JP2013050283A - Outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner, which reduces ventilation resistance in a part of a heat exchanger facing a side plate part, to improve efficiency in heat exchange.SOLUTION: The outdoor unit for an air conditioner includes: a heat exchanger 21 having a substantially U-shaped cross-section, disposed on a bottom plate 12 to form a back surface and both right and left side-surfaces of a unit case 11; an outdoor fan 22 disposed above the heat exchanger 21; and a partition plate 38 formed inside the heat exchanger 21 with a back plate part 60 and right and left side-plate parts 62, 63 so as to have a substantially U-shaped cross-section and partitioning the inside of the unit case 11 into a heat exchange chamber 39 and a machine chamber 40. The front ends of the right and left side-plate parts 62, 63 of the partition plate 38 are respectively fixed to tube plates 21A of the heat exchanger 21. The side plate parts 62, 63 and the back plate part 60 of the partition plate are respectively provided with openings 65-67 through which the heat exchange chamber 39 and the machine chamber 40 communicate with each other.

Description

  TECHNICAL FIELD The present invention relates to an outdoor unit of an air conditioner that blows upwardly air sucked from a side through a heat exchanger by a blower.

  In general, a compressor disposed on the bottom plate of the housing, a heat exchanger having a substantially U-shaped cross section disposed on the bottom plate and forming the back surface and the left and right side surfaces of the housing, and an upper portion of the heat exchanger There is known an outdoor unit of an air conditioner that includes a blower disposed on the outside (see, for example, Patent Document 1). In this type of outdoor unit, in order to prevent raindrops from being directly applied to an electric device such as a compressor, a partition plate that divides the enclosure into a heat exchange chamber and a machine room is provided, and the compressor is placed in this machine room. Contained.

JP 2006-189196 A

By the way, in the outdoor unit described above, downsizing of the housing is demanded while ensuring a heat exchange area. For this reason, the partition plate is formed in a substantially U-shaped cross section having a back plate portion and left and right side plate portions and arranged inside the heat exchanger, and the front end of the side plate portion is fixed to the tube plate of the heat exchanger. Is being sought.
However, in the configuration described above, since the side plate portion of the partition plate is fixed close to and opposite to the heat exchanger, the ventilation resistance of the heat exchanger at the portion facing the side plate portion is increased, and the heat exchange efficiency is increased. It was assumed that the problem would decrease.
The present invention has been made in view of the above-described circumstances, and provides an outdoor unit of an air conditioner that reduces ventilation resistance of a heat exchanger at a portion facing a side plate portion and improves heat exchange efficiency. For the purpose.

  In order to achieve the above object, the present invention includes a compressor disposed on a bottom plate of a housing, and a heat having a substantially U-shaped cross section disposed on the bottom plate and forming a back surface and left and right side surfaces of the housing. In an outdoor unit of an air conditioner that includes an exchanger and a blower disposed at the top of the heat exchanger, the heat exchanger has a back plate portion and left and right side plate portions inside the heat exchanger. A partition plate that is formed in a mold and divides the housing into a heat exchange chamber in which the heat exchanger is disposed and a machine chamber in which the compressor is disposed, and a front end of at least one side plate portion of the partition plate Is fixed to the tube plate of the heat exchanger, and an opening for communicating the heat exchange chamber and the machine chamber is formed in the fixed side plate portion and the back plate portion, respectively. .

  In this configuration, the opening may be formed such that the position of the upper edge portion is lower than the height position of the power supply terminal of the compressor. In addition, an electrical box that houses a control unit that controls the operation of the compressor and the blower may be provided above the compressor, and a communication opening that communicates with the machine room may be provided in the electrical box.

  In addition, the front ends of the left and right side plate portions may be fixed to the tube plates of the heat exchanger, respectively, and openings that communicate the heat exchange chamber and the machine chamber may be formed in the side plate portions. The partition plate may be formed so that at least one side plate portion is inclined so as to be separated from the inner surface of the heat exchanger as it goes from the tube plate toward the inside of the heat exchanger. Moreover, the said partition plate may be bent so that the upper part of the said backplate part may become an inclined surface.

