JPH08261492A - Blower vibration insulating structure for air conditioner - Google Patents

Abstract

PURPOSE: To provide an excellent maintainability and vibration insulating effect and to decrease the using components. CONSTITUTION: A blower vibration insulating structure mounts a blower 6 for supplying the air conditioned by an air conditioner from a discharge duct 5 to the exterior in the casing 1 of the conditioner, mounts the casing 8 of the blower in a common trestle 9, couples the one end of the long shaft output shaft 12 of a motor 7 directly to an impeller 11 in the casing 8 with a cantilever structure, mounts the motor 7 at the trestle 9 via a vibration insulating material 13, and fixes the trestle 9 for installing the blower 6 and the motor 7 at a mounting plate 21 in the casing 1 opposed to the duct 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower vibration isolation structure for isolating a blower when installing the blower in a casing of an air conditioner.

[0002]

2. Description of the Related Art A blower 6 for drawing air into a filter, a hot / cold water coil, and a humidifier arranged in a casing 1 of an air conditioner to blow air from a discharge duct 5 to the outside after air conditioning has been conventionally shown in FIGS. Casing 1 as shown in FIG.
It was installed inside.

In these figures, the electric motor 7 and the blower 6 are directly connected to each other and mounted on the common mount 9. The common base 9 includes a vibration isolator 30 arranged at four corners of a mounting plate 21 provided inside the air conditioner casing 1 and a flexible duct joint 3 made of canvas cloth shown in FIG.
The bolts 32 and the nuts 33 are fastened to each other at four points and attached. The reference numeral 31a in FIG. 8 indicates a bolt hole.

The air discharged from the blower 6 is blown to the outside by a discharge duct 5 supported by a flange 5a on the outer surface of the casing 1.

[0005]

By the way, in such a conventional mounting structure, as shown in FIG.
Since a gap S is generated between the attachment plate 21 and the mounting plate 21, the air discharged from the blower 6 is sucked into the blower 6 again through the gap S as shown in FIG. 9 when the flexible duct joint 31 is not used. The problem occurs. In order to prevent this, the flexible duct joint 31 that closes the gap S has been conventionally used.

However, when the flexible duct joint 31 is used, for maintenance, it is necessary to remove the vibration isolator 30 and the flexible duct joint 31 and then pull out the blower 6 and the electric motor 7 integrally as shown in FIG. There was a problem that the workability was very poor.

There is also a problem that the number of parts is increased by using the flexible duct joint 31. Further, in the conventional mounting structure, there is a problem that the vibration isolation area becomes large and the vibration isolation effect is difficult to be obtained because it is necessary to isolate the entire common mount 9 to which the blower 6 and the electric motor 7 are attached.

The present invention has been proposed in order to solve the problems of the prior art, and has good maintainability, excellent vibration damping effect, and reduced parts used. An object is to provide a blower vibration isolation structure for a blower.

[0009]

In order to achieve this object, the present invention provides a blower vibration isolation structure for mounting a blower for blowing air conditioned by an air conditioner from a discharge duct to the outside in an air conditioner casing. That is, the blower casing is attached to the common mount, and one end of the long-axis output shaft of the electric motor is directly connected to the impeller inside the blower casing in a cantilever structure, and the electric motor is attached to the common mount via a vibration isolator,
A common mount, on which a blower and an electric motor are installed, is fixed to a mounting plate in the air conditioner casing facing the discharge duct.

[0010]

According to the above-mentioned structure, the portion to which the vibration-proof material is applied only needs to be the motor mounting portion, and the vibration-proof target area can be narrowed, so that the vibration-proof effect is easily obtained. Further, since it is not necessary to apply a vibration isolator to the common mount, a flexible duct joint for preventing re-intake of discharge air from the blower becomes unnecessary.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a front view of an air conditioner to which the present invention is applied. In this figure, inside a casing 1 of an air conditioner, a filter 2, a cold / hot water coil 3, a vaporization type humidifier 4 are provided.
Is arranged. These filters 2, hot and cold water coils 3,
A blower 6 and an electric motor 7 for blowing the air-conditioned air that has passed through the vaporization type humidifier 4 from the discharge duct 5 to the outside are attached to the upper portion of the casing 1.

FIG. 2 shows a mounting structure of the blower 6 and the electric motor 7 inside the casing 1. In this figure, blower 6
The casing 8 is fixedly installed at the position of the outlet 10 on the lower surface of the common mount 9, and the impeller 11 of the blower 6 and both rotating bodies of the electric motor 7 are integrated so that the casing of the blower casing 8 is not interposed. One end of the long shaft output shaft 12 of the electric motor 7 is directly connected to the impeller 11 in the blower casing 8 by a cantilever structure. The electric motor 7 is attached to the lower surface of the common mount 9 via a vibration isolator 13.

