JP4359124B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner.

2. Description of the Related Art Conventional ceiling-embedded air conditioners include one in which an elevating grill can be moved up and down by winding and unwinding a hanging string with an elevating device in order to clean and replace a filter. Then, conventionally, four suspension strings between the lifting device and the lifting grill are provided as described in Patent Document 1 and Patent Document 2, for example. And if there are many hanging strings, the attachment work of a hanging string will increase and the possibility that a hanging string will be entangled increases. In addition, if the number of straps is small, the elevating grill will not be stable, the elevating grill will be unstable during elevating, and smooth elevating may not be possible. It will be necessary to support it, and work will be troublesome.
JP 2000-18633 A JP-A-10-122592

  The problem to be solved is that if the number of hanging strings is large, the number of hanging string attachments increases, and there is a risk that the hanging strings may be entangled. There is a point.

In the ceiling-embedded air conditioner of the present invention, a grill frame (21) is provided below the indoor unit body (1), and the grill frame includes an air inlet (22) and an air outlet (23). When the lifting device (36) winds and unwinds the hanging string (32, 33, 34), the lifting grill (31) moves up and down, and when it is lifted, the lifting grill is positioned at the air inlet of the grill frame. Yes. A pair of air outlets are arranged on the front and rear sides of the air inlet, a front rail is provided between the air inlet and the front air outlet, and the air inlet and the rear air are provided. A rear rail is provided between the air outlet and the lifting device is provided on one of the left side and the right side of the air suction port. There are three first suspension strings extending from the lifting device to the left or right side along the front rail (24), and the first suspension string guides ( 53, 54) to change the direction and attached to the other side of the left or right side of the front part of the lifting grille, and the second hanging strap from the lifting device is the left side or right side of the front part of the lifting grille Is attached to one side of the The string extends to the center along the rear rail (24), and is guided to the third suspension string guide (55) provided on the grill frame to change the direction of the rear grille. The lifting amount of the two first hanging strings and the second hanging string attached to the center portion is larger than the feeding amount of the third hanging string, and when the lifting grill is at the lowest position, the lifting grill Is on the lower side as you go to the front.

  According to the present invention, the first suspension string from the lifting device extends to the other side of the left side or the right side along the front rail and is guided to the first suspension string guide provided on the grill frame. The direction is changed and attached to the left or right side of the front part of the lifting grille, and the second hanging strap from the lifting device is attached to the left side or right side of the front part of the lifting grille and lifted. A third suspension string from the apparatus extends to the center along the rear rail, and is guided to the third suspension string guide provided on the grill frame to change the direction, so that the center of the rear part of the lift grill It is attached to the part. In this way, the three hanging straps are attached to the left and right front portions and the rear central portion of the lifting grill, and the lifting grill can be stably moved up and down with fewer hanging straps than the conventional four. it can. As a result, it is possible to easily attach the hanging string and prevent the hanging string from being entangled as much as possible.

  The purpose of the ceiling-embedded air conditioner is to reduce the number of suspension strings as much as possible, and to move the lifting grille up and down stably, with the first suspension string from the lifting device on the left or right side along the front rail. The second suspension is extended to the other side of the grille, is guided to the first suspension string guide provided on the grill frame, changes direction, and is attached to the other side of the left or right side of the front part of the lifting grill. A string is attached to one of the left and right sides of the front part of the lifting grille, and the third suspension string extends to the center along the rear rail and is provided for the third suspension string provided on the grill frame. It was realized by being guided to the part and changing the direction and being attached to the center of the rear part of the lifting grill.

  Next, an embodiment of the ceiling-embedded air conditioner according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an embodiment of a ceiling-embedded air conditioner according to the present invention. FIG. 2 is an exploded perspective view of the grill frame, the filter, and the lifting grill. FIG. 3 is a schematic explanatory view of the grill frame with the covering member removed. FIG. 4 is a schematic perspective view of the grill frame repeated with the covering member attached. FIG. 5 is a plan view of the grill frame. FIG. 6 is a plan view of the grille frame which is repeated with the covering material removed. 7A and 7B are explanatory views of the suspension string guide section and the fixing section, in which FIG. 7A is a view of a guide, FIG. 7B is a view of a guide roller, FIG. 7C is a plan view of a suspension strap fixing section, and FIG. (C) DD sectional drawing, (e) is the EE arrow view of (c). FIG. 8 is a plan view of the main part of the grill frame. 9A and 9B are explanatory diagrams of the display substrate and the limit switch. FIG. 9A is a cross-sectional view taken along line AA in FIG. 8 near the display substrate, and FIG. 9B is a cross-sectional view taken along line BB in FIG. In FIG. 1, the elevating grill is shown in both a state where it is attached to the grill frame and a state where it is lowered. In FIG. 3, the grill frame is illustrated in a repetitive state, and the covering material and the lifting grill are illustrated in a perspective view as viewed obliquely from above. FIG. 5 is shown with the upper structure of the air outlet cut. FIG. 6 is shown with the hanging string, its guide and guide rollers attached. In FIG. 8, each lead wire is configured by combining a plurality of wires, but is illustrated by one for easy understanding. In the description of this specification, the longitudinal direction of the ceiling-embedded air conditioner is the left-right direction, and the side on which the two hanging strings and the display substrate are arranged is the front side.

