JP2022019915A - Outdoor machine and refrigeration cycle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor machine and a refrigeration cycle device which maintain an accommodation amount of mechanical components while reducing power consumption and suppressing noise.

SOLUTION: An outdoor machine comprises: a plurality of mechanical units in each of which a machine room for accommodating mechanical components is formed; a blower arranged in a blowing chamber between partitioning walls of the plurality of mechanical units, and generating an airflow; a heat exchanger arranged at an upstream side of the blower, and exchanging heat between air sent by the blower and a refrigerant; and a bellmouth for surrounding a periphery of the blower. At least one partitioning wall of the plurality of mechanical units has a first region formed at the heat exchanger side and inclined toward a rotating shaft of the blower from the heat exchanger side, a second region arranged at a downstream side of the first region and milder in inclination than the first region, and a third region arranged at a downstream side of the second region and steeper in inclination than the second region. An upstream end of the second region is located at an upstream side of an upstream end of the bellmouth, and a downstream end of the second region is located at a downstream side of the upstream end of the bellmouth.

SELECTED DRAWING: Figure 9

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to an outdoor unit and a refrigeration cycle device including a machine unit in which a machine room for accommodating machine parts is formed.

Conventionally, an outdoor unit including a machine unit in which a machine room for storing machine parts is formed is known. Patent Document 1 discloses an outdoor unit provided with a pair of heat exchangers on the upstream side of the air flow. One of the heat exchangers of Patent Document 1 extends from the left side surface to the back surface, and the other extends from the right side surface to the back surface. A machine room for storing the compressor is formed between the two heat exchangers. Patent Document 2 includes a U-shaped heat exchanger provided on the upstream side of the air flow and a symmetrical fan provided on the downstream side, and a pair of machines provided on both sides of the fan. The outdoor unit in which the room is formed is disclosed. A compressor or the like is stored in the machine room.

Japanese Unexamined Patent Publication No. 2002-267207 Japanese Unexamined Patent Publication No. 6-213198

However, since the outdoor unit disclosed in Patent Document 1 is provided with a heat exchanger through which the airflow passes and a machine room for blocking the airflow on the upstream side of the fan, a wake due to the machine room is generated. When turbulent air including vortices flows into the leading edge of the fan blade, the blade may peel off and pressure fluctuations on the blade surface may occur. This causes energy loss and noise. Further, in the outdoor unit disclosed in Patent Document 2, the space between the wing and the machine room, which is the space on the side surface of the fan, is narrow. Here, when the fan operates with a large air volume, airflow is also sucked from the side surface of the wing. However, since the space between the wall and the machine room is narrow, air cannot be sucked and the air volume becomes small. As a result, the characteristics of the fan deteriorate, which causes an increase in power consumption and noise. On the other hand, if an attempt is made to increase the distance between the fan and the machine room, the machine room becomes narrower and the storage capacity of machine parts decreases. It is desired to maintain the storage capacity of mechanical parts while reducing power consumption and noise.

The present invention has been made to solve the above-mentioned problems, and provides an outdoor unit and a refrigerating cycle device that maintain a storage capacity of mechanical parts while reducing power consumption and noise. ..

The outdoor unit according to the present invention is provided in a plurality of machine units in which a machine room for accommodating machine parts is formed and a blower chamber between the partition walls of the plurality of machine units to generate an air flow. It is equipped with a blower, a heat exchanger provided on the upstream side of the blower to exchange heat between the air sent by the blower and a refrigerant, and a bell mouth surrounding the blower, and at least a plurality of mechanical units. One partition wall is provided on the heat exchanger side, a first region inclined from the heat exchanger side toward the rotation axis of the blower, and a first region downstream of the first region. It has a second region with a gentler slope and a third region provided downstream of the second region and steeper than the second region, upstream of the second region. The end is located upstream of the upstream end of the bell mouth, and the downstream end of the second region is located downstream of the upstream end of the bell mouth.

According to the present invention, the partition wall has a first region, a second region and a third region. Since the second region has a gentler slope than the first region, the air flowing into the fan side along the first region reaches the blower side without being obstructed by the second region. Therefore, the amount of air produced by the blower can be maintained. Further, since the third region has a steeper slope than the second region, the machine room at the position corresponding to the third region can be expanded. Therefore, it is possible to maintain the storage capacity of mechanical parts while reducing power consumption and suppressing noise.

