JP2006084050A - Refrigeration equipment outdoor unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor machine of a refrigeration device miniaturized in its depth direction. <P>SOLUTION: This outdoor machine 1 of the refrigeration device comprises a heat exchanging part 130a, an axial flow fan rotor 40, and a fan motor main body 39. The heat exchanging part 130a is expanded along a first face as a face orthogonal to the depth direction Y. The axial flow fan rotor 40 has a first rotating shaft L along the depth direction Y. The fan motor main body 39 is mounted to rotate and drive the axial flow fan rotor 40. The fan motor main body 39 is mounted in a state of being partially overlapped to the heat exchanging part 130a when it is observed from a side part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an outdoor unit for a refrigeration apparatus.

Conventionally, there is an outdoor unit 503 of an air conditioning apparatus (refrigeration apparatus) as shown in FIGS. 17 and 18. In this outdoor unit 503, as shown in FIG. 18, when the fan motor 39 is viewed from the side, between the rear heat exchange part 30 a spreading on the rear surface of the outdoor heat exchanger 30 and the propeller fan rotor 40. Is arranged.
JP-A-5-312352

By the way, in recent years, there is a case where the installation space of the outdoor unit cannot be sufficiently taken, and there is a demand for downsizing the outdoor unit in the depth direction.
The subject of this invention is providing the outdoor unit of the freezing apparatus compactized to the depth direction.

  The outdoor unit of the refrigeration apparatus according to the first aspect includes a heat exchange unit, an axial fan rotor, and a fan motor main body. A heat exchange part spreads along the 1st surface which is a surface orthogonal to the depth direction. The axial fan rotor has a first rotation axis along the depth direction. The fan motor main body is provided for rotationally driving the axial fan rotor. The fan motor main body is arranged so that at least a part thereof overlaps the heat exchange part when viewed from the side.

  In a conventional outdoor unit of a refrigeration apparatus, the fan motor main body is disposed between the heat exchange unit and the fan rotor when viewed from the side. However, in the outdoor unit of this refrigeration apparatus, the fan motor main body is arranged so that at least a part thereof overlaps the heat exchange part when viewed from the side. For this reason, the outdoor unit of this refrigeration apparatus is at least the distance from the rear end of the fan motor main body in the conventional outdoor unit of the refrigeration apparatus to the front surface of the heat exchanging unit, at the rear of the fan motor main body in the outdoor unit of the conventional refrigeration apparatus. It is possible to reduce the size in the depth direction by the length from the end to the rear surface of the heat exchange unit.

The outdoor unit of the refrigeration apparatus according to the second invention is the outdoor unit of the refrigeration apparatus according to the first invention, and the heat exchange unit has a fan motor main body insertion space. In the fan motor main body insertion space, at least a part of the fan motor main body can be inserted. When viewed from the front, the fan motor main body insertion space may be provided inside the heat exchange unit or may be provided at the end.
In the outdoor unit of the refrigeration apparatus, the heat exchange unit has a fan motor main body insertion space. For this reason, the outdoor unit of this refrigeration apparatus can be made compact in the depth direction regardless of the arrangement of the heat exchange section.

  The outdoor unit of the refrigeration apparatus according to the third invention is the outdoor unit of the refrigeration apparatus according to the first or second invention, wherein the first rotating shaft is an extension of the second rotating shaft that is the rotating shaft of the fan motor main body. Not on the line. Therefore, the outdoor unit of the refrigeration apparatus further includes a rotational power transmission mechanism that transmits rotational power generated in the fan motor main body to the axial fan rotor. The “rotational power transmission mechanism” referred to here is, for example, a gear drive mechanism or a belt drive mechanism.

  In the outdoor unit of this refrigeration apparatus, the first rotating shaft is not on the extended line of the second rotating shaft that is the rotating shaft of the fan motor main body. With this situation, the outdoor unit of the refrigeration apparatus is further provided with a rotational power transmission mechanism. For this reason, in the outdoor unit of the refrigeration apparatus, the fan motor main body can be freely arranged as long as the fan motor main body is arranged so as to overlap at least a part of the heat exchange part when viewed from the side. Therefore, in the outdoor unit of the refrigeration apparatus, for example, the fan motor main body can be arranged in a machine room in which a compressor or the like is arranged.

