JP3335794B2 - Air conditioner fan unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan unit for an air conditioner.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS.
The fan case 200 is arranged in the fan unit case 100, and the electric motor 300 is installed in the fan case 200.
And a fan that is driven to rotate in conjunction with the motor 300
There is a fan unit X of an air conditioner provided with 400.

[0003] Such a fan unit X is provided with an anti-vibration structure, which generally includes a fan case.
A vibration isolator 500 is interposed between the lower surface of the fan unit 200 and the bottom wall 110 of the fan unit case 100, and the fan case 20
A flexible joint 600 is provided between the upper end of the fan unit 100 and the ceiling wall 120 of the fan unit case 100.

[0004]

However, the above-described fan unit X has the following problems.

[0005] In other words, the market demands a compact air conditioner of the same performance. However, the above-described flexible joint 600 and vibration isolator 500 are provided at the upper and lower ends of a fan case.
Is provided, a large space is required above and below the fan unit X.

Therefore, there is a problem that the fan unit case 100 for housing the fan unit X becomes large.

Further, since a sirocco fan is generally used as the fan 400, it is difficult to reduce the thickness of the fan unit case 100 with a sirocco fan having a large blade width.

Accordingly, an object of the present invention is to provide a fan unit of an air conditioner which can solve the above-mentioned problems.

[0009]

According to the present invention, a fan case is provided in a fan unit case, and an electric motor and a turbo fan interlockingly connected to the motor are provided in the fan case. A recess is formed in the lower left and right corners of the case, and the lower part of the fan case is supported by the fan unit case via a vibration isolator provided in the recess,
Further, the present invention relates to a fan unit of an air conditioner, wherein an upper end of the fan case is supported by a fan unit case via a sponge-like cushioning material.

[0010]

A concave portion is formed at the lower left and right corners of the fan case provided in the fan unit case, and the lower portion of the fan case is supported by the fan unit case via a vibration isolator provided in the concave portion. By supporting the upper end of the fan case to the fan unit case via a sponge-shaped cushioning material, the fan case can be arranged in a suspended state in a small space, and the height direction can be made compact. It becomes possible to plan.

Further, it is possible to make the fan case compact in the width direction of the fan case as a turbo fan having a small blade width.

With this configuration, the size of the fan unit case for housing the fan unit can be reduced, and the size of the entire air conditioner can be reduced.

[0013]

FIG. 1 is a front view of an air conditioner having a fan unit according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an explanatory view showing the internal structure thereof. The unit case 1, the fan unit case 2, and the coil unit case 3 are stacked.

Each of the unit cases 1, 2, 3 is formed in a thin box shape having a detachable front panel 1a, 2a, 3a, respectively, and as shown in FIG. The filter unit 10, the fan unit 20, and the coil unit 30 are housed and arranged.

In the air conditioner A according to this embodiment, as shown in FIG. 1, the interior of the fan unit case 2 is partitioned by a flow path partitioning wall 21 to form two fan unit installation spaces S. The fan units 20 are arranged side by side in S.
The number of fan units 20 is not limited to two. For example, a plurality of fan unit installation spaces S may be formed in three or four rooms, and the fan units 20 may be provided in each of them.

In FIG. 1, reference numerals 12 and 22 denote inspection doors, and the inspection doors 12 and 22 are provided with an electrical component b on the back surface.

In addition, communication ports are formed on the upper surface of the filter unit case 1, the upper and lower surfaces of the fan unit case 2 and the coil unit case 3, respectively, and communicate with each other in a stacked state.

Further, the unit cases 1, 2,
A vertically long suction case 4 is erected so as to be in contact with one side surface of the filter unit case 1, and the air supply port 41 of the suction case 4 is connected to the suction port 11 formed on one side surface of the filter unit case 1. . Reference numeral 42 denotes an inlet of the suction case 4.