First, the overall configuration of the ceiling-embedded air conditioner will be described.
The exterior plate 2 of the indoor unit main body 1 of the ceiling-embedded air conditioner is provided with a total of four fixing flanges 3 as fixing portions before and after the left and right side surfaces. An opening 7 is formed in the ceiling plate 6 so that the indoor unit body 1 can be installed in the ceiling from below.

  An anchor bolt 9 is attached to a structure (not shown) in the ceiling, and the fixing flange 3 of the indoor unit main body 1 is fixed to the lower end portion of the anchor bolt 9 so that the indoor unit main body 1 is installed in the ceiling. Installed.

  The indoor unit body 1 includes a heat exchanger (not shown) and a blower (not shown) inside, and the connection port 11 for the refrigerant pipe and the connection port 12 for the drain are the exterior plates of the indoor unit body 1. 2 to protrude outward. The refrigerant pipe connection port 11 is connected to an outdoor unit (not shown) through a refrigerant pipe 13. A drain pipe 14 is connected to the drain connection port 12. And in the bottom face of the indoor unit main body 1, the suction inlet and the blower outlet are formed.

  The opening 7 of the ceiling plate 6 and the lower part of the indoor unit main body 1 are covered with a grill frame 21. The grill frame 21 includes an air inlet 22 and an air outlet 23 at positions corresponding to the inlet and outlet of the indoor unit body 1. That is, the air suction port 22 is provided in the center portion of the grill frame 21, and a pair of air outlets 23 are provided on the front and rear sides of the air suction port 22. The air outlet 23 is provided long in the left-right direction. A crosspiece 24 of the grill frame 21 is provided between the air inlet 22 and the air outlet 23 to partition the air inlet 22 and the air outlet 23. The grill frame 21 is attached to the indoor unit body 1.

  A substantially rectangular elevating grill 31 is disposed at the air inlet 22 of the grill frame 21. Suspension strings 32, 33, and 34 are attached to the elevating grill 31 at the front left and right and the rear center. The upper ends of the three suspension strings 32, 33, 34 are respectively attached to a winding drum (not shown) of the lifting device 36 provided on the grill frame 21. The case constituting the outer shell of the lifting device 36 has a substantially rectangular parallelepiped box shape, and a plurality of winding drums and a motor (not shown) for rotating the winding drum are provided inside the case. Yes. A winding drum is provided for each of the hanging strings 32, 33, 34. The lifting device 36 is attached to the upper surface of the grill frame 21 with screws, and is disposed on the right side (that is, the lateral side) of the air suction port 22 and between the extended lines of the front and rear air outlets 23. The screwing position of the lifting device 36 is indicated by reference numeral 81 in FIG. And if the raising / lowering apparatus 36 operates and winds and unwinds the hanging strings 32, 33, 34, the raising / lowering grill 31 will move to an up-down direction. A filter 41 is detachably attached to the lift grill 31. When the filter 41 is attached or detached, the lift grill 31 is lowered. Then, when the elevating grill 31 is at its lowest position, it stops at an inclination of about 45 ° so that it goes downward as it goes to the front side. Further, during air conditioning, the elevating grill 31 is raised and positioned at the air inlet 22. The air sucked from the air inlet 22 of the grill frame 21 is cooled or heated by the heat exchanger of the indoor unit body 1 and blown out from the air outlets 23 before and after the grill frame 21.

  Next, the wiring of the hanging strings 32, 33, 34 will be described. As described above, the lifting device 36 is installed on the grill frame 21. The grill frame 21 is formed with through holes 42, 43, 44 for suspension strings 32, 33, 34. In addition, a covering member 51 is formed below the crosspiece 24 so as to form hanging string passage spaces 46 and 47 (see FIGS. 4 and 9A) through which the hanging strings 32 and 34 pass below the crosspiece 24 of the grill frame 21. , 52 are attached. The covering members 51 and 52 have an elongated box shape whose upper surface is open, and have an elongated rectangular bottom plate and side plates rising from the periphery (ie, four sides) of the bottom plate.