An outdoor unit of a refrigeration apparatus according to a fourth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the first or second aspect of the present invention, and the axial fan rotor has a boss portion. The boss portion is formed in a cylindrical shape along the depth direction so as to enclose at least a part of the fan motor main body.
In the conventional outdoor unit of a refrigeration apparatus, even if the axial fan rotor has a boss portion having an inner diameter larger than the outer diameter of the fan motor main body, the fan motor main body is attached to the boss portion of the axial fan rotor. It was never inserted. However, in the outdoor unit of the refrigeration apparatus, at least a part of the fan motor main body is inserted into the boss portion of the axial fan rotor. For this reason, the outdoor unit of this refrigeration apparatus can be made more compact in the depth direction.

The outdoor unit of the refrigeration apparatus according to the first aspect of the present invention is a fan motor main body in the outdoor unit of the conventional refrigeration apparatus, at least a distance from the rear end of the fan motor main body in the conventional outdoor unit of the refrigeration apparatus to the front surface of the heat exchange unit The distance from the rear end to the rear surface of the heat exchange unit can be reduced in the depth direction.
The outdoor unit of the refrigeration apparatus according to the second invention can be made compact in the depth direction regardless of the arrangement of the heat exchange unit.

In the outdoor unit of the refrigeration apparatus according to the third aspect of the invention, the fan motor main body can be freely arranged as long as the fan motor main body is arranged so as to overlap at least a part of the heat exchanging portion when viewed from the side. . Therefore, in the outdoor unit of the refrigeration apparatus, for example, the fan motor main body can be arranged in a machine room in which a compressor or the like is arranged.
The outdoor unit of the refrigeration apparatus according to the fourth invention can be further compacted in the depth direction.

<First Embodiment>
In FIG. 1, the external appearance of the air conditioning apparatus 1 which concerns on 1st Embodiment of this invention is shown.
The air conditioner 1 is a separate type air conditioner, and includes a ceiling-buried indoor unit 2 that is buried in the back of the indoor ceiling and an outdoor unit 3 that is installed outdoors.
An indoor heat exchanger is housed in the indoor unit 2, and an outdoor heat exchanger is housed in the outdoor unit 3, and each heat exchanger is connected by a refrigerant pipe 4 to form a refrigerant circuit. Yes.

[Configuration outline of refrigerant circuit of air conditioner]
The structure of the refrigerant circuit of the air conditioning apparatus 1 is shown in FIG. This refrigerant circuit mainly includes the indoor heat exchanger 20, the accumulator 31, the compressor 32, the four-way switching valve 33, the outdoor heat exchanger 130, and the electric expansion valve 34.
The indoor heat exchanger 20 provided in the indoor unit 2 performs heat exchange with the air that comes into contact therewith. In addition, the indoor unit 2 is provided with a centrifugal blower 23 for sucking room air and passing the air through the indoor heat exchanger 20 to discharge the air into the room. In this embodiment, the centrifugal blower 23 is a turbo fan, and includes a fan motor 22 provided in the center of the top plate of the main body casing, and an impeller 21 that is connected to the fan motor 22 and is driven to rotate. Yes. The centrifugal blower 23 sucks room air into the impeller 21 and blows it out to the outer peripheral side of the impeller 21.

  The outdoor unit 3 is connected to a compressor 32, a four-way switching valve 33 connected to the discharge side of the compressor 32, an accumulator 31 connected to the suction side of the compressor 32, and a four-way switching valve 33. An outdoor heat exchanger 130 and an electric expansion valve 34 connected to the outdoor heat exchanger 130 are provided. The electric expansion valve 34 is connected to the pipe 41 via the filter 35 and the liquid closing valve 36, and is connected to one end of the indoor heat exchanger 20 via the pipe 41. The four-way switching valve 33 is connected to the pipe 42 via the gas closing valve 37 and is connected to the other end of the indoor heat exchanger 20 via the pipe 42. The pipes 41 and 42 correspond to the refrigerant pipe 4 in FIG. Further, the outdoor unit 3 is provided with a propeller fan 38 for discharging the air after heat exchange in the outdoor heat exchanger 30 to the outside. In this propeller fan 38, the propeller fan rotor 40 is rotationally driven by a fan motor 39.