  According to the present invention, a partition plate having a back plate portion and left and right side plate portions and having a substantially U-shaped cross section is provided inside the heat exchanger, and the front end of at least one side plate portion of the partition plate Is fixed to the tube plate of the heat exchanger, and the side plate portion and the back plate portion on the fixed side are respectively formed with openings that connect the heat exchange chamber and the machine room, so that air flows through these openings. By doing so, the ventilation resistance of the heat exchanger of the site | part which opposes a side-plate part can be reduced, and the improvement of heat exchange efficiency is realizable.

It is an external appearance perspective view of the outdoor unit of the air conditioning apparatus which shows one embodiment of this invention. It is a sectional side view of an outdoor unit. It is a top view which shows the internal structure of an outdoor unit. It is a perspective view which shows a partition plate. It is a fragmentary perspective view which shows the installation state of a partition plate. It is a perspective view of the outdoor unit explaining the flow of air.

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

FIG. 1 is an external perspective view of the outdoor unit 10, and FIG. 2 is a side sectional view of the outdoor unit 10 viewed from the right side. The outdoor unit 10 includes a unit case (housing) 11 having a substantially rectangular parallelepiped box shape, and the unit case 11 is bridged and fixed on a pair of leg members 13 and 13 extending in the front-rear direction, The bottom plate 12 includes support columns 14 extending in the vertical direction from four corners and a front panel 15.
A heat exchanger 21 to be described later is disposed on the bottom plate 12, and the back surface and the left and right side surfaces of the unit case 11 are formed by the heat exchanger 21. In addition, an outdoor fan (blower) 22 and a bell mouth 25 are arranged around the outdoor fan 22 at the upper portion of the heat exchanger 21, and an air outlet 25 A of the bell mouth 25 is connected to the outdoor fan 22. A fan guard 26 for preventing contact is disposed. A decorative panel 27 provided with a heat insulating material such as foamed polystyrene is provided around the bell mouth 25.

The front panel 15 includes an upper panel 15A and a lower panel 15B which are divided into two parts in the vertical direction. The upper panel 15A and the lower panel 15B are bridged and fixed between the columns 14 and 14 on the front side. As shown in FIG. 2, refrigerant circuit components 32 such as a compressor 30 and a valve body such as a four-way valve and an expansion valve are connected to the front side of the unit case 11 by piping. One end side of the piping of the refrigerant circuit component 32 is connected to the indoor unit via the heat exchanger 21, and the other end side of the piping of the refrigerant circuit component 32 is connected to the indoor unit. A refrigerant circuit for circulating the refrigerant is configured.
On the front side of the unit case 11, an electrical box 34 that houses a control unit for controlling various devices of the outdoor unit 10 is disposed above the compressor 30 and the like. Thereby, by removing the front panel 15, the operator can easily perform maintenance work of the compressor 30 and the control unit in the electrical box 34 from the front side.

As shown in FIG. 2, the outdoor fan 22 includes a fan motor 23 disposed above the heat exchanger 21, and a propeller fan 24 attached to the shaft of the fan motor 23. Between the support columns 14 and 14 adjacent to each other in the width direction of the unit case 11, a connecting member (not shown) that connects the support columns 14 and 14 is provided at a position corresponding to the upper end of the heat exchanger 21. It is fixed to the support frame 16 spanned between these connecting members.
When the propeller fan 24 is rotationally driven by the fan motor 23, as shown by the arrow X in the periphery of the outdoor unit 10, more specifically, in FIG. Outside air is sucked into the unit case 11 from the side and right side, and is discharged outside through the blowout opening 25 </ b> A of the bell mouth 25 provided on the upper surface of the unit case 11. That is, the outdoor unit 10 is configured as a top blowing type that blows out air after heat exchange from the top surface.

  On the bottom plate 12 of the unit case 11, as shown in FIG. 3, a heat exchanger 21 formed by being bent into a substantially U-shaped cross section is disposed. The heat exchanger 21 is arranged on the left side surface of the unit case 11. Are arranged along the back surface and the right side surface, and on both end surfaces of the heat exchanger 21 are tube plates 21A for fixing refrigerant tubes that are continuously bent in a meandering manner in the heat exchanger 21. Is provided.

  Inside the heat exchanger 21, an accumulator 35, an oil separator 36 and a receiver tank 37 that constitute a part of the refrigerant circuit together with the compressor 30 and the refrigerant circuit component 32 are arranged on the bottom plate 12. Yes. The frame 17 is fixed to the center of the upper portion of the accumulator 35. The frame 17 extends from the upper end of the accumulator 35 and is fixed to a connecting member that connects the columns 14 and 14, and prevents the accumulator 35 from swinging. ing.

