JP5877364B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner of a type in which air sucked from a side through a heat exchanger is blown upward by an outdoor fan.

  2. Description of the Related Art Conventionally, an outdoor unit of an air conditioner is known in which an air blower is provided on an upper portion of a housing and air sucked from a side surface of the housing is blown upward by the air blower (see, for example, Patent Document 1). In the outdoor unit of Patent Document 1, the motor of the blower is supported from below so as to be placed on a motor support having a U-shaped cross section. This motor support base is arranged so that the U-shaped opening faces the motor side, and by providing a rectifying member that closes the U-shaped opening, it is possible to suppress the occurrence of air flow vortices. Yes. Further, on the surface of the motor support base, a triangular rectifying member protruding toward the upstream side is provided on the upstream surface of the air flow passing around the motor support base, and the air flow is converted into a triangular rectification. Ventilation resistance is reduced by rectifying with a member.

Japanese Patent No. 3985840

However, in the above-described conventional outdoor unit, the rectifying member is provided on the lower surface side that is upstream of the motor support base, and is not rectified on the upper surface side downstream of the motor support base, so the ventilation resistance is greatly reduced. There is a problem that it cannot be done.
This invention is made | formed in view of the situation mentioned above, and it aims at enabling it to reduce ventilation resistance in the outdoor unit of an air conditioning apparatus.

In order to achieve the above object, according to the present invention, a pair of motor support bases are arranged on an upper portion of a housing, an outdoor fan motor is supported on the pair of motor support bases, and heat exchange in the housing is performed by the outdoor fan. In the outdoor unit of the air conditioner of the type in which the air sucked from the side through the container is blown upward through the first space outside each motor support base and the second space between the pair of motor support bases, the pair of motor support An air flow passing through the second space according to the flow of air passing through the first space is formed uniformly on each upper surface of the base with an upward slope from the inner surface to the outer surface of the motor support base. and with a guide capable rectifying member in the outer diameter direction of the outdoor fan, the rectifying member is formed of a vertical plate portion extending upward along the outer surfaces of the motor support table, each motor support Characterized in that from said inner surface having an inclined plate portion extending upward toward the upper end of the vertical plate portion.

Also, the motor, the pair of fixed via a motor support base of the stay disposed on the upper surface, the rectifying member, the over the motor support table in the longitudinal direction on both sides of the stay is disposed integrally In addition, it may be configured to have a notch that exposes the stay upward.

Further, the motor support base is formed uniformly on the lower surface of each of the pair of motor support bases with an upward inclination from the inner surface to the outer surface of the motor support base, and is sucked from the side through the heat exchanger. It is good also as a structure provided with the upstream rectification | straightening member which guides the air which reaches the whole lower surface part of this to the outer-diameter direction of the said outdoor fan.
In addition, by providing the rectifying member and the upstream rectifying member, the pair of motor support bases are each formed with a substantially rhombus rectifying portion in a sectional view, and the upper end portion of the rectifying portion is on the downstream side. The structure which orient | assigns outward and upward may be sufficient.

  ADVANTAGE OF THE INVENTION According to this invention, ventilation resistance can be reduced in the outdoor unit of an air conditioning apparatus.

It is sectional drawing of the air conditioning apparatus which concerns on one embodiment of this invention. It is a cross-sectional view similarly. It is a perspective view which shows the support structure of a fan motor. It is sectional drawing which shows an air blower. It is sectional drawing which shows an air blower. It is sectional drawing of the motor support stand to which the upstream rectification member and the downstream rectification member were attached. It is a perspective view of an upstream rectification member. It is a perspective view of a downstream baffle member. It is a perspective view which shows the rectification | straightening part of 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The air conditioner according to this configuration includes an outdoor unit 10 and an indoor unit (not shown), and performs a cooling operation and a heating operation by flowing a refrigerant through a refrigerant circuit connected by a refrigerant pipe. The outdoor unit 10 is installed outside, exchanges heat with outdoor air, condenses the refrigerant during the cooling operation and releases heat to the outside air, and evaporates the refrigerant during the heating operation and takes in heat from the outside air. In addition, the directions such as up and down and left and right described below indicate directions when the outdoor unit 10 is viewed from the front side in a state where the outdoor unit 10 is installed.

