JPH0620026Y2 - Ceiling embedded air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a ceiling-embedded air conditioner, and more particularly to a structure of a switch box in a ceiling-embedded air conditioner.

(Problems to be Solved by Conventional Techniques and Inventions) Generally, a ceiling-embedded air conditioner is connected to an air conditioner body having a fan and an air heat exchanger built-in and a lower surface of the air conditioner body. And a switch box equipped with electronic components such as various control boards and terminals is attached to the main body of the air conditioner. In the ceiling-embedded air conditioner having such a structure, it is required to improve workability when performing inspection, maintenance, and the like on the electronic components. However, in this type of ceiling-embedded air conditioner, due to structural restrictions, it is not possible to provide a large distance between the air conditioner body and the decorative panel that is coupled to the lower surface of the air conditioner, and the air conditioner is formed on the ceiling. Conventionally, there has been a problem in that it is extremely difficult to work on the switch box on the air conditioner body side due to the external requirement that the opening be kept as small as possible. Therefore, conventionally, a method of performing work on the switch box or the like with the decorative panel removed (see, for example, Japanese Utility Model Laid-Open No. 58-60121), or inspection with the switch box itself removed from the air conditioner body, etc. The method (see, for example, Japanese Utility Model Laid-Open No. 58-67222) is employed. However, in the above-mentioned conventional method, there is a problem that when performing inspection work or the like on the switch box, it is necessary to attach and detach the decorative panel or the switch box itself each time. In other words, eliminating such a problem has become an important technical issue for improving workability.

The present invention has been made in view of the above points, and makes it possible to easily perform inspection, maintenance, etc. on various electronic components provided in a switch box without removing the decorative panel or the switch box. It is intended.

(Means for Solving the Problem) In the invention of claim 1, as a means for solving the above-mentioned problems, as shown in the drawings, an air conditioner body 1 having a fan 3 and an air heat exchanger 4 built therein. And a decorative panel 2 connected to the lower surface of the air conditioner main body 1, and a switch box 16 including electronic components such as various control boards and terminals is provided on the air conditioner main body 1 side, while In a ceiling-embedded air conditioner in which a decorative window 2 has a service window hole 19 that opens below the switch box 16, a side surface 16a and a bottom surface 16b of the switch box 16 are provided for the first and second services. First and second service lids which respectively form openings 23 and 24 and cover the first and second service openings 23 and 24, respectively. 35 and 36 are detachably provided, and the switch box 16 is provided.
Is formed with a downward inclined surface 16c at a corner between the side surface 16a and the bottom surface 16b, and the first service lid 35 is attachable to and detachable from the inclined surface 16c.
It is fixed by 9. As described in claim 2, a terminal mounting base 26 for mounting terminals and the like is detachably provided in the switch box 16 at a position corresponding to the second service opening 24, and the terminal mounting base is provided. There may be a case where a peep window 27 through which the abnormality detecting element arranged in the switch box 16 can be visually recognized.

Further, in the invention of claim 3, as a means for solving the above problems, as shown in the drawings, an air conditioner body 1 having a fan 3 and an air heat exchanger 4 built therein, and the air conditioner body. 1 and a decorative panel 2 that is joined to the lower surface,
The air conditioner body 1 side is provided with a switch box 16 including various control boards and electronic parts such as terminals, and the decorative panel 2 is provided with a service window hole 19 that opens below the switch box 16. In the ceiling-embedded air conditioner, an initial setting switch 29 for performing initial setting for selecting the operation control method of the air conditioner after completion of electrical work is attached to the bottom surface 16b of the switch box 16. . As described in claim 4, a notch 28 is formed at the edge of the service opening 24 formed on the bottom surface 16b of the switch box 16, and the initial setting switch 29 is attached to the notch 28. In the case of the above, as described in claim 5, when the initial setting switch 29 is housed and fixed in the housing case 30 which is made of an insulating material and whose lower part is opened, the opening of the housing case 30 is carried out as described in claim 6. In some cases, a pair of open side mounting flanges 32, 32 and a pair of bottom surface side mounting flanges 33, 33 may be integrally provided at the side and bottom surface side end portions.

(Operation) According to the first aspect of the invention, the following operation is obtained by the above means.

