JPH11230569A - Ceiling buried air-conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling-buried air-conditioner for improving servicing when an air suction port is formed on either the rear surface or the bottom surface of a casing. SOLUTION: In an ceiling-buried air-conditioner that is provided with a box-shaped casing being buried into a ceiling, a blower and a heat exchanger at a use side being accommodated in the casing, and an electrical component box 7 being attached to the casing, an opening 31 that faces an edge part in the axial direction of the blower is formed at a casing side plate 11, at the same time the electrical component box 7 is constituted of a base part 71 for placing electrical components such as a control substrate 8 and a power supply terminal block 9 and a lid part 72 for covering the electrical component placement surface of the base part 71, and the opening 31 of the casing side plate 11 is blocked so that it can be opened and closed by the base part 71.

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 buried in a ceiling.

[0002]

2. Description of the Related Art FIG. 9 is a perspective view of a conventional ceiling-mounted air conditioner, in which 90 is a box-shaped casing, and 91 is a box-shaped casing.
Is a bellows-shaped suction duct for connecting an air suction opening formed in a ceiling panel (not shown) to an air suction port on the bottom surface of the casing 90, and 92 is attached to an air outlet on the front face of the casing 90. It is a flange plate for connecting an air outlet duct (not shown).

FIG. 10 is an exploded perspective view of the ceiling-mounted type air conditioner of FIG. 9, in which the suction duct 91 is not shown. In the figure, 51 and 52 are a pair of casing side plates constituting a casing 90, and 53 is the casing side plate 5
A plate-shaped blower stand provided between 1 and 52, 9
3 is a casing back plate, 94 is an air inlet, 95 is an air outlet, 96 is a blower attached to the surface of the blower stand 53 on the casing back plate 93 side, and 97 is a use side provided near the air outlet 95. Heat exchanger 98, use side heat exchanger 97
, A drain pan 99, a casing bottom plate closing a bottom surface of the casing 90 in front of the blower stand 53, a filter plate 100 provided in the air suction port 94,
An electrical component box 54 is provided on the inner surface of one of the casing side plates 51 near the blower 96 and accommodates electrical components such as a control board and a power terminal block.

FIGS. 9 and 10 show an air inlet 94.
Is formed on the bottom surface of the casing 90, but the air suction port 94 is formed on a casing bottom plate (not shown) different from the casing bottom plate 99.
It is also possible to form an air suction port on the back surface of the casing 90 by removing the casing back plate 93, and thus to position the air suction port on either the bottom surface or the rear surface of the casing 90 in accordance with the installation situation or the like. Crab can be changed.

FIG. 11 shows an end of the casing side plate 51 near the casing back plate 93.
Reference numerals 03 and 104 denote blower stand support portions formed by cutting and raising the casing side plate 51 inward, and a similar blower stand support portion is formed on the other casing side plate 52 (not shown). By using these blower table support portions, both ends of the blower table 53 are
1, 52 are fixedly supported. In addition, the cut-and-raised portion 1 is formed on the upper portion of the casing side plate 51 so as to be cut and raised inward, and the tip of the cut and raised portion is obliquely downward.
05 is formed, and a horizontally long rectangular hole 106 is formed in the lower part of the casing side plate 51.

[0006] As shown in FIGS. 12 to 16, the electric component box 54 is composed of a box main body 57 and a lid 58, and inside the box main body 57, there are electric components such as a control board 55 and a power terminal block 56. It is installed. 59 is a locking portion provided at the lower end of the box body 57, 60 is a hanging piece formed by bending a part of the locking portion 59 downward, 61 is a hanging piece provided at the lower end of the lid 58, 62 Is a tongue extending obliquely downward from the front end of the upper surface of the box body 57, and 63 is an upward locking piece formed by cutting and raising the vicinity of the upper end of the back of the box body 57 outward.