These accumulator 35, oil separator 36 and receiver tank 37 are pressure vessels for temporarily storing refrigerant or refrigerating machine oil, and have a low maintenance frequency. On the other hand, since the compressor 30 and the refrigerant circuit component 32 described above include electric elements such as a motor and a coil, the maintenance frequency is high. For this reason, in this configuration, a partition plate 38 extending upward from the bottom plate 12 to the lower end portion of the electrical box 34 is provided, and by this partition plate 38, the inside of the unit case 11 is heat exchange chamber 39 as shown in FIG. And the machine room 40. The machine room 40 accommodates the compressor 30 and the refrigerant circuit component 32 having a high maintenance frequency, and the heat exchange chamber 39 has a heat exchanger 21, an accumulator 35, an oil separator 36, and a receiver tank 37 with a low maintenance frequency. Contained.
The partition plate 38 extends straight up to the middle and then bends obliquely forward. The upper end of the partition plate 38 is connected to the electrical box 34 disposed on the front side of the bell mouth 25. For this reason, it is prevented that raindrops are directly applied to each device accommodated in the machine room 40 by the partition plate 38. Further, in the present embodiment, the partition plate 38 separates the heat exchange chamber 39 and the machine room 40, thereby preventing each device in the machine room 40 from being burned by a fire type that enters from the outside of the unit case 11. . Further, the compressor 30 is housed in the machine room 40 surrounded by the partition plate 38, so that the operation sound generated in the compressor 30 can be prevented from leaking to the outside.

Next, the partition plate will be described.
4 is an external perspective view showing the partition plate 38, and FIG. 5 is a partial perspective view showing an installation state of the partition plate 38.
The partition plate 38 is formed of sheet metal, and includes a back plate portion 60, an upper plate portion 61 connected to the upper edge of the back plate portion 60, and left and right side edges of the back plate portion 60 and the upper plate portion 61. The left and right side plate portions 62 and 63 are connected to each other, and the respective plates are fixed to each other by screwing or welding to form a substantially U-shaped cross section. Thereby, the partition plate 38 having a complicated shape can be manufactured at a lower cost than that formed by press molding or the like.

The left and right side plate portions 62 and 63 are bent at substantially right angles with the front ends of the side plate portions 62 and 63 toward the outside of the unit case 11, respectively, and are formed with first mounting portions 62 A and 63 A that are formed substantially parallel to the back plate portion 60. The lower side portions of the side plate portions 62, 63 are bent substantially at right angles toward the inside of the unit case 11, and are provided with second mounting portions 62B, 63B formed substantially parallel to the bottom plate 12, and the first mounting portions 62A, 63A are provided. Are attached to the tube plates 21A and 21A of the heat exchanger 21 and the second attachment portions 62B and 63B are attached to the bottom plate 12 to fix the heat exchanger 21 to the unit case 11 via the partition plate 38. ing.
According to this configuration, when the heat exchanger 21 is assembled, the partition plate 38 functions as a positioning member that determines the position of the heat exchanger 21, so that the assembling work is facilitated. Furthermore, when the outdoor unit 10 is transported and transported, the heat exchanger 21 is fixed to the bottom plate 12 by the partition plate 38, so that the position shift of the heat exchanger 21 can be prevented.

As shown in FIG. 2, the upper plate portion 61 of the partition plate 38 is arranged to be an inclined surface extending from the upper edge of the back plate portion 60 to the lower end portion of the electrical equipment box 34. As a result, the air sucked into the unit case 11 through the heat exchanger 21 and blown out of the unit case 11 from the outdoor fan 22 arranged above the heat exchanger 21 is the back plate portion 60 of the partition plate 38. And since it flows along the plate surface of the upper plate part 61 and is guided to the outdoor fan 22, the flow of the air is not obstructed and the flow of the air in the heat exchange chamber 39 is improved.
4 and 5, the upper plate portion 61 has a holding portion 61A provided so that the upper end portion is bent forward and substantially parallel to the bottom plate 12, and the holding portion 61A is When the electrical box 34 is attached to the columns 14 and 14 in contact with the bottom surface of the electrical box 34, the electrical box 34 is held in the height direction. Further, the upper plate portion 61 includes a cutout portion 61B in which the left side plate portion 62 side of the holding portion 61A is cut out.

