JP3048908B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized air conditioner for general household use, and more particularly to a structure for assembling a cross-flow fan to be installed in an indoor unit.

[0002]

2. Description of the Related Art Generally, a separation type air conditioner has an outdoor unit and an indoor unit. The outdoor unit takes in outside air by a fan, performs heat exchange in a heat exchanger, and cools and is compressed by the outside air. Is sent to the indoor unit. In the indoor unit, indoor air is taken in by a fan, heat is exchanged in a heat exchanger, and the cooled air is blown into the room as cold air.
In addition to a cooling operation in which cool air is blown out, a device that heats air passing through a heat exchanger with an auxiliary heater is also known in a dehumidifying operation called a dry operation. In the indoor unit of this air conditioner,
A cross flow fan is used for blowing air. In the cross flow fan, a number of elongated blades are arranged on a circumference with their respective longitudinal directions parallel to each other, and form a whole cylindrical shape.
This cylindrical cross flow fan rotates around a rotation axis extending through the center of the cylinder.

As shown in FIG. 6, one end of a rotating shaft 52 of a conventional cross flow fan 51 serves as a boss 53 and is connected to a driving shaft of a motor 54. That is, the boss 53 has a cylindrical shape, and the drive shaft 55
It can be inserted. Drive shaft 55 inserted
Are tightened by the tip of a fixing screw 56 penetrating inward from the outer periphery of the boss portion 53 to be connected.

Prior to this connection, when positioning the cross flow fan 51 and the motor 54 on the main body of the indoor unit, the positioning is performed by a partition plate 58 formed on a frame 57. The partition plate 58 is provided with a guide cylinder 59 for guiding the boss 53 of the cross flow fan 51 to the motor 54 side. When assembling the cross flow fan 51, the motor 54 is temporarily positioned on the frame 57 first, and the boss 53 of the cross flow fan 51 is guided to the guide cylinder 59 of the frame 57. Then, the boss portion 53 is guided to the guide cylinder portion 59 and is guided out from the opposite side.
Drive shaft 55 is inserted. After that, the end of the cross flow fan 51 on the opposite side of the rotating shaft 52 is supported by the bearing of the frame 57. In this manner, the cross flow fan 51 and the motor 54 are completely positioned with respect to the frame 57. Then, the boss 5 is fixed by the fixing screw 56.
3 and the drive shaft 55 are completely connected.

[0005]

However, in the conventional structure, when the boss portion 53 of the cross flow fan 51 is guided to the guide tube portion 58 provided on the partition plate 58 of the frame 57, as shown in FIG. The boss portion 53 collides with the entrance side of the guide cylinder portion 59, and the work becomes difficult. In order to perform positioning, the boss portion 53 must be guided to the guide cylinder portion 59 in a state where the cross flow fan 51 is tilted and laid almost parallel to and near the frame 57, but the cross flow fan 51 is tilted too much. Thus, the possibility that the cross flow fan 51 comes into contact with the bearing portion of the frame 57 increases.
For this reason, the operator must attach the crossflow fan 51 with great care.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air conditioner which can solve the above-mentioned problems of the prior art and can easily assemble a cross flow fan.

[0007]

In order to achieve the above object, an invention according to claim 1 is provided for separating an air passage having a cross flow fan and an electric equipment room having a motor in a frame of an indoor unit main body. In the air conditioner provided with a guide plate for guiding the boss portion of the cross flow fan to the electrical equipment room side with the motor,
When the boss is led out to the motor side, the guide tube is provided with a recess through which the boss passes so that the boss does not contact the guide tube. .

According to a second aspect of the present invention, a frame for the indoor unit main body is provided with a partition plate for separating an air passage having a cross flow fan and an electric equipment room having a motor, and the partition plate has a cross flow fan. In the air conditioner provided with a guide tube portion for leading the boss portion to the electric equipment room side where the motor is provided, when the boss portion is led to the motor side, the boss portion does not abut on the guide tube portion. As described above, the guide tube portion is provided with a recess through which the boss portion passes, and the recess is formed from the inner peripheral surface to the outer peripheral side of the guide tube portion. The fan has a tapered shape in which the inlet side of the guide tube portion into which the boss portion is obliquely guided is deep and the back side is shallow.

