JP3906017B2 - 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. As described above, a ceiling-embedded air conditioner provided with a sheet metal center panel is known.
[0003]
In this type, for example, when replacing or cleaning the filter, the center panel is removed, the filter is removed, the filter is cleaned, a cleaned filter is attached again, and then the center panel is attached. . However, the conventional configuration is not preferable in terms of hygiene because dust drops when the filter is removed, and removal of the filter is not preferable in terms of safety because it requires work at a high place.
[0004]
In order to solve this problem, the center panel can be lifted and lowered with a hanging rope integrally with the filter. When replacing the filter, the center panel can be lowered together with the filter so that the filter can be replaced at a low place. A ceiling-embedded air conditioner has been proposed.
[0005]
[Problems to be solved by the invention]
As described above, in the air conditioner that lifts and lowers the center panel and the filter using the hanging rope, when the center panel rises and the filter is attached to the central opening back of the decorative panel, the center panel is inclined, A situation where the filter or the center panel hits the decorative panel can occur. As described above, when the center panel or the like further rises with the filter or the center panel touching one side, an excessive force acts on the center panel or the filter, and the center panel or the filter may be deformed.
[0006]
The object of the present invention has been made in consideration of the above-mentioned circumstances, and it is possible to satisfactorily prevent the center panel that can be moved up and down integrally with the filter from being tilted and raised and stored with a simple structure. The object is to provide a ceiling-embedded air conditioner.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, a decorative panel having an air outlet is installed at the lower end of a main body that can be embedded in the ceiling, and a filter for purifying the intake air is disposed at the back of the central opening of the decorative panel. The center opening is closed by a center panel so as to form suction ports on both sides of the center opening, and the center panel and the filter are integrated so that the decorative panel can be moved up and down by a plurality of suspension ropes. In the ceiling-embedded air conditioner provided, one end of the suspension rope facing the short direction of the center panel is connected through a spring, and is substantially in the longitudinal direction of the central opening of the decorative panel. Elevating means is installed at a central position, and in this elevating means, among the plurality of suspension ropes, the other end of each suspension rope that supports the same long side of the center panel is provided for each long side. Characterized in that it is rolled up at a location adjacent to the have.
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, a connecting member is provided at both ends of the spring, and the tip of the suspension rope is configured to be freely engageable with the connecting member. Is.
[0009]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the center panel is in contact with the suspension rope at a position facing the short direction of the center panel, and the extending direction of the suspension rope is set. A rope guide having a curved rope receiving surface to be changed is installed.
[0010]
According to a fourth aspect of the present invention, in the third aspect of the present invention, the rope receiving surface of the rope guide is characterized in that irregularities are formed in a portion in contact with the hanging rope.
[0011]
The invention according to claim 5 is characterized in that, in the invention according to claim 3 or 4, the rope receiving surface of the rope guide is configured such that a hanging rope is hooked from the side thereof. is there.
[0012]
According to a sixth aspect of the present invention, in the invention according to any one of the third to fifth aspects, the rope guide is provided so as to be able to abut on connecting members provided at both ends of the spring, and the excess of the spring is provided. The present invention is characterized in that it can be prevented from being stretched.
[0013]
The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the suspension rope facing the short direction of the center panel passes between the center panel and the filter and serves as a spring. Are connected to each other.
[0014]
The invention described in claim 1 has the following action.
[0015]
Since the suspension rope facing the short direction of the center panel is connected via a spring, when the center panel and the filter are tilted and lifted and stored in the center opening of the decorative panel, The spring is extended by the hoisting force acting on the upper suspension rope and tilted, and the lower suspension rope is hoisted and tilted, and the center panel and the filter are corrected to the horizontal state and stored in the central opening of the decorative panel. . As a result, even when the center panel and the filter are tilted and lifted, they can be stored well in a horizontal state in the central opening of the decorative panel.
[0016]
In addition, since the suspension rope facing the short direction of the center panel is connected via the spring, it is not necessary to equip the lifting / lowering drive device that winds and feeds the suspension rope with a clutch mechanism. For this reason, the center panel and the filter can be satisfactorily stored in the decorative panel in a horizontal state with a simple structure.