It is a circuit diagram which shows the refrigeration cycle apparatus 50 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the outdoor unit 1 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which the panel group 2 of the outdoor unit 1 which concerns on Embodiment 1 of this invention is removed. It is a front view which shows the outdoor unit 1 which concerns on Embodiment 1 of this invention. It is a top view which saw through the top panel 2d of the outdoor unit 1 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the outdoor unit 1 which concerns on Embodiment 1 of this invention. It is a graph which shows the change of the distance between the partition wall 14a of the machine unit 10 and the rotation axis ZZ which concerns on Embodiment 1 of this invention. It is a graph which shows the relationship between the air volume and pressure of the blower 3 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the outdoor unit 1 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the outdoor unit 1000 which concerns on a comparative example. It is sectional drawing which shows the outdoor unit 100 which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the outdoor unit 200 which concerns on Embodiment 3 of this invention. It is a graph which shows the change of the distance between the partition wall 14a of the machine unit 10 and the rotation axis ZZ which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the outdoor unit 300 which concerns on Embodiment 4 of this invention. It is sectional drawing which shows the outdoor unit 400 which concerns on Embodiment 5 of this invention. It is a front view which shows the outdoor unit 500 which concerns on Embodiment 6 of this invention. It is a front view which shows the outdoor unit 500a which concerns on the modification of Embodiment 6 of this invention. It is a perspective view which shows the blower 603 which concerns on Embodiment 7 of this invention. It is sectional drawing which shows the outdoor unit 600 which concerns on Embodiment 7 of this invention. It is sectional drawing which shows the outdoor unit 700 which concerns on Embodiment 8 of this invention. It is sectional drawing which shows the outdoor unit 800 which concerns on Embodiment 9 of this invention. It is sectional drawing which shows the outdoor unit 900 which concerns on Embodiment 10 of this invention.

Embodiment 1.
Hereinafter, embodiments of the outdoor unit and the refrigeration cycle device according to the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram showing a refrigeration cycle device 50 according to the first embodiment of the present invention. As shown in FIG. 1, the refrigerating cycle device 50 is an air conditioner that adjusts the air in the indoor space, and includes an outdoor unit 1 and an indoor unit 1a. The outdoor unit 1 is provided with a compressor 8, a flow path switching device 22, a heat exchanger 7, a blower 3, and an expansion unit 23. The indoor unit 1a is provided with an indoor heat exchanger 24 and an indoor blower 25.

The compressor 8, the flow path switching device 22, the heat exchanger 7, the expansion unit 23, and the indoor heat exchanger 24 are connected by pipes to form a refrigerant circuit 21. The compressor 8 sucks in the refrigerant in a low temperature and low pressure state, compresses the sucked refrigerant into a refrigerant in a high temperature and high pressure state, and discharges the sucked refrigerant. The flow path switching device 22 switches the direction in which the refrigerant flows in the refrigerant circuit 21, and is, for example, a four-way valve. The heat exchanger 7 exchanges heat between, for example, outdoor air and a refrigerant. The heat exchanger 7 acts as a condenser during the cooling operation and as an evaporator during the heating operation.

The blower 3 is a device that sends outdoor air to the heat exchanger 7. The expansion unit 23 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant. The expansion unit 23 is, for example, an electronic expansion valve whose opening degree is adjusted. The indoor heat exchanger 24 exchanges heat between, for example, indoor air and a refrigerant. The indoor heat exchanger 24 acts as an evaporator during the cooling operation and as a condenser during the heating operation. The indoor blower 25 is a device that sends indoor air to the indoor heat exchanger 24.

(Operation mode, cooling operation)
Next, the operation mode of the refrigeration cycle device 50 will be described. First, the cooling operation will be described. In the cooling operation, the refrigerant sucked into the compressor 8 is compressed by the compressor 8 and discharged in a high temperature and high pressure gas state. The high-temperature and high-pressure gas-state refrigerant discharged from the compressor 8 passes through the flow path switching device 22 and flows into the heat exchanger 7 acting as a condenser, and is sent by the blower 3 in the heat exchanger 7. It exchanges heat with the outdoor air to be condensed and liquefied. The condensed liquid-state refrigerant flows into the expansion unit 23 and is expanded and depressurized in the expansion unit 23 to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant. Then, the refrigerant in the gas-liquid two-phase state flows into the indoor heat exchanger 24 that acts as an evaporator, and in the indoor heat exchanger 24, heat is exchanged with the indoor air sent by the indoor blower 25 and becomes evaporative gas. At this time, the indoor air is cooled, and cooling is performed indoors. The evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching device 22 and is sucked into the compressor 8.

