WO2016151755A1 - Air conditioner - Google Patents

Abstract

An air conditioner is characterized by being provided with a pair of blowers (4), and a heat exchanger (3) disposed so as to surround an inner space (50) formed at the lower portion of the blowers (4), which serves as the upstream side of the blowers (4), and by being provided with an outdoor unit (90) that includes the heat exchanger (3), in which a pair of halves (30a, 30b), which are shaped symmetrically to one another and are disposed so as to respectively correspond to the blowers (4), are joined. The outdoor unit (90) has a wall surface that partitions the inner side of an inner space (50) at the side opposing the joint section of the halves (30a, 30b) and interposing the inner space (50), and has a first apparatus housing box (33), which is disposed so as to be close to the wall surface at a position facing the joint section of the halves (30a, 30b).

Description

Air conditioner

The present invention relates to an air conditioner.

Conventionally, as an outdoor unit of an air conditioner, one having a pair of blowers side by side on the upper surface of the main body of the outdoor unit and arranging heat exchangers on the front surface, both side surfaces, and the rear surface of the main body is known ( For example, see Patent Document 1). By the way, the heat exchanger of this outdoor unit is joined so that the open sides of the halves that are substantially U-shaped when viewed from the top face each other. According to this outdoor unit, it is possible to ensure a larger heat exchange surface of the outdoor heat exchanger than an outdoor unit in which a blower is attached to the front.

Japanese Patent No. 3710874

By the way, in an outdoor unit having a pair of blowers on the upper surface of the outdoor unit (for example, see Patent Document 1), air flows generated by two blowers in the outdoor unit are likely to interfere with each other. Specifically, when the propeller fans of a pair of blowers rotate, for example, counterclockwise (counterclockwise), two counterclockwise (counterclockwise) air in the main body according to the rotation direction of each propeller fan The swirling flow is generated. And in the central part of the main body of the outdoor unit, the flow of the two swirling flows collide with each other and collide with each other, and the blowing performance of the blower is lowered. Thereby, the energy saving performance of the outdoor unit is hindered.

Also, it is desirable to make the outdoor unit compact in order to reduce manufacturing costs and diversify installation locations. Therefore, it is conceivable to narrow the interval between the pair of blowers of the outdoor unit. However, if the interval between the blowers is narrowed, air interference in the main body further increases.

In addition, when the blower is driven, the outside air taken into the main body through the heat exchanger disposed on the outer periphery of the main body is exchanged with the refrigerant of the heat exchanger, and then blown up above the outdoor unit by the blower. It is done. That is, the inner space of the main body becomes an air path. For this reason, a device storage box such as an electric box disposed in the inner space of the main body causes ventilation resistance in the inner space of the main body, and the blowing performance of the blower is lowered. When the main body itself is made compact, the air passage becomes narrower, the ventilation resistance is further increased, and the energy saving performance is also lowered.
Therefore, in an air conditioner, what has the outdoor unit which is excellent in energy-saving performance and can achieve compactness is desired.

Therefore, an object of the present invention is to provide an air conditioner including an outdoor unit that is excellent in energy saving performance and can achieve downsizing.

The air conditioner of the present invention that has solved the above problems includes a pair of fans arranged side by side, and a heat exchanger arranged so as to surround an inner space formed on the lower side on the upstream side of the fan. The heat exchanger has a pair of symmetrical halves arranged to correspond to each of the pair of fans, each of the halves viewed from the corresponding fan side A first heat exchanging portion, a second heat exchanging portion, a third heat exchanging portion, and a fourth heat exchanging portion that extend continuously while partially bending so as to surround the blower in plan view are arranged in this order. A pair of the half bodies having an outdoor unit having the heat exchanger joined via the fourth heat exchange portions, the opposite sides of the joint portions of the half bodies sandwiching the inner space At the joint between the halves Characterized in that it comprises the outdoor unit having a first device housing box is arranged close to the wall surface at a position where the direction.

According to the present invention, it is possible to provide an air conditioner including an outdoor unit that is excellent in energy saving performance and can achieve downsizing.

It is composition explanatory drawing of the air conditioner which concerns on embodiment of this invention. It is a whole perspective view of the outdoor unit which constitutes the air harmony machine concerning the embodiment of the present invention. It is the schematic which shows the internal structure of the outdoor unit of FIG. It is a top view which shows typically the mode of the outdoor unit seen from upper direction. It is a whole perspective view of the outdoor heat exchanger which comprises the outdoor unit of FIG. It is a schematic diagram which shows the flow of the air in the inner side space of the outdoor heat exchanger at the time of the drive of a fan. It is sectional drawing of the outdoor unit which shows a mode that the external air taken in into inner space via the outdoor heat exchanger flows toward a propeller fan with an arrow. It is a sectional side view of the outdoor unit concerning the 1st modification. It is a top view which shows typically the mode of the outdoor unit which concerns on the 2nd modification seen from upper direction. It is a top view which shows typically the mode of the outdoor unit which concerns on the 3rd modification seen from upper direction. It is a sectional side view of the outdoor unit which concerns on a 4th modification. It is a sectional side view of the outdoor unit which concerns on a 5th modification.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The air conditioner of the present invention is characterized by including an outdoor unit having an outdoor heat exchanger in which halves, which are four-sided heat exchangers described later, are joined. The outdoor heat exchanger corresponds to a “heat exchanger” in the claims (the same applies hereinafter).
Below, after explaining the whole structure of an air conditioner, the outdoor unit which comprises this air conditioner is demonstrated.

<Overall configuration of air conditioner>
FIG. 1 is a configuration explanatory diagram of an air conditioner 100 according to the present embodiment.
As shown in FIG. 1, the air conditioner 100 includes an indoor unit 91 and an outdoor unit 90, and the indoor unit 91 and the outdoor unit 90 are connected via a pipe 10. Incidentally, in the air conditioner 100 according to the present embodiment, two indoor units 91 are connected in parallel by the pipe 10. In the air conditioner 100 according to the present embodiment, it is assumed that the indoor units 91 are individually arranged in the two rooms, but the present invention is not limited to this. The indoor unit 91 can be one or three or more. When the number of indoor units 91 is 3 or more, each indoor unit 91 is connected in parallel by the pipe 10.

The indoor unit 91 includes an indoor heat exchanger 7 and an indoor expansion valve 8.
The outdoor unit 90 includes a compressor 1, a four-way valve 2, an outdoor expansion valve 6, an outdoor heat exchanger 3, and an accumulator 5.
In FIG. 1, reference numeral 4 is an outdoor fan that sends outside air to the outdoor heat exchanger 3, and reference numeral 9 is an indoor fan that sends indoor air to the indoor heat exchanger 7. The outdoor blower 4 corresponds to a “blower” in the claims. Reference numerals 15 and 16 are pipe connection portions for connecting the pipe 10 to the outdoor unit 90. The pipe connecting portions 15 and 16 are provided on the left side of the service space 31a (see FIG. 6).