[0017]
The invention according to claim 2 has the following effects.
[0018]
Since the tip of the suspension rope is configured to be freely engageable with the connecting members provided at both ends of the spring, the attachment and removal of the suspension rope and the spring can be easily performed.
[0019]
The invention according to claim 3 has the following effects.
[0020]
Since the center panel is provided with a rope guide having a curved rope receiving surface that contacts the hanging rope and changes the extending direction of the hanging rope at a position facing the short direction, Compared with the case where the extending direction of the suspension rope is changed using a pulley, the component configuration can be simplified.
[0021]
The invention according to claim 4 has the following effects.
[0022]
The rope receiving surface of the rope guide has irregularities in the portion that comes into contact with the hanging rope. This irregularity can reduce the contact area between the rope receiving surface and the hanging rope. Frictional resistance can be reduced.
[0023]
The invention according to claim 5 has the following effects.
[0024]
Since the rope receiving surface of the rope guide is configured so that the hanging rope is hooked from the side, this hanging rope is connected with the hanging rope facing the short direction of the center panel using a spring. Can be attached to and detached from the rope guide. As a result, the center panel can be easily attached and detached without releasing the connection of the suspension ropes facing the short direction of the center panel.
[0025]
The invention described in claim 6 has the following effects.
[0026]
Since the rope guide is provided so as to be able to contact the connecting members provided at both ends of the spring so as to prevent excessive extension of the spring, the rope guide fulfills the function of preventing excessive extension of the spring. Therefore, it is possible to prevent the spring from extending excessively and not returning to the original length.
[0027]
The invention described in claim 7 has the following action.
[0028]
Since the suspension rope facing the short direction of the center panel is connected by a spring through the center panel and the filter, the suspension rope facing the short direction of the center panel is connected. In addition, the filter can be easily attached and detached.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0030]
FIG. 1 is a perspective view showing an embodiment of a ceiling-embedded air conditioner according to the present invention. 2 is a cross-sectional view of the ceiling-embedded air conditioner of FIG.
[0031]
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 can be brought into contact with the receiving portion 11 a of the filter receiving member 11. A center panel 17 made of sheet metal is provided at the front portion of the central opening of the decorative panel 9 so as to leave a space as a suction port 15 on both sides so as to close the central opening.
[0032]
As shown in FIG. 1, the sheet metal center panel 17 supports the above-described filter 13 for purifying the intake air, and these are integrated together through four hanging ropes 19 to make up the makeup. The panel 9 is suspended up and down.
[0033]
As shown in FIG. 2, the center panel 17 is housed in the central opening of the hanging rope 19, and the filter 13 is in contact with the receiving portion 11 a of the filter receiving member 11 from the suction ports 15 on both sides of the center panel 17. Is sucked in as shown by the arrow in FIG. 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. .
[0034]
As shown in FIG. 3, each of the four suspension ropes 19 is hooked on a rope guide 20 installed at each of the four corners of the center panel 17 to change its direction substantially at right angles. One end side of the suspension rope 19 facing the short direction of 17 is connected via a spring 21 as will be described later. On the other hand, the other end side of each of the four suspension ropes 19 is extended upward, wound around each of the four rollers 22 installed around the central opening of the decorative panel 9, and then extends substantially horizontally. It is taken out and connected to the lift drive device 23.
[0035]
The elevating drive device 23 is installed on a plate 24 made of sheet metal, and the plate 24 is installed at a substantially central position in the longitudinal direction of the central opening of the decorative panel 9. Accordingly, the four suspension ropes 19 are set to have substantially the same length.
[0036]
As shown in FIG. 4, the elevating drive device 23 has four pulleys 25, and the other ends of the suspension ropes 19 are fixed to the pulleys 25. The four pulleys 25 are divided into two at both ends of one drive shaft 26, and are fixed integrally with the rotation. The drive shaft 26 is connected to a drive motor (not shown) through a gear (not shown). The drive shaft 26 is similarly rotated in the forward or reverse direction by the forward or reverse rotation of the drive motor, the suspension rope 19 is wound around the pulley 25 and fed out from the pulley 25, and the center panel 17 and the filter 13 are attached to the decorative panel 9. It can be moved up and down.