(Operation mode, heating operation)
Next, the heating operation will be described. In the heating operation, the refrigerant sucked into the compressor 8 is compressed by the compressor 8 and discharged in a high temperature and high pressure gas state. The high-temperature and high-pressure gas-state refrigerant discharged from the compressor 8 passes through the flow path switching device 22 and flows into the indoor heat exchanger 24 acting as a condenser, and in the indoor heat exchanger 24, the indoor blower. It exchanges heat with the indoor air sent by 25 to form a condensed liquefaction. At this time, the indoor air is warmed and heating is performed in the room. The condensed liquid-state refrigerant flows into the expansion unit 23 and is expanded and depressurized in the expansion unit 23 to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant. Then, the refrigerant in the gas-liquid two-phase state flows into the heat exchanger 7 acting as an evaporator, and in the heat exchanger 7, heat is exchanged with the outdoor air sent by the blower 3 to be converted into evaporative gas. The evaporated low-temperature and low-pressure gas-state refrigerant passes through the flow path switching device 22 and is sucked into the compressor 8.

FIG. 2 is a perspective view showing the outdoor unit 1 according to the first embodiment of the present invention. As shown in FIG. 2, the outdoor unit 1 has a panel group 2, a fan guard 5, and an internal component 18. The panel group 2 is a housing constituting the outer shell of the outdoor unit 1, and has a bottom panel 2c, a front panel 2a, two side panel 2b, and a top panel 2d. The bottom panel 2c is a plate-shaped member placed on the ground, floor, or the like. The front panel 2a is a plate-shaped member provided on one side of the bottom panel 2c and having an outlet 4 which is an opening for blowing air. The two side panel 2b are plate-shaped members provided on the other side of the bottom panel 2c and closing the side surface of the outdoor unit 1. The top panel 2d is a member provided at the upper ends of the two side panels 2b and the front panel 2a and closes the top surface of the outdoor unit 1. The fan guard 5 is attached to the outlet 4 and has a mesh shape to prevent foreign matter from coming into contact with the internal component 18. The air flow 6 flows from the back side to the front side of the outdoor unit 1.

FIG. 3 is a perspective view showing a state in which the panel group 2 of the outdoor unit 1 according to the first embodiment of the present invention is removed. As shown in FIG. 3, the internal component 18 has two mechanical units 10, a heat exchanger 7, a support 20, a blower 3, and a bell mouth 12. The two machine units 10 are erected from both ends of the bottom panel 2c, and a machine room 10a for storing machine parts is formed inside. In the first embodiment, the compressor 8 is housed in the machine room 10a of one machine unit 10, and the controller 9 is housed in the machine room 10a of the other machine unit 10. In addition, the machine room 10a of the machine unit 10 houses a pipe through which the refrigerant flows, an expansion portion 23, and the like. The heat exchanger 7 has a U-shape and is provided on the upstream side of the blower 3 to exchange heat between the refrigerant and air. An air suction port 4a is formed on the back surface of the outdoor unit 1, and the heat exchanger 7 is provided at the suction port 4a.

The support 20 stands upright from the bottom panel 2c along the heat exchanger 7 and supports the motor 11 of the blower 3. The blower 3 is provided in a blower chamber 13 formed between partition walls 14a forming the inside of the two mechanical units 10, and has a motor 11, a shaft 11a, a boss 11b, and a blade 11c, for example. I'm a propeller fan. The motor 11 rotates and drives the blade 11c, and is supported by the support 20. The shaft 11a is a shaft that is rotated by the rotation of the motor 11. The boss 11b is attached to the tip of the shaft 11a and sandwiches the blade 11c with the motor 11 to prevent the blade 11c from coming off. The blade 11c is attached to the shaft 11a, is rotated by the motor 11 and the shaft 11a, and blows out the air sucked from the suction port 4a from the outlet 4.

FIG. 4 is a front view showing the outdoor unit 1 according to the first embodiment of the present invention, and FIG. 5 is a top view of the upper surface panel 2d of the outdoor unit 1 according to the first embodiment of the present invention. .. As shown in FIGS. 4 and 5, the bell mouth 12 surrounds the blower 3 and communicates the inside and the outside of the outdoor unit 1. The alternate long and short dash line in FIG. 5 is a line indicating the center of the rotation axis ZZ of the blower 3. The air is sucked in from the suction port 4a on the heat exchanger 7 side, passes through the heat exchanger 7 and the blower 3, and is blown out from the outlet 4.