Each of the unit cases 1, 2, 3 is provided with a locking means a provided on each of these side surfaces and having a positioning function.
And the unit case
Angle supports 5,5 are erected so as to contact the left and right corners of 1,2,3, and the angle supports 5,5 and each unit case 1,2,3
3 is removably connected to a bolt 6 with a knob.

That is, as shown in FIG.
Is composed of a toggle-type connecting tool 91 and a plug-in type positioning tool 92.
The connector body 91a and the positioning fitting piece 92a are provided at the lower ends of the left and right side surfaces of the fan unit case 2 and the coil unit case 3, respectively.
A connecting hook 91b and a fitting-in receiving portion 92b corresponding to the fitting 92a are arranged in parallel.

As shown in FIG. 1, an installation member 13 is provided on the bottom surface of the filter unit case 1, and the filter unit case 1 is mounted on the floor of the installation place via bolts or the like via the installation member 13. It is fixed with.

When the air conditioner A is installed according to the above configuration, the positioning fitting piece 92 of the unit case 1 is placed on the filter unit case 1 fixed at a predetermined installation place.
The fan unit case 2 is placed in a state in which a is securely fitted into the fitting piece receiving portion 92b of the fan unit case 2 and fastened by the connector 91 as shown in FIG. This fastening operation can be performed with one touch.

Further, the coil unit case 3 is placed and connected on the fan unit case 2 in the manner described above, and the unit cases 1, 2, and 3 are held together.

Thereafter, angle supports 5, 5 are brought into contact with the left and right corners on the back side of each unit case 1, 2, 3, and each unit case 1, 2, 3 and angle support 5, 5 are bolted with a knob 6.
And fix. The unit case 1,2,3 and the angle support 5,5 must have bolt holes corresponding to each other beforehand.
60 are drilled.

Then, the angle supports 5, 5 are fixed to the wall surface or the ceiling surface with fixing bolts or the like, and the assembly and installation of the air conditioner A is completed.

As described above, when the unit cases 1, 2, and 3 are stacked, positioning is easy, and the operation of the connector 91 can be performed with one touch. Since the fixing to the columns 5, 5 can be performed manually, no tools are required, and the assembling and installation can be performed very easily without any trouble. Therefore, the work efficiency is improved, and the labor burden on the worker can be significantly reduced.

It is needless to say that the air conditioner A can be easily disassembled by performing the steps reverse to the above operations.

In this embodiment, the unit cases 1, 2,
3 are formed on the upper and lower peripheral edges of the unit case 1, and at least the front seal surfaces 71 of the unit cases 1, 2, 3 are projected outside the unit cases 1, 2, 3 at the same time. And the front panel between the sealing surfaces 71
1a, 2a, 3a are detachably mounted.

That is, as described above, the insides of the unit cases 1, 2, and 3 communicate with each other to form an air flow path, but it is necessary to seal so that air does not leak from the stacked gaps. There is.

Therefore, as shown in FIG. 4, seal portions 7 for connecting the unit cases 1, 2, and 3 are formed on the upper and lower peripheral edges of the unit cases 1, 2, and 3, respectively.

The seal portion 7 is provided in each of the unit cases 1, 2, 3
At the upper and lower front edges of the angled seal member 70 is attached, and a surface bent outside the seal member 70,
The curved surfaces obtained by bending the upper and lower ends of the rear wall and the right and left side walls inward are used as sealing surfaces 71 for connection of the unit cases 1, 2, and 3, and packing is provided on the upper sealing surfaces 71 of the filter unit case 1 and the fan unit case 2. 8 is attached.

As shown in FIG. 6, a heat insulating material 72 is attached to the inner surfaces of the unit cases 1, 2, and 3, and the inner surfaces of the detachable front panels 1a, 2a, and 3a are similarly formed. Insulation
72 is attached and fitted between the upper and lower seal part constituting members 70 described above.

Therefore, the inner surfaces of the unit cases 1, 2, and 3 forming the air flow path are flat, and the flow path resistance can be reduced as much as possible.

In particular, since the sealing surface 71 of the sealing member 70 protrudes outward instead of inward, the inner surfaces of the unit cases 1, 2, and 3 are entirely flat.

