JP2012145248A - Air-blowing apparatus and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a suction grill from falling in an air-blowing apparatus provided with a decorative panel with an elevating mechanism for the suction grill.SOLUTION: The air-blowing apparatus includes a decorative panel 7 that includes a suction grill 10 beneath a unit body 2, a rotary drum 12 that is provided on the decorative panel and is rotated/driven in normal and reverse directions, a lifting wire 13 whose one end is wound around the rotary drum and the other end is fixed onto the decorative panel to support the grill in freely elevating manner, and a guide 14 that is provided to be attachable/detachable to/from the suction grill and allows the lifting wire to pass therethrough. In such a structure, the suction grill includes a falling preventive member 30 surrounding the lifting wire, and when the suction grill is removed from a support of the lifting wire, it is supported by the lifting wire by means of the falling preventive member.

Description

  The present invention relates to a blower provided on a ceiling and an air conditioner.

  2. Description of the Related Art Conventionally, in a ceiling-embedded air conditioner in which a decorative panel is attached to the lower part of a unit body, a rotary drum is provided, and the other end of a suspension wire, one end of which is wound around the rotary drum, is connected to a suction grill. There is an apparatus that supports the grille so that it can be raised and lowered, and raises and lowers the suction grille by driving a motor to facilitate attachment and removal of the suction grille (for example, Patent Document 1).

Japanese Patent No. 3034825

  However, the above-mentioned patent document discloses a gap in which the guide wire is supported by the guide support portion by dropping the suspension wire from the guide groove when an unexpected external force is applied to the guide due to, for example, an incorrect operation or an earthquake. There is a possibility that the hanging wire may come off. In addition, since the guide support portion is removable from the suction grille, the suspension wire may be detached from the suction grille together with the guide support portion.

  An object of the present invention is to prevent the suction grill from falling.

  In order to solve the above-described problems, the present invention provides a decorative panel having a suction grill at a lower portion of a unit main body, a rotating drum provided on the decorative panel and driven to rotate forward and backward, and one end wound around the rotating drum. In a blower device comprising: a suspension wire, the other end of which is fixed to the decorative panel, and supports the suction grill so as to be movable up and down; and a guide that can be attached to and detached from the suction grill and through which the suspension wire passes. The suction grill includes a fall prevention member that surrounds the suspension wire, and the suction grill is supported by the suspension wire via the fall prevention member when the suction grill is detached from the support of the suspension wire. Features.

  According to the present invention, the suction grill can be prevented from falling.

The sectional side view which shows the state which the suction grille concerning the Example of this invention fell. The perspective view which shows the principal part in case the number of the suspension wires of the raising / lowering mechanism of the suction grill which concerns on the Example of this invention is two. The side view which shows the principal part of the raising / lowering mechanism of the suction grill concerning the Example of this invention. The perspective view which shows the principal part in case the suspension wire of the raising / lowering mechanism of the suction grill concerning the Example of this invention is one. The fragmentary sectional view around the guide according to the embodiment of the present invention. The partial top view of the guide periphery which concerns on the Example of this invention. The perspective view when one guide part of conventional embodiment remove | deviates. The perspective view when the guide part 2 location of the conventional embodiment remove | deviated. The partial perspective view of the suction grille fall prevention structure concerning the example of the present invention. The perspective view of the suction grille fall prevention structure when one guide support part which concerns on the Example of this invention remove | deviates. The fragmentary sectional view when the guide support part which concerns on the Example of this invention remove | deviates. The fragmentary sectional view when the guide support part which concerns on the other Example of this invention remove | deviates.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is a side sectional view showing a state in which the suction grille according to the embodiment is lowered, FIG. 2 is a perspective view showing the main part of the lifting mechanism of the suction grill, FIG. 3 is a side sectional view, and FIG. FIG. 5 is a partial sectional view of the periphery of the guide according to the embodiment, FIG. 6 is a partial top view of the periphery of the guide according to the embodiment, and FIG. 8 is a perspective view when the two guide portions are removed, FIG. 9 is a partial perspective view of the suction grille fall prevention structure according to the embodiment, and FIG. FIG. 11 is a partial cross-sectional view of the case where the guide support portion is removed.