FIG. 6 is a cross-sectional view showing the outdoor unit 1 according to the first embodiment of the present invention, and is a cross-sectional view taken along the line AA of FIG. The AA cross-sectional line is a line passing through the rotation axis ZZ of the blower 3. As shown in FIG. 6, the distance between the partition wall 14a of one of the mechanical units 10 and the rotation axis ZZ is indicated by a line segment perpendicular to the rotation axis ZZ of the blower 3, and is defined as a distance W. The partition wall 14a has a first region A, a second region B, and a third region C. The first region A is a portion provided on the heat exchanger 7 side and inclined from the heat exchanger 7 side toward the rotation axis ZZ of the blower 3. The second region B is provided on the downstream side of the first region A and has a gentler slope than the first region A. The third region C is provided on the downstream side of the second region B and has a steeper slope than the second region B. Here, in the first embodiment, the shapes of the partition walls 14a on both sides are line-symmetrical with respect to the rotation axis ZZ. That is, the distance W between one partition wall 14a and the rotating shaft ZZ and the distance W between the other partition wall 14a and the rotating shaft ZZ are the same. As a result, the flow of air flowing into the blower 3 becomes the same on both sides, so that noise can be suppressed. The distance W between one partition wall 14a and the rotating shaft ZZ and the distance W between the other partition wall 14a and the rotating shaft ZZ may be different.

The portion where the first region A and the second region B are connected is referred to as a first change point 15ab. Further, the portion where the second region B and the third region C are connected is referred to as a second change point 15bc. Further, the portion at the downstream end of the third region C is referred to as a third change point 15cd. The portion downstream of the third change point 15cd is referred to as the fourth region D. The distance between the upstream end of the first region A and the rotation axis ZZ is W1, the distance between the first change point 15ab and the rotation axis ZZ is W2, and the distance between the second change point 15bc and the rotation axis ZZ is. Let W3 be, and let W4 be the distance between the third change point 15cd and the rotation axis ZZ.

Here, the first change point 15ab, which is the upstream end of the second region B, is located on the upstream side of the upstream end of the bell mouth 12. The air sucked from the side surface of the blower 3 flows along the first region A of the partition wall 14a and then flows along the second region B of the partition wall 14a. By locating the first change point 15ab upstream of the upstream end 12a of the bell mouth 12, air flows along the second region B before flowing into the bell mouth 12. Therefore, it is possible to sufficiently secure a space through which air flows before flowing into the bell mouth 12.

FIG. 7 is a graph showing a change in the distance between the partition wall 14a of the machine unit 10 and the rotation axis ZZ according to the first embodiment of the present invention. In FIG. 7, the horizontal axis indicates the position in the rotation axis ZZ direction from the upstream end to the downstream end of the partition wall 14a. In FIG. 7, the vertical axis indicates the distance W between the partition wall 14a of one of the machine units 10 and the rotation axis ZZ. As shown in FIG. 7, the amount of change in the distance W in the second region B is smaller than the rate of change in the distance W in the first region A and the amount of change in the distance W in the third region C. That is, the amount of spatial change in the blower chamber 13 located in the second region B is smaller than the amount of spatial change in the blower chamber 13 located in the first region A and the third region C.

FIG. 8 is a graph showing the relationship between the air volume and the pressure of the blower 3 according to the first embodiment of the present invention. In FIG. 8, the horizontal axis shows the air volume of the blower 3, and the vertical axis shows the pressure of the air sent by the blower 3. As shown in FIG. 8, in the case of the operation point (1) where the air volume is small and the pressure is large, the air flowing in from the side surface side of the outdoor unit 1 swirls on the spot and is difficult to reach the downstream side of the blower 3. On the other hand, in the case of the operation point (2) in which the air volume is large and the pressure is small, the air flowing in from the side surface side of the outdoor unit 1 easily reaches the downstream side of the blower 3. When the blower 3 is a propeller fan whose wings 11c protrude upstream from the bell mouth 12, as in the first embodiment, the blower 3 also sucks air from the side surface side. In the first embodiment, when the blower 3 is operated at the operation point (2) where the air volume is large and the pressure is small, the amount of air sucked from the side surface is remarkably increased. The wider the area through which air passes in the heat exchanger 7 on the upstream side of the blower 3, the smaller the ventilation resistance, and in this case, the state of the operation point (2) is reached.