This air conditioner 100 switches the four-way valve 2 so that the indoor heat exchanger 7 is used as an evaporator and the outdoor heat exchanger 3 is used as a condenser, and the indoor heat exchanger 7 is used as a condenser and outdoor heat exchange. This is a heat pump type that performs heating operation using the vessel 3 as an evaporator. The switching state of the four-way valve 2 shown in FIG. 1 is that during cooling operation. Further, in FIG. 1, the solid line arrow X indicates the refrigerant circulation direction during the cooling operation, and the broken line arrow Y indicates the refrigerant circulation direction during the heating operation.

For example, in the air conditioner 100 during the cooling operation, the high-temperature and high-pressure refrigerant compressed by the compressor 1 passes through the four-way valve 2 and flows into the outdoor heat exchanger 3 and dissipates heat by heat exchange with air. Condensed. Thereafter, the refrigerant undergoes isenthalpy expansion by the outdoor expansion valve 6 and becomes a gas-liquid two-phase flow in which a gas refrigerant and a liquid refrigerant are mixed at a low temperature and a low pressure. This gas-liquid two-phase flow of the refrigerant flows into the pipe 10 via the pipe connecting portion 15. Thereafter, the refrigerant flows into the indoor heat exchanger 7 through the indoor expansion valve 8 in each indoor unit 91.

At this time, the indoor expansion valve 8 adjusts the flow rate of the refrigerant flowing into the indoor heat exchanger 7. Then, the liquid refrigerant in the indoor heat exchanger 7 is vaporized into a gas refrigerant by an endothermic action from the air. That is, when the liquid refrigerant is vaporized, the indoor heat exchanger 7 cools the surrounding air, so that the air conditioner 100 exhibits a cooling function. Subsequently, the refrigerant that has exited each indoor heat exchanger 7 flows into the pipe 10. Thereafter, the refrigerant returns to the compressor 1 via the pipe connection portion 16 and the accumulator 5. The refrigerant that has returned to the compressor 1 is compressed to high temperature and pressure again, and circulates through the four-way valve 2, the outdoor heat exchanger 3, the indoor expansion valve 8, and the indoor heat exchanger 7. That is, a refrigeration cycle is configured by repeating this circulation.

<Outdoor unit>
Next, the outdoor unit 90 will be described in more detail.
FIG. 2 is an overall perspective view of the outdoor unit 90 constituting the air conditioner 100 (see FIG. 1) according to the present embodiment. In addition, the front-back, up-down, left-right directions in the outdoor unit 90 in this embodiment are based on the front-back, up-down, left-right directions shown in FIG. 2 when the outdoor unit 90 is installed.

As shown in FIG. 2, the outdoor unit 90 has a substantially rectangular parallelepiped outer shape.
The outdoor unit 90 is disposed on the base member 12 inside the four support frames 11, the base member 12 having a rectangular shape in plan view, the four support frames 11 standing at the four corners of the base member 12, respectively. The outdoor heat exchanger 3 and the outdoor blower 4 disposed above the outdoor heat exchanger 3 are provided.

The support frame 11 has an L shape in a sectional view (see FIG. 4), and is arranged so that the outer corner portion of the L shape corresponds to the corner portion of the base member 12.
Although not shown, the outdoor heat exchanger 3 is arranged in a plurality so that heat radiation fins made of elongated rectangular plates extending in the vertical direction are stacked in the outer peripheral direction of the outdoor unit 90, and penetrates the plurality of heat radiation fins. A plurality of refrigerant tubes are provided so as to be connected.

Such an outdoor heat exchanger 3 is exposed on four side surfaces of the substantially rectangular parallelepiped outdoor unit 90. The outdoor heat exchanger 3 forms a substantially cylindrical body having an inner space 50 (see FIG. 3) in cooperation with a panel 31 (also referred to as a service panel) disposed on the front surface of the outdoor unit 90. .
The outdoor heat exchanger 3 will be described in detail later.

The outdoor unit 90 of this embodiment includes a pair of outdoor fans 4a and 4b.
The outdoor blower 4 is disposed above the outdoor heat exchanger 3. The outdoor blower 4 is configured to discharge air from the inner space 50 (see FIG. 3) formed inside the outdoor heat exchanger 3, that is, upstream of the outdoor blower 4 to the outside of the outdoor unit 90 by driving. Has been. The driven outdoor blower 4 sucks outside air into the outdoor unit 90 from between the heat radiation fins (not shown) of the outdoor heat exchanger 3 exposed on the four side surfaces of the outdoor unit 90, and this sucked air is sucked into the outdoor unit 90. Send out.

These outdoor fans 4a and 4b are arranged side by side. In the following description, when the two outdoor fans 4a and 4b are not particularly distinguished, they are simply referred to as outdoor fans 4. In FIG. 2, reference numeral 13 is a top plate disposed on the outdoor heat exchanger 3, and reference numeral 44 is a casing disposed on the top plate 13 so as to surround the periphery of the outdoor fan 4. The code | symbol 41a is a propeller fan which comprises the outdoor air blower 4a, and the code | symbol 41b is a propeller fan which comprises the outdoor air blower 4b. When the two propeller fans 41a and 41b are not particularly distinguished, they are simply referred to as propeller fans 41.

FIG. 3 is a schematic diagram showing the internal structure of the outdoor unit 90 of FIG. FIG. 4 is a plan view showing the internal structure of the outdoor unit 90 viewed from the outdoor fan 4 side. In FIG. 3, the compressor 1 is indicated by a broken line. In FIG. 4, the description of the casing 44 (see FIG. 2) and the top plate 13 (see FIG. 2) is omitted for the convenience of drawing. In FIG. 4, the outdoor blower 4 is indicated by a two-dot chain line circle equal to the outer diameter of the propeller fan 41. Moreover, in FIG. 4, the compressor 1 is shown with the broken line.

As shown in FIG. 3, the outdoor blower 4 includes a propeller fan 41, a motor 42 that rotates the propeller fan 41, and a bell mouth 43 that covers the periphery of the propeller fan 41. Incidentally, as will be described later, it is assumed that the propeller fans 41a and 41b (see FIG. 6) in the present embodiment rotate counterclockwise (counterclockwise) in a top view.

As shown in FIG. 3, the bell mouth 43 is a substantially cylindrical body. Specifically, the bell mouth 43 is formed in a substantially cylindrical shape having a reduced diameter portion that gradually decreases in diameter from the lower portion toward the upper portion on the inner space 50 side.
Although not shown, the top plate 13 to be disposed between the bell mouth 43 and the outdoor heat exchanger 3 is formed with a circular opening having an outer diameter substantially equal to the inner diameter of the lower portion of the bell mouth 43. . The inner space 50 communicates with the inner side of the bell mouth 43 through the circular opening.

Further, a motor support frame (not shown) is spanned in the radial direction of the circular opening. The motor 42 is supported by this motor support frame (not shown).
In FIG. 3, reference numeral 32 denotes a machine room housing disposed inside the outdoor heat exchanger 3 and closer to the front of the base member 12, that is, on the rear surface side of the panel 31. Incidentally, the panel 31 forms a wall surface that partitions the inner space 50 on the opposite side of the joining pillar 40 described later with the inner space 50 interposed therebetween.

In the machine room (not shown) formed inside the machine room housing 32, the compressor 1 and the outdoor expansion valve 6 (see FIG. 1) are arranged. The machine room housing 32 in the present embodiment is disposed so as to be close to the rear surface of the panel 31.