The electric component box 54 is provided with the cut-and-raised portion 1.
The casing side plate 51 can be selectively attached to the inner surface or the outer surface of the casing side plate 51 by using the holes 05 and the square holes 106.
That is, as described above, the air suction port 94 is connected to the casing 9.
When formed on the bottom surface, the electric component box 54 is attached to the inner surface of the casing side plate 51. In this case, FIG.
As shown in FIG. 14 and FIG.
5 is inserted upward from the inside, and the locking portion 59 is
The hanging piece 60 is screwed in a state of being locked at 06. Thereby, the electric component box 54 is fixed to the casing side plate 51.

On the other hand, when the air suction port is formed on the back surface of the casing 90 as described above, the electric component box 54 is attached to the outer surface of the casing side plate 51. In this case, as shown in FIG. 15 and FIG.
05 is inserted downward from the outside, and the hanging piece 61 is screwed.

The blower stand 53 provided with the electric motor, the impeller, the fan casing and the like constituting the blower 96 is attached to the blower supporting portions 101, 102, 103 and 104 provided on the casing side plates 51 and 52 as described above. If the air suction port 94 is provided on the bottom surface of the casing 90, it can be slid downward,
In this state, the blower 96 and the electric component box 54 inside the casing 90 can be inspected from the air suction port 94. On the other hand, when the air suction port is provided on the back surface of the casing 90, the electric component box 54 outside the casing 90 is inspected from an inspection opening or the like formed on a ceiling panel (not shown) near the location where the casing 90 is installed. It is supposed to.

[0010]

However, in the above-mentioned conventional ceiling-mounted type air conditioner, when the air suction port is provided on the back surface of the casing 90, the electric component box 54 is provided on the outer surface of the casing side plate 51, and the lid 58 is provided. Since the screw is fixed to the casing side plate 51 and attached to the casing side plate 51, the entirety of the electric component box 54 is temporarily removed when checking the electrical components such as the control board 55 and the power supply terminal block 56 housed in the electrical component box 54. It had to be removed from the device, and the service was not always good. Further, in this case, since the air suction port 94 on the bottom surface of the casing 90 is closed by the casing bottom plate, there is a problem that the blower 96 cannot be inspected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has a recessed ceiling type capable of improving the serviceability even when the air suction port is formed on either the rear surface or the bottom surface of the casing. It is intended to provide an air conditioner.

[0012]

In order to achieve the above object, the present invention provides a box-shaped casing having an air inlet and an air outlet and buried in a ceiling, and a blower housed in the casing. And a use-side heat exchanger, and an electric component box attached to the casing and accommodating electric components such as a control board and a power supply terminal block, and the blower is provided so as to bridge between a pair of opposed casing side plates of the casing. Attached to the blower stand, the axial direction is orthogonal to the casing side plate, so that the indoor air sucked from the air inlet by this blower is cooled or heated by the use side heat exchanger and then blown out from the air outlet. In the configured ceiling-mounted air conditioner, an opening facing the axial end of the blower is formed on at least one of the casing side plates, and an electric component box is provided. Constitutes a lid portion covering the base portion and the electric equipment mounting surface of the base portion for mounting the refinement is obtained by openably closed by a base portion of the electrical component box opening of the casing side plates.

Further, in the above configuration, the opening of the casing side plate is formed in a size and a shape that allows the blower to be drawn out in the axial direction.

Further, in the above configuration, a protruding portion is formed on the surface of the electric component box base opposite to the electric component mounting surface so as to fit into the opening of the casing side plate.

[0015] In the above structure, an electric motor base slidable in a direction orthogonal to the casing side plate is provided on the blower base,
The electric motor of the blower is attached to the fan stand via the motor stand.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 of the Invention FIG. 1 is an exploded perspective view showing an overall configuration of an embedded ceiling air conditioner according to Embodiment 1 of the present invention, FIG. 2 is an exploded perspective view showing a fan stand, an electric motor stand, and a blower, and FIG. FIG. 4 is a perspective view showing a state where the electric component box is mounted on the outer surface of the casing side plate, and FIG. 5 is a perspective view showing a state where the electric component box is mounted on the inner surface of the casing side plate.