According to these inventions, the concave portion is provided in the guide cylinder, so that when the boss is led out to the motor side,
The boss does not abut the guide tube. Therefore, the cross flow fan can be easily assembled.

[0010]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. The air conditioner according to the present embodiment is a so-called home air conditioner, and includes an outdoor unit and an indoor unit connected to the outdoor unit.

As shown in FIGS. 2 to 4, the indoor unit 1 has a structure to be attached to a wall in a room. As shown in FIGS. 3 and 4, the main body frame 2 of the indoor unit 1 has a heat exchanger 3, a blower 4 including a cross flow fan 16, an auxiliary heater 5, and a control unit 6 for controlling these. Are provided.

As shown in FIG. 2, a front panel 7 is attached to the frame 2, and a suction port 8 is formed in front of the front panel 7, and a filter 9 is arranged inside the suction port 8. Have been. An outlet 11 is formed below the front panel 7.
1 is provided with up-down guide vanes 12 for guiding the air blowing direction and left-right guide vanes 13.

As shown in FIG. 4, the heat exchanger 3 is connected to an outdoor unit (not shown) of the air conditioner through a refrigerant pipe 14, and a refrigerant from the outdoor unit is introduced into the heat exchanger 3. You. The blower 4 includes a long cylindrical cross flow fan 16 rotated by a motor 15 and an air guide plate 17 for guiding the air blown out by the cross flow fan 16. This air guide plate 17
As shown in FIG.
8, a portion 17a for accommodating the cross flow fan 16 is formed in a concave shape, and a throttle port 17b corresponding to an inflow port of the blower 4 is formed in a convex shape. On the back plate 18, the auxiliary heater 5 is disposed above the cross flow fan 16. This auxiliary heater 5
Is disposed between the heat exchanger 3 and the cross flow fan 16 in the wind passage, and when dry operation is performed,
If necessary, the cool air dehumidified by passing through the heat exchanger 3 is heated to a predetermined temperature.

As shown in FIGS. 1 and 5, the main body frame 2 of the indoor unit 1 is provided with a partition plate 21 for separating an air passage having a cross flow fan 16 from an electric equipment room having a motor 15. The partition plate 21 is integrally provided with a guide cylinder 22 having a circular cross section. The guide tube portion 22 is for leading a boss portion 24, which is one end of the rotating shaft 23 of the cross flow fan 16, to the electrical equipment room side where the motor 15 is located.

The inner peripheral surface 22b of the guide cylinder 22 (the guide cylinder 2
2 (see the enlarged view of FIG. 2), the concave portion 2
2a is formed. The depth of the concave portion 22a to the outside in the radial direction is deep on the inlet side, shallow on the deep side, and no concave portion is formed on the outlet side. In short, the concave portion 22a has a tapered shape.

The boss portion 24 has a cylindrical shape and has the motor 1 therein.
The fifth drive shaft 25 can be fitted. A female screw hole is formed in the cylindrical boss portion 24 from the outer peripheral side toward the inner peripheral side.
6 is screwed. When the fixing screw 26 is screwed in, the tip of the fixing screw 26 projects to the inner periphery of the cylindrical boss 24 to fix the drive shaft 25 of the motor 15. Partition plate 21
Is a concave portion 17 for accommodating the cross flow fan 16.
a at one end. At the other end, a bearing portion 28 for supporting the other end 27 of the rotating shaft 23 of the cross flow fan 16 is provided. This bearing portion 28
Is composed of a bearing body 28a and a bearing cover 28b provided integrally with the frame 2.

In the above embodiment, the procedure for assembling the cross flow fan 16 will be described.
5 is temporarily positioned with respect to the frame 2 in advance. Then, the cross flow fan 16 is inclined with respect to the frame 2, and the boss 24, which is one end of the rotation shaft 23 of the cross flow fan 16, is positioned at the entrance side of the guide tube 22 provided on the partition plate 21. Lead. Further, the boss portion 24 and the fixing screw 26 pass through the concave portion 22 a formed in the guide tube portion 22. At this time, the boss 24 and the fixing screw 2
The locus of No. 6 extends along the tapered recess 22a along the recess 2a.
2a. Thus, the guide cylinder 2
The drive shaft 25 of the motor 15 is inserted into the boss portion 24 that is led out on the opposite side of 2, ie, the outlet side.