[Configuration of outdoor unit]
Here, details of the outdoor unit 3 will be described with reference to FIGS. 3, 4, 5, 6, and 7. FIG. 3 is a side perspective view of the outdoor unit 3 according to the first embodiment. FIG. 4 is an external perspective view of the outdoor heat exchanger 130 of the outdoor unit 3 according to the first embodiment. FIG. 5 is a partial front view of the outdoor heat exchanger 130 of the outdoor unit 3 according to the first embodiment. FIG. 6 is a side perspective view of the propeller fan 38 of the outdoor unit 3 according to the first embodiment. FIG. 7 is a front perspective view of the propeller fan 38 of the outdoor unit 3 according to the first embodiment. In these drawings, X is the width direction, Y is the depth direction, Z is the height direction, X1 is the right, X2 is the left, Y1 is the front, Y2 is the rear, Z1 is the upper, and Z2 is the lower. To do.

(1) Casing As shown in FIG. 3, the casing 50 includes a front panel 50b, an upper panel 50a, a lower panel 50f, a right side panel (not shown), and a left side panel (see FIG. 1). . There is no panel on the rear surface, and only the protective net 50e of the outdoor heat exchanger 30 is provided. As shown in FIGS. 1 and 3, the front panel 50 b is provided with a blow grill 50 c for discharging the air in the casing 50 to the outside of the casing 50. A member such as a drain pan (not shown) is disposed on the lower panel 50f. The right side panel is provided with a plurality of openings for sucking outdoor air into the casing 50.

(2) Machine room A machine room (not shown) is provided diagonally to the left of the outdoor unit 3 and partitioned by a partition plate, similarly to the conventional outdoor unit shown in FIG. This machine room mainly monitors and controls the compressor 32, the four-way switching valve 33, the accumulator 31, the electric expansion valve 34, the filter 35, the liquid closing valve 36, and the various operations of the indoor unit 2 and the outdoor unit 3 described above. An electrical component box or the like filled with electrical components to be stored is accommodated.

(3) Outdoor heat exchanger As shown in FIG. 4, the outdoor heat exchanger 130 includes a heat transfer tube 71 configured by connecting a plurality of hairpin-shaped tubes, and a plurality of heat transfer tubes 71 inserted therethrough. This is a cross fin tube type heat exchanger panel including the heat radiating fins 70. The outdoor heat exchanger 130 is formed by bending a single heat exchange panel so as to be substantially L-shaped when viewed from above, and is arranged along the rear surface and the right side surface of the casing 50. (Hereafter, in the outdoor heat exchanger 30, a portion provided along the rear surface of the casing 50 is referred to as a rear heat exchange portion 130a, and a portion provided along the right side surface of the casing 50 is referred to as a side heat exchange portion 130b. ). In this outdoor heat exchanger 130, two rows of heat transfer tubes 71 are provided (see FIG. 4). In each row, the heat transfer tube 71 is composed of a first heat transfer tube 71a and a second heat transfer tube 71b (see FIG. 5). The second heat transfer pipe 71b is formed and arranged so as to pass through the left X2 portion of the fan motor insertion space Sm (described later) (see FIG. 4) in the outdoor heat exchanger 130, and the first heat transfer pipe 71a is the other The outdoor heat exchanger 130 is formed and arranged so as to pass through (see FIG. 5). Then, as shown in FIGS. 3, 4, and 5, the rear heat exchange section 130a is provided with a square through hole that penetrates in the panel thickness direction. Since the length of the square side is designed to be larger than the outer diameter of the fan motor 39, the fan motor 39 can be inserted into the through hole (hereinafter referred to as the through hole). Fan motor insertion space Sm). In the state where the fan motor 39 is inserted into the fan motor insertion space Sm, there is a gap in the fan motor insertion space Sm, but the gap is filled by the gap filling member 65. Further, the length of the side surface heat exchanging portion 130b in the arrangement direction of the radiation fins 70 is shorter than that of the conventional outdoor heat exchanger (see FIG. 14) due to the thinning of the outdoor unit.

(4) Propeller Fan As shown in FIGS. 3 and 6, the propeller fan 38 mainly includes a fan motor 39, a rotation shaft 44 extending along the rotation axis of the fan motor 39, and a rotation shaft 44 at the rotation center O. Is composed of a propeller fan rotor 40 to which are coupled. As shown in FIG. 3, the propeller fan 38 is fixed by fixing the fan motor 39 to the fixed base 63 via a mounting bracket or the like.