As described later, the outdoor unit 90 of the present embodiment is assumed to have two compressors 1 arranged in the left-right direction in the machine room housing 32 (see FIG. 4). However, the outdoor unit 90 may be configured to have one compressor 1.

Numeral 33 is an electric box superimposed on the machine room housing 32, and numeral 35 is a radiator attached to the electric box 33. Incidentally, the electric box 33 is provided with a control device for overall control of the air conditioner 100 (see FIG. 1). The electric box 33 is disposed so as to be close to the rear surface of the panel 31.

The length of the electric box 33 in the front-rear direction is shorter than the length of the machine room housing 32 in the front-rear direction.
Due to the difference in length in the front-rear direction, a step is formed from the upper electric box 33 to the lower machine chamber housing 32. That is, the rear surface of the machine room housing 32 protrudes rearward from the rear surface of the electric box 33.
Further, the electrical box 33 is shorter than the machine room housing 32 in the left and right widths. That is, the cross sectional area of the electric box 33 is set to be smaller than the cross sectional area of the machine room housing 32.

In addition, the electric box 33 in the present embodiment is disposed so as to overlap the machine room housing 32 as described above. However, the arrangement position of the electric box 33 in the vertical direction is not limited to this, and is set between the upper end of the outdoor heat exchanger 3 and the upper end of the machine room housing 32, preferably the upper end of the compressor 1. can do.

As shown in FIG. 3, the heat radiator 35 is attached to the side surface of the electric box facing the central portion of the inner space 50, that is, the rear surface of the electric box 33. The vertical mounting position of the radiator 35 is set such that the vertical center position P1 of the radiator 35 is higher than the vertical center position P2 of the electrical box 33.

As shown in FIG. 4, the radiator 35 attached to the rear surface of the electric box 33 includes a plurality of radiating fins. The radiator 35 is erected on the rear surface of the electric box 33 such that the longitudinal direction of the plurality of radiating fins is along the vertical direction, and is arranged so that the plate surfaces of the plurality of radiating fins face the left-right direction of the outdoor unit 90. ing.

(Outdoor heat exchanger)
Next, the outdoor heat exchanger 3 constituting the outdoor unit 90 will be described in more detail.
As shown in FIG. 4, as described above, the outdoor heat exchanger 3 is formed integrally with the panel 31 provided at the center of the front surface of the outdoor unit 90 (front surface, the same applies hereinafter) to form a substantially cylindrical body. Yes.
This outdoor heat exchanger 3 is configured by integrally joining a left half 30a and a right half 30b.

The left half 30a and the right half 30b are provided so as to correspond to the left and right outdoor fans 4a and 4b.
The left half 30a and the right half 30b are formed symmetrically. Specifically, the left half 30a and the right half 30b are formed to be line-symmetric with respect to the central axis 60 of the outdoor unit 90 extending in the front-rear direction of the outdoor unit 90 in plan view.

Each of the left half 30a and the right half 30b extends continuously while partially bending so as to surround each of the outdoor fans 4a and 4b when viewed from the corresponding outdoor fan 4a and 4b. Yes. In other words, each of the left half 30a and the right half 30b has one end disposed on the front side, and is disposed along the outer periphery of the outdoor unit 90 to the front, side, and back.

Specifically, the left half 30a includes a first heat exchange unit 3a disposed on the front surface of the outdoor unit 90, a second heat exchange unit 3b disposed on the left side surface of the outdoor unit 90, and the outdoor unit 90. It has the 3rd heat exchange part 3c arrange | positioned at a back surface, and the 4th heat exchange part 3d arrange | positioned so as to oppose the 2nd heat exchange part 3b. And the 1st heat exchanging part 3a to the 4th heat exchanging part 3d are continuing in the clockwise direction centering on left outdoor fan 4a. The first heat exchanging part 3a to the fourth heat exchanging part 3d are bent so as to form an inner angle of 90 degrees with each other through an R part having a predetermined curvature.

The right half 30b is disposed on the first heat exchange unit 3a disposed on the front surface of the outdoor unit 90, the second heat exchange unit 3b disposed on the right side surface of the outdoor unit 90, and the rear surface of the outdoor unit 90. The third heat exchanging part 3c and the fourth heat exchanging part 3d arranged so as to face the second heat exchanging part 3b are provided. And the 1st heat exchange part 3a to the 4th heat exchange part 3d are continuing counterclockwise centering on the outdoor fan 4a of the right side. The first heat exchanging part 3a to the fourth heat exchanging part 3d are bent so as to form an inner angle of 90 degrees with each other through an R part having a predetermined curvature.

That is, in each of the left half 30a and the right half 30b, the first heat exchange part 3a and the third heat exchange part 3c face each other in the front, rear, left and right with the outdoor fans 4a and 4b as the center, and the second heat The exchange part 3b and the fourth heat exchange part 3d are opposed to each other. Therefore, each of the left half 30a and the right half 30b is a four-sided heat exchanger having the first heat exchanger 3a to the fourth heat exchanger 3d.

In such left half body 30a and right half body 30b, the length in the left-right direction of the first heat exchange unit 3a is shorter than the length in the left-right direction of the third heat exchange unit 3c.
Therefore, an opening is formed between the end of the first heat exchange part 3a in the left half 30a and the end of the first heat exchange 3a in the right half 30b. This opening constitutes a service space 31a described later of the outdoor unit 90. The panel 31 is attached to the service space 31a.

The length in the front-rear direction of the fourth heat exchange part 3d is shorter than the length in the front-rear direction of the second heat exchange part 3b.
Therefore, a predetermined interval is ensured between the end of the fourth heat exchange part 3d in the left half 30a and the right half 30b and the panel 31. By securing this distance, the space surrounded by the left half 30a and the space surrounded by the right half 30b are integrated to form the inner space 50 described above.

It is desirable that the end of the first heat exchanging part 3a and the end of the fourth heat exchanging part 3d are arranged outside the outer diameters of the propeller fans 41a and 41b as will be described later.
Incidentally, the end portion of the first heat exchange unit 3a in the present embodiment is disposed on the outer side in the left-right direction with respect to the respective rotation centers Ax of the propeller fans 41a and 41b.

In addition, in the outdoor heat exchanger 3 shown in FIG. 4, the outer edge part of the outdoor heat exchanger 3 and the propeller fans 41a and 41b has overlapped partially by planar view seen from the outdoor air blower 4 side. However, the propeller fans 41 a and 41 b may be configured to be disposed inside the outdoor heat exchanger 3.

The fourth heat exchange portions 3d of the left half 30a and the right half 30b face each other, and form parallel portions with each other in the vicinity of the ends. A gap 39 is formed between the facing portions of the fourth heat exchange portion 3d.
The gap 39 is a plan view of the outdoor heat exchanger 3 viewed from the outdoor fan 4 side, and the width of the gap 39 (the left-right width in FIG. 4) is gradually narrowed from the back side to the front side of the outdoor unit 90. It has become.
The width W1 of the gap 39 at the end of the fourth heat exchange part 3d is the narrowest.

In the outdoor heat exchanger 3, the fourth heat exchange part 3d in the left half 30a and the fourth heat exchange part 3d in the right half 30b are joined via a substantially U-shaped joining pillar 40 in a sectional view. Has been. The joining pillar 40 corresponds to a “joining member” in the claims.