That is, the downwardly inclined surface 16 formed at the corner between the side surface 16a and the bottom surface 16b of the switch box 16.
1st service lid 35 and switch box bottom surface 1 fixed by fasteners 39, 39 detachable from c
Second service lid 36 that is detachable from 6b
Can be easily removed by the work through the service window hole 19 formed in the decorative panel 2, and inspection, maintenance, etc. of various electronic parts of the switch box 16 can be easily performed. It can be easily done without removing it. As described in claim 2, the second service opening 2 is provided in the switch box 16.
A terminal mounting base 26 for mounting terminals and the like is detachably provided at a position corresponding to 4, and an abnormality detecting element disposed in the switch box 16 can be visually recognized on the terminal mounting base 26. If the observation window 27 is formed, inspection and maintenance of the terminals and the like provided on the terminal mount 26 and visual confirmation of the abnormality detection element arranged in the switch box 16 can be performed for removing the second service lid 36. It can be done only by itself.

Further, in the device of the third aspect, the following effects can be obtained by the above means.

That is, by providing the initial setting switch 29 on the bottom surface 16b of the switch box 16, the initial setting work for the initial setting switch 29 (that is, the electrical work is completed by the work from the service window hole 19 formed in the decorative panel 2). The work of setting the operation control method of the air conditioner later) can be easily performed. In addition, as described in claim 4, the bottom surface 16 b of the switch box 16
A notch 28 is formed at the rim of the service opening 24 formed in the above, and the initial setting switch 2 is formed in the notch 28.
If 9 is attached, a simple mounting structure of the initial setting switch 29 using the service opening 24 can be obtained. Further, as described in claim 5, if the initial setting switch 29 is housed and fixed in a housing case 30 which is made of an insulating material and whose lower part is opened, a single component in a state where the initial setting switch 29 is housed in the housing case 30. As a result, it becomes possible to handle the above, and the degree of freedom in designing the mounting structure is expanded. Further, as described in claim 6, a pair of open side and bottom side mounting flanges 32, 32 and 33, 3 are provided at the open side and bottom side end portions of the storage case 30.
If 3 is integrally projected, the mounting position of the storage case 30 can be freely selected depending on which of the mounting flanges 32, 32 or 33, 33 is used, and the degree of freedom in design is further improved. It becomes.

(Effect of the Invention) According to the invention of claim 1, from the air conditioner main body 1 having the fan 3 and the air heat exchanger 4 built therein, and the decorative panel 2 coupled to the lower surface of the air conditioner main body 1. On the air conditioner main body 1 side, a switch box 16 provided with various control boards and electronic parts such as terminals is provided, while on the decorative panel 2, a service window hole 19 opened below the switch box 16 is provided. In the formed ceiling-embedded air conditioner, first and second service openings 23 and 24 are formed on the side surface 16a and the bottom surface 16b of the switch box 16, respectively, and the first and second service openings are formed. 23 and 24 are provided with first and second service lids 35 and 36 that cover them, respectively, in a removable manner, and the switch box 16 is provided with A downwardly inclined surface 16c is formed at a corner between the side surface 16a and the bottom surface 16b, and the first service lid 35 is attachable to and detachable from the inclined surface 16c.
Since it is fixed by, the first and second service lids 3
Since 5 and 36 can be easily removed by the work from the service window hole 19 formed in the decorative panel 2, when inspecting and maintaining various electronic components of the switch box 16, There is no need to remove the decorative panel 2 or the switch box 16 itself, and there is a practical effect that service workability is significantly improved.

Incidentally, as described in claim 2, the switch box 16
A terminal mounting base 26 for mounting terminals and the like is detachably provided at a position corresponding to the second service opening 24 in the switch box 16, and the terminal mounting base 26 is disposed in the switch box 16. By forming the viewing window 27 through which the abnormality detecting element can be visually recognized, inspection and maintenance of the terminals and the like provided on the terminal mount 26 and visual confirmation of the abnormality detecting element arranged in the switch box 16 can be made easier. (2) The service can be performed only by removing the service lid 36, and by removing the terminal mount 26, it is possible to easily replace the electronic components arranged inside the switch box 16.