FIG. 9 is a cross-sectional view showing the outdoor unit 1 according to the first embodiment of the present invention. As shown in FIG. 9, the airflow 6 that has passed through the heat exchanger 7 is an airflow 6a that flows in from a direction parallel to the rotation axis direction of the blower 3 and an airflow 6b that flows in from the side surface of the blower 3 along the partition wall 14a. , 6c. In the first embodiment, since the area through which the air passes in the heat exchanger 7 is large, the operating state has a small ventilation resistance. According to the first embodiment, the partition wall 14a has a first region A, a second region B, and a third region C. Since the second region B has a gentler slope than the first region A, the air flowing into the fan side along the first region A reaches the fan side without being obstructed by the second region B. do. Therefore, the amount of air produced by the blower 3 can be maintained. Further, since the third region C has a steeper slope than the second region B, the machine room 10a at a position corresponding to the third region C can be expanded. Therefore, it is possible to maintain the storage capacity of mechanical parts while reducing power consumption and suppressing noise.

FIG. 10 is a cross-sectional view showing the outdoor unit 1000 according to the comparative example. As shown in FIG. 10, the partition wall 14a of the comparative example is not divided into regions, and the space between the partition wall 14a and the blower 3 is narrow. Therefore, it becomes difficult for air to be sucked from the side surface of the blower 3, and the air volume decreases. As a result, the operating efficiency inherent in the blower 3 cannot be exhibited, power consumption increases, and noise may increase. On the other hand, in the first embodiment, the partition wall 14a has a first region A, a second region B, and a third region C, and the second region B is the first region. The slope is gentler than A. Therefore, the blower 3 can suck the air from the side surface side of the blower 3 without obstructing the air flow 6b. Therefore, since the air volume increases, the power consumption can be reduced and the noise can be reduced. Further, since the machine room 10a that blocks the airflow 6a does not exist on the upstream side of the blower 3, the wake containing the vortex does not flow into the blade 11c. Therefore, it is possible to suppress the energy loss due to the peeling at the leading edge of the blade 11c and suppress the generation of sound due to the pressure fluctuation on the surface of the blade 11c.

Embodiment 2.
FIG. 11 is a cross-sectional view showing the outdoor unit 100 according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in that the convex portion 101 is provided in the second region B of the partition wall 14a. In the second embodiment, the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.

As shown in FIG. 11, two convex portions 101 are provided in the second region B of the partition walls 14a on both sides. Thereby, the strength of the partition wall 14a can be improved. Although the convex portion 101 is provided in the second embodiment, it may be a concave portion. Further, in the second embodiment, when the distance between one of the partition walls 14a and the rotation axis ZZ is to be applied to the graph shown in FIG. 7, the position of the convex portion 101 closest to the blower chamber 13 and the rotation axis The distance W may be defined by connecting with ZZ. In this case, the distance W of the portion where the convex portion 101 is not provided is not reflected in the graph.

Embodiment 3.
FIG. 12 is a cross-sectional view showing the outdoor unit 200 according to the third embodiment of the present invention. As shown in FIG. 12, the third embodiment is different from the first embodiment in that the partition wall 14a is formed of a curved surface. In the third embodiment, the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.

FIG. 13 is a graph showing a change in the distance between the partition wall 14a of the machine unit 10 and the rotation axis ZZ according to the third embodiment of the present invention. In FIG. 13, the horizontal axis indicates the position in the rotation axis direction from the upstream end to the downstream end of the partition wall 14a. In FIG. 13, the vertical axis indicates the distance W between the partition wall 14a of one of the machine units 10 and the rotation axis ZZ. As shown in FIG. 13, all of the first region A, the second region B, and the third region C of the partition wall 14a are curved lines. The first region A has an upward convex shape, the second region B has a downward convex shape, and the third region C has an upward convex shape. That is, at the first change point 15ab and the second change point 15bc, the directions of the convexes in the vertical direction are reversed. The degree of inclination of the partition wall 14a is evaluated using the line segment 218 connecting the changing points.

