JPS5846323Y2 - Air blower for air conditioner - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to the structure of a blower device for an air conditioner.

In air conditioners with thin structures such as ceiling-suspended indoor units, blowers with multiple sirocco fans connected directly in tandem to the rotating shaft of a motor are often used in order to blow out conditioned air with a high air volume and over a wide area. There is.

In such a multi-connected structure, the axial length after connection becomes considerably long, and unless care is taken in supporting means through bearings, vibration and noise will occur due to rotational vibration, which is undesirable.

However, it is very difficult to provide linear accuracy to the shafts after they are connected, and it is necessary to improve the assembly accuracy at the attachment points to the fixing frame and the couplings between the shafts, so it requires skilled labor. As a result, this method not only makes it difficult for workers to carry out mass production, but also causes various inconvenient problems such as an increase in assembly costs.

The present invention has been devised to address these conventional deficiencies and to provide an improved blower device that can simplify assembly while maintaining sufficient linear accuracy of the long axis. It consists of at least two fans with separate fan housings and fan rotors, a motor, and a mounting plate for integrally supporting each fan and motor and fixing them to the air conditioner main body, and each fan rotor is The motor is directly connected in tandem to both rotational shafts of the motor to form a multiple-structure blower, and the mounting plate includes a front plate portion having a length adapted to the axial length of the blower, and both ends of the front plate portion. The motor and the fan housing surrounding the fan rotor are each fixed to the front plate part by forming a substantially U-shaped cross section with a side plate part bent at right angles from the side plate part. , the fan rotor and the motor are connected in advance while maintaining high linear accuracy, and the fan rotor and the motor are connected in advance while maintaining high linear accuracy; It is possible to easily attach this to the mounting plate without being affected by the installation of the fan housing,
The intended purpose ended up being a distant relative here.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 schematically shows an air conditioner according to an embodiment of the present invention, and shows an air conditioner having a wide frontage, such as a ceiling fan shape, and a relatively short length and depth.

In this air conditioner, a blower 2 with a wide blowing section is installed horizontally in front of an indoor coil 1, with the blowing section facing a blowing grill 3 on the front side.

The blower 2 has a multiple structure as shown in the second example, and includes at least two (four in this example) sirocco fans 4,
4..., a motor 5, and a mounting plate 6 for supporting and fixing them to the frame of the main body casing.

The motor 5 and the sirocco fans 4, 4, . . . refer to the fan rotors 8 of the fans 4, 4, .
b, 11b, two fan housings 7 are directly connected in tandem in two equal parts to b, surround each fan rotor 8, 8, and are separated from the fan rotor 8. has been established.

On the other hand, as shown in FIGS. 3 and 4, the mounting plate 6 has a front plate portion 6a having a length that corresponds to the axial length of the blower 2, and a new curve extending at right angles to both ends of the front plate portion 6a. side plate parts 6b, 6
The metal plate is formed into a plate having a substantially U-shaped cross section, and a desired shape can be easily obtained by pressing a single metal plate.

In the illustrated example, bent edges 5a' are provided on both sides of the front plate part 6a, and bent edges 6b' are also provided at the front ends of the side plate parts 6b, 6b, respectively, so that reinforcing ribs and It functions as a mounting plate to the main body frame.

The front plate part 6a has a hole 9 opened at a predetermined position for penetrating the front end of the rectangular cylindrical blowing part of each sirocco fan 4, while the side plate parts 6b, 6b have holes 9 opened at a predetermined position. Holes for pivotally supporting both rotating shaft ends 11C and IIC of the blower 2 via bearings 10.10 are opened at predetermined positions.

Then, the motor 5 and fan housing 7 are connected to the front plate portion 6a.
and both rotating shaft ends 11C and II of the blower 2.
C through the side plate portion 6b through the bearings 10, 10 using the hole.
, 6b, thereby forming a multiple-structure blower 2, and this integrated blower 2 is installed at a predetermined position within the main body casing.

The procedure for assembling the blower 2 will be briefly explained as follows.

If the sirocco fan 4 has a structure in which the diameter of the suction port is larger than the maximum diameter of the fan rotor 8, the integral fan housing 7 is later surrounded by the fan rotor 8. Therefore, the housing 7 and the fan rotor 8 are first separated, and two fan rotors 8 are fitted in tandem to the rotating shafts 11a and lla of a predetermined length, respectively, so as to be connected in multiple units (the example shown is 2) fan rotor parts are formed.

