JP4859801B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner.

In general, an outdoor unit of an air conditioner in which a housing is divided into a heat exchange chamber and a machine room by a partition plate, a heat exchanger and a blower are housed in the heat exchange chamber, and a compressor and an accumulator are housed in the machine room is known. It has been. In recent years, in order to reduce the size of a machine room, a compressor and an accumulator are arranged in a vertical relationship in the machine room, and the accumulator is attached to a partition plate (for example, Patent Document 1). reference).
JP 09-243115 A

  By the way, in the structure which attaches an accumulator to a partition plate, since the weight of an accumulator is heavy (for example, 8 kg), it is requested | required that a partition plate should have the intensity | strength of a grade which does not deform | transform with the weight of an accumulator. Further, since vibration generated when the compressor is operated is transmitted to the accumulator through the pipe, it is considered that the partition plate vibrates due to this vibration. When the partition plate vibrates, the panel constituting the housing connected to the partition plate also vibrates, and as a result, abnormal noise may be generated from the outdoor unit. On the other hand, the conventional device has a configuration in which an elastic member is disposed between the partition plate and the accumulator, and thus there is a problem that a structure for attaching the accumulator to the partition plate becomes complicated.

  An object of the present invention has been made in consideration of the above-described circumstances, and is an outdoor unit of an air conditioner that can suppress vibration of a partition plate with a simple configuration and, in turn, can suppress generation of abnormal noise associated with the vibration. Is to provide.

In order to solve the above-mentioned problems, the present invention divides the inside of a housing into a heat exchange chamber and a machine room with a partition plate, houses a heat exchanger and a blower in the heat exchange chamber, and houses a compressor and an accumulator in the machine room. In the outdoor unit of the air conditioner, a reinforcing plate is assigned to the partition plate, the accumulator is attached to the partition plate via the reinforcing plate, and one end of the partition plate is attached to the heat exchanger tube together with the reinforcing plate. It is fixed to a board.
According to this configuration, since the accumulator is attached to the partition plate through the reinforcing plate, the rigidity of the partition plate is increased by the reinforcing plate, thereby suppressing the vibration of the partition plate. Furthermore, since one end of the partition plate is fixed to the tube plate of the heat exchanger together with the reinforcing plate, it is difficult to transmit the vibration of the partition plate to the heat exchanger, and the generation of noise due to this vibration can be suppressed. it can.

In this configuration, the accumulator may include a container main body and a pair of mounting brackets fixed to the container main body, and the reinforcing plate may be arranged on the partition plate according to the pitch of the mounting brackets. .
Further, the partition plate and the reinforcing plate may be formed with a hole through which the partition plate and the reinforcing plate can be hooked.
In addition, a service valve connected to a refrigerant circuit connected to the compressor and the accumulator is provided in the machine chamber, and one end of a support plate that supports the service valve is fixed to the partition plate via the reinforcing plate. Also good.

  According to the present invention, since the accumulator is attached to the partition plate via the reinforcing plate, the rigidity of the partition plate is increased by the reinforcing plate, thereby suppressing the vibration of the partition plate. Furthermore, since one end of the partition plate is fixed to the tube plate of the heat exchanger together with the reinforcing plate, it is difficult to transmit the vibration of the partition plate to the heat exchanger, and the generation of noise due to this vibration can be suppressed. it can.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The air conditioner according to the present 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 a view of the outdoor unit 10 as viewed from the front, and FIG. 2 is a view of the outdoor unit 10 as viewed from above. The outdoor unit 10 includes a unit case (housing) 11 having a substantially rectangular parallelepiped box shape. The unit case 11 includes a bottom plate 12, a top plate 13, a front panel 14, and an outer plate 15. The inside of the unit case 11 is a bottom plate. 12 is partitioned vertically by a partition plate 16 standing upright, and is divided into a heat exchange chamber R1 and a machine chamber R2. 1 shows a state in which the front panel 14 is removed, the front panel 14 includes a first front panel 14A and a second front panel 14B that are divided into left and right parts with a partition plate 16 as a boundary. By removing the front panels 14A and 14B, the operator can perform maintenance work on the components in the heat exchange chamber R1 and the machine room R2 from the front side.

