JP2011127895A - Ceiling-embedded air conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase a degree of freedom in handling hanging ropes, in a ceiling-embedded air conditioning device in which a suction grille can be moved up and down through the hanging ropes. <P>SOLUTION: In this ceiling-embedded air conditioning device in which a center panel is disposed movably up and down through the hanging ropes 19A, 19B, 19C, 19D taken up and out by a lifting and lowering device 23, the lifting and lowering device 23 includes a horizontally-long outer case receiving taking-up sections of the hanging ropes 19A-19D, and the horizontally-long outer case has rollers 45 capable of guiding the hanging ropes 19A-19D in one lateral direction of the outer case, and rollers 46 capable of guiding the hanging ropes 19A-19D in the other lateral direction of the outer case. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ceiling-embedded air conditioner provided with a suction grill so as to be movable up and down via a suspension rope.

Conventionally, in a ceiling-embedded air conditioner, a suction grille equipped with a filter that removes dust and the like of the suction air is suspended by a suspension rope (string), and the suction grill is lifted and lowered by winding and feeding the suspension rope. A filter that facilitates maintenance such as filter replacement work is known (for example, see Patent Document 1).
JP 10-148390 A

  In such a ceiling-embedded air conditioner, it is necessary to efficiently hang a hanging rope in order to realize a stable lifting operation. However, the handling position of the suspension rope is limited to the position of the lifting device that winds and feeds the suspension rope, the pulling direction of the suspension rope from the lifting device, and the like. For this reason, the handling of the suspension rope has to be decided for each specification of the ceiling-embedded air conditioner, and there is a problem that the efficiency is poor.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to increase the degree of freedom of handling of a suspension rope in a ceiling-embedded air conditioner that can raise and lower a suction grill via a suspension rope. .

  In order to solve the above-described problems, the present invention provides a horizontally long decorative panel in a main body in which a heat exchanger and a blower are housed, and the horizontally long decorative panel is provided with a hanging rope wound and fed out by a lifting device. In the ceiling-embedded air conditioner provided with a suction grill so that it can be lifted up and down, the lifting device is a horizontally long outer case that houses the winding portion of the suspension rope, and in the horizontally long outer case, A first roller capable of guiding a suspension rope wound and unwound by the winding unit in one short direction of the outer case at one end, and a short other direction of the outer case in the other end, Second rollers capable of guiding suspension ropes wound and unwound by the winding unit are arranged, and this outer case is closer to one end in the longitudinal direction of the horizontally long decorative panel. The suspension rope that is disposed on the outside of the outer case and wound and fed from the rollers at both ends of the outer case is connected in a loop shape along the laterally long direction of the horizontally long decorative panel to support the suction grille. It is said.

  Here, the suction grill is not limited to the one having a plurality of holes through which air passes. That is, it includes a so-called center panel that does not have a hole in itself and that forms a space through which air is passed to the side when it is raised to the upper end position.

  Furthermore, in the above invention, lower rope guides for guiding the suspension rope downward are provided at the four corners of the horizontally long decorative panel, and upper rope guides for guiding the suspension rope upward at the four corners of the suction grille, respectively. It is good also as composition which has.

  According to the present invention, in the ceiling-embedded air conditioner provided with the suction grille that can be lifted and lowered via the hanging rope, the exterior case serving as the lifting device is close to one end in the longitudinal direction of the horizontally long decorative panel. The hanging rope that is placed in the position and is wound up and fed out from the rollers at both ends of the outer case is connected in a loop along the horizontal direction of the horizontally long decorative panel to support the suction grill. In the short direction of the device, the hanging rope can be pulled out from any one of the two directions. Thereby, the freedom degree in handling of a suspension rope improves markedly. In addition, since the lifting device is disposed along the lateral end of the horizontally long decorative panel, the central portion of the decorative panel serves as an air circulation space, and an increase in ventilation resistance can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration of a ceiling-embedded air conditioner to which the present invention is applied.

  A decorative panel 9 having air outlets 7 at both ends is fixed to the lower end of the main body 1 of the ceiling-embedded air conditioner. The center of the decorative panel 9 opens in a substantially rectangular shape, and the heat exchanger 3 and the blower 5 are accommodated in the central opening. Further, a center panel 17 made of sheet metal is provided at the central opening of the decorative panel 9 so as to close the central opening so as to leave a space as the suction port 15 on both sides.