FIG. 1 is a side sectional view of the outdoor unit 10, and FIG. 2 is a top view showing an internal configuration of the outdoor unit 10. The outdoor unit 10 includes a unit case (housing) 11 having a substantially rectangular parallelepiped box shape. The unit case 11 includes a bottom plate 12, struts 14 extending vertically from four corners of the bottom plate 12, and a front panel 15 (see FIG. 2).
On the bottom plate 12, as shown in FIG. 2, a heat exchanger 21 formed by being bent into a substantially U-shape when viewed from above is disposed, and an upper portion of the heat exchanger 21 is arranged as shown in FIG. A blower (outdoor fan) 22 is disposed. As shown in FIG. 2, the heat exchanger 21 constitutes a side surface portion of the unit case 11, and is arranged from the left side surface of the unit case 11 along the back surface and the right side surface.
As shown in FIG. 1, the air blower 22 includes a fan motor (motor) 23 disposed above the heat exchanger 21 and a propeller fan 24 attached to a motor shaft 51 of the fan motor 23. Is done.

FIG. 3 is a perspective view showing a support structure of the fan motor 23. FIG. 3 shows a state where a rectifying unit 60 (FIG. 4) described later is not attached.
On the upper surface of the heat exchanger 21, an upper frame 16 formed in a frame shape along the U-shape of the heat exchanger 21 is provided. As shown in FIG. 3, the upper frame 16 includes plate-shaped frame plates 16A, 16B, and 16C provided along the upper surfaces of the left side surface, the back surface, and the right side surface of the U-shaped heat exchanger 21, and the frame plate. And a connecting plate 16D for connecting the front ends of 16A and 16C. The four corners of the upper frame 16 are connected to the columns 14.
Between the frame plate 16B and the connecting plate 16D, a pair of motor support bases 17 and 17 extending substantially parallel to the frame plates 16A and 16C are spanned, and the fan motor 23 is fixed to the motor support bases 17 and 17. ing.

The fan motor 23 includes a columnar main body 52 and a motor shaft 51 (FIG. 1) that extends upward from the main body 52 and supports the propeller fan 24. The propeller fan 24 includes a resin hub 45 and a plurality of blades 46, 46... Integrally formed at predetermined intervals with a predetermined blade angle on the outer periphery of the hub 45.
The main body 52 is formed with a heat dissipating fin 53 on the outer peripheral portion and a pair of attachment stay pieces (stays) 54 extending substantially horizontally along the outer peripheral portion. The attachment stay pieces 54 and 54 are disposed so as to sandwich the main body portion 52 from the outside, and are provided in parallel to each other.
In the fan motor 23, the main body 52 is disposed between the motor support bases 17 and 17, and the mounting stay pieces 54 and 54 are placed on the motor support bases 17 and 17, and the mounting stay pieces 54 and 54 are moved upward. Are fastened and fixed to the motor support bases 17 and 17 by a plurality of fixing bolts 55 penetrating therethrough. Further, the fan motor 23 is disposed in the middle portion in the longitudinal direction of the motor support bases 17 and 17.

  As shown in FIG. 1, a cylindrical bell mouth 25 that guides the air on the suction side of the propeller fan 24 to the blowing side is provided around the propeller fan 24. The blowing mouth 25A of the bell mouth 25 has a propeller opening 25A. The fan 24 is covered with a fan guard 27 (FIG. 4) that prevents the human body from coming into contact with the fan 24. A decorative panel (not shown) is provided around the bell mouth 25 via a heat insulating material 26 such as foamed polystyrene. The propeller fan 24 is disposed so as to be positioned at the center of the U-shaped heat exchanger 21.

  When the propeller fan 24 is rotationally driven by the fan motor 23, as shown by the arrow X in the drawing around the outdoor unit 10, more specifically, the left side, the back side, and the right side excluding the front surface of the unit case 11. Outside air is sucked into the unit case 11 from the surface side, and is discharged outside through the blowout opening 25 </ b> A of the bell mouth 25 provided on the upper surface portion of the unit case 11. That is, the outdoor unit 10 is configured as an upper surface blowing type that blows out air after heat exchange from the upper surface.