Embodiment 4.
FIG. 14 is a cross-sectional view showing the outdoor unit 300 according to the fourth embodiment of the present invention. In the fourth embodiment, the second change point 15bc, which is the downstream end of the second region B, is located at the downstream end of the upstream end 12a of the bell mouth 12, and is the second than the first embodiment. The downstream end of the region B is shifted to the downstream side. As shown in FIG. 14, the airflow 6c sucked from the side surface of the blower 3 flows along the wall surface of the bell mouth 12. Therefore, in order to increase the amount of air blown, the space on the side surface side of the blower 3 may be widened in the space until the air flows into the bell mouth 12. Further, on the downstream side of the bell mouth 12, even if the distance W is shortened, the air volume of the blower 3 is not affected. Therefore, the volume of the machine room 10a of the machine unit 10 on the outer peripheral side of the bell mouth 12 can be expanded without reducing the air volume of the blower 3.

Embodiment 5.
FIG. 15 is a cross-sectional view showing the outdoor unit 400 according to the fifth embodiment of the present invention. As shown in FIG. 15, in the fifth embodiment, the upstream end 12a of the bell mouth 12 is the upstream end of the second region B, the first change point 15ab, and the downstream end of the second region B. It is located between the second change point 15bc. Therefore, the effects obtained in the first embodiment and the fourth embodiment can be compatible with each other.

Embodiment 6.
FIG. 16 is a front view showing the outdoor unit 500 according to the sixth embodiment of the present invention. The sixth embodiment is different from the first embodiment in that the first region A, the second region B, and the third region C are formed in a part of the partition wall 14a. In the sixth embodiment, the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.

As shown in FIG. 16, the first region A, the second region B, and the third region C are the range of the partition wall 14a from the upper end to the lower end of the bell mouth 12 when viewed from the direction of the rotation axis ZZ. It is formed only in R. That is, the first region A, the second region B, and the third region C are formed in the portion of the partition wall 14a facing the bell mouth 12. The blower chamber 13 may be wide only in a portion where the blower 3 sucks air. Therefore, in the sixth embodiment, the first region A, the second region B, and the third region C are formed only in the range R from the upper end to the lower end of the bell mouth 12 in the partition wall 14a. ing. As a result, the machine room 10a of the machine unit 10 can be expanded at a position away from the blower 3. Therefore, the ventilation performance can be improved without enlarging the size of the entire outdoor unit 500.

FIG. 17 is a front view showing an outdoor unit 500a according to a modified example of the sixth embodiment of the present invention. As shown in FIG. 17, the mechanical units 510 on both sides may communicate with each other below the downstream end of the bell mouth 12. As a result, wiring, piping, and the like for connecting the devices provided in the machine units 510 on both sides can be stored in the communicating portion.

Embodiment 7.
FIG. 18 is a perspective view showing a blower 603 according to the seventh embodiment of the present invention. The seventh embodiment is different from the first embodiment in that the blower 3 is a centrifugal fan. In the seventh embodiment, the same parts as those in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.

As shown in FIG. 18, the blower 603 is a centrifugal fan. As a result, the heat transfer performance of the heat exchanger 7 of the outdoor unit 600 is enhanced to increase the ventilation resistance, and it is possible to cope with the case where the air volume cannot be secured by the boosting capacity of the propeller fan. The blower 603 has a main plate 611, a shroud 612, a plurality of wings 613 sandwiched between the main plate 611 and the shroud 612, and a boss 614. The boss 614 and the motor 11 (not shown) are connected, and the blower 603 sucks air from the shroud 612 side and blows it out to the outer peripheral side as it rotates.

FIG. 19 is a cross-sectional view showing the outdoor unit 600 according to the seventh embodiment of the present invention. As shown in FIG. 19, the leading edge 613a, which is the entrance of the wing 613, is located on the outer peripheral side of the inner peripheral end 12b of the bell mouth 12. Therefore, the wind speed at which air is sucked in is high on the outer peripheral side of the bell mouth 12. Similar to the first to sixth embodiments, the outdoor unit 600 has a large space at the entrance of the bell mouth 12, so that a sufficient amount of air flowing into the bell mouth 12 can be secured. In FIG. 19, the upstream end 12a of the bell mouth 12 is located between the upstream end of the second region B and the downstream end of the second region B, as in the fifth embodiment. Therefore, also in the seventh embodiment, the effects obtained by the first embodiment and the fourth embodiment can be compatible with each other.