Since the front panels 1a, 2a, and 3a are located between the upper and lower seal components 70, the protrusion of the seal component 70 to the outside of the sealing surface 71 is inconspicuous, and the appearance is reduced. It does not detract from aesthetics in terms of design.

In this embodiment, since the front panel 1a of the filter unit case 1 can be attached and detached by a one-touch operation with a fitting type fitting, maintenance and the like are easy.

In the air conditioner A having the above configuration, the gist of the present invention is that a fan case 23 is provided in the fan unit case 2 and the electric motor M is provided in the fan case 23.
A turbo fan F interlockingly connected to the motor M is provided, and a recess is formed in the lower left and right corners of the fan case 23, and a lower portion of the fan case 23 is provided via a vibration isolator 28 provided in the recess. Is supported by the fan unit case 2, and the upper end of the fan case 23 is supported by the fan unit case 2 via a sponge-like cushioning material.

That is, as shown in FIGS. 7 to 9, the fan unit 20 has a fan case 23 disposed inside the fan unit case 2, and the electric motor M and the motor M A turbo fan F, which is rotationally driven in conjunction with the drive shaft M1, is provided. Note that the turbo fan F in this embodiment rotates counterclockwise.

The turbo fan F is thinner than a sirocco fan generally used in air conditioners when compared at the same air volume, so that the fan unit case 2 itself can be formed thin.

Therefore, the filter unit case 1
In addition, by making the coil unit case 3 similarly thin, the air conditioner A can be made extremely thin.

The fan case 23 in which the turbo fan F and the electric motor M are housed is provided with a vibration proof structure.

That is, a vibration isolator 28 is interposed between the lower portion of the fan case 23 and the bottom wall 2b of the fan unit case 2 to support the fan case 23,
The upper end of 23 is connected and supported on the ceiling side of the fan unit case 2 via a sponge-like packing 29 as a cushioning material.

As shown in FIG. 7, the fan case 23 has a triangular concave portion as viewed from the front by dropping the lower left and right corners, and the concave portion is used as a vibration isolator installation space Q. A vibration isolator 28 is provided in the space Q.

The bracket 33 is attached to the wall of the fan case 23 which forms the upper side of the vibration isolator installation space Q so as to project into the vibration isolator installation space Q.
The support shaft 28a erected on the bottom wall 2b of the fan unit case 2
And a spring 28b is interposed between the bracket 33 and the bottom wall 2b.

Therefore, the fan case 23 is connected to the vibration isolator 28
The weight is supported by the spring 28b.

Since a sponge-like packing 29 which does not require a thickness especially in the height direction is provided at the upper end of the fan case 23, a vibration isolator 28 is provided on the bottom surface of the fan case 23, The height in the vertical direction can be greatly reduced as compared with a generally adopted normal vibration isolating structure in which flexible couplings are connected.

As described above, the fan case 23 is provided with the vibration isolator installation space Q
And a thin sponge-like packing 29
, And is suspended in a relatively small space, so that the transmission of vibration can be sufficiently suppressed even if the fan unit case 2 is downsized.

Further, as described above, the turbo fan F
In addition to the fact that the fan case unit 2 is made thinner by adopting the above, the size can be reduced in the height direction and the front-rear direction, and the entire air conditioner A can be reduced in size.

Another configuration of the fan unit 20 in this embodiment will be described.

An intake passage R is formed in front of the fan case 23, and a fan intake port F1 is formed in the front of the fan case 23 so as to face the intake passage R. The air flows in from the fan inlet F1 and is forcibly sent from above the fan unit 20 (see FIGS. 8 and 10).

The electric motor M is supported by a motor mounting plate 24 mounted on the front of the fan case 23 so as to divide the intake passage R. 24c is a mounting bolt for mounting the motor mounting plate 24 to the fan case 23.

