JP3816170B2 - Embedded ceiling air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a two-way cassette type ceiling-embedded air conditioner.
[0002]
[Prior art]
In general, a decorative panel having an air outlet is provided at the lower end of the main body embedded in the ceiling, a filter is provided at the back of the central opening of the decorative panel, and suction ports are left on both sides at the front of the opening. Thus, a ceiling-embedded air conditioner provided with a sheet metal center panel is known. For this type, for example, when replacing or cleaning the filter, remove the center panel, remove the filter, clean the filter, attach the cleaned filter, and then attach the center panel. ing. However, the conventional configuration is not preferable for hygiene because dust drops when removing the filter, and there is a problem that removal of the filter is not preferable for safety because it is a work at a high place.
[0003]
On the other hand, conventionally, a suction grille that supports the filter is provided at the opening of the decorative panel, and the suction grille is formed so that it can be raised and lowered together with the filter. There has been proposed an air conditioner that can be exchanged at the same time.
[0004]
[Problems to be solved by the invention]
However, even with the conventional configuration, a lattice hole through which air passes is formed in the suction grill, so when the suction grill moves up and down, dust adhering to the filter falls through this lattice hole. In the case of use in an air conditioner in Japan, there is a problem in that the problem of dropping of dust remains.
[0005]
Accordingly, an object of the present invention is to provide a ceiling-embedded air conditioner that does not cause dust to fall on the floor when cleaning or replacing a filter.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, a decorative panel having an air outlet is provided at the lower end of the main body embedded in the ceiling, and a filter for cleaning the intake air is provided at the back of the central opening of the decorative panel. In a ceiling-embedded air conditioner that is provided with a center panel that closes the central opening while leaving a suction port space on both sides, the center panel supports the filter via legs of a predetermined height. And the center panel is formed so as to be movable up and down.
[0007]
According to the second aspect of the present invention, a decorative panel having an air outlet is provided at the lower end of the main body embedded in the ceiling, and a filter for cleaning the intake air is provided at the back of the central opening of the decorative panel. In the ceiling-embedded air conditioner that is provided with a center panel that closes the central opening while leaving a suction port space on both sides, the center panel supports the filter via legs of a predetermined height, and the center A lifting mechanism for suspending the four places of the panel with a hanging string and feeding / rewinding the hanging string is provided on the decorative panel.
[0008]
According to the first or second aspect of the invention, since the filter is provided on the upper portion of the center panel via the leg portion, even if vibration or the like is generated when the center panel is raised or lowered, the dust adhering to the filter is not attached. Since it falls on the center panel and is collected there, it does not fall on the floor, for example.
[0009]
According to a third aspect of the present invention, in the second aspect of the present invention, provisional fasteners are provided for temporarily fixing both ends of the center panel and the central three places to the decorative panel.
[0010]
In the installation work of the ceiling-embedded air conditioner, the center panel is temporarily fixed at a predetermined position of the decorative panel before the power is turned on. Normally, this center panel is heavy and is formed of a thin steel plate that lacks rigidity. For this reason, if the center panel is temporarily fixed, the center will be greatly bent by just temporarily fixing both ends. The center panel is deformed.
[0011]
According to the invention described in claim 3, since the center panel is temporarily fixed using the temporary fixing tools at both ends and in the center, the deformation is suppressed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0013]
In FIG. 1, the code | symbol 1 has shown the box-shaped main body embed | buried in a ceiling. As shown in FIG. 2, a heat exchanger 3, a blower 5, and the like are accommodated in the main body 1. A decorative panel 9 having air outlets 7 at both ends is fixed to the lower end of the main body 1, and a sheet metal filter receiving member 11 is fitted into the back of the central opening of the decorative panel 9. A filter 13 that purifies the intake air is in contact with the receiving portion 11 a of the filter receiving member 11. Further, a sheet metal center panel 17 is provided in front of the central opening of the decorative panel 9 so as to leave a space as a suction port 15 on both sides.
[0014]
As shown in FIG. 1, the sheet metal center panel 17 supports the above-described filter 13 via legs 100, 100, and these are attached to the decorative panel via four suspension strings 19. 9 is suspended up and down freely.
[0015]
As shown in FIG. 3, one end 19 a of four suspending straps 19 is fixed to four positions of the center panel 17, and the other end 19 b of each suspending strap 19 extends upward and is wound around a roller 21. Then, it extends almost horizontally and is connected to the lifting mechanism 23 as shown in FIG. The lifting mechanism 23 is fixed on a plate 24 made of sheet metal, and the plate 24 made of sheet metal is stretched over substantially the center position of the center opening of the decorative panel 9 as shown in FIG.
[0016]
As shown in FIG. 4, the elevating mechanism 23 has four pulleys 25, and the other ends 19 b of the suspension strings 19 are fixed to the pulleys 25. The four pulleys 25 are separately connected to both ends of a single shaft 27, and the single shaft 27 is connected to the output shaft of the motor 33 via gears 29 and 31. Reference numerals 35 and 37 denote bearings.