In FIG. 1, reference numeral 10 denotes a casing of a ceiling-mounted air conditioner formed in a box shape, 11 and 12 denote a pair of casing side plates facing each other, 13 denotes a casing top plate, 14 and 15 denote casing bottom plates, 1 is a casing 10
An air inlet 6 formed on the back of the casing 10 is an air outlet formed on the front of the casing 10. 2 is a blower, 4 is a plate-shaped blower stand for mounting and supporting the blower 2, 5
Denotes a use-side heat exchanger provided near the air outlet 6;
Reference numeral denotes an electric component box provided on the outer surface of the casing side plate 11 near the air suction port 1 to accommodate electric components such as a control board and a power supply terminal block. Reference numeral 16 denotes a drain pan provided below the use side heat exchanger 5. The blower stand 4 is provided so as to bridge between the pair of casing side plates 11 and 12 similarly to the above-mentioned prior art, and the bottom surface of the casing 10 on the side of the air suction port 1 is defined by the blower stand 4 as a boundary. The casing 10 is closed by the bottom plate 14 and the bottom surface of the casing 10 on the side of the air outlet 6 is closed by the casing bottom plate 15.

The air inlet 1 is surrounded by casing side plates 11, 12, a casing top plate 13, and a casing bottom plate 14, while the air outlet 6 is surrounded by casing side plates 11, 12, casing It is configured by being surrounded by a top plate 13 and a casing bottom plate 15. Further, the internal space of the casing 10 is partitioned by the blower stand 4 into a space on the air inlet 1 side and a space on the air outlet 6 side.

As shown in FIG. 2, the blower 2 has a double-shaft electric motor 21, impellers 22 fixed to both ends of a shaft of the electric motor 21, and a fan casing 23 for accommodating the impeller 22, respectively. It is comprised including.
An air suction port 24 and an air discharge port 25 are formed in the fan casing 23, and a bell mouth 26 is formed in the air suction port 24.
Is attached.

The motor 21 is mounted on a motor base 41 having a substantially U-shape in plan view, and the motor base 41 is mounted on the blower base 4. More specifically, FIGS. 2 and 3
As shown in FIG. 5, flange portions 42 are respectively formed above and below a substrate portion of the motor base 41, and a substantially Z-shaped cross section extending in the longitudinal direction of the blower base 4 is formed on a surface of the blower base 4 on the side of the air suction port 1. A pair of upper and lower rails 43 is provided. The motor base 41 is slidably supported in a direction along the rail 43 (that is, in a direction perpendicular to the casing side plates 11 and 12) by inserting the flange 42 into a gap between the rail 43 and the blower base 4. I have. Further, a pair of through holes 44 are formed in the blower stand 4, and each fan casing 23 has its air discharge port 25 facing the through hole 44. It is fixed to. As shown in FIG. 4, a substantially rectangular opening 31 facing one axial end of the blower 2 is formed near one end of the casing side plate 11 on the side of the air suction port 1, The electrical component box 7 has a substantially rectangular plate-shaped base portion 71 having a size slightly larger than the opening portion 31 on which electrical components such as the control board 8 and the power supply terminal block 9 for controlling the operation of the electric motor 21 are mounted. , And a shallow box-shaped lid 72 having an opening on one side. Then, the base 71 is attached to the outer surface of the casing side plate 11 by screws or the like (not shown) so as to close the opening 31, and then the cover is provided so as to cover the electrical component mounting surface of the base 71. 72 are attached.

The ceiling-mounted air conditioner includes:
Although a compressor, a decompression device, a heat source side heat exchanger, and the like that constitute a refrigerant circuit together with the use side heat exchanger 5 are also provided,
Illustration and explanation of these are omitted.