In the first to seventh embodiments, the case where the shapes of the partition walls 14a on both sides are line-symmetrical with respect to the rotation axis ZZ is illustrated, but the shapes of the partition walls 14a on both sides are non-linear with respect to the rotation axis ZZ. It may be symmetrical. In this case, the distance W between one partition wall 14a and the rotating shaft ZZ and the distance W between the other partition wall 14a and the rotating shaft ZZ are different. Hereinafter, a case where the shapes of the partition walls 14a on both sides are non-axisymmetric with respect to the rotation axis ZZ will be illustrated.

Embodiment 8.
FIG. 20 is a cross-sectional view showing the outdoor unit 700 according to the eighth embodiment of the present invention. In the eighth embodiment, the partition wall 14a of one of the mechanical units 710 is not inclined and is flat. Also in this case, the same effect as that of the first to seventh embodiments is obtained in the partition wall 14a of the machine unit 10 having the first region A, the second region B, and the third region C.

Embodiment 9.
FIG. 21 is a cross-sectional view showing the outdoor unit 800 according to the ninth embodiment of the present invention. In the ninth embodiment, the partition wall 14a of one of the mechanical units 810 has only the second region B and the third region C, and does not have the first region A. Also in this case, the same effect as that of the first to seventh embodiments is obtained in the partition wall 14a of the machine unit 10 having the first region A, the second region B, and the third region C.

Embodiment 10.
FIG. 22 is a cross-sectional view showing the outdoor unit 900 according to the tenth embodiment of the present invention. In the tenth embodiment, one of the mechanical units 10 is not in contact with the heat exchanger 907. Also in this case, the same effect as that of the first to seventh embodiments is obtained in the partition wall 14a of the machine unit 10 having the first region A, the second region B, and the third region C.

In the above embodiment, the case where the outdoor unit is an outdoor unit of an air conditioner is illustrated, but it may be an outdoor unit of a refrigerating cycle device such as a water heater and a refrigerating device.

1 Outdoor unit, 1a Indoor unit, 2 Panel group, 2a Front panel, 2b Side panel, 2c Bottom panel, 2d Top panel, 3 Blower, 4 Blowout port, 4a Suction port, 5 Fan guard, 6,6a, 6b, 6c Airflow, 7 heat exchangers, 8 compressors, 9 controllers, 10 mechanical units, 10a machine chambers, 11 motors, 11a shafts, 11b bosses, 11c wings, 12 bellmouths, 12a upstream ends, 13 blower chambers, 14a dividers, 15ab 1st change point, 15bc 2nd change point, 15cd 3rd change point, 18 internal components, 20 supports, 21 refrigerant circuit, 22 flow path switching device, 23 expansion part, 24 indoor heat exchanger, 25 Indoor Blower, 50 Refrigerating Cycle Device, 100 Outdoor Unit, 101 Convex, 200 Outdoor Unit, 218 Lines, 300 Outdoor Unit, 400 Outdoor Unit, 500 Outdoor Unit, 500a Outdoor Unit, 510 Machine Unit, 600 Outdoor Unit, 603 Blower , 611 main plate, 612 shroud, 613 wings, 613a front edge, 614 boss, 700 outdoor unit, 710 mechanical unit, 800 outdoor unit, 810 mechanical unit, 900 outdoor unit, 907 heat exchanger, 1000 outdoor unit, A 1st Region, B second region, C third region.

Claims (4)

With multiple machine units that have a machine room inside to store machine parts,
A blower provided in a blower chamber between the partition walls of the plurality of mechanical units to generate an air flow, and a blower.
A heat exchanger provided on the upstream side of the blower and exchanging heat between the air sent by the blower and the refrigerant.
With a bell mouth that surrounds the blower,
The partition wall of at least one of the plurality of mechanical units is
A first region provided on the heat exchanger side and inclined from the heat exchanger side toward the rotation axis of the blower, and
A second region provided on the downstream side of the first region and having a gentler slope than the first region,
It has a third region which is provided on the downstream side of the second region and has a steeper slope than the second region.
The upstream end of the second region is
Located on the upstream side of the upstream end of the bell mouth,
The downstream end of the second region is
An outdoor unit located on the downstream side of the upstream end of the bell mouth. Two of the mechanical units are provided.
The outdoor unit according to claim 1, wherein the ventilation chamber is provided between the partition walls of the two mechanical units. The first region, the second region and the third region are
The outdoor unit according to claim 1 or 2, which is formed on a portion of the partition wall facing the bell mouth when viewed from the direction of the rotation axis. A refrigeration cycle apparatus comprising the outdoor unit according to any one of claims 1 to 3.

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