  As shown in FIGS. 1 and 2, the center panel 17 supports a filter 13 that purifies the intake air, and these are integrally moved up and down through four suspension ropes 19A, 19B, 19C, and 19D. Suspended freely.

  An elevating device 23 is disposed in the central opening of the decorative panel 9. The lifting device 23 has a horizontally long exterior case, and is attached in a direction in which the short direction of the exterior case and the longitudinal direction of the central opening substantially coincide. The lifting device 23 performs the winding operation and the feeding operation of the suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, and 19 </ b> D to raise and lower the center panel 17.

  As shown in FIG. 2, with the center panel 17 housed in the central opening of the decorative panel 9, air from the air inlets 15 formed on both sides of the center panel 17 as shown by arrows in FIG. Is sucked. Then, this air is purified through the filter 13, sucked into and discharged from the blower 5, exchanged heat through the heat exchanger 3, and then discharged into the room from the outlets 7 at both ends of the decorative panel 9. .

  The ceiling-embedded air conditioner according to the first embodiment moves up and down the center panel 17 that does not have a hole for allowing air to pass through the surface. As described above, the inlet 15 By forming this, it functions in the same way as a so-called suction grille. That is, in the first embodiment, a case where the center panel 17 is used as one aspect of the suction grill of the present invention is illustrated.

  As shown in FIG. 3, the lifting device 23 is placed and fixed on the inner panel 30 at a position close to one end in the longitudinal direction of the main body 1. The inner panel 30 is a resin panel exposed to the lower side in the central opening of the main body 1.

  As shown in FIG. 4, the main body side end of the lifting device 23 extends downward, and the tip thereof is bent to form a horizontal plane, and a screw hole 23 </ b> A is formed in the horizontal plane. A boss 31 as a screw receiving portion is disposed on the inner panel 30 corresponding to the screw hole 23A.

  As shown in FIG. 5, since a hole for receiving a screw is formed in the boss 31, the lifting device 23 is placed on the inner panel 30, and the position of the boss 31 and the screw hole 23A are aligned and screwed. The lifting device 23 is fixed.

  Here, the screw that fixes the lifting device 23 is exposed only on the upper surface of the inner panel 30, and the screw is not visible from the lower surface of the inner panel 30, that is, the surface exposed to the central opening of the decorative panel 9. There is an advantage that is not impaired.

  Then, as shown in FIG. 3, the suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, and 19 </ b> D are pulled out from the lifting device 23 to suspend the center panel 17. The four suspension ropes 19A, 19B, 19C, and 19D are all drawn out from one side surface of the lifting device 23 and guided substantially horizontally, and are then wound around the upper rope guide 22 attached to the inner panel 30.

  As shown in FIG. 6, the upper rope guide 22 has a pulley 22A around which the suspension ropes 19A, 19B, 19C, 19D are wound, and the suspension ropes 19A, 19B, 19C, 19D are guided downward by the pulley 22A. . The upper rope guide 22 has a collar 22B formed in a prismatic shape. The collar 22B is provided with a through hole. The suspension ropes 19A, 19B, 19C, and 19D guided by the pulley 22A are through holes of the collar 22B. Pulled through.

  As shown in FIG. 3, a guide attachment portion 33 for attaching the upper rope guide 22 is provided on the upper surface of the inner panel 30.

  As shown in detail in FIG. 9A, a boss 34 for receiving a screw is erected on the guide mounting portion 33, a rectangular recess is formed next to the boss 34, and a knockout hole 35 is formed on the bottom surface of the recess. . The knockout hole 35 has a circular rib and is closed before the main body 1 is assembled. When the upper rope guide 22 is attached, a hole is drilled inside the circular rib as shown in FIG. 9B. The

  As shown in FIG. 9C, the collar 22B of the upper rope guide 22 is fitted from above into the rectangular recess. Here, the base portion of the upper rope guide 22 is fixed to the inner panel 30 by screwing to the boss 34 through a screw hole formed in the base portion of the upper rope guide 22.

  When the upper rope guide 22 is attached to the guide attachment portion 33 in this way, the through hole of the collar 22B is exposed from the hole formed in the knockout hole 35, and the hanging ropes 19A, 19B, 19C, 19D are passed through this through hole. Is pulled down.