  As shown in FIGS. 6 and 7, the propeller fan rotor 40 mainly includes a boss portion 40a and three wing portions 40b provided on the outer periphery of the boss portion 40a. The propeller fan rotor 40 is a resin molded product, and the boss portion 40a and the wing portion 40b are integrally formed. The boss portion 40a is mainly formed into a surface perpendicular to the rotation axis L from the outer periphery of the rotation shaft coupling portion 40c coupled to the rotation shaft 44 and the end of the rotation shaft coupling portion 40c opposite to the rotation shaft 44 insertion side. The front plate portion 40f extends in a circle around the rotation center O, and the cylindrical portion 40g extends along the rotation axis L from the outer peripheral portion of the front plate portion 40f toward the opposite side of the rotation shaft 44 in the insertion direction. . Note that the rotary shaft coupling portion 40c, the front plate portion 40f, and the cylindrical portion 40g are also integrally formed of resin. Further, the front plate portion 40f is provided with four vent holes 40e penetrating in the plate thickness direction, and a plurality of protrusion portions 40d protruding toward the rotation axis L are provided on the inner periphery on the opening side of the cylindrical portion 40g. It has been. In the cross-sectional view of the protrusion 40d taken along a plane orthogonal to the rotation axis L, the length from the rotation center O to the tip of the protrusion 40d is designed to be larger than the outer radius of the fan motor 39. Yes.

The length of the rotating shaft 44 is adjusted so that the fan motor 39 is accommodated in the boss portion 40a of the propeller fan rotor 40 by a predetermined length.
When the fan motor 39 is energized, the propeller fan rotor 40 rotates and an air flow is generated in the direction along the rotation axis L. As a result, outdoor air is supplied from the rear side to the outdoor heat exchanger 130 (see the white arrow Fs in FIG. 3), and after exchanging heat with the refrigerant flowing through the heat transfer tubes 71 of the outdoor heat exchanger 130, the bell mouth 45 Through the blow grill 50c of the front panel 50b (see white arrow Fe in FIG. 3).

[Features of outdoor unit of air conditioner]
(1)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, a fan motor insertion space Sm is provided in the rear heat exchange part 130a, and a fan motor 39 is inserted in the fan motor insertion space Sm. In the outdoor unit 3 of the air conditioner 1, a part of the fan motor 39 is inserted into the boss portion 40 a of the propeller fan rotor 40. For this reason, the outdoor unit 3 of the air conditioner 1 is compacted in the depth direction Y of the outdoor unit of the conventional refrigeration apparatus (the actual outdoor unit can be compacted by about 20%).

(2)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, the front plate portion 40f of the boss portion 40a is provided with four vent holes 40e penetrating in the plate thickness direction, and the cylindrical portion 40g of the boss portion 40a. A plurality of projecting portions 40 d projecting toward the rotation axis L are provided on the inner periphery of the opening side. For this reason, in the outdoor unit 3 of the air conditioner 1, an air flow is generated around the fan motor 39, and the fan motor 39 is effectively cooled.

(3)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, a gap is generated in the fan motor insertion space Sm in a state where the fan motor 39 is inserted in the fan motor insertion space Sm. Packed. For this reason, in the outdoor unit 3 of this air conditioning apparatus 1, it is preventing that the ventilation rate to the outdoor heat exchanger 130 reduces.

(4)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, the air that has passed through the rear heat exchange unit 130 a does not directly contact the fan motor 39. For this reason, in the outdoor unit 3 of this air conditioning apparatus 1, the temperature rise of the fan motor 39 can be suppressed.
[Modification]
(A)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, a part of the fan motor 39 is inserted into the boss portion 40 a of the propeller fan rotor 40. However, when the length of the cylindrical portion of the boss portion in the rotational axis direction is larger than that of the fan motor 39, the entire fan motor 39 may be inserted into the boss portion.

(B)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, a plurality of protrusions 40d are provided on the inner periphery of the boss portion 40a on the opening side of the cylindrical portion 40g, but the opening side of the cylindrical portion 40g of the boss portion 40a is provided. An air flow may be generated around the fan motor 39 by providing a groove on the inner periphery of the fan motor 39.