According to the third aspect of the invention, the air conditioner body 1 has the fan 3 and the air heat exchanger 4 built therein, and the decorative panel 2 is coupled to the lower surface of the air conditioner body 1.
The air conditioner body 1 side is provided with a switch box 16 including various control boards and electronic parts such as terminals, and the decorative panel 2 is provided with a service window hole 19 that opens below the switch box 16. In the embedded ceiling type air conditioner, an initial setting switch 29 for performing initial setting for selecting the operation control method of the air conditioner after completion of electrical work is attached to the bottom surface 16b of the switch box 16, By the work through the service window hole 19 formed in the decorative panel 2, it becomes possible to easily perform the initial setting work for the initial setting switch (the work for setting either the group control or the centralized control) after the electrical work is completed. There is a practical effect that.

Incidentally, as described in claim 4, the switch box 16
If a notch 28 is formed at the rim of the service opening 24 formed on the bottom surface 16b, and the initial setting switch 29 is attached to the notch 28, the service opening 24 can be easily used. The effect that the mounting structure of the initial setting switch 29 is obtained is obtained.

Further, as described in claim 5, the initial setting switch 29
Is a storage case 30 that is made of an insulating material and has an open bottom.
If it is housed and fixed, the initial setting switch 29 can be handled as a single part housed in the housing case 30, and the degree of freedom in designing the mounting structure can be increased.

Further, as described in claim 6, if a pair of open side and bottom surface mounting flanges 32, 32 and 33, 33 are integrally provided at the open side and bottom side end portions of the storage case 30, the mounting case 30 is mounted. Flange 32, 32 and 33, 33
It is possible to freely select the mounting position of the storage case 30 depending on which one is used, and it is possible to obtain the effect of further improving the degree of freedom in design.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

The ceiling-embedded air conditioner of this embodiment is shown in FIGS.
As shown in the figure, an air conditioner main body 1 having a fan 3, an air heat exchanger 4 and an auxiliary heater 5 is connected to the lower surface of the air conditioner main body 1, and an air suction port 6 is sandwiched between both sides. It is composed of a decorative panel 2 having air outlets 7 and 8. The air conditioner main body 1 is hung above a ceiling C by a hanging bolt (not shown), and is formed on the ceiling C by the decorative panel 2. It is installed so as to close the opened opening. The fan 3 is of a triple type in which three centrifugal fans 3a, 3a, 3a are connected via a common rotating shaft 9. Reference numeral 10 is a fan motor.

On the air conditioner main body 1 side, there are suction air passages 11, 11 ... Which extend from the air suction port 6 on the decorative panel 2 side to the fan 3 (substantially, centrifugal fans 3a, 3a, 3a). Has been formed.

Further, the decorative panel 2 is provided on the air conditioner body 1 side.
First outlet air passage 12 leading to one of the air outlets 7 on the side
And a distribution duct 1 formed inside the air suction port 6
A second outlet air passage 13 communicating with the other air outlet 8 on the side of the decorative panel 2 via 4, 14, 14 is formed, and is discharged from the fan 3 and heated or cooled by the air heat exchanger 4. The conditioned air thus distributed is distributed to both air outlets 7 and 8 at a predetermined ratio through the first and second outlet air passages 12 and 13. Reference numeral 15 is a drain pan.

Then, on one side of the air conditioner body 1, a switch box 16 including electronic components such as various control boards 17 and various terminals 18 is attached (see FIGS. 1 and 2). reference).

On the other hand, a service window hole 19 is formed at a position corresponding to the switch box 16 on the decorative panel 2, and the service window hole 19 is a lid body that is detachable from the decorative panel 2. It is covered by 20. The lid 20 can cover a part of the screws 21, 21 ... As a connecting means for connecting the air conditioner body 1 and the decorative panel 2 when fixed to the decorative panel 2. Is configured. With this configuration, the lid 20 must be removed before removing the decorative panel 2.
Therefore, it has to be removed (see FIG. 2).