[0017]
Each pulley 25 is provided with a power transmission mechanism including a clutch as shown in FIG. FIG. 5 shows only one end of the shaft 27. At the end of the shaft 27, there are a stopper 39, a rubber material 41, a spacer 43, a spring 45, a rubber material 46, a spring seat 47, a skin material 49, and two pulleys. 25, 25, skin material 51, spring seat 53, rubber material 54, spring 55, spacer 57, rubber material 58, and stopper 59 are fitted in this order, and stoppers 39, 59 located on both sides are as shown in FIG. When fixed to the shaft 27 with a screw 62 at a predetermined interval, a power transmission mechanism is configured.
[0018]
According to this, when the shaft 27 rotates, normally, the pulleys 25 and 25 are connected to the shaft 27 by the frictional force generated by the spring force of the springs 45 and 55, so that power is transmitted to the pulley 25. The pulley 25 rotates integrally with the shaft 27, and each suspension cord 19 is fed / wound.
[0019]
Each suspension string 19 is wound around the pulleys 25 and 25 in the same direction. However, as shown in FIG. 6, one suspension string 19 is pulled out from the upper edge of the pulley 25 and the other suspension string 19 is suspended. As the string 19 is pulled out from the lower edge of the pulley 25, it is simultaneously fed out and taken up.
[0020]
However, even if the pulleys 25 and 25 completely wind up the respective suspending straps 19 for a predetermined time, the center panel 17 described above becomes the predetermined of the decorative panel 9 due to the variation in the length of each suspending strap 19. In some cases, it is tilted without being stored in the position. In general, assuming such a case, even if it is estimated that the pulleys 25 and 25 have completely wound the suspension string 19 for a predetermined time and the center panel 17 has almost been lifted, the pulley 25, 25 is assumed to have been almost fully raised. For example, the shaft 27 is rotated for 4 to 5 seconds, and the suspension string 19 is wound up by the pulleys 25 and 25. In this case, the pulley 25 that has been wound early is idled by the above-described clutch being operated. That is, since the pulley 25 that completely winds the suspension cord 19 is no longer wound, the pulley 25 idles against the frictional force generated by the spring force of each of the springs 45 and 55 at that position.
[0021]
According to this embodiment, the center panel 17 is made of sheet metal, and requires a considerable torque when it is heavy and lifts. When rotating the shaft 27 and rotating the pulley 25, the transmission of torque is governed by the springs 45 and 55 as described above. In order to ensure the transmission of this torque, a rubber material 41 is interposed between the stopper 39 and the spacer 43, and a rubber material 46 is interposed between the spacer 43 and the spring seat 47. A skin material 49 is interposed between the pulley 47 and the pulley 25. Further, a skin material 51 is interposed between the pulley 25 and the spring seat 53, a rubber material 46 is interposed between the spring seat 53 and the spacer 57, and a rubber material is further interposed between the spacer 57 and the stopper 59. 58 is interposed.
[0022]
As a result of a long-term verification test, the skin materials 49 and 51 as slip stoppers are interposed on the side sliding on the pulley 25, and the rubber materials 41, 46, 54 and 59 are interposed on the other side. It has been found that the torque can be transmitted best.
[0023]
According to this embodiment, since the elevating mechanism 23 is disposed at the center of the opening of the decorative panel 9, the lengths of the four suspension strings 19 can be made equal, and the same force can be applied during feeding / winding. Because it hangs on, you can balance the force. Accordingly, even when a heavy object such as the center panel 17 is lifted, an excessive force is not applied to the elevating mechanism 23 including the motor 33 and the like, and the center panel 17 can be raised and lowered smoothly.
[0024]
Further, according to this embodiment, since the filter 13 is provided on the upper part of the sheet metal center panel 17 via the leg portion 100, even if vibration occurs when the center panel 17 is raised and lowered, it adheres to the filter 13. Garbage falls on the upper surface of the center panel 17 and is collected there. Therefore, the dust attached to the filter 13 does not fall on the floor when the filter 13 is replaced, and is very hygienic. Therefore, even if it is used for an air conditioner in a food-related factory or store, The problem of falling garbage is almost completely freed.
[0025]
Next, another embodiment will be described.
[0026]
Since this type of air conditioner employs a system in which the center panel 17 is lifted and lowered by the hanging cord 19, until the center panel 17 is completely lifted to a predetermined position on the decorative panel 9 by turning on the power. If the center panel 17 is hanging, there is a problem that it interferes with other construction.
[0027]
Therefore, when installing the air conditioner, the center panel 17 is temporarily fixed at a predetermined position of the decorative panel 9 before the power is turned on. Normally, the center panel 17 is heavy and is formed by a thin iron plate or the like lacking rigidity. Therefore, when the center panel 17 is temporarily fixed, the center is bent greatly only by temporarily fixing both ends. The center panel 17 is deformed.
