JP2001147042A - Ceiling-embedded air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling-embedded air conditioner the inside of which can be inspected and cleaned easily. SOLUTION: A ceiling-embedded air conditioner is constituted, with a panel composed of a central panel, a decorative panel, and a panel frame 16 attached to the lower surface of a main body casing 1 hung from an upper wall surface in a ceiling, by means of hanging bolts 26 and nuts 32 and 33. Hangers 24, which are hung from the bolts 26, are fixed to the four corner sections of the casing 1, and the lower ends of at least two diagonal hangers 24 are extended downwardly and are bent into L-shapes to form locking sections 34. Then projecting section 43, which are locked to the locking section 34 from the downside and locking clicks 41 provided with projecting section 44 having downwardly protruded front ends, are provided on the panel frame 16. In addition, insertion holes for inserting fixing screws are formed in the frame 16, and the fixing screws are screwed in the screw-fit sections of the hangers 24.

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, and more particularly, to a structure for mounting a panel to a main body casing.

[0002]

2. Description of the Related Art A conventional ceiling-mounted air conditioner, as disclosed in Japanese Patent Application Laid-Open No. 6-82058, has options such as a decorative panel and a filter box provided on a lower surface of a main body casing. When installing equipment,
An upper suspending device provided at substantially the center of the main body casing was temporarily fixed by locking a lower suspending device provided at substantially the center of the optional device such as the filter box, and provided at substantially a center of the optional device such as the filter box. The structure was such that a lower hanging device provided substantially at the center of the decorative panel was locked and temporarily fixed to the upper hanging device, and then each was fixedly attached with a fastening bolt.
Further, for example, as shown in Japanese Patent Application Laid-Open No. 5-133549, when a ceiling-embedded air conditioner is installed on a ceiling, when a decorative panel is mounted on a lower surface of a main body casing, first, an upper wall surface above the ceiling is installed. The more hanging hanging bolts are inserted through the insertion holes of the temporary fixing fittings provided on the side surfaces of the main body casing, and are temporarily fixed with nuts. Next, the decorative panel is attached to the hanging bolts, and the nuts are used for the decorative makeup. The panel was pushed up to be in close contact with the lower surface of the main body casing and in close contact with the ceiling surface, and thereafter, the decorative panel and the main body casing were fixed with fixing screws.

[0003]

However, in a configuration in which the hanging member for temporarily fixing the main body casing and the decorative panel is provided at the center which is the passage of the blowing air, the hanging member acts as a flow resistance of the blowing air. Problems such as a decrease in the air flow and an increase in the air noise due to the wind noise occur. Further, in a configuration in which the decorative panel is pushed up with a nut together with the main casing in order to bring the decorative panel into close contact with the temporarily fixed lower surface and the ceiling surface, when the nut is tightened, the entire weight of the decorative panel and the main casing is applied as a load. For this reason, installation work becomes difficult, and when the decorative panel is removed for inspection of the inside of the main body casing, cleaning of the heat exchanger, and the like, a load is similarly applied, and there is a problem that removal of the nut is difficult.
In the present invention, in view of the above problems, an object of the present invention is to provide a recessed ceiling type air conditioner that can easily perform internal inspection and cleaning without lowering the basic performance as an air conditioner. And

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a structure in which a lower surface of a main body casing suspended by hanging bolts and nuts hanging from an upper wall surface above the ceiling is provided. An openable and closable central panel that covers the whole and forms a suction opening hole that guides air to the suction port in the center, and forms a rectangular cutout outlet on the four sides.
A decorative frame that surrounds the outer periphery of the central panel in a square frame shape, and a square frame shape that is disposed above the central panel and that rotatably supports wind direction change plates on four sides so as to be arranged at the outlets. A panel formed of a panel frame of the type described above, and an air passage formed in the main body casing and connecting the suction port and the air outlet, having a vertical drive shaft opposed to the suction port. In a ceiling-embedded type air conditioner including a blower including a motor and a fan and a heat exchanger disposed so as to surround the blower, the fan is suspended from the hanging bolts at four corners of the main body casing. A hanging part is fixed to the hanging part, and at least two diagonal lower ends of the hanging part are extended downward to provide a locking portion having an L-shaped tip. It has a projection that locks, And a fixing hole is formed in the panel frame, and a fixing screw is screwed into a screwing portion provided on the hanging member. After the panel frame is temporarily fixed to the main body casing by locking the claws, the panel frame is permanently fixed by the fixing screw.