As shown in FIG. 1, the switch box 16 is fixed to the outer plate 22 on the side surface of the air conditioner body 1, and the corners between the side surface 16a and the bottom surface 16b are A downward inclined surface 16c is formed.
The side surface 16a and the bottom surface 16b are respectively formed with first and second service openings 23 and 24, and both service openings 23 and 24 are formed into the inclined surface 16c.
It is in a continuous state through the opening 25 formed in.
In addition, the various control boards 17 are disposed in the switch box 16 and the switch box 1
A terminal mount 2 for fixing the various terminals 18 at a position corresponding to the second service opening 24 in the terminal 6.
6 is detachably attached (see FIG. 3). Further, the terminal mount 26 is formed with a peep window 27 through which the abnormality detecting element of the control board 17 arranged in the switch box 16 can be visually recognized from below. That is,
By removing the terminal mounting base 26, the control board 17 and the like arranged in the switch box 16 can be replaced, and the terminal mounting base 26 can be used when visually recognizing the abnormality detecting element of the control board 17. The structure does not need to be removed. Further, a cutout portion 28 is formed at the rim of the second service opening 24, and the cutout portion 28 has an initial setting for selecting the operation control method of the air conditioner after completion of electrical work. An initial setting switch 29 for performing (setting for either group control or centralized control) is attached (see FIG. 3).

The initial setting switch 29 is accommodated and fixed in the storage case 30 shown in FIGS.
Is attached to. The storage case 30 is made of an electrical insulator and has a rectangular box shape with an open top.
Inside thereof, a pair of claw pieces 31, 31 for forcibly fitting and fixing the initial setting switch 29 is formed.
At the open side and the bottom side end of the storage case 30, a pair of mounting flanges 32, 32 and 33,
33 is projected integrally. And in this embodiment,
The switch box 1 of the storage case 30 is obtained by fixing the open side mounting flanges 32, 32 of the storage case 30 to the rim of the cutout portion 28 with screws 34, 34.
6 is being installed. In addition, using the bottom surface side mounting flanges 33, 33 of the storage case 30, the storage case 3
When mounting 0, the initial setting switch 29 can be mounted on the flat plate member.

Thus, the first and second service openings 23, 2
4 is removable first and second service lids 35, 3
Each of them is covered by 6.

On the upper and lower ends of the first service lid 35, hooking pieces 37, 37 that are locked to the upper end surface of the switch box 16,
The mounting pieces 38 to be mounted on the inclined surface 16c of the switch box 16 are integrally projected. That is, in the first service lid 35, after the locking pieces 37, 37 are locked to the upper end surface of the switch box 16, the mounting piece 38 is attached to the inclined surface 1 of the switch box 16.
It is attached to the switch box 16 by fixing it to the 6c with screws 39, 39 acting as a fastener. Therefore, the first service lid 35 can be easily removed by screwing off the screws 39, 39 from below.

On the other hand, a square hole 40 formed in the bottom surface 16b of the switch box 16 is provided at one end of the second service lid 36.
An engaging piece 41 that is engaged with is integrally projected. That is, the second service lid 36 has the engagement piece 41 with the square hole 40 formed in the bottom surface 16 b of the switch box 16.
After being engaged with the switch box 16, the opposite side of the engagement is fixed to the bottom surface 16b of the switch box 16 with a screw 42 so that the switch box 16 can be mounted. Therefore, this second service lid 36
Also, it is to be easily removed by screwing off the screw 42 from below.

In the drawings, reference numeral 43 is a lead wire from an electronic component arranged in the switch box 16, 44 is a notch for leading out the lead wire 43, and 45 is swingably provided at the air outlets 7 and 8. The blowing blades, 46 is a drive motor that serves as a drive source for swinging the blowing blades 45, and 47 is the driving motor 4
6 is a drive mechanism for connecting the blow-off blades 46, 48 is a radiation sensor for detecting the indoor temperature, 49 is an air filter, 50 is a suction grille, 51 is a screw for fixing the lid 20, and 52 is the above-mentioned. Drive motor 46 and drive mechanism 47
It is a cover that covers.

With the above configuration, in the present embodiment, the first service lid 35 that covers the first service opening 23 formed on the side surface 16a of the switch box 16 and the first service lid 35 formed on the bottom surface 16b of the switch box 16 are provided. The second service lid 36 that covers the second service opening 24 can be easily removed by the work from the service window hole 19 formed in the decorative panel 2, and various electronic components of the switch box 16 are provided. The inspection, maintenance, etc. can be easily performed without removing the decorative panel 2 or the switch box 16 itself. It should be noted that inspection and maintenance of the terminals and the like provided on the terminal mounting base 26 and visual confirmation of the abnormality detection element arranged in the switch box 16 can be performed only by removing the second service lid 36. .