Further, as shown in FIG. 5, an inspection opening 53 and a lead wire drawing hole 54 are formed in the upper plate portion 61. The inspection opening 53 is normally covered with a panel 53 </ b> A, and the panel 53 </ b> A is detachably provided on the upper plate portion 61. The inspection opening 53 is an opening for inspecting the inside of the heat exchange chamber 39 from the machine room 40 side. With this, from the front side of the unit case 11, the heat exchange chamber closed by the partition plate 38 and the electrical box 34. When inspecting the inside 39, the panel 53A covering the inspection opening 53 can be removed, and the inside of the heat exchange chamber 39 can be easily inspected.
A rubber cap 54A is fitted into the lead wire drawing hole 54, and the rubber cap 54A has a crack, and the lead wire connected to the fan motor 23 is drawn into the machine chamber 40 through the crack. As a result, it is possible to prevent raindrops from entering the machine room 40 through the lead wire drawing hole 54 and to prevent the lead wire from coming into contact with the sheet metal of the lead wire drawing hole 54. Further, the lead wire is connected to the inside of the electrical equipment box 34 through the above-described notch 61B.

By the way, in the above-described configuration, as shown in FIG. 3, the left and right side plate portions 62 and 63 are arranged close to and opposite to the heat exchanger 21, respectively. There is a problem that the ventilation resistance of the heat exchanger 21 at the portion facing 63 increases, and the heat exchange efficiency of the entire heat exchanger 21 decreases.
In the present embodiment, as shown in FIGS. 4 and 5, the left and right side plate portions 62 and 63 and the back plate portion 60 have openings that communicate the heat exchange chamber 39 and the machine chamber 40 below the respective plate portions. 66 and 67 and an opening 65 are formed, respectively.
The openings 66 and 67 formed in the left and right side plate portions 62 and 63 prevent the side plate portions 62 and 63 from covering a part of the heat exchanger 21, and the heat exchangers are opened through the openings 66 and 67. Part of the air that has passed through 21 flows into the machine room 40.
Further, the opening 65 formed between the back plate portion 60 and the bottom plate 12 discharges air that has flowed into the machine chamber 40 to the heat exchange chamber 39. It is desirable that the opening area of the opening 65 be larger than the sum of the opening areas of the openings 66 and 67 formed in the side plate parts 62 and 63 described above.

  When the outdoor fan 22 is operated, the heat exchange chamber 39 has a negative pressure, so that air flows into the heat exchange chamber 39 through the heat exchanger 21. In this case, since the opening area of the opening 65 is larger than the sum of the opening areas of the openings 66 and 67 formed in the side plate parts 62 and 63 described above, the air flowing into the machine chamber 40 is formed. Is not obstructed by the opening 65. For this reason, the air that has flowed into the machine room 40 through the openings 66 and 67 is smoothly discharged to the heat exchange chamber 39, thereby reducing the ventilation resistance of the heat exchanger 21 at the portion facing the side plate parts 62 and 63. Since the rise is suppressed, the amount of air passing through the heat exchanger 21 can be increased, and the heat exchange efficiency of the entire heat exchanger 21 can be improved.

On the other hand, by forming the openings 65 to 67, the water tightness between the machine room 40 and the heat exchange chamber 39 is lowered. Therefore, if the openings 65 to 67 are made too large, there is a problem in waterproofing. For this reason, in this embodiment, as shown in FIG. 6, the openings 65 to 67 are formed such that the upper edge portions 65 </ b> A to 67 </ b> A are all lower than the power supply terminal 30 </ b> A of the compressor 30. Has been. According to this configuration, even when rainwater enters the machine room 40 through the openings 65 to 67, the rainwater can be prevented from directly entering the power supply terminal 30A of the compressor 30.
In the present embodiment, an opening 65 that connects the machine chamber 40 and the heat exchange chamber 39 is formed between the back plate portion 60 and the upper surface of the bottom plate 12. Piping connection for connecting devices arranged in the chamber 40 and the heat exchange chamber 39 can be made. According to this configuration, since the partition plate 38 can be removed while the pipe connection is maintained, the maintenance workability of the equipment in the heat exchange chamber 39 is improved.