  Hereinafter, an air conditioner will be described as an example. In FIG. 1, reference numeral 2 denotes a unit main body that is an indoor unit of an air conditioner, and is embedded in the back of a ceiling 1 in the room. Inside the unit main body 2, a heat exchanger 3, a drain pan 4, a blower 5, and a fan motor 6 are disposed, and a decorative panel 7 is detachably attached to the lower portion so as to cover the opening.

  A suction port 8 is formed at the center of the decorative panel 7, and blowout ports 9 are provided in two directions on both sides of the suction port 8 or in four directions on the periphery. A suction grille 10 is fitted to the suction port 8 (the state where the suction grille is raised. FIG. 1 shows the state where the suction grille is lowered), and a filter 11 is detachably attached to the suction grille 10 at the upper part thereof. It is attached to become.

  Next, an elevating mechanism for the suction grill will be described. 2 and 3, guides 20 are attached to the four corners of the suction grill 10, respectively. One end of each of the two suspension wires 13 is wound around a rotary drum 12 driven by a motor 21 via a guide 20, and the other end is fixed to the decorative panel 7, and supports the suction grill 10 to be movable up and down. ing. The guide 20 may not be a roller that rotates as shown in the figure.

  Each rotary drum 12 is driven by a reversibly rotatable motor 21 that is driven and controlled by a control unit (not shown), and the suspension wire 13 is unwound from or wound around the rotary drum 12 by this drive. Is raised and lowered. Normally, the suction grill 10 is stored in the decorative panel 7.

  When cleaning the filter 11 and the suction grill 10, the motor 21 is driven when the suction grill 10 is stored in the decorative panel 7. Then, by rotating the two motors 21 in the reverse direction, the suspension wires 13 are unwound from the respective rotary drums 12 and fed out, so that the suction grill 10 is lowered and suspended.

  When the suction grill 10 is lowered to a predetermined position, the drive of the motor 21 is stopped by operating a remote controller (not shown) or the like. After the suction grill 10 is lowered, the filter 11 can be removed and cleaned or washed.

  After the filter 11 is cleaned, if the filter 11 is installed again on the suction grill 10 and the motor 21 is driven again by operating the remote controller or the like, the suspension wire 13 is wound around the rotary drum 12 and the suction grill 10 rises. . Since the detector such as the micro switch 23 is attached to the decorative panel 7, the driving of the motor 21 can be automatically stopped when the suction grill 10 is stored in the suction port 8 of the decorative panel 7.

  FIG. 4 shows a case where the motor 21 shown in FIG. 2 is used, and in this case, the number of the suspension wires 13 can be one.

  Next, an embodiment of a structure for removing the suction grill 10 will be described with reference to FIGS. The bridge-shaped pedestal 31 protruding on the suction grill 10 has openings 101 and 102 having steps on the upper and lower sides as shown in the figure. When the suction grill 10 is attached, first, a guide support for supporting the guide 20 is provided. The part 22 is inserted through the opening 101 while being rotated 90 degrees horizontally from the normal state. The guide support portion 22 inserted from the opening 101 rotates backward by approximately 90 degrees horizontally by the tension of the suspension wire 13 and is attached to the opening 102 by the weight of the suction grill 10. As a result, the guide support portion 22 is supported by the suction grill 10. When removing the suction grill 10, the guide support portion 22 accommodated in the opening 102 is rotated 90 degrees horizontally, and the guide support 22 is removed from the opening 101.

  The pedestal 31 is fixed to the suction grill 10 so that it cannot be removed. As shown in the figure, in a normal state, a predetermined gap 32 a exists between the suspension wire 13 stretched between the guides 20 and the base 31. If the guide 20, guide support 22 and pedestal 31 are the same member at each corner of the suction grill 10, the gap 32a is almost the same at any corner. It is desirable that the gap 32a does not change much when the suction grill 10 is raised and lowered.

  Further, a fall prevention wire (fall prevention member) 30 is provided around the base 31 and the suspension wire 13 so as to pass through the base 31 and straddle the suspension wire 13. The fall prevention wire 30 surrounds the pedestal 31 and the suspension wire 13 with a margin so as not to cause friction with the suspension wire 13 when the suction grill 10 is raised and lowered.

  Since the fall prevention wire 30 can be attached / detached by the attaching / detaching portion 33, the guide support portion 22 is removed from the base 31 and the annular fall preventing wire 30 is opened by the attaching / detaching portion 33, whereby the suction grill 10 is removed and maintenance is performed. Etc.