  Further, as shown in FIG. 6, on the left side of the grill frame 21, a guide tool 53 and a guide roller 54 are provided on the lower surface of the grill frame 21 near the lateral side of the front rail 24. The guide tool 53 and the guide roller 54 constitute a guide unit that guides the first suspension string 32. As shown in FIG. 7A, the guide 53 has an opening 53a through which the first suspension string 32 passes, and the first suspension string 32 from the through hole 42 passes through the opening 53a. The direction of the first suspension string 32 extending in the left-right direction is guided to the guide roller 54 side. The guide roller 54 changes the direction of the first suspension string 32 extending substantially horizontally from the guide tool 53 downward.

  In addition, a guide tool 55 that is a third suspension string guide portion is attached to the lower surface of the grille frame 21 near the edge of the center portion of the rear crosspiece 24. The guide tool 55 has the same structure as the guide tool 53, and has an opening through which the third suspension string 34 passes. The third suspension string 34 from the through hole 44 passes through the opening of the guide tool 55. Thus, the third suspension string 34 extending in the left-right direction is guided to the front side (that is, the air suction port 22 side), and the direction is changed downward.

  The grill frame 21 is configured in this way, and the first suspension string 32 from the lifting device 36 is introduced into the suspension string passage space 46 on the front side through the first through hole 42 of the grill frame 21, and the suspension string Passing through the passage space 46 from the right side to the left side, at the left end of the suspension string passage space 46, the guide member 53 is interposed through the suspension string outlet opening formed between the covering member 51 and the grille frame 21. It is led to the outside, turned downward by the guide roller 54, and attached to the left front side of the elevating grill 31. The second suspension string 33 from the lifting device 36 is guided to the lower side of the grill frame 21 through the second through hole 43 of the grill frame 21 and attached to the right front side of the lifting grill 31. The third suspension string 34 from the lifting device 36 is introduced into the rear suspension string passage space 47 through the third through hole 44 of the grill frame 21, and passes through the suspension string passage space 47 from the right side to the left side to be suspended. Near the center of the string passage space 47, it is led to the outside of the covering material 52 from the suspension string outlet opening formed between the covering material 52 and the grille frame 21 via the guide 55, and It is attached to the center of the rear side.

  As described above, the tip ends of the suspension strings 32, 33, 34 are attached to the upper surface of the elevating grill 31. The attachment structure is shown in FIGS. 7 (c) to 7 (e). The ends of the suspension strings 32, 33, and 34 are integrated by caulking through a metal sleeve 37, and the sleeve 37 is pressed against the lifting grill 31 by a pressing member 38 that is a fixing portion and fixed. A filter 41 is present inside the pressing member 38.

  In addition, a transparent plate 56 for display is provided on a part of the front covering material 51, and the status of the air conditioner (operation ON / OFF, timer ON / OFF, alarm) is provided above the transparent plate 56. A display substrate 57 for displaying a lamp or the like is disposed. The display substrate 57 includes a remote control receiving unit. Then, the lead wires 58 from the display substrate 57 are led out from the suspension string passage space 46 to the upper side of the grill frame 21 through a long hole 59 as a lead wire through hole formed in the main body of the grill frame 21. Yes. A vertical rib 61 projecting downward from the lower surface of the main body of the grill frame 21 is provided around the elongated hole 59 (that is, the rear edge), and a lead from the display substrate 57 is provided on the front side of the vertical rib 61. A line 58 is wired, while a first suspension string 32 is wired behind the vertical rib 61.

  Further, a limit switch fixing portion 67 projects from the front beam 24 of the grill frame 21. A limit switch 66 is attached to the fixing portion 67 via a limit switch fixing tool 68. The limit switch fixture 68 has a horizontal portion 69 attached to the fixing portion 67 with screws or the like, and a vertical portion 71 that hangs down from the horizontal portion 69, and the limit switch 66 is attached to the vertical portion 71 that hangs down. It is attached with screws. When the elevating grill 31 is raised and accommodated in a predetermined position, the upper surface of the elevating grill 31 is brought into contact with the tip of the detection lever 72 of the limit switch 66 and raised, and the elevating grill detection signal is output from the limit switch 66.