[0037]
Here, the suspension rope 19 is wound around each pulley 25 in the same direction, but one suspension rope 19 is pulled out from the upper edge of one pulley 25 of the two adjacent pulleys 25, Another suspension rope 19 is pulled out from the lower edge of the other pulley 25. Thereby, each suspension rope 19 is comprised by each pulley 25 so that winding or unwinding is possible simultaneously.
[0038]
By the way, as shown in FIG. 3, of the four suspension ropes 19, one end of the suspension rope 19 facing the short direction of the center panel 17 is the filter 13 supported by the center panel 17 via the leg portion 28. And the center panel 17 as described above, the spring 21 and the connection fitting 27 as a connection member are used to be detachably connected.
[0039]
That is, as shown in FIG. 5, the connection fitting 27 is formed in an L shape in a plan view, and the loop 29 of the spring 21 is inserted into the mounting hole 30 formed in the tip portion so as to be integrated with the spring 21. . A contact surface 31 is formed at the base end portion of the connection fitting 27 and a locking hole 32 is opened. Further, a slit 34 extending from the one side edge 33 of the connection fitting 27 toward the locking hole 32 is formed at the base end portion of the connection fitting 27.
[0040]
One end of the suspension rope 19 is passed through the slit 34, and a suspension stopper 19 made of, for example, resin, which is fixed to one end of the suspension rope 19, is engaged with the engagement hole 32. As a result, it is comprised so that engagement with the spring 21 is possible.
[0041]
As shown in FIG. 3, the suspension rope 19 facing the short direction of the center panel 17 is connected via the spring 21 as described above, so that when the center panel 17 and the filter 13 are raised, the center panel 17 When the filter 13 is tilted in the short direction and stored in the central opening of the decorative panel 9, the winding force acts from the lifting / lowering drive device 23 on the suspension rope 19 positioned on the upper side with the center panel 17 tilted. The spring 21 is extended by this winding force. While the spring 21 is extended, the center panel 17 is tilted and the hanging rope 19 positioned on the lower side is wound up, and the center panel 17 and the filter 13 are corrected to a horizontal state and placed in the central opening of the decorative panel 9. Stored.
[0042]
On the other hand, as described above, the rope guides 20 installed at the four corners of the center panel 17 are installed at positions facing the short direction of the center panel 17 because the center panel 17 is rectangular. It will be. As shown in FIG. 6, these rope guides 20 have a rope receiving surface 36 and a rope insertion hole 37, and a rope receiving groove 38 on which the hanging rope 19 can slide is formed on the rope receiving surface 36.
[0043]
As shown in FIGS. 6 to 8, each rope guide 20 includes a base part 39, a body part 40, and a head part 41, and the base part 39 and the body part 40 are integrated to form a body part 40. And the head 41 are integrated. The body part 40 and the head part 41 are provided with a side part 42 on one side and an insertion opening 43 on the other side.
[0044]
The base part 39 is for attaching the rope guide 20 to the decorative panel 9 using, for example, screws. Further, the trunk portion 40 is formed with a contact surface 44 (described later) together with the rope insertion hole 37. Further, a curved rope receiving surface 36 is formed on the head 41. The rope receiving groove 38 formed on the rope receiving surface 36 comes into contact with the hanging rope 19 so that the extending direction of the hanging rope 19 can be changed to approximately 90 degrees.
[0045]
The suspension rope 19 is connected by the spring 21 and the connection fitting 27 or is not connected alone, and passes through the insertion opening 43 in the rope guide 20 from the side of the rope guide 20 to the rope receiving groove of the rope receiving surface 36. After being hooked on 38, it is inserted into the rope insertion hole 37 and guided by the rope guide 20.
[0046]
In the rope receiving groove 38, as shown in FIG. 8B, a large number of irregularities 45 are formed in the extending direction. The unevenness 45 reduces the contact area where the rope receiving groove 38 contacts the hanging rope 19 and reduces the frictional resistance between the rope receiving groove 38 and the hanging rope 19.