  As shown in FIG. 3, the suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, and 19 </ b> D guided downward by the upper rope guide 22 are related to the four lower rope guides 20 attached to the four corner portions of the center panel 17. Match. The suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, 19 </ b> D are changed in direction by the lower rope guide 20, extend along the longitudinal direction of the center panel 17, and are connected two by two.

  That is, the suspension rope 19A and the suspension rope 19C respectively guided by the two lower rope guides 20 facing the longitudinal direction of the center panel 17 are connected via the spring 21, and similarly, the suspension rope 19B and the suspension rope 19D. Are connected via a spring 21.

  As shown in FIGS. 6 and 7, hooks 50 are fixed to the ends of the suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, and 19 </ b> D, and the hooks 50 are hooked and fixed to the ends of the springs 21. 19A, 19B, 19C, 19D are connected to the spring 21.

  The action of the spring 21 has an advantage that when the center panel 17 is raised, the center panel 17 and the filter 13 are lifted in a horizontal state and can be reliably accommodated in the central opening of the decorative panel 9. That is, when the center panel 17 is tilted in the longitudinal direction and stored in the central opening of the decorative panel 9, a winding force acts on the hanging rope that is on the upper side due to the tilt of the center panel 17. The spring 21 is extended by this winding force. By extending the spring 21, the hanging rope that has become the lower side due to the inclination of the center panel 17 is wound up. By this operation, the inclination of the center panel 17 is gradually eliminated, and the center panel 17 and the filter 13 are accommodated in the central opening of the decorative panel 9 in a horizontal state.

  Further, the suspension rope 19A and the suspension rope 19C wound around the lower rope guide 20 and the suspension rope 19B and the suspension rope 19D are connected via a spring 21 to form a loop, respectively. It is suspended by two loops extending in the longitudinal direction. Therefore, even if the suspension rope constituting one loop is cut, the center panel 17 remains suspended by the other loop and does not fall. In this case, there is a possibility that the center panel 17 rotates and swings around the loop on the side where there is no abnormality, but the radius of rotation is equal to or less than the size of the center panel 17 in the short direction. The range of movement is minimized.

  Furthermore, when one of the suspension ropes 19A, 19B, 19C, 19D is cut, the end of the other suspension rope connected to the cut suspension rope via the spring 21 is released. When the fixed hook 50 and the spring 21 are caught by the lower rope guide 20, the hanging rope does not fall off the lower rope guide 20. Therefore, even if any one of the suspension ropes 19A, 19B, 19C, 19D is cut, the center panel 17 is suspended by the other three suspension ropes and quickly stops.

  Then, the structure of the raising / lowering apparatus 23 is demonstrated.

  As shown in the cross-sectional view of FIG. 6 and the front view of FIG. 7, the lifting device 23 has a horizontally long exterior case, and the drive unit 40 is provided in the exterior case. The drive unit 40 includes a pair of drive mechanisms 40A and 40B disposed at both ends in the longitudinal direction of the outer case. The drive mechanism 40A winds and unwinds the suspension ropes 19A and 19C, and the drive mechanism 40B winds and unwinds the suspension ropes 19B and 19D.

  The drive mechanism 40 </ b> A includes a motor 41 that rotates forward and backward according to control of a control unit (not shown), and a drive wheel train 42 that includes a plurality of gears that are rotated by the drive force of the motor 41. A pinion gear is fixed to the rotation shaft of the motor 41, and a bevel gear included in the drive wheel train 42 is engaged with the pinion gear, and the bevel gear rotates in the horizontal direction as the motor 41 rotates. The rotation of the bevel gear is transmitted to the winding unit 43 via another gear included in the drive wheel train 42.

  The winding portion 43 has a configuration in which a gear that meshes with a gear included in the drive wheel train 42, a bobbin that winds the suspension rope 19A, and a bobbin that winds the suspension rope 19C are coaxially stacked and fixed. And the two bobbins rotate together. The bobbin that winds up the suspension rope 19A and the bobbin that winds up the suspension rope 19C are at different height positions. The suspension rope 19A and the suspension rope 19C are pulled out in parallel from the bobbin, wound around the roller 44, and substantially perpendicular It is guided in a different direction and passes between a pair of rollers 45 and 46.