In the unit case 11, a compressor (not shown), an accumulator 31, an oil separator 32, and a receiver tank 33 constituting a part of the refrigerant circuit are provided on the bottom plate 12, and a four-way valve (not shown). And refrigerant circuit components such as a valve body such as an expansion valve (not shown) are connected by piping. One end side of the piping of these refrigerant circuit components is connected to the indoor unit via the heat exchanger 21, and the other end side of the piping of the refrigerant circuit components is connected to the indoor unit. A circulating refrigerant circuit is configured. The accumulator 31 is located at the approximate center of the bottom plate 12 below the fan motor 23.
Further, in this configuration, the compressor is disposed on the front side of the unit case 11, and an electrical box 34 in which various electrical units such as a control board for controlling the air conditioner are disposed in an upper space of the compressor. The For this reason, by removing the front panel 15, the operator can easily perform maintenance work on the components in the unit case 11 from the front side. Reference numeral 35 denotes a cover plate that is provided above the compressor so as to prevent raindrops from being directly applied to the compressor.

4 and 5 are cross-sectional views showing the blower 22.
As shown in FIGS. 4 and 5, the motor support bases 17 and 17 are provided with a rectification unit 60 that reduces the ventilation resistance of the airflow that flows around the motor support base 17. An upstream rectifying member 61 positioned upstream of the motor support bases 17 and 17 and a downstream rectifying member (rectifying member) 81 positioned downstream of the motor support bases 17 and 17 are configured. The upstream rectifying member 61 and the downstream rectifying member 81 are made of a metal plate material.
In the present embodiment, since the motor support bases 17 and 17 are provided at substantially the center of the opening 16E of the frame-shaped upper frame 16, the air passing through the opening 16E of the upper frame 16 is supplied to each motor support base 17. , 17 and the air passing through the first space P and the air passing through the second space Q between the pair of motor support bases 17, 17, that is, inside the pair of motor support bases 17, 17.

FIG. 6 is a cross-sectional view of the motor support 17 to which the upstream rectifying member 61 and the downstream rectifying member 81 are attached. Since the motor support base 17, the upstream rectifying member 61, and the downstream rectifying member 81 are provided symmetrically with respect to the fan motor 23, the right side will be described here for simplification of description. .
As shown in FIGS. 4 to 6, the motor support base 17 is a bar having a U-shaped cross section, and is arranged on the upper frame 16 so that the U-shaped opening 71 faces downward. . The motor support 17 includes a substantially horizontal upper plate portion (upper surface portion) 72 on which the mounting stay pieces 54 and 54 are placed, and an outer plate portion (outer surface) extending downward from the outer end in the width direction of the upper plate portion 72. 73 and an inner plate portion (inner surface) 74 extending downward from the inner end of the upper plate portion 72 in the width direction. The motor support bases 17 and 17 are metal channel materials and can be easily obtained.

FIG. 7 is a perspective view of the upstream rectifying member 61.
The upstream rectifying member 61 is formed in a rod shape having a substantially V-shaped cross section, and extends vertically downward along the inner plate portion 74 of the motor support base 17, and the lower end of the vertical plate portion 62. And an inclined plate portion 63 that extends upward toward the lower end of the outer plate portion 73 of the motor support base 17.
The upstream rectifying member 61 is disposed so as to cover the opening 71 of the lower surface portion of the motor support base 17 from below, and extends over the substantially entire length of the motor support base 17 so as to overlap the substantially entire length of the opening 16E of the upper frame 16. It is provided with one. The cross-sectional shape of the upstream rectifying member 61 is uniform over its entire length.

  At the intermediate portion in the longitudinal direction of the upstream side rectifying member 61, the upper ends of the vertical plate portion 62 and the inclined plate portion 63 protrude upward and come into contact with the outer surfaces of the outer plate portion 73 and the inner plate portion 74 of the motor support base 17. Plate portions 64 and 64 are respectively formed. Further, the portions where the fixed plate portions 64, 64 are not formed at the upper ends of the vertical plate portion 62 and the inclined plate portion 63 are the contact portions 65 that contact the outer surfaces of the outer plate portion 73 and the lower end portion of the inner plate portion 74. It has become.

The upstream rectifying member 61 is fastened and fixed to the outer plate portion 73 and the inner plate portion 74 by a plurality of bolts 66 inserted into the holes 64 </ b> A of the fixing plate portions 64 and 64.
When the upstream side rectifying member 61 is fixed to the motor support base 17, it has a substantially triangular convex shape that tapers downward, and the V-shaped apex portion 61A protrudes toward the upstream side of the air flow. The outer surface portion of the inclined plate portion 63 is an inclined surface 63A that is inclined upward from the apex portion 61A toward the outer surface side of the unit case 11. The inclined surface 63 </ b> A is uniformly formed with an upward inclination from the inner plate portion 74 to the outer plate portion 73 of the motor support base 17.