[0047]
Further, the contact surface 44 formed on the body portion 40 of the rope guide 20 is such that when the spring 21 is excessively extended, the contact surfaces 31 of the connecting fittings 27 on both sides of the spring 21 come into contact with each other. The above excessive elongation is prevented. In other words, for example, when the center panel 17 and the filter 13 are lowered from the decorative panel 9, if a downward external force acts on the center panel 17, the spring 21 extends excessively, but the contact surface 44 of the rope guide 20. Fulfills the function of preventing excessive extension of the spring 21 by bringing the contact surface 31 of the connecting fitting 27 into contact.
[0048]
Therefore, according to the above embodiment, the following effects (1) to (8) are obtained.
[0049]
(1) Since the suspension rope 19 opposed to the short direction of the center panel 17 is connected via the spring 21 and the connecting bracket 27, the center panel 17 and the filter 13 are tilted and raised, and the decorative panel 9 The spring 21 is extended by the hoisting force acting on the upper suspension rope 19 tilting in the center panel 17 and the filter 13, and the lower suspension rope 19 is hoisted and tilted. The panel 17 and the filter 13 are corrected to a horizontal state and stored in the central opening of the decorative panel 9. As a result, even when the center panel 17 and the filter 13 are tilted and raised, they can be stored well in the center opening of the decorative panel 9 in a horizontal state.
[0050]
(2) Since the suspension rope 19 facing the short side direction of the center panel 17 is connected via the spring 21 and the connecting bracket 27, it is not necessary to attach a clutch mechanism to the lifting / lowering drive device 23 that winds and lifts the suspension rope 19. . For this reason, the center panel 17 and the filter 13 can be satisfactorily stored in the decorative panel 9 in a horizontal state with a simple structure.
[0051]
(3) Since the tip of the suspension rope 19 is configured to be freely engageable and disengageable by using the engaging hole 32 and the stopper 35 on the connecting metal fittings 27 provided at both ends of the spring 21, the suspension rope 19 and the spring 21 Mounting and dismounting can be performed easily.
[0052]
(4) The center panel 17 is provided with a rope guide 20 at a position facing the short side direction. The rope guide 20 includes a rope receiving groove 38 formed on a curved rope receiving surface 36. Since the hanging rope 19 comes into contact with the rope receiving groove 38 and its extending direction is changed, the component configuration can be simplified as compared with the case where the extending direction of the hanging rope 19 is changed using a pulley.
[0053]
(5) Since the unevenness 45 is formed in the rope receiving groove 38 of the rope receiving surface 36 in the rope guide 20 at the portion in contact with the hanging rope 19, the unevenness 45 causes the rope receiving groove 38 and the hanging rope 19 to Therefore, the frictional resistance between the suspension rope 19 and the rope guide 20 can be reduced.
[0054]
(6) The rope receiving groove 38 of the rope guide 20 is configured such that the hanging rope 19 is hooked from the side of the rope guide 20 through the insertion opening 43, so that the center panel 17 is suspended in the short direction. The hanging rope 19 can be attached to and detached from the rope guide 20 in a state in which the rope 19 is connected using the spring 21 and the connecting fitting 27. As a result, the center panel 17 can be easily attached and detached without releasing the connection of the suspension rope 19 facing the short direction of the center panel 17.
[0055]
(7) The contact surfaces 31 of the connecting fittings 27 provided at both ends of the spring 21 are provided on the contact surface 44 of the rope guide 20 so as to be able to contact with each other, so that excessive extension of the spring 21 can be prevented. As a result, the rope guide 20 fulfills the function of preventing the spring 21 from excessively extending, so that it is possible to prevent the spring 21 from excessively extending and returning to its original length.
[0056]
(8) Since the suspension rope 19 facing the short direction of the center panel 17 passes between the center panel 17 and the filter 13 and is connected by the spring 21 and the connecting bracket 27, the short direction of the center panel 17 Even when the suspension rope 19 facing the rim is connected, it is possible to ensure the easy attachment / detachment of the filter 13 from the center panel 17.
