JP3312871B2 - Ceiling-type air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air conditioner such as a cooling / heating device or a cooling device, and more particularly, to a ceiling type air conditioner such as a factory or a warehouse which is hung at a high place near the ceiling. Improve the workability of cleaning the air conditioner and keep the equipment in good condition.

[0002]

2. Description of the Related Art Conventionally, in a building having a relatively high ceiling such as a factory or a warehouse, there is a ceiling-suspended type air conditioner of the type suspended from a height near a ceiling, for example, as shown in FIG. That is, a fan a for air circulation that introduces air A from the surroundings and discharges the air A through an outlet b that is installed substantially below the center;
A heat exchange coil c for cooling air provided on the upper outer periphery of the fan a, and a drain pan disposed on the lower surface of the heat exchange coil c by draining drain water W flowing close to the periphery of the heat exchange coil c d. In FIG. 6, M 'is a motor for driving and rotating the air circulation fan a, and e is an electric wiring connected to the motor M'. f is a pipe connection port to which a pipe member g for supplying cold water or hot water is connected, and h is a drain connection port for draining drain water W flowing to a drain pan d. And
Motor M ', pipe connection port f, wiring e with respect to main plate i
Etc. are attached. Further, a plurality of heat exchange coils c are provided between the upper plate i of the main body and the lower plate j of the main body, and a drain pan d provided with a drain connection port h is provided on the lower surface of the heat exchange coil c. The stay bolt k is assembled using a nut m screwed into the threaded portion l of the stay bolt k. The ceiling-suspended air conditioner thus assembled includes, for example, four suspension bolts p hanging from a mounting bracket o fixed to a beam member n used for a framework such as a ceiling, and screws of the suspension bolt p. a nut q screwed to part p _1, said a bifurcated lifting lugs r being held between the nut q, inserted between the forked portions r _1, r ₁ of該吊Ri bracket r on the body portion A metal fitting s having a substantially L-shaped cross section fixed to the upper surface of the plate i and having a substantially square planar shape, and screw holes t _1, t ₂ , and t ₂ provided in the bifurcated portions r ₁ , r _1. a bolt v which is threaded in a direction intersecting with respect to hanger bolts p, the air conditioner using a nut v ₁ which is screwed into該止Me bolt v is suspended near the ceiling. In this way, ceiling-mounted air conditioners that are installed at high places near the ceiling of buildings with relatively high ceilings, such as factories and warehouses, so as not to interfere with work,
When the motor M 'rotates, the fan a rotates, so that the surrounding air is cooled or warmed through the heat exchange coil c, so that the cool air or warm air flows in a substantially vertical direction (downward in the figure) from the outlet b. The wind blows down, effectively cooling or heating a wide area.

[0003]

However, the above-described conventional ceiling-mounted air conditioner shown in FIG. 6 cannot be used in a building such as a factory or a warehouse where a relatively large amount of dust and dirt is floating in the air. The air conditioner itself sucks the floating dirt, and for example, a drain pan d together with dew water generated by dehumidification during cooling.
Is discharged into The dirt having a relatively low specific gravity is drained together with the drain water W to a drain pipe connected to the drain connection port h. Those having a relatively high specific gravity, such as dust, are deposited in the drain pan d. Oil floating in the air also accumulates in the drain pan d and mixes with dust and other dirt to form a slime state. Therefore, drain drainage is hindered. Moreover, the dirty drain pan d contains bacteria,
It became a hotbed where mold and the like proliferate, and was unsanitary. Therefore, in the conventional ceiling-mounted air conditioner, it is indispensable to periodically clean the drain pan d, in particular, to clean the drain pan d. However, in the above conventional ceiling-mounted air conditioner,
To perform cleaning in the drain pan d, first, there remove the entire air conditioner needs to down on the floor with respect to bolt v and nuts v ₁ of tightening solved hanger r and hanger bolts p. In addition, since the entire air conditioner must be disassembled and cleaned, it is difficult to perform maintenance in a building such as a distribution warehouse that operates for 24 hours. Moreover, since the above-mentioned conventional ceiling-mounted air conditioner is mounted at a high place such as near the ceiling, the connecting portion of the pipe is removed near the ceiling using a scaffold for working at a high place such as a tower, or the motor M ' After the wiring e connected to the main body is removed or further lowered on the floor, the nut m is screwed away from the stay bolt k to remove the assembly of the main body lower plate j to the main body upper plate i. Will be needed. As described above, the conventional ceiling-suspended air conditioner requires a lot of labor and work to clean the drain pan d and the like, and the workability is poor. In addition, assembling after cleaning also requires much time and labor.