FIG. 5 is an overall perspective view of the outdoor heat exchanger 3 constituting the outdoor unit 90.
As shown in FIG. 5, the joining pillar 40 extends in the vertical direction between the fourth heat exchange part 3d in the left half 30a and the fourth heat exchange part 3d in the right half 30b. .
The joining pillar 40 is formed such that the gap 39 is formed between the fourth heat exchanging part 3d in the left half 30a and the fourth heat exchanging part 3d in the right half 30b, while the left half 30a and the right half 30a are formed. The body 30b is integrally connected.

In FIG. 5, the code | symbol 38 is a side plate long in the up-down direction connected to the edge part of the 1st heat exchange part 3a. The side plate 38 covers a folded portion (not shown) of the refrigerant pipe formed at the end of the first heat exchange unit 3a. The lower end of the side plate 38 is fixed to the base member 12 (see FIG. 4), and the upper end of the side plate 38 is fixed to the top plate 13 (see FIG. 3).
Moreover, the code | symbol 3b is a 2nd heat exchange part, the code | symbol 3c is a 3rd heat exchange part, and the code | symbol 3d is a 4th heat exchange part. Reference numeral 21 is a branch pipe, and reference numeral 37 is a connecting pipe that connects the branch pipe 21 and a refrigerant pipe (not shown) of the outdoor heat exchanger 3.

As shown in FIG. 4, the minimum width W1 of the gap 39 on the end side of the fourth heat exchanging portion 3d is obtained when the distance from the side surface of the outdoor unit 90 to the outer side surface of the second heat exchanging portion 3b is W2. It is desirable to set the distance larger than twice the distance W2.
The joining pillar 40 closes an opening formed between the end of the fourth heat exchange part 3d in the left half 30a and the end of the fourth heat exchange 3d in the right half 30b. The outside air is prevented from entering the inner space 50 through the opening.

Incidentally, the lower end of the joining pillar 40 is fixed to the base member 12 (see FIG. 4), and the upper end of the joining pillar 40 is fixed to the top plate 13 (see FIG. 3).
The service space 31a is secured between the end of the first heat exchanging part 3a in the left half 30a and the end of the first heat exchanging part 3a in the right half 30b.

The service space 31a is an access opening to the inner space 50, and for example, allows access to devices arranged in the inner space 50.
A panel 31 (see FIG. 2) is detachably attached to the service space 31a so as to close the service space 31a.

As shown in FIG. 4, the refrigerant branch pipe 21 is connected to the front end of the fourth heat exchanging section 3 d via the connecting pipe 37 as described above.
The branch pipe 21 connected to one fourth heat exchange part 3d of the pair of fourth heat exchange parts 3d, 3d is opposite to the other fourth heat exchange part 3d aligned with the fourth heat exchange part 3d. Placed in.

That is, the branch pipe 21 attached to the left half 30a is arranged at a position shifted to the left from the position of the fourth heat exchange part 3d of the left half 30a. The connecting pipe 37 connected to the refrigerant pipe (not shown) at the end of the fourth heat exchanging portion 3d extends forward from the end of the fourth heat exchanging portion 3d and then reverses clockwise. It is connected to the branch pipe 21 (by changing the extending direction by 180 ° so as to bend to the left side).

Further, the branch pipe 21 attached to the right half 30b is arranged at a position shifted to the right from the position of the fourth heat exchange part 3d of the right half 30b. Then, the connecting pipe 37 connected to the refrigerant pipe (not shown) at the end of the fourth heat exchanging part 3d extends forward from the end of the fourth heat exchanging part 3d and then reverses counterclockwise. It is connected to the branch pipe 21 (by changing the extending direction by 180 ° so as to be bent to the right).

Each end portion of the first heat exchanging portion 3a in the left half body 30a and the right half body 30b is disposed outside the rotation radius (outer diameter) of the propeller fans 41a and 41b.
Further, the fourth heat exchanging part 3d in the left half 30a and the right half 30b has an end extending from the back side to the front side of the outdoor unit 90, and the rotation radius (outer diameter) of the propeller fans 41a and 41b. It is arranged outside.

Further, the length L1 from the rear end of the outdoor heat exchanger 3 to the end (front end) of the fourth heat exchange part 3d is the length from the rear end of the outdoor heat exchanger 3 to the front end of the outdoor heat exchanger 3. It is desirable that it is not more than half of L2 (L1 ≦ L2 / 2).
In addition, when the distance from the rear end of the outdoor heat exchanger 3 to the rotation center Ax of the propeller fan 41 is L3, it is desirable to set the distances L1 and L3 so that the distance L1 <the distance L3. It is more desirable to set the distance L1 to be larger than half of the distance L3.

<Operation effect of air conditioner>
First, in the outdoor unit 90, the effect which the air conditioner 100 shows by having the outdoor heat exchanger 3 with which the left half 30a and the right half 30b were joined is demonstrated.
In the air conditioner 100 of this embodiment, each of the left half 30a and the right half 30b constituting the outdoor heat exchanger 3 includes a first heat exchange unit 3a, a second heat exchange unit 3b, and a third heat exchange unit. 3c and the 4th heat exchange part 3d. Accordingly, each of the left half 30a and the right half 30b takes outside air into the inner space 50 from the four directions of front, rear, left and right.

Therefore, according to the outdoor unit 90, unlike the conventional outdoor unit (see, for example, Patent Document 1), outside air is taken into the inner space 50 via the outdoor heat exchanger 3 arranged in four directions, front, rear, left, and right. It is done.
Therefore, according to this outdoor unit 90, compared with the conventional outdoor unit (for example, refer patent document 1), the wind speed distribution of the circumferential direction of the propeller fan 41 is made more uniform, and ventilation performance can be improved further. it can.

Further, according to the outdoor unit 90, the first heat exchange unit 3a, the second heat exchange unit 3b, the third heat exchange unit 3c, and the fourth heat exchange unit 3d are arranged along the outer periphery of the outdoor unit 90. Therefore, the inner space 50 can be used effectively, and the increase in the size of the outdoor unit 90 is suppressed.

Moreover, according to this outdoor unit 90, since the heat transfer performance of the outdoor heat exchanger 3 can be improved and the ventilation resistance can be reduced without increasing the size of the outdoor unit 90, it is excellent in energy saving performance and compact. It is possible to provide the air conditioner 100 that can achieve the above.

Moreover, the outdoor heat exchanger 3 in this embodiment differs from what the edge parts of the conventional half body oppose (for example, refer patent document 1) toward the front side from the back side of the outdoor unit 90. The extending end portions of the fourth heat exchange section 3d of the left half body 30a and the right half body 30b do not face each other but face each other in the parallel direction (see FIG. 4).

In the case where the ends of the conventional halves face each other, it is necessary to secure an extra space between the halves in order to avoid interference between the pipes extending from each end.
On the other hand, in the outdoor heat exchanger 3 in the present embodiment, the end portions of the fourth heat exchanging portion 3d face each other in the parallel direction (see FIG. 4), and therefore the connecting pipe extending from the end portion. 37 do not interfere with each other. Therefore, it is not necessary to secure an extra space between the left half 30a and the right half 30b, and the left half 30a and the right half 30b can be arranged close to each other.
Therefore, according to the outdoor unit 90 of the present embodiment, it is possible to achieve downsizing.
Moreover, according to the outdoor unit 90 of the present embodiment, the degree of freedom in structural design around the end of the fourth heat exchange unit 3d is also increased.