[0057]
As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this.
[0058]
For example, although a two-way cassette type air conditioner has been described, it 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.
[0059]
【The invention's effect】
As described above, according to the ceiling-embedded air conditioner according to the present invention, the decorative panel having the air outlet is installed at the lower end of the main body that can be embedded in the ceiling, and the back of the central opening of the decorative panel is installed. A filter for purifying the suction air is disposed in the part, the center opening is closed by the center panel so as to form suction ports on both sides of the center opening, and the center panel and the filter are integrated into a plurality of pieces. In the ceiling-embedded air conditioner that can be moved up and down with respect to the decorative panel by a suspension rope, the suspension rope facing the short direction of the center panel is configured to be connected via a spring. It is possible to satisfactorily prevent the center panel that can be moved up and down integrally with the filter from being tilted and raised and stored.
[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.
2 is a cross-sectional view of the ceiling-embedded air conditioner of FIG.
3 is a perspective view showing a decorative panel, a center panel, a filter, and the like in the ceiling-embedded air conditioner of FIG. 1. FIG.
4 is a perspective view showing a main part of the elevating drive device of FIG. 3;
5 is an exploded perspective view showing the spring, the coupling metal fitting, and the like of FIG. 3;
6 is a perspective view showing the rope guide of FIG. 3;
7 shows the rope guide of FIG. 6, (A) is a plan view, (B) is a front view, (C) is a back view, and (D) is a side view.
8 shows the rope guide of FIG. 6, wherein (A) is a view taken along arrow VIIIA of FIG. 7 (A), and (B) is a cross-sectional view taken along line VIIIB-VIIIB of FIG. 7 (A); (C) is a VIIIC arrow directional view of Drawing 8 (B).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 7 Outlet 9 Cosmetic panel 13 Filter 15 Suction port 17 Center panel 19 Hanging rope 20 Rope guide 21 Spring 23 Lifting drive device 27 Connecting metal fitting 29 Loop 31 Stopping surface 32 Locking hole 34 Slit 35 Stopper 36 Rope receiving surface 38 Rope Receiving groove 43 Insertion opening 44 Contact surface 45 Concavity and convexity

Claims (7)

A decorative panel with an air outlet is installed at the lower end of the main body that can be embedded in the ceiling, and a filter for purifying the intake air is arranged at the back of the central opening of the decorative panel. A center panel closes the center opening to form a mouth, and the center panel and the filter are integrated into a ceiling-embedded air conditioner that can be raised and lowered with respect to the decorative panel by a plurality of hanging ropes. In the device
One end of the suspension rope facing the short direction of the center panel is connected via a spring, and lifting means is installed at a substantially central position in the longitudinal direction of the central opening of the decorative panel. And the other end of each suspension rope that supports the same long side of the center panel among the plurality of suspension ropes is wound up at a position adjacent to each other for each long side. Harmony device.   2. A ceiling-embedded air conditioner according to claim 1, wherein a connecting member is provided at both ends of the spring, and a tip of a suspension rope is detachable from the connecting member.   The center panel is provided with a rope guide having a curved rope receiving surface that contacts the hanging rope and changes the extending direction of the hanging rope at a position facing the short direction. The ceiling-embedded air conditioner according to claim 1 or 2.   4. The ceiling-embedded air conditioner according to claim 3, wherein the rope receiving surface of the rope guide is formed with irregularities in a portion in contact with the suspension rope.   The ceiling-embedded air conditioner according to claim 3 or 4, wherein the rope receiving surface of the rope guide is configured such that a hanging rope is hooked from a side thereof.   6. The rope guide according to claim 3, wherein the rope guide is provided so as to be able to contact a connecting member provided at both ends of the spring so as to prevent excessive extension of the spring. The ceiling-embedded air conditioner described in 1.   The ceiling embedding according to any one of claims 1 to 6, wherein the suspension rope facing the short direction of the center panel passes between the center panel and the filter and is connected by a spring. Type air conditioner.

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