(C)
Although not particularly mentioned in the outdoor unit 3 of the air conditioner 1 according to the first embodiment, in order to generate a larger amount of air flow around the fan motor 39, the opening side of the cylindrical portion 40g of the boss portion 40a is not provided. You may provide the air introduction member 40h (refer FIG. 8) in an edge part. The air introduction member 40h may be provided integrally with the boss portion 40a or the like, or may be bonded after being formed as a separate member.

(D)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, a fan motor insertion space Sm, which is a through-hole penetrating the rear heat exchange part 130a in the plate thickness direction, is provided in the rear heat exchange part 130a, and the fan motor is provided there. 39 was inserted. However, in order to make the outdoor unit 3 compact in the depth direction Y, a through hole is not necessarily required. For example, as shown in FIGS. 9 and 10, a recess Sm ′ is provided in the rear heat exchange part 131a of the outdoor heat exchanger 131 of the outdoor unit 3a, and the rear end portion of the fan motor 39 is inserted into the recess Sm ′. May be. In this outdoor heat exchanger 131, two rows of heat transfer tubes 71 are provided as in the outdoor heat exchanger 130 of the first embodiment. Of these two rows of heat transfer tubes 71, the row facing the fan motor 39. As shown in the first embodiment, only the heat transfer tube 71 is composed of the first heat transfer tube and the second heat transfer tube, and the other rows of the heat transfer tubes 71 are similar to the conventional outdoor heat exchanger, It is composed of one heat transfer tube 71. When the outdoor heat exchanger 131 adopts such a configuration, the fan motor 39 may be fixed to the fixed base 63 in the same manner as in the first embodiment, or the heat transfer tube 71 of the outdoor heat exchanger 131 or You may fix to a radiation fin.

(E)
In the outdoor unit 3 of the air conditioner 1 according to the first embodiment, a plurality of protrusions 40d are provided on the inner periphery of the boss portion 40a on the opening side of the cylindrical portion 40g. It may be provided radially on the outer periphery of.
Second Embodiment
Here, the air conditioning apparatus according to the second embodiment will be described. In the air conditioner according to the second embodiment, the outdoor heat exchanger is not provided with a fan motor insertion space (that is, the outdoor heat exchanger of the present embodiment has a length of the side surface heat exchanging portion in the radiating fin arrangement direction. Is an outdoor heat exchanger that is shorter than that of the side heat exchanger of the conventional outdoor heat exchanger), and the propeller fan is provided with a gear drive mechanism GR, except that the air according to the first embodiment It has almost the same configuration as the harmony device. Therefore, here, the explanation will focus on the propeller fan. This description will be made with reference to FIGS. 11, 12, and 13. FIG. FIG. 11 is a side perspective view of the outdoor unit 103 according to the second embodiment. FIG. 12 is a front perspective view of the outdoor unit 103 according to the second embodiment. FIG. 13 is an external perspective view of a helical gear employed in the propeller fan 138 of the outdoor unit 103 according to the second embodiment. In these drawings, X is the width direction, Y is the depth direction, Z is the height direction, X1 is the right, X2 is the left, Y1 is the front, Y2 is the rear, Z1 is the upper, and Z2 is the lower. To do.

  The propeller fan 138 employed in the outdoor unit 103 of the air conditioner according to the second embodiment mainly includes a fan motor 39, a first rotating shaft 44 extending along the rotation axis of the fan motor 39, and the rotation of the fan motor 39. The propeller fan rotor 140 having a rotation axis orthogonal to the axis, the second rotation shaft 168 extending along the rotation axis of the propeller fan rotor 140, and the rotation direction of the first rotation shaft 44 are bent 90 degrees and the propeller is passed through the second rotation shaft. A helical gear box 165 for rotating the fan rotor 140 and a bearing 166 supporting the second rotating shaft 168 are configured.

In the propeller fan rotor 140, four vent holes penetrating in the thickness direction are not provided in the front plate portion of the boss portion, and a protruding portion protruding toward the rotation shaft is provided on the inner periphery of the opening side of the cylindrical portion. It has the same configuration as the propeller fan rotor according to the first embodiment except that it is not provided.
One end of the second rotating shaft 168 is coupled to the rotating shaft coupling portion of the boss portion of the propeller fan rotor 140, and the other end is coupled to the first gear 165a of the helical gear 165c (see FIG. 13) in the helical gear box 165. The The helical gear box 165 is fixed to a fixed base (see FIG. 11).