In this ceiling-embedded air conditioner, the casing 10 is embedded in the ceiling and the air inlet 1
The air outlet 6 and the indoor space are connected to each other via a duct (not shown). At the time of use, the casing 1 is moved from the air inlet 1 by the blower 2.
After cooling or heating the room air drawn into the room 0 by the use side heat exchanger 5, the room is cooled or heated by blowing the room air through the air outlet 6.

In the ceiling-mounted air conditioner configured as described above, when inspecting electrical components such as the control board 8 and the power supply terminal block 9 housed in the electrical component box 7, the operator must use the casing. The inspection can be performed simply by putting a hand or a head through an inspection opening or the like formed in a ceiling panel (not shown) near the installation location 10 and removing the lid 72 of the electrical component box 7.
The serviceability is better than in the related art in which the entirety is removed from the casing side plate 51.

Inspection of the blower 2 can be performed from the opening 31 of the casing side plate 11 after removing the lid 72 and the base 71 of the electric component box 7. Inspection of the blower 2, which was difficult when the air conditioner is used in a form in which indoor air is sucked from the back, can be easily performed. Further, if the screws or the like fixing the fan casing 23 to the blower stand 4 are removed, the electric motor 21 and the impeller 22 can be drawn together with the fan casing 23 to the vicinity of the opening 31 and the inspection of the blower 2 can be further improved. It will be easier.

In FIG. 1, the air suction port 1 is provided on the rear surface of the casing 10. However, in this ceiling embedded type air conditioner, the casing bottom plate 14 near the air suction port 1 is removed, and the air suction port 1 is connected. If closed by a casing back plate (not shown), the casing 10 can be used in a form in which an air suction port is formed on the bottom face. And in this case,
As shown in FIG. 5, the electric component box 7 is
1 can be inspected simply by putting a hand through the air inlet and removing the lid 72 of the electric component box 7, and the blower 2 can be easily inspected from the air inlet. Therefore, this ceiling-mounted air conditioner
It can be said that the serviceability is good even when the air suction port is formed on either the back surface or the bottom surface of the casing 10.

In the above description, the ceiling embedded type air conditioner in which the air suction port can be selectively formed on the bottom surface or the back surface of the casing has been described. However, the air suction port is fixedly formed on the back surface of the casing. The present invention is also applicable to an in-ceiling type air conditioner and an in-ceiling type air conditioner in which an air suction port is fixedly formed on a bottom surface of a casing.

Embodiment 2 of the Invention FIG. 6 is a schematic perspective view of a casing side plate according to Embodiment 2 of the present invention. In this embodiment, the opening 31a of the casing side plate 11 is formed in such a size and shape that the fan casing 23 can be inserted through the fan casing 23 in the axial direction and can be extracted. Casing 23
Is larger than the total area of the end faces where the air suction ports 24 are formed. The configuration other than the opening 31a is the same as that of the first embodiment, and the opening 31a is openably and closably closed by the base 72 of the electric component box 7 attached to the outer or inner surface of the casing side plate 11. The same is true. It is to be noted that the fan component having the largest cross section in the direction orthogonal to the axis among the components of the blower 2 is the fan casing 23, and the fact that the opening 31a can extract the fan casing 23 means that the electric motor 21 and the impeller 22 And the like, that is, the whole blower 2 can be extracted in the axial direction.

With the above configuration, when checking the blower 2, the lid 72 and the base 71 of the electric component box 7 are required.
Are removed from the opening 31a, first, one bell mouth 26 and the impeller 22 are taken out, one fan casing 23 is taken out, and then the electric motor 21 is slid together with the electric motor base 41 toward the opening 31a. Then, the other bell mouth 26 and the impeller 22 can be taken out, and finally the other fan casing 23 can be taken out. In this way, all the components of the blower 2 can be taken out sequentially from the one close to the opening 31a. Thereby, inspection of the blower 2 can be performed more easily. In addition, parts of the blower 2 can be replaced from the opening 31a.