  As shown in FIG. 2, the heat exchanger 21 accommodates the heat exchanger 21 on the back side and the blowers 22 </ b> A and 22 </ b> B arranged in the vertical direction on the front side. The heat exchanger 21 is formed by being bent into a substantially L shape when viewed from above, and is disposed along the back surface from the left side surface (outer side surface) of the heat exchange chamber R1. Thus, the heat exchanger 21 forms the left side surface and the back surface of the heat exchange chamber R1 (that is, the unit case 11), and the entire exposed surface from the left side surface to the back surface functions as a ventilation path (suction port). Further, in this configuration, the surface of the heat exchanger 21 is covered with a finger (not shown) made of a resin net or the like in order to prevent a human body or the like from contacting the heat exchanger 21.

The blowers 22A and 22B are attached to a pair of left and right support columns 24L and 24R disposed in the heat exchange chamber R1. These struts 24L, 24R hook the upper ends of the struts 24L, 24R to the upper edge of the heat exchanger 21, respectively, and the lower ends of the struts 24L, 24R are fixed to the bottom plate 12 by screws.
The blower 22A includes a fan motor 26A fixed to the upper part of the support posts 24L and 24R via a base 25A, and a propeller fan (axial fan) 27A attached to the shaft of the fan motor 26A. The propeller fan 27A is disposed close to the front side of the heat exchange chamber R1. Further, the front portion of the propeller fan 27A enters a round flange-shaped fan cover portion 28A provided at the upper portion of the first front panel 14A of the heat exchange chamber R1, and the opening portion of the fan cover portion 28A is ventilated. This opening functions as a path (air outlet), and is covered with a fan guard 29A that prevents the propeller fan 27 from contacting a human body or the like. Further, the blower 22B is disposed below the support posts 24L and 24R and has substantially the same configuration as the blower 22A. Therefore, the blower 22B is assigned the same kind of code as the equipment constituting the blower 22A. The description is omitted.
When the propeller fans 27A and 27B are rotationally driven by the fan motors 26A and 26B, outside air enters the heat exchange chamber R1 around the outdoor unit 10, more specifically, from the back side and the left side of the heat exchanger 21. After being sucked and passed through the substantially front surface of the heat exchanger 21, it is discharged outside through the fan cover portions 28A and 28B on the front surface of the heat exchange chamber R1. That is, the outdoor unit 10 is configured as a front blowing type that blows out air after heat exchange from the front.

Further, as shown in FIG. 1, the machine room R2 includes refrigerant circuit components such as a compressor 31, an accumulator 32, and a valve body such as a four-way valve 33 and an expansion valve (not shown) constituting a part of the refrigerant circuit. Piping is connected and accommodated in a substantially lower space of the machine room R2.
In this configuration, the compressor 31 and the accumulator 32 are provided with a compression container having the same capacity, and are arranged in the machine room R2 in the vertical direction. Specifically, the compressor 31 is installed on the bottom plate 12, and the accumulator 32 is attached to the partition plate 16 above the compressor 31. Thereby, the installation space of the compressor 31 and the accumulator 32 in the machine room R2 can be kept small.
A support plate 36 is disposed at a substantially intermediate position on the front side of the machine room R2, and a gas pipe service valve 37 and a liquid pipe service valve 38 are fixed to the support plate 36. The gas pipe service valve 37 and the liquid pipe service valve 38 are connected to a gas pipe and a liquid pipe (not shown) of unit piping extending from the indoor unit, respectively, thereby constituting a refrigerant circuit for circulating the refrigerant. Further, an electrical box 40 in which various electrical components such as a control board for controlling the air conditioner are disposed is disposed above the machine room R2.

Next, the attachment structure of the partition plate 16 and the accumulator 32 will be described.
3 is a perspective view showing the partition plate 16 and the accumulator 32, FIG. 4 is a perspective view showing the configuration of the partition plate 16, and FIG. 5 shows a state of attachment of the accumulator 32 to the partition plate 16. It is a top view.
As shown in FIG. 3, the partition plate 16 is disposed between the heat exchange chamber R1 and the machine room R2, and separates the heat exchange chamber R1 and the machine room R2 from each other, and the board portion 16A. A front surface portion 16B formed by bending the side edge portion on the front surface side toward the machine room R2, a slope portion 16C formed by obliquely bending the side edge portion on the back surface side of the substrate portion 16A toward the machine chamber R2, and the slope surface. The back surface portion 16D formed by bending the side edge portion of the portion 16C substantially parallel to the front surface portion 16B, the upper surface portion 16E formed by bending the upper edge portion of the substrate portion 16A toward the machine chamber R2, and the upper surface portion 16E. And a lower surface portion 16F formed by bending the lower edge portion of the substrate portion 16A to the machine room R2 side in a substantially parallel manner.