  The fan motor 39 is the same fan motor as the fan motor according to the first embodiment. The fan motor 39 is disposed in the machine room 61 of the outdoor unit 103. Further, the fan motor 39 is disposed so as to overlap with the rear heat exchanger 230a of the outdoor heat exchanger 230 when viewed from the side. Further, the fan motor 39 is fixed by being tilted at a predetermined angle upward Z1 so that the rotation axis is orthogonal to the rotation axis of the propeller fan rotor 40.

The first rotation shaft 44 extends along the rotation axis of the fan motor 39 through an opening (not shown) of a partition plate 162 that partitions the machine chamber 61 from the fan motor 39 disposed in the machine chamber 61, and is a helical gear box. It is connected to the second gear 165b of 165c.
In such a propeller fan 138, when the fan motor 39 is energized, first, the first rotating shaft 44 rotates. Then, the rotation of the first rotation shaft 44 is transmitted to the second rotation shaft 168 by the helical gear 165c, and the second rotation shaft 168 rotates. At this time, the rotation direction is bent 90 degrees. The propeller fan rotor 140 is rotated by the rotation of the second rotating shaft 168.

[Features of outdoor unit of air conditioner]
In the outdoor unit 103 of the air conditioning apparatus according to the second embodiment, the fan motor 39 is disposed in the machine room 61. Further, the fan motor 39 is disposed so as to overlap with the rear heat exchanger 230a of the outdoor heat exchanger 230 when viewed from the side. The fan motor 39 is fixed at a predetermined angle so that the rotation axis is orthogonal to the rotation axis of the propeller fan rotor 140, and the first rotation shaft 44, the helical gear box 165, and the second rotation shaft. The propeller fan rotor 40 can be driven to rotate through 168. The outdoor unit 103 is made compact in the depth direction Y by the propeller fan 138 adopting such a structure. In addition, the outdoor unit 103 has a feature that the degree of freedom of arrangement of the fan motor 39 is high.

[Modification]
(A)
In the outdoor unit 103 of the air conditioner according to the second embodiment, the rotation direction of the first rotation shaft 44 is bent 90 degrees by the helical gear 165c, but the rotation direction of the first rotation shaft 44 is shown in FIG. The screw gear 165d may be bent at 90 degrees.

(B)
In the outdoor unit 103 of the air conditioner according to the second embodiment, the fan motor 39 can be disposed in the machine room 61 by adopting the gear drive mechanism GR. However, as shown in FIGS. 15 and 16, the fan motor 39 can be disposed in the machine room 61 even if the belt drive mechanism BL is employed.

Here, FIG. 15 is a side perspective view of the outdoor unit 203 according to the present modification. FIG. 16 is a front perspective view of the outdoor unit 203 according to this modification. In these drawings, X is the width direction, Y is the depth direction, Z is the height direction, X1 is the right, X2 is the left, Y1 is the front, Y2 is the rear, Z1 is the upper, and Z2 is the lower. To do.
The propeller fan 238 employed in the outdoor unit 203 mainly includes a fan motor 39, a first pulley shaft 244 extending along the rotation axis of the fan motor 39, and a propeller having a rotation axis parallel to the rotation axis of the fan motor 39. The pulley portion of the first pulley shaft 244 and the second pulley shaft 268 extending along the rotational axis of the fan rotor 140, the propeller fan rotor 140, and the opening (not shown) of the partition plate 162 that partitions the machine chamber 61 An annular belt 269 wound around the pulley portion of the pulley shaft 268 and two bearings 266 and 267 that support the second pulley shaft 268 are configured.

The propeller fan rotor 140 has the same configuration as the propeller fan rotor according to the second embodiment.
The second pulley shaft 268 is supported by two bearings 266 and 267, and one end thereof is coupled to the rotating shaft coupling portion of the boss portion of the propeller fan rotor 140.
The fan motor 39 is the same fan motor as the fan motor according to the second embodiment. The fan motor 39 is arranged so that the rotation axis is along the depth direction Y and the protruding side of the first pulley shaft 244 faces the front Y1. Further, the fan motor 39 is disposed so as to overlap with the rear heat exchanger 230a of the outdoor heat exchanger 230 when viewed from the side.