Next, a mounting structure for supporting the electric motor 7 on the common mount 9 will be described with reference to FIGS. 3 and 4.
On the lower surface of the common mount 9, L-shaped mounting plates 14 and 15 that support the electric motor 7 are fixedly installed in the left and right directions. The fixed base 16 integrally fixed to the electric motor 7 includes an upper plate portion 16a, which sandwiches the mounting plates 14 and 15 from both sides.
16b is bent at a right angle, and the vibration isolator 13 is sandwiched between the upper plate portion 16a on one side and the mounting surface 14a of the mounting plate 14, and two bolts 17 are provided between the upper plate portion 16a and the mounting plate 14. It is fixed with a nut 18.

Further, the vibration isolator 13 is sandwiched between the upper plate portion 16b on the other side of the fixed base 16 and the mounting surface 15a of the mounting plate 15, and two bolts are provided between the upper plate portion 16b and the mounting plate 15. It is fixed by 19 and a nut 20. In this way, the fixed base 16 integral with the electric motor 7 is attached to the mounting plates 14 and 15 fixed to the lower surface of the common base 9 via the vibration isolator 13.

The common frame 9 on which the blower 6 and the electric motor 7 are mounted is mounted on the left and right mounting plates 21, 21 recessed in the upper part of the casing 1 so as to face the discharge duct 5, and these mounting plates 21, 21 4 bolts with 4 corners
2 and the nut 23 are fastened and attached. In addition,
The discharge duct is supported by a flange 5a provided in the opening 1a of the casing 1.

By mounting the blower 6 and the electric motor 7 in the casing 1 with the above mounting structure,
When performing maintenance, the common base 9 on which the blower 6 and the electric motor 7 are arranged can be pulled out to the outside of the casing 1 simply by removing the bolts 22 and the nuts 23 that fix the common base 9. You can improve the property.

Further, the vibration isolator 13 is provided only on the supporting portion of the electric motor 7.
Since they are arranged and fixed to the mounting plates 14 and 15 on the side of the common pedestal 9, it is possible to take anti-vibration measures for a small area, and a sufficient anti-vibration effect can be obtained.

[0018]

As described above, according to the present invention, the long shaft output shaft of the electric motor is directly connected to the impeller in the fan casing by the cantilever structure without the bearing on the side of the fan, and only the electric motor is protected. Since we applied the swing material and attached it to the common mount,
There is no need to attach a vibration-proof material to the common mount that has the blower and the electric motor as in the past, and to attach it to the mounting plate on the air conditioner casing side, eliminating the need for a flexible duct joint to prevent re-inhalation of discharge air from the blower. Therefore, the number of parts can be reduced.

Further, at the time of maintenance, it is not necessary to remove the flexible duct joint and the antivibration material one by one as in the conventional case, and by simply removing the bolts and nuts, the common stand on which the blower and the electric motor are arranged is pulled out to the outside of the air conditioner casing. Necessary maintenance can be performed and workability can be improved.

Further, the vibration-proof material may be applied only to the supporting portion of the common frame of the electric motor, and since the area to be vibration-proofed can be reduced, there is an advantage that the vibration-proof effect can be sufficiently obtained.

[Brief description of drawings]

FIG. 1 is a front view showing an air conditioner to which the present invention is applied.

FIG. 2 is a longitudinal cross-sectional view of a main part showing a mounting structure of a blower and an electric motor in a casing of an air conditioner according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a vertical cross-sectional view of a main part showing a conventional attachment structure of a blower and an electric motor.

6 is a cross-sectional view taken along the line CC of FIG.

FIG. 7 is a sectional view taken along line DD of FIG. 5;

FIG. 8 is a perspective view showing a flexible duct joint.

FIG. 9 is an explanatory diagram showing a state in which the discharge air of the blower is sucked again.

FIG. 10 is an explanatory view showing a gap S formed between a mounting plate and a common mount.

[Explanation of symbols]

 1 Air conditioner casing 2 Filter 3 Cold / hot water coil 4 Evaporative humidifier 5 Discharge duct 6 Blower 7 Electric motor 8 Blower casing 9 Common stand 10 Air outlet 11 Impeller 12 Long shaft output shaft 13 Vibration damping material 14, 15 Installation Plates 14a, 15a Mounting surface 16 Fixing bases 16a, 16b Upper plate part 17,19 Bolts 18,20 Nuts 21 Mounting plate 22 Bolts 23 Nuts

Claims (1)

[Claims] 1. A blower anti-vibration structure for mounting a blower for blowing air conditioned by an air conditioner from a discharge duct to the outside in an air conditioner casing, wherein the blower casing is mounted on a common stand, and the length of an electric motor is increased. An air conditioner in which one end of the shaft output shaft is directly connected to the impeller in the blower casing with a cantilever structure, the electric motor is attached to the common stand via the vibration isolator, and the common stand on which the blower and the electric motor are installed faces the discharge duct. A blower vibration isolation structure for an air conditioner, which is fixed to a mounting plate inside a machine casing.