  The apex portion 61 </ b> A of the upstream side rectifying member 61 is located on the fan motor 23 side in the width direction of the motor support 17 and is located at the lower end of the vertical plate portion 62. For this reason, the air that rises from below the upstream side rectifying member 61 and reaches the entire lower surface portion of the motor support base 17 strikes the inclined plate portion 63 and is rectified like an air flow W1, and along the inclined surface 63A, It flows obliquely upward toward the outer side surface and flows in the outer diameter direction of the propeller fan 24. That is, for example, as compared with the configuration in which the apex portion of the upstream rectifying member is located in the center in the width direction of the motor support base 17, in the present embodiment, more airflow is caused to follow the inclined surface 63A. It can flow to the outer surface side of the unit case 11. For this reason, more airflow can be sent to the outer diameter part side where the rotational speed is high in the propeller fan 24, and the air volume can be improved.

FIG. 8 is a perspective view of the downstream rectifying member 81.
As shown in FIGS. 5, 6, and 8, the downstream rectifying member 81 is formed in a bar shape having a substantially V-shaped cross section, and is substantially vertically upward along the outer plate portion 73 of the motor support base 17. After extending along the inner plate portion 74, the vertical plate portion 82 extends, and then the inclined plate portion 83 bends toward the upper end of the vertical plate portion 82 and extends upward.
The downstream-side rectifying member 81 is disposed so as to cover the upper plate portion 72 of the upper surface of the motor support base 17 from above, and both end sides of the motor support base 17 excluding the central portion where the stay pieces 54 and 54 of the fan motor 23 are provided. Are provided as a pair.

  At the intermediate portion in the longitudinal direction of the downstream side rectifying member 81, the lower end of the vertical plate portion 82 and the inclined plate portion 83 protrudes downward and comes into contact with the outer surfaces of the inner plate portion 74 and the outer plate portion 73 of the motor support base 17. Plate portions 84 and 84 are respectively formed. Further, the portions where the fixed plate portions 84, 84 are not formed at the lower ends of the vertical plate portion 82 and the inclined plate portion 83 are the contact portions 85 that are in contact with the outer surfaces of the upper end portions of the inner plate portion 74 and the outer plate portion 73. It has become.

The downstream rectifying member 81 is fastened and fixed to the outer plate portion 73 and the inner plate portion 74 by bolts 86 inserted into the holes 84 </ b> A of the fixing plate portions 84 and 84.
When the downstream rectifying member 81 is fixed to the motor support 17, the downstream rectifying member 81 has a substantially triangular convex shape that tapers upward, and the V-shaped apex 81 </ b> A protrudes toward the downstream side of the air flow. . The outer surface portion of the inclined plate portion 83 is an inclined surface 83A that is uniformly formed with an upward inclination from the inner plate portion 74 to the outer plate portion 73 of the motor support base 17 toward the apex portion 81A.

  The apex portion 81 </ b> A of the downstream rectifying member 81 is located on the outer surface side of the unit case 11 in the width direction of the motor support base 17, and is located at the upper end of the vertical plate portion 82. The air blown upward from the upstream side through the motor support 17 is rectified by the downstream rectifying member 81 when passing through the outer first space P and the inner second space Q. More specifically, the air passing through the second space Q is rectified like an air flow W2 by being drawn outside by the air flow flowing through the first space P, and outside the unit case 11 along the inclined surface 83A. Flows diagonally upward toward the side.

  That is, in the first embodiment, air turbulence occurs above the upper plate portion 72 as compared to the case where the downstream rectifying member 81 is not provided on the upper plate portion 72 side of the motor support base 17. And the ventilation resistance can be reduced. Further, in the first embodiment, as compared with a configuration in which, for example, the apex portion of the downstream side rectifying member is located in the center in the width direction of the motor support base 17, more airflow is generated by the inclined surface 83 </ b> A. It can be flowed to the outer surface side. For this reason, more airflow can be sent to the outer-diameter part side with the high rotational speed of the propeller fan 24, and an air volume can be improved.