  In such a propeller fan 138, when the fan motor 39 is energized, the first pulley shaft 244 first rotates. Then, the rotation of the first pulley shaft 244 is transmitted to the second pulley shaft 268 by the annular belt 269, and the second pulley shaft 268 rotates. The propeller fan rotor 140 is rotated by the rotation of the second pulley shaft 268.

(C)
In the outdoor unit 203 of the air conditioner according to the second embodiment, the fan motor 39 is disposed in the machine room 61. However, the fan motor 39 is shown in the first embodiment and the modified example (D) of the first embodiment. As described above, it may be disposed in a through hole or a recess provided in the rear heat exchange part of the outdoor heat exchanger. At this time, the through hole and the recess may be inside the rear heat exchange part or at the end part.

  The outdoor unit of the refrigeration apparatus according to the present invention is characterized in that it is compact in the depth direction, and the restriction on the installation location of the outdoor unit of the refrigeration apparatus can be relaxed.

1 is an external perspective view of an air conditioner according to a first embodiment of the present invention. The block diagram of the refrigerant circuit of the air conditioning apparatus which concerns on 1st Embodiment of this invention. The side perspective view of the outdoor unit which concerns on 1st Embodiment of this invention. The external appearance perspective view of the outdoor heat exchanger of the outdoor unit which concerns on 1st Embodiment of this invention. The partial front view of the outdoor heat exchanger of the outdoor unit which concerns on 1st Embodiment of this invention. The side perspective view of the propeller fan of the outdoor unit which concerns on 1st Embodiment of this invention. The front perspective view of the propeller fan of the outdoor unit which concerns on 1st Embodiment of this invention. The side see-through | perspective view of the propeller fan of the outdoor unit which concerns on the modification (C) of 1st Embodiment. The side perspective view of the outdoor unit which concerns on the modification (D) of 1st Embodiment. The external appearance perspective view of the outdoor heat exchanger of the outdoor unit which concerns on the modification (D) of 1st Embodiment. The side perspective view of the outdoor unit which concerns on 2nd Embodiment of this invention. The front perspective view of the outdoor unit which concerns on 2nd Embodiment of this invention. The external appearance perspective view of the helical gear employ | adopted as the propeller fan of the outdoor unit which concerns on 2nd Embodiment of this invention. The external appearance perspective view of the screw gear which concerns on the modification (A) of 2nd Embodiment. The side perspective view of the outdoor unit which concerns on the modification (B) of 2nd Embodiment. The front perspective view of the outdoor unit which concerns on the modification (B) of 2nd Embodiment. The perspective view which shows the mode of the inside of the conventional outdoor unit. The side perspective view of the conventional outdoor unit.

Explanation of symbols

3, 3a, 103, 203 Outdoor unit 39 Fan motor (fan motor body)
40,140 propeller fan rotor (axial fan rotor)
40a Boss part 130a, 131a, 230a Rear heat exchange part (heat exchange part)
BL belt drive mechanism (rotational power transmission mechanism)
GL gear drive mechanism (rotational power transmission mechanism)
Sm, Sm 'Fan motor insertion space (Fan motor body insertion space)
Y depth direction

Claims (4)

A heat exchange section (130a, 131a, 230a) extending along a first surface that is a surface orthogonal to the depth direction (Y);
An axial fan rotor (40, 140) having a first rotation axis (L) along the depth direction;
A fan motor main body (39) for rotationally driving the axial fan rotor;
With
The fan motor main body is an outdoor unit (3, 3a, 103, 203) for a refrigeration apparatus, which is arranged so that at least a part thereof overlaps the heat exchange unit when viewed from the side. The heat exchange unit has a fan motor main body insertion space (Sm, Sm ′) that is a space in which at least a part of the fan motor main body can be inserted.
The outdoor unit of the refrigeration apparatus according to claim 1. The first rotating shaft is not on an extension line of the second rotating shaft that is the rotating shaft of the fan motor main body,
A rotational power transmission mechanism (GR, BL) for transmitting rotational power generated in the fan motor main body to the axial fan rotor;
The outdoor unit of the refrigeration apparatus according to claim 1 or 2. The axial fan rotor has a boss portion (40a) formed in a cylindrical shape along the depth direction so as to enclose at least a part of the fan motor main body.
The outdoor unit of the refrigeration apparatus according to claim 1 or 2.

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