[0005] Further, a first tapered portion is provided at a base above the locking claw.

[0006] A second tapered portion is provided above the convex portion of the locking claw.

[0007] Further, the hanging member is fixed to the main body casing by a set of bolts and nuts.

Further, a first positioning projection is projected from the hanging tool, and a positioning hole for fitting the first positioning projection is formed in the main body casing.

Further, the first positioning projection and the positioning hole are formed so that the first positioning projection and the positioning hole are positioned only in one rotation direction in which the hanging member rotates about the bolt as a rotation axis. A configuration in which a clearance is provided between the positioning hole and the other rotation direction, and a second positioning protrusion is provided on the main body casing, the outer surface of the hanging member abutting when rotated in the other rotation direction. It has become.

[0010] Further, the hanging member is formed of a thin steel plate.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the embodiments of the present invention shown in FIGS.
First, the overall configuration of the ceiling-mounted air conditioner shown in the cross-sectional view of FIG. 1, the exploded perspective views of FIGS. 2 and 3, the perspective view of FIG. 4, and the perspective plan view seen from below in FIG. . Reference numeral 1 denotes a top plate 4 formed by press-forming a steel plate such as SECC (Electro Galvanized Steel Plate) having a heat insulating wall 3 formed in a ceiling surface 2 and having a heat insulating material such as styrene foam inside. 5, a blower including a motor 7 and a fan 8 provided in the center of the main body casing 1 and having a drive shaft in the vertical direction, and 9 a blower 6
A heat exchanger 10 provided under the heat exchanger 9 is provided below the heat exchanger 9 and provided with blow-out ports 11 on four sides and formed of a heat insulating material such as styrene foam.
Electrical component storage unit 1 arranged in the center of the vehicle and opened downward on one side
3 and a bell mouth having a storage portion cover 14 covering the electrical component storage portion 13 and having a suction port 15 formed in the center.

A wind direction changing member 16 is provided to surround the periphery of the dew receiving tray 10 and rotatably supports a wind direction changing plate 17 provided at the four sides of the air outlets 11. The wind direction changing plate 17 is connected and driven. A panel frame 19 made of a synthetic resin such as ABS (acrylonitrile butadiene styrene), in which the device 18 is mounted on four corners, covers the suction port 15 from both sides and the inside of the outlet 11 and has a suction opening in the center. Openable and Detachable ABS (Acrylic Nitrile Butadiene Styrene) with Multiple Filters 20 and Filter 21
A center panel 22 made of a synthetic resin such as a synthetic resin, such as ABS (acrylonitrile butadiene styrene), covers the outer periphery of the outlet 11 from the outer periphery of the four corners 23 of the central panel 19. The frames 24 are fixed to four corners of the side plate 5 of the main body casing 1 and are attached to hanging bolts 26 hanging from an upper wall surface 25 behind the ceiling, thereby supporting the main body casing 1 and the panel frame. S supporting 16
These are four hanging members formed by steel plates such as ECC (Electro Galvanized Steel Plate).

Next, FIG. 1 is a cross-sectional view, FIG. 6 is a perspective view of a hanging part, FIG. 7 is a main part side view, FIG. 8 is a main part perspective view, and FIG. 9 and FIG. A detailed configuration of the invention will be described. In the hanging member 24, 27 is an insertion hole through which a bolt 28 for fixing the hanging member 24 to the side plate 5 of the main casing 1 is inserted, and 29 is a side for positioning the hanging member 24 with respect to the main casing 1. The bent first positioning projections 30 are bent laterally to form cutout holes 31 through which the suspension bolts 26 are inserted, and suspensions held by nuts 32, 33 screwed into the suspension bolts 26. And 34, a locking portion extending downward at least two diagonal lower ends of the four hanging members 24 and forming an L-shaped tip, and 35 bent sideways to form the panel frame 16. And a stud nut 38 for screwing a fixing screw 37 to be inserted into the inserted insertion hole 36.