Moreover, since the outdoor heat exchanger 3 of this embodiment has the 4th heat exchange part 3d extended | stretched from the back side to the front side, it is outdoor heat rather than the conventional outdoor unit (for example, refer patent document 1). An even larger heat exchange surface of the exchanger 3 can be secured. Moreover, since the 4th heat exchange part 3d has in both the left half 30a and the right half 30b, the increase effect of a heat exchange surface is doubled. Therefore, this outdoor unit 90 is excellent in energy saving performance.

Moreover, according to the outdoor unit 90 in the present embodiment, the outside air is supplied to the fourth heat exchange unit 3d of the left half 30a and the right half 30b through the gap 39 (see FIG. 4). That is, in the conventional outdoor unit (for example, refer to Patent Document 1), the gap 39 in the present embodiment is different from the extra space formed between the ends of the half bodies. It can be effectively used as an outside air supply path for the fourth heat exchange section 3d). Therefore, the outdoor unit 90 of this embodiment can increase the heat exchange surface of the outdoor heat exchanger 3 without enlarging the external dimension of the outdoor unit 90. Therefore, this outdoor unit 90 is excellent in energy saving performance and can achieve downsizing.

Next, FIG. 6 referred to is a schematic diagram showing the air flow in the inner space 50 of the outdoor heat exchanger 3 when the propeller fans 41a and 41b are driven.
In a conventional outdoor unit (for example, see Patent Document 1), a swirling flow is generated in the same direction as the rotation direction of the blower on the outside air suction side. Therefore, assuming that both of the propeller fans provided in the pair of halves rotate counterclockwise when viewed from above, each propeller fan rotates on the upstream side of each propeller fan (inside the outdoor heat exchanger). A counterclockwise swirling flow is generated depending on the direction.

As a result, in the adjacent region between the two counterclockwise swirling flows, that is, in the central portion in the left-right direction of the inner space 50, the swirling flows interfere with each other because they flow in opposite directions. Therefore, in the conventional outdoor unit (for example, refer to Patent Document 1), the interference between the swirling flows is a factor that reduces the blowing performance of the blower.

On the other hand, in the outdoor unit 90 of the present embodiment, as shown in FIG. 6, the outside air passes through the fourth heat exchange unit 3d through a gap 39 formed on the back side of the outdoor heat exchanger 3.
The outside air that has passed through the fourth heat exchanging portion 3d of the right half 30b generates a rightward air flow FR on the upstream side of the right propeller fan 41b (the inner space 50 of the outdoor heat exchanger 3). The air flow FR is changed so that the swirling flow that flows toward the lower side of the sheet of FIG.

Also, the outside air that has passed through the fourth heat exchanging portion 3d of the left half 30a generates a leftward air flow FL on the upstream side of the left propeller fan 41a (the inner space 50 of the outdoor heat exchanger 3). This air flow FL changes the swirl flow that flows toward the upper side of the sheet of FIG. 6 at the center in the left-right direction of the inner space 50 so as to flow to the left.

This suppresses the interference of airflow induced by the left and right propeller fans 41a and 41b. Therefore, in the outdoor unit 90, the energy saving performance of the propeller fans 41a and 41b can be improved by suppressing the interference of the airflow.

Further, as shown in FIG. 6, a distance T is secured between the outflow surfaces of the air flows FR and FL in the pair of fourth heat exchange portions 3d and 3d. And by ensuring this distance T, a predetermined distance will be ensured between the center part of the inner side space 50 prescribed | regulated between the propeller fans 41a and 41b, and the said outflow surface. . That is, interference in the central portion of the inner space 50 due to the air flows FR and FL is also reduced.

Further, as shown in FIG. 6, in this outdoor unit 90, the amount of air flowing into the inner space 50 from the back side is larger than the amount of air flowing into the inner space 50 from the front side where the panel 31 is located. That is, the air that has flowed into the inner space 50 from the back side of the outdoor heat exchanger 3 flows toward the panel 31 side. Therefore, the interference of the air flow in the central portion of the inner space 50 is more reliably reduced.

In the outdoor unit 90, as described above, the minimum width W1 of the gap 39 on the end side of the fourth heat exchange unit 3d is from the side surface of the outdoor unit 90 to the outer side surface of the second heat exchange unit 3b. When the distance is W2, it is desirable to set it to be larger than twice the distance W2 (see FIG. 4).
According to such an outdoor unit 90, the gap 39 can be sufficiently secured, and the heat exchange performance in the fourth heat exchange unit 3d can be further improved.

In the outdoor unit 90, as described above, the length L1 from the rear end of the outdoor heat exchanger 3 to the end (front end) of the fourth heat exchange unit 3d is the rear end of the outdoor heat exchanger 3. It is desirable that it is not more than half of the length L2 from the front end of the outdoor heat exchanger 3 (L1 ≦ L2 / 2).

For example, assuming that a plurality of outdoor units 90 are installed side by side in the left-right direction, it is conceivable that outside air is preferentially taken into the inner space 50 of each outdoor unit 90 from the back side.
Therefore, it is desirable to allow the outside air to efficiently pass through also in the fourth heat exchange unit 3d.
On the other hand, according to the outdoor unit 90 in which the distances L1 and L2 are defined as described above, the outside air can be passed efficiently even in the fourth heat exchange unit 3d. Thereby, since the outside air can be effectively taken into the inner space 50, the outdoor unit 90 is further excellent in energy saving performance.

Further, in the outdoor unit 90, as described above, when the distance from the rear end of the outdoor heat exchanger 3 to the rotation center Ax of the propeller fan 41 is L3, the distance L1 <the distance L3 is satisfied. It is desirable to set the distances L1 and L3. It is more desirable to set the distance L1 to be larger than half of the distance L3.

As described above, according to the outdoor unit 90 that defines the distances L1 and L3, the flow of outside air that passes through the fourth heat exchanging portion 3d and moves toward the inner space 50 is not interfered with the flow of air in the vicinity of the panel 31. Therefore, this outdoor unit 90 can maintain the ventilation performance by the propeller fans 41a and 41b well, and can improve the heat exchange performance in the fourth heat exchange section 3d. Further, by setting the distance L1 to be larger than half of the distance L3, the heat exchange performance in the fourth heat exchange part 3d can be improved, and the interference between the air flows in the central part of the inner space 50 is effective. Can be suppressed.

This outdoor unit 90 can further improve the blowing performance and the heat exchange performance even when the propeller fans 41a and 41b are brought close to each other by arranging the fourth heat exchange section 3d as described above. it can.

In the outdoor unit 90, as described above, the end of the first heat exchanging unit 3a and the end of the fourth heat exchanging unit 3d are larger than the rotation radius (outer diameter) of the propeller fans 41a and 41b. Arranged outside. Thereby, the ventilation resistance by the propeller fans 41a and 41b with respect to the edge part of the 1st heat exchange part 3a and the edge part of the 4th heat exchange part 3d is relieved. Thereby, since the propeller fans 41a and 41b and the outdoor heat exchanger 3 can be arranged closer to each other in the vertical direction, the outdoor unit 90 can be made compact.