  With reference to FIG. 7, FIG. 8, the case where the suspension wire 13 comes off from the suction grill 10 is demonstrated. When the suspension wire 13 is detached and the suction grille 10 cannot be supported, first, the suspension wire 13 is dropped from the groove of the guide 20, and the suspension wire 13 is removed from the gap where the guide 20 is supported by the guide support portion 22. It may come off. Since the guide 20 needs to rotate, only the rotation shaft of the guide 20 is fitted to the guide support portion 22, and the guide 20 and the guide support portion 22 are not fixed by adhesion or welding. Absent. Therefore, if the suction grill 10 is tilted up and down or a large external force is applied to the guide 20, the guide 20 may be detached from the guide support portion 22 and the suspension wire 13 may be detached.

  Moreover, since the guide support part 22 can be removed, the guide support part 22 may come off. As described above, since the suction grill 10 can be moved up and down, the suspension wire 13 may come off and the suction grill 10 may not be supported.

  FIG. 7 shows a case where one of the two suspension wires 13 is detached from one guide 20c. The normal suspension wire 13 has two points at both ends fixed by a rotating drum 12 (not shown) and a decorative panel 7 (not shown), and two intermediate points are slidably supported by guides 20a and 20b. Supported by dots. The suspension wire 13 removed from one guide 20c is fixed at both ends in the same manner as the normal suspension wire 13, but is supported by a total of three points because it is slid and supported by the guide 20d only in the middle. ing. Since the two rotary drums 12 feed out the suspension wire 13 having the same length, the position of the suction grill 10 on the side where the suspension wire 13 is supported at three points is lowered. Since the suction grille 10 of the part of the guide 20c that has been detached is not supported at all, the position is further lowered. FIG. 8 shows a state in which the suspension wire 13 is further detached from the guide 20d.

  The suction grill 10 does not fall unless all four guides 20 or the guide support portions 22 are detached, but if one portion is removed, the other guide 20 or the guide support portion 22 is impacted, and the suspension wire 13 is removed therefrom. It becomes easy to come off. Even if the impact is small, tilting the suction grill 10 causes a similar disconnection.

  Even when the suction grill 10 is moved up and down by one suspension wire 13 as shown in FIG. 4, for example, if the suspension wire 13 is detached from the guide 20c, the heights of all the guides 20a, 20b, and 20d change and the suction grill 10 10 tilts. That is, when the number of suspension wires 13 (one or two in the present embodiment) is smaller than the number of support portions (four in the present embodiment) of the suction grill 10, the suspension wire 13 is disconnected. The above problems can occur.

  The fall prevention structure will be described with reference to FIGS. The suction grill 10 is suspended through a suspension wire 13 by a guide 20 fitted in the guide support portion 22. The fall prevention wire 30 surrounds the suspension wire 13 and is attached to the bridge-shaped member protruding from the suction grill 10 as shown in the figure, and supports the suction grill 10 and the suspension wire 13.

  In this embodiment, a bridge-shaped member is used as a pedestal on which the guide support portion 22 is installed, and a string-like fall prevention wire 30 is attached. However, the present invention is not limited to this. Instead of passing through the pedestal 31, the fall prevention wire 30 may be fixed to the pedestal 31, or even if it is not the pedestal 31, the fall prevention wire 30 may be fixed to the suction grill 10 and integrated with another member. You may attach by penetrating. In a normal state, the suction grill 10 (the guide 20 or the detachable guide support portion 22) is supported by the suspension wire 13, but apart from this, the suspension wire 13 is detached from the guide 20, or the guide support portion. A member is provided to prevent the suspension wire 13 and the suction grill 10 from being separated greatly when 22 itself is detached. That is, the suction grill 10 (a member fixed to the suction grill 10) is supported by the suspension wire 13 via the fall prevention wire 30.

  Moreover, even if it is not the string-like fall prevention wire 30, it is sufficient if one end is connected to the suction grill 10 and the other end is connected to the suction grill 10 across the suspension wire 13.

  With reference to FIGS. 10 and 11, the case where the fall prevention wire 30 is attached will be described taking the case where the guide support portion 22 is detached from the suction grill 10 as an example. When the guide 20 or the guide support portion 22 is detached from the suction grill 10, the fall prevention wire 30 is caught by the suspension wire 13, and the suspension wire 13 is supported by the base 31 (suction grill 10) via the fall prevention wire 30. The suction grill 10 can be prevented from falling.