Accordingly, the present invention solves the inconvenience of the above-mentioned conventional ceiling-mounted air conditioner, and a pipe member for supplying cold water or hot water while being suspended without releasing the suspension of the upper unit body with respect to the suspension fittings or the like. A ceiling-mounted air conditioner that eliminates the need to remove wiring and other parts from the motor and motor, and allows for easy work operation and efficient cleaning of drain pans and the like without the need for much labor and time. To provide.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a first aspect of the present invention is to provide a fan for circulating air for introducing air from the surroundings and discharging the air through an air outlet installed substantially below the center. A heat exchange coil for air cooling provided on the upper outer periphery of the heat exchange coil, and a drain pan in which drain water flowing close to the periphery of the heat exchange coil is drained and disposed on the lower surface of the heat exchange coil. A ceiling-mounted air conditioner that blows cold or warm air in a substantially vertical direction from the outlet, and a lower unit body including the drain pan,
A desired plurality of hanging rods whose lower parts protrude are inserted into the upper unit body including the main body upper plate, the fan, and the heat exchange coil so as to be able to descend, and the lower part is attached to the hanging rod. Means of providing a locking means for the lower unit body at the position is adopted.

According to a second aspect of the present invention, in the first aspect, the suspension rod is provided with a holding means for assembling the lower unit body to the upper unit body at a lower position of the lower unit body including a drain pan. The means provided above the means is employed.

According to a third aspect of the present invention, in the first or second aspect, the suspension rod is a bolt, and the bolt has a length longer than an assembly height from the heat exchange coil to the lower unit body. By being formed, the lower portion protrudes from the lower surface of the lower unit body and is assembled, and a nut provided as a holding means for supporting the lower surface of the lower unit body is provided on a screw portion provided on the peripheral surface of the lower unit body. At the lower position below, a means for screwing a cap nut, which is a locking means capable of locking the nut, is employed.

According to a fourth aspect of the present invention, in the first or second aspect, the hanging rod is formed to have a length longer than an assembly height from the heat exchange coil to the lower unit body, and the lower part is formed in the lower part. A notch operably protruding from the lower surface of the unit body and capable of engaging and disengaging a substantially sawtooth-shaped locking tooth provided on a peripheral surface of the lower portion, and supporting the lower surface of the lower unit body; A means is employed in which a holding body as a holding means is loosely inserted into a hanging rod, and a locking body as a locking means capable of locking the holding body is provided at a lower position below the holding body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of an embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, a fan 1 for air circulation that introduces air A from the surroundings and discharges it through an outlet 2 arranged substantially below the center, and a heat exchange coil 3 for cooling air provided on the outer periphery of the upper part of the fan 1
And a drain pan 4 from which drain water W flowing close to the periphery of the heat exchange coil 3 is drained and arranged on the lower surface of the heat exchange coil 3. Or, it is the same configuration as the above-mentioned conventional ceiling-mounted air conditioner shown in FIG.

However, the ceiling-suspended air conditioner of the present embodiment comprises a lower unit body U including a drain pan 4, a main body lower plate 5 installed on the lower surface of the drain pan 4, and the outlet 2, A bolt 7 as a hanging rod into which a plurality of desired parts are inserted so that a lower part 7a protrudes from an upper unit body U 'including the upper plate 6, the fan 1 and the heat exchange coil 3, and a screw It is assembled so as to be able to descend by a nut 8 as a holding means to be combined.