In the outdoor unit 90, as described above, the branch pipe 21 connected to one of the pair of fourth heat exchange units 3d, 3d is connected to the fourth heat exchange unit. It is arrange | positioned on the opposite side of the other 4th heat exchange part 3d along with 3d.

According to such an outdoor unit 90, for example, compared to a configuration in which the branch pipe 21 is arranged in front of the end of the fourth heat exchange unit 3d, the outdoor unit 90 is secured in front of the end of the fourth heat exchange unit 3d. The inner space 50 increases. Therefore, the 4th heat exchange part 3d can extend the length of the 4th heat exchange part 3d further ahead according to the increase in the inside space 50.
Thereby, since the heat exchange surface of the outdoor heat exchanger 3 increases, the outdoor unit 90 can further improve energy saving performance.

Further, for example, since the branch pipe 21 is not disposed in front of the end portion of the fourth heat exchanging portion 3d, there is a margin in the arrangement space of the joining pillar 40 that connects the end portions of the fourth heat exchanging portion 3d. Thereby, the freedom degree of the structural design around the edge part of the 4th heat exchange part 3d expands.

In addition, at the position shifted laterally from the end of the fourth heat exchanging part 3d where the branch pipe 21 is arranged as described above, the air flow is larger than that in front of the end of the fourth heat exchanging part 3d. Get faster.
Therefore, according to this outdoor unit 90, the branch pipe 21 itself exposed to this fast air flow is utilized as a heat exchanger.

Next, the operational effects of the air conditioner 100 due to the electrical box 33 as the first device storage box and the machine room housing 32 as the second device storage box arranged at predetermined positions will be described.

In the outdoor heat exchanger 3 having the fourth heat exchange part 3d, the outside air that has flowed into the inner space 50 via the fourth heat exchange part 3d expands the air path to the vicinity of the panel 31 and then flows toward the outdoor blower 4. . Therefore, the influence which the ventilation resistance of the electric box 33 arrange | positioned in the panel 31 vicinity and the heat radiator 35 has on ventilation efficiency becomes large. Therefore, the importance of the arrangement and shape of the electric box 33 and the radiator 35 is increased.

In the outdoor unit 90 of the present embodiment, the electric box 33 as the first device storage box is the rear surface of the panel 31 and is disposed at a position where the distance between the end of the fourth heat exchange unit 3d and the panel 31 is closest. (See FIG. 3).

According to the outdoor unit 90, since the electric box 33 protrudes toward the central portion of the inner space 50, interference of airflow at the central portion of the inner space 50 by the propeller fans 41a and 41b is suppressed. Therefore, according to this outdoor unit 90, the ventilation efficiency by the propeller fans 41a and 41b can be improved. Further, by suppressing the interference of the air flow, the rotation centers of the propeller fans 41a and 41b can be made closer to each other, and the outdoor unit 90 can be made compact.

By the way, the interference of the air flow in the central portion of the inner space 50 by the propeller fans 41a and 41b tends to become stronger as the position is higher above the inner space 50 near the propeller fans 41a and 41b.

On the other hand, in the outdoor unit 90, the electric box 33 is disposed between the upper end of the compressor 1 and the upper end of the outdoor heat exchanger 3 (see FIG. 3).
Therefore, according to the outdoor unit 90, the electric box 33 is disposed above the inner space 50 where the interference of the air flow at the center of the inner space 50 becomes strong. Therefore, according to the outdoor unit 90, the interference of the airflow in the center part of the inner space 50 by the propeller fans 41a and 41b can be efficiently suppressed.

Further, by making the lower end of the electric box 33 higher than the upper end of the compressor 1, maintenance, replacement work, and the like of the compressor 1 are facilitated without removing the electric box 33.
In the outdoor unit 90, the electric box 33 is disposed below the upper end of the outdoor heat exchanger 3, thereby preventing the electric box 33 from being excessively close to the propeller fans 41a and 41b. . As a result, variations in the inflow speed of air to the propeller fans 41a and 41b are reduced. Moreover, the ventilation performance by the propeller fans 41a and 41b is maintained well, and noise generation based on the wind noise of the propeller fans 41a and 41b is suppressed.

FIG. 7 is a cross-sectional view of the outdoor unit 90 schematically showing by arrows that the outside air taken into the inner space 50 via the outdoor heat exchanger 3 flows toward the propeller fans 41a and 41b. FIG. 7 schematically shows the internal structure of the outdoor unit 90 viewed from the back side toward the front side.

As shown in FIG. 7, in the outdoor unit 90, a machine room housing 32 as a second device storage box is disposed below an electric box 33 as a first device storage box. Further, the electric box 33 and the machine room housing 32 overlap in the vertical direction.
In such an outdoor unit 90, the outside air flowing into the inner space 50 via the outdoor heat exchanger 3 flows toward the propeller fans 41a and 41b after expanding the air path to the vicinity of the panel 31 as described above.

In the outdoor unit 90 shown in FIG. 7, the electric box 33 and the machine room housing 32 overlap in the vertical direction, so that air flows upward along the back surface of the electric box 33. That is, in the outdoor unit 90 in which the electric box 33 is provided, the change in the cross-sectional area of the flow path from the machine chamber housing 32 side to the propeller fans 41a and 41b becomes slower than in the case where the electric box 33 is not provided.
Thereby, peeling of the boundary layer in the vicinity of the wall surface of the airflow flowing upward is suppressed. Therefore, the ventilation resistance of the outdoor unit 90 is further reduced.

Moreover, in the outdoor unit 90 of this embodiment, the cross-sectional area of the electric box 33 is smaller than the cross-sectional area of the machine room housing 32 (see FIG. 4).
In such an outdoor unit 90, it is desirable to set the distance U1 between the lower end of the electric box 33 and the upper end of the machine room housing 32 to be smaller than the distance U2 between the upper end of the electric box 33 and the lower ends of the propeller fans 41a and 41b. . According to the outdoor unit 90, the ventilation resistance can be effectively reduced.

In the outdoor unit 90 shown in FIG. 4, the cross-sectional area of the electric box 33 occupying in the air passage formed in the inner space 50 is smaller than the cross-sectional area of the machine room housing 32. In such an outdoor unit 90, ventilation resistance can be reduced by arranging the electric box 33 above the inner space 50 near the propeller fans 41a and 41b and having a high wind speed.
In the present embodiment, it is assumed that the compressor 1 is disposed in the machine room housing 32. However, by omitting the machine room housing 32 and arranging the plurality of compressors 1 along the panel 31, it is also possible to obtain the same operational effects as the machine room housing 32.

A radiator 35 is provided on the rear surface of the electric box 33 so as to protrude rearward (see FIG. 4). The heat radiating fins constituting the heat radiator 35 are provided so as to extend in the vertical direction (see FIG. 3).
In the outdoor unit 90 of the present embodiment, the radiator 35 is provided on the rear surface of the electric box 33 so as to protrude rearward, so that the airflow interference in the central portion of the inner space 50 is caused by the radiator 35. Furthermore, it is suppressed efficiently.