As shown in FIG. 6, by attaching the upstream rectifying member 61 and the downstream rectifying member 81, a rectifying unit 60 is formed on the motor support base 17, and the rectifying unit 60 has a substantially diamond shape in a cross-sectional view. Is formed. The lengths of the vertical plate portion 62, the inclined plate portion 63, the inclined plate portion 83, and the vertical plate portion 82, which are the four plate portions that can be seen in the sectional view of the rectifying portion 60, are formed to be substantially equal.
The rectifying unit 60 is disposed to be inclined upward and outward so that a straight line L (FIG. 6) passing through the apex portion 61 </ b> A and the apex portion 81 </ b> A is inclined upward on the outer surface side of the unit case 11.

When the propeller fan 24 is rotated by the fan motor 23, the air around the outdoor unit 10 is sucked into the unit case 11 through the heat exchanger 21, and then bent upward and flows to the blower 22 side. The air is blown upward from the blowout opening 25A. At this time, the airflow flowing around the motor support 17 is rectified so as to flow upward and outward by the inclined surfaces 63A and 83A of the rectifying unit 60, and a large amount of air flows toward the outer diameter portion of the propeller fan 24. Flowing. For this reason, it is possible to prevent the airflow flowing around the motor support base 17 from colliding with the surface of the motor support base 17 at a substantially right angle or flowing in a large amount toward the fan motor 23 side. It can flow to the fan 24.
Further, since the lengths of the vertical plate portion 62, the inclined plate portion 63, the inclined plate portion 83, and the vertical plate portion 82 are substantially equal, the inner air flowing through the second space Q along the vertical plate portion 62 and the inclined plate portion 83. The passing distance between the flow and the outside air flow flowing through the first space P along the inclined plate portion 63 and the vertical plate portion 82 can be made substantially equal. For this reason, disturbance of the air flow can be prevented and the ventilation resistance of the rectifying unit 60 can be reduced.

  As described above, according to the first embodiment to which the present invention is applied, the fan motor 23 of the blower 22 is supported on the pair of motor support bases 17, 17, and the unit case 11 is supported by the blower 22. The air sucked from the side through the inner heat exchanger 21 is blown upward through the first space P outside the motor support bases 17, 17 and the second space Q between the pair of motor support bases 17, 17. Are formed uniformly on the upper plate portion 72 of each of the motor support bases 17 and 17 from the inner plate portion 74 to the outer plate portion 73 of the motor support bases 17 and 17 through the first space P. Since the downstream rectifying member 81 is provided so that the air flow through the second space Q can be guided in the outer diameter direction of the blower device 22 according to the air flow, the air passing through the second space Q In the outer diameter direction Succoth can, it is possible to reduce the ventilation resistance.

Further, the downstream rectifying member 81 includes a vertical plate portion 82 extending upward along the outer plate portion 73 of each motor support base 17, 17, and the vertical plate portion 82 from the inner plate portion 74 of each motor support base 17, 17. And the vertical plate 82 can rectify air passing through the first space P, and the inclined plate 83 can rectify air passing through the second space Q. Air disturbance on the downstream side of each motor support base 17, 17 can be prevented, and ventilation resistance can be reduced.
Moreover, since the air which reaches the whole lower surface part of the motor support bases 17 and 17 can be guided to the outer diameter direction of the blower 22 by the upstream side rectifying member 61 on the lower surface parts of the motor support bases 17 and 17, the ventilation resistance can be reduced. .

  Furthermore, by providing the downstream side rectifying member 81 and the upstream side rectifying member 61, the pair of motor support bases 17 and 17 are formed with a substantially rhombus rectifying unit 60 in a sectional view, respectively, and the upper end of the rectifying unit 60 Since the apex 81A is directed outward and upward toward the downstream side, air can be guided in the outer diameter direction of the blower 22 by the rectifying unit 60, and the ventilation resistance can be reduced. Moreover, since the rectification | straightening part 60 is a rhombus and the length of the inner side and the outer side of the rectification | straightening part 60 becomes substantially equal, ventilation resistance can be reduced.

In addition, the said 1st Embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said 1st Embodiment.
In the first embodiment, the rectifying unit 60 has been described as including the upstream rectifying member 61 and the downstream rectifying member 81, but the present invention is not limited to this. Absent. The rectifying unit 60 may be configured by only the downstream rectifying member 81 without providing the upstream rectifying member 61. In this case, the U-shaped opening 71 is preferably closed by a lid member or the like. Moreover, you may provide the downstream rectification | straightening member 81 in the upper surface of a motor support stand with a rectangular cross section.