  Then, the lead wire 73 from the limit switch 66 is wired above the crosspiece 24 through a notch 74 provided in the horizontal portion 69. The lead wire 73 joins the lead wire 58 from the display substrate 57 and is fixed by a lead wire fixing claw 76 provided on the crosspiece 24. The joined lead wires 58 and 73 are bound and fixed by a binding tool 77 together with louver driving lead wires 75 and 75 for a motor for driving the louvers of the front and rear air outlets 23. The lead wire fixing claw 76 is disposed at a position between the binding position by the binding tool 77 and the long hole 59. The lead wires 58, 73, 75, 75 bound by the binding tool 77 are connected to a board (not shown) in the electrical box of the indoor unit body 1 together with a lead wire (not shown) for the drive motor of the elevating device 36. Has been.

As described above, in the above-described embodiment, the hanging straps 32, 33, 34 are respectively attached to the front left, right, and rear central portions of the lifting grill 31, and the three hanging straps 32, 33, 34 are used. The elevating grill 31 can be raised and lowered stably. As a result, the number of hanging strings can be reduced from the conventional four, and the installation work and cost can be reduced.
Further, the feeding amount of the two front suspension strings 32 and 33 is larger than the feeding amount of the rear third suspension string 34. Become. Therefore, it is easier to replace and clean the filter 41 than when the elevating grill 31 is horizontal. In addition, at that time, the front hanging strings are distributed not to the central portion but to the left and right, which facilitates the work.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Examples of modifications of the present invention are illustrated below.

(1) The structure and type of the lifting device can be changed as appropriate as long as the lifting / lowering device can wind and unwind the hanging string.
(2) The fixing means for supporting the indoor unit body 1 on the structure inside the ceiling can be changed as appropriate.
(3) If the covering members 51 and 52 can form the hanging string passage spaces 46 and 47 between the lower surface of the crosspiece 24 of the grill frame 21, the shape, structure, material, etc. can be changed as appropriate. is there.
(4) The lifting device 36 can be arranged on the right side or the left side of the air inlet 22.

  The lifting and lowering device provided on the grill frame winds up and feeds the hanging string, so that the lifting and lowering grill can be applied to a ceiling-embedded air conditioner that moves up and down.

FIG. 1 is a perspective view of an embodiment of a ceiling-embedded air conditioner according to the present invention. FIG. 2 is an exploded perspective view of the grill frame, the filter, and the lifting grill. FIG. 3 is a schematic explanatory view of the grill frame with the covering member removed. FIG. 4 is a schematic perspective view of the grill frame repeated with the covering member attached. FIG. 5 is a plan view of the grill frame. FIG. 6 is a plan view of the grille frame which is repeated with the covering material removed. 7A and 7B are explanatory views of the suspension string guide and the fixing part, where FIG. 7A is a view of a guide, FIG. 7B is a view of a guide roller, FIG. 7C is a plan view of a suspension string fixing part, and FIG. (C) DD sectional drawing, (e) is the EE arrow view of (c). FIG. 8 is a plan view of the main part of the grill frame. 9A and 9B are explanatory diagrams of the display substrate and the limit switch. FIG. 9A is a sectional view taken along the line AA in FIG. 8 near the display substrate, and FIG. 9B is a sectional view taken along the line BB in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit main body 21 Grill frame 22 Air suction inlet 23 Air blower outlet 24 Cross 31 Lifting grill 32 First suspension strap 33 Second suspension strap 34 Third suspension strap 36 Lifting device 53 Guide (first suspension strap guide)
54 Guide roller (first suspension strap guide)
55 Guide (Guide for third strap)

Claims (1)

A grill frame is provided below the indoor unit main body, and this grill frame has an air inlet and an air outlet, and when the lifting device winds and unwinds the hanging string, the lifting grill moves up and down. In the ceiling-embedded air conditioner in which the lifting grill is located at the air suction port of the grill frame,
A pair of the air outlets are disposed on the front and rear sides of the air inlet, a front rail is provided between the air inlet and the front air outlet, and the air inlet and the rear air outlet are provided. There is a rear rail between the exit and
The lifting device is provided on one side of the left or right side of the air inlet,
The number of hanging strings wound and unwound by this lifting device is 3,
The first suspension string from the lifting device extends to the other side of the left side or the right side along the front rail, and is guided to the first suspension string guide provided on the grille frame to change the direction, Attached to the other side of the left or right side of the front of the lifting grille,
A second suspension string from the lifting device is attached to one side of the left or right side of the front of the lifting grille;
A third suspension string from the lifting device extends to the center along the rear rail, and is guided to the third suspension string guide provided on the grill frame to change the direction, and the rear part of the lifting grill Attached to the center of the
The feeding amount of the two first hanging strings and the second hanging string on the front side is larger than the feeding amount of the third hanging string, and when the lifting grill is at the lowest position, the lifting grill is lowered toward the front side. A ceiling-embedded air conditioner characterized by being on the side.

Images