Moreover, since the radiation fin which comprises the heat radiator 35 is formed with the plate body, the interference of the airflow in the center part of the inner side space 50 is suppressed more efficiently by lengthening a radiation fin in the front-back direction. The

Further, since the heat dissipating fins made of plates are erected on the rear surface of the electric box 33 so as to extend in the vertical direction, the heat radiator 35 allows upward air flow toward the propeller fans 41a and 41b. . Therefore, for example, compared with the case where the electrical box 33 itself is formed long in the front-rear direction to suppress the interference of the air flow in the central portion of the inner space 50, the increase in ventilation resistance can be greatly reduced.
And the radiation fin of the heat radiator 35 is exposed to the air flow which flows upwards, and can cool the electric box 33 efficiently.

Also, the mounting position of the radiator 35 with respect to the electric box 33 is set so that the vertical center position P1 of the radiator 35 is higher than the vertical center position P2 of the electric box 33. As a result, the air flowing in the vicinity of the radiator 35 has a velocity component mainly upward. Therefore, the ventilation resistance in the radiator 35 can be reduced.

And by this effect, since it becomes possible to arrange | position the heat radiator 35 in the area | region where the wind speed of propeller fan 41a, 41b vicinity is high, the thermal radiation amount from the heat radiator 35 can be increased. Moreover, since the heat dissipation performance of the radiator 35 is improved, the radiator 35 can be downsized.

As described above, the outdoor unit 90 of the present embodiment includes the electrical box 33 as the first device storage box and the machine room housing 32 as the second device storage box on the rear surface of the panel 31. Thereby, the outdoor unit 90 can suppress the increase in ventilation resistance, can improve the blowing performance by the propeller fans 41a and 41b, and can provide the air conditioner 100 excellent in energy saving performance.

As mentioned above, although this embodiment was described, this invention is not limited to the said embodiment, It can implement with a various form.
FIG. 8 is a side sectional view of the outdoor unit 90 according to the first modification. FIG. 9 is a plan view schematically showing a state of the outdoor unit 90 according to the second modification as viewed from above. FIG. 10 is a plan view schematically showing the state of the outdoor unit 90 according to the third modification as viewed from above. FIG. 11 is a side sectional view of an outdoor unit 90 according to a fourth modification. FIG. 12 is a side sectional view of an outdoor unit 90 according to a fifth modification.

As shown in FIG. 8, in the outdoor unit 90 according to the first modification, an inclined surface 61 is formed in the machine room housing 32 as a second device storage box.
The inclined surface 61 is formed at the upper rear part of the machine room housing 32. The inclined surface 61 eliminates a step formed in the upper rear portion of the machine room housing 32 when the electric box 33 having a shorter length in the front-rear direction than the machine room housing 32 is disposed on the machine room housing 32. To do. In other words, the inclined surface 61 is formed so as to absorb the difference in length between the machine room housing 32 and the electric box 33 in the front-rear direction.

The inclined surface 61 prevents the air passage of the air flowing upward from abruptly expanding at the stepped portion due to the difference in length between the machine room housing 32 and the electric box 33 in the front-rear direction.
According to the outdoor unit 90, the turbulence of the air flow in the vicinity of the lower end of the electric box 33 can be reduced. As a result, the flow of air from the machine room housing 32 to the electric box 33 becomes smooth, and the ventilation resistance not only in the rear surface of the machine room housing 32 but also in the region including the rear surface of the electric box 33 is reduced. The

Further, in the outdoor unit 90, as described above, since the center position P1 of the radiator 35 is set to be higher than the center position P2 of the electric box 33, the ventilation resistance is reduced and heat dissipation is performed. Performance is also improved.
The inclined surface 61 can be formed by chamfering the corner of the machine chamber housing 32, or can be formed by arranging a separately prepared inclined plate at a predetermined position.

As shown in FIG. 9, the outdoor unit 90 according to the second modification has an electric box 33 that is long in the front-rear direction.
According to the outdoor unit 90, the electric box 33 can effectively suppress the interference of the air flow generated in the central portion of the inner space 50 by the propeller fans 41a and 41b.

Further, in this outdoor unit 90, for example, compared to the outdoor unit 90 (see FIG. 4) of the above-described embodiment, the thickness of the electric box 33 in the left-right direction is thin. The cross-sectional area of the airflow flowing through the airflow is small. Therefore, according to this outdoor unit 90, the ventilation resistance above the electric box 33 is reduced.

In the outdoor unit 90 shown in FIG. 9, the radiator 35 is provided on the side surface of the electric box 33.
The position of the radiator 35 with respect to the electric box 33 is preferably the side surface of the electric box 33 on the side where the blades of the rotating propeller fans 41a and 41b approach, and the position where the blade tip is closest.
Incidentally, in the outdoor unit 90 shown in FIG. 9, the side surface of the electrical box 33 on the side closer to the propeller fans 41 a and 41 b that rotate counterclockwise (counterclockwise) is the left side surface of the electrical box 33. The radiator 35 is provided on the locus (outer diameter) of the blade tip of the propeller fan 41a on the left side surface.

In such an outdoor unit 90, the air flow generated by the rotation of the propeller fan 41a is supplied most to the radiator 35. Therefore, the outdoor unit 90 is excellent in the heat dissipation efficiency of the radiator 35.

Further, in the outdoor unit 90, the position of the radiator 35 is shifted to the panel 31 side from the center in the front-rear direction of the electric box 33, so that the propeller fan 41a and the radiator 35 can be separated. Thereby, the ventilation performance by propeller fan 41a, 41b is maintained favorable, and the noise generation based on the wind noise of propeller fan 41a, 41b is suppressed.

Moreover, according to this outdoor unit 90, since the thickness of the electric box 33 in the left-right direction is thin, access to the inner space 50 via the service space 31a is facilitated.

As shown in FIG. 10, the outdoor unit 90 according to the third modification has an electric box 33 that is long in the front-rear direction.
The electric box 33 of the outdoor unit 90 shown in FIG. 10 has device storage portions 33a on both sides of the radiator 35 so as to sandwich the radiator 35 in the center. And the apparatus storage parts 33a of both right and left sides are integrally connected by the connection part 33b by the front side.

The electric box 33 has a substantially U shape that opens rearward of the outdoor unit 90 and closes forward when viewed from above.
The heat radiator 35 is formed of a plurality of heat radiating fins arranged in the front-rear direction between the device storage portions 33a. The heat radiating fins are arranged so as to extend in the vertical direction. The plate surface of the heat radiating fin faces in the front-rear direction. Incidentally, the air flow passes between the plate surfaces of the radiation fins. Thereby, the radiator 35 of the outdoor unit 90 shown in FIG. 10 can have the same effect as the radiator 35 in the embodiment.

Since such an outdoor unit 90 has the electric box 33 that is long in the front-rear direction, the same effect as the outdoor unit 90 of the second modification shown in FIG. 9 can be achieved.
Further, in the outdoor unit 90 shown in FIG. 10, the device storage portion 33a is provided so as to be accessible from both the left and right sides, and the maintenance of the devices stored therein is facilitated.
Moreover, the terminal block etc. of the apparatus accommodated in the apparatus accommodating part 33a can be arrange | positioned at the connection part 33b of the electrical box 33. FIG. And since the connection part 33b faces the service space 31a, access to a terminal block etc. becomes easy.

