JPH1123009A - Fan fixer for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the securing of an air passage widely as well as the contriving of reduction of noise by restraining the generation of eddy in the air passage, reduce the weight of a fixer or an outdoor machine, and improve the mounting workability of the fixer in a fixer for mounting a fan for an air conditioner (outdoor machine). SOLUTION: An air conditioner is provided with a supporting frame 9 for mounting a fan 1 and supporting rods 81, 81, arranged across the air passage F of a heat exchanging chamber 6. The external profile line of the supporting rod 81 is a stream line in the cross section. The supporting rod is formed of a hollow pipe material. The lower end of the supporting rod is retained by a connecting device 5 provided on the bottom part of the heat exchanging chamber 6, so as to be fitted thereinto whereby the supporting rods are installed in the heat exchanging chamber 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for a blower of an air conditioner, and more particularly to a fixing device used for mounting the blower in a heat exchange chamber of an outdoor unit of the air conditioner.

[0002]

2. Description of the Related Art FIG. 6 shows a blower 1 mounted on an outdoor unit A of an air conditioner and a conventional fixing device 3 used for mounting the blower 1. The blower 1 includes a rotating blade 11 and an electric motor 1 for driving the rotating blade 11.
The rotating blades 11 are fixed to the rotating shaft 13 of the electric motor 12 using the stoppers 14. The electric motor 12
Is provided with a mounting flange 15. This blower 1
Is the fixture 3 provided in the heat exchange chamber 6 of the outdoor unit A.
Attached to.

The fixture 3 is manufactured by performing sheet metal working such as punching and bending on a flat steel plate. The fixing device 3 includes a seat plate portion 31 to which the mounting flange 15 of the electric motor 12 is mounted using a mounting screw 16, a pair of left and right support arms 32, 32 extending vertically from the seat plate portion 31.
Mounting pieces 33, 33, reinforcing ribs 34, and the like provided at the ends of the upper and lower support arms 32, 32 are integrally formed, and the upper and lower mounting pieces 33, 33 are formed at the bottom of the heat exchange chamber 6. It is fixed to the member 61 and the upper member (not shown) using the mounting screw 35.

When the blower 1 attached to the seat plate 31 of the fixture 3 is operated via the attachment flange 15 of the electric motor 12, an opening formed between the pair of left and right support arms 32 of the fixture 3 is operated. The wind passes through 36 and the right and left sides of the fixture 3 to form an air path as indicated by an arrow F, and heat exchange is performed between the wind flowing through the air path and the heat exchanger 7.

[0005]

However, the conventional fixing device 3 is made of sheet metal as described above, and the flat support arm 32 and the seat plate 31 are disposed so as to cross the air path F up and down. It has been configured. For this reason, not only is there a lot of restriction in securing the air path F widely, but also as shown in the explanatory view of the support arm 32 in FIG. Turbulence is caused by the influence of the support arm 32 crossing F, and a vortex F3 is generated on the windward or leeward side of the support arm 32, which is one of the causes of noise.

Further, since the conventional fixing device 3 is manufactured by subjecting a flat steel plate to sheet metal processing, it is heavy and lacks in handleability at the time of assembling. There was a problem that the weight of the outdoor unit A employed was increased.

Further, there is another problem that the operation of attaching the conventional fixing device 3 to the bottom member 61 or the like at the bottom of the heat exchange chamber 6 using the attachment screw 35 is troublesome.

The present invention has been made in view of the above circumstances and problems, and by devising the shape of the fixture, it is easy to secure a wide air path, and furthermore, the generation of vortices in the air path. It is an object of the present invention to provide a blower fixing device for an air conditioner that suppresses noise and reduces the weight of the fixing device and the outdoor unit while further reducing the weight of the fixing device and the outdoor unit. I do.

[0009]

A blower fixing device for an air conditioner according to the present invention includes a blower having rotating blades and an electric motor for driving the rotating blades installed in a heat exchange chamber of the air conditioner. A fixing frame for mounting the blower, and a support rod provided in the heat exchange chamber across the air path of the heat exchange chamber and including a mounting portion for the support frame. And that the contour of the outer surface of the support rod is streamlined in transverse view.

According to the present invention, the blower is mounted on the support frame, and the support frame is mounted on the mounting portion of the support rod provided in the heat exchange chamber. This support rod is
Although it is deployed across the air passage of the heat exchange chamber, the contour of the outer surface of the support rod is streamlined in a transverse view,
A situation in which the flow of the wind passing through the air path is disturbed by the influence of the support rod is less likely to occur, and as a result, a vortex that causes noise is less likely to be generated.

In the air conditioner blower fixture according to the present invention, the contour of the outer surface of the support rod has a greater curvature at the leeward end than at the windward end of the air path. And a configuration in which the contour of the outer surface located at the leeward end and the contour of the outer surface located at the leeward end are smoothly continuous with a curved line. Is desirable.