[0028]
In order to solve this problem, as shown in FIGS. 7 to 9, temporary fasteners 81 and 91 are provided for temporarily temporarily fixing both ends of the center panel 17 and the center three places to the decorative panel 9. Provided. One temporary fixing tool 81 temporarily fixes both ends of the center panel 17 and has a pair of locking bodies 83 as shown in FIG. 7, and hooks 83 a are formed on the locking bodies 83. The
[0029]
When the center panel 17 is temporarily fixed, the pair of locking bodies 83 are fitted to the end edges 17a of the center panel 17, and the locking bodies 83 are slid by a predetermined amount to When the projecting pin 87 extending integrally from the decorative panel 9 is engaged with the hook 83a, the locking body 83 is fixed to the end edge 17a of the center panel 17 with screws 85, respectively. Thereby, the temporary fixing of both ends of the center panel 17 is completed. Note that the locking body 83 is necessary only at the time of temporary fixing, and the locking body 83 is an obstacle in other cases. Therefore, when unnecessary, as shown in FIG. 8, the locking body 83 is turned in the opposite direction, and the locking body 83 is fitted to the end edge 17 a of the center panel 17 from the inside, and the same screw 85. Fasten at. In addition, although the state which made only one latching body 83 into the opposite direction is illustrated for convenience, it cannot be overemphasized that the other latching body 83 is similarly made into the opposite direction, and is fastened with the same screw 85. According to this, since the locking body 83 can be removed and used as necessary, both ends of the center panel 17 can be temporarily fixed at any time.
[0030]
The other temporary fixing tool 91 temporarily fixes the center of the center panel 17 as shown in FIG. 9a. As shown in FIGS. 9b and 9c, the temporary fastener 91 has a rotating plate 93 that can rotate in the direction of the arrow, and the shaft 93a of the rotating plate 93 is the plate 24 (FIG. 1). And a support body 95 extending integrally from the lower surface of (see). The temporary fixing of the center of the center panel 17 is performed after temporarily fixing both ends. The state shown in FIG. 9 is a temporarily fixed state.
[0031]
Normally, the rotating plate 93 is rotated 90 degrees from the state of FIG. 9b and is in the state shown in FIG. 9c. In this state, the engagement between the leg portions 100 and 100 fixed to the center panel 17 and the rotating plate 93 is released, and the center panel 17 is in a state where it can be moved up and down integrally with the filter 13. When temporarily fixing the center panel 17, the rotation plate 93 is rotated as shown in FIG. 9b. According to this, temporary fixing is completed only by rotating the rotation plate 93.
[0032]
As mentioned above, although this invention was demonstrated based on one embodiment, it is clear that this invention is not limited to this.
[0033]
For example, although a two-way cassette type air conditioner has been described, the present invention can also be applied to a four-way cassette type, and is not limited to the center panel, and is also applicable to a suction grill lifting device having a lattice hole. Is possible.
[0034]
【The invention's effect】
According to the first or second aspect of the invention, since the filter is provided on the upper portion of the center panel via the leg portion, even if vibration or the like occurs when the center panel is raised or lowered, the dust adhering to the filter is not attached. Since it falls on the center panel and is collected there, it does not fall on the floor, for example.
[0035]
According to the third aspect of the present invention, the center panel is temporarily fixed by using the temporary fixing tools at both ends and in the center, so that the center panel is formed of a thin iron plate having a heavy weight and lacking rigidity instead. Even when the center panel is temporarily fixed, the center is not greatly bent and deformed, and the deformation is suppressed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a ceiling-embedded air conditioner according to the present invention.
FIG. 2 is a sectional view of the same.
FIG. 3 is a perspective view showing a center panel.
FIG. 4 is a plan view showing an elevating mechanism.
FIG. 5 is a perspective view showing a clutch mechanism.
6 is an enlarged view of a main part of FIG.
FIG. 7 is a perspective view showing temporary fasteners at both ends of the center panel.
8 is a perspective view showing a state in which the temporary fastener of FIG. 7 is stored. FIG.
FIG. 9 is a perspective view showing a temporary fastener in the center of the center panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 3 Heat exchanger 5 Blower 7 Outlet 9 Cosmetic panel 11 Filter receiving member 13 Filter 15 Suction port 17 Center panel 19 Suspension 81, 91 Temporary fastener 100 Leg part

Claims (3)

A decorative panel having an air outlet is provided at the lower end of the main body embedded in the ceiling, a filter for cleaning the intake air is provided at the back of the central opening of the decorative panel, and the central opening is sucked into both sides. In the ceiling-embedded air conditioner provided with a center panel that closes and leaves the mouth space,
The ceiling-embedded air conditioner is characterized in that the center panel supports the filter via legs of a predetermined height, and the center panel is formed so as to be movable up and down integrally with the filter. A decorative panel having an air outlet is provided at the lower end of the main body embedded in the ceiling, a filter for cleaning the intake air is provided at the back of the central opening of the decorative panel, and the central opening is sucked into both sides. In the ceiling-embedded air conditioner provided with a center panel that closes and leaves the mouth space,
An elevating mechanism for supporting the filter through legs of a predetermined height on the center panel, suspending the four positions of the center panel with a hanging string, and feeding / rewinding the hanging string, A ceiling-embedded air conditioner provided on the decorative panel. The ceiling-embedded air conditioner according to claim 2, further comprising temporary fasteners for temporarily temporarily fixing both ends of the center panel and three central locations to the decorative panel.

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