  On the other hand, a rope outlet 47 is provided on the front surface of the exterior case of the lifting device 23, that is, the surface facing the center of the central opening of the decorative panel 9. The rope outlet 47 has a through hole for pulling out the hanging rope from the drive unit 40 in the lifting device 23, and the rope takeout having two holes corresponding to the hanging ropes 19A and 19C on the drive mechanism 40A side. An outlet 47 is formed, and a rope outlet 47 having two holes corresponding to the hanging ropes 19B and 19D is also formed on the drive mechanism 40B side.

  Furthermore, a rope outlet 48 is provided on the opposite surface of the lifting device 23, that is, the back surface. The rope outlet 48 has a through hole for pulling out the hanging rope from the drive unit 40 in the lifting device 23, and the rope outlet having one hole corresponding to the hanging rope 19A on the drive mechanism 40A side. 48 is formed, and on the drive mechanism 40B side, a rope outlet 48 having one hole corresponding to the suspension rope 19B is formed.

  Thus, in the outer case of the lifting device 23, the rope outlet 47 is formed on one surface in the short direction, and the rope outlet 48 is formed on the other surface. 48, the ropes 19A, 19B, 19C and 19D can be pulled out as will be described later.

  Of the pair of rollers 45 and 46 provided in the drive mechanism 40A, the roller 45 as the first roller is positioned on the rope outlet 47 side with respect to the suspension ropes 19A and 19C, and the roller as the second roller 46 is located on the rope outlet 48 side.

  FIG. 8 is a cross-sectional view of the rollers 45 and 46. As shown in FIG. 8, guide grooves 45 </ b> A and 45 </ b> B are formed on the circumferential surface of the roller 45 in order from the top at different height positions. For example, when the suspension rope 19C is wound around the upper bobbin of the winding portion 43 and the suspension rope 19A is wound around the lower bobbin of the winding portion 43, the guide groove 45A may wind the suspension rope 19C. The guide groove 45B is at a height position where the suspension rope 19A can be wound. Therefore, when both the suspension ropes 19A and 19C are wound around the roller 45 at the same time, the suspension ropes 19A and 19C are individually guided so as not to contact each other on the circumferential surface of the roller 45, and the suspension ropes 19A and 19C are surely wound up.・ You can pay out.

  A guide groove 46A is formed on the peripheral surface of the roller 46 in accordance with the height position of the suspension rope 19A, and the suspension rope 19A can be wound around the guide groove 46A.

  Thus, the roller 45 of the drive mechanism 40A guides the suspension ropes 19A and 19C in one short direction of the exterior case of the lifting device 23, and the roller 46 extends in the other direction of the short side of the exterior case of the lifting device 23. Guide the hanging rope 19A. That is, the suspension rope 19A can be guided to the rope outlet 47 through the guide groove 45B of the roller 45, or can be guided to the rope outlet 48 through the guide groove 46A of the roller 46. 19C is guided to the rope outlet 47 through the guide groove 45A.

  The suspension ropes 19 </ b> A and 19 </ b> C are both wound around the roller 45, changed in direction substantially at a right angle, guided, and pulled out from the rope outlet 47.

  Further, a partition plate 49 is disposed along the line from the roller 46 to the rope outlet 48 in the drive mechanism 40A. The partition plate 49 guides one of the suspension ropes 19 </ b> A and 19 </ b> C extending from the roller 46 to the rope outlet 48 so as not to contact the winding portion 43.

  Further, a rope breakage detector 51 is disposed between the roller 44 and the rollers 45 and 46. The rope breakage detector 51 has two plates corresponding respectively to the suspension ropes 19A and 19C. The two plates are formed with through holes through which the suspension ropes 19A and 19C are passed. The individual plates are biased toward the suspension ropes 19A and 19C. In addition, the rope breakage detection unit 51 has a switch that is turned ON / OFF according to the positions of the two plates.

  When the suspension ropes 19A and 19C are both connected to the spring 21 and are stretched without slack, the urging force of the plate body and the tension of the suspension ropes 19A and 19C resist and the edge of the through hole of the plate body is suspended. Stabilizes in contact with the ropes 19A, 19C. When the suspension rope 19A is cut here, the plate body in contact with the suspension rope 19A is moved by the biasing force, and the switch is switched by this movement. Similarly, when the suspension rope 19C is cut, the plate body in contact with the suspension rope 19C moves, and the switch is switched by this movement. Therefore, the abnormality of the suspension ropes 19A and 19C can be detected by detecting the ON / OFF state of the switch provided in the rope breakage detection unit 51 by the control unit (not shown).