Thus, the partition plate 16 is intended to improve the rigidity (strength) of the partition plate 16 by forming a thin sheet metal in the tray shape. Furthermore, in this configuration, a reinforcing plate 50 is provided on a part of the partition plate 16 in order to further improve the rigidity of the partition plate 16. The reinforcing plate 50 is arranged so as to be directed to one surface (surface on the machine room side) of the partition plate 16, and the accumulator 32 is attached to the partition plate 16 via the reinforcing plate 50.
The accumulator 32 includes a container main body 32A formed as a pressure container, and a pair of upper and lower mounting brackets 32B provided on the upper and lower parts of the container main body 32A. As shown in FIG. 5, the mounting bracket 32B is formed by fixing a bolt 32C substantially at the center of a substantially U-shaped bracket.

On the other hand, as shown in FIG. 3, the reinforcing plates 50 are arranged at two locations above and below the partition plate 16 at a predetermined interval P corresponding to the mounting pitch of the mounting bracket 32 </ b> B of the accumulator 32. In this configuration, since it is only necessary to apply the reinforcing plate 50 to a part of the partition plate 16, the manufacturing cost can be reduced as compared with the case where the plate pressure of the entire partition plate is formed thick. Further, even when the capacity of the accumulator is changed and the mounting pitch of the mounting bracket is changed, the reinforcing plate 50 may be disposed on the partition plate 16 at intervals corresponding to the mounting pitch. It becomes possible to respond widely.
The reinforcing plate 50 is bent and formed in substantially the same shape as the partition plate 16 from the front surface portion 16B of the partition plate 16 to the substrate portion 16A, the inclined surface portion 16C, and the back surface portion 16D. Specifically, as shown in FIG. 4, the reinforcing plate 50 includes a substrate portion 50A and a front portion 50B (FIG. 5) corresponding to the substrate portion 16A, the front portion 16B, the slope portion 16C, and the rear portion 16D of the partition plate 16. The rib portion 50C is formed by bending the upper and lower edges of the substrate portion 50A, the front surface portion 50B, the inclined surface portion 50C, and the rear surface portion 50D into a substantially L shape.
Since the reinforcing plate 50 includes the ribs 50E and is molded into a tray shape, the rigidity of the reinforcing plate 50 itself is improved. And since the reinforcing plate 50 and the partition plate 16 are integrated by forming the reinforcing plate 50 in substantially the same shape as the partition plate 16 and arriving at the partition plate 16, the partition plate 16 can be configured with a simple configuration. The rigidity of can be increased.
In this configuration, the reinforcing plate 50 and the partition plate 16 are joined by spot welding, but may be joined by means such as screwing.

As shown in FIG. 3, the partition plate 16 is erected on the bottom plate 12 by screwing the lower surface portion 16 </ b> F of the partition plate 16 and the bottom plate 12. Furthermore, the back surface portion 16D (one end) of the partition plate 16 is fixed to the heat exchanger 21 by screwing. Specifically, as shown in FIG. 3, the heat exchanger 21 includes a tube plate 35 at an end portion on the right side of the heat exchanger 21 in the drawing, and the tube plate 35 includes an inner side of the unit case 11. A rib 35A is formed by bending the edge into a substantially L shape. In this configuration, as shown in FIG. 5, the back surface portion 16 </ b> D of the partition plate 16 is screwed to the rib 35 </ b> A of the tube plate 35 together with the back surface portion 50 </ b> D of the reinforcing plate 50. In this configuration, the front surface portion 16B of the partition plate 16 is fixed to the first front panel 14A together with the front surface portion 50B of the reinforcing plate 50 by screwing. Thereby, since the partition plate 16 can be fixed to the tube plate 35 and the first front panel 14A at the portion reinforced by the reinforcing plate 50, the partition plate 16 is more firmly supported in the unit case 11. This makes it difficult for the vibration of the partition plate 16 to be transmitted to each panel of the heat exchanger 21 and the unit case 11, and the generation of abnormal noise associated with the vibration can be suppressed.
Further, since the accumulator 32 is attached to the partition plate 16 via the reinforcing plate 50, the rigidity of the partition plate 16 is increased by the reinforcing plate 50, and the deformation of the partition plate 16 can be prevented by the load of the accumulator 32. The vibration of the partition plate 16 accompanying the vibration of the accumulator 32 can be suppressed.