As shown in FIG. 11, the outdoor unit 90 according to the fourth modified example has a bypass air passage 65 for the upward air between the electric box 33 and the panel 31. In FIG. 11, reference numeral 61 denotes an inclined surface provided in the machine room housing 32.

In the outdoor unit 90, the air flow is guided to the propeller fan 41 through the rear surface of the machine room housing 32 and the rear surface of the electric box 33. In the outdoor unit 90, the air flow that has flowed into the bypass air passage 65 via the rear surface of the machine room housing 32 and the inclined surface 61 is guided to the propeller fan 41 via the space above the electric box 33. It is burned.

On the other hand, although not shown, in the outdoor unit 90 that does not have the bypass air passage 65, the air flow that has flowed into the space above the electric box 33 through the rear surface of the machine room housing 32 and the rear surface of the electric box 33 is propeller fan. 41 and flows forward, that is, toward the panel 31 side. The air flow toward the panel 31 is reversed near the panel 31 and guided to the propeller fan 41. Therefore, in the outdoor unit 90 that does not have the bypass air passage 65, the ventilation resistance increases.

On the other hand, in the outdoor unit 90 shown in FIG. 11, the air flow flowing out from the bypass air passage 65 is guided to the propeller fan 41 without greatly changing the direction, and thus the ventilation resistance is small.
In the outdoor unit 90 shown in FIG. 11, the electric box 33 and the propeller fan 41 approach each other by shifting the position of the electric box 33 from the panel 31 side toward the center of the inner space 50. As a result, the air flow passing upward around the electric box 33 is easily guided to the propeller fan 41.
From the above, according to the outdoor unit 90 shown in FIG. 11, the energy saving performance is excellent.

As shown in FIG. 12, the outdoor unit 90 according to the fifth modified example is an inclined surface 66 a in which the corner portion at the front upper portion of the electric box 33 is chamfered in the outdoor unit 90 according to the fourth modified example shown in FIG. 11. And a rectifying plate 66b so as to face the inclined surface 66a.

In the outdoor unit 90 shown in FIG. 12, the cross-sectional area of the upper portion of the bypass air passage 65 is enlarged by having the inclined surface 66 a in the electric box 33.
In such an outdoor unit 90, the amount of air flowing into the bypass air passage 65 from the side of the electric box 33 can be increased, and the amount of air flowing upward from the bypass air passage 65 can be increased. Therefore, according to the outdoor unit 90, the ventilation resistance can be further reduced as compared with the outdoor unit 90 of FIG.

In addition, since the outdoor unit 90 shown in FIG. 12 has the rectifying plate 66b, the air flow that has passed through the bypass air passage 65 is smoothly guided to the propeller fan 41.
Therefore, according to the outdoor unit 90, the ventilation resistance can be further reduced.
Incidentally, the rectifying plate 66b of the outdoor unit 90 shown in FIG. 12 is assumed to be attached to the panel 31, but the rectifying plate 66b can also be provided on the top plate 13 or the like above the electric box 33.

DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 3a 1st heat exchange part 3b 2nd heat exchange part 3c 3rd heat exchange part 3d 4th heat exchange part 4 Outdoor fan 4a Outdoor fan 4b Outdoor fan 5 Accumulator 6 Outdoor expansion valve DESCRIPTION OF SYMBOLS 7 Indoor heat exchanger 8 Indoor expansion valve 11 Support frame 12 Base member 13 Top plate 15 Piping connection part 21 Branch pipe 30a Left half 30b Right half 31 Panel 31a Service space 32 Machine room housing (2nd equipment storage box)
33 Electrical box (first equipment storage box)
33a Equipment storage part 33b Connecting part 35 Radiator 37 Connecting pipe 38 Side plate 39 Gap 40 Joint pillar 41 Propeller fan 41a Propeller fan 41b Propeller fan 43 Bell mouth 50 Inner space 61 Inclined surface 65 Bypass air passage 66a Inclined surface 66b Rectifying plate 90 Outdoor unit 91 Indoor unit 100 Air conditioner

Claims (9)

1. A pair of fans arranged side by side;
   A heat exchanger disposed so as to surround an inner space formed on the lower side on the upstream side of the blower,
   The heat exchanger has a pair of halves symmetrical to each other and arranged to correspond to each of the pair of fans.
   Each of the halves extends continuously while partially bending so as to surround the blower in a plan view seen from the corresponding blower side, a first heat exchange part, a second heat exchange part, and a third It has a heat exchange part and a 4th heat exchange part in this order,
   A pair of the half bodies includes an outdoor unit having the heat exchanger joined via the fourth heat exchange parts,
   Having a wall surface that divides the inside of the inner space on the opposite side of the inner space between the halves,
   An air conditioner comprising: the outdoor unit including a first device storage box disposed so as to be close to the wall surface at a position facing the joint between the halves.
2. In the air conditioner according to claim 1,
   Having a compressor disposed in the inner space;
   The air conditioner, wherein the first device storage box is disposed between an upper end of the compressor and an upper end of the heat exchanger.
3. In the air conditioner according to claim 2,
   A second device storage box is disposed in the inner space below the first device storage box,
   The air conditioner characterized in that the compressor is housed in the second device housing box.
4. In the air conditioner according to claim 3,
   The first device storage box is overlaid on the second device storage box;
   When the wall surface is defined as the front side of the outdoor unit and the opposite side of the wall surface is defined as the rear side across the inner space,
   The length in the front-rear direction of the first device storage box is smaller than the length in the front-rear direction of the second device storage box, and the front-rear direction in the overlapping portion of the second device storage box and the first device storage box An air conditioner characterized in that an inclined surface with a downward slope is formed in the rear upper part of the second device storage box so as to absorb the difference in length.
5. In the air conditioner according to claim 1,
   The first equipment storage box has a radiator.
   When the wall surface is defined as the front side of the outdoor unit and the opposite side of the wall surface is defined as the rear side across the inner space,
   The radiator is attached to the rear surface of the first equipment storage box,
   The air conditioner is characterized in that a vertical center position of the radiator is set to be higher than a vertical center position of the first device storage box.
6. The air conditioner according to claim 5,
   The radiator has a plurality of plate-like fins arranged in parallel, and the plate surfaces of the plate-like fins protruding from the rear surface of the first device storage box toward the central portion of the inner space are along the vertical direction. An air conditioner characterized by being arranged as described above.
7. In the air conditioner according to claim 1,
   When the wall surface is defined as the front side of the outdoor unit and the opposite side of the wall surface is defined as the rear side across the inner space,
   The air conditioner characterized in that the first device storage box is long in the front-rear direction.
8. The air conditioner according to claim 7,
   The first device storage box includes a radiator and a pair of device storage portions,
   Each apparatus accommodating part is arrange | positioned so that a heat sink may be pinched | interposed in the direction which cross | intersects the front-back direction.
9. In the air conditioner according to claim 1,
   Between the said wall surface and the said 1st apparatus storage box, the bypass air path which guides an air flow upwards is formed, The air conditioner characterized by the above-mentioned.

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