According to the present invention, after the flow of the wind passing through the air path is distributed to the left and right sides without significant turbulence at the windward end of the outer surface of the support rod, the wind flows to the leeward side without turbulence. It then flows away from the leeward end of the outer surface of the support rod without disturbing, and flows downwindward.

[0013] In the blower fixing device for an air conditioner according to the present invention, it is desirable that the support rod is formed of a hollow body. In this case, the support rod is reduced in weight, and furthermore, the support rod is reduced. The air conditioner using is reduced in weight.

In the blower fixing device for an air conditioner according to the present invention, a fitting portion is formed at an axial end of the support rod, and the fitting portion is fixed to a bottom portion of the heat exchange chamber. It is preferable to adopt a configuration in which the supporting rod is provided in the heat exchange chamber while being held in a fitted state by the provided tubular coupling tool.

According to the present invention, the support rod is disposed in the heat exchange chamber by fitting and holding the fitting portion of the support rod to the cylindrical connecting member fixed to the bottom of the heat exchange chamber. Is done. Therefore, it is not necessary to perform a troublesome operation such as mounting the fixing tool to the bottom member of the heat exchange chamber with the mounting screw.

[0016]

1 is a schematic perspective view of an air conditioner using a fixing device 8 according to the present invention, in particular, an outdoor unit A partially cut away, and FIG. FIG. 3 is a plan view of the fixture 8 to which the electric motor 12 is attached, FIG. 4 is an operation explanatory view, FIG. 5A is a cross-sectional plan view of a support rod 81, and FIG. (b) is a cross-sectional plan view of a support rod 81 according to a modification.

As shown in FIG. 1, the blower 1 includes a rotating blade 11 and an electric motor 12 for driving the rotating blade 11, as in the conventional example.
The rotating blades 11 are fixed to the rotating shaft 13 of the electric motor 12 using the stoppers 14. The motor 12 has a mounting flange 1.
5 are provided.

As shown in FIG. 1, the fixture 8 is provided in the heat exchange chamber 6 of the outdoor unit A, and has a support rod 81 and a support frame 9.

As shown in FIGS. 1 and 2, the support rod 81 is formed by a straight rod-shaped member. Even if such a supporting rod 81 is formed by a hollow body obtained by cutting a pipe material as shown in FIG. 5A to a predetermined length, the rod material as shown in FIG. It may be formed by a solid body. When a hollow body as shown in FIG. 5A is used for the support rod 81, the weight of the support rod 81 is reduced, and the handleability thereof is improved.
As a result, the weight of the outdoor unit is reduced.

As shown in FIG. 4, the support rod 81
Has a streamlined cross-sectional profile on its outer surface. Explaining this point in detail, the support rod 81 has a cross section that is long in one direction as shown in FIG.
The curvature of the contour line L2 at the end 83 on the other side is larger than the curvature of the contour line L1. In other words, the radius of the contour L1 of the one end 82 is larger than the radius of the contour L2 of the other end 83. Then, both the contour lines L1 and L2 described above are smoothly continued by left and right curved lines L3 and L3 projecting outward. The support rod 81 whose outer surface has a streamlined cross-sectional view can be manufactured by pressing a pipe material or by drawing a pipe material having a streamlined outer surface. As shown in FIG. 2, the support rod 81 has a mounting portion 85 for the support frame 9 at the center and a fitting portion 86 at the lower end in the axial direction.

As shown in FIGS. 1 and 2, a pair of right and left support rods 81 is used, and a fitting portion 86 at the lower end of each support rod 81 is connected to the bottom of the bottom of the heat exchange chamber 6 of the outdoor unit A. It is connected to a pair of left and right connecting tools 5 fixed to the member 61. As shown in detail in FIG. 2, the connecting tool 5 includes a tubular portion 51 and a mounting flange 52 provided at a lower end of the tubular portion 51, and as shown in FIG. It is screwed to the bottom member 61 of the heat exchange chamber 6. The shape of the cylindrical portion 51 of the connecting tool 5 may be a regular cylindrical shape, but is preferably a shape in which the fitting portion 86 of the support rod 81 can be fitted without a gap. The upper end of the support rod 81 is fixed to an upper member (not shown) by welding or other known means.