Further, as shown in FIG. 4, a dharma hole (hole portion) 52 is formed in the substrate portion 16 </ b> A of the partition plate 16 and the substrate portion 50 </ b> A of the reinforcing plate 50. The dharma hole 52 is formed by vertically connecting a large diameter hole 52A and a small diameter hole 52B. The small diameter hole 52B is larger than the diameter of the bolt 32C of the mounting bracket 32B of the accumulator 32. The diameter is smaller than that of the nut 53 screwed into the bolt 32C. The large-diameter hole 52 </ b> A is formed to have a larger diameter than the nut 53.
When the accumulator 32 is attached to the partition plate 16, the bolt 32 </ b> C together with the nut 53 is passed through the large-diameter hole 52 </ b> A of the Dharma hole 52 with the nut 53 attached to the bolt 32 </ b> C of the mounting bracket 32 </ b> B of the accumulator 32. Next, when the accumulator 32 is moved downward, the bolt 32C is moved into the small diameter hole 52B, and the nut 53 is caught in the small diameter hole 52B. For this reason, the accumulator 32 can be temporarily fixed to the partition plate 16 easily. Then, by tightening the nut 53, the accumulator 32 is fixed to the partition plate 16. In this way, the partition plate 16 and the reinforcing plate 50 are formed with the dharma holes 52 into which the mounting bracket 32B of the accumulator 32 can be hooked, so that the accumulator 32 can be temporarily fixed to the partition plate 16, Even one person can easily attach the accumulator 32 to the partition plate 16.

Also, as shown in FIG. 5, one end 36A of a support plate 36 that supports the gas pipe service valve 37 and the liquid pipe service valve 38 is connected to the lower reinforcing plate 50, and the other end of the support plate 36 is connected. 36 </ b> B is connected to the front side end of the outer plate 15.
When the outdoor unit 10 is installed, the gas pipe service valve 37 and the liquid pipe service valve 38 are connected to a gas pipe and a liquid pipe (not shown) of the unit pipe, respectively, and the liquid pipe service valve after the installation. The refrigerant may be replenished through 38. For this reason, since there are many occasions where pipes and the like are attached to and detached from the gas pipe service valve 37 and the liquid pipe service valve 38, it is desirable that the gas pipe service valve 37 and the liquid pipe service valve 38 be firmly fixed.
In this configuration, since one end 36A of the support plate 36 is fixed to the partition plate 16 via the lower reinforcing plate 50, the pipe can be easily attached to and detached from the gas pipe service valve 37 and the liquid pipe service valve 38. .

  According to this embodiment, the inside of the unit case 11 is divided into the heat exchange chamber R1 and the machine room R2 by the partition plate 16, and the heat exchanger 21 and the blowers 22A and 22B are accommodated in the heat exchange room R1, and the machine room R2 is accommodated. The compressor 31 and the accumulator 32 are accommodated in the storage plate, the reinforcing plate 50 is assigned to the partition plate 16, and the accumulator 32 is attached to the partition plate 16 through the reinforcing plate 50. 16, the rigidity of the partition plate 16 can be prevented from being deformed by the load of the accumulator 32, and the vibration of the partition plate 16 accompanying the vibration of the accumulator 32 can be suppressed. Furthermore, since the back surface portion 16D of the partition plate 16 is fixed to the tube plate 35 of the heat exchanger 21 together with the reinforcing plate 50, the partition plate 16 can be supported more firmly in the unit case 11, and the partition plate 16 Is less likely to be transmitted to the heat exchanger 21, and the generation of abnormal noise associated with this vibration can be suppressed.