The bolt 7 is formed to have a length L longer than an assembling height H from the heat exchange coil 3 to the lower unit body U, so that a lower portion 7a projects from the lower surface of the lower unit body U. Assembled. In addition, a nut 8 serving as a holding means for supporting the lower surface of the lower unit body U is provided on a screw portion 7b provided on the peripheral surface of the lower portion 7a of the bolt 7, and a locking means is provided at a lowered position below the nut 8. The cap nut 9 is screwed in two steps with different heights to prevent the lower plate 5 of the main body from dropping off.

Reference numeral 10 denotes a main body upper plate 6 of the upper unit body U '.
And a support bolt 11 that supports the lower surface of the heat exchange coil 3 and is inserted into a coil support plate 11 provided on the upper surface of the drain pan 4. The stay bolt 10 is formed by screwing a nut 12 to a screw portion 10 a thereof. By doing so, the upper unit body U ′ such as the heat exchange coil 3 is connected to the main body upper plate 6. The stay bolt 10 has a length L ′ shorter than the bolt 7, and a plurality of desired bolts are individually inserted into the outer periphery of the bolt 7.

A beam member 13 used for a framework such as a ceiling
The means for suspending and mounting the ceiling-mounted air conditioner on the ceiling are, for example, four suspension bolts 15 suspended from a fitting 14 fixed to the beam member 13 in the same manner as in the conventional method shown in FIG.
Nut 1 screwed into screw portion 15a of hanging bolt 15
6 and a bifurcated hanging bracket 17 sandwiched between the nuts 16
And a metal fitting 18 having a substantially L-shaped cross section and a substantially rectangular planar shape, which is inserted between the forked portions 17a, 17a of the hanging metal 17 and is fixed to the upper surface of the main body upper plate 6. Formed by screw bolts 19 provided in the portions 17a, 17a; stop bolts 21 which are screwed into the suspension bolts 15 in a direction crossing the suspension bolts 15; Is done. However, the suspending means of the illustrated ceiling-suspended air conditioner is an example, and the present invention is not limited to this, and other suspending means may be used.

M is a motor for driving and rotating the fan 1 for air circulation, and 22 is an electric wiring connected to the motor M. Reference numeral 23 denotes a pipe connection port to which a pipe member 24 for supplying cold water or hot water is connected.
Is a drain connection port for draining drain water W flowing to the drain pan 4. Reference numeral 26 denotes a louver which is attached to the opening below the outlet 2 to change the air direction and air volume.

One embodiment of the present invention has the above configuration.
Near ceilings in buildings where many dusts and debris are floating in the air, such as factories and warehouses, for example, a ceiling-mounted air conditioner suspended on beams 13 as a framing member can reduce dust and debris in the air. In order to suck in dirt or to drain together with dew water generated by dehumidification during cooling, or to clean the inside of the drain pan 4 when it becomes dirty with dust, first, FIG.
As shown in FIG. 5, a mounting bracket 14 fixed to the beam 13, four hanging bolts 15 hanging from the mounting bracket 14,
A fork-shaped hanging member 17 suspended from the hanging bolt 15 by a nut 16 screwed to the hanging bolt 15, and a substantially L-shaped section inserted into the forked portions 17 a, 17 a of the hanging member 17. The heat exchange coil 3 is mounted on the main body upper plate 6, which is suspended near the ceiling using the members of the metal fitting 18, using a plurality of desired stay bolts 10 and nuts 12.
The lower unit body U including the drain pan 4 is lowered with respect to the upper unit body U 'to which the coil support plate 11 on which the lower surface is supported is mounted while maintaining the suspended state.

To lower the drain pan 4, the lower unit U including the drain pan 4, the main body lower plate 5 installed on the lower surface of the drain pan 4, and the outlet 2 is transferred from the heat exchange coil 3 to the lower unit U. The upper unit body U 'and the lower unit body U have a length L longer than the final assembling height H, and the lower part 7a projects from the lower surface of the main body lower plate 5 of the lower unit body U. Then, the screwing of the nut 8 as the holding means is loosened with respect to the threaded portion 7b of the bolt 7 as the hanging rod, which is screwed into the inner peripheral position of the stay bolt 10.