Reference numeral 39 denotes a positioning hole through which the first positioning projection 29 is inserted to position the hanging device 24 in the up-down direction with respect to the main body casing 1. Reference numeral 40 denotes an abutting left and right outer shape of the hanging device 24. The hanger 2 is attached to the casing 1
4 is a second positioning projection formed by bead processing on the side plate 5 for performing positioning in the left-right direction. Reference numeral 41 denotes a first tapered portion 42 which is formed integrally with the panel frame 16 and is provided at a base of the panel frame 16, and a locking portion 34 of the hanging member 24.
An engaging claw provided with a projection 43 for engaging with the projection 43 and a projection 44 whose tip protrudes downward. Reference numeral 45 denotes a second tapered portion formed above the projection 43.

Next, referring to FIG. 1 to FIG.
The operation and effect of the present invention will be described. First, when the hanging tool 24 is fixed to the side plate 5 of the main casing 1,
The first positioning projection 29 is inserted through the positioning hole 39, and the bolt 28 is inserted through the insertion hole 27 and an insertion hole (not shown) formed in the side plate 5.
The nut 46 is temporarily fixed. Using the bolt 28 as a rotation axis, the first positioning projection 29 is inserted into the positioning hole 39.
And the outer shape of the hanger 24 is positioned in the other rotation direction by abutting the outer shape of the hanger 24 on the second positioning projection 40.
Position can be determined accurately.

If the first positioning projection 29 and the positioning hole 39 are in a fitting relationship with little clearance, the second positioning projection 40 can be omitted. However, if the positioning depends only on the fitting relationship between the first positioning projection 29 and the positioning hole 39, the fitting cannot be performed unless the bending accuracy of the first positioning projection 29 is high. In addition, the bending accuracy is the least accurate processing in sheet metal processing, and there are problems such as deterioration in yield.
In this regard, it may be advantageous in terms of processing accuracy if the positioning is shared between the first positioning projection 29 and the second positioning projection 40 for each rotation direction. Since there is a clearance between the first positioning projection 29 and the positioning hole 39, there is also a merit that the assembly is easy. After the positioning, the bolt 28 and the nut 46 are fully tightened and fixed.

The nut 32 is attached to the suspension bolt 26,
The body casing 1 can be hung above the ceiling by holding the hanging portion 30 of the hanging tool 24 with 33. A locking portion 34 of the hanging tool 24 attached to four corners of the main body casing 1 hung above the ceiling,
Lift the panel frame 16 so that the locking claw 4
The convex portion 43 is smoothly engaged while being sequentially guided by the first taper portion 42 and the second taper portion 45,
The panel frame 16 is temporarily fixed to the main body casing 1. The locking portion 34 of the hanging tool 24 and the panel frame 1
Since the 6 locking pawls 41 need only be temporarily fixed, they need only be provided at least at two diagonal positions among the four corner portions. The panel frame 16 is attached to the lower surface of the main body casing 1 by inserting the fixing screw 37 into the insertion hole 36 of the panel frame 16 and screwing the fixing screw 37 to the threaded portion 35 of the hanging tool 24. When the center panel 19 is mounted on the panel frame 16 and closed, the panel frame 16 is covered by the center panel 19, and the internal structures such as the locking claws 41 and the fixing screws 37 become invisible. Disappears.

When inspecting and repairing the inside of the main body casing 1 and cleaning the heat exchanger 9 therein, first,
The center panel 19 is removed from the panel frame 16.
Next, the fixing screw 37 is removed, but the panel frame 16 is locked by the locking portion 34 of the hanging tool 24, and there is no fear of dropping. Next, while supporting the panel frame 16 with one hand, the protruding portion 44 is pushed with the finger of the other hand to bend the locking claw 41, and the locking claw 41 is moved from the locking portion 34 of the hanging tool 24. Of the panel frame 1 by removing the convex portion 43 of
6 can be easily removed. After that, the dew tray 1
By removing the bell mouth 12 and the bell mouth 12, the inside of the main casing 1 can be seen, and the inspection and repair of the inside and the cleaning of the heat exchanger 9 can be easily performed.

[0019]

As described above, according to the present invention,
The ceiling-mounted air conditioner allows easy inspection and cleaning of the inside without lowering the basic performance of the air conditioner.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the overall configuration of a ceiling-mounted air conditioner according to the present invention.