[Second Embodiment]
Hereinafter, a second embodiment to which the present invention is applied will be described with reference to FIG. In the second embodiment, parts that are configured in the same manner as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
In the first embodiment, the downstream side rectifying members 81 and 81 have been described as being provided as a pair at both ends of the motor support base 17 excluding the central portion where the stay pieces 54 and 54 of the fan motor 23 are provided. However, in the second embodiment, the downstream rectifying member 281 is integrally provided without being divided.

FIG. 9 is a perspective view illustrating the rectifying unit 260 according to the second embodiment.
As shown in FIG. 9, the motor support bases 17 and 17 are provided with a rectifying unit 260 that reduces the ventilation resistance of the airflow that flows around the motor support base 17, and the rectifying unit 260 includes the upstream side rectifying member 61, And the downstream rectification | straightening member 281 which covers the upper board part 72 is provided. The downstream rectifying member 281 includes a vertical plate portion 82 and an inclined plate portion 83.
The downstream rectifying member 281 is configured such that the pair of downstream rectifying members 81, 81 of the first embodiment are coupled by a plate portion 286 formed so as to extend the vertical plate portion 82 in the longitudinal direction. It is integrally formed. A notch portion 287 is formed in the middle portion in the longitudinal direction of the downstream flow regulating member 281, and the end portions of the stay pieces 54 and 54 and the respective fixing bolts 55 are exposed upward from the notch portion 287. ing.

  According to the second embodiment to which the present invention is applied, the fan motor 23 is fixed via the stay pieces 54 and 54 disposed on the upper plate portion 72 of the motor support bases 17 and 17, and each downstream side rectification is performed. The member 281 is disposed integrally on both sides of the stay pieces 54 and 54 in the longitudinal direction of the motor support bases 17 and 17 and has a notch 287 that exposes the stay pieces 54 and 54 upward. The side straightening member 281 is integrally provided to simplify the structure, and the stay pieces 54 and 54 are exposed from the cutout portion 287, so that the stay piece can be connected via the cutout portion 287 without removing the downstream flow straightening member 281. The fan motor 23 can be easily attached and detached by accessing 54 and 54, and the workability is good.

10 Outdoor unit 11 Unit case (frame)
17, 17 Motor support 21 Heat exchanger 22 Blower (outdoor fan)
23 Fan motor (motor)
54, 54 Mounting stay piece (stay)
60, 260 Rectifier 61 Upstream rectifier 71 Opening 72 Upper plate (upper surface)
73 Outer plate (outer surface)
74 Inner plate (inner surface)
81, 281 Downstream rectifying member (rectifying member)
81A Vertex (upper end of rectification unit)
287 Notch P 1st space Q 2nd space

Claims (4)

A pair of motor support bases are arranged on the upper part of the housing, the motors of the outdoor fans are supported on the pair of motor support bases, and the air sucked from the side through the heat exchanger in the casing by the outdoor fans, In an outdoor unit of an air conditioner that blows upward through a first space outside the motor support and a second space between the pair of motor supports, the motor support is provided on each upper surface of the pair of motor supports. Uniformly formed with an upward slope from the inner surface to the outer surface of the base, and guides the air flow through the second space in the outer radial direction of the outdoor fan according to the air flow through the first space. Possible with a rectifying member ,
The rectifying member includes a vertical plate portion extending upward along the outer surface of each motor support base, and an inclined plate portion extending upward from the inner surface side of each motor support base toward the upper end of the vertical plate portion. An outdoor unit of an air conditioner characterized by that. The motor is fixed via a stay disposed on the upper surfaces of the pair of motor support bases, and the rectifying member is integrally disposed over both sides of the stay in the longitudinal direction of the motor support base, outdoor unit of an air conditioner according to claim 1, characterized in that it has a cutout portion for exposing the stay upwards. The lower surface of each of the pair of motor support bases is uniformly formed with an upward inclination from the inner surface to the outer surface of the motor support base, and is sucked from the side through the heat exchanger to be the lower surface of the motor support base. The outdoor unit of the air conditioner according to claim 1 or 2 , further comprising an upstream rectifying member that guides air reaching the entire area in an outer diameter direction of the outdoor fan. By providing the rectifying member and the upstream rectifying member, the pair of motor support bases are each formed with a substantially rhombus rectifying portion in a sectional view, and the upper end portion of the rectifying portion is directed toward the downstream side. The outdoor unit of an air conditioner according to claim 3 , wherein the outdoor unit is directed outward.

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