As described above, when the screwing of the nut 8 is loosened with respect to the threaded portion 7b of the bolt 7 to lower the mounting position of the lower unit body U, as shown in FIG. The lower unit body U, which has a predetermined mounting height H and whose lower surface is supported by the nut 8 as a holding means, is lowered by being guided by the bolt 7 with respect to the upper unit body U '. Further, since a cap nut 9 serving as a locking means is screwed into a low position at the tip of the screw portion 7b of the bolt 7, the nut 8 is lowered and the drain pan 4 is lowered together until it comes into contact with the cap nut 9. As a result, further unintentional dropping is prevented, and a sufficient gap K is provided between the coil supporting plate 11 (see FIG. 2).

Thus, cleaning can be easily and reliably performed through the gap K. Thus, the cleaning of the inside of the drain pan 4 includes the upper unit body U 'including the main body upper plate 6, the fan 1, and the heat exchange coil 3, the drain pan 4, the main body lower plate 5, and the heat exchange coil 3. With the ceiling-mounted air conditioner consisting of the lower unit U suspended from the ceiling or the like,
Moreover, cleaning can be performed without removing the pipe member 24 for supplying cold or hot water from the pipe connection port 23 of the upper unit body U and without removing the electric wiring 22 connected to the motor M. The stain on the drain pan 4 can be removed.

When necessary, the drain pan 4 and the main body lower plate 5 are attached to the upper unit body U 'by removing the cap nut 9 serving as locking means screwed to the tip of the screw portion 7b of the bolt 7 from the screw portion 7b. On the other hand, the drain pan 4 and the like can be washed after the connection is released and the floor is lowered from the vicinity of the ceiling to the floor.

After the cleaning of the drain pan 4 is completed, the nut 8 serving as a holding means is screwed into the threaded portion 7b of the bolt 7 serving as a hanging rod, thereby being lowered by the guide of the bolt 7, and is in a suspended state. The drain pan 4 and the main body lower plate 5 are lifted, and the lower unit body U including the drain pan 4 is fastened to the upper unit body U 'with the nut 8 to assemble it to the former position as shown in FIG.

FIGS. 3 to 5 show a second embodiment of the present invention. In the first embodiment shown in FIGS. 1 and 2, a bolt 7 is used as a hanging rod for hanging a lower plate 5 provided with a drain pan 4. Further, holding means for assembling the lower unit body U to the upper unit body U 'is provided above the cap nut 9 screwed into the screw portion 7b of the bolt 7 as locking means for restricting the lowering position of the main body lower plate 5. It is formed by screwing the nut 8 so that it can be locked to the cap nut 9. However, in this embodiment, the main body lower plate 5
A suspension rod 7 'is used for suspending the suspension unit, and the suspension rod 7' is formed to have a length L longer than an assembly height H from the heat exchange coil 3 to the lower unit body U. The lower part 7'a of the lowering rod 7 'is assembled by projecting from the lower surface of the lower unit body U. Further, this assembling is performed by attaching substantially saw-tooth-shaped locking teeth 7 'to the peripheral surface of the lower portion 7'a of the suspension rod 7'.
b, and a lower portion 7'a of the suspension rod 7 'is provided with a notch 8'A which is detachably engaged with the engaging tooth 7'b.
Is provided on the holding body 8 'which is loosely inserted into the holding unit 8', thereby forming holding means for supporting and holding the lower surface of the lower unit body U by the holding body 8 '. Reference numeral 9 'denotes a locking member provided at the lower end of the hanging rod 7' located at a lower position below the holding member 8 '. It can be locked. If necessary, the notch 8'A can be constantly biased toward the locking teeth 7'b by the elastic force of a spring material such as a torsion spring wound around the pivot shaft. In order to clean the drain pan 4, the notch 8'A is rotated from the outside about the pivot shaft to thereby provide a substantially saw-toothed locking tooth 7'b provided on the peripheral surface of the hanging rod 7 '. Disengage the notch 8'A
Alternatively, the main body lower plate 5 is lowered to a desired position by sliding the holding body 8 'downward while being guided by the hanging rod 7', for example, by engaging the notch 8'A with the locking tooth 7'b. The difference from the first embodiment is that the drain pan 4 is cleaned through the gap K provided between the coil pan 11 and the coil support plate 11.