  Further, according to the present embodiment, the accumulator 32 includes the container main body 32A and a pair of mounting brackets 32B fixed to the container main body 32A, and the reinforcing plate 50 is divided into the partition plates 16 according to the pitch of the mounting brackets 32B. Therefore, even if the mounting pitch of the accumulator mounting bracket is changed, the reinforcing plate 50 can be arranged on the partition plate 16 at intervals corresponding to this mounting pitch, and can be used for a wide variety of products. Thus, the manufacturing cost can be reduced.

  Further, according to the present embodiment, the partition plate 16 and the reinforcing plate 50 are formed with the dharma holes 52 that pass through the partition plate 16 and the reinforcing plate 50 and can be hooked with the mounting bracket 32B of the accumulator 32. Therefore, the accumulator 32 can be temporarily fixed to the partition plate 16, and the accumulator 32 can be easily attached to the partition plate 16 even by one operator.

  Further, according to this embodiment, the machine pipe R2 includes the gas pipe service valve 37 and the liquid pipe service valve 38 connected to the refrigerant circuit connected to the compressor 31 and the accumulator 32. Since one end 36A of the support plate 36 that supports the pipe service valve 38 is fixed to the partition plate 16 via the reinforcing plate 50, the gas pipe service valve 37 and the liquid pipe service valve 38 can be firmly supported by the unit case 11. It is possible to easily attach and detach the pipes to the gas pipe service valve 37 and the liquid pipe service valve 38.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this. For example, in the present embodiment, the upper and lower two reinforcing plates 50 are arranged on the partition plate 16, but the present invention is not limited to this, and one or three or more reinforcing plates may be arranged. Moreover, although this embodiment demonstrated the structure provided with the two air blowers 22A and 22B arrange | positioned up and down, of course, the structure provided with one air blower may be sufficient. In the present embodiment, the configuration in which the support plate 36 that supports the gas pipe service valve 37 and the liquid pipe service valve 38 is fixed to the partition plate 16 via the lower reinforcing plate 50 has been described. It is good also as a structure fixed to the partition plate 16 via.

It is a front view of the internal structure of the outdoor unit which concerns on one Embodiment of this invention. It is a top view of the internal configuration of the outdoor unit. It is a perspective view which shows a partition plate and an accumulator. It is a perspective view which shows the structure of a partition plate. It is a top view which shows the attachment state of the accumulator to a partition plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Outdoor unit 11 Unit case 12 Bottom plate 13 Top plate 14 Front panel 14A 1st front panel 14B 2nd front panel 16 Partition plate 16A Substrate part 16B Front part 16C Slope part 16D Back part (one end)
16E Upper surface portion 16F Lower surface portion 21 Heat exchanger 22A, 22B Blower 31 Compressor 32 Accumulator 32A Container body 32B Mounting bracket 32C Bolt 33 Four-way valve 35 Tube plate 35A Rib 36 Support plate 36A One end 50 Reinforcement plate 50A Front surface portion 50C Base portion 50B Slope portion 50D Back portion 50E Rib 52 Dharma hole 52A Large diameter hole 52B Small diameter hole 53 Nut P Predetermined spacing

Claims (4)

In the outdoor unit of the air conditioner in which the inside of the housing is divided into a heat exchange chamber and a machine room by a partition plate, a heat exchanger and a blower are housed in the heat exchange room, and a compressor and an accumulator are housed in the machine room.
A reinforcing plate is assigned to the partition plate, the accumulator is attached to the partition plate via the reinforcing plate, and one end of the partition plate is fixed to the tube plate of the heat exchanger together with the reinforcing plate. Outdoor unit of air conditioner.   2. The accumulator includes a container main body and a pair of mounting brackets fixed to the container main body, and the reinforcing plate is arranged on the partition plate according to a pitch of the mounting brackets. The outdoor unit of the air conditioning apparatus described in 1.   3. The hole according to claim 1, wherein the partition plate and the reinforcing plate are formed with holes through which the partition plate and the reinforcing plate can be hooked and the attachment bracket of the accumulator can be hooked. Outdoor unit of air conditioner.   A service valve connected to a refrigerant circuit connected to the compressor and the accumulator is provided in the machine chamber, and one end of a support plate that supports the service valve is fixed to the partition plate via the reinforcing plate. The outdoor unit of the air conditioning apparatus according to any one of claims 1 to 3.

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