In FIG. 6, the opening 31a is considerably large relative to the fan casing 23. However, in order to secure the strength of the casing side plate 11, the opening 31a is made as small as possible, that is, the fan casing 23 can be barely pulled out. It is preferable that the size be as large as possible.
However, in this case, it is preferable that the gap be formed between the outer peripheral surface of the fan casing 23 and the inner peripheral surface of the opening 31a so as to allow passage of electric wiring (not shown) to the electric motor 21.

In this embodiment, the motor 21 is mounted on the motor base 41 via the slidable motor base 41. However, the motor 21 is mounted on the motor base 41 so as not to slide. Even in this case, there is an effect that the blower 2 can be easily inspected by taking out the constituent members of the blower 2 from the opening 31a.

Embodiment 3 of the Invention FIG. 7 is a schematic perspective view of a casing side plate according to Embodiment 3 of the present invention, and FIG. 8 is a longitudinal sectional view showing a fitting state of a protrusion of an electric component box base and an opening of the casing side plate. In this embodiment, the base portion 71 of the electrical component box 7 is stamped (embossed) from the electrical component mounting surface toward the opposite surface, so that the base portion 71 fits into the opening 31 b of the casing side plate 11. Is formed on the base 71. The casing side plate 11 has a tubular portion 32 formed around the opening 31b by burring from the outer surface to the inner surface. The other configuration is the same as that of the first embodiment, including the lid 72 of the electrical component box 7.

With the above-described configuration, when the base 71 closes the opening 31b from the outer surface of the casing side plate 11, the outer peripheral surface of the projection 73 is
2, the strength of the casing side plate 11 whose rigidity has been weakened by forming the opening 31b can be increased. In particular, the opening 31
This is useful when the opening area of b is increased. Also,
Since the airtightness is improved, an effect of eliminating obstacles such as wind leakage is also exerted.

Further, by mounting an electric component in a recess 74 (see FIG. 8) formed on the opposite side of the projecting portion 73 of the base 71, the electric component box 7 can be protruded from the outer surface of the casing side plate 11. The effect of reducing the amount to save space can also be achieved.

The burring of the casing side plate 11 may be omitted. In the above description, the base portion 71 having the protruding portion 73 is attached to the outer surface of the casing side plate 11, but may be attached to the inner surface of the casing side plate 11. Further, the opening and the protruding portion may be symmetrical with respect to one axis of symmetry, so that the base, that is, the electric component box, can be attached to the outer surface or the inner surface of the casing side plate 11.

[0036]

As described above, according to the present invention,
An opening facing the axial end of the blower is formed on at least one of the casing side plates, and the electrical component box is formed from a base portion for mounting electrical components and a lid portion covering the electrical component mounting surface of the base portion. Since the opening of the casing side plate is closed and opened by the base of the electrical component box, the lid can be closed regardless of whether the electrical component box is attached to the outer surface of the casing side plate or to the inner surface of the casing side plate. It is easy to inspect the control board, power supply terminal block, and other electrical components housed in the electrical component box by simply removing it.Inspection of the blower requires air if the air suction port is formed on the bottom of the casing. Of course, the air suction port can be formed from the opening of the casing side plate even when the air suction port is formed on the rear surface of the casing. Thus, the air suction port can be formed on either the rear surface or the bottom surface of the casing. Services can be obtained a good ceiling type air conditioner even when formed.

Further, since the opening of the casing side plate is formed in such a size and shape that the blower can be pulled out in the axial direction, the blower can be pulled out from the opening and inspected. Become.

In addition, since the projecting portion that fits into the opening of the casing side plate is formed on the surface of the electric component box base opposite to the electric component mounting surface, the base closes the opening of the casing side plate. In this state, the outer peripheral surface of the projection engages with the inner peripheral surface of the opening, so that the strength of the casing side plate whose rigidity has been reduced by the formation of the opening can be increased, and the airtightness can be improved. Therefore, there is also an effect that obstacles such as air leakage from the opening are eliminated.