  If one drop prevention wire 30 is provided for each suspension wire 13, the suction grill 10 can be prevented from falling. However, if it is provided at the four corners that are the support portions of the suction grill 10 (two drop prevention wires 30 per one suspension wire 13), the fall prevention wire is formed at the upper part of the guide 20 or the like regardless of the portion where the suspension wire 13 is detached. 30 supports the suspension wire 13.

  According to this, the gap 32b in the abnormal state as shown in FIG. 11 is not so different from the gap 32a in the normal state. That is, the suction grill 10 does not tilt greatly. When the suction grill 10 is raised and lowered, the height of the suction grill 10 (the length of the suspension wire 13) changes from moment to moment. Therefore, in order to keep the corners where the suspension wire 13 is removed and the corners where the suspension wire 13 is not detached among the corners of the suction grill 10 at any elevation position of the suction grill 10, the guide 20 in a normal state is used. Alternatively, the support function by the guide support portion 22 is configured to be replaced by the fall prevention wire 30 in an abnormal state. According to this, the support position and the number of support locations of the suspension wire 13 in a normal state can be maintained, and the suction grill 10 does not tilt greatly. Therefore, as described above, the other guides 20 and the like are not impacted.

  In some cases, the suction grill 10 is not removed, but is simply lowered to wipe off dirt on the operator's head. In that case, since the suction grill 10 is viewed from below, the portion where the suspension wire 13 is detached is not seen. Therefore, it is preferable that the suction grill 10 does not tilt from the horizontal position. However, even if the suction grill 10 is slightly tilted, the operator can recognize the abnormality visually.

  In most cases, the suction grill 10 is dropped rather than the suspension wire 13 is cut off. The suspension wire 13 is detached from the guide 20 or the guide support portion 22 itself is detached.

  FIG. 12 is a partial cross-sectional view when the guide support portion of another embodiment is detached. In this embodiment, the pedestal 31 is omitted, and the suction grill 10 is provided with openings 101 and 102 so that the suction grill 10 and the guide support 22 can be attached and detached. In this case, as shown in the figure, the fall prevention wire 30 may be directly fixed to the suction grill 10, and the fall prevention wire 30 penetrates another member fixed to the suction grill 10 or a protruding member integrated with the suction grill 10. Or you may fix and attach. Further, the opening 102 of the suction grill 10 may penetrate to the lower surface of the suction grill 10.

  Although the example of the air conditioner has been described above, any air conditioner may be used as long as it has a grill that can be moved up and down using a wire at the lower part of the housing. Further, the unit body 2 is not limited to be embedded in the back of the ceiling, but may be suspended from the ceiling surface.

DESCRIPTION OF SYMBOLS 1 Ceiling 2 Unit main body 3 Heat exchanger 4 Drain pan 5 Blower 6 Fan motor 7 Cosmetic panel 8 Suction port 9 Suction port 10 Suction grill 11 Filter 12 Rotating drum 13 Hanging wire 20 (20a-20d) Guide 21 Motor 22 (22a-22d) ) Guide support 23 Micro switch 30 Fall prevention wire (fall prevention member)
31 Pedestal 32a, 32b Gap 33 Attachment / detachment part 101, 102 Opening part

Claims (5)

A decorative panel having a suction grill at the lower part of the unit main body, a rotating drum provided on the decorative panel and driven to rotate forward and backward, one end wound around the rotating drum and the other end fixed to the decorative panel, the suction In a blower device comprising a suspension wire that supports the grill so that it can be moved up and down, and a guide that can be attached to and detached from the suction grill and through which the suspension wire is passed,
The suction grille includes a fall prevention member surrounding the suspension wire,
When the suction grill is detached from the support of the suspension wire, the suction grill is supported by the suspension wire via the fall prevention member.   The blower according to claim 1, wherein the fall prevention member is formed of a wire and penetrates or is fixed to a member protruding from the suction grill, and one end of the wire is detachably connected to the other end. apparatus.   2. The air blower according to claim 1, wherein the fall prevention member is formed of a wire and is fixed to the suction grill, and one end of the wire is detachably connected to the other end.   4. The air blower according to claim 1, wherein the fall prevention member is provided at each of the four corners of the suction grill.   The blower according to any one of claims 1 to 4, a blower provided in the unit main body on the air downstream side of the decorative panel, and a heat exchanger into which air blown from the blower flows. An air conditioner comprising:

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