As shown in FIG. 2 and FIG.
Has a front plate 91 and a back plate 92. The front plate 91 has flanges 93 on both left and right sides thereof. Backboard 92
Also has flanges 94 on both left and right sides. In addition, the back plate 92 is provided with concave holding portions 95, 95 at positions adjacent to the frame 94. A front plate 91 is provided on the front side and a back plate 92 is provided on the rear side with the pair of left and right support rods 81 and 81 interposed therebetween.
The front plate 91 and the back plate 92 are overlapped with each other, and the flanges 93 and 94 are overlapped with each other and fastened with a fastening tool 96 composed of a mounting screw and a nut.
Are linked. At the same time, the holding portion 95 of the front plate 91 and the back plate 92 presses the mounting portion 85 of the support rod 81, whereby the support frame 9 is fixed to the support rod 81. In order to increase the mounting strength at this time, a sharp projection that bites into the support rod 81 is provided on the inner surface of the holding section 95 of the back plate 92, or the mounting section 85 of the support rod 81 is slightly reduced in diameter. It is effective to make the support frame 9 depressed, so that it is possible to reliably prevent the support frame 9 from slipping and falling.

The mounting flange 15 of the electric motor 12 is mounted on the front plate 91 of the support frame 9 using mounting screws 16.

As described above, when the blower 1 is installed in the heat exchange chamber 6 of the outdoor unit A using the support rod 81 and the support frame 9, the left and right support rods 81 are connected to the air passage F ( FIG.
(See below). In this case, as can be inferred from FIG. 4, one end 82 having a small curvature is arranged on the windward side of the air passage F, and the other end 82 having a large curvature is arranged on the leeward side of the air passage F. It is desirable to keep.

With the above configuration, when the blower 1 is operated, the wind passes through a wide space on both sides of the pair of left and right support rods 81 of the fixture 3 to form an air path F. Since the air path F is wider than the case where the conventional fixture 3 described at the beginning is used, the air flowing through the air path and the heat exchanger 7 are not used.
The heat exchange efficiency is improved between them and it is useful for power saving. Even if the support rod 81 crosses the air path F up and down, since the outer surface of the support rod 81 is streamlined, the flow F1 of the wind passing through the air path F is supported as shown in FIG. After being distributed to the left and right without significant disturbance at the windward end 82 of the outer surface of the rod 81, it flows to the leeward side without disturbance, and furthermore, the leeward end 8 of the outer surface of the support rod 81.
3 away without turbulence and further downwind. Therefore, a situation in which the flow of the wind passing through the wind path F is disturbed by the influence of the support rod 81 is less likely to occur, and noise is reduced.

[0026]

According to the present invention, the air path of an air conditioner equipped with a blower is widely secured, and at the same time, the generation of vortices in the air path is suppressed, so that noise caused by the generation of vortices is reduced. Thus, the noise of the air conditioner can be reduced. Further, by reducing the weight of the support rod, it is possible to improve the handleability of the support rod and to reduce the weight of the air conditioner. Furthermore, the mounting workability of the fixture when installing the blower in the heat exchange chamber is improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view in which a part of an air conditioner using a fixture according to the present invention is broken.

FIG. 2 is a schematic exploded perspective view showing a fixture and an electric motor.

FIG. 3 is a plan view of a fixture to which an electric motor is attached.

FIG. 4 is an operation explanatory view.

FIG. 5A is a cross-sectional plan view of a support rod. (B) is a cross-sectional plan view of a support rod according to a modification.

FIG. 6 is a schematic perspective view in which a part of an air conditioner using a conventional fixing device is cut away.

FIG. 7 is an explanatory view showing a problem of a conventional fixing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blower 5 Connecting device 6 Heat exchange chamber 8 Fixing device 9 Support frame 11 Rotating blade 12 Electric motor 81 Support rod 82 Upwind end of outer surface of support rod 83 Downwind end of outer surface of support rod 85 Mounting part 86 Fitting part F Wind path L1 Contour line located at the leeward end L2 Contour line located at the leeward end L3 Curved line

Claims (4)

[Claims] 1. A blower fixing device for disposing a blower including a rotating blade and an electric motor for driving the rotating blade in a heat exchange chamber of an air conditioner, the support frame to which the blower is attached. And a support rod provided in the heat exchange chamber across the air path of the heat exchange chamber and provided with a mounting portion for the support frame, and the contour of the outer surface of the support rod has a streamlined cross-sectional view. A blower fixing device for an air conditioner, characterized by being provided. 2. A contour line of an outer surface of the support rod has a curvature at a leeward end thereof larger than a curvature at a leeward end of the air passage, and is located at a leeward end. 2. The contour line of the outer surface and the contour line of the outer surface located at the leeward end are smoothly continuous with a curved line.
An air conditioner blower fixing device described in (1). 3. The air conditioner blower fixing device according to claim 1, wherein the support rod is formed of a hollow body. 4. A fitting portion is formed at an axial end of the support rod, and the fitting portion is fitted to a cylindrical connecting member fixedly provided at the bottom of the heat exchange chamber. 4. The air conditioner blower fixture according to claim 1, wherein the support rod is held in the heat exchange chamber and is held in the heat exchange chamber.