same effect as the above embodiment can be obtained, and the opening / closing structure of the maintenance panel 2 can be simplified as compared with the above embodiment. Further, since the connection fitting 6 need not be used, the manufacturing cost can be reduced.

  The rotor-type damper 103 is also well known, and brakes the maintenance panel 2 when the maintenance panel 2 is opened, and does not brake the maintenance panel 2 when the maintenance panel 2 is closed.

FIG. 1 is a schematic cross-sectional view of an air conditioner according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the maintenance panel and filter of the air conditioner. FIG. 3 is a schematic cross-sectional view of a push latch of the air conditioner. FIG. 4 is an enlarged schematic view of the main part of the filter. FIG. 5 is a schematic cross-sectional view of a modification of the air conditioner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Maintenance panel 3 Direct acting type shock absorbing damper 4 Filter 7 Push latch 11 Cylinder 12 Piston rod 12
21 Case 22 Coil spring 23 Button 24 Ratchet 103 Rotor damper

Claims (2)

The body (1),
A maintenance panel (2) having one end rotatably attached to the lower portion of the main body (1) and locked to the main body (1) by a locking means (7) capable of releasing the other end;
A damper (3) for braking the rotation of the maintenance panel (2) that rotates so that the other end is separated from the main body (1);
An air conditioner comprising: a filter (4) detachably mounted on the maintenance panel (2). In the air conditioner according to claim 1,
The air conditioner characterized in that the locking means (7) can be unlocked by a one-touch operation.

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