[0022]

As described above, the present invention provides a lower unit body including a drain pan, a main body lower plate and an air outlet installed on the lower surface of the drain pan, and an upper unit including a main body upper plate, a fan and a heat exchange coil. Since the lower unit is assembled and suspended so as to be able to descend by inserting a desired plurality of suspension rods into the unit, it is possible to release the suspension of the upper unit from the suspension fittings and the like as in the related art. It is easy to work with a simple handling operation without hanging and removing the piping and the wiring to the motor to supply cold or hot water and wiring, etc. Can be cleaned.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a ceiling-mounted air conditioner of the present invention.

FIG. 2 is a cross-sectional view of a drain pan in which a lower unit body is lowered with respect to an upper unit body during cleaning.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of the drain pan when the lower unit body is lowered with respect to the upper unit body at the time of cleaning.

FIG. 5 is an explanatory enlarged sectional view of the same.

FIG. 6 is a sectional view showing an example of a conventional ceiling-mounted air conditioner.

[Description of Signs] 1 Fan 2 Blow-out port 3 Heat exchange coil 4 Drain pan 5 Main body lower plate 6 Main body upper plate 7 Bolt 7a Lower part 7b Screw part 7 'Hanging rod 8 Nut 8' Holder 8'A Notch 9 Bag Nut 10 Stay bolt 12 Nut L Length H Assembly height U Lower unit body U 'Upper unit body

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 13/32 F24F 1/00 361

Claims (4)

(57) [Claims] 1. A fan for air circulation for introducing air from the surroundings and discharging the air through an air outlet installed substantially below the center, a heat exchange coil for air cooling provided on an outer periphery of the fan, A drain pan for discharging drain water flowing close to the periphery of the exchange coil, and a drain pan disposed on the lower surface of the heat exchange coil, wherein the fan blows cool air or warm air in a substantially vertical direction from the outlet by the fan. The lower unit body including the drain pan is inserted into the upper unit body including the main body upper plate, the fan, and the heat exchange coil by inserting a plurality of desired hanging rods having lower portions projecting therefrom. A ceiling-suspended air conditioner, wherein the hanging rod is provided with locking means for a lower unit body at a lowered position on the hanging rod. 2. The suspension rod according to claim 1, wherein holding means for assembling the lower unit body to the upper unit body is provided above locking means provided at a lower position of the lower unit body including a drain pan. The ceiling-mounted air conditioner according to claim 1. 3. The hanging rod is a bolt, and the bolt is formed to have a length longer than an assembly height from the heat exchange coil to the lower unit body, so that a lower portion protrudes from a lower surface of the lower unit body. A nut as a holding means for supporting the lower surface of the lower unit body is mounted on a screw portion provided on the peripheral surface of the lower portion, and the nut can be locked at a lower position below the nut. 3. The ceiling-mounted air conditioner according to claim 1, wherein the cap nuts serving as locking means are screwed respectively. 4. The hanging rod is formed to have a length longer than an assembling height from the heat exchange coil to the lower unit body, and a lower part is assembled by projecting from a lower surface of the lower unit body. A notch which can be disengaged from a substantially serrated locking tooth provided on the peripheral surface is operably provided, and a holding body serving as holding means for supporting a lower surface of the lower unit body is loosely inserted into a hanging rod. The ceiling-suspended air conditioner according to claim 1 or 2, wherein a locking body as locking means for locking the holding body is provided at a lower position below the holding body. vessel.