That is, as shown in FIG. 9, the motor mounting plate 24 is formed by cutting out the upper left side and the lower right side of the mounting plate body made of a sheet metal having a U-shaped cross section, and leaving the remaining lower left side and upper right side. The surface is formed as left and right ears 24a, 24b for motor attachment, and the electric motor M is supported by the left and right ears 24a, 24b so as to sandwich the electric motor M from left and right. M2 is a motor mounting bolt.

The motor mounting left and right ear portions 24a and 24b serve as flow passage partition walls of the intake passage R and also perpendicular to the fan intake port F1 (FIG. 8). reference).

As shown in FIG. 10, the left ear 24a extends downward from the left side of the electric motor M, and the right ear 24b extends upward from the right side of the electric motor M.

Therefore, the intake passage R is divided into a left passage 25 and a right passage 26. In the lower region of the electric motor M, the left passage 25 is narrow by the width of the electric motor M, Road
26 is wider.

With this configuration, air from below enters the fan inlet F1 through the two flow paths.

As described above, when the turbo fan F is rotating counterclockwise, the intake passage R is divided into a narrow left passage 25 and a wide right passage 26 below the electric motor M as described above. It has been experimentally confirmed that such a configuration improves the intake efficiency of the turbo fan F.

With such a structure, a desired air volume can be obtained even when the fan unit case 2 is made thinner by using the turbo fan F thinner than the sirocco fan as described above.

In this embodiment, the left ear 24 of the motor
A filter holder 27 is provided on the front panel 1a of the filter unit case 1 along an imaginary vertical line extending downward from the lower end of a.

That is, as shown in FIG. 3, in the filter unit case 1 formed thin, the filter unit 10 is disposed in a rearward inclined state so that dust can be collected efficiently. A filter holder 27 is provided for stability.

The position of the filter holder 27 is determined by the flow path partition wall 21 that partitions the inside of the fan unit case 2.
May be a position along a virtual perpendicular line extending downward from the lower end of the.

[0062]

According to the present invention, a fan case is provided in a fan unit case, and an electric motor and a turbo fan interlockingly connected to the motor are provided in the fan case. A recess is formed, the lower part of the fan case is supported by the fan unit case via a vibration isolator provided in the recess, and the upper end of the fan case is supported by the fan unit case via a sponge-like cushioning material. By doing so, the fan unit case can be made compact in the height direction and the front-back direction while sufficiently suppressing the transmission of vibration, and the entire air conditioner can be downsized.

[Brief description of the drawings]

FIG. 1 is a front view of an air conditioner having a unit assembly structure according to the present invention.

FIG. 2 is a side view of the air conditioner.

FIG. 3 is an explanatory view showing the internal structure.

FIG. 4 is an explanatory view showing a unit assembly structure.

FIG. 5 is an explanatory view of a connector.

FIG. 6 is an explanatory diagram of a sealing surface.

FIG. 7 is an explanatory diagram of the fan unit as viewed from the front.

FIG. 8 is an explanatory view as viewed from the side.

FIG. 9 is an explanatory diagram of a motor mounting plate.

FIG. 10 is an explanatory diagram showing an intake passage.

FIG. 11 is an explanatory view of a conventional fan unit as viewed from the front.

FIG. 12 is a side view of a conventional fan unit.

[Explanation of symbols]

 A Air conditioner F Turbo fan M Electric motor 2 Fan unit case 20 Fan unit 23 Fan case 28 Anti-vibration device 29 Sponge packing

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 321 F24F 1/00 306 F04D 29/62 F

Claims (1)

(57) [Claims] A fan case (23) is disposed in a fan unit case (2), and an electric motor is provided in the fan case (23).
(M) and a turbo fan (F) linked to the motor (M)
And a recess is formed at the lower left and right corners of the fan case (23), and the lower part of the fan case (23) is connected to the fan unit case via a vibration isolator (28) provided in the recess.
(2), and the upper end of the fan case (23)
Fan unit case (2) via sponge-like cushioning material
A fan unit for an air conditioner, wherein the fan unit is supported.