After the insertion, the cross flow fan 16 and the motor 15 are completely parallel to the frame 2 and positioned at a predetermined position. At this time, the other end 27 of the rotation shaft of the cross flow fan 16 is supported by the bearing main body 28a of the frame, and the bearing cover 28b is covered and fixed from above. Then, the fixing screw 2 of the boss portion 24
6, the distal end of the fixing screw 26 presses the drive shaft 25 of the motor 15, and the connection between the cross flow fan 16 and the motor 15 is completed.

In short, according to this embodiment, when the cross flow fan 16 is assembled to the frame 2, the boss portion 24 of the cross flow fan 16 is guided to the inside of the guide tube portion 22. By passing through the formed concave portion 22a, it is not necessary to hit the guide tube portion 22. Therefore, the cross-flow fan 16 is assembled in a state where the cross-flow fan 16 is inclined, and it is not necessary to lay the cross-flow fan 16 close to a state parallel to the frame 2 as in the related art. The possibility of contact with the unit main body 28a or the like is reduced. According to this, the assembling work becomes easy, and shortening of the assembling time and prevention of breakage of the cross flow fan 16 and the frame 2 can be expected.

In the above embodiment, the guide cylinder 22
Although the concave portion 22a formed in the concave portion is tapered, it is not tapered in other embodiments, and the depth of the concave portion to the outside in the radial direction can be the same on the inlet side and the outlet side. is there.

[0021]

According to the first aspect of the present invention, a concave portion is provided in the guide tube portion of the partition plate, and the boss portion of the cross flow fan guided obliquely passes through the concave portion, so that the boss portion becomes the guide tube portion. The cross flow fan is led out to the electrical equipment room side where the motor is located without hitting the motor, so that the cross flow fan can be easily assembled.

According to the second aspect of the present invention, the concave portion is tapered, so that the concave portion can be made deeper on the inlet side of the guide cylinder portion and shallower on the inner side, so that the boss becomes oblique. It will be easier to guide the part.

[Brief description of the drawings]

FIGS. 1A and 1B are views for explaining assembly of a cross flow fan in an indoor unit of an air conditioner according to an embodiment of the present invention, wherein FIG. 1A is a perspective view immediately before assembly, and FIG. (C) is an enlarged view of a main part of (B).

FIG. 2 is an overall perspective view of an indoor unit of the air conditioner according to the embodiment.

FIG. 3 is a cross-sectional view of FIG.

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is a front view of a main part of FIG. 1 (C).

FIG. 6 is a diagram for explaining a problem of the conventional example and corresponding to FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Frame 15 Motor 16 Cross flow fan 21 Partition plate 22 Guide cylinder part 22a Depression 24 Boss part

──────────────────────────────────────────────────続 き Continuing on the front page (72) Kenichi Nakajima 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Kensuke Matsumoto 2-5-5 Keihanhondori, Moriguchi City, Osaka Prefecture No. 5 Sanyo Electric Co., Ltd. (72) Inventor Naoto Saito 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1 / 00 311 F24F 1/00 321

Claims (2)

(57) [Claims] 1. A partition plate for separating an air passage having a cross flow fan from an electric equipment room having a motor is provided on a frame of an indoor unit main body, and the partition plate has a boss portion of the cross flow fan having a motor. In the air conditioner provided with a guide tube portion for leading out to the electrical equipment room side, when the boss portion is led out to the motor side, the guide tube portion is so arranged that the boss portion does not contact the guide tube portion. An air conditioner, wherein a concave portion through which the boss portion passes is provided. 2. A partition plate for separating an air passage having a cross flow fan from an electric equipment room having a motor is provided on a frame of the indoor unit main body, and the partition plate has a boss portion of the cross flow fan having a motor. In the air conditioner provided with a guide tube portion for leading out to the electrical equipment room side, when the boss portion is led out to the motor side, the guide tube portion is so arranged that the boss portion does not contact the guide tube portion. The boss portion is provided with a recess through which the recess is formed from the inner peripheral surface of the guide tube portion to the outer peripheral side, and the depth of the concave portion is such that the boss portion of the cross flow fan is inclined at the time of assembly. An air conditioner having a tapered shape in which an inlet side of a guide tube portion to be guided is deep and a back side is shallow.