  In the present embodiment, as shown in FIG. 3, the left side plate portion 62 gradually moves from the inner surface of the heat exchanger 21 toward the inner side in the depth direction of the heat exchanger 21 from the tube plate 21A. It is formed to be inclined obliquely so as to leave. According to this, since a gap can be provided between the left side plate portion 62 above the opening 66 and the heat exchanger 21, a part of the heat exchanger 21 is blocked by the side plate portion 62. Therefore, the heat transfer area of the heat exchanger 21 can be used effectively. Further, since the side plate portion 62 of the partition plate 38 is provided obliquely with respect to the side surface of the heat exchanger 21, the flow direction of the air sucked into the unit case 11 through the heat exchanger 21 is determined by the partition. The plate 38 is not changed suddenly, and the heat exchange efficiency of the heat exchanger 21 is not impaired.

As shown in FIG. 6, the electrical box 34 accommodates each control device (control unit) 70 that controls the operation of each device (for example, the compressor 30 and the outdoor fan 22) of the outdoor unit 10. A communication opening 71 that communicates with the machine room 40 is formed on the lower surface of the box 34. The communication opening 71 is provided at a position above the opening 66 and fits into the notch 61 </ b> B of the upper plate part 61. An exhaust duct 72 is provided on the right side surface of the electrical box 34, and an exhaust port (not shown) of the exhaust duct 72 opens into the heat exchange chamber 39.
According to this configuration, most of the air flowing into the machine room 40 through the openings 66 and 67 is discharged to the heat exchange chamber 39 through the opening 65 as indicated by an arrow X1 in FIG. A part of the air rises in the machine room 40 as shown by an arrow X2 in FIG. 6, flows into the electrical equipment box 34 through the communication opening 71, and is discharged into the heat exchange chamber 39 through the exhaust duct 72. For this reason, the air (outside air) flowing from the bottom to the top in the outdoor unit 10 and the wind speed distribution thereof are easily made uniform in the vertical direction of the heat exchanger 21, and the outside air flowing into the outdoor unit 10 is reduced. It can rectify and suppress a decrease in air volume. Further, in the electrical box 34, as indicated by an arrow X2 in FIG. 6, since air flows into the electrical box 34, the control device 70 and the electrical box 34 in the electrical box 34 are effectively cooled. Thus, the temperature rise in the control device (component) 70 and the electrical equipment box 34 can be suppressed to a low level, and the desired performance of the control device (component) 70 can be secured.

  As described above, according to the present embodiment, the compressor 30 disposed on the bottom plate 12 of the unit case 11 and the cross section that is disposed on the bottom plate 12 and forms the back surface and the left and right side surfaces of the unit case 11. In an outdoor unit 10 of an air conditioner that includes a U-shaped heat exchanger 21 and an outdoor fan 22 disposed above the heat exchanger 21, a back plate 60 and left and right sides are disposed inside the heat exchanger 21. The unit case 11 is divided into a heat exchange chamber 39 in which the heat exchanger 21 is disposed and a machine chamber 40 in which the compressor 30 is disposed. And the front ends of the left and right side plate portions 62, 63 of the partition plate 38 are fixed to the tube plate 21A of the heat exchanger 21, respectively, and the side plate portions 62, 63 and the back plate portion 60 are Heat exchange chamber 39 and machine Since the openings 66 and 67 and the opening 65 that communicate with the chamber 40 are formed, air flows through the openings 65 to 67, so that the portion of the heat exchanger 21 that is opposed to the side plates 62 and 63 is formed. Since the ventilation resistance is reduced and the ventilation volume is increased, improvement in heat exchange efficiency can be realized.

  Further, according to the present embodiment, the openings 65 to 67 are such that the positions of the upper edge portions 65A to 67A of the openings 65 to 67 are lower than the height position of the power supply terminal 30A of the compressor 30, respectively. Therefore, even when rainwater enters the machine room 40 through the openings 65 to 67, it can be prevented that the rainwater is directly applied to the power supply terminal 30A of the compressor 30. .

  Moreover, according to this embodiment, the electrical equipment box 34 which accommodates the control apparatus 70 which controls the operation | movement of the said compressor 30 and the outdoor fan 22 above the compressor 30 is provided, and this electrical equipment box 34 is equipped with the machine room 40 and Since the communication opening 71 that communicates is provided, a part of the air that has flowed into the machine room 40 through the openings 66 and 67 can flow into the electrical box 34 through the communication opening 71, and the control device 70 in the electrical box 34 can be It can be cooled effectively.