In addition, the notch 2 formed at the edge of the second service opening 24 formed on the bottom surface 16b of the switch box 16.
Since the initial setting switch 29 is attached to the window 8, the service window hole 1 formed in the decorative panel 2
By the work from 9, the initial setting work for the initial setting switch 29 (that is, the work of setting whether the operation control of the air conditioner is the centralized control or the group control) after the electric work is easily performed. It will be.

The present invention is not limited to the configuration of the above-mentioned embodiment, and it goes without saying that the design can be appropriately changed without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a switch box portion of an air conditioner main body in a ceiling-embedded air conditioner according to an embodiment of the present invention is disassembled, and FIG. 2 is a ceiling-embedded air conditioner according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of the air conditioner, FIG. 3 is a bottom view showing a state where the second service lid of the switch box in the ceiling-embedded air conditioner according to the embodiment of the present invention is removed, and FIG. 4 is the present invention. FIG. 5 is a plan view of an initial setting switch storage case in the ceiling embedded air conditioner according to the embodiment of the present invention, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is VI-VI of FIG.
FIG. 7 is a cross-sectional view, FIG. 7 is an enlarged exploded perspective view showing the interior of a ceiling-embedded air conditioner according to an embodiment of the present invention, and FIG. 8 is a ceiling-embedded air conditioner according to an embodiment of the present invention. FIG. 1 ... Air conditioner main body 2 ... Decorative panel 3 ... Fan 4 ... Air heat exchanger 16 ... Switch box 16a ... Side 16b ... Bottom 16c ... Inclined surface 19 ... Service window 23 ... Opening for the first service 24 Opening for the second service 26 Terminal mounting base 27 Viewing window 28 Notch 29 Initial setting switch 30 Storage case 32, 33 Mounting flange 35 ...... First service lid 36 ...... Second service lid 39 ...... Stoppers (screws)

Claims (6)

[Scope of utility model registration request] 1. An air conditioner main body (1) having a fan (3) and an air heat exchanger (4) built-in, and a decorative panel (2) coupled to a lower surface of the air conditioner main body (1). On the side of the air conditioner main body (1), a switch box (16) equipped with various control boards and electronic parts such as terminals is provided, while the decorative panel (2) is below the switch box (16). In a ceiling-embedded air conditioner in which a service window hole (19) that opens in the above is formed, the first and second service openings are provided on the side surface (16a) and the bottom surface (16b) of the switch box (16). First and second service lids (35), (36) which respectively form (23), (24) and cover these first and second service openings (23), (24), respectively. ) Is detachably provided and the switch box (16) has a downward inclination at the corner between the side surface (16a) and the bottom surface (16b). Forming a surface (16c) and defining the first surface with respect to the inclined surface (16c).
A ceiling-embedded air conditioner in which a service lid (35) is fixed by removable fasteners (39), (39). 2. A terminal mount (26) for mounting the terminals and the like is detachably provided at a position corresponding to the second service opening (24) in the switch box (16), The ceiling according to claim 1, wherein the terminal mount (26) is formed with a peep window (27) through which an abnormality detection element disposed in the switch box (16) can be visually recognized. Embedded air conditioner. 3. An air conditioner main body (1) having a fan (3) and an air heat exchanger (4) built-in, and a decorative panel (2) coupled to the lower surface of the air conditioner main body (1). On the side of the air conditioner main body (1), a switch box (16) equipped with various control boards and electronic parts such as terminals is provided, while the decorative panel (2) is below the switch box (16). In a ceiling-embedded air conditioner in which a service window hole (19) opening at is formed, a bottom surface of the switch box (16)
(16b) is an embedded ceiling type air conditioner characterized by being provided with an initial setting switch (29) for performing initial setting for selecting the operation control method of the air conditioner after completion of electrical work. 4. A cutout portion (28) is formed at a rim of a service opening (24) formed in a bottom surface (16b) of the switch box (16), and the initial portion is formed in the cutout portion (28). Setting switch (29)
The ceiling-embedded air conditioner according to claim 3, further comprising: 5. The ceiling-embedded ceiling according to claim 3, wherein the initial setting switch (29) is housed and fixed in a housing case (30) made of an electric insulator and having an open lower surface. Type air conditioner. 6. A pair of open side mounting flanges (32), (32) and bottom side mounting flanges (33), (33) are provided at the open side and bottom side end portions of the storage case (30). The ceiling-embedded air conditioner according to claim 5, wherein the air conditioner is integrally provided so as to project.