  Similarly to the drive mechanism 40A, the drive mechanism 40B includes a motor 41, a drive wheel train 42, a winding unit 43, rollers 44, 45, 46, and the like, and is arranged at the center in the longitudinal direction of the exterior case of the lifting device 23. On the other hand, it is configured symmetrically with the drive mechanism 40A. Hanging ropes 19B and 19D are wound around the bobbin of the winding portion 43 of the drive mechanism 40B, and these hanging ropes 19B and 19D pass between the rollers 45 and 46. The suspension rope 19B is wound around the roller 45 and pulled out from the rope outlet 47, or is wound around the roller 46 and pulled out from the rope outlet 48. The suspension rope 19 </ b> D is pulled out from the rope outlet 47 through the roller 45.

  The elevating device 23 configured as described above feeds the suspension ropes 19A, 19B, 19C, and 19D by rotating the two motors 41 included in the drive mechanism 40A and the drive mechanism 40B in the normal direction (or reverse direction), thereby extending the center. The panel 17 can be lowered, and further, the center panel 17 can be raised by winding the suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, and 19 </ b> D by rotating the motor 41 in reverse (or forward).

  As described above, in the lifting device 23, it is possible to pull out the hanging ropes 19A, 19B, 19C, 19D in one short direction of the outer case, and the hanging ropes 19A, 19B are shorter than the outer case. It can be pulled out in the other direction, and the degree of freedom in handling the suspension rope is extremely high. For this reason, in this 1st Embodiment, if 4 suspension ropes 19A, 19B, 19C, and 19D are pulled out from the rope outlet 47 formed in the one side surface of the raising / lowering apparatus 23, from the raising / lowering apparatus 23 The suspension ropes 19 </ b> A, 19 </ b> B, 19 </ b> C, and 19 </ b> D can be efficiently routed up to the lower rope guide 20 disposed at the four corners of the center panel 17.

1 is a perspective view showing a schematic configuration of a ceiling-embedded air conditioner according to a first embodiment to which the present invention is applied. It is a cross-sectional view of the main body of a ceiling-embedded air conditioner. It is a principal part perspective view which shows the suspended state of a center panel. It is a principal part disassembled perspective view which shows the attachment state of a raising / lowering apparatus. It is a perspective view which expands and shows the principal part of an inner panel. It is sectional drawing which shows the structure of a raising / lowering apparatus. It is a front view which shows the structure of a raising / lowering apparatus. It is sectional drawing which shows the structure of the roller which an raising / lowering apparatus has. It is a perspective view which expands and shows the principal part of an inner panel.

DESCRIPTION OF SYMBOLS 1 Main body 9 Cosmetic panel 13 Filter 17 Center panel 19A, 19B, 19C, 19D Hanging rope 20 Lower rope guide 22 Upper rope guide 23 Lifting device 30 Inner panel 31 Boss (screw receiving part)
33 Guide mounting portion 35 Knockout hole 40 Drive portion 40A, 40B Drive mechanism 43 Winding portion 44 Roller 45 Roller (first roller)
46 Roller (second roller)
45A, 45B, 46A Guide groove 47, 48 Rope outlet

Claims (2)

A horizontally long decorative panel is provided on the main body containing the heat exchanger and the blower, and the horizontally long decorative panel is provided with a suction grille that can be lifted and lowered via a hanging rope that is wound and fed by a lifting device. In the built-in air conditioner,
The lifting device is a laterally long exterior case that houses the winding portion of the suspension rope. Inside the laterally long exterior case, one end of the exterior case is placed in one short direction of the exterior case by the winding portion. A first roller capable of guiding a suspension rope to be wound and unwound, and a second roller capable of guiding the suspension rope to be wound and unwound by the winding portion at the other end in the short side of the outer case at the other end. 2 rollers are arranged,
And this exterior case is arranged at a position close to one end in the longitudinal direction with respect to the horizontally long decorative panel,
The suspended rope wound and fed out from each roller at both ends of the outer case is connected in a loop along the horizontal direction of the horizontally long decorative panel to support the suction grille. Type air conditioner. Lower rope guides that guide the suspension rope downward at the four corners of the horizontally long decorative panel,
2. The ceiling-embedded air conditioner according to claim 1, wherein upper rope guides for guiding the suspension rope upward are provided at four corners of the suction grill.