  Further, according to the present embodiment, the partition plate 38 is inclined so that the one side plate portion 62 moves away from the inner surface of the heat exchanger 21 as it goes from the tube plate 21 </ b> A toward the inside of the heat exchanger 21. Since it is formed, a gap can be provided between the side plate portion 62 above the opening 66 and the heat exchanger 21, and a part of the heat exchanger 21 is blocked by the side plate portion 62. Thus, the heat transfer area of the heat exchanger 21 can be used effectively.

  In addition, according to the present embodiment, since the upper plate portion 61 disposed on the upper portion of the partition plate 38 has an inclined surface, the outdoor portion is sucked from the heat exchanger 21 and disposed above the heat exchanger 21. Since the cross-sectional area of the air flow (swirl flow) in the unit case 11 blown out from the fan 22 does not change abruptly, the heat exchange efficiency of the heat exchanger 21 is not impaired.

Although one embodiment of the present invention has been described above, the present invention is not limited to this. For example, in this embodiment, the partition plate 38 has the front ends of the left and right side plate portions 62 and 63 fixed to the tube plate 21A of the heat exchanger 21, respectively. However, the unit case 11 has a wide lateral width and a large capacity outdoor unit. Then, the front end of one side plate portion may be fixed to the tube plate 21A of the heat exchanger 21, and the other side plate portion may be fixed to the bottom plate to provide a large space between the heat exchanger.
Further, according to the present embodiment, the left side plate portion 62 is formed so as to be inclined away from the inner surface of the heat exchanger 21 as it goes from the tube plate 21 </ b> A toward the inside of the heat exchanger 21. Of course, the side plate portion may be inclined.
In the present embodiment, the heat exchanger 21 is integrally formed by bending in a substantially U-shaped cross section. However, in the outdoor unit having a wide lateral width of the unit case 11 and a large capacity, for example, Two heat exchangers formed in a substantially L-shaped cross section may be arranged to face each other in a substantially U-shaped cross section.

10 Outdoor unit 11 Unit case (housing)
12 Bottom plate 21 Heat exchanger 21A Tube plate 22 Outdoor fan (blower)
30 Compressor 30A Power supply terminal 34 Electrical box 38 Partition plate 39 Heat exchange chamber 40 Machine room 60 Back plate portion 61 Upper plate portion 62, 63 Side plate portion 65 Opening portion 65A Upper edge portion 66, 67 Opening portion 65A, 67A Upper edge portion 70 Control equipment (control unit)
71 Communication opening

Claims (6)

A compressor disposed on the bottom plate of the housing, a heat exchanger having a substantially U-shaped cross section disposed on the bottom plate and forming the back and left and right sides of the housing, and disposed on the top of the heat exchanger In an outdoor unit of an air conditioner comprising a blower to be operated,
Inside the heat exchanger, it has a back plate part and left and right side plate parts and is formed in a substantially U-shaped cross section, and a heat exchange chamber in which the heat exchanger is arranged and a compressor are arranged in the housing A partition plate that is partitioned into a machine room, the front end of at least one side plate portion of the partition plate is fixed to the tube plate of the heat exchanger, and the fixed side plate portion and the back plate portion An outdoor unit of an air conditioner, wherein openings for communicating the heat exchange chamber and the machine room are formed.   The outdoor unit of an air conditioner according to claim 1, wherein the opening is formed such that the position of the upper edge is lower than the height of the power terminal of the compressor.   The electrical equipment box which accommodates the control unit which controls the operation of the compressor and the blower above the compressor is provided, and the electrical equipment box is provided with a communication opening communicating with the machine room. The outdoor unit of the air conditioning apparatus of 1 or 2.   The front ends of the left and right side plate portions are fixed to the tube plates of the heat exchanger, respectively, and openings for communicating the heat exchange chamber and the machine chamber are formed in the side plate portions, respectively. Item 4. The outdoor unit of the air conditioning apparatus according to any one of Items 1 to 3.   The partition plate is formed such that at least one side plate portion is inclined so as to move away from the inner surface of the heat exchanger as it goes from the tube plate toward the inside of the heat exchanger. The outdoor unit of the air conditioning apparatus in any one of claim | item 1 thru | or 4.   The outdoor unit of an air conditioner according to any one of claims 1 to 5, wherein the partition plate is bent so that an upper portion of the back plate portion is an inclined surface.

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