FIG. 2 is an exploded perspective view showing the upper part of the overall configuration of the ceiling-mounted air conditioner according to the present invention.

FIG. 3 is an exploded perspective view showing a lower part of the overall configuration of the ceiling-mounted air conditioner according to the present invention.

FIG. 4 is a perspective view showing the overall configuration of a ceiling-mounted air conditioner according to the present invention.

FIG. 5 is a perspective plan view showing the entire configuration of the ceiling-mounted air conditioner according to the present invention as viewed from below.

FIG. 6 is a perspective view of a hanging part showing one embodiment of the ceiling-mounted air conditioner according to the present invention.

FIG. 7 is a side view of a main part showing one embodiment of the ceiling-mounted air conditioner according to the present invention.

FIG. 8 is a perspective view of an essential part showing an embodiment of an embedded ceiling air conditioner according to the present invention.

FIG. 9 is a cross-sectional view of a hanging part and a panel frame locking portion showing an embodiment of a ceiling-embedded air conditioner according to the present invention.

FIG. 10 is a cross-sectional view of a fixing portion between a hanging tool and a panel frame, showing an embodiment of an embedded ceiling air conditioner according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body casing 2 Ceiling surface 6 Blower 7 Motor 8 Fan 9 Heat exchanger 11 Outlet 15 Suction port 16 Panel frame 17 Wind direction change board 19 Central panel 20 Suction opening hole 22 Decorative frame 24 Hanging tool 25 Upper wall surface 26 Hanging bolt 27 Insertion hole 28 Bolt 29 First positioning convex portion 32, 33 Nut 34 Locking portion 35 Screw portion 36 Insertion hole 37 Fixing screw 39 Positioning hole 40 Second positioning convex portion 41 Locking claw 42 First taper portion 43 Convex portion 44 Projecting part 45 Second taper part 46 Nut

Claims (7)

[Claims] 1. A suction opening, which covers the entire lower part of the main body casing and guides air to a suction port in the center, on the lower surface of the main body casing suspended by hanging bolts and nuts suspended from an upper wall surface above the ceiling. A central panel that can be opened and closed freely, and is formed with a rectangular cutout on the four sides.
A decorative frame that surrounds the outer periphery of the central panel in a square frame shape, and a square frame shape that is disposed above the central panel and that rotatably supports wind direction change plates on four sides so as to be arranged at the outlets. A panel formed of a panel frame of the type described above, and an air passage formed in the main body casing and connecting the suction port and the air outlet, having a vertical drive shaft opposed to the suction port. A ceiling-embedded air conditioner comprising a blower comprising a motor and a fan and a heat exchanger arranged so as to surround the blower, wherein the hanging bolts are suspended at four corners of the main body casing. A hanging part is fixed to the hanging part, and at least two diagonal lower ends of the hanging part are extended downward to provide a locking portion having an L-shaped tip. It has a projection that locks, The panel frame is provided with an insertion hole through which a fixing screw is inserted, and the fixing screw is screwed into a screwing portion provided on the hanging member. A ceiling-embedded air conditioner, wherein the panel frame is temporarily fixed to the main body casing by locking a pawl, and then permanently fixed by the fixing screw. 2. A ceiling-embedded air conditioner according to claim 1, wherein a first tapered portion is provided at a base above the locking claw. 3. The ceiling-embedded air conditioner according to claim 1, wherein a second tapered portion is provided above the convex portion of the locking claw. 4. The ceiling-mounted air conditioner according to claim 1, wherein the hanging member is fixed to the main body casing with a set of bolts and nuts. 5. A first positioning projection is protruded from the hanging member,
The ceiling-embedded air conditioner according to claim 4, wherein a positioning hole for fitting the first positioning protrusion is formed in the main body casing. 6. The first positioning projection and the positioning hole are formed so that the first positioning projection and the positioning hole are positioned only in one rotation direction in which the hanging tool rotates about the bolt as a rotation axis. A clearance is provided between the positioning hole and the other rotation direction, and a second positioning protrusion is provided on the main body casing to which the outer shape of the hanging tool abuts when rotated in the other rotation direction. The ceiling-mounted air conditioner according to claim 5, wherein 7. The ceiling-mounted air conditioner according to claim 1, wherein the hanging member is formed of a thin steel plate.