Further, a motor base slidable in a direction orthogonal to the casing side plate is provided on the blower base, and the motor of the blower is mounted on the blower base via the motor base, so that the motor is drawn to the opening of the casing side plate. Inspection can be performed, and when the blower is drawn out from the opening, the electric motor can be slid out together with the electric motor stand, thereby further improving serviceability.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an overall configuration of an embedded ceiling air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is an exploded perspective view showing a blower stand, an electric motor stand, and a blower.

FIG. 3 is a longitudinal sectional view of a fan stand and an electric motor stand.

FIG. 4 is a perspective view showing a state in which the electric component box is mounted on the outer surface of the casing side plate.

FIG. 5 is a perspective view showing a state in which the electric component box is mounted on the inner surface of the casing side plate.

FIG. 6 is a schematic perspective view of a casing side plate according to Embodiment 2 of the present invention.

FIG. 7 is a schematic perspective view of a casing side plate according to Embodiment 3 of the present invention.

FIG. 8 is a longitudinal sectional view showing a fitting state of a protrusion of the electric component box base and an opening of the casing side plate.

FIG. 9 is a perspective view of a conventional ceiling-mounted air conditioner.

FIG. 10 is an exploded perspective view of a conventional ceiling-mounted air conditioner.

11A and 11B are diagrams showing a part of a conventional casing side plate, in which FIG. 11A is a front view and FIG. 11B is a rear view.

FIG. 12 is an exploded perspective view of a conventional electric component box.

FIG. 13 is an explanatory view showing a state in which a conventional electric component box is mounted on an inner surface of a casing side plate.

14 is a perspective view showing the mounted state of FIG. 13 as viewed from obliquely below.

FIG. 15 is an explanatory view showing a state in which a conventional electric component box is mounted on an outer surface of a casing side plate.

FIG. 16 is a perspective view showing the mounted state of FIG. 15 as viewed obliquely from below.

[Explanation of symbols]

Reference Signs List 1 air inlet, 2 blower, 4 blower stand, 5 use side heat exchanger, 6 air outlet, 7 electric box, 10 casing, 11, 12 casing side plate, 21 motor,
31, 31a, 31b opening, 41 motor stand, 42
Collar part, 43 rails, 71 base part, 72 lid part,
73 Projection.

Claims (4)

[Claims] 1. A box-shaped casing having an air inlet and an air outlet and embedded in a ceiling, a blower and a use-side heat exchanger housed in the casing, a control board attached to the casing. And an electric component box that accommodates electric components such as a power supply terminal block, wherein the blower is provided between a pair of casing side plates facing each other of the casing, and the blower base is provided with the casing side plate in the axial direction. The ceiling-embedded air, which is configured to cool or heat indoor air sucked from the air suction port by the blower by the use side heat exchanger and then blow out the air from the air outlet by the blower. In the harmony device, an opening facing an axial end of the blower is formed in at least one of the casing side plates, and the electric component box is A ceiling comprising: a base portion to be attached to; and a lid portion covering an electric component mounting surface of the base portion, wherein an opening of the casing side plate is openably closed by a base portion of the electric component box. Embedded air conditioner. 2. The ceiling-mounted air conditioner according to claim 1, wherein the opening of the casing side plate is formed in a size and a shape capable of extracting the blower in the axial direction. 3. The ceiling mounting according to claim 1, wherein a projection is formed on a surface of the electric component box base opposite to the electric component mounting surface to be fitted with an opening of the casing side plate. Built-in air conditioner. 4. The blower base is provided with a motor base slidable in a direction orthogonal to the casing side plate, and the motor of the blower is attached to the blower base via the motor base. The ceiling-mounted air conditioner according to any one of the above.