On the other hand, the motor 5 is fixed at a predetermined position on the front plate portion 6a of the mounting plate 6 via the mounting leg member 12.

Next, after covering each fan rotor 8 in the two series of fan rotor sections with the fan housing 7, one end of the rotating shaft 11a, lla of the fan rotor section is connected to the rotating shaft 11 of the motor 5 via a coupling. b, 11b, and the other ends 11C, 11C are pivoted to side plate parts 6b, 6b via bearings 10, 10.

It is preferable that the bearing 10 be a vibration-proof type bearing in which a vibration-proof rubber is interposed between the bearing and the mounting seat.

In this way, after the motor 5 and the multiple fan rotor section are connected and fixed, the fan housing 7
are fixed to the front plate portion 6a at positions corresponding to each fan rotor 8 by means such as screw tightening, and the assembly of the blower device is completed.

Although the above is an example of a general case, the illustrated embodiment has a structure in which the fan housing 7 of each fan 4 is divided into two housing members 7a and 7b by a cut plane that crosses the suction port. These two housing members 7a, 7b
are butted around the fan rotor 8 and integrally combined to form the fan housing 7, and furthermore, hooks 13 are provided dispersedly at the joint portion of both members 7a and 7b, and the hooks 13 are disposed after assembly. Both housing members 7a
.

7b can be integrated.

By dividing the fan housing 7 in this way, the fan housing 7 can be easily installed after the motor 5 and the multiple fan rotor portion have been connected and fixed to the mounting plate 6, thereby streamlining the work. , further simplification can be achieved.

As clarified from the above explanation, the present invention is based on the fan 4.
Since the fan housing 7 and the fan rotor 8 are separable and can be fixed to the mounting plate 6 after the motor 5 and the fan rotor 8 have been axially connected in advance, the axial length is relatively long. Since the assembly of the multiple blower 2 can be performed individually and easily in advance with high accuracy in the axis alignment, the number of assembly steps can be reduced, and there is an advantage that even a person without advanced technology can easily assemble it.

Further, since the rotating portion and the fan housing 7 are independent from each other, the housing 7 can be easily assembled without regard to axial alignment.

In addition, after the fixing means for the rotating parts and the fixing means for the fan housing 7 are done separately, the entire blower is attached to the standardized mounting plate 6, so assembly to the air conditioner body is easy and reliable. At the same time, the mounting plate 6 itself functions as a reinforcing material, and the side plate parts 6b, 6b function as a partition plate on the suction side, simplifying the structure of the air conditioner.
The present invention has a variety of versatile effects, such as being able to be used in combinations.

[Brief explanation of the drawing]

Each figure shows an aspect of an example of the device of the present invention, and FIG. 1 is a suggested structural diagram of an air conditioner according to one embodiment, FIG. 2 is a suggested perspective view of an air blower, and FIGS. 3, 4, and 5. 1A and 1B are an elevational view, a plan view, and a side view of the blower device. 2...Blower, 4...Fan, 5...
...Motor, 6...Mounting plate, 6a...
...Front plate part, 6b...Side plate part, 7...
Fan housing, 8...Fan rotor, 10
... Bearing, 11 a, 11 b ... Rotating shaft, 11 C ... Rotating shaft end.

Claims (1)

[Scope of utility model registration request] 1. At least two fans 4 consisting of a fan housing 7 and a fan rotor 8 separated from each other, a motor 5, and each fan 4 and motor 5 are integrally supported and fixed to the air conditioner body. and a mounting plate 6 for attaching each fan rotor 8 to both rotating shafts 11a, 11 of the motor 5.
The mounting plate 6 has a front plate portion 6a having a length adapted to the axial length of the blower 2, and a front plate portion 6a of the front plate portion 6a. The front plate is formed into a substantially U-shaped plate in cross section with side plate portions 6b extending at right angles from both ends, and the fan housing 7 surrounding the motor 5 and each of the fan rotors 8 is connected to the front plate. 6a, and both rotating shaft ends 11c, 11c of the blower 2
A blower device for an air conditioner, comprising: pivotally supported on the side plate portions 6b, 6b via bearings 10, 10, respectively. 2. The fan housing 7 surrounding the fan rotor 8,
The air conditioner according to claim 1, which is registered as a utility model, and consists of two housing members 7 a and 7 b that are divided into two by a cut plane that crosses the suction port and can be integrally joined